Water Resources Department Tender

Supply Transportation, Installation, Testing and Commissioning of Instruments.of Automation Panel with instrumentation, human interface, signal and power isolators, Drive Protection, Drive for SCADA operation, Transformer, uninterupted power supply, and power safety & power conditioning units, panel wiring and routing, sensor cable protection, power cables for the gates control. The auxiliary relays shall be in accordance with IS standards and shall be industrial type. RTU/PLC Panels / Enclosures of protection protocol of IP54 and above (i) PLC Panel/ Enclosures: (1) Factory fabricated to requirements, lockable doors, dead-front, self- supporting. (2) Cabinets shall consist of a rigid self-supporting structure constructed of not lighter than 2 mm thick, cold rolled, stretcher levelled sheet steel, braced rigidly where required with structural members. Panels and doors shall be constructed of the same weight and type of material as the housing. Housings, including doors and panels, shall show no evidence of warping, weaving, or distortion upon completion of installations. (3) All cable entry into the panel shall be form bottom using cable glands of adequate size. (4) The panel shall be provided with forced fan cooling system as a standard. (5) The internal panel layout must be designed considering proper approach to the PLC, instruments, relays, terminals, and other accessories for maintenance. (6) The Cubicles should in sheet steel construction, free floor mounting with front and back access. The doors and side covers should be of 2- mm thick sheet and all load-bearing members are 2 mm thick. (7) Arrange doors with minimum 105 degrees’ open position and with stops. Construct doors so that they neither weave nor warp; provide stiffening members where necessary to ensure rigidity. (8) Provide ample duct space for adding and removing wiring from the top. (9) Dimensions – As per site requirement & as approved by Engineer in charge. (10) Lock System: Slam lock /Screw Fixed - with common key or unique key.

(11) The cabin shall be provided with power distribution units with sufficient number of sockets to provide power to equipment’s hosted inside the cabin. (12) Provide channel base for mounting. ii. Equipment Arrangement (1) Wiring ducts to provide easy access for inspection and maintenance. (2) Design and arrange ducts and terminal blocks to accommodate bottom entry to cabinet for control, alarm, status, power, and instrumentation cables, as required. iii. Ground Bus (1) Provide continuous copper bar ground bus, size not less than 6 mm by 25 mm along the full length at the rear of the panel iv. Nameplates (1) Engraved 20-gauge metal/baked enamel or phenol plastic, black background/white letters, drilled for screw mounting with round head screws. (2) Provide nameplates for all equipment, instruments, power supplies, relays, circuit breakers, fuses and other devices furnished and mounted in the cabinet. Provide nameplates for each device on panel interior door. (3) Submit size, type, and wording for BWRD approval. All nameplates shall be in English. v. Terminal blocks (1) Terminal blocks for switchboard control wiring shall be rack mounted screw clamp type. (2) Provide white or other light-coloured markers to the terminal block, for terminal designations. (3) Make no more than two connections at each terminal point. (4) Confine switchboard internal wiring to one side only of the terminal block. The other side shall be reserved for incoming leads. (5) Twenty percent of terminal points in each panel section shall have no connections and shall be designated as spare terminals. (6) Form control wire adequately. Bundles without sharp bends and support.

vi. Indicating Lamps (1) The indicating lamp assemblies shall be a heavy-duty type with colour caps. Indicating lamps shall be suitable for AC/DC power supplies, utilizing long life incandescent type lamps. vii. Lighted Pushbuttons (1) Each lighted pushbutton shall be mechanically interlocked, illuminated type. Lighted buttons shall be the recessed guarded type to preclude inadvertent operation. (2) Gate control lighted pushbuttons shall be furnished with a flasher so the lamps will blink at a 1-second on and off rate when the maintained pushbutton is operated. viii. Pushbuttons (1) Each unit shall be a maintained contact type. Pushbuttons shall be the recessed guarded type to preclude inadvertent operation. ix. Relays (1) The auxiliary relays shall be in accordance with IS standards and shall be industrial type. The relays shall have convertible contacts and shall be self-resetting. A minimum of two spare contacts shall be furnished on each relay. x. Special Tools (1) The Contractor shall furnish any special tools that may be required to allow proper connections of wiring to devices and all terminal blocks. xi. Surface Finish. (1) Cabinet shall be Nano ceramic/Epoxy powder coated with RAL 7035 after proper pre-treatment as per the industry practice, with thickness of 80 to 120 microns. xii. Test Procedure. (1) After the cabinets are completely assembled and wired, perform the following tests and procedures. (2) Dielectric test on all circuits in accordance with standard test requirements. Instruments or other devices that cannot withstand test voltage shall be disconnected. (3) Circuit continuity test to verify connections. (4) Functional tests of all control switches and indicating lamps. (5). Verify operation of Operator Interface Unit on cabinets.

6. Temperature testing to ensure that operational temperature of all equipment’s is maintained. Uninterrupted Power Supply (1KVA) as a power back up 1. The 1 KVA UPS shall be provided by supplier as a power back up for each PLC ’s at local control stations. Power back up of minimum 2 hours shall be provided by the UPS, with following minimum specifications: Minimum technical Specifications of 1 KVA UPS Features Capacity - 1000VA / 600W, Voltage Range - 140VAC-290VAC, Compact Size - YES, Boost and buck AVR for voltage stabilization - YES, Auto restart while AC is recovering - YES, Simulated sine wave - Modified sine wave, Off-Mode charging & Cold start function - YES. Input Nominal Voltage - 230Vac, Frequency Range - 50Hz Output AC Voltage Regulation (Batt. Mode) - 230VAC ± 10%, AC Mains Frequency (Batt. Mode) - 50Hz ± 1%, Transfer Time - Typical 4-8ms, Waveform (Batt. Mode) - Modified sinewave Battery Battery Type - 12V/ 7Ah, Minimum Backup Time - 2 hours, Typical Recharge Time - Shall be less than 8 hours up to 90% capacity. Indicators Battery Mode - Yellow flashing, AC Mode - Green lighting Alarm Battery Mode - Sounding every 1minute, Low Battery - Sounding every second , Overload - Sounding every 1 second, Fault - Continuously Sounding Output Sockets - India output. Environment Humidity - 0-90% RH @ 0-40degC (non- condensing)

Local HMI Facilities ֎ The remote PLC system shall be equipped with adequate operator panel to enable monitoring and control for the operator at the Reservoir level. ֎ The operator panel shall be preferably accomplished by means of LED/LCD backlit display of 7 inches or above at Local Control Stations & 12 inches at Integrated Central Command PLC controller. ֎ The graphical LED/LCD should be easily detachable such that its failure does not affect the PLC functionality. ֎HMI functionality shall be capable of presenting customized views with key process variables presented as digital and graphical data. ֎ The HMI shall provide the ability to navigate from control screen to control screen or to navigate via navigation buttons or similar graphical device on the current screen. ֎The HMI software must support real-time and historical trend graphic displays as part of a display. ֎ The HMI software shall provide the capability to provide popup windows for device control, trends and device status pages ֎ HMI shall support parameterization and Configuration settings through its display at local PLC Station. ֎ Degree of protection: Front: IP 65 & Rear: IP 20. Any Cable / Wiring work the external protoction arrangements should be ensured Complete complying with standard specification and as directed by engineer in charge. ( As per Quotation Rate )

Supply, Transportation, Installation, Testing and Commissioning Programmable Logic Controllers CPUs with memory, integrated digital & analouge I/Os, Communication modules etc. Remote PLC for Reservoirs: Make , Model No. Model Name/Number ֎ CE/UL approved manufacturer’s Programmable Logic Controller (PLC) in IP54 enclosure having modular PLC_ (Plug and play type) for control & monitoring with Modular Controller and should have modular communication. ֎ The Local PLC/ located at Poondi, Chembarambakkam and Red Hills should be able to communicate locally to the master controller at respective facility on an open protocol such as Profibus / Modbus over Ethernet TCP/IP using OFC cable & memory map of the same shall be available. ֎ Simultaneously the same PLC shall be able to communicate with SCADA Control Room via GPRS/GSM based wireless technology in order to create redundancy in telemetry to avoid loss of communication & Data. Whereas, in case of Chembarambakkam and Red Hills reservoir remote PLC_s shall communicate with Poondi master control room via. GPRS/GSM wireless communication only. ֎ It should be possible to view the reports of SCADA system without requiring any software, from any PC, using web-based protocols/webserver. ֎ Programmable according to IEC 61131 standard ֎ Data logs should be stored inside the CPU and should be downloadable in CSV format. ֎ Integrated digital In- and Outputs and analog Inputs. It should be possible to increase the I/O handling capacity of the PLC, without changing the CPU. To control and manage the gate position sensors, the VFD’s, other I/o for operations. ֎ Scalable and modular extensibility with In- and Outputs via signal modules, signal board, technology modules and additional communication capabilities ֎ Integrated technology functions for counting, measuring, controlling and motion control ֎ Integrated high speed counting Inputs and pulse Outputs (PWM/PTO) ֎ It should be possible to remotely configure the PLC from the master control room.

֎ Each CPU shall be tested to work in a temperature range of 0 to +50 degree Celsius. ֎ The CPU shall have integrated non-volatile memory capacity of not less than 1 MB & Expandable CPU memory with optional memory card up to 32GB ֎ Expandable functions via modules: RJ45, Master/Slave, Serial Interface, RS232/RS422/RS485, AS-i, CAN Open, Energy Meter, Condition Monitoring ֎ Suitable industrial grade AC to DC Power Supplies shall be mounted inside each PLC_. Each PLC_ shall have separate power supplies for electronics and field instruments. Surge Protection Device shall be provided inside each PLC_, to safeguard against transient & lightening surges. ֎ Industrial grade ethernet convertor shall be housed in each PLC located at Reservoir top for optical communication between PLC & central controller. Each PLC shall have GPRS modem for wireless based communication with Master SCADA Control Room. ֎ Each PLC shall also be integrated with digital drive VFD starter panel. The PLC equipment shall be housed in a properly sized, weather-proof panel and must be protected with lightening & surge arrestor. The PLC shall be designed as per following minimum specifications: a. Panel inside Climatic Conditions ֎ The panel shall be fitted with two cooling Fan’s with filters, and protection, for better control of internal temperature. The individual cooling fans shall be controlled /switched ON/OFF by the PLC according to the application requirement. b. Temperature Monitoring ֎ The PLC panel shall be fitted with the temperature sensor/ Thermostat and shall be connected to the monitoring system. The monitoring system shall continuously monitor the panel temperature and if it exceeds the set value, it shall automatically switch ON the cooling Fan’s. The cooling FAN shall be Switched OFF after the temperature of the panel is brought back to normal level. o In case of Emergency Sequence of power back-up, the cooling FAN shall be switched OFF to save the power.

֎The PLC shall be capable of monitoring and controlling the temperature inside the panel and shall transmit the following information to the central control room. ֎ Panel Temperature o Status of cooling fans c. Power Supply Scheme Protection shall be provided in the input side of the mains power supply as follows; (i) Input mains Fault Protection: MPCB of suitable ratings shall be provided by supplier for mains power supply fault level protection. The mains input shall be protected using MPCB (with adjustable current limiting) and auxiliary signalling contact. Auxiliary signalling contacts shall monitor the Healthy/Trip condition of the MPCB. The signalling contact status information shall be updated in the control room. (ii) PLC can be provided with Isolation transformer for 415 to 230 Vac. Also, the relay board/contactor switches to be installed in motor starter panels for acquiring the status of electrical parameters shall be from reputable manufacturers with better stand ability against voltage fluctuations. (iii) Control Voltage: The proposed PLC system control power supply voltage shall be 24V-48VDC and the same shall be derived with the use of SMPS Power Supply Unit. The SMPS input power shall be protected with suitable MCB. The power to the input of the SMPS shall be switched ON/OFF from the PLC through Auxiliary relay contact. The panel control switch gear, PLC unit, Communication unit, HMI Screen Panel, indication lamp, hooter, instruments, Auxiliary Relays, Signal Conditioners/isolators, etc. shall be energized by control voltage of 24V -48V DC. d. Power Supply On/Off ֎ All the field instruments integrated with each remote PLC, shall be connected to the single power supply bus and energized with the control voltage supply of 24 - 48 VDC. The PLC according to the application program (periodically) shall switch OFF the control voltage supply via the DC contactor, and Switch ON the control voltage supply after a programmable time delay by actuating the DC Power contactor and the use of programmable mechanical/electrical timer switch gear unit automatically to clear the memory and other floating memory locations errors, warning, faults, etc.

֎ Ultimately it shall Reset the PLC. The power supply ON/OFF function command shall be activated manually, locally or through timer fitted PLC the event shall be recorded in the database and suitable reporting system shall be implemented. e. GPRS Communication Network ֎ The proposed Intelligent GPRS communication unit shall have GPRS communication network capability. ֎ Reliable Integration: The modem should be very tightly integrated with the PLC network. ֎ Failure of Global System for Mobile Communications: The PLC should store data in file in buffer memory of at least 2MB if unable to transfer due to maintenance of Global Packet Radio Service of the service provider or power failure in the cell towers or cell channels switching center, etc. Data will be transferred to central location in secure manner. ֎ No data loss in case of no connectivity shall be achieved. In case of failure of GPRS network the GSM communication shall be opted as a wireless mode to communicate with SCADA system at master SCADA control room. ֎ The VSAT Communication network is the primary backbone during monsoons. All three reservoirs and ICCC are equipped with VSAT connectivity. ֎ The Extended C band VSAT offers a reliable communication link in disaster-prone areas where terrestrial networks might be compromised. ֎ The Extended C band VSAT Extended is less susceptible to rain fade and solar flares and ensures connectivity for operations of reservoirs during monsoons. ֎ During non critical periods and for video streaming, broadband internet and GSM/GPRS is used. PLC / RTU The PLC should have inbuilt RTU functionality with a support for USB/RS 485/RS232/Ethernet port Modem connection. The PLC s shall have minimum communication ports as follows: (a) One RS485 interface.

(b) 1x RS232 ports for the PLC maintenance and configuration. It shall be possible to increase the number of communication ports in the PLC by addition of cards, if required in future. (c) PLC shall be designed with cyber security features based on IEC 62443-4-1 (SDLA certification) & shall have international certification (Achilles Level II/equivalent certification) or EDSA certification based on IEC 62443-4-1 for specific model proposed by supplier. The access to the Server shall be restricted with passwords both at Windows level and at Application Level. Also, all the data should be stored in a separate file system which can be independently accessed by the Remote Network without disturbing the PLC operation and thereby maximizing the cyber security. (d) The PLC should support for follow minimum features: ֎ Should have the facility for the Force Simulation ֎ Facility of Forcing Input /output variables when the physical devices are not functional ֎ Should have user access with password protection ֎ Should have the facility to program the PLC for all the different phases (e) The PLC based SCADA system should have the facility of the Web Server, the same shall be audited by NIC & hosted by NIC server in order to minimize the cyber security issues. (f) The PLC should support firmware upgrades. (g) The PLC should have facility of storing intermediate variables ֎ Program protection feature, network filter setup, Operation log function, function removal feature should be available. ֎User authentication, user-based operation restriction, and CPU operation restriction should be available. ֎ The CPU should be fast enough and capable of multi-tasking capabilities like running various tasks at different programmable cycle times. ֎ The PLC shall support all the file operating functions so that CSV file log can be stored in the basic CPU memory/buffer memory of GPRS modem for maintaining the log in case of network connection failure.

֎ The PLC shall be designed to a modular concept, with separate modules for each function. The modules shall be rack mounted and may be quickly exchanged for field repair. It shall not be necessary to remove field wiring in order to exchange a module. ֎ The PLC shall support a wide range of input /output signals including status inputs, pulse (accumulator) inputs, analogue inputs, analogue outputs, and control outputs. The PLC shall support any combination of the above I/O points. ֎It shall be possible to add PLC ’s and software enhancements in the future, without taking the system out of service. The design and physical layout of the PLC equipment shall be on a modular basis, so that extra facilities, such as an increase in the number of status points or analogues, may be added with minimum of disturbance. ֎ The PLC shall be expandable by simply adding I/O modules to the system bus. Other than user-friendly configuration of the new modules, no additional PLC software or firmware shall be required. ֎ The operational status of the PLC shall be indicated on the front panel of the processor module by means of LED lamps. In addition, each I/O card shall have LED status indication. ֎ Modbus TCP/IP on Ethernet /Profibus communication (IEEE 802-3, or IEC 60870-5-104) shall be provided for PLC network interconnection towards Master station. ֎ SCADA System is to be capable for configuring of PLC remotely, from Master Control room ֎ Program protection feature, network filter setup, Operation log function, function removal feature should be available. 3 Micro-processor /Micro-Controller Module (CPU) ֎ Built-in minimum 5 MB non-volatile work memory should be available for storing program Data and log records & load memory of minimum 64 MB shall be supported for storing data, programs and log records as files Built-in Ethernet port should be available. ֎ In addition to normal scanning, CPU module should have an independent multiple constant scan function capable of a maximum scan speed i.e. fast response should also be achievable with a single CPU.

֎ "Hot swapping" of modules while the device is powered on during runtime ֎ CPU should have a compact body. ֎ Large-capacity programs and large device sizes shall be supported to cope with advanced, complex control applications ֎A rich set of functions should be provided to facilitate program debugging and maintenance. For example, a forced SET/RESET function independent of program processing results. ֎ PLC shall employ solid-state technology and use an industrial standard, suitable for operation in an aggressive environment with high levels of temperature, humidity and dust being common. It shall operate correctly up to a temperature of 50 degrees Celsius and up to 95% non-condensing humidity. ֎On-board battery backed Real Time Clock (RTC) is required. The RTC will operate on the battery power even when the main power is lost ֎ The PLC shall have a separate watchdog circuit independent from the main processor, which will reset the system if the firmware program fails in any way. The watchdog circuit shall be capable of being enabled or disabled by means of a jumper or by software. a. Power Supply Modules ֎ DC Power Supply Unit (PSU) of voltage: 24 -48 VDC shall feed PLC / RTU power supply modules. ֎Doubled power supply modules shall be fitted per each PLC configuration. b. Communications Interfaces ֎ Communication interfaces shall correspond communications between the central PLC (master PLC controller) and distributed PLC units, via hardwired OFC cable and GPRS wireless technology at Poondi reservoir & head regulator sites whereas for Chembarambakkam and Red Hills and other remote locations of early Flood warning station & gauging sites, the communication etween Central PLC controllers & Data logger shall be through wireless GPRS/GSM communication. ֎ Adequate number of process Bus (Profibus/Modbus over Ethernet TCP/IP) Communication Ports shall be configured for communication interfacing to intelligent Instrumentation. Serial communication RS232 Port/Ethernet for local laptop connection shall be available as well.

֎The RTU/PLC at Reservoir & head regulator gates shall be communicating to master control Room through Optical Fiber Cable (OFC). It should be possible to remotely program RTU/PLC from the control room. Industrial grade optical fiber convertor shall be housed in each RTU/PLC at Reservoir & head regulator for optical communication between RTU/PLC and central controller. 4 I/O Facilities (i) General ֎ PLC analogue and digital inputs and outputs shall meet the requirements of test voltage of class II of IEC 255-4 appendix E. ֎ The PLCs should be of modular structure, equipped with separate I/O modules for each type of I/O signals, as follows. ֎ Full details of the management of digital and analogue data input shall be submitted for approval. ֎ The PLC shall have a minimum 20% spare I/O count for each type of module. (ii) Analogue Inputs ֎ Analogue inputs shall be capable of accepting current signals of, (4-20) mA, with over range capabilities and support for 2/4 wire communications ֎ All components used in measuring circuits that affect accuracy shall be of high stability and low temperature coefficient. ֎ A/D conversion shall be provided on each analogue module. The module scan cycle shall be rapid so as to satisfy the overall analogue response time specified to the master workstations. ֎ It shall be possible by means of the PLC configuring software, to modify the signal dead-band, so that luctuating signals are not continuously reported to the Master Station. (iii) Digital Inputs. ֎ Digital input modules shall be optically isolated. Digital filtering to suppress contact bounce shall be provided. In addition, software filtering of two successive cycles shall enable confirmation of state.

֎ To reduce data transmission, time tagging shall be selectively applied. Only some inputs shall be time tagged at the PLC , but other inputs shall be time tagged on arrival at the Master Station (iv) Digital Outputs ֎The digital output modules shall support isolated outputs in, latched and BCD mode. Individual LEDs will indicate the status of each output. The outputs shall be isolated to at least 500V dc. Controls transmitted between the control station and the PLC shall comprise a select, check-back, execute sequence (or other means of providing high message security). ֎On receipt of a select message, the PLC shall prepare to operate the output relay, and then return confirmation of correct selection of the relay to the Control Station. This signal shall be obtained as far as possible and shall be generated locally, not derived from the incoming signal. On receipt of the execute command, the output relay shall operate, and confirmation of execution shall be returned to the Control Station. ֎ Not more than one digital output shall be possible at a time. Selection of two or more contacts simultaneously or in quick succession without one having been completed, shall result in cancellation of both requests, and return an alarm to the Master Station. ֎ Software interlocking schemes shall be applied with reference to process requirements. (v) Analog Outputs. ֎ The PLC shall support analogue set point outputs. These may be used to issue controls directly to plant controllers, or to drive displays. ֎ Analogue outputs shall generate (4-20) mA DC output signals into a minimum load of 500 Ohms at a nominal operating voltage of 24V DC. ֎Simultaneous operation of individual digital outputs shall be provided, where this facility is required. Set point outputs shall provide the security to ensure that false selection of controls is minimized, similar to individual digital outputs.

PLC Operation Features i. Operation with SCADA Control Station ֎ PLCs shall have their own unique address and not transmit information to the Control Station without the request. In order to reduce communications channel load, PLCs shall incorporate data transmission reduction methods. PLC shall reply to each interrogation on a “Report-by-exception” basis with the Control Station, also being fully updated on a regular basis. ֎ Digital input data shall only be transmitted when the status has changed since the last pool interrogation. Analog values shall be transmitted when a defined percentage change occurs from the last transmitted value. Each PLC reply shall automatically include the verification of the address in the response. ֎ Full details of the management of digital and analogue data input shall be submitted for approval. ֎ PLCs shall be also available to be polled at any time from the Control Station, either on a periodic basis or on operator command. In case of polling, all inputs may be scanned. ֎Control messages from the Control Station, shall be capable of being initiated at any time to control the Reservoir, and shall have priority over all other messages. ֎ The communication system shall have feature of assured delivery of data & commands using the suitable communication protocols. ii. Automatic Restart ֎ Power interruption and /or communications failure, the PLC shall be arranged to restart automatically. This may be accomplished by retaining memory in non-volatile store. , All Three reservoirs should be equipped with one water level sensor. Any Cable / Wiring work the external protoction arrangements should be ensured Complete complying with standard specification and as directed by engineer in charge. ( As per Quotation Rate )

Supply, Transportation, Installation, Testing and Commissioning of 3 Phase VFD Starter panel for each motor of Dam & head regulator gates which shall consists of Control unit, VFD, S.P.P, MCB, OLR, Timer, Main Switches including cabling & Electronic Digital Indicator etc. VFD STARTERS PANELS Ambient Temperature - From 0ºC to + 55ºC, Humidity - 5 to 95 % (non- condensing), POWER MODULE -Compliance with standards - UL, CE, C-Tick (RCM), Input Voltage - 380 ... 480 V +10 % -20 % 3 Phase AC, Rated power - (IEC) 11.00 kW, Input Frequency - 47 ... 63 Hz, Output Current - 26.0 A Communication - Modbus RTU/PROFINET/Ethernet/IP, Degree of protection - IP55 / UL type 4, Pulse frequency - 4 kHz, Output frequency for vector control - 0 ... 200 Hz , Output frequency for V/f control - ֎... 550 Hz, Power factor λ - λ 0.90, Efficiency - η 0.97, Overload capability, Low Overload (LO) - 1.1 x rated output current (i.e. 110 % overload) for 57 s with a cycle time of 300 s 1.5 × rated output current (i.e. 150 % overload) for 3 s with a cycle time of 300 s , Overload capability High Overload (HO) - 1.5 × output current rating (i.e., 150 % overload) for 57 s with a cycle time of 300 s 2 × output current rating (i.e., 200 % overload) for 3 s with a cycle time of 300 s , Cooling - Internal air cooling. ֎ The VFD shall be provided for each gate of Poondi, Chembarambakkam and Red Hills & its Surplus, Scour, Cana and Intake wells regulators, with following minimum features. ֎ 3 Phase VFD Starter panel shall consist of RS485 Control unit with Closed-loop control methods and sufficient digital I/o and Analogue I/O, relay change & contact,

֎The control module must be able to drive motors with the following control modes: linear, square law, parabolic and parameterized V/f characteristic, V/f with flux current control (FCC), V/f characteristic with forward/reverse current control, linear and parabolic V/f characteristics with eco mode V/f ECO linear / square-law for additional power saving, vector control without sensor, torque control without sensor. ֎Protection Circuit breaker class 10 for motor protection, Single Phasing Preventer, Output reactors to reduce the rate of voltage rise (dV/dt) and the magnitude of the current peaks, Timer relay, Main Switches of reputed makes including wiring and Electronic Digital Indicator etc. ֎ The drive system must be protected through thermal motor protection, thermal converter protection, monitoring for under voltage and overvoltage, overloading, grounding, short circuiting, stalling, and blocking of the motor. All digital and analogue inputs and outputs must be freely parameterized and assigned to a specific function in the factory setting. To parameterize the drive, an integrated USB/serial interface for PC/Laptop connection is needed; saving and loading parameter records and firmware updates must be possible. The terminals have to be identified by replaceable labelling strips for individual marking. The VFD shall be designed with EMI/EMC features as per latest IEC standards. Any Cable / Wiring work the external protoction arrangements should be ensured Complete complying with standard specification and as directed by engineer in charge. ( As per Quotation Rate )

Supply, Installation, Testing and Commissioning of Surveillance Bullet Camera Surveillance System ֎ Primary Purpose of Surveillance system is to view gates movement from SCADA Control stations. Operator should be able to see that the gates move up/down or stop when the appropriate command is given. ֎ Bullet cameras IP based shall be placed to monitor the position of all the gates of each of the reservoirs (Poondi, Chembarambakkam & Red Hills) & its head regulators and control stations whereas the PTZ cameras shall be installed on the main areas of the reservoirs (Poondi, Chembarambakkam & Red Hills) in a way to ensure the complete monitoring of the instrumentation system. These cameras shall be connected with NVR (Network video recorder) which shall have a memory of at least 30 days. Cameras shall be connected to internet, to have its accessibility from farthest point through IP address. ֎ The cameras shall have a provision of connecting with NVR through hardwiring using video cable (RG-6 coaxial cable)/OFC and simultaneously through internet using IP address of cameras. ֎ Each bullet camera shall be installed in such a fashion that it shall be able to monitor at least one gate at Reservoir site and two gates at Head regulator site. Bullet camera shall also be provided at each control station for monitoring of SCADA system. The following minimum features shall be available in CCTV system (i) Bullet Camera (Fixed Type)- IP based Night Vision (I.R.) Outdoor Weather Resistant, 2 Mega Pixel,72 LED Colour Camera.6 or 8 or 12 MM (According to site suitability) 2 MP Auto Iris Lens in Elegant Metal Die Cast Housing. Outdoor weather resistant IP 66. Any Cable / Wiring work the external protoction arrangements should be ensured Complete complying with standard specification and as directed by engineer in charge. ( As per Quotation Rate )

Supply, Installation, Testing and Commissioning of Pan Tilt Zoom (PTZ) Surveillance System ֎ Primary Purpose of Surveillance system is to view gates movement from SCADA Control stations. Operator should be able to see that the gates move up/down or stop when the appropriate command is given. ֎ Bullet cameras IP based shall be placed to monitor the position of all the gates of each of the reservoirs (Poondi, Chembarambakkam & Red Hills) & its head regulators and control stations whereas the PTZ cameras shall be installed on the main areas of the reservoirs (Poondi, Chembarambakkam & Red Hills) in a way to ensure the complete monitoring of the instrumentation system. These cameras shall be connected with NVR (Network video recorder) which shall have a memory of at least 30 days. Cameras shall be connected to internet, to have its accessibility from farthest point through IP address. ֎The cameras shall have a provision of connecting with NVR through hardwiring using video cable (RG-6 coaxial cable)/OFC and simultaneously through internet using IP address of cameras. ֎ Each bullet camera shall be installed in such a fashion that it shall be able to monitor at least one gate at Reservoir site and two gates at Head regulator site. Bullet camera shall also be provided at each control station for monitoring of SCADA system. The following minimum features shall be available in CCTV system (i) Pan Tilt Zoom (PTZ) 36 X Optical and 12 X Digital Zoom; 2 Mega Pixel IP (DIGITAL) camera, 500 metres. Night Vision (Multiple Intelligent Array system) in IP66 Weather Resistant Outdoor Metallic Housing. Any Cable / Wiring work the external protoction arrangements should be ensured Complete complying with standard specification and as directed by engineer in charge. ( As per Quotation Rate )

Supply, Installation, Commissioning of NETWORK VIDEO RECORDER (NVR) 32 Channel 1080 P Full HD, Real time Recording and Reviewing in Compression Format with dedicated sufficient Hard Drive to have memory of at least 360 days as per technical Specifications etc., Surveillance System ֎ Primary Purpose of Surveillance system is to view gates movement from SCADA Control stations. Operator should be able to see that the gates move up/down or stop when the appropriate command is given. ֎ Bullet cameras IP based shall be placed to monitor the position of all the gates of each of the reservoirs (Poondi, Chembarambakkam & Red Hills) & its head regulators and control stations whereas the PTZ cameras shall be installed on the main areas of the reservoirs (Poondi, Chembarambakkam & Red Hills) in a way to ensure the complete monitoring of the instrumentation system. These cameras shall be connected with NVR (Network video recorder) which shall have a memory of at least 30 days. Cameras shall be connected to internet, to have its accessibility from farthest point through IP address. ֎ The cameras shall have a provision of connecting with NVR through hardwiring using video cable (RG-6 coaxial cable)/OFC and simultaneously through internet using IP address of cameras. ֎ Each bullet camera shall be installed in such a fashion that it shall be able to monitor at least one gate at Reservoir site and two gates at Head regulator site. Bullet camera shall also be provided at each control station for monitoring of SCADA system.

The following minimum features shall be available in CCTV system (i) Standalone NETWORK VIDEO RECORDER (NVR) 32 Channel 1080 P Full HD, Real time Recording and Reviewing in H.264 Compression Format. With HDD. Remote Viewing Capability through Internet /Android /Apple/ Mobile App Xmeye /CMS software with password protection & username. (ii) Necessary mounting arrangement like MS/ GI Poles 4/6/8-inchDia - Medium Grade Pipe of Standard Make with suitable length along with junction box & other accessories as per the site suitability shall be provided by the supplier for installation of CCTV system along with associated Civil works. (iii) All cameras shall be protected using metallic enclosure for protection against physical Reservoir age from monkey and vandalism. Any Cable / Wiring work the external protoction arrangements should be ensured Complete complying with standard specification and as directed by engineer in charge. ( As per Quotation Rate )

Supply, Transportation, Installation, Testing and Commissioning Programmable Logic Controllers CPUs with memory, integrated digital & analouge I/Os, Communication modules, With Scada Engineering Station and Display etc., as per Technical specification Complete complying with standard specification and as directed by engineer in charge. SCADA Sub Control Centers at Poondi, Chembarambakkam and Red Hills Scada Sub Control Room (SCR) – At Poondi, Chembarambakkam and Red Hills ֎ SCR’s localized or decentralized control stations that manage specific sections or components, such as automation at Poondi, automation at Chembarambakkam and automation at red hills. Combination of 3 sub-SCADA/automation forms a larger SCADA (Supervisory Control and Data Acquisition) system. ֎ These centers operate autonomously to monitor, control, and gather data from 3 SCADA Sub systems, or set of processes within an overall network. They typically serve as intermediaries between field devices (PLC next to gates) and the main control center (Master Control Center/ICCC), offering redundancy, localized control, and operational efficiency. ֎ SCR’s are strategically located at the site of each reservoir. Here at Poondi, Chembarambakkam and Red Hills. ֎ SCADA Sub-Control Centers (SCRs) are implemented in complex and geographically distributed systems for several critical reasons. These centers play a vital role in ensuring the efficiency, reliability, and safety of the overall SCADA system. ֎ SCRs provide localized control and monitoring in these dispersed 3 locations, allowing for more effective management of each specific area. ֎ SCRs allow each part of the system to operate independently of the Master Control Center. This means that even if communication with the central system is lost, the SCR can continue to manage its area, ensuring uninterrupted operations. ֎ By processing data and making decisions locally, SCRs reduce the time it takes to respond to changing conditions. For example, if a water level in a reservoir exceeds a threshold, the SCR can immediately open a spillway without needing to communicate with a distant central control center.

֎ SCRs can detect and act on alarms more quickly because they are closer to the field devices. This is crucial in emergencies where immediate action is required to prevent damage or danger. ֎ SCRs add a layer of redundancy to the SCADA system. If the Master Control Center fails or is compromised, SCRs can continue to operate autonomously, ensuring that critical processes are maintained. ֎ SCRs improve the system’s fault tolerance by isolating failures. If a failure occurs in one part of the system, it does not affect the entire network, as the SCRs can contain and manage the issue locally. ֎ Each SCR can be tailored to the specific needs of its area, implementing local control logic, alarms, and reporting requirements that are most relevant to that part of the system. ֎ SCRs can preprocess and filter data before sending it to the Master Control Center, reducing the communication bandwidth required and ensuring that only relevant data is transmitted. This also allows for quicker local decision-making based on processed data. ֎ By handling data locally, SCRs help manage the complexity of large datasets, making it easier to analyse data for specific areas without overwhelming the central system. ֎ If the Master Control Center goes offline due to maintenance, network issues, or disasters, SCRs can maintain operations, ensuring that critical infrastructure for flood control continues to function. ֎ SCR’s are operated by SCADA technicians locally, and mostly controlled by ICCC. ֎ The SCR is continuously active and operational, monitoring all parameters and processes 24/7. ֎ The SCR constantly monitors real-time data from all connected sensors and devices. This includes water levels and flow rates. ֎ Continuous feedback is provided by the system, where the SCR receives data, processes it, and immediately makes decisions to control the process. This loop is essential for maintaining stability and ensuring that all parameters stay within desired ranges. ֎ The SCRs should be equipped with the necessary infrastructure, including power supply, ventilation,

֎ lighting, and secure access controls. WRD will provide mentioned infrastructure requirements. ֎ The SCR Continuously monitor reservoir parameters such as water levels, gate positions and inflow data obtained from MCR.o Executes predefined control logic based on sensor inputs. ֎ Operate gates based on real-time data and predefined operational criteria. ֎ Continuously send real-time data to the MCR. ֎ Execute commands issued by the MCR, such as adjusting reservoir operations during city-wide water management activities. ֎ In case of communication failure with the MCR, operate independently based on pre-set rules until communication is restored. ֎ Prioritizes alarms based on severity and triggers immediate local actions. ֎ Local operators can acknowledge and reset alarms. All alarms and actions are logged and reported to the MCR. ֎ A touchscreen or panel PC interface that allows local operators to monitor and control the reservoir operations ֎ Maintain local logs of all monitored parameters, control actions, and alarms for troubleshooting and analysis ֎ Store a limited amount of historical data locally, which can be transferred periodically to the MCR for long-term storage. Automation Components: (1) RTU Panel: Typically, wall-mounted or floor mounted dedicated control cabinet should be provided. (2) Central Processing Unit (CPU): The core of the PLC, responsible for executing control algorithms, processing inputs from sensors, and issuing commands to actuators. (3) 32-bit RISC (Reduced Instruction Set Computing) or similar processor (4) Processing Speed: 40ns/step or better; 0.1 ms per 1K instructions (5) Program Memory: 384Kb or better

(6) Analog and Digital I/O’s: as required, at each site, bidder to propose. (7). Communication: Ethernet, USB, Serial, Fieldbus – Profibus, Modbus TCP/IP, Profinet, CANopen etc. (8) RTC: Built-in, battery-backed, accuracy ±1 minute per month (9) Operating Temperature: 20°C to +60°C (10) Input/Output (I/O) Modules: Interfaces for connecting field devices like sensors (inputs) and actuators (outputs). (11) Digital I/O Modules: Handle binary signals (e.g., on/off states from switches, or controlling on/off devices). (12) Analog I/O Modules: Handle variable signals (e.g., 4-20 mA or 0-10 V from sensors like flow meters, pressure sensors). (13) Interfaces for connecting the PLC to the SCADA system and other devices (e.g., Modbus TCP/IP, Profibus, or Ethernet/IP). (14) Redundant communication modules to ensure continuous operation even if one network fails. (15) Power Supply Module: Provides stable power to the PLC and its components, with built-in surge protection. (16) Modbus, DNP3, or IEC 60870-5-104 Interfaces: For communication with the SCADA system and other remote units. (17) Serial and Ethernet Ports: For connecting to various types of field equipment and networks. (18) Redundant Communication Paths: Ensure reliable data transmission to the MCR and other control centers. (19) I/O Interface: Handles input from field sensors and output to actuators, similar to the PLC but often more specialized for remote data collection. (20) Power Supply: Independent power source, often with battery backup, to maintain operation during power fluctuations or outages.

PLC Programming: (21) Sequential Function Charts (SFCs): Used for designing the control logic that sequences operations (e.g., opening a valve when the water level reaches a certain point). (22) Ladder Logic: Commonly used for discrete control applications, where the control logic is represented in a format resembling electrical relay logic. (23) Function Block Diagrams (FBDs): For continuous control systems, where various control blocks (e.g., PID controllers) are interconnected. Equipment Arrangement at SCADA Sub Station – Poondi and Chembarambakkam: (24) SCADA Sub Control RTU Panel with 12” HMI (25) SCADA Sub Control PLC (26) Communication Module. (27) Broadband Internet with Public IP – 30 Mbps (28) VSAT Connectivity (29) UPS 6 KVA (30) Scada Engineering Workstation (31) Display – 72” Equipment Arrangement at SCADA Sub Station – Red Hills (32) SCADA Sub Control RTU Panel with 12” HMI (33) SCADA Sub Control PLC (34) Communication Module (35) Broadband Internet with Public IP – 30 Mbps (36) VSAT Connectivity (37) UPS 3 KVA (38) Display – 72” Any Cable / Wiring work the external protoction arrangements should be ensured Complete complying with standard specification and as directed by engineer in charge. ( As per Quotation Rate )

Telemetry, gateway, VSAT and GSM/GPRS communication system for Remote controlling of the gates through SCADA at Intergrated command control station and synchronisation with local control station (Poondi, Chembarambakkam and Red Hills), Tele-metering and Supervisory Control ֎ The Contractor shall provide broadband internet connection with minimum internet speed of 30 mbps with static IP at SCADA Sub control rooms. ֎ The contractor shall provide broadband internet connection with minimum speed of 100 mbps with static IP at Integrated command control centers. ֎ VSAT (Very Small Aperture Terminal) connectivity is used to establish reliable communication between geographically dispersed Sub-Control Centers (SCRs) and the Master SCADA Control Center. ֎ VSAT is the primary backbone for communication between SCR’a and ICCC during monsoon and GSM acts as failover. ֎ During disaster times, when GSM completely fails, all communication completes falls back on VSAT and is used to trans receive the necessary control data only. ֎ Here VSAT is integrated with other communication technologies (e.g., cellular networks) to create a hybrid network that leverages the strengths of each method. This ensures comprehensive coverage and improves the overall resilience of the SCADA system. ֎ VSAT can be configured as an automatic failover option. If the primary communication method fails, the system automatically switches to the VSAT connection without interrupting SCADA operations.

֎ VSAT can serve as a backup communication link in a SCADA system. If the primary communication method (e.g., GSM/Broadband) fails, the system can automatically switch to VSAT to maintain connectivity, ensuring uninterrupted operations during non monsoon times. ֎ VSAT networks can be equipped with robust encryption and security protocols to protect data transmission from unauthorized access or cyber threats. This is particularly important in SCADA systems, as we manage critical infrastructure, where data integrity and confidentiality are paramount. ֎ The Contractor shall also provide the digital transmitters and indications, and terminal strips via the bus system. The SCADA System software should have the facility to track the non-functional sensors on daily basis and display on the web. ֎ The successful supplier shall upgrade all such developed software during the O & M period on need basis and provide the latest versions of all such software including Source Codes, while handing over the facilities to Authority. a) Tele-metering Items - Gate position indications. - Water level indication at pre determined locations. - Inflow indication a pre determined locations

VSAT Technical Specifications Make Model No. Satellite Antenna ֎ Reflector Type: compression moulded thermoset offset re¬flector GFRP. , ֎ Reflector Size: 1.2m , ֎ Operating Frequency: Tx: 6.725-7.025 GHz Rx: 4.500-4.800 GHz, ֎ Polarization: Linear Orthogonal, ֎ Sense: Orientable, ֎ VSWR Tx: 1.3:1 , Rx: 1.3:1, ֎ Sidelobe Envelope: ITU 580-6, ֎ Mid Band Gain (± 0.2dB) Tx: 36.80 dBi Rx: 33.20 dBi, ֎ Antenna Optics: Prime Focus, Offset Fed, ֎ Mount Type: Elevation Over Azimuth, ֎ Mount Material: Mild Steel (Hotdip Galvanized or Powder Coated), ֎ Steerability: +/- 360° Coarse, + /-20° Line, ֎ Elevation 0° to 90° fine, ֎ Antenna Noise Temperature: 50°K @ 30° EL, ֎ Interface Ports: Tx - N-Female or WR137 Rx - WR229, ֎ Antenna Cross Polarisation, ֎ On Axis (db): 30db, ֎ 10° off axis 25db, ֎ Operating Temp: -40°C TO 60°C ,֎ Humidity: 95%, ֎ Shock & Vibration: As Encountered During Shipping And Handling , The refl¬ector should have excellent refl¬ectivity for good pointing accuracy required for INSAT XC- band beamwidth. Satellite Router ֎ Full Featured IP Satellite Router, ֎ Band: XC Band, ֎ Operating Voltage: 100 – 240V AC, ֎ Operating Temperature: 0 to 50 Deg C, ֎ Recommended Antenna Size: 0.76m and higher, ֎ Outdoor Unit Transmit Power: upto 4 Watt, ֎ Interfaces: , ֎ RF 75 Ώ Connectors: 2 Female F Type , ֎ RF IN and OUT Frequency: 950-2300 MHz, ֎ Ethernet 10/100/1000 BaseT RJ-45, ֎ GUI Based local management accessible over web, ֎ OTA Software Upgrades

֎ SNMP enabling advanced NMS, ֎ Full FCAPS Management, ֎ Forward Channel: , ֎ Standard: DVB-S2 Adaptive Coding and Modulation (ACM) ֎ Modulation: QPSK, 8PSK, 16APSK, 32APSK , ֎ Coding: LDPC, BCH, ֎ Carrier rate: 1.5Msps-67Msps (250Mbps), ֎ FEC: 1/4, 1/3, 2/5, 1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 8/9, 9/10, ֎ Return Channel:,֎ Modulation: QPSK, 8PSK , ֎ Coding: Turbo coding, ֎ Inbound rates: Symbol rate - 128ksps-4Msps, ֎ Access Scheme: MF-TDMA, DVB-RCS, Dynamic Channels, ֎ FEC: 1/2, 2/3, 3/4, 4/5, 6/7, ֎ IP: DHCP, NAT/PAT, DNS caching, IGMPv2, SIP, DiffServ, IPv6 ֎Security: AES-256 bit encryption, IP-Sec multiple tunnels, ACL Firewall, x.509 Terminal Authentication, 4G Router at remote SCADA networked locations: ֎ Interfaces: 1 – WAN port 10/100 Mbps; 3 – LAN port 10/100 Mbps , ֎ Interfaces: SIM Modules: 2 X 4G LTE Cat 4 up to 150 Mbps; 3G – up to 42 Mbps ֎SIM Slots: 2 Slots; Active-Active Manner, ֎ Band management: Band lock, Used band status display, ֎ Auto APN Learning, ֎ Band: LTE FDD: B1/B3/B8; LTE TDD:B38/B39/B40/B41; TDS CDMA: B34/B39; WCDMA: B1 , CDMA 1x/EVDO: BC0; GSM: 900/1800MHz, ֎ Statis Routing and Dynamic Routing to be supported, ֎ DHCP Static and Dynamic to be supported, ֎ Firewall: Zone Based, Stateful, NAT, PAT, custom rules, ֎ Authentication: Pre-shared key, digital certificates, ֎ IPSec, PPTP, L2TP, Open VPN to be supported, ֎ Accessible over SSH and Web GUI, ֎ Antennas :- 4 X LTE,, ֎ Input Power: 12V 1.5A ֎ Max Power Consumption 10W, ֎ Operating temperature 0°C to 75°C, The 4G router should be fully compatible/integratable with Satellite Router. By Adding SIM Cards, the combination should act as failsafe configuration with one GSM as primary connection and other GSM Connection and Satellite as Fall Back to achieve failsafe. Any Cable / Wiring work the external protoction arrangements should be ensured Complete complying with standard specification and as directed by engineer in charge. ( As per Quotation Rate )

Supply, Installation, Commissioning of Decision Support System with API's for external data sources of water level, Tide Level and discharge with visual representation of the sub basin, installed primary on private cloud and back up on onsite server with data integration and monitoring SCADA system for monitroing reservoir and automating reservoir with user interface, reportng, alerts, notifications, and intergration with third party RTDAS systems SCADA Master Control Center/Software Controller ֎ Communication software: Software that contains a mechanism for accessing controller data. (i) This software shall provide a fast, simple and secure connection of any field devices to the controller, integration of the controller in heterogeneous machine/plant structures and particularly efficient interfacing to the IT level. (ii) The software shall be used in all Ethernet networks thanks to the underlying TCP/IP communication. In particular, Software and network are fully compatible, thus permitting parallel operation. Therefore other field devices in addition to the CPU can also be linked (to the IT levels, for example) using the software., (iii) Software server directly installable in the Master SCADA controller, (iv) Data access, read/write, subscription for changes in value (v) Mapping of all enabled instances and types from the user program, (vi) Access to structures and arrays as complete objects (vii) The software can be used for the basic variation of the distributed IO, the controller with all variations, for example the Safety and Technology, and simulation software.

֎ The Master Control Software plays a central role by coordinating and managing communication with 3 Sub-Control Centers (SCRs) and their associated Remote Terminal Units (RTUs). These connections are established via reliable communication channels such as mobile radio, VSAT and Ethernet, ensuring seamless data exchange between the Master SCADA Control Center and the SCRs. The Master Control Software functions as an OPC server, interfacing with OPC clients hosted on the SCRs or RTUs using OPC DCOM or OPC UA protocols. This architecture enables real-time monitoring, control, and data acquisition across dispersed locations, providing a scalable and secure framework that integrates remote operations into a unified control system. The flexibility offered by OPC UA ensures compatibility across different platforms and networks, while the redundancy provided by dual communication channels enhances the system’s reliability, making it well-suited for critical infrastructure management. ֎ Consists of OPC server, teleservice gateway, for monitoring and control of RTUs via a secure tunnel, remote access and programming, alarming via SMS and wake-up function. ֎ Engineering software: Software for industrial automation is required, which allows the user to configure, program, test and diagnose the controller and panel for operation. (i) The software offers the user a complete, efficient and intuitive solution for all automation requirements., (ii) The software provides powerful programming editors with optimized compilers for programming that supports the programming languages Ladder diagram (LAD), Function block diagram (FBD) and Structured text (SCL)., (iii) The software system shall have provisions for a comprehensive library for the reuse and simple standardization of frequently used program sections., (iv) Password-based know-how protection against unauthorized reading and changing of the contents of program blocks shall be contained in the software package., (v) The team engineering, simultaneous processing of a task by more than one person, shall be supported. (vi) The software shall be able to operate on Windows 7 (64 Bit), Windows 8.1 (64 Bit), Windows 10 (64 Bit) and Windows Server (64 Bit). (vii) The software shall be provided on DVD's as packet delivery. The software has to license the current user and the usage shall begin with the start of the SW.

֎ The Software Controller – implements the function of a Controller as software on a PC with Windows. This enables a PC to be used for controlling machines or plants. With the PC-based PLC Software Controller, the complete automation tasks can be realized with only one automation device. PLC programs also drive control, manage database connection, provide visualization, and even safety functionality together at only one Open Controller or IPC. The PC-based central controller shall be independent of the within the operating system, running in parallel with the operating system. The software should allocate the PC resources such as interfaces, processor cores or memory directly andexclusively to the operating system or to the Software Controller. • Integrated Motion Control functionalities for controlling speed-controlled and positioning, support for external encoders, and measuring inputs. • Integrated web server for diagnostics and user-defined websites • Integrated Ethernet, and other network interfaces • Integrated OPC UA server for standardized communication paths ֎ The central controller & the remote PLC controller in the remote station shall have same features & certifications as stated in the bid document. The central controller & the PLC s shall be able to exchange data with each other freely & seamlessly, without requirement of any intervening hardware, apart from Optical Convertors. ֎ The remote PLC shall pass-on all the I/O information directly to the central controller and shall act as a slave. ֎ Master Control Software for the connection of up to 64 Remote Terminal Units / RTUs via VSAT, mobile radio or secured DSL/Ethernet communication modules to a control center with OPC Client using the OPC DCOM or OPC UA interface. Consists of OPC server, teleservice gateway, for monitoring and control of RTUs via a secure tunnel, remote access and programming, alarming via SMS and wake-up function.

(i) Complete and always traceable data recording through data buffering with an automatic time stamp. The complete network is synchronized automatically. (ii) Fast and flexible data communication: The operating personnel is informed automatically and quickly by alarms, statuses and values from the process (iii) Simple and cost-effective engineering: The cyclic or event-controlled transfer of measurements, set points or alarms can thus be implemented without programming effort. (iv) Remote diagnostics: Saving of traveling and maintenance costs thanks to cost-effective remote programming, diagnostics, control and monitoring via the Internet. (v) Industrial Security: Integrated security functions enable secure access to the controller via VPN technology and firewall. ֎ Data logs should be stored inside the CPU and should be downloadable in CSV format using a web browser. It should be possible to increase the I/O handling capacity of the PLC, without changing the CPU, by the addition of appropriate I/O cards. The central controller should have a non-volatile memory of at least 4 MB & with 16 MB memory card and should be tested for operation from region to region change in temperature range of 0 to 50 degrees Celsius. The central controller shall have high immunity to electro-magnetic interference according to IEC 61000-6-2 and vibrations according to EN 60068-2-6. SCADA System at Integrated Central Command Reservoir Automation ֎ The Master control room will have One server. ֎ The Customized SCADA software will accept information sent by all the remote PLC , Dataloggers , store the information in a data base, display the information in appropriate mimic displays, analyse past data and trends, will have the authentication feature by way of username and password for operating the software; Updating of parameters of the PLC along with instrument can be done interactively from this software. ֎ The master control room comprises of Server, Computer Nodes, Printers, and 10KVA UPS Backup.

֎ The network infrastructure is comprised of an internet connection of 100 Mbps with static IP, terminated on a UTM and distributed through switch. ֎ The development of software has to be customized with end user & customization of the software shall be in scope of supplier till the completion of 4 years’ operation & maintenance period. The Master control room will have main Master PLC system, main SCADA system, software with monitor, GPRS Modem, gateway software etc. ֎ The control system along-with SCADA Software shall be provided in the master control room/ICCC Chepauk for automatic gate operation of Poondi Reservoir & head regulator gates, Chembarambakkam and Red Hills reservoirs. The information available at control room should also be available on any other PC/Laptop and on mobile located at any place through web. The Data provided in Control Room should be displayed in complete explicit way and can be extracted in different formats. ֎ The master control/ICCC should be equipped with the latest Server with monitor and LED display/video wall. The master Control Room, equipped master SCADA software, from which the command, to spillway gates & flood alarming stations and other remote monitoring stations (i.e. Inflow & level Gauging sites) shall be provided. All signals shall be sent and received to/from the SCADA system located at master control room. ֎ A master controller shall define the required total gate opening & any other commands. The SCADA system shall compare the required value ֎ A master controller shall define the required total gate opening & any other commands. The SCADA system shall compare the required value with the total actual opening found by adding up the individual opening values, if the deviation of one or more gates from the required value is large enough, an ‘Open’- or ‘Close’- instruction shall be given to the respective gate(s). However, to prevent hunting of hoist the deviation should be beyond the preselected tolerance band. ֎ In a selection circuit the ‘open’- instruction shall be transferred to that gate, which at the time of the comparison controls the smallest opening. Similarly, a ‘close’ - instruction shall be given to the gate controlling the largest opening. ֎ SCADA Sub Control Room located at Poondi, Chembarambakkam, and Red Hills reservoirs shall have one PC/computer node with internet connection, through which in which the control operation and monitoring of Poondi, Chembarambakkam and Red Hills reservoirs sluice gates & discharge are monitored. ֎ In a selection circuit the ‘open’- instruction shall be transferred to that gate, which at the time of the comparison controls the smallest opening. Similarly, a ‘close’ - instruction shall be given to the gate controlling the largest opening.

֎ A Client SCADA Control Room located at Poondi, Chembarambakkam, and Red Hills reservoirs shall have one industrial grade PC with internet connection, in which the client SCADA software shall be installed for control operation and monitoring of Chembarambakkam and Red Hills reservoirs sluice gates & discharge. ֎ The required and actual openings agree, and the positioner cancels the instruction, or ֎ The gate had previously reached its limit position, or, ֎ The max. Permissible deviation (pre-set difference in position between controlled gate and average of all gates available) has been reached previously. ֎ The selected gate is not in operating condition. ֎ In the event of major changes in required size of opening, the gates shall be moved successively one step each, i.e. after re-setting all gates again agree within the pre-set margin in size of opening. After all available gates have reached their limit positions a corresponding signal shall be given. ֎ At any time, individual gates shall be allowed to be switched over from the automatic mode to manual mode of operation, and vice versa, however, the operation from the local panel cannot be overruled by the remote/automatic operation stage. Adjustments made manually are to be automatically compensated for with the other gates by the automatic control system. ֎ Manually adjusted gates shall, when returned to automatic mode of operation, be adapted to their normal functioning in the automatic mode. The automatic system shall work independent of the number of available gates with the same characteristic. If all gates have been changed over to MANUAL, the master controller shall be reset so as to permit a smooth switching-over to Automatic operation. ֎The system is to be designed to monitor the duration of the instruction. The monitoring is to prevent, that an instruction is maintained over a period, that is longer than a pre-select e.g. in the event of a malfunction of a gate selected by the controller, if the monitoring system is actuated, the particular gate is to be cancelled from the group of gates available for selection. Electronic attenuation is to be included to provide against unsteady level signals. The system should be compatible with flood fore-casting system to be provided by the employer for the monsoon period. a) Functions/ Features of SCADA Software

֎ Normally Dynamic Gate Operation Scheduling Program will decide position of each Gate depending on the Water Discharge requirement. ֎ Development of Dynamic Scheduling Program is included in the scope of work. ֎ The frequency of actuating the siren at respective flood warning stations shall be based on the set values of parameters & the type of alert (ex. Yellow, orange & Red) defined in SCADA system. ֎ Operator in master SACDA control room should be able to control movement of individual gates via. SCADA software. This is needed for testing and emergency handling. The customized, with lifetime licensed version SCADA software shall be designed, developed, Supplied, installed & commissioned by supplier based on the inputs provided by Engineer-in- Charge which shall have following minimum features: (i) It shall accept information send by all the remote locations /sites,. (ii) Stores the information in a data base, (iii) Display the information in appropriate mimic displays, (iv) Will have a provision to analyse past data and trends, (v) Will have the authentication feature by way of username and password for operating the software., (vi) Updating of parameters of the PLC /controllers along with instrument can be done Interactively from this software. (vii) Development of software to be customized with end user at Site., (viii) SCADA software shall be of at least 100 tags & screens shall be provided as per user requirement., (ix) Automatic alarm generation, (x). Automatic report generation, (xi) Auto e mail and SMS with web server facility, b) Trend Analysis ֎ The HMI at SCR and SCADA software shall provide for a real-time and a historical trend or plot capability. The plot function shall provide for pre-scaled display of selected process variables. The operator shall be able to select either subsets or supersets of the data presented. ֎ The plot function shall automatically scale the requested data to fit the time frame requested by the operator. The plot function shall display these data as a multiline chart with each variable easily determined by colour, pattern, or combination. For real-time data displays, the plot function shall scroll data as necessary to include newly acquired data on the display.

֎ The SCADA software will support trend data and displays as follows: ֎ Trend displays shall comprise line graphs with time on a linear, continuous horizontal or vertical axis and the trended variable on the vertical or horizontal axis. ֎ Trend graphs shall be capable of displaying required plots with adjustable time base with user specified time ranges. ֎ The capability to pan backward and forward within a selected time range to read the exact value of any displayed variable, by selecting a point on the graph or chart. ֎ The capability for each pan shall display individual ranges and units. ֎ Display of historical information as far back in time as desired shall be available on the history log. ֎ "Zoom" and "pan" facilities for both the trended variable range and the time axis range. The "zoom" facility shall allow an operator to compress or expand the axis range whilst the "pan" facility shall allow an operator to shift the origin of the axis. ֎ The software shall allow a user to define any zoom area by dragging a mouse across the trend. ֎ It shall be possible to define the section of the trend to be exported by clicking and dragging the mouse across the trend. Data shall be exported to CSV or TXT formatted files. ֎ Printing the trends or plots generated above by A3 Colour printer. c) SCADA Software should mandatorily provide GUIs from main menu with: ֎ Parameterisation and configuration set values of Sensor, ֎ Programming of PLC., ֎ Real time data monitor on GUI and LED display., ֎ File creation and Storage controller., ֎ External Data transmission controller. ֎ Burglar and alarm warning system controller. ֎ Power status monitor and logging. ֎ Motor status monitor and logging. ֎ Data exporting features, ֎ Integration of rating curves, ֎ Manual data entry and input programs, ֎ Printing graphical and tabular data PLC Programming

֎PLCs shall be reconfigurable from either a locally connected portable programming device /laptop and remotely over the communication links from the control station. ֎ Configuration changes shall be protected by access codes. ֎ User-friendly designed PLC programming editor supporting all IEC 61131-3 Programming languages shall be included in the set of engineering software. For local process control, the PLC shall support Open PLC programming standard, according to IEC 61131-3, including five main programming methodologies: • Ladder Diagram (LD) • Function Block Diagrams (FBD) • Instruction List (IL) • Structured Text (ST) • Sequential Function Charts (SFC) ֎ PLC application software shall be installed in contiguous PLC memory data area, in order to ensure sufficient PLC computing speed. The PLC memory shall be sized to ensure it is not more than 50% occupied and that maximum occupancy does not significantly slow down the computing functions. c. PLC Process Operation ֎ PLC shall be enabled for effective SCADA monitoring, control, and data transfer with control station, as well as for local PLC level closed loop process control, control logic and other local automation applications. ֎ The PLC shall be controlled by application software making it capable of the following minimum functions: • Command outputs • Select before operate feature • Digital filter • Adjustable chatter frequency • Alarm handling • Automatic Restart • Report by exception ֎ The PIC / RTU shall be of industrial grade with IEC certification d) SCADA Software Security Features ֎ The SCADA system shall be secure enough to allow access to any individual part of the system only to users with appropriate security level authentications. Application privileges shall be assigned to users or groups. Security areas may be created for graphics and tag blocks. ֎ The SCADA system software shall support an minimum 10 users. For each user, it shall be possible to define a password and the privilege level(s) and areas that are available to that user. Examples of privilege levels are: "operator" (can only change set points, read real-time and historical data, acknowledge alarms), "system administrator" (can change variable description, edit screens, perform backup/restore operations).

֎ The SCADA system software shall provide the capability to define a minimum of 8 access privilege levels. The software shall check to ensure that the user logged on has the correct privilege level for all actions he wants to perform. If the user does not have the correct privilege for an action, the software shall display a message informing the operator of insufficient privilege. ֎ The SCADA system software shall have a mechanism to restrict access to different areas of the project for each individual user or group of users (e.g. by defining access rights to mimics. ֎ The SCADA system shall provide the capability to disable “hot” keys such as Ctrl Esc, Ctrl Alt Del etc. to prevent operator access to unauthorized software. ֎ The SCADA system shall provide the capability to prevent access to the operating system by unauthorized personnel. a) Alarms/events management: ֎ The SCADA software shall support alarm and data logging, using description text and time stamp. ֎ The SCADA software shall not limit the number of alarm occurrences logged to a database. ֎ The SCADA software shall provide the ability for viewing alarms that are logged while the system is online or offline without causing any interruption to data acquisition or alarm processing. ֎ The SCADA software shall provide the capability for operator event logging with the logging of operator actions. The SCADA software shall be capable of logging the following information: Username, Action, Time, Date, Value, and Comment in free format, ֎ The SCADA Software shall notify the operator with graphical screen indication of the presence of an unacknowledged or new alarm. These indications will be organized in an alarm screen that can be made always visible, if customized so.

֎ The SCADA shall provide for audible alarm notification. The SCADA shall present alarms in an alarm screen in such a way as to allow easy identification of a new alarm, an unacknowledged alarm and acknowledged alarms. The SCADA shall provide the operator with the ability to review all alarms. ֎ The SCADA software shall be integrated such that an alarm acknowledged on one operator workstation will automatically appear as acknowledged on the other systems. ֎ The SCADA software shall provide alarms viewing and processing as follows: (a) A standard alarm page with the facility for scrolling alarms up, (b) Down the page and for acknowledgment of individual alarms. (c) Multiple levels of alarm priority or category. (d) Colour coding of various alarm priorities or category. (e) Capability of audio interaction configurable for each alarm by category .֎ SCADA Software shall provide the following information for each alarm as it appears on an alarm display page: (a) Alarm Tag Name, (b) Alarm Description, (c) Value of the Variable, (d) Trip/set point, (e) Alarm Status - Disabled, Acknowledged, Unacknowledged, (f) Alarm Category (if applicable), (g) Alarm Priority (if applicable), (h) Time & Date in International Formats, (i) Privilege (if applicable), (j) Operator Comments (if applicable), ֎ The capability to display each alarm category or alarm priority in a different colour (including flashing colours) dependent on whether the alarm is Active Unacknowledged, Active Acknowledged, Acknowledged Cleared, Unacknowledged Cleared or Disabled. ֎ The capability to disable alarms on an individual basis, by page or by alarm category or all alarms. ֎ The capability to automatically display any graphic display when an alarm occurs or to dynamically change the appearance of any graphical object based on whether an alarm is On, Off, Acknowledged, Communications Error, and Disabled etc.o The SCADA software shall monitor analog and digital variables and calculated conditions and determine if a variable is in an alarm condition.

֎ For each Analog variable, the SCADA database software shall provide the ability to process an alarm for each of the following conditions: - (i). Variable LOW-LOW, (ii) Variable LOW, (iii) Variable HI, (iv) Variable HI-HI, (v) Rate of Change, (vi) Bad input from I/O, (vii) Alarm disable, (viii) Dead band, (ix) Real time synchronization error 10 sec , ֎ For each Digital variable, an alarm for each of the following conditions shall be assignable:, (i) Variable ON,, (ii) Variable OFF ֎ The Customization of SCADA system shall be done by the supplier as per engineer – in -charge inputs at site, which is a continuous activity till the end of comprehensive warrant & operation & Maintenance period. ֎ The alarms shall be categorized as Critical, High, Medium & Low category based on which alarm priority shall be set in SCADA system. ֎ The following minimum alarms/events shall be configured in SCADA system by the supplier apart from any other alarms to be configured during customization of SCADA software. Alarm/Event Alarm /Event Description, Power Supply Faults Mains power Off, Trip/ Overload, battery Low, DG Set ON, solar power On etc. Instruments Hi, Hi- Hi, Lo, Lo-Lo, Rate of change, communication error, Transmitter Failure, Gate Open/Close/Stop/ Intermediate, over torqueLocal Control System Remote/Local mode, Auto/Manual mode, Electrical parameter alarms (Voltage, current, Power Factor etc.), communication loss/ signal loss, VFD Failure, Cooling Fan failure, Delay of more than a specified time in execution of Command, Hoist Motor failures, Over torque, software error etc. Main PLC The main controller should be intelligent enough so as to detect: (i) Input signal loss, (ii) Loss of power, (iii) Internal failure (limited) (iv) CPU failure, Common Events Battery discharging, UPS Stopped, Motor Started, Ambient Temperature High, flood alarm (yellow, orange red), Lake / Pond Level decreasing, Inaccuracy in timing due to communication latency, operator log alarm etc.

Equipment Arrangement is Integrated Command Control Center/Master SCADA Control Center 1. Computer Server – 1 No, 2. Monitor, Keyboard and Mouse – 1 Set, 3. Computer Nodes – 4 Nos, 4. SCADA Engineering Station – 1 No, 5. Printer – A4 Color – 1 No, 6. L2 Managed Switch – 1 No, 7. Firewall/UTM – 1 No, 8. Router – 1 No, 9. UPS 10KVA – 1 No, 10. 42U Rack – 1 No, 11. Broadband Internet with Static IP – 100 Mbps – 1 Service, 12. LED Videowall – 1 No, 13. Windows Server Latest License – 1 No, 14. Database License – 1 No. Decision Support System Software: A Decision Support System (DSS) for river-fed reservoirs or dams is a complex system that integrates various components to support decision-making, optimize operations, and ensure safety. Below should be the key functionalities of DSS Software. 1. DAS Module - Data Acquisition Module , 2. SCADA Module 3. Decision Support Module 4. Data Management and Analytics Module 5. User Interface and Visualization Module 6. Communication and Integration Module 7. EAP Module – Emergency Management and Response Module The DAS Module should collect the data from the sub control/slave PLC’s and other third-party sources for water level, tide level, inflow, outflow and other relevant parameters. The DSS Module should collect the data from SCADA Sub Control for real time monitoring and control of reservoir gates and electric motors.The Decision Support Module should make use of algorithms optimize reservoir operations, such as gate openings, water releases, and power generation schedules. The Decision Support Module should assist Evaluation of different operational scenarios to assess the impact of various strategies on water supply, flood risk, and environmental flow requirements. The Decision Support Module should use multi criteria decision analysis for Balancing conflicting objectives such as maximizing water storage, minimizing flood risks, and ensuring ecological sustainability.

The Data Management module must store historical data for all monitored parameters, enabling trend analysis, reporting, and long-term planning. The UI module should visually represent the key metrics, trends, and alerts for reservoir operators and decision-makers. Automated alerts for critical conditions like high inflow, potential flood risks, or equipment malfunctions should be provided to engineer in charge. The DSS should support generation of reports for regulatory compliance, performance assessment, and stakeholder communication. The SCADA module implements automated gate control, motor operation, and other processes based on real-time data and pre defined reservoir operation procedures. The EAP Module should be designed to alert emergency situations like floods. Integration of the DSS with the dam's Emergency Action Plan (EAP) to automate or guide response actions during emergencies should be possible. An Interface with public alert systems to issue warnings to downstream communities in case of potential flooding or other hazards should be provided. The data from the RTDAS system installed by TN CRA should be integrated with the DSS of TN WRD , The gate position data generated by the gate position sensors installed under this project, should be shared to the TN CRA installed RTDAS System. , : The intended DSS should integrate data from third party sources such as CWC, IMD, RTDAS-TN CRA, RTDAS - TN Groundwater Circle, RTDAS-JICA and RTDAS installed by IIT Madras by developing/providing proper API’s. Any Cable / Wiring work the external protoction arrangements should be ensured Complete complying with standard specification and as directed by engineer in charge. ( As per Quotation Rate )

Supply, Installation, Commissioning, of Server, Work Stations, UPS, Printer, Network equipment and accessiories, with internet connection for Integrated command control center as per Technical specification. Managed Switch Technical Specifications Operating Temperature: ֎ to 60 Deg C, Switch Type: L2 Manageable Switch, Ports: 24 Ports; 1 Console Port, Interfaces: 10/100/1000 Mbps RJ-45 Ports Supported Protocols: Telnet, HTTP, HTTPS, TFTP, Ethernet/IP, SNMP v1,v2,v3, IGMP, Protection: IP20, Supply Voltage: 24 VDC COMPUTER SERVER (1 no’s RACK SERVER) • Robust, long-term available Rack server for Master SCADA Control Center. • Form Factor: 1U/2U Rack Mounted or equivalent Server mounting. • Dust protection through filter fan with, • Chipset: scalable by 2 socket on the chassis., • Processor: Latest 3rd/4th Gen Intel Xeon 2.4(3.4) GHz and above Processor with minimum 8 Cores, 16Mb cache or better. • DIMM Memory: 32GB RDIMM, DDR4 2666 MT/s, Dual Rank • RAID: RAID 0,1,5 for HDDs and SSDs Software RAID controller. • Hard Drive 4 no’s – 600 GB x 4 SSD • Network Adapter: Two Port Ethernet 1GbE BASE-T Adapter • RS485, RJ 45 may be required. • Power Supply: Power Supply (1+1 redundancy), 600-800W • Electrical Supply: 220V AC and supply from AC distribution • Connecting Devices: Keyboard, Optical Mouse, • Monitor (23” TFT) • Software: Windows Server® latest version/higher compatible with Central Monitoring Software.

• Accessories: Power Cord Rack Rail with cable management system. Standard Fan Cold Swap 2U, V2 x5 • High availability support service from manufacturer. • Database: Standard RDBMS • OEM Support: Support of Next Business Day Onsite Service, 36 Month(s) COMPUTER NODES: • Form Factor: Desktop/Laptop • Processor: 12th Generation Intel® Core™ i5 processor or better (better than 4 -Core, 16M Cache, 2.5GHz to 4.4GHz) • RAM: 8GB, 8Gx1, DDR4, 2933MHz • Hard Drive 512 GB M.2 Solid State Drive • Video Card • Intel® UHD Graphics card with shared graphics memory • Network Adapter: Intel Gigabit Ethernet 1GbE NIC PCIe Card • Power Supply: 180 W internal Power Supply Unit (PSU) • Devices: Keyboard, Mouse, 22” monitor minimum • Software: Windows 11 (64-bit) English with latest MS office software & firewall system, with Good antivirus etc. • Accessories: Power Cord • Internet Connectivity • Intel® Gigabit Ethernet NIC (1Gbps) PCIe Card (Full Height) .,,Any Cable / Wiring work the external protoction arrangements should be ensured Complete complying with standard specification and as directed by engineer in charge. ( As per Quotation Rate )

Supply, Installation, Commissioning of LED display wall as per technical Specifications etc., as per Technical specification Complete complying with standard specification and as directed by engineer in charge. (Master SCADA control room at Poondi and Integrated command control center at Chepauk) LED Video Wall: • Size 32 feet X 6.6 feet or suitable , • Panel: IPS • Resolution:1920 X 1080 FHD • Brightness: 500 NITS • Viewing Angle: 178 X 178 • Response Time: 8ms • Contrast Ratio: 1200:1 • Colour GAMUT: NTSE 72% • Colour Depth: 10 Bit (1.07 Billion Colours) • Operation Hours: 24/7 • Connectivity: HDMI, Audio, USB, RS 232C, RJ 45, IR in, DP Audio Out • Power AC: 100 to 240V 50/60Hz; 130/150W • Should support 12 output splicing mode. The work station required for ICCC PC s to be provided . Any Cable / Wiring work the external protoction arrangements should be ensured Complete complying with standard specification and as directed by engineer in charge. ( As per Quotation Rate )

Five Years Operation and Maintenance of the complete Installation, including spares, bandwidth charges, preventive, corrective,operator, software upgrades, modification, manpower, communication cost for 5 years.This covers the field installations and all MSC and ICC equipment’s on a comprehensive Annual Maintenance Contract including Operation and Maintenance. Rectification of defects if any in the field stations, technical up- gradation of the field and software systems with newer versions. Maintenance of Power Supply (solar), Battery, Remote station Internet bills, providing for (1) new set of Batteries, maintenance of the existing centralized software, Maintenance of the Security shed, etc including deploying Technical manpower for ensuring continuous operations. The following Operations and Maintenance Work are considered under the Annual Maintenance Program. A. Preventive and Scheduled maintenance as per manufacturer’s manual of the flow meters. B. Keep the batteries charged and in good condition. Provide new set of batteries after 3 years. C. Pay monthly GSM/GPRS and VSAT charges for Telemetry. D. Upkeeping of the security shed in the remote locations, cleaning inside and outside surrounding on daily basis, including clipping the growth in immediate surroundings.Poondi , Chembrambakkam , Redhills and Chepauk (all 4 sites) Any Cable / Wiring work the external protoction arrangements should be ensured, Complete complying with standard specification and as directed by engineer in charge. ( As per Quotation Rate )

GST 18 % in Figures