8192 REPAIR/ MAINTENANCE OF VENTILATION SYSTEM TRAYS AND ALLIED ITEMS AT VARIOUS JETTIES OF NAVAL DOCKYARD UNDER GE (NW) KUNJALI.

Amount

Labour only for repair maintenance of ventilation blowers/industrial exhaust fan and control panel twice in a month incl. cleaning of blower fan, supply and return air duct and drain tap, cleaning & servicing of dampers linkages for free operation, adjustment of belt tension/replacement of same, if required oiling and greasing of blower motor testing functioning of thermostate and sensors complete. Checking/Testing functioning of installation, cleaning of pre filters with water without damaging including repair of worn out connection cable lugs & connectors, replacement of unserviceable electrical accessories of LT panel complete all as directed. Note :- The Electrical accessories i.e voltmeter, amperemeter, single phase preventor, contactors, relays, timers, MCBs and MCCBs, cables as required are measured and paid separately under relavant items here-in-after.

M&L for dismantling electric motor of any make ,3 phase 415V after disconnecting the electric connection of ventillation blower/heavy duty exhaust fan of following capacity, opening the motor for rewinding using super enamelled copper wire of suitable gauge to match with the existing winding wire as per manufacturer's design including varnishing & baking, drying and re-assembling the motor, refixing its original location with proper alignment, making electric connection and testing complete including transporting to workshop for rewinding and back to installation after completion of rewinding work complete all as directed.

Supply laying and testing in cable XLPE insulated screened PVC bedded galvanised steel strip or wire armoured electric power cable (heavy duty) with aluminium conductor 1100 volts grade cross sectional area 16 Sqmm 4.0 core laid on wall / ceiling / duct all as directed including taking down old unserviceable cable complete all as directed. Note : 1. The cost of Al thimbles/lugs and cable gland etc is incl in quoted rate and no extra payment will be made for it.

All as per Item No. 03 here in before but 35 sq mm 3.5 core

All as per Item No. 03 here in before but 50 sq mm 3.5 core

S&F in repair for Cable trays size of 300mmx105 mm manufactured from steel wires, welded together and bent into final shape.All cable trays, except the 30x50, shall be manufactured with a longitudinal ‘T-welded’ safety edge.Trays shall be constructed with a 50 mm x 100 mm mesh configuration. All Accessories including couplers (CE25/CE30 screw-based system combination) mounting accessories (Mechanically tested & supplied by cable tray manufacturer must be used) are required of same finish as per site requirement.Electro zinc plated after manufacture in accordance with the EN standard 12 329: at least 550 h of SST. All trays shall be arranged and positioned on the site itself in accordance with the manufacturer's instructions.The deflection of the wire cable tray must be no more than 1/200th of the distance between two supports and tested in accordance with the standard IEC 61537. Assemblies with specific fire-resistant properties must have an E30-E90 certificate issued by an approved laboratory in accordance with the tests described in the standard DIN 4102-12. The wire cable tray short-circuit resistance must be tested by an independent laboratory. For the purpose of assembling the various wire cable tray, only fast coupling systems or screw-based (CE25/CE30) systems must be used. These must be designed, mechanically tested and supplied by the wire cable tray manufacturer.The electrical resistance of the joints must not exceed 50 mΩ and must be tested in accordance with the procedure described in the standard IEC 61537.Rod dia must be from 3.9mm to 5.9mm for different sizes. Make - Legrand.

S&F in repair Cable support frame Rectangular shape with made of MS hollow pipe with frame size of tray length 24 inch x 18 inch widthx16 inch height ,dia of MS hollow pipe 40 mm and thickness of MS pipe for frame 25 mm dia with welding ,finishing etc complete all as specified and directed . Note : The contractor will visit site for verify the size and shape of existing frame before quoting the rate.

Supply and fix in repair 3 phase electronic digital voltmeter class 1.0 as per existing size complete all as specified and directed .

Supply and fix in repair 3 phase electronic digital Ammeter class 1.0 as per existing size complete all as specified and directed .

S&F in repair of 3 phase Analogue type Voltmeter of range 0 to 500 V AC class 1 complete all as directed.

Supply and fix in repair timer with working pressure of 240 /415 Volt, 50Hz electronic Timer type ST-100 with mounting kit, timing 3-30 secs and also suitable for replacement of ET-100 complete all as directed.

S&F in repair CSXi model Digital soft starter in repair of unserviceable existing soft starter suitable for motor with 300% rated starting current 3 wire (Inline connection) or 6 wire (inside Delta Connection) with inbuilt bypass provision and including with all protections remains active during bypass operation of soft starter of essential ventilation air system blower motor capacity 37 KW complete all as specified.

S&F in repair CSXi model digital soft starter in repair of unserviceable existing soft starter suitable for motor with 300% rated starting current 3 wire (Inline connection) or 6 wire (inside Delta Connection) with inbuilt bypass provision and including with all protections remains active during bypass operation of soft starter of essential ventilation air system blower motor capacity 30 KW complete all as specified.

S&F in repair of digital soft starter and repair of unserviceable existing soft starter EMX3 RTD/ Ground Fault Expansion Card of motor soft starter of essential ventilation air system blower motor capacity 37 KW complete all as specified.

S&F in repair of digital soft starter and repair of unserviceable existing soft starter EMX3 I/O Expansion Card of motor soft starter of essential ventilation air system blower motor capacity 30 KW complete all as specified.

S&F in repair in repair of Poly -F plus PB classical V- belt size B178 for Air Blower, complete all as directed

S&F in repair in repair of V- belt size B168 for Air Blower complete all as directed

S&F in repair of V- belt size B158 for Air Blower complete all as directed.

S&F in repair Power contactor 2 NO + 2 NC , 3TS5022-0A,2-8K, 3 pole 440 volt, 105 Amps suitable for 55 KW motor .

Supply and fix in repair of unserviceable nylon mesh pre-filters Box/Flange type with efficiency of 90% down to 10 microns fabricated in size 610mm x 610mm x 50mm of Air Ventilation Plants .rooms No 01, 02, 03, 04, 05, 06, 07, 08 and 09 of SBW, CBW and of UG Sub Stations as specified and directed.

S &F in repair Over Load Relay suitable for any capacity of starter electric panel

S&F in repair Single phase preventer suitable for any capacity of electric starter panel

S &F in repair electric automatic star delta starter capacity suitable for 30/40 KW/ HP motor complete all as directed.

S &F in repair electric automatic star delta starter capacity suitable for 15/20 KW/ HP motor complete all as directed.

S &F in repair electric automatic star delta starter capacity suitable for 22/30 KW/ HP motor complete all as directed.

S &F in repair electric star delta starter contactor AC1, type ML-1.5 with auxiliary contactor 2NO+2NC and coil volt 220V complete all as directed.

Supply and fix in repair electric star delta starter AC1, type ML-2 with auxiliary contactor 2NO+2NC and coil , 220V ,50 Hz suitable capacity complete all as directed.

S &F in repair MCCB 800 Amp 4 Pole 50kA, Thermal magnetic protection with O/L,S/C protection, confirming to IS/IEC60947-2& IEC 60947-2 including spreader Terminal, internal and external accessories complete all as specified

S &F in repair MCCB 400 Amp 4 Pole 36kA, Thermal magnetic protection , with O/L,S/C protection confirming to IS/IEC60947-2& IEC 60947-2 including spreader Terminal, internal and external accessories complete all as specified

S &F in repair MCCB 250 Amp 4Pole 36kA, Thermal magnetic protection , with O/L,S/C protection, confirming to IS/IEC60947-2& IEC 60947-2 including spreader Terminal, internal and external accessories complete all as specified

S &F in repair MCCB 160 Amp 3Pole 36kA, Thermal magnetic protection , with O/L,S/C protection,confirming to IS/IEC60947-2& IEC 60947-2 including spreader Terminal, internal and external accessories complete all as specified

S &F in repair MCCB 125 Amp 3 Pole, 25kA,Thermal magnetic protection, with O/L,S/C protection,confirming to IS/IEC60947-2& IEC 60947-2 including spreader Terminal, internal and external accessories complete all as specified

S &F in repair MCCB 100 Amp 3 Pole 25kA, Thermal magnetic protection , with O/L,S/C protection,confirming to IS/IEC60947-2& IEC 60947-2 including spreader Terminal, internal and external accessories complete all as specified

S &F in repair MCCB 63 Amp 16kA, 3 Pole hermal magnetic protection , with O/L,S/C protection,confirming to IS/IEC60947-2& IEC 60947-2 including spreader Terminal, internal and external accessories complete all as specified.

S &F in repair pedestal bearings set of two nos (front and rear) bearing size double row type, cylindrical with bearing cat No. NN30211 make SKF of ventilation air plant complete all as specified and directed.

S &F in repair pedestal bearings set of two nos (front and rear) bearing size double row type, cylindrical with bearing cat No. NN30212 make SKF of ventilation air plant complete all as specified and directed.

S &F in repair pedestal bearings set of two nos (front and rear) bearing size double row type, cylindrical with bearing cat No. NN30213 make SKF of ventilation air plant complete all as specified and directed.

S &F in repair pedestal bearings set of two nos (front and rear) bearing size double row type, cylindrical with bearing cat No. NN30216 make SKF of ventilation air plant complete all as specified and directed.

S &F in repair pedestal bearings set of two nos (front and rear) bearing size double row type, cylindrical with bearing cat No. NN30217 make SKF of ventilation air plant complete all as specified and directed.

S &F in repair pedestal bearings set of two nos (front and rear) bearing size double row type, cylindrical with bearing cat No. NN30218 make SKF of ventilation air plant complete all as specified and directed.

S &F in repair pedestal bearings set of two nos (front and rear) bearing size double row type, cylindrical with bearing cat No. NN30219 make SKF of ventilation air plant complete all as specified and directed.

Material & Labour for repair of unserviceable ventilation blower, dismantling after disconnecting all electric connection and opening inspection of unserviceable blower and transporting to workshop for repairing work of blower shaft and blower drum including replacement of broken/damaged blower with new in existing size i.e blower diameter 2340mm, width 2060mm and length 2760mm, Nos of blower fins 12, remetalling of shaft with electric welding, grinding, finishing, polishing and matching with pedestal bearings and blower drum shaft hollow diameter 80mm including replacement of pedestal bearings two nos front and rear of size NN30316 of SKF including transporting back to installation location and refixing, alignment, re-electric connection testing on load after completion of repair work complete all as specified and directed.

Material & Labour for repairing of unserviceable ventilation blower dismantling after disconnecting all electric connection and opening inspection of unserviceable blower and transporting to workshop for repairing work of blower shaft and blower drum including replacement of broken/damaged blower with new in existing size i.e blower diameter 1630mm, width 1260mm and length 1010mm, Nos of blower fins 12, remetalling of shaft with electric welding, grinding, finishing, polishing and matching with pedestal bearings and blower drum shaft hollow diameter 58mm including replacement of pedestal bearings two nos front and rear of size NN30312 of SKF including transporting back to installation location and refixing, alignment, re-electric connection testing on load after completion of repair work complete

Material & Labour for repairing of unserviceable ventilation blower dismantling after disconnecting all electric connection and opening inspection of unserviceable blower and transporting to workshop for repairing work of blower shaft and blower drum including replacement of broken/damaged blower with new in existing size i.e blower diameter, 2650mm, width 2180mm and length 1830mm, Nos of blower fins 12, remetalling of shaft with electric welding, grinding, finishing, polishing and matching with pedestal bearings and blower drum shaft hollow diameter 91mm including replacement of pedestal bearings two nos front and rear of size NN30318 of SKF including transporting back to installation location and refixing, alignment, re-electric connection testing on load after completion of repair work complete all as specified and directed.

Material & Labour for painting of ventilation blowers/industrial exhaust fan and control panel with super enamelled paint after scraping with wire brush and emery paper of old painting layer incl. cleaning of blower fan and drain tap, cleaning & servicing of dampers linkages for free operation of ventilation air plant complete all as specified and directed.

S &F in replacement heavy duty metal exhaust fan including taking down old unserviceable exhaust fans of followings sizes . Note : (i) Exhaust fan will be deposited in MES store

300mm to 375mm

380mm to 440mm

450mm to 500mm

600mm to 750mm

S&F in repair for Aux contactor 4No base block Add -ON ,DC control std coil voltage 110V DC ,10A complete all as specified and directed.

S&F in repair for Aux contactor 3NO+1NC ,coil voltage 240V AC ,complete all as specified and directed.

S&F in repair for Relay as per existing size ,Model no X52X/K52 ,240V AC ,complete all as specified and directed.

S&F in repair/replacement of main contactor suitable for following capacity of motors including taking down old one :-

Contactor MNX 80 3 pole, 415V, 50 Hz suitable capacity motor complete all as specified and directed.

Contactor MNX 70, 3 pole, 415V, 50 Hz suitable capacity motor complete all as specified and directed.

Contactor MNX 50, 3 pole, 415V, 50 Hz suitable capacity motor complete all as specified and directed.

Supply only in repair of Ball bearings No.7320B make SKF complete all as specified and directed.

Supply only in repair of bearing No. 6314 make SKF complete all as specified and directed.

Supply only in repair of bearing No. 6310-2Z make SKF complete all as specified and directed.

Supply and Laying single core 185 Sqmm testing and commissioning PVC insulated and FRLSH PVC Round Sheathed,armoured Copper Conductor (flexible) industrial cable, 1100 Volt, conforming to IS 694 laid in trenches/ duct/ fixed on wall complete including connecting properly by means of thimble and taking out damaged unserviceable cable .complete all as specified and directed.

Supply and lay in repair XLPE insulated, armoured heavy duty electric cable with aluminium conductor, 1100 volts grade, cross-sectional area 300sqmm 3.5core. laid in trench/ duct / along pole/wall etc including making connection complete all as specified and directed. Note : 1. The cost of thimbles/lugs and cable gland etc is incl in quoted rate and no extra payment will be made for it.

Supply and lay in repair XLPE insulated, armoured heavy duty electric cable with aluminium conductor, 1100 volts grade, cross-sectional area 95sqmm 3.5core. laid in trench/ duct / along pole/wall etc including making connection complete all as specified and directed. Note : 1. The cost of thimbles/lugs and cable gland etc is incl in quoted rate and no extra payment will be made for it.

Excavation in trenches n exc1.5m wide and n exc in depth for laying of cables and getting out in loose/soft soil compete all as directed.

Returing filling in including spreading, levelling watering and well ramming in layers not exc 25cm compete all as directed.

Removing excavated material n exc 50cm and deposting where directed at a level n exc 1.5m above the starting point compete all as directed.

Material and labour for sand filling in trenches fine dry sand as sand cushioning to cable 8 cm before laying of cables and 15 cm after laying cable which shall be punned down to 10 cm complete all as specified and directed. (Note : Only punned down thickness shall be measured and paid)

M&L for un-reinforced,precast concrete cable cover of size 250x150x40mm class LV type -I for cable protection all as specified and directed

S&F GI tubing light grade 50mm dia with all fittings laid in trenches/fixed on wall/ceiling including dismantling of old pipe etc all as specified and directed.

Supply and Laying 4 core 16 Sqmm testing and commissioning PVC insulated and PVC Round Sheathed, Copper Conductor (flexible) industrial cable, 1100 Volt, conforming to IS 694 laid in trenches, passing through pipes, fixed on wall complete including connecting properly by means of thimble and taking out damaged unserviceable cable of the following sizes.

Shree Ayyappa Engineering (BID ID -3356652)

TETRI ENTERPRISES (BID ID -3354371)

pk Enterprises (BID ID -3362602)

sapana enterprises (BID ID -3363030)