Military Engineer Services Tender

Design, supply, installation, testing & commissioning of Central AC Plant including water pump sets cooling towers, hot water generators, ducting and electrical connection suitable for 3 phase AC supply Chilled water system 2 x 17 TR or nearest higher available capacity working and 1 x 17 TR or nearest higher available capacity standby for SES Bldg and other items as required for satisfactory performance of the plant complete in all respect and all as specified in respective drawings to achieve the inside designed conditions as per Annexure 'I' enclosed here-in-after. Note 1 :- (a) Contractor/ bidder are advised to visit the site to check the desired inside design conditions carefuly and submit the bid only after ascertaining the capacity of the AC plant required to achieve the inside design conditions. (b) Contractor/ bidder should submit complete design for the Central AC plant comprising of heat load calculations, working drawings of complete AC plant supported with design/calculations of each component duly vetted by IIT/NIT within two months of the date of commencement of work through GE for the approval of HQ CE (AF) Shillong Zone before execution of the work. (c) Contractor/bidder will be responsible for performance guarantee of complete AC plant to achieve the inside design conditions round the clock throughout the year with overall COP of the system not less than 3. (d) Design, Supply, installation, testing and commissioning of Chilled water Central Airconditioning system shall be undertaken through Manufacturers/Specialist Firms. Note 2 :- Rates quoted by the contractor shall be complete finished work including cost of all labour, material, scaffolding, finishing as required with tools, plants, cartage, lift, taxes, tollage, octroi, royalties etc. All works shall be executed as per drawings and instructions of Site-in-charge and shall be include the supply and installation at site of all the equipment, ancillary materials as specified and all such items what-so-ever which may be required to fulfil the intent and purpose as laid down in the drawings. All materials shall be duly approved by Site-in-Charge before incorporating in the actual work. Note 3 :- Rates quoted by the contractor shall deemed to be including for Manning and Operation of AC Plant during the period of seasonal tests.

Supply installation and testing of outdoor feeder pillar box factory made, IP-66 protection of size 1500 mm (h) x 1200 mm (w) x 600 mm (d), made out of CRCA sheet of 3.15 mm thick with powder coating paint of approved shade including 350 Amps capacity TPN aluminium bus bars, bottom base of MS angle section not less than 40mm x 40 mm x 5mm thick and complete internal wiring including all switch gears having (i) 250 A, 4 pole MCCB 36 KA - 01 No as a incoming and (i) 63 A, 4 pole MCCB 25 KA - 05 Nos (ii) Digital ammeter (0-250A) - 1No (iii) Digital voltmeter (0-500V) - 1No (iv) Amp selector switch -1No (v) Volt Selector switch - 3Nos (vi) 250/5A Current Transformer - 1No (vii) 2A HRC Fuse links with Fuses Bases for Control (viii) Led Indiacting Lamps - 3 Nos as outgoing complete all as specified as directed.

Supply installation and testing of indoor feeder pillar box factory made, IP-66 protection of size 800 mm (h) x 600 mm (w) x 500 mm (d), made out of CRCA sheet of 2.0 mm thick with powder coating paint of approved shade including 350 Amps capacity TPN aluminium bus bars, bottom base of MS angle section not less than 40mm x 40 mm x 5mm thick and complete internal wiring including all switch gears having (i) 250 A, 4 pole MCCB 36 KA - 01 No as a incoming and (i) 63 A, 4 pole MCCB 25 KA - 04 Nos (ii) Digital ammeter (0-250A) - 1No (iii) Digital voltmeter (0-500V) - 1No (iv) Amp selector switch -1No (v) Volt Selector switch - 3Nos (vi) 250/5A Current Transformer - 1No (vii) 2A HRC Fuse links with Fuses Bases for Control (viii) Led Indicating Lamps - 3 Nos as outgoing complete all as specified as directed.

Materials & Labour for point wiring complete with 4.0 sqmm PVC insulated unsheathed multistranded copper conductor FRLS cable 1100 volts grade, single core, drawn through and including stove enamelled steel conduit not less than 20mm dia with all flame proof accessories such as junction box, MS coupling, unions branch, reducers, elbow, sealing conduit etc. including 4.00 sqmm PVC insulated unsheathed multistranded copper conductor FRLS Cable (green colour), single core earth continuity conductor connected to common earth dolly for 3/5 pin 6/16 Amps socket outlet on independent board complete all as specified and as directed.

Supply and fix flame proof switch socket & plug combination in LM6 cable termination box in LM6, 16 Amps, 250 volts, 2p+earth complete all as specified and as directed.

Supply, installation, testing and commissioning of maintenance free (four spikes) chemical earthing system using 17.2mm dia, 3000mm long (drawn vertically) high tensile low carbon steel circular rod, molecularly bonded with copper on outer surface (minimum copper bonding thickness of 250 microns) meeting the requirements of under writers laboratories (UL) 467-2007 or latest with 250mm long copper strips of size (50X3)mm, exothermally welded on top of electrode complete including augering (boring) 100-125mm dia hole as required for electrode in any type of soil and back filling with combination of two chemical compounds carbon based ground enhancing compound (GEC) compound (with minimum qty 35 Kg per electrode, however extra chemical if required to fill the hole around the rod, same shall be arranged by the contractror at his own cost and cost of the same is deemed to be included in the unit rate of this item) conforming to IEEE/BS standrads incl HDPE pit cover light weight made out of high quality polymer with lid made of HDG steel and U-clamp copper nut & bolt & gun metal body 1 No. per electrode required for joining all three electrodes complete all as specified and as directed. Note:- (i) The work of earthing shall be carried out by authorised trained rep of OEM. (ii) The acceptable earth resistance at earth busbar/ test point shall be as per users requirement as desired by Engr-in-Charge but it should be below 01 Ohm . (iii) The procedure mentioned here-in-before for one earth pit shall be repeated for other earth pits. (iv) Copper strip 20x3.15 mm required for joining these three electrodes in loop shall be measured and paid seperately . (v)The distance between two successive earth electrodes shall not be less than 3 metres.(vi) The rate quated shall also be included the following elements: (a) Complete earthwork including drilling holes for electrode.(b) Earhing electrode-03 only (c) Backfilling carbon based ground enhancing compound (GEC). (d) Pit cover light weight made out of high quality polymer with lid made of HDG steel. (e) Copper strip as earthing lead of size 50mmx3mm, 250 mm long only, beyond 250mm, other size shall be measured and paid for separately under respective item here -in-after. (f) All labour and T&P required including testing of earth network. (vii) Testing for earth resistance shall be carriedout in presence of JE and Engr-in-charge. (viii) Original purchase vouchers for copper rod and back fill compound and manufacturer test certificate of entire quantity shall be produced by the contractor before commencement on ground.

M&L for copper strip with saddles/ insulators for main earthing lead from test point equipments and fixed with wall/recess/chases or burried on ground or any indicated position of size 20 x 3.15 mm including brazing of joints complete all as specified as directed. (Note:-Earth work and excavation shall be measured and paid separately)

Material and labour for earthing complete with galvanized steel earth plate electrode of size 600 mm x 600 mm x 6 mm thick buried directly in ground vertically to a depth not less than 2.25 m below ground level with top edge of plate not less than 1.5 m below normal ground level connected to galvanized earth strip of size 32 x 6 mm as earthing lead by means of nut, bolts and washers made out of galvanised iron and 40 mm bore GI pipe "light grade" for protection of earth lead and connected to control board or main switch or as directed by Eng-in-Charge including earthing pit in PCC (1:3:6) type C-1, pre-cast RCC (1:1.5:3) cover slab of size 600 x 600 x 100 mm reinforced with 8 mm dia TMT bars @ 150 mm c/c and one handle made out of 8 mm dia round bar, 20 mm bore GI pipe medium grade for watering, funnels, wire mesh and provided charcoal and common salt in alternate layers of 15 cm thick including necessary earth work complete all as shown in electrical plate No 3 of SSR Part I and testing complete all as specified and as directed. Note :- (i) The earthing pit should be provided with proper earth pit and pit cover. Pit cover should be painted with synthetic enamel paint of approved colour and pit number to be marked on GI plate above 45 cm from GL as per colour code followed in AF Station. (ii) If the desired earth resistance is not achieved during testing as per IS the complete earthing shall be carried out by the contractor at his own cost and no extra claim shall be admissible.

Material and labour for galvanised iron Strip of size (32 x 6)mm for interlinking between earth electrodes and for continuity fixed with wall/ recess/ chases or buried in ground or any indicated position incl brazing of joints complete all as specified and as directed.

M&L for test point terminal block made of gun metal or phosphorus bronze size (75x75x25)mm drilled and screwed including 3 Nos 8mm dia 25mm long hex-head screw complete all as specified and directed.

Material and labour for Air termination, single pointed, copper rod 12mm dia and 300mm long complete all as specified and directed

Supply and fixing 40 mm bore galvanized steel tubing, medium grade fixed to poles/Walls etc, for holding Air termination with coupling, complete all as specified and directed.

Excavation in trenches not exceeding 1.5 mtr wide and not exceeding 1.5 mtr in depth and getting out in soft /loose soil for laying of cable or simillar works complete all as directed and specified.

Returning, filling in, including spreading,levelling watering and well ramming in layers not exceeding 25 cm in soft/loose soil complete all as specified and as directed.

Removing above the starting point excavated soil to a distance not exceeding 50 mtr and depositing where directed at a level not exceeding 1.5 mtr above the starting point complete all as specified and as directed.

M&L for sand cushioning with coarse sand in trenches for protection of underground electric cable, spread to uniform 23 cm thickness and punned down gently to 18 cm complete all as directed. (Note: Compacted thickness will be measured and paid only).

Supply and laying old size sub class 'B' bricks well burnt, best quality locally available laid flat with width equal to length of the brick in trenches over sand cushioning for UG cable protection complete all as specified and directed.

Supply, laying, jointing and testing of XLPE insulated, PVC bedded, Galvanized steel strip or wire armoured underground heavy duty electric power cable with standard aluminium conductor 1100 volts grade cross sectional area 70 Sqmm 3.5 core, laid in trenches/ duct/ on pole including all necessary fixing arrangement such as lugs, glands end termination etc and taking out of old existing UG cable of any type and size complete all as specified and as directed. (Note :- Excavation, earth work, bricks & sand cushioning shall be measured & paid separately)

Sub main wiring with 2 runs (Phase & Neutral) of single core 6 Sqmm (Nominal area) stranded FRLS PVC insulated unsheathed copper conductor cable 1100 volts grade drawn through in and including rigid steel conduit of bore 20mm (ISI Marked) including 1 x 6 Sqmm (Nominal area) FRLS PVC insulated unsheathed stranded copper conductor green in colour for earth continuity conductor and connected to common earth dolly complete all as specified and as directed. Note: Two runs of 6 Sqmm cable and one run of 6 Sqmm earth continuity conductor including steel conduit shall be measured as one run length. NOTE. In case same item of work is repeated for separate Bldgs and the bidder quoted different rates, the lowest quoted rates will be applicable for the purpose of payment.