Download - Gen Air Test (Rgm)
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8/18/2019 Gen Air Test (Rgm)
1/15
Station: NTPC-
RAMAGUNDAM
BHEL Ref No.PS-DC-202-500-0018
NTPC Ref no RGM1TS200!S"eet 1 of 12
P#ant a$ea: TURB% GENERAT%R
PR%CEDURE &%R GENERAT%R A'R T'GHTNESS TEST
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LIST OF CONTENTS
PLANT DETAILS
OBJECTIVE
PROPOSAL
SERVICES REQUIRED
SAFETY PERECAUTIONS
EER!ENCY PROCEDURE
STATE OF T"E PLANT
ET"OD
COPLETION CRITERIA
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8/18/2019 Gen Air Test (Rgm)
2/15
Station: NTPC-
RAMAGUNDAM
BHEL Ref No.PS-DC-202-500-0018
NTPC Ref no RGM1TS200!S"eet 2 of 12
P#ant a$ea: TURB% GENERAT%R
PR%CEDURE &%R GENERAT%R A'R T'GHTNESS TEST
SL.NO
1.0
1.1
1.2
PLANT DETAILS
500 MW Generator consists of the following components.
a. STATOR
Stator Frame
n! Shiel!s
Stator "ore
Stator win!ing
#$!rogen coolers
%. ROTOR
Rotor Shaft
Rotor win!ings
Rotor Retaining Rings
Fiel! "onnections
c. &AR'(GS
!. S#AFT SA)S
The two pole generator is !esigne! with !irect water cooling for the stator win!ing* phase connectors an! %+shings an! !irect#$!rogen cooling for rotor win!ing. Generator losses* s+ch asiron losses* win!age losses an! stra$ losses are also !issipate!thro+gh h$!rogen. The generator frame is press+re , resistant*gastight an! e-+ippe! with maor components mentione! a%o/e.
The h$!rogen coolers are arrange! /erticall$ insi!e the t+r%ineen! stator en! fiel!.
STATUS
Si(nat)$e*
NTPC BHEL
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8/18/2019 Gen Air Test (Rgm)
3/15
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8/18/2019 Gen Air Test (Rgm)
4/15
Station: NTPC-
RAMAGUNDAM
BHEL Ref No.PS-DC-202-500-0018
NTPC Ref no RGM1TS200!S"eet + of 12
P#ant a$ea: TURB% GENERAT%R
PR%CEDURE &%R GENERAT%R A'R T'GHTNESS TEST
SL.NO
1.
1.
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The Generator is pro/i!e! with the following a+iliaries which areessential for generator operation.
The$ are
Seal oil s$stems
Gas S$stems
3rimar$ Water S$stem
citation S$stem
Respecti/e Testing Sche!+les 4 O M man+als are to %e referre!for commissioning* operation an! maintenance of these s$stems.
Technical Specification of Generator are gi/en %elow.Generator T$pe T#6F 115457
Main citor T$pe )R 80470 , 049:20
3ilot citor T$pe )3 5042:0419
Generator Apparent 3ower 5;; M
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8/18/2019 Gen Air Test (Rgm)
6/15
Station: NTPC-
RAMAGUNDAM
BHEL Ref No.PS-DC-202-500-0018
NTPC Ref no RGM1TS200!S"eet 5 of 12
P#ant a$ea: TURB% GENERAT%R
PR%CEDURE &%R GENERAT%R A'R T'GHTNESS TEST
SL.NO
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5.0
5.1
5.2
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SERVICES REQUIRED
A/aila%ilit$ of 'nstr+ment air
A/aila%ilit$ of (itrogen gas
A/aila%ilit$ of
Test press+re ga+ge of range 0:9 =S" with least scale
!i/ision of 0.01 =S" Merc+r$ Manometer with mm scale
Generator win!ing Temp 'n!icator4Recor!er in C"&.
Water DCE Manometer
A/aila%ilit$ of man power with re-+ire! tools
A/aila%ilit$ of lighting4comm+nication
A/aila%ilit$ of Soap Sol+tion for test.
SAFETY PRECAUTIONS
6e%ris in the test area cleare!.
Approach4Stair "ase43latforms where/er re-+ire! are ma!ea/aila%le.
6ispla$ of %oar! (o c+tting4wel!ing at all floors ma!e
3orta%le fire eting+ishers are a/aila%le in the test area.
STATUS
Si(nat)$e*
NTPC BHEL
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8/18/2019 Gen Air Test (Rgm)
7/15
Station: NTPC-
RAMAGUNDAM
BHEL Ref No.PS-DC-202-500-0018
NTPC Ref no RGM1TS200!S"eet of 12
P#ant a$ea: TURB% GENERAT%R
PR%CEDURE &%R GENERAT%R A'R T'GHTNESS TEST
SL.NO
6.0
9.1
9.2
7.0
8.1
8.2
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8.
8.5
8.9
EER!ENCY PROCEDURES
The test team sho+l! %e well aware of proce!+res to %e a!opte!in case of an$ a%normalit$ in the acti/it$.
The test team sho+l! Bnow well a%o+t the proce!+res to %ea!opte! in case of !amage to machiner$ or in+r$ to personnelconnecte! to the acti/it$.
STATE OF T"E PLANT
Assem%l$ of generator an! fiing of en! shiel!s an! manholeco/ers complete!.
Seal oil s$stem commissione! an! p+t into operation for contin+o+s r+nning.
Assem%l$ of gas s$stem piping is complete!.
Generator terminal %+shings are connecte!.
#2 gas coolers not %e charge! with water.
Stator win!ing fille! with primar$ water an! primar$ water tanBBept press+re less. All the /al/es close! in 3.W. S$stem. "onnecta DCE T+%e manometer in Waste gas line of 3.W. TanB after /al/eM=F71 AA 505 an! close /al/e M=F71 AA 509. Open /al/eM=F71 AA 51 an! AA 505. 't is also re-+ire! to o%ser/e for an$leaBage into primar$ water s$stem thro+gh stator win!ings !+ringair leaBage test.
STATUS
Si(nat)$e*
NTPC BHEL
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8/18/2019 Gen Air Test (Rgm)
8/15
Station: NTPC-
RAMAGUNDAM
BHEL Ref No.PS-DC-202-500-0018
NTPC Ref no RGM1TS200!S"eet ! of 12
P#ant a$ea: TURB% GENERAT%R
PR%CEDURE &%R GENERAT%R A'R T'GHTNESS TEST
SL.NO
8.8
8.;
8.7
8.10
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'nstr+ment air s+ppl$ connecte! %efore /al/e M=G25 AA 501. Air for filling sho+l! %e free from moist+re* oil an! an$ mechanicalimp+rit$.
3recision press+re ga+ge of class 0.9 for press+re meas+rementfie! at M=G25 "3001.
A merc+r$ DCE manometer connecte! in one line of mechanicalp+rit$ in!icator M=G05 "3501 for air press+re meas+rement an!for o%ser/ing the leaBage rate. Other pipe line %lanBe! an!/al/es M=G05 AA 501 an! AA 502. =ept open.
Soap sol+tion Bept rea!$ to checB the leaBages !+ring test.
All the instr+ments in gas s$stem are mo+nte! as per scheme.
All the /al/es pro/i!e! in #2 Cnit are Bept open so that all thelines are press+irse! !+ring air filling. All /al/es connecte! to/ents are Bept close!.
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8/18/2019 Gen Air Test (Rgm)
9/15
Station: NTPC-
RAMAGUNDAM
BHEL Ref No.PS-DC-202-500-0018
NTPC Ref no RGM1TS200!S"eet 8 of 12
P#ant a$ea: TURB% GENERAT%R
PR%CEDURE &%R GENERAT%R A'R T'GHTNESS TEST
SL.NO
8.19
8.18
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;.1
;.2
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8/18/2019 Gen Air Test (Rgm)
10/15
Station: NTPC-
RAMAGUNDAM
BHEL Ref No.PS-DC-202-500-0018
NTPC Ref no RGM1TS200!S"eet of 12
P#ant a$ea: TURB% GENERAT%R
PR%CEDURE &%R GENERAT%R A'R T'GHTNESS TEST
SL.NO
;.
;.
;..1
;..2
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Testing of 3ipe &etween (2 &ottle RacB an! 3.W. TanB
6isconnect pipe lines at isolating flange (o. 12 an! primar$water tanB. &lanB one en! of this pipe line %$ a temporar$ flange.=eep /al/e @M=371 AA 502 open. 3ress+rise this pipe %$ (2 gasto a 3r. Of 5 %ar. O%ser/e the leaBage rate for 2 #rs. Theresho+l! not %e an$ press+re !rop in pipe line. "hecB for an$leaBage !+ring this test %$ means of soap sol+tion at all wel!
oints an! rectif$ an$ leaBage. "onnect %acB the pipe lines ins$stem after s+ccessf+l completion of test.
)eaBage Test of Generator along with Gas S$stem +sing Air.
Air Filling in Generator "asing
Open /al/e M=G25 AA 501 an! fill air in generator an! gaspiping +pto press+re of &ar. 6+ring filling o%ser/e theperformance of press+re reg+lating /al/e of seal oil s$stem an!maintain the #2 an! air si!e seal oil 3ress+re as recommen!e!."lose /al/e M=G25 AA 501 as soon as press+re in the casingreaches %ar.
"hecBs !+ring Air )eaBage Test
6+ring the air leaBage test* appl$ Soap Sol+tion at all oints for checBing leaBages in following areasH
Joint an! %olt hea!s on Stator %o!$
Wel! oints on generator %o!$
Joints of terminal %+shings* manhole co/ers* #2 coolers
etc. Gas piping wel!ing oints an! flange! oints.
STATUS
Si(nat)$e*
NTPC BHEL
-
8/18/2019 Gen Air Test (Rgm)
11/15
Station: NTPC-
RAMAGUNDAM
BHEL Ref No.PS-DC-202-500-0018
NTPC Ref no RGM1TS200!S"eet 10 of 12
P#ant a$ea: TURB% GENERAT%R
PR%CEDURE &%R GENERAT%R A'R T'GHTNESS TEST
SL.NO
'i
3assing of /al/es in the s$stem to atmosphere an!
passing thro+gh /al/e glan!s.
Gas !rier shell.
Seal oil TanB Flange! oints.
'mp+lse line connection for press+re reg+lating /al/e in
seal oil s$stem
"onnecting oints of all meas+ring instr+ments pro/i!e! in
gas s$stem.
3assing of /al/es pro/i!e! in oil4water !etector lines.
Sealing oints pro/i!e! for taBing o+t the stator win!ing
Temp. terminals.
'f an$ leaBage is o%ser/e! the generator sho+l! %e !epress+rise!an! same sho+l! %e atten!e! an! test sho+l! %e repeate!.
Recor! half ho+rl$ rea!ing on the merc+r$ manometer pro/i!e!in #2 +nit for this test. Recor! am%ient an! generator temperat+reas meas+re! from RT6Es.
STATUS
Si(nat)$e*
NTPC BHEL
-
8/18/2019 Gen Air Test (Rgm)
12/15
Station: NTPC-
RAMAGUNDAM
BHEL Ref No.PS-DC-202-500-0018
NTPC Ref no RGM1TS200!S"eet 11 of 12
P#ant a$ea: TURB% GENERAT%R
PR%CEDURE &%R GENERAT%R A'R T'GHTNESS TEST
SL.NO
'ii
'<
;..
O%ser/e for an$ press+re rise in 3.W. tanB !+ring test %$ meansof Water DCE manometer pro/i!e! for this p+rpose. 'f an$ increaseis o%ser/e!* stator win!ing s$stem sho+l! %e checBe! for leaBage.
"ontin+e the test till the rate is well within specifie! limit. 'f noleaBage is o%ser/e!* press+re !rop sho+l! %e checBe! for 82 hrs.contin+o+sl$.
"alc+lation of )eaBage Rate
)oss of air is !etermine! as followsH
< , 0.2972 3%1 : 32 > 3%2
? 28>T1 28 > T2
Where < K )oss of air in M at (.T.3.4 2 #rs.
0.297 K 28o = 4 101.25 m %ar
? K 6+ration of leaBage test* #rs.
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8/18/2019 Gen Air Test (Rgm)
13/15
Station: NTPC-
RAMAGUNDAM
BHEL Ref No.PS-DC-202-500-0018
NTPC Ref no RGM1TS200!S"eet 12 of 12
P#ant a$ea: TURB% GENERAT%R
PR%CEDURE &%R GENERAT%R A'R T'GHTNESS TEST
SL.NO
9.0
3%1 K &arometer rea!ing at %eginning of leaBage test* in m%ar.
3%2 K &arometer rea!ing at the en! of leaBage test m %ar.
T1 K Temperat+re of the gaseo+s atmosphere at %eginningof leaBage test 0".
T2 K Temp. of the gaseo+s atmosphere at en! of leaBageTest 0".
COPLETION CRITERIA
)eaBage test sho+l! %e carrie! o+t for 82 hrs at %ar an!a/erage air loss sho+l! %e calc+late!. The permissi%le air loss for a gas tight s$stem is %elow 2.m at (.T.3. 4 2 #rs.
'f air loss is higher* checBs sho+l! %e carrie! o+t for !etecting theleaBage areas.
STATUS
Si(nat)$e*
NTPC BHEL
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8/18/2019 Gen Air Test (Rgm)
14/15
3RO"6CR FOR G(RATOR A'RT'G#T(SS TST
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8/18/2019 Gen Air Test (Rgm)
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PROJECT #S RAA!UNDA 500 $
PROCEDURE !ENERATOR AIR TI!"TNESS TEST
PURPOSE OF
DOCUETFOR E%ECUTION # INFORATION
DOCUENT PS&TS%&183&00&03
"op$ (oH
'ss+e! to H
00 =J M=S =3TM 18.07.200
Re/.(o. 3repare! %$ Re/iewe! %$ Appro/e! %$ 6ate
B"ARAT "EAVY ELECTRICALS LIITEDPSSR#TEC"NICAL SERVICES
474' A(() S)*)+' N)(,)()-'
C/(()+ 600 035.