ML20086S958

From kanterella
Jump to navigation Jump to search
Issue 1,Rev 1,to SI Accumulator Discharge Check Valve Full Stroke Test, Test Results Rept
ML20086S958
Person / Time
Site: Beaver Valley
Issue date: 10/31/1990
From: Cherry B, Jason West, Robert Williams
DUQUESNE LIGHT CO.
To:
Shared Package
ML20086S924 List:
References
2BVT-01.11.03, 2BVT-1.11.03, NUDOCS 9201060077
Download: ML20086S958 (9)
v • d • e


Text

{{#Wiki_filter:e BEAVER VALLEY POWER STATION P Unit No. 2 t Test Results Report ?JLVI 01.11.03 iting 1 grylainD 1 htt_bt Cen&Ld 10/M/"O TITLE; SI Accumulator Discharge Check Valve l'ull Stroke Test JECi! Spic PILEPENCE: 4.0,5 l [.URPOSE1 The purpose of this test is to verify the full stroke capabilityoftheSafetyIn{ectionAccumulatordischarge check valves, (2 SIS *141, 14, 145, 147, 148, & 151), in accordance with ASME Section XI, Subsection Ik"6 3520. IIII.EE5 ULT 1 pt) Test Conpleted Satisfactory ( ) Unsatisfactory >d The following Problems were encountered: (See Attached) bd Corrective Action Taken : ISee Attached) PQ Recom.nendations : fSee Attached) Prepared by: hqg/ ,.f[ Date M / 8 / j d REVIEW T&PP reviewer: g Da te J O_/M,/ cy,g-hQProcedureProperlyCompleted& Satisfactory ( [)() Comments _04.v w ofsca b t* e W In ie<Iv i c M N cPV.}) / OPEd cl bd t>o y [2.its*t M A.BSc.] b Aesta,d;5lb l l-APPROVAL Level III: g/ff,/jh/g Date 1 / 1 /jf j l bd Test Results Satisfactory & Approved % Comments 0$w Niter' h?wbas IM/)xM$ art bln bHAsl n1 /fjt}/> /tivd e 4 rY (5 SPN Leve:/n l Distribution l ) General Manager NOS Unit 2 Ops, Superv. Senior Engr. x' General Manager NO .'x.1 .x; T&PP Superv. (3) NED DCP File Tech. Serv. Manager

x' Principle Engr. (2)

DCP. - x; Director T6PP-NED EQ Cord, Direct.or Trng/Sitn. 930106007'7 911227 PDR ADDCK O*JOOO334 p PDR

s TRR for 2BVT 1.11.3 gucHMrNQ t i on September 10

1990, the three (3) Unit 2 SI Accumulators were blown down to the RCS in order to stroke test th9 six (6) discharge check valves.

[251S*141, 142, 145, 147, 148 & 151] per the requirenents of ALME a Section XI and the Unit 2 IST Program. During the test, the pressure in the accumulator under test and the pressure and levels in the RCS pressurizer were monitored. Initial system conditions were similar for the three (3) tests: the RCS was pressurized to approximately 25 psig with 106 15% level in the pressurizer. The in the 21A and 21B accumulators was approx. 125 psig greater than pressure RCS_ pressure and the 21C accumulator pressure was approx. 100 psig greater than RCS pressure. 1 Per the acceptance criteria in 2BVT 1.11.3, full stroke is verified as -follows: 1. The actual peak flow rate calculated from the change in pressuriser level is greater than the minimum flow required to full strcke the valves. As determined using EpRI Application Guideline for Check Valves, EpR! NP.5479, January 1988, the i minimum flow required is 2481.6 gpm. 2. The actual pressure vs time curve for each accumulator blowdown i when compared to the calculated curve falls to the lef t and below the calculated curve. -For the first criteria, actual peak flow rates calculated for the three -(3) blowdown tests were 9120 gpm for (25!S*TK21A],,9600 gpm for [2 SIS *TK21B) and 8400 gpm for [2 SIS *TK21C]. All flow rates are well in excess of the EPRI minimum flow value. The differences in flow rates can be attributed to different starting pressures in the accumulators and test limitations in collecting data on the ERTCS. The flow ratos; were also compared with the data from the IR blowdevn-test. - The differences can be attributed to different otarting pressures -and the differentL RCS conditions; for the 1R test the RCS was vented and for the 2R test, it was pressurized. The flow rates are comparable. 2 sis *TK2iA 2sts+TK21B 2 sis *TK2ic IR 9432 8496 10130 2R 9120 9600 8400 - The largest-change in flow rate occured on the 21C accumulator. The high flow rate during 1R was due to the increased vent path size and the lower flow rate from 2R was due to the lower test differential pressure. For the - second criteria, actual accumulator pressure was plotted vs time and compared to the calculated (computer model) P T curve generated for each, accumulator blowdown. The actual pressure data for all six (6) channels was. corrected based on the post test calibration of the pressure transmitters, because -all of the transmitters were found to be out of-calibration during the performance of their regularly scheduled MSPs, 's-,135 g-mp-m- -r --vmM-4%e heti---m=- P

  • -T****"*-

T+-W^r**7'W f-'WW'W1" 88 4T&F -M

    • t-

t -9T'r Y

  • TuP'-*MT*'

TtreW4d'* 9 'ry'vT't'"Fr T'** F 'WW-'

i Figures 1, _2 & 3 (attached) are the corrected actual and calculated P T curves for (2 SIS *TK21A, B & Ci, respeerively. Based on these figures, the actual P T curves for all three-(3) accumulator blowdown tests fell to the left and below the calculated P T curves, as required. In addition. _the 16C Engineer recomnended that the " average" of the two pressure channele should also be plotted in order to minimite the instrument error. ligures 4, $ & 6 are the P T curves using the " average" of the pressure channels. The " average" P.T curves also fell to the left and below the calculated P+T curves as required. These curves -vere compared to the curves generated during 1R, Due to the different RCS conditions, however, the shapes of the curves are not comparable. Vith the RCS pressurized in 2R, the pressutes in the. accumulators and the RCS equalized more quickly than with the RCS vented in 1R, The total pressure drop was greater with the RCS vented and the duration-of the blowdown was approximately 20 seconds longer. Therefore, in the future, results from tests performed with the RCS vented will be compared against the IR test results and the curves from testa performed with :the RCS pressurized will be compared with the 2R test results to determine check valve degradation. In the future, if scheduling permits, calibration of the accumulator pressure channels, as a minimum, should be completed prior to the performance of this test. Also, the " average" of the pressure -channels should be used to obtain the actual pressure readings if both channels are available. In conclusion, the SI Accumulator Discharge Check Valves, (2 SIS *141,

142, 145, 147. 148 & 15?,), have been full stroked open in accordance with ASME Section XI and the Unit 2 IST Program.

=-... 9 1 4 g&p AG, w W%* g 43W 9 L

x!. F t Ct'Rt 1 I_-_._. _...w. i - J_ m. + r 1 + nV - -+ 4 w. r fl L' ..r.-..,. s An T e- ._.-e-_ i 4.-- Actua1 and Ca1eu1eted ( .i Accumulator Slowdown + 1 -- 1 2515*TK21A L. ~~~~ .. + _ - - n?X. - Actual Inittels - pi ~L dV ~ Calculated Date M. # '"~ -+- {- s., -- -{ - p_ I .v_ c. 1 4 _i o, i ..:WU. k. A 1 .e. ., s. I g. y. 1

s _

- + - w. -\\ _ i. in 1 1 1 I" _1 1 I 1 I m I m. .g -..s 1 ~ 1 1 iii I . r i.v w e.. y. ..h... R i M I i - ___s. g i__.

n

.L... . -. +. .g ... se.,. 1JAA 11 b. .. ^ m... .M -

p. m.

e m_. 3g. C I 1_: I 1 1 i, I 1. 1 .L. e I 1 I 11 --e. = I L' l 1 g r g 1_ ...t 1 r ..4 \\ .. 3, l t ~ ..._..UV_- i p e p . 4-.. ,_ + .. +.. .._t p =_......... p.= r e_. e 4 .e.... l .u m s_... t l p + a e e me e e m /0 Jo a t ec > 9p ggggg g -M-REVIS10N 1 j y.. ]

38VT 1.11.3 ? ff-P tette r ym i .r. _ ~.. p 7 L 3 7 _ +.._. - + .-e.- 7 m n , p'

  • - ~ +

-_+--.~.___y_ i .L1 ^ 1, ii ~. Actual and Calculated T 3 Accumulator Slowdown N -* N -- i 25!5*TK218 4. __-- { or d-O Actual tnie t.l. %). ITV 1 {j " O Calculated oste /0.M/) ..c.. .i g n_

s. _

I, ] f 4 g g 3 3- _.p iss i i L. 4 v_ u i w u \\,-_ _. 1 ---v _u = w g -4 n u m j q u n-r n i A E J //e \\\\ u y .c _. _g _.5-g g ... L. - .D 2AA ' i, g <-v .._.p....._ i i \\I I 1 Y I i 1 1 i I ~~ t 1 i\\ l Qi i nl IV \\

  • =W g

g i i ..T j g. v b A g.,. um. ~ ~ :. " Mi .~.' ;; *_ : *.D eI:';# N t E S D J IMcuer i nA nI ...... W.'L%iUAr..T.NkiiH AfEWT t 7.i.. - ~" '... '. ' ' T.. ~. ; TME AMCS~Rk.L20'.x. m . __ p. iv. ca.... 3 _o. m. p /d -37 tine ( ec) '/O Issus 1 40 do REY 181tst 1

28VT 1.11.3 ,__...........g___. _... _. ~ 4._.- ..v _. - - - - - I i r.__g ~ < - n-. w i i t-. - _..j . p j,r a vv i - -t- - Actual and Calculatad _n Accumulator Slowdown 4 3 2 SIS *TK211 b Actual Initials M M , w c Q 4--~~ C Calculated D a t e ]$-j.98 ""~~. k---

    • '==="
  • g-g l

.e.- O*

n. '

.1 ~ >\\ 3 0 El i sa _ er -=4 .3 ** _-i 1,,---- v_ j 3 n ,'11 V_V. L \\\\ 11 4 1 u 11 t. \\\\ j 2 1\\ \\\\ - * ~ " * ' gn g, 4 . IV \\ \\ g g i .~~ S z U .AA.. _ I. 4mn 1 ..y (_ 1, 4_.. 1 g o.. i \\ \\ 7 w t g 9 .y A I\\ l i I L/ 1Ld 7 I .._ i. 1 Y, =\\, _. - _. = 1 \\ \\- IFTab X ~ ~~ 'r. growls.To AccouW .X.. J A \\ N fMfn %'U(4U N DIEWMNT og .j p..- ..-...p.... .. r.. ... ~, s .e r e rn %.ver .y

e..

.6.. t .t. /0 -38 Ttme (sec) 4'O ISSUE 1 D REVISION 1

~. ricUu o _ IIVT 1.11.3 t 4. ?---. ,1 1 ~ - r..... 7; w - _c - - _ + - -._.4 _4 yy 3 i. i Actual and Calculeted __1 -I I Accumulator Blowdown u 1 .n %+. 2515'TK21A ~ ,, rg. K - ~u O Actual Initials .,. ld. m

  1. Cy-

>v- --\\\\-= t,1 i - @ Calculated D a t e _ //). ? - 70 ~ s 11 4 H I H N H_ I a. .~ 9 .~e.. C. - =. l .4 O ,,.Ls2X L. U g g., j g g3 p. "3 u i y I 5 5 ..J y.' 1] _~Q. 1 ina L(.E e __.e -_ l 2 ..a _ 1 m g e I R ish w w . v r.. t .p.. 3 - p.__ g 1-w T AL ....v,... U I o..- _.-4. \\ ... as... LI

== snn a\\ Y 5.! Y . \\\\ 1 1 1 \\ .-...4. I 1 1 \\ n \\ \\i i _. ~. ~. ~ ^ 1 111 i-e. Iv 1 ' A 1 1 3 \\. y. i 1 ,...e D's.. t i ry A .I ......Li v I ( .L L. l ..e.... q. i L,W g' 40 I m (soci @ gggg 1 34-O REVISION 1 e

) 1f. F f t tra r i vi 6 r . p..._ ~.. y _i - +. _ -. - .L M I i j " If ~_ u ] i +== : 7,,,7 ______p- -- _ +.-. - -._ - ; u ___ I __7 Il ~ 11 I 11 gg _n Actual and Calculated l', Accumulator Slowdown = -- Wy - 11

9 u

i 25tS*TK: 15 i i ,,,-=. J, - -\\ O Actuat t a t t t a t. JfW.. '~'"[$ j'y D catcu1.e.4 e.t. m. o af; ..c \\.. \\,\\,-

a. _

y _ r_ y -tie- .__...y .e ,u -~ _ ei im y_~ """FI I 11 7 6 h 1 1 $ s. A ( _4 m r= r As 1 R t ,9 \\ A D-- m 11 .,s. I 1 (( 1 w I \\ s 1 1 n ~** .g _.._i i ,u .4.- W

  1. . E.

I I 1 1 \\ \\ \\ \\ .p..,.. g t 1 1 i 1 L 1 L i i ni d a_ i 1 7 IF 1 1 1 \\ r i, .i 1 \\ \\. I \\ ...h. .....ggmg "~ ~

'._,..' : '.' 2 : *.J. 4' SaQGR ff5-~Acc.4um-n

_ av ....... m a:.mzw.zuuwm ..r .... 4DL e,d!?kSr. . __p p.. .....r. .....e.

b.......
g...
l. V.

.. e .,..e. _= - ~ "*~ s. .r... i /0 ' 37-Time (sec) YO 1855 1 40 Jo gggggga,g g 4

f ~ 28VT 1.11.3 i rt. ricunn & I 1 e -i i -.-.-~~~--..4.._.-. -"~ 1 - - c. _ -. - .. r 1 4.. w j ,,m e-- - - _ ITV l' Actual and Calculated Accumulator Slowdown _6 r I dy 25tS*TK21C O Acco.t intitat. 34d JC-3 O Calculated Date 16 9.'/d ~' e-. c o-L- o., y } r. 1 y- ---.a n 4, s v-u t __.4 II p j ,,s VI I I L! n M. y. 4 an u~ h. H 3 R ~ H n C .H

s. ja u

-t .vv p 7 g - u .\\\\. y m Q ......tv \\\\ ~ I \\ k i 1 1 i 1 \\ l g L g ~' ~ g. \\,,M \\. +-. y Uli 1 1 1 \\I i i ~~MATi vnmj;;a,5)lMTEb i 1 1 x 1

4. 355.qNEAL.TD AC40W 6JF i t

ru B 7 7.. "MWM WWw i n.7 1 ....m. m.... .\\ _.p.... ,...p.... i I a .V U. . M.... ..._. p ...w. 3 ...L..... .r.. c.. fg a 38 Time (set) fd 1330s t (O Jo ggyggg(y g t - - " - ' - - ' " - - - - - - - ' " " ' ' - - - - - ~ ' - - " - - - ~ - - ' ' ' - - - - ' ' - ' - ~ ~ - - - - - - - ' - - - - ~ - - - - '}}

Retrieved from "https://kanterella.com/w/index.php?title=ML20086S958&oldid=4347012"