Repairs And Maintenance Of External Elect Supply Water Supply And Misc Items At Otm And Cgra Complex Paradip Under Ge I Cg Bhubaneswar Repairs And Maint Of External Elect Supply Water Supply , m & l earthing complete with gi earth plate electrode 60cmx60cmx6 mm thick buried directly in ground ( earth pit not less than 2 . 25 mtrs deep below ground level ) with top edge of the plate not less than 1 . 5 mtr below normal ground level , connecting to galvanized earth strip 32 x 6 mm as earthing conductor by means of bolts , nuts , check nuts and washers of gi and all as shown in electrical plate no . 3 of ssr part i and including testing reinstance on completion all as specified locations complete all as specified and directed . note: the above quoted rate shall include cost of main earthing lead of 32 x 6mm gi earth strip , charcoal , salt , excavation and earth work in any type of soil returning , filling & removal ci cover , funnel with 20mm dia light grade gi water pipe including gi protection pipe 40mm dia light grade for earth strip , pcc ( 1:3:6 ) pit using 20 mm graded stone aggregate etc . , taking down the ht vacuum circuit breaker of any make , capacity from 400-630 amps , 11 kv , 350 mva for servicing , repairs and re-assembling complete comprising of the following ( ref 2 . 01 to 2 . 07 notes ) including testing and commissioning complete all as specified and directed . ( a ) dismantling the vcb from the enclosure consisting of vacuum interrupter assembly , socket contacts , checking the serviceability of all parts , cleaning , alignment of closing/opening mechanisms and re-assembling the unit complete . ( b ) cleaning the external surface of bushings with crc/ tri-chloro-ethylene to remove the accumulation of carbon or any other deposits . ( c ) checking the vacuum interrupter assembly and contacts and ensure the alignment of contacts . ( d ) dismantling the spring charging mechanism of the vcb , checking the operations of the closing/tripping through closing/tripping coils electrically as well as manual charging including cleaning re-adjusting worn out parts etc . ( e ) checking the condition of the spring charging motor along with gear box including servicing to the motor commutator bushes , lubrication of bearing surfaces etc . ( f ) checking the ratchet wheel assembly , driving and charging parts and adjust . ( g ) inspecting all bolts , nuts , pins and ensure collar pins are in place and they are tight and opened properly . ( h ) applying petrolium jelly to moving contact arms and doctor beck solution to insulated parts moving arms of breaker and reassembling the unit , decarbonising/ cleaning and painting complete ht panels board of size 2m x 0 . 6m x 1 . 6m , 11 kv cubicle type , consists of bus bar chamber , circuit chamber and metering chambers by opening the spout/bus covers , inspecting the bus bar joints , cleaning of bus bars , checking the bus bar spouts and circuit spouts for any flashovers/ cracks , applying anti - track busbar insulation tape to the bus bars and applying anti tracking paint red solution for insulating to spouts having moderate tracking , applying ht insulated red compound/ monoplast compound at the bus bar joints after tightening of joints , cleaning of bus bar insulators and bus bars with crc , painting panel ( both inside and outside ) with one coat with synthetic enamel paint and ensure proper decarbonisation and re-assembling complete all as specified and as directed . note :- ( i ) cost of additional hardware like bolts , nuts , washers and spring washers , petroleum jelly etc , to put the breaker in serviceable condition is deemed to be included in the item rate quoted for the repairs . ( ii ) spare parts if any replaced , shall be measured and paid separately as supply only as in item no -4 to item no 5 ( iii ) old unserviceable spare parts removed from the breakers shall be accounted for under schedule of credit . , supply only strip space heaters with thermostat switch of rating 230v , 80w with necessary wiring with 1 . 5sq . mm copper conductor wire , electrical connections with suitable lugs and proper dressing complete including replacement of necessary bolts and nuts washers etc . complete all as specified and directed . ( make : apt/l&t /girishego or similar in make as mentioned in ps ) . , supply only epoxy resin circuit spout bushing assembly ( set of three , ryb ) for 630 amps with insulation resistance fit for 11kv complete all as specified and directed . ( make areva/ schneider/abb/apt or similar in make as mentioned in ps ) . , taking out unserviceable hrc/hbc fuse and supply and fix new hrc /hbc fuse 2-32 amps cylindrical fuse link complete all as specified and directed . ( make -l&t/abb or similar in make as mentioned in ps ) , material and labour for filtration of transformer oil of transformer 500 kva & 200 kva with ultra high vacuum filteration machine and checking dielectric strength ( bdv ) , dielectric dissipation factor , neutralizing value ( total activity ) , upto 60 kv with 2 . 5 mm gap sludge content , flush point of transformer oil from standard testing laboratory all as specified . refilling the transformer oil on line in the shell of transformer after carrying out filteration and heating up oil to achive reqd dielectric strength and submitting the test result before and after filteration of oil in presence of engr- in- charge on proper proforma duly signed complete all as specified and directed . , material and labour for painting to 200 kva/500 kva transformer scrapping and removing oil paint and applying 01 coats of synthetic enamel paint by taking due care for ht/lt side supply complete all as specified and directed . , supply and fill on line ( heated ) transformer oil having dielectric strength upto 60 kv with 2 . 5 mm gap complete all as specified and directed . ( make-castrol/indian oil/hpcl/transol ) , supply & fix synthetic mat of size 2m x 1m x 19 mm thick including taking down old unseveciable synthetic mat complete all as specified and directed . , suppy and fix in repairs of breather with silica gel crystal ( 1 kg ) type complete all as specified and directed . , material and labour for carrying out b check will be carried out by oem or kirloskar services only and maintenance for cummins make 100 kva dg set including replacement of lo filter , super lo bypass filter , fuel filter element , air filter , o rings , gaskets , screws , etc and draining out old engine oil from oil chamber and refill company recomanded new engine oil removing depostited material including applying grease , crc in moving parts and draining out water from radiator assembly and refill new after mixing with coolant ( approx 6 ltrs ) including tightening all inlet and outlet connections and replacing minor items such as hose clamps , screws , washers etc including replace space heater ( 4h . 166 . 16 . 0 . 0 ) in alternator , relay board part no- ( 4h . 166 . 15 . 00 ) complete all as specified and directed . , s&f battery , low maintenance dry type of capacity 12 volts 150 ah including removal of existing unserviceable one and keeping it in self custody which becomes contractors property after the schedule of credit recovery complete all as specified and directed . make- exide/ amaron or similar make as mentioned in ps . , material and labour for carrying out b check including maintence of dg set will be carried out by oem or kirloskar only and maintenance for make jackson 20kva dg set including replacement of lo filter , lo bypass filter , fuel filter element , air filter , hezazone screw , copper washer , o rings , gaskets , screws etc and draining out old engine oil from oil chamber and refill company recomanded new engine oil , removing deposited material including appling grease
