work contract for aoh of electrical equipment and auxiliaries of unit no . 5 , 210mw atps , mppgcl , chachai -1 generator ( a ) generator overhauling ( to be included with tg overhauling tender schedule ) ( b ) misc works in generator overhauling ( i ) cleaning / painting of bus duct pressurization unit. ( ii ) h2 purging after unit shutdown & h2 refilling before of unit light up. ( iii ) cleaning / painting of h2 drier ( iv ) cleaning / servicing of hydrogen coolers 2 transformers ( a ) general overhauling of ht transformers ( i ) generating transformer ( a ) cleaning / washing of transformers ( b ) painting of transformers ( c ) terminal tightness ( d ) inspection of seal of bushing, insulators, terminal bushings, etc ( e ) cleaning of gt cooler banks ( f ) overhauling of fan & pump motors ( ii ) station transformer ( a ) cleaning / washing of transformers ( b ) painting of transformers ( c ) terminal tightness ( d ) inspection of seal of bushing, insulators, terminal bushings, etc ( e ) overhauling of fan & pump motors ( iii ) inter-connecting transformer ( a ) cleaning / washing of transformers ( b ) painting of transformers ( c ) terminal tightness ( d ) inspection of seal of bushing, insulators, terminal bushings, etc ( e ) overhauling of fan & pump motors ( iv ) unit auxiliary transformer ( a ) cleaning / washing of transformers ( b ) painting of transformers ( c ) terminal tightness ( d ) inspection of seal of bushing, insulators, terminal bushings, etc ( e ) overhauling of fan & pump motors ( v ) misc. ht transformer ( construction / auto / distribution, etc ) ( a ) cleaning / washing of transformers ( b ) painting of transformers ( c ) terminal tightness ( d ) inspection of seal of bushing, insulators, terminal bushings, etc ( e ) overhauling of fan & pump motors ( vi ) neutral grounding panel ( gen., gt, st, uats ) cleaning / inspection / painting ( vii ) painting of transformer oil storage tank ( a ) transformer oil storage tank 6 kl capacity ( b ) transformer oil storage tank 18 kl capacity ( c ) transformer oil storage tank 22.5 kl capacity ( d ) transformer oil storage tank 28 kl capacity ( e ) transformer oil storage tank 45 kl capacity ( viii ) identification boards of transformers ( ix ) painting of transformer yard fencing & gate ( x ) transformer oil filter machine painting ( b ) general overhauling of lt transformers ( i ) lt dry type transformers ( a ) cleaning of transformers ( b ) painting of transformers ( c ) terminal tightness ( d ) inspection of seal of bushing, insulators, terminal bushings, etc ( ii ) lt oil filled transformers ( a ) cleaning / washing of transformers ( b ) painting of transformers ( c ) terminal tightness ( d ) inspection of seal of bushing, insulators, terminal bushings, etc ( iii ) excitation transformer ( a ) cleaning ( b ) painting ( c ) terminal tightness ( iv ) painting of lt transformer yard fencing gate 3 switchyard :- ( i ) breaker, isolators , earth switch, bay equipments cleaning & terminal tightness ( ii ) painting and ryb colour identification marking. ( a ) bay equipments along with structure: ct / pt / cvt / la ( b ) circuit breakers ( c ) marshalling box, mom box ( d ) earth switch ( e ) bus post insulators ( iii ) identification / caution board painting & letter writing. ( iv ) circuit breaker platform cleaning and painting 4 bus ducts : inspection, tightness, cleaning, painting and replacement of insulators & heaters ( if required ) ( i ) 21 / 15.75 kv gen bus duct ( ii ) 11 kv uat bus duct ( iii ) 6.6 kv st bus duct ( iv ) 6.6 kv uat bus duct ( v ) lt transformer bus duct 5 esp ( i ) ltmsb, acp buses & mcc ( cleaning , tightness & complete inspection of all buses ) ( ii ) cleaning, tightness work in ec panel ( field controller panel ) ( iii ) cleaning, tightness work in ec panel ( rapping controller panel ) ( iv ) cleaning & resistance checking of heaters, replacement of faulty esp hopper heaters ( a ) servicing / replacement of hopper heaters ( b ) servicing / replacement of shaft insulator heating elements ( c ) servicing / replacement of support insulator heating elements ( v ) general overhauling of : ( a ) pin insulator, support insulator & shaft insulators ( b ) tr set along with painting ( c ) rapping motors 6 ht switchgear panel ( 11 kv / 6.6 kv ) ( i ) bus cleaning , tightness & complete inspection of all buses. ( ii ) breaker cleaning, tightness & operation checking 7 415v lt swbd / mcc / acdb / dcdb switchgear panel ( i ) bus cleaning , tightness & complete inspection of all buses. ( ii ) breaker / module cleaning, tightness & operation checking. 8 bop switchgears panel ( i ) bus cleaning , tightness & complete inspection of all buses. ( ii ) breaker / module cleaning, tightness & operation checking. 8 bop local control panels / wall mounted panels ( i ) bus cleaning , tightness & complete inspection of all buses. ( ii ) breaker / module cleaning, tightness & operation checking. 9 power house lighting & power supply ( i ) cleaning , tightness & complete inspection of all lightning transformers & ldb ( ii ) painting of lighting transformer & ldb ( iii ) providing power supply as per site requirement & for other maintenance work bmd, tmd etc. ( iv ) overhauling of lighting panels ( a ) street light poles ( b ) various type of lps ( c ) painting & writing of nomenclatur of above. ( d ) security watch tower light ( v ) lighting circuits in tg, boiler, switchgear, wt plant, dm plant, fuel oil building 10 ht motors ( i ) servicing of ht motors ( a ) cleaning , tightness, bearing inspection , greasing etc. ( b ) painting of ht motors ( c ) nomenclature of motors ( ii ) complete overhauling of ht motors ( upto 1000 kw ) ( iii ) complete overhauling of ht motors ( above 1000 kw ) ( iv ) ht motor cooler ( general inspection & cleaning ) ( v ) painting of canopy / shed of ht motors 11 lt motors servicing ( i ) motors above 40 kw ( ii ) motor 40 kw to 11 kw ( iii ) motors 10 kw to 5.5 kw ( iv ) motors 5 kw to 1.1 kw ( v ) motors 1 kw and below 12 lt motor overhauling : ( i ) motors above 40 kw ( ii ) motor 40 kw to 11 kw ( iii ) motors 10 kw to 5.5 kw ( iv ) motors 5 kw to 1.1 kw ( v ) motors 1 kw and below 13 servicing of battery bank ( a ) servicing of unit / station / switchyard battery set ( b ) cleaning / servicing of 220 v dc db ( c ) cleaning / servicing of 220 v dc solenoid valve db 14 servicing of soot blowers ( a ) servicing of soot blowers