WESTINGHOUSE VALVE PRESSURE LOCKING SPECIAL ...SPECIAL TEST PROCEDURE PRESSURE LOCKING 4. Differential Pressure Test a. With the valve open fill the specimen with water . Revision

• WESTINGHOUSE VALVE PRESSURE LOCKING SPECIAL TEST PROCEDURE

.~· ..

9605310074 960524 PDR ADOCK 05000237

. _____ P __ _ ___ _ _ _ __ PDR ..

Revision 0 September 12, :1995

ComEd Company

Corporate MOV Program Support

_ .....

'"

n F. Kelly V Program Support

Approved by~ <P ~ lvo Garza NES MOV Program Engineer

• SPECIAL TEST PROCEDURE PRESSURE LOCKING

Section A B c D E F G H I APPENDIX

A1 A2 A3 A4 AS A6 A7

TABLE OF CONTENTS

Purpose References

Title

Test Equipment anq Instrumentation Precautions Requirements and Procedures Results/Acceptance Criteria Records

· Personnel Qualification Schedule

VOTES Force Sensor Calibration LLRT Test Results Differential Pressure Test Results Bonnet Pressure ResponseTest Results Pressure Lock Test Results

· Pressure Response to Temperature MOV Data Sheet

Revision 0 09/12195

Page 2 of 15

Page 3

·3

3 3 4 6 6 6 6

9 10 11 12 ' 13 14 15

SPECIAL TEST PROCEDURE PRESSURE LOCKING

A PURPOSE

Revision 0 09/12/95

Page 3of15

The purpose of this special test is to validate the proposed model and input assumptions for quantifying capability margin for valves susceptible to pressure locking. Specifically, testing will verify:

• the model for estimating MOV pressure lock pullout forces • bonnet ability to retain pressure when upstream pressure source is

removed • bonnet pressure response to temperature changes

c

The MOV for this special test is a Westinghouse valve. This procedure provides the test requirements, procedures, and equipment to be used.

This special test pro.cedure shall not be used on equipment installed in an . operating Nuclear Station.

8. REFERENCES

1. Generic Letter 95-07, Pressure Locking and Thermal Binding 2. Com Ed ·Quality Assurance Program Sections ·g and 11

C. TEST EQUIPMENT AND INSTRUMENTATION

1. All instrumentation, measuring, and test equipment used in the performance of this test program should be calibrated in accordance with . ComEd's Quality Assurance program

2. Measurement Equipment is listed in Table 1 3. Thrust, torque, motor power, and motor current shall be monitored. 4. Upstream, downstream, and bonnet pressure and. temperature should be

recorded as specified herein. 5. Westinghouse valve 6. Teledyne Quick Stem Sensor 7. Hydro-pump capable of generating 2500 psi 8. Miscellaneous valves and fittings

D. PRECAUTIONS

1 .. Standard safe work practices shall be followed when working around high pressure and electrical test equipment.

2. Do not exceed 2500 psig pressure.


E. REQUIREMENTS AND PROCEDURES

Revision O 09/12/95

Page 4 of 15

Table 2 specifies the testing to be performed and the test sequence. This test sequence may be modified during the special test. New or revised test sequences should be added to Table 2.

1. Pre-Test Preparatiori a. Record valve and actuator nameplate data into the test Data Sheet

(Appendix A-7). b. The required measurements and associated instruments to be

installed are listed in Table 1. c: The data acquisition system will consist of the VOTES computer,

breakout box, motor power monitor, and associated cables. d. Pressures and temperatures will be recorded manually. e. Prior to any testing or stroking of the valve, actuator switches shall be

set as follows: 1) The open limit switch shall be set to prevent back-seating of the

valve. '(3D/o . ~~ \tr-~ /Oj·JJ-'jj-

iQnature · Date

2) The open torque switch should be bypassed a minimum of 25% of the open travel distance. ~ · '

~.O\~ /O'j-1)-c/s;-Signature Date

f. If necessary, c~libration of the VOTES Force Sensor and Teledyne Quick Stem Sensor shall be documented on Attachment A-1

2. Static Break-in Test

Verify that the valve has been stroked a minimum of 15 strokes open and 15 strokes closed. If not, cycle valve until the specified strokes a're

achieved. °IM•>\ '!'>~'- ., 1 ~.Sl ~"" ~ ~ ~ /01-13-'7~

Si ature Date 3. LLRT Test

An LLRT Leakage Rate Test shall be performed at specified torque switch settings in both directions to verify seat leakage requirements in accordance with approved station procedures. Document results in Appendix A-2


4. Differential Pressure Test

a. With the valve open fill the specimen with water .

Revision 0 09/12/95

Page 5of15

b. With the valve unpressurized, stroke test specimen open and then closed at the lower torque switch setting and record test data.

c. Pressurize upstream disk side per Table 2. d. Vent downstream disk side to atmosphere. e. Open t.he valve , record diagnostic test data, and record upstream

pressure. f. With the valv.e unpressurized, stroke test specimen closed ar:id record

test data. g. Perform valve factor calculation as described in Attachment A-3 and

record results.

5. Bonnet Pressur~ Response

a. With the valve open fill the specimen with water such that air pockets are vented and bonnet is filled with water. · ·

b. With the valve unpressurized and setup per Table 2, stroke test spetimen open.and then closed and record test dat9.

c. Pre~surize valve bonnet to the pressure indicated in Table 2 for this . test.

d. Vent upstream and downstream disk side to atmosphere and record bonnet pressure as a function of time. ' · .. · ·

6. Pressure Lock Test

a. With the valve open fill the specimen with water such that air pockets are vented and.bonnet is filled with water.

b. With th.e valve unpressurized and setup per Table 2, stroke test specimen open and then closed and recqrd test data.

c. Pressurize bonnet to the pressure indicated in Table 2 for this test. d. Vent downstream and upstream disk side to atmosphere. e. Record bonnet pressure and open/close the valve while recording

diagnostic test data.

SPECIAL TESTPROCEDURE PRESSURE LOCKING

7. Bonnet Pressure Response to Temperature Changes

Revision 0 09/12/95

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a. With the va.lve open fill the specimen with water such that air pockets are vented and bonnet is filled with water.

b. With the valve unpressurized and setup per Table 2, stroke test specimen open and then closed and record test data.

c. Heat bonnet to maximum achievable temperature. d. Mqnitor and record fluid temperature and bonnet pressure in Appendix

A-B until stable. . ~.

F. RESULTS/ACCEPTANCE CRITERIA

The results of ~his test will be used as technical input for evaluations and calculations to resolve/assess the pressure locking issue .. · Thi.s test has no acceptance criteria. Verify that calibrated equipment is wit.hin calibration dates at the completion of testing. . ·

(Y' Prri (c, \ o ... ~ o-\.J.:. \... . ( .... :, \\ ~c:: rc.li~n.~-;~ / 1-0 ·7~ ~<->~s.c"T"-'c .... ~ ~ ~s.~ Date

G.RECORDS

The following information shall be retained as Quality Records: . ·

• biagnostic Test Data, VOTES and MPM (electronic format) • Training Qualification Records for personnel operating test equ·ipment • Test results Data Sheets • Test Procedure ·

H. PERSONNEL QUALIFICATIONS

Operation of diagnostic test equipment shall be performed by qualified individuals.· This indudes: · · • Liberty.Tec;:;hnologies Basic, Advanced, and Continuing VOTES System

Training . · · · • Liberty Technologies Advanced MPM Training Personnel performing diagnostic test.ing shall sign C3nd date the applicable Data Sheet(s)

I. SCHEDULE.

A specific completion date is not required for this test.


Revision 0 09/12/95

Page 7of15

TABLE 1 C.:All.5AA11oi0 L-0 6 MEASUREMENT EQUIPMENYA"NB-TOLERANC.ES-

Measurement Parameter Device Name QA/Serial# Calibration Date/Due Date

Pressure Gage Upstream Disk €>62 '15" Cl-1-1.r / ~~~il".s + Side bACL

Pressure Gage Downstream -..· i.: Jt Side IV~~ '0 !:,.e ~

Pressure Gage Bonnet C'~&L bO~OO. 9-1-<iS'" /Po~ t- \ .. ~>-Temperature GaQe Bonnet ·- A'c,1 v5t:D -Stem Torque Teledyne Quick

-Stem Sensor - -

Stem Torque Liberty , VTC - -Stem Thrust · Teledyne Quick

Stem Sensor - -Stem Thrust '(Verification) Liberty, C-Clamp 2I8913ijt\ · OJ - '1S". /01-c; b Motor Power Monitor System Liberty, MPM A101'1,/C /020 7-13-'lc+//--i.~,,.'10 VOTES System ,,-_ . - - '-~/ Liberty -VOTES Breakout Box Liberty z. 'znr 1 a <Z 07-'jS I 01-ct{;,

(YIPM Co,..,~r AlOl't I C/01..0 7.,,2":J-1 'f //-?..3-7 s;.

prb~ /""k o-v-'

(V1 P """ o P '= e< A 'TOR :

i(.t·,,ftef'll _,, L LI\)_ . I 0 4f 7 'f ~ t!:/Z £$I 'i \ · CoA-{:Jo~,._~c\\~

\)o!l;;.s:. oPE~8'TOR > C\.-qs. ~c-J~rJ

~'~ .· ,--

os~13~S

De...;<:.:.

,/e···· I. ./

/ .

/ ~/gfct~

R-c v •ewe.A_./ Qq\e

'··


Revision 0 09/12/95

Page 8of15

TABLE 2 TESTING SEQUENCE AND NUMBERING

Procedure Test Title - Section

F.3 LLRT1 F.4 Differential pressure test to quantify friction factor at 500 psi F.4 Differential pressure test to quantify fricti9n factor at 1000 psi F.4 Differential pressure test to quantify friction factor at 1500 psi

F.5 Bonnet Pressure Response at 1000 psi and lowest torque switch setting F.5 Bonnet Pressure Response at 2000 psi and lowest torque switch setting F.5 Bonnet Pressure Response at 1000 psi and highest torque switch

setting ;

F.5 Bonnet Pressure Response at 2000 psi and highest torque switch setting

F.6 Pressure Lock Un-wedqinq at 500 psi and lower torque switch setting F.6 Pressure Lock Un-wedginq at 1000 psi and lower torque switch settinq F.6 Pressure Lock Un-wedging at 1500 psi and lower torque switch setting F.6·. Pressure Lock Un-wedqing at 2000 psi and lower torque switch setting ·

. .

'" :1

F.6 Pressure Lock Un-wedging at 500 psi and higher torque switch setting F.6 Pressure Lock Un-wedging at 1 ODO psi and higher torque switch setting F:6 Pressure Lock Un-wedging at 1500 psi and higher torque switch setting F.6 Pressure Lock Un-wedging at 2000 psi and higher torque switch setting

F.7 Bonnet pressure response to temperature at higher torque switch setting.

PRESSURE LOCKING SPECIAL TEST PROCEDURE Revision 0

Qs~ I

~CALIBRATION FIELD DATA SHEET

VAL VE TAG NUMBER: /.C5r tJ/lc u£

VOTES SYSTEM QA NO.: ;?71JC/-7/ 13£ -

CALIBRATOR LOCATION: THREADED ~READi?fl> SLOTTED

VOTES SYSTEM SERIAL NO.:

CAL DUE DATE: //r(, TRANSITION

19 )CJ0 r5

09/12/95 Page 9of15

Appendix A1

DESCRIPTION: v'or·£5 sr~r.c IY"l C.U I TJf q~5 (.t:-C/1r~0 0.0 :$0l IJ.:> ::S .c ,!_,.. ... Je1./0 ErrL·er/LJC. P//,J /,;?.7'(

C'-7 (..111/Zll ~/l. (.)f£1) j-o C1/1l 1~-P./I rL c;>ss.

NEW EFFECTIVE STEM DIA. / . .J:24 CB3-100 LENGTH: .jo ft AMP PROBE SETTING: ~v .2C> ;'{

ANTI-ROTATION DEVICE: (Ye1) no

CALIBRATION TABLE

RUN Test \ffi'feS CAL CLAMP TSS MAX RSQ CFA BFSL BFSL STEM ti Number/Date s-ws DEV. PRE- THRUST SENS % TEMP

NO. NO. TENSION CHG (F) O..s...> READING

I 9/rvb<: 3~7- f 007. 3 ·"Lc,qo f.O /"? c:-1 '2 /, CJV 0 l.o&o .:.. 2. 'I JytTcf 7drf

7 '1'1 s- r '-000 .. :z.. '+4-: { ,>-.'C 1 l C-1 J JS/c,\ II 1 oa -z. .J. 2-0 ict 8 (q \.000 o.+I 7o~r-

> ..

/

Prepared: -~ · Date: '9(1·3(7.s-Reviewed: .d?C.;l""/J Date: i~ .. ., 7

GAIN

S/)

s1.r

• PRESSURE LOCKING SPECIAL TEST PROCEDURE Revision 0

LLRT RESULTS DATA SHEET

• •• 9/12/95 Page 10of15

Appendix A2

VOTES' TSS C14, lbf · Cl6, lbf Pullout, Leakage·, Comments, Note upstream or downstream test. Test lbf scfm

·: .. ~

#/Date

L0/ 4-t:> LS- llf:g(l lS/f<f1 -I 0 * u f'J 11? c IJ lr1. :57PC rrs·r-

\ .. ~ 0 -k Jk;z,vAJSn<c;un ~/PC TLS.,-

l\ l~-1> l-0 13,l'a3 . t:>,S?.o 0 1\ opp1.s.·1~ ~lot..a c:it('~c~10"" - J)o-t:<.J AJ :J o:u· /l r>-1.

.. -L

1.0 0 Uf'-5T/l~/J;n :S:/D..t: res-;-:-

Prepared: 'efi~ Date: <1_-t'.>-7~ Reviewed: .·:1.(1~ Date: 7;,45r .) v c

PRESSURE LOCKING SPECIAL TEST PROCEDURE - .

Revision 0 DIFFERENTIAL PRESSURE TEST RESULTS DATA SHEET

VOTES '''ftC161~ Pullout Upstream Downstream 010 Test#/ Thrust, Thrust, Disk Side Disk Side Thrust, Date/ lbf lbf Pressure, Pressure, lbf'"' TSS psi psi

<O /Cfll> /lf~l'I

/~j.') JSoSbf!.> ~161 l~l SoO/Lffu 0 2'f~O

7 {911¥ ~-,.:_

1 '18!0J, . /c./-;, 6 5 .

J c;@i ~oo/ <f1o CJ )359

8/ q-13-~ 1s;t /,Y:.,99 33 78 ~~ / 101r;9 ~ !JV (}) J(;rt

c; l'i C> 12. / , ~/ ./ ;.:;t.;c'7

J~o I {b?& /;c,'70 0 2615

13 l~'-"1% l~lS't 3soo

. /mt; /;g %0 D 2/2(

0 I 0 - Run Load + Upstream Pressure x rr ( 1.2s)2

4 1 Valve Factor = ------"'---------~

. 1f 2 Upstream Pressure x - ( 3 .445)

. 4 .

Open Open Run Valve

Thrust, Factor1

lbf

IS II 0.33

/5~8 (p, 3/i./ ..

/'(8J. (/). 2 51

l>'-1/ . Q,;JO"IJ

/5'ff J 0. 1'14-

Prepared: ei~~ Date:q-13-7S-Reviewed:~· ~~~qLJ..__ Date: .1/p)1tf

.,151}

.ti;:

9/12/95 Page 11 of 15

Appendix A3

Comments

PRESSURE LOCKING SPECIAL TEST PROCEDURE Revision 0 _ DIFFERENTIAL PRESSURE TEST RES UL TS DATA SHEET

VOTES C16 Pullout Upstream Downstream 010 Open Open Test#/ Thrust, Thrust, Disk Side Disk Side Thrust, Run Valve Date/ lbf lbf Pressure, Pressure,_ lbf Thrust, Factor1

TSS psi psi lbf

/'b ;5TAT?C.. T/51 ~IO)~F 0 ~

;q~ 22.'tJ.. / '7 , ·;z

I Cf 2/~-, .:s10 / S-o S- 0 :l:i~ /.)S 2--,f,~1 ·~fi 19111 F\,f,'tl,rko - . l'f ).:j"C.Jt 4 /Ob /1 o?.{) 231-2.

,~, ,. /~If' ~/iJ "f ).o 2. "D 70 a !.:J'-jf_., L

-~•" fiq I -~ , ·fi'. J°L'I. ~· o; ~· (l,_).5% ' I S°I ?;; . - 1-4-2.13

/664 L-f '.309 \ lf-Tq ~ .11 /9~c.;'O 1 lfc;G 0 - I 1"1•/r<jj

10'. "11. f(~% ~ -- iCf(:,'f-/ "2...3., 7

/£ 34- '.I 1 }J. 1iqf 6/J.'J 0 ...,_ ?~

11'f(f- ~.r-~~ '} ·1~-.;

c23 /Cf~ ;zc-.o4r 3 /cJ '3 i1G°'° I("<> i 0 CJ J.s:i..? 'lb14. • / 9>

)- &( l'fSi olll. J-~SJ- /':7~b1,?~1~ 0 .J 'jt;Cf /b1+- . rt

,}.~ J113!/., 6 ;< 410 ;on,/ (o{;, ~ 0 ;2070 /f.70 . ( 7 . 'f-114 ' " .. Nole:

11·.oo

. Tr ( )2 0 I 0 - Run Load + Upstream Pressure x - 1.25 . . 4 .

1 Valve Factor =

Upstream Pressure x Tr (3.445)2

4 .

Prepared~~-~ Date:'1-13-7~ RevieWed:._,,.../ __ _.,,.,. _____ "Date~ ¢~fq5

"C) ..

(-Z ......... JO

.\..) P.5.~rc-._,...,.....

:\·; ..

• 9/12/95 Page 11 of 15

Appendix A3

Comments

Iv OOp~ i cX. d fTr -J.- .+ .i'r.t

re ~.surr .s l"c LJc

c. ' ::::

PRESSURE LOCKING SPECIAL TEST PROCEDURE .. ~.

Revision O DIFFERENTIAL PRESSURE TEST RESULTS DATA SHEET

VOTES C16 Pullout Upstream Downstream 010 Test#/ Thrust, Thrust, Disk Side Disk Side Thrust,

""!)

Date/ lbf lbf Pressure, Pressure, lbf TSS psi psi

4-Vo~·t> ~ -Z.6'1 C( '% . -, 0 70<#;4 t~tS ·~~ 2.0 't3

4:h4-f5 Q-. -~' '6\q1.; lS f.t.L/ () <9~0

1 Valve Factor =

0 I 0 - Run Load + Upstream Pressure x 1T ( 1.2s)2

. 4 ' .

Open Open Run Valve

Thrust, Factor1

lbf ,,.--

/l'fL Q.1~

11'){,t O.IL?

• 9/12/95 Page 11of15

Appendix A3

Comments

l2e..ve.u~ Clo,U t>P ··h~.st-

~J •

PRESSURE LOCKING SPECIAL TEST PROCEDURE Revision O PRESSURE LOCK TEST RESULTS DATA SHEET

Test Description VOTES MPM Title/ c..14(c16 Test#/ Date/ TSS Thrust, ·Date lbf

s~\.c IS' -- ;cf3% /'15}~

Pre ~sur~ Loe\< I c, Cf:l.~ ~ Cl-11. '~ 1soofr<~L .. k · ICf,, Ila Ts:, -=2.0

Sr\~~ I<. It - ~ I /c.r1

l'(H-

"

09 Thrust,

. lbf

I s110-.

5'1<1 I

. /CJ0.2

I

Prepared:\ ~S~- Date:'-]~)~~~ Reviewed: ff.(l,l{JjJ \SS y. y

Bonnet Pullout Pressure, Motor

. psi Power, kW

CJ -

1'1SO \.81(

0 -

Date:f}~ .

Pullout Torque,

lbf

.;;?'D.,c

~~l.1

.;?0,3

'

• Appendix A5 9/12/95 Page 13of15

Comments

'T,...r .... ~\. Aiu..,..-:. n,b\~w

PRESSURE LOCKING SPECIAL TEST PROCEDURE Revision o PRESSURE LOCK TEST RESULTS DATA SHEET

Test Description VOTES MPM Title/ ....:1tC16 Test#/ Date/ TSS hrust,

Date lbf

~~~'- c;:+,.;..->.-c. OP 1'5 Sllf r~ T'!fSinfl"A u?o/c:> I

2, .S.'TA'Trc.. /l:O\ fl4"}!;, s~C{~l(. OLP T.S.S~'K zao3 I

- cJ7 J+"'\-\-1C.. 1/:1)> rt~

>!-c:i~(-(., OLP "T~f"\AX ~1z..1

_s,1, "'"'-it. II: I"\ /C/1%, . S.-\-<t ~;(, Sot> L p -?'6 'TSSt""'A'l<: ~0 17cr ··

~I<- I I '.1.1 tq-132:. .S.\-ci ~(-L soo LP ~~ °1 -r;.SMAY :;;o:i"aD

fl .:if S<JD 1<-v b&1V1.if 30 '/5S />Yli-- 11·.-1(. 17,4% PL !,-00 2op1~

PL c.1.\- SCc>/ w ~,.., ..... < ~ si T.Ss.rv-.,.o.><. 11"."J'- flt~' PLS-00 1 '1 Bl"<

>-\."'~ i«:: jOC(J LP 32 T S.S. /./'\ f>. '><.. II : '6" 'Pf,{c,· s;;A<\1c_ /_ooO Lf' I~ Cfb'L

f"L c.1~ ]oao 3:3> T.SS (""),A'!<' 11 :so

(-'l. 1000 I~,~-

2co-i.'1

l.>.S f"'\A'lS' ll:S"c, '% _S.+.; ~I c. 1000LP >'T ~ ~~ 1c_ 10:0 LP . 1'1,%1..

PL c,),.. looo '3S T:::.5 rA'X n:o )/\~ PL \OCO /tc:i <i'i'f

/<)CO LP T56MAX 12-.c(, 1a.3 s+ ... )·i(_ 3G ...s~~,(.. 1'1,.21~

PreparedZ§\~

09 Bonnet Pullout Thrust, Pressure, Motor

lbf psi Power, kW

)'f52 0 /.14'1/ .t4.J

11o0 0 1.17

l'dCC. 0 /,!CS-/No/

I L.f-'+ I 500 Tllf<t:~ ..!Jc. r

J<+S-6 ~O'Q Tltt<€t0 c::.:J.;1(;;

'3,()oS" - .1MJJ,r l. I b.r" \<. w

2'188 SJLf- l.lqi"K~

Bc1 (:, C(~ ca .Bil<

:Sib\ ~'18 Ct '161

y30 /ooco Cl.l~\.<.t.:.

3390 '16<2> j.3,<;rkW

.S2c 1se,o , (, "j'l..

Pullout Torque,

lbf

~.-7

.?13

:</,S-

It.,

/7, 3

3". \

358

f O.tf ~

4-1.~

10.1·

lfb.B

?_ ,'7_

Appendix A5 9/12/95 Page 13of15

Comments

[1/4- /'1603

Cf=..,-J.. v.::. I..><. C.. I\_.\......

v'i'G~P~\ L..P

/(

C lc.).:::J v·,Lc. <-.) \~"---'17~"~·1 LP

--y/l•"f''

ei~e

.Sr'<.. l<'...s,~ ~ ~ ~c;,,--.. ~, ..... o

PRESttE LOCKING SPECIAL TEST PROCEDURE Revision 0 PRESSURE LOCK TEST RES UL TS DATA SHEET

Test Description VOTES MPM Title/ u'f/C16 Test#/ ' Date/ TSS Thrust,

Date lbf

r1... IS.:U il:;S" 'Z f L I S-oo rs~ ~' '13..S- f"I AX Zo,o'1 l

S'T,411c 31i s.,. Aili c. fZ.: -Z. l.

~ ISOO LP i .>s ("°'t:;:,. '?:< ' PL IStQ ff.1..'i l't,% f L /5oa P>-1.. 7\ t S$.""I A'l5" zoo5"'f >~-\~•'-

_(q-~'\((_ -ZOCb l.po c ~,,;._A">< r ICi~o't-i

~"T ~ <.\ c.. -Z..DOO <-t-1 _s\4'\1'--.

~ flt= pf,lft , . <'.. :::z:eGi0 ,, ft! ~ -r.>SMA~ l! '1,611

f L PL '-<XiO '1~

LCJOO I'-- -r.ss ,..,...~?< 1.9)2.3

4-3 .S.TA'l re.. l$Sh.A~ L~ S\A-11<- L...o<:::>o -:J~I 0 -L'i "fl[.,

~L~ lf1=:-(?v2 .. .c? o CJ 1;z

. -i.0,190

rsoo '-t-5 yl\,\tC... .A;;;

Si~ l::i:9'-:le T~t>V( .-z..o~o<f I

.()I 1C,..._rJ '/2(,f~(~

1'.c.:/ I - - - - l~

,. :

• 09

Thrust, lbf

'f 8 '1..> -~,,~

sos-

4121-

'/,:,~G. 1017

--3ct-C:.

5.589..

-s3G

511-(0

I(

Prepared~~~ Date: ~137"~<-Reviewed: f.('; a, ) J ,e v tJ

Bonnet Pullout Pressure, · Motor

psi Power, kW

JS2~ /.5'f/

I S'1 o o.·1s--

/ 53b / ,!;;7_,,

.. 2tt>'f CJ,G 19

d'~::.rsb2 Q, 7-:>~ Cl.a£::~{~

190"'2. /,bl K~ ,_ .:Jt>_,~-,

1'11-0 jJGT

TAKE.A:>

1<150 ,,~75~

O("t°u.-::. (<;IV o

,._/f:'Le .:: l<;'d'o o.e:s

Date: tU;fc

Pullot:it Torque,

lbf

Sl.k,

't0

~ .A)CJf

Tlll.'tt0

Q,O

'5".3

-0.[_

~.c;

o.~:

··' Appendix AS 9/12/95 Page 13of15

Comments

Sec T~..s.~ lf.r .for ~~

A"' t:.Jcs• ~ "=lo~..-J -

i'86~ - <!!JfZ- 1':·1-J tcigo ~~-

. (jf'7

• ...

PRESSURE LOCKING SPECIAL TEST PROCEDURE 9/12/95 Revision 0 Page 14of15

C>o1v1e '1-- f ~1G)4( PRESSURE RESPONSE TO TEMPsRATURE DATA SI IEE!T. Appendix A6

VOTES Test #/Date: ll / &J-1~

09 Thrust: ------'&!'"""'. 4 ..... 'lf:..__......_ __

TSS: }. 0

<:./'f (C16 Thrust: /3, /"3 / 13/lO'f I

Bonnet Pressure, 8eAl'tet "1=;111~!::§l111:e 1 °f;

Time psig ' f4,.e\<,·""""' lo;.. J. ..

0 ~e 'ioO

J. G:, soo -

se (00

I:~ bOO_

2:&1 soo

'f :s ( -~ .,

~:'+O .. A:~ h..)~~~ +"ro~ ,P...cl.<t~

'"3CC> "--'-"< o~ h•l'\E. · · · "

-:2..<900

0 f4Go. ;.

I'_> /<too

l~ /Boo •'

:>B 1100

St 1600

.. I j:qS- J~OO

l •. I '1 tttoo ..

· /:3~ )30.0 I

Prepared'61 (j~ Date '1-J1-!irs--Reviewed~ #_(', 6Jll' Date#~

•

•


. p.,.,,.,,< t::11,if6 . PRESSURE RESPONSE TO TEMP ATURE DATA SI IEET

VOTES Test #/Date: l'f( 't""." 13 TSS: / .Q

9/12/95 Page 14of15

Appendix A6

09 Thrust: --~tJ~/fi...._ __ ._ .. , CJcf/C16Thrust: 1£116/ l~,f$f~ r .

Bonnet Pressure, Bonnet Temperature, °F Time psig

r: s-7- l2oo

2: l f . JI OC) ..

2 :3>f /CoV

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900.

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4 :_1<{ 100

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0 1000 '

I 'l J 'tOO

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s~ J/00 .

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2 ·. "26 ,(3t:>O /(

Prepared 'fi~ ' .fl~ Date: .. q-IJ.-'1<:) Reviewed.: ,. PJ!. J!:v,, . .. · Date:.:J./n/ ct·

. . j / .

•

•


9/12/95 Page 14 of 15

/)tJpPl ~ p,-6 ~,;)cl' PRESSURE RESPONSE TO TEMPERATURE DATA SI IEET Appendix A6

VOTES Test #/Date: If/ 4- I 3 TSS: '2.0

09 Thrust: _ _._.Le...-J,I.....,.~---- c l<f C16 Thrust: /'1.i>s7>/ l'i,Bf.'T r .. 1

Bonnet Pressure, BoRnet Temperature, 9 F Time psig

1 :51 J L.oO

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3:5> (O 00

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S9 1;30 ·~ i

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/ 8'66 .. l/J

Prepared:~~ . Yi Y!JI Date: '1-13-'7 ~ Reviewed: - (. · · ate:3/Jl)'b

j

• PRESSURE LOCKING SPECIAL TEST PROCEDURE Revision 0

fp~,;t.r' f ~~t{" PRESSURE RESPONSE TO "FEMPERATU E DATA SI IEET

VOTES Test #/Date: /~ (q-O TSS: '")_O ·

9/12/95 Page 14 of 15

Appendix A6

09 Thrust: _ _.,./d ....... ~.._'fi ___ _ C i'f (C 16 Thrust: q38 3 7/;~ $bf

Bonnet Pressure, Bonnet Te111pe1 atare, °F Time ::- psig

'1: 13 /<eCfO .. 't: "2.0 . /8c;e)

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Prepared:b~~ Date: Cf !Yi 5 Reviewed: '£lC ~j(Date:.:;jfl / ~ . J - ..


PRESSURE RESPONSE TO TEMPERATURE DATA SHEET

VOTES Test #/Date: /6,.l. t.67, 17 >

TSS: . o?. O

09 Thrust: /9~"2 17c-o, /$6 6 . ~ ;;J3y > > }

9/12/95 Page 14of15

Appendix A6

Bonnet Pressure, Bonnet Temperature, °F Time psig ·-

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Prepared:R'6&t -SH:; Date: 'l/!fr Reviewer);;:2C,~ate:~

..


9/12/95 Page 15of15

VALVE DATA SHEET Appendix A?

Valve Source

Type GC\te Vendor /-r:. () We~t • .-.\.... .... (L-f4--6Mf{O F1 JO 1')~~14\-C.

Size '-{-'' '2. roo psi / (:.. r-0°F N <..rt~P lc.-tc.. Model No./Serial No. ,rr,_.,,.-,2GrtY~~ ~ tJ MO~ CYt lf\t. ,-,sooo I AJ,,.--nl~<-

Mean Seat Diameter Stem Diameter Stem Threads per Inch Stem Thread Starts :<. . . Stem Material

'r'tl ~ ... ;\\- 1'11~

A.s.nr.z. C.L~S.S-C

Actuator

Type -Vendor L,...,-.~or~ ... , µ ~"'"' r /1 lc.)c Io. :i..... s \.., c

Size s5-oo ··1 I

Model No. ~

Serial No 2" 5°'-fOf°. I (

OAR· 38.~ . /I

Spring Pack No. 0'f7 11

~\..,o.;OrJ ... ,... Nt> '3B.31'+<1 A I/

Motor

Type Vendor 11.. .... \~Ql\l".O µ~,..( /) ktc.. Meelsl ~Jo. 1:0 No 1 I f:>i..4-Cf -V(.. " RPM 1100. /I

Voltage (AC/DC) AC 11

Start Torque IS- ~-1--'~ .. 11

Run Torque ~ ~~.is II

Locked Rotor Amps Full Load Amps Frame Size M-56 #Jc...f"w'\c.. pl~+c

Rvf\ A/"\D> 2.~ 11

. "!:.., ..... \~ \,·.,...,_ L:.!~ s<. R \-\ II rJ /l

Prepared~"()~~ Date:Cf-1::>4S:-Reviewed:~-: J!i-J/iYDate: 9

o~·~ ~"'.) c ll We~V, Li~~ '2.'f.;voo l).s .JTclcc-u.., S.-+c ... c ~ .. '"""!

09/13/95

Westinghouse Valve Pressure Locking Thermal Binding Test Notes

Test Setup

The Westinghouse valve was received from the stand fabricator and was setup suc0 that the valve could be rotated about the pipe centerline from vertical to 90 degrees from vertical. The valve leakoff line was machined and fitted with a cap which ~ould be removed. The instrument maintenance department calibrated and

·installed the test equipment. Two holes were drilled and tapped into the bonnet to accept a

·thermowell/temperature meter and a pressure transducer/indicator; Due to the small Size of the valve -and the bonnet area and the length of t.he the~mowell it could not be _used for testing.

A high pressure air/water accumulator was used·to pump high pressure water into either the upstream or downstream side of the valve. The accumulator w_ould supply a constant water pressure during unseating of the valve.

Data Acquisition

_The VOTES and MPM systems were used as data acquisition devices for the test. The VOTES system was used to monitor stem thrust, switch actuation, and motor current. The MPM system was used to monitor motor voltage and current parameters. The Westinghouse valve has a solid unthreaded section of stem just above the antirotation device. In this area a Teledvne QSS was mounted and connected to the VOTES system.-· This· QSS was then calibrated using a Liberty C-Clamp located just below the QSS l" below the stem undercut. In this area the liberty effective diameter is 1.229 inches. A calibration was performed at a high valve torque

: switch setting of 2.0 and a low torque switch setting of 1.0. These two calibrations were within 0.41 · ~ercent of ~ach other.

Local leak rate testing

A Local Leak Rate Test (LLRT) was performed in accordance with procedural step E.3 after initial differential pressure testing. This LLRT testing was performed in accordance with plant procedures with a test pressure of approximately 45.6 p~ig. The valve was tested on the upstream and dowristream side at both

• a TSS of 1.0 and 2.0. Results of this testing indicated zero leakage in both directions. The test equipment has an accuracy 0.4 scfh.

09/13/95 Differential pressure testing

Differential pressure tests were performed on the upstream side of the valve at a TSS of 1.0. Tests 6 through 13 were performed at differential pressures of between 460 and 1880 psig with valve factors ranging from 0.33 to 0.19. Valve factors-appeared to decrease with increasing differential pressure. Another round of differential pressure .tests were performed during tests 19 through 25 which' were performed at differential pressures between 505 and 1944 psig. These tests were performed at a TSS of 2.0. Valve .factor-s again ranged between 0. 28 and 0. 1 7 with valve factors decreasing with increasing differential , pressure. ;Appendix A3 lists two disk side pressures used for calculating valve factors. The reason for this is that the pressure decreased from its initial value 5-20 psig during unseating. This is believed to be due to the stern being withdrawn from the valve prior to the disk moving. The pressure just befo~e unseating was utilized for calculation of valve factors. · Differential pressure tests 46 and 47 were performed by pressurizing the downstream sides of the valve. Both these tests were performed at approximately 1500 psid. Valve factors of 0.15 and 0.16 were obtained.

09/13/95 Bonnet Pressure Response

In accordance with test section ~.5 a bonnet depressurization test was performed~ The valve was initially set at a TSS of 1.0 to run this test. The bonnet was pressurized by pressurizing the valve with it open. The valve was then closed and the upstream and downstream sides were vented to 0 psig. This first test was started from 900 psig in the bonnet and pressure decreased from approximately 900 to 300 psig over 9 minutes. The next test was performed with a similar setup at a starting pressure of 2000 psig. During this test the pressure decreased from 2000 to. 700 psig over 4.25 minutes. Static VOTES test #14 ~t the sa~e TSS was performed prior to the next depr~ssurization test. Test pressure started at 2000 psig and decreased to 800 psig over 5.25 minutes. The. rate is greater at the higher pressure and decreases as pressure decreases. Static VOTES test #15 was performed at a TSS of 2.0 prior to the next depressurization test. Test pressure started at 1980 psig and decreased to 1780 over 5 minutes. During this

•••

09/13/95 09/15/95

09/15/95

testing water could be heard wheezing from the valve seats as pressure decreased. In an effort to ensure that water was leaking past the seats a similar test was performed, however, when the valve was closed to pressurize the bonnet the upstream and downstream sides of the valve were left pressurized such that the upstream and downstream pressures were at bonnet pressure. During this test pressure decreased from 1730 to 1710 psig over 1.75 minutes. This test indicated that a substantial amount of pressure loss was from leakage past the valve seats. Appendix A6 was modified slightly and used :to document this testing.

Pressure locking testing

Pressure locking data acquisition started 0ith static test 2o at a TSS of 2.0. Each of these pressure lock tests were perform~d by pressurizing the entire valve

.with the disk off its seat and then clos1ng the valve and depressurizing the upstream and downstream sides. The bonnet pressure was then recorded with an initial value and an unseating value. Prior.to each pressure lock test a static test was performed at the specified test pressure. These were performed because the valve bonnet was pressurized by closing.the valve against pressure and then bleeding off the upstream and downstream sides of the valve. VOTES tests 26 through 45 were performed at bonnet pressures between 500 and

-2000 psig.

Pressure response to temperature

During this test. the valve was closed at a TSS of 2. 0. High temperature heat guns were used to heat the valve body· and bonnet from the outside. During this test heat guns were directed at both the valve body area and the bonnet area. Temperature of the bonnet water ~as measured with a contact temperature meter placed on the outside of the bonnet away from the heat guns. The bonnet water temperature is assumed to be approximately equal to the outside bonnet temperature. The test was started at a bonnet pressuie of 102 psig and a · temperature of 75.8 F. During this test, stem strain was also monitored to verify if stem growth was contributing to the seating foice. Time was not

·monitored for this testing. Appendix A6 was slightly modified and used to document this testing. During this test bonnet pressure initially increased.with temperature, then decreased for a short time after which it continued to increase. This test indicated a pressure increase of approximately 2 psig per degree F.

Thermal binding test

The thermal binding test was performed after the valve was heated in accordance with the previous pressure response to temperature test. After heating of the valve, it was opened and closed during VOTES test #48 performed at a TSS of 2.0. Thrust numbers from this test indicated that the sensor had heated and was not providing accurate thrusts. The valve was cooled to ambient conditions and another static test #49 was performed. This test indicated a pullout thrust of 2239 lbs. The increase 1n pullout was compared to static tests #18, 26 and 27 which were performed at the same TSS. An average pullout value was taken from these three tests of 1906 lbs which yields an increase. of 333 lbs. The valve bonnet temperature measured 263 F and the body temperature measured approximately 172 F around.the bottom half centerline. The starting valve body and bonnet temperature was 76 F.

Test Summary and Conclusions

Local Leak Rate Testing

Local leak rate testing was performed in accordance with station local leak rate testing methods. The valve was tested from both the upstream and downstream side with each side being tested at two final closing thrusts (TSS of 1.0 and 2.0). This testing indicated zero leakage from both sides of the valve at both torque switch settings. Therefore, the valve was leaktight to '" within the accuracy of the flow meter or 0.4 scfh.

Differential Pressure Test

The first set of-differential pressure tests were performed from the upstream side of the valve at differential pressures of between 460 and 1880 ·psid. During analysis of the pressure locking data it was discovered that the seat diameter which was used for calculating open valve factor was the inner seat ring

· diameter and not the mean seat ring diameter as is used for input into the pressure locking calculation~. The actual mean seat· diameter was 2.001.inches rather than 3.445. Therefore, using this diameter the valve factois range from 0.13 to 0.21: The second set of differential pressure tests were pe~formed from the upstream side of the valve yielding corrected valve factors in the 0.12 range.

Pressure Locking Test

Pressure locking tests were performed by initially pressurizing the entire valve with the disk off the closed seat. The valve was then closed to trap the pressure in. the bonnet· and the upstream and rlownstream seats were vented. Prior to each· pressure locking test a static stroke was ·performed with the entire valve pressurized to the test pressure. The bonnet pressure was then recorded with an initial value and an unseating value. These were performed because the valve bonnet ~-?.as pressurized by closing the valve against pressure and then bleeding off the· upstream and downstream sides of the valve. These static test values were used as. input into the pressure locking model. Comparison of the predicted pressure locking . forces to the actual tested values are summarized in DOC ID#DG96-000078.

Bonnet Pressure Response Test

The valve was initially closed with a static seating thrust of approximately 13800 lbs. The valve was pressurized to a pressure of approximately 1000 psig and closed and both the upstream and

downstream sides o~ the valve were vented. When the valve depressurized to 900 psig the test was started. The bonnet depressurized to 300 psig at a decreasing rate over 8.6 minutes. The next test was performed at the same TSS, however, the starting pressure was 2000 psig. During this test the valve depressurized to 700 psig at a decreasing rate over 4.25 minutes. A repeat test was performed starting from 2000 psig. During this test the valve depressurized to 800 psig at a decreasing rate over 5.25 minutes. The valve was then set to a TSS of 2.0 and a measured final thrust of 19870 lbs. The bonnet was pressurized to 1980 psig for an initial pressure. During this test the valve depressurized to 1780 psig at a relatively constant rate over s:o minutes. The next test was performed to verify where the leakage was occurring. The valve was pressurized and closed at the same TSS, however, the upstream and downstream sides of the valve were not vented. The depressurization rate was substantially slower starting from 1730 psig depressurizing to 1710 psig over 1.6 minutes. This test indicated that some packing leakage was occurring but this was a small amount of the total. Leakage was

. not visible through the upper packing but may have been occurring through the capped packing leakoff .line. It should be noted th~t the .packing load on this valve was higher than the design value of 1000 lbs per inch of stem diamete~. This testing indicates that under bonnet' pressurization/depressurization scenarios the seats and packing do leak at a substantial rate even with a valve that measures zero leakage vi~ a LLRT.

Bonnet Pressure R~sponse to Temperature

During this test the bonnet was initially pressurized to 102 psi~ and the upstream and downstream sides of the valve were depressurized. Heat guns were used to heat the valve and bonnet and a temperature probe was used to measure the bonnet temperatur~ externally. The external b6nnet temperature was assumed .to appro;.:imate the inte.rnal fluid temperature. During this test time was not monitored with temperature and pressure due to the length of time to heat the valve. Bonnet~pressure started at 102 psig {arbitrary point) and bonnet temperature started at ambient 75.8 F. Initially pressure increased.then decreased for a short time with constantly increasing temperature. From this point bonnet pressure increased at an average. rate of approximately 2 psig/degree F to a pressure of 201 psig and temperature 263 r. The initial pressure decrease is believed to be due to expansion of the metal and bonnet- area due to heating.

Thermal Binding Test

This test was conducted subsequent to heating the valve from the bonnet pressure response to temperature test. Although this test was not part of the procedure it was done to gather additional information. While the valve was at 263 F it was opened and

•

closed and then allowed to cool. A VOTES test was performed during this stroke, however, the thrust values were found to be invalid due to heating of the thrust/torque sensor. After cooling of the valve to ambient temperature a VOTES test was performed with a pullout thrust of 2239 lbs. This final test was compared with static tests performed earlier in the testing sequence. The average pullout from three static tests performed at a similar TSS were 1906 lbs with final thrust values from each of· these static tests being within 0.48 percent of one another. This is an increase in pullout thrust of 333 lbs or 17.4 percent with a differential temperature of approximately 100 F using the lower valve body temperature as a valve temperature. · This increase is much less if .the valve bonnet temperature is used .

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••• Westinghouse 4" 1500# Class Gate Valve

Measured Pressure Locking Load vs Predicted Load

•

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Bonnet Pressure vs. Temperature

•·

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90 110 130 150 170 190 210 230

Fluid Temperature ·(F)

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/

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•

Attachment 4

ComEd Response to NRC Request for Additional Information on ComEd Pressure Locking Testing

Documents

WESTINGHOUSE VALVE PRESSURE LOCKING SPECIAL ...SPECIAL TEST PROCEDURE PRESSURE LOCKING 4. Differential Pressure Test a. With the valve open fill the specimen with water . Revision