order problems

8/16/2019 Order Problems

1/4

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Problems resolved as a part of service order receivedTOTAL TWO PROBLEMS WERE REPORTED AS PART OF SER!CE ORDER

ORDER "#

$OB# %PT Mod&le over'a&li() at *TPC + Korba ,-- MW .(it/0

"1-# !*TROD.CT!O*

NTPC Korba with an installed capacity of 2100 MW has 3 x 200 MW and 3 x 500 MW nits!

sitated at Korba "C#$#% KW& desi'n ()*+ spply T$ sets were installed# &nit ,3 "200 MW% was

co--issioned on 1.th March 1/ and started co--ercial 'eneration fro- 01 st ne 1/# NTPC

awarded the )P Trbine oerhalin' alon' with slow speed balancin' with the schedle period of

2 days bar to bar# The nit was withdrawn for oerhal on 2 nd 4pril 200#

&nit de6synchroni7ed for oerhal 8 at 23#1 )rs on 02#0#200

T$ on barrin' for nit oerhal 8 at 23#50 )rs on 02#0#200

Machine on barrin' after oerhal 8 at 1.#00 hrs on 1#0#200

Machine synchroni7ed 8 at 0#1 hrs on 21#0#200

&nit63 "200 MW% )P Trbine -odle oerhal was co-pleted within 1 days 5hrs by proper

plannin' and strate'ies and by adoptin' latest technolo'ies#

,1- ACT!!T!ES CARR!ED O.T FOR C2CLE T!ME RED.CT!O*

,1" RED.CE T%E T.RB!*E COOL!*3 DOW*

Trbine controlled coolin' prior to -9c de6synchroni7ation8 Machine was rn at redced

steady load and lower -ain stea- : ;) stea- te-peratres for 2 hrs as per chedle of actiities "plan : actal% carried ot in preios oerhals was reiewed and of

se?ential : parallel actiities were prepared

()*+ reiewed all actiities by horly basis and ti-e ta@in' processes for each actiities!

idle ti-es between actiities! delay in arran'in' spares and -obili7ation etc# were identified

before start p the wor@#

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Arin' exection of the wor@ the reiewed process were effectiely i-ple-ented and the

idle ti-e between the actiities were eli-inated

,16 RO.*D T%E CLOCK $OB PLA**!*3

Aeploy-ent of two separate 'rops to carry ot the Bob rond the cloc@# =t helped to carry

ot Bob with a fresh syner'y by each of the wor@in' 'rop

,16 .SE OF LATEST TEC%*OLO32

>low speed dyna-ic balancin' of )P rotor at site

&se of indction heatin' -achine for dis-antlin' and asse-bly of trbine casin' partin'

plane stds#

;e-ote operation of *


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>chedle of actiities "plan : actal% carried ot in preios oerhals was reiewed and of

se?ential : parallel actiities were prepared

()*+ reiewed all actiities by horly basis and ti-e ta@in' processes for each actiities!

idle ti-es between actiities! delay in arran'in' spares and -obili7ation etc# were identified

before start p the wor@#

Arin' exection of the wor@ the reiewed process were effectiely i-ple-ented and the

idle ti-e between the actiities were eli-inated

,16 RO.*D T%E CLOCK $OB PLA**!*3

Aeploy-ent of two separate 'rops to carry ot the Bob rond the cloc@# =t helped to carry

ot Bob with a fresh syner'y by each of the wor@in' 'rop

01- SE4.E*CE OF ACT!!T!ES

&nit was withdrawn at 00#00 )rs on 02#0#200#

)P shaft te-peratres recorded at the ti-e of -9c de6synchroni7ation were

0oC #

Trbine oil p-p stopped at 100oC ")P> te-p% at 10#00 hrs on 0#0#200#

$enerator dis-antlin' started on 0#00 hrs on 03#0#200

Trbine dis-antlin' started at 10#00 hrs on 0#0#200#

Trbine asse-bly co-pleted at 0#00 hrs on 1/#0#200#

=nslation on )PT -odle co-pleted by 1/#00 hrs on 1/#0#200#

Trbine pt on barrin' at 20#00 hrs on 1/#0#200

Machine rolled at 20#00 hrs on 20#0#200#

Machine synchroni7ed at 21# hrs on 20#0#200

61- CO*CL.S!O*

4 bench-ar@ on record -ini-- dration of 1 day in 250 MW capital oerhal of %PT7 LPT

5 3e(erator alo() 9it' MP!7*FT of LP T&rbi(e blades cold be achieed de to reiew of

traditional oerhalin' practices adopted by ()*+# =t was the deter-ination! co--it-ent!

-onitorin' and follow6p of associated actiities that ascertained to achiee sch an enthsiastic

tar'et# Wor@in' ot actiities well in adance with endors : csto-er and rond the cloc@

exection of Bob with new strate'ies helped to -eet schedle deadlines and redction of ti-e

period by days#

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