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ACHIEVEMENT 2013-14 : AS ON 31.03.2014
Power Sector Northern Region
PARAMETER BUDGET RE ACTUAL % ARSC-VARANASI
GROSSTURNOVER
2000 1641 2011.12
CASHCOLLECTION
1700 1873.50
All Figures in Rs Lacs
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ACHIEVEMENT 2013-14 : AS ON 31.03.2014
Power Sector Northern Re ion
PARAMETER BUDGET RE ACTUAL % ACH
OBRA R&M
GROSS TURNOVER 625 420422.29 67
CASH COLLECTION 361 356.62 92
OBRA R&M [7&8]
GROSS TURNOVER 572 211 91.92 16
CASH COLLECTION 270 0.00
RIHAND R&M
GROSS TURNOVER 30 52 70.42 234
CASH COLLECTION 14 50.80 362
All Figures in Rs Lacs
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PROJECTION FOR FY 2014-15
Power SectorNorthernRegion
PARAMETER BE FY-2014-1
RSC-VARANASIGROSS TURNOVER 1000
OBRA R&M
GROSS TURNOVER 900
OBRA 7 & 8
GROSS TURNOVER 740
RIHAND R&M
GROSS TURNOVER 40SINGRAULI ESP R&M
GROSS TURNOVER 350
TOTAL 3030
All Figures in Rs Lacs
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BHEL, RSC-VARANASI
CURRENT YEAR PERFORMANCE AS ON 31.03.2014
Power Sector Northern Region
ORDER BOOKED (FY 2013-14) R
CUSTOMER/PROJECT WORK
NTPC/SINGRAULI STPS Turbine & Generator
NTPC/TANDA Turbine & Generator
NTPC/UNCHAHAR TPS Turbine & Generator
NTPC/RIHAND STPS Turbine
UPRVUNL/ANPARA TPS Turbine & Boiler
UPRVUNL/PANKI TPS Turbine & Boiler
UPRVUNL/OBRA TPS Turbine & Boiler
PIPRI/UPJVUNL
TOTAL
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BHEL, RSC-VARANASI
Power Sector Northern Region
ORDER BOOK (FY 2014-15)
CUSTOMER/PROJECT WORK
PREVIOUS YEAR CARRY FORWARD
NTPC/UNCHAHAR TPS Turbine & Generator
NTPC/RIHAND STPS Turbine
UPRVUNL/OBRA TPS Boiler
TOTAL
CURRENT YEAR
UPRVUNL/PANKI TPS Turbine & Boiler
TOTAL
EXPECTED ORDERS
GRAND TOTAL
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MILESTONE SCHEDULE : PLAN & ANTICIPATED
SL. PROJECT/UNIT No.
MW ActualDays
ContractualDays
Advance /On Time
Complen
1 ANPARA # 1 210 11 15 4 27.04.
2 ANPARA # 1 210 135 33
Demoblisation and re
mobilisation due to civil
work done by customer 16.10.
3 ANPARA # 3 210 30 30 0 12.12.
4 ANPARA # 5 500 31 35 4 07.03.
5 OBRA # 9 200 32 25 Extra work done 21/12/
6 PANKI # 4 105 13 18 5 16.10.
Power Sector Northern Region
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MILESTONE SCHEDULE : PLAN & ANTICIPA
SL. PROJECT/UNIT No.
MW ActualDays
ContractualDays
Advance /On Time
Completio
7 PIPRI # 4 50 29 55 26 14.06.13
8 RIHAND #3 500 31 40 9 11.10.13
9 SINGRAULI # 3 210 14 15 1 23.04.13
10 SINGRAULI#6 500 6 15 9 26.04.13
11 TANDA # 1 110 49 50 1 23.10.13
Power Sector Northern Region
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OUR ESTEEMED CUSTOMERSCUSTOMER /
PROJECT
100 MW 110MW 200 MW 210 MW 500 MW
UN
ANPARA 3 2
OBRA 3 5
PANKI 2
UPRVUNL 3 2 5 3 2 1
RIHAND 4
SINGRAULI 5 2
TANDA 4
UNCHAHAR 5
NTPC 4 5 5 6 2
THERMAL 3 6 10 8 6 3
Power Sector Northern Region
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OUR ESTEEMED CUSTOMERSOTHER CUSTOMERS (INDUSTRIAL & HYDRO SETS)
CUSTOMER / PROJECT 12.5 MW 18 MW 22.4 MW 33 MW 50 MW
UN
UPJVNL/RIHAND HYDRO 6 6
IFFCO / PHULPUR 2 1 3
KSFL/SHAHJAHANPUR 2 2
UPRVUNL/OBRA HYDRO 3
TOTAL 2 1 2 6 6 1
Power Sector Northern Region
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SOME OF THE TROUBLESHOOTING JOBS
CARRIED OUT
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HIGH CHRONIC VIBRATION AT ANPARA
Severe Axial & Vertical vibration in Brg # 5 & Brg # 6 P High Vibrations were also noted in Stator Endshield an
header and increased seal oil flow. Vertical vibrations suddenly increased above 50 sand120 s& machine had to be debarred
Spectrum recorded showed sever 2x componentshigher frequency components & mapping was car
CONCLUSION:
VIBRATION I NDUCED WERE FOUNDATION IN
ELECTRICAL IN NATURE
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CRACKS WITNESSED
IN COLUMN
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CRACKS WITNESSED IN
BRG # 6 PEDESTAL
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ACTION TAKEN1. REPLACEMENT OF ROTOR AND BRG # 4&
2. REGROUTING OF SECONDARY FOUNDA
BRG 6 PEDESTAL AND STRENTHENING O
COLUMN NO 11& 12
RESULTS : MACHINE SUCESSFULLY SYNCH
WITH VIBRATIONS OF SHAFT BELOW 60
PK-PK AND PEDESTAL BELOW 30 PK-PK
BRGS
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MOULDS PREPARED FOR TEST & ITS TESTING
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HEAVY SPARKING AT EXCITER IN UNIT#4, PANKI (Heavy Sparking in exciter commutator of Unit # 4 Panki TPreported and soon the problem rose to alarming level an
had to be debarred on June 21 2013.
Vibrational analysis and electrical test were carried out by
and based on that following were suggested.
1)Undercutting of mica on the commutator
2)Carrying out the drop test on the commutator segments an
pitch apart & grrove chamfering and maintaining geom3)Checking the commutator for non uniformity, all the bru
their correct spring pressure and he usage of correct gra
brush.
Results : The sparking though reduced but still was not
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ACTION TAKEN BY RSC VARANASI RSC ENGINEER VISITEDTHE SITE AND FOU
THAT THE UNDERCUTTING & GOOVECHAMFERING WERE IMPROPER AND STI
DEMANDED MORE BUT THE COMMUTAT
BEING OLD AND REUSED CONTINOUSLY
SUSPICIONS OVER POSSIBILITY OF FURTUNDERCUTTING DAMAGING THE INSUA
THE EXCITER ARMATURE WAS SUGGESTE
REPLACEMENT AND UNIT WAS BROUGH
TO BAR WITHIN 7 DAYS.
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CHRONIC AXIAL VIBRATION PROBLEM AT NUNCHAHAR U#3 (210MW) High axial vibration of LPT Rear Bearing in U# 3
values above 50s and velocity around 20 mm
The spectrum analyses revealed unloading of Brg
ACTION TAKEN1. CATENARY & DECK CORRECTION AND ALIGNMENT
2. DESTRETCHING & STRETCHING OF FOUNDATION BOL
BOLT WAS STRETCHED TO 2.43 AND THE FRONT BOLTS DEVI ATING FROM THR NORMAL APPROACH OF STRETC
FRONT TO A H IGHER AS COMPARED TO REAR TO ENSU
LOADING AS PER SPECTRUM
RESULTS
The axial vibration reduce to below 25 microns & Velocity to less t
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PEDESTAL 4 BOLT STRETCHING,U#3
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SEVERE EARTH FAULT AT DEVIGHAT NEPA
(MACHINE BROUGHT TO GRID WITHIN 20 D
NEA had reported about the earth fault of stator Un
Devighat. BHEL RSC Varanasi engineer reportfor attending the earth fault.
Observations:Fault severe in nature resulting meltin
overhang portion of two coils of B phase & bur
of insulation of the nearby three other coils.
Constraints : Space constraint on removal of pole
constraint for removal of rotorSolution: Stator Removal Causing Both Time, Cost and
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Solution: Stator Removal Causing Both Time, Cost
easier Machine Re-levelled, aligned and Brought Back t
20thDay with better running parameters compa
other running Units
After replacement of the individual coils HV of the
were carried out at 14.2 KV for 1 minute.
After finalization of the stator the HV of all coils/p
carried out at 9Kv in two parts and IR and PI ta
SEVERE EARTH FAULT AT DEVIGHAT NEPAL
(MACHINE BROUGHT TO GRID WITHIN 20 DAYS)
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U# 2 w
vibratparam
comp3
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