ML17252A452

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Report of Abnormal Occurrences Per Section 6.6.A of the Technical Specifications Primary Containment Local Leak-Rate Testing (1975 Refueling Outage)
ML17252A452
Person / Time
Site: Dresden  Constellation icon.png
Issue date: 08/14/1975
From: Stephenson B
Commonwealth Edison Co
To: James Keppler
NRC/RGN-III
References
BBS Ltr.#500-75
Download: ML17252A452 (16)
v • d • e


Text

~,:.-. ~~ _d **Q commoa*llh Edison r;..-

,~

One First Zna1 Plaza, Ch,icago. Illinois Address Reply to: Post Office Box 767 Chicago, Illinois 60690 BBS Ltr.#S00-75

~1r. James G. Keppler Regional Director Directorate of Regulatory Operation-Region III

u. s. Nuclear Regulatory Connnission 799 Roosevelt Road Glen Ellyn, Illinois 60137

'legufa~if1 Dresden Nuclear Power St_§.yion R.R.#1 Morris, Illinois 60450 --~-

August 14, 1975

SUBJECT:

  • REPORT OF ABNORMAL OCCURRENCES PER SEX::TION 6.6.A OF THE' TEX::HNICAL SPECIFICATIONS

References:

1) Regulatory Guide.1.16 Rev.* 1 Append:LX A
2) Notification of Region III of U.S. Nuclear Regulatory Commission:

~=i!~l~u!bers:.See.Table 1.

.. *~,

V)I~

'v~. * "'(.

See Table 1

~/

0

~~~~o

"('~

SAa

~

3)

Report Number:

'. I:.~

AUG 2 7 1975 ):;

. ~

Moil Seclion Docl:e1 C~n

~

/'-

6045 r.*

Occurrence Date:

See Table T Report Date: August ].(~, 1975 Facility: Dresden Nuclear Power.Station, Morris, Illinois INTRODUCT[ONzn During *the recent refueling outage of Dresden Unit-3, the primary containment was checked for leakage by performing local leak-rate' tests on the main steam isolation valves, primary containment isolation valves, double-gasketed seals, electrical penetrations, and bellow seals. A list of all tests performed and their results are given in tables 4-8.

The total leakage from the drywell through testable pene-trations and isoiation valves W.~s.~2129.64 SCFH (100.163~scl1]: excluding the feedwater check valves) for the "as found" condition.,The initial leakage through the double-gasketed seals was 88.42 SCFH.

The through-leakage is determined by dividing the total leak rate by two unless the leakage through individual valves or seals is known.

In that case the through-leakage is considered equivalent to the minimum valve or seal leakage since they are in series. As of the date of this report, the thr()~_gh... lea.lcage is 81.0 SCFH from the testable penetrations and isolation valves, and 9. 71 SCFH--from the cfouble..:.gasketed seals*. These values may change since several

  • tests must still be completed on various double-gasketed seals and isolation valves prior to unit start-up.

Seven tests yielded leakages in excess of the Technical Specification limits. These tests are discussed in the ensuing report with the exception of the drywell bellows test line break (previously reported on April 25, 1975 in report no. 50-249/75-19).

9188

~-

e* :.. *..

It' IDENTIFICATION OF OCCURRENCES While performing local leak-rate tests for Unit-3 during its recent ref'ueling out-age, seven.tests exhibited lefl.kages ~bove the maximum allowable limits. These re-present abnormal degradations of pril'.tlary.contaixlment integrity. The te!st results.

are given in.Table 2.

CONDITIONS PRIOR TO OCCURRENCES Unit-3' was in the 1975 ref'ueling. outage at the time of each occurrence.

DESCRIPI'ION OF OCCURRENCES

  • All of the.leak rates were determined.by using the pressure-decay method at 48 psig.

Report Nos. 50-249/75-20 and -21 I

At approximately 1500 hours0.0174 days <br />0.417 hours <br />0.00248 weeks <br />5.7075e-4 months <br /> on April 22, 1975, feedwater check valves 220-58A and 220-62A on the."A" line were leak-rate tested by pressurizing the.section of pipe between manual valve 220-57A and the check valve.

Since a waterhead was present on: the reactor side of.the 22Q-57A valve, it was assumed that all leakage was through the check valve. This assumptio~ was verified by means of vent lines located upstream of each valve.

Th~*.tests revealed a leakage through the 220-58A and 220-62A.check valves of 103.5 and 323.4. SCFH respectively.

Report No. 50-249/7~22 At 1600 hours0.0185 days <br />0.444 hours <br />0.00265 weeks <br />6.088e-4 months <br /> on April 22, 1975,.the vent line for the drywell and torus on the pressure suppression system was tested for leakage by pressurizing the section of pipe between primary isolation valves AO 3-1601-23, -24, -60, -61, ~62, and -63~

A leakage of 34.75 SCFH ~as.found.

Repcirt No. 50-249/75-23 At 1000 hours0.0116 days <br />0.278 hours <br />0.00165 weeks <br />3.805e-4 months <br /> on April.25, 1975~ the torus-to-~ell vacuum breaker 3-1601-32B was leak-rate tested. The vacuum breakers_ have a double-gasketed type seal. The le~ test simultaneously checks:

1. One ( 1) *cover flange.*
2.

Two. (2) shaft seals.

3. :Two (2) shaft seal flanges.

A leakage of 113~6 SCFH was found.

Report No *. 50~249/75-29.

At 1600 hours0.0185 days <br />0.444 hours <br />0.00265 weeks <br />6.088e-4 months <br /> on May 29, 1975, feedwater check valves 220-58B and 220-62B on the "B" feedwater line were leak-rate tested. The tests were identical to those per-formed-on-the-"A" feedwater -check valves *. The tests.revealed.. a.leak rate througll_

check valves 220-58B anq -62B of 1926 and 9273 SCFH respectively.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE _ (De~i~ Cl::Il<i _ _Qomponent Failure)

Report Nos. 50-249/75-20, -21, and ~29 The failure of four feedwater check valves can be traced_ to the same pro.blem.

They were found leaking between the valve seat and valve body; the "0" ring used "Qetween ~the s.eat and body no longer gave a good seal *.. This "0" ring fits

I TABLE I Report Region III Notification Drawing Occurrence Report

  • Number Tele hone Tele am Number Date*

't:Date 50-249/75-19 Mr. P.

Mr. J.

M-95 4-16-75 4-25-75 4. 4 50-249/75-20 Mr. H. Dance.

Mr *. J. Keppler M-347

'4-22-75 S.:.14-75 4-2 1 OOh 4-2 1 40h 5~'.""249/7~2*1 Mr. H. Dance Mr. J. Keppler M-347 4-22~75 8-14-75 4-2 t OOh

. 4-2 1 40h

'59~21.+9/75-22 Mr. H. Dance Mr. J. Keppler M-356 4-22-75 8-14-75 4-2 1 OOh 4_:2 1 40h 50-2:49/75-23 Mr. Tambling Mr. J

  • Keppler*.

M-356 4-2§-75 B-i-4-75 4 1. Oh

. 4 1600h 50.... 249/75-29 Mr.* P.

Mr. J *. Keppler M'."'347.

5-29-75 8-14-75 6 0 into *a groove cut in the valve s~at. When the seat is bolted to the body, the "O"_

ring is compressed to form a seal. If the check valve closes during a.reactor scram precipitated by the_shutdoW!l_.of :the reactor feed pumps, a.pressure diffe~ential of almost 1000 psi will exist-acrciss the valve.

This pressure will* tgnd *ta:

compress the "O" ring further *. However, when this pressure differential has been removed, the valve seat will return to its original *position while the 0" ring remains in its compressed state.. Subsequently, a gap will appear between the valve body and the "O" ring. Apparently the 110" ring is relatively inelastic,

  • "rebounding" only part of the *ruistance it is compressed.

Report No~ 50~249/75-22 Valves A0-3-1601-23 & -61 leaked.through the valve shaft packing; apparently

.caused by settli:rlg of the packing.

Report No. 50-249/75-2-3 About 97% of the leakage was through the rigtit shaft seal of drywell-tci-torus vacuum breaker* 3-1601-32B.

The ~pparent cause of the failure was a.:.failed packing and.a fl~ge* "O" ring b8:Ild on' the right-hand side.

ANALYSIS OF OCCURRENCE None of.the leak-rate test failures jeopardizeJi' the-h,ealth' and safety,_of plant*

personnel *or the public.

Any leakage past* the*'"f'eedwater che.ck :~alves'would have been contained wi thiD.".ihe feedwater' piping/ 'The seb~nd~ry containment' including the standby gas tre~tment 0 ~ystem, -wa$ availaple *to contain :any le.a.kage into the react<;>r b~lding ~~to~ph~r,ed ~<._. ~, ::..:_:' r*i J ;; __ : ]',i J

~

Repo~t'~fu~~_,50-249/75~2ff,:.~21 ;~~-*-29~ *: :,_..*. :

~:;.*: *::,'. ::*;--:,_.,.,~ ~-* '~.

Altho'-!-gh the.feedwater ch.eek valves* had large* leak rates at* 48 psig, they were

.still functional and would have seal"ed under a* high differential pressure.

In the event of an accident such as a pipe br.eak, a high diffe;r-ential pressure would exist across the valve,. forcing the valve seat* to seal ag.ainst the valve body._*

Report N~-*.56-249/75-22 and ~,?3" The leakages through the valve shaft. of valve 3-1601-23 and the right shaft seal of vacuum breaker*~1601~32B were contained within the secondary containnient structure.

Their combined leakage was below 150 SCFH, well within the_capability of the

.. standby ga~. treatment system~

CORREDTIVE ACTION.

The failed valves and the vacuum breaker were repaired.

The leak-rate tests

  • perfornred-after--repairs~-'hatl
  • be*en- *complet:ed*- showed-th-e -'-leakages* ta-be--we11- *within--* --*- -- -- --- ------*

Technical Specificati*on* f-imi ts.

T~ble 3 gives the leakages before and after repairs:

TABLE 2 LEAK-RATE TESTS EXHIBITING EXCESSIVE LEAKAGES Report

. _,eakage Found Max Leakage Affected 3CFH@48psig Allowable SCFH@48osig 50-249/75-19 I X-105D.

Bellows Seal Bellows Main 380.

'29 *.381 t

Seal Steam 50-249/75-20 X-107A Pipe Be~we~n

  • Pr~ar;y: ;-*

Feedwater 103.5

  • 29.381 I

valves Isolation I

3-220,_;_57A &

    • Valve 3-220-58A I

50-249/75-21 I

X-107A Pipe B~tween

. Primary_..

Feedwater 323.4 29.381 valves Isolatiol).

I i

3-220-5.?A &

V~lye

  • ~220-62A I

50-249/75-22 I

Pipe :Between Primacy 34.8

' 29.381 X-125

  • Pressure an:d Valves Isolation Suppression X-318 3-1601-23, -24.,

Valve

...:..60. -61. & -63 50-249/75-23 i

X-301F Valve FI.ange*s

  • nouble-Pressure 113.6 58.763 on 3-1601.-32B Gasketed Suppression

.Seals X-107B.

Pipe Between Prima~y Feedwater 1926 29.381 Valves

  • rsolat:lon
  • . 3-220-57B &

.Valve 50-249/75-29 3-220-58B X-107B Pipe Between Primary Feedwater 9273

,29.381 Valves Isolation 3-220-57B &

Valve 3-220-62B

Valves or Seals Tested Bellows Seal X-105 D

-24, -60,.-61, -62, and -63.

  • Torus Vacuum Breaker 3-1601-32B q~,

Report Nos *. 50-249/75-20, -21, and -29

-~

Table 3 Initial Leakage (SCFH)

  • 264.5
  • 103.5
  • 323.4 *..*

1926

  • 9273
  • 34.75 *
  • 113.6
  • Leakage.A:fter Repa~rs (SCFH) o*.o 1.54 1.04 3.40 0.997 23.72 o.o The check valves. were cleaned and*new "110" rings and upper seal rings were *instal-led. To prevent a recurrence of this nature~ the valve seat groove which receives the "0" ring* was remachined from a depth.of 0.165 inches to 0.190 inches. Deep-ening the groove*allows metal-to-metal contact between the valve seat and body.

After the valve seat has been installed in the valve body, the metal-to-metal contact will prevent any rurJ;her compression of the "0" ring, allowing the seal to remain intact even after the valve*has experienced a high differential pressure.

Report No. 50~249/75.~22 The valves' packing bolts were.ti~tened, signific~tly decreasing the leakage.

Report No *. 50-249/75-23'.

The stuffing box and flange "0" ring band on the right-hand side of the vacuum breaker were replaced.

Fee~water check valve *leakage has been a recurring probTem for both units 2 and 3.

All four check valves have leaked excessively each time Unit-3 has entered a re-fueling outage.

During the unit's first outage in the spring of 1973, the feed-water check valves leaked past the metal seal ring between the valve seat and body.

The metal.* seal ring was then replaced by a "silastic" silicone rubber *. When the

. 'feedwater check valves failed leak-rate*testing during the 1974 refueling outage,

_the silicone rubber "0" rings.(which had dissociated) were replaced with the carbon-flouride compound rings' presently in use. Unit-2 has had similar "0" ring problems.

Report No. 5~0249/75-23

. Tliis Tsthe :first tirrie any* seai or fla:Ilge failures have oc~W.;ed on torus-fu.-dry,:;....

well vacuum breakers for unit-3. Unit-2 vacuum breakers did not experience any flange failures until November 197~. There were five failures attributed to*pack-ing leaks at that time.

Report No. 50-249/75-22 On;Ly two previous failu.+/-:es have occurred on the torus vent line for units 2 and 3.

In November, 1974, butterfly valves 3-1601-23 and 3-1601-24 experienced leakage across the valve seat, apparently resulting from impr-oper assembly of the valve operator.

--7.:..

Butterfly valve failures have mainly occurred on drywell and torus iherting and purge lines.

BBS:ELS:jea File/NRC

(*i) 6 TAB,Lc 'f

  • LOCAL LEAK RATE TESTS PERFORMED DURING THE UNIT 3 REFUELING OUTAGE OF 1975

.TYPE* OF. PENETRATION:. 'Mti1h. 5tfjM I5;/qfi';J;,. Vi/:Vt~

.. P/p1/i)

INITIAL INITIAL THRU FINAL FINAL *THRU TEST PENETRAT l*ON '"

(J e /vvet..

  • Vq Ive.>
    • LEAK RATE

.. LEAKAGE

....

  • LEAK RAJ'E LEAKAGE NUMBER..

NUMBER..

............. 'VOLUME. BE I NG** TESTED.

.. SCFH......... SCFH'..

... SCFH /'....... SCFH X-1r1~1!

?r.1 ~-I A~ J, ?JJs-zA 0

(')

'?l'!~-11/

J.

G03-~J/

0 X-11?c;'R

?07,-//g-k tt ~03-?..B 0

h I/

?n < - I B

& c.o~-

7-IS 2-,fi?'I X-10'> °re

?17-,,,-J{"f(

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. -l

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I I

TOTAL THRU LEAKAGE FOR PAGE

'()

0

--Indicates waterhead pres~nt on one side of valve

Q TA:8LF j<:::J LOCAL LEAK RATE TESTS PERFORMED DU~ING THE UNIT 3 REFUELING OUTAGE OF 1975 INITIAL INITIAL THRU TEST PENETRAHON...

P If/~. Befwre11 Vq/vl"'.>°

  • LEAK RATE
    • LEAKAGE NUMBER.

NUMBER.**

............ : 'VOLUME.BEING:TESTED

................. SCFH"...

,...... SCFH" X-101 f'pr<.nl'lr1Pf A t'r /.../Jr k.

  • 0 (" \\/WD//,;-,, /,, V

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t'">

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J., E11rl tJr L1~e.

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5 f,op,.,

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Z Zn - I st <?.2.0-?

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/071. 'l<J 10~,i.fC/

C.?.O-S7 A"'IC J ??.b-h>fA

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()

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I (

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TOTAL THRU LEAKAGE FOR PAGE 2 01.//, c-l

-*Indicates waterhead present on one side of valve FINAL FINAL THRU

-LEAK RATE LEAKAGE

... SCFH......... SCFH

/. 51.f J, 0 I../

I f} LI 3c /..f 17

/'), '1C? 7 0 C)j' 7 E

13.77

/'**:~

(

1 (3).

rA.Pi_:;; y

  • { Cr;nfl~vted) dJ7

,.**,'.. I\\

\\:;.*.';:*~"*

0 LOCAL LEAK RATE TESTS PERFORMED DURING THE UNIT 3 REFUELING OUTAGE OF 1975

.TYPE OF PENETRATION:. er:./mtY 5y//em Jso/qfion. Vtt/ves

  • I INITIAL INITIAL THRU FINAL FINAL THRU TEST PENETRATlON...

P1pi11J Betvv-eeYI Va/ves LEAK RATE

    • LEAKAGE.... *.LEAK RATE LEAKAGE NUMBER NUMBER........

....... *voLUME BEING:TESTEo*.

......... SCFH

.. SCFH

... SCFH.....

SCFH X-11;. B J.>Clt-ec. g

- ::>6 ~ K

/ 1001-Sf?

LPCJ" J11Jef J ?

~q I c.~ 39 I I

!50l -c5R fi /501-c.6/3 K I I 2./.) Ob x-1t7*

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?001- ~ l.

Z001 - t Ow Ed1.1,*~ PrYI (u~.A /J1~rh Z,3/

/,I h x-12..1 47Z.C..

~ r::.hPck-volve Jn~ fru,,,,,n/ IJ1'r 0,, ii t, n 4 I X -I>?

22.0-44;r fn ?Z0-1(~

Pr-J'.,.,,nr J

.;-,.,hi.,,/~

> 70

/_ ~ ~

V-pC /,)(-),/fl

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I L TOTAL THRU LEAKAGE FOR PAGE 5S-, 7 c; 3C..f0 I Nev./ > e Cl r f'>.t t,,, - valve: c /tJ.Jt/ ~

M11111,1e1/ly

  • Indicates waterhead pr~~ent on one side of valve I l

f~.-~

t:J Tll!!>LE >

{con/-1~14ed)

I

~

LOCAL LEAK RATE TESTS PERFORMED DURING THE UNIT 3 REFUELING OUTAGE OF 1975

.TYPE' OF PENETRATION:.. Pi1'niirv 5v5fe&z".15i;/til1bb' Vtt/Vf'S

./..

)

Be f vw>tn Vrtlvt>

  • INITIAL INITIAL THRU FINAL FINAL T-HRU TEST PENETRAT~ON...

l1f inJ LEAK RATE LEAKAGE... *-LEAK RATE LEAKAGE NUMBER.

NUMBER............... 'VOLUME BEING TESTED.

. SCFH

.. SCFH...

... SCFH........

SCFH X-;soA l<>111-?7P. li;~IJJ-c<tR- -*--

L PC J (011 fd1~..,,,,~ f 5LJra v

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TOTAL THRU LEAKAGE FOR PAGE 7, ~

r;30

  • I
  • Indicates waterhead present on one side of valve

r

-~..

(~,.'

~)

l-4t>t--? 6 LOCAL LEAK RATE TESTS PERFORMED DURING THE UNIT 3 REFUELING OUTAGE OF 1~75

.TYPE OF PENETRATION:. Oowblf.._. Gti?Aeted :Seed$

INITIAL INITIAL THRU FINAL FINAL T*HRU TEST PENETRATION...

LEAK RATE

    • LEAKAGE
    • LEAK RATE LEAKAGE NUMBER.

NUMBER............... : 'VOLUME.BEING TESTED

...... SCFH'.. *.

.... SCFH..

.. SCFH......

  • scFH

'X-JI){]

E 11u,*,, ""'"" r 11/Tt,,. t..

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TOTAL THRU LEAKAGE FOR PAGE

21. 7S

&.'le_

  • Indicates waterhead present on one side of valve t

w

-- -------------------------~-.

.---~.--...-'--

TEST LOCAL LEAK RATE TESTS

~

8 TABLE 6

{Co,,(,~ 1.ffd I PERFORMED DURING THE UNIT 3 REFUELING

.TYPE OF PENETRATION:.. J)&yh/t:.. Gltzlreted *:eats*

INITIAL PENETRAT~ON...

. LEAK RATE OUTAGE OF 1975 INITIAL THRU

    • LEAKAGE NUMBER.

NUMBER................ 'VOLUME.BEING:TESTED...

......... * *scFw.. *..

. SCFW.

x - (./ ~ T/Jrv t Vcv1.1*"""' P.reofff'r 11io1~?.,2J~ /)~,~9 S6.7ref' ' x -.,,171 /: TK> rll > Var I.ILi......, P. r-l'h );f'r //,(}) - 3~ /J

h. /C 3 () 7 7 x - -i..nh rt Fne..t rnr.~c. Arre>< /-/,..Jr bi 0

0 ~ -1>0/J 8 Wp.;;f 11 I ' 0 017"1 no o Cf .V- ~ J 5 /J: Fd~i* Tl'I,,-u "- fn,,,-:f,,-,,,f/(l/I Dr/71~ n n Y-~J~~ WP< l /I I I l I n n )/iPdr /_(A(,! ] '1 ~ n"c f I 'n,,, /-Jn fr J, tr I t), ? 7q ()" "f 0 I' 11-? /') 17/..19 f') I??.~ I* 'I 'I 113

o. 5?.lf o, ?-h ~

I' I ( J1- 't 1?,.S6 7 I? 1 'tJ Li (I II I I I/ J1- > /) Oh~ OJ)~; If II tif c. 0 n I/ II

II-7 no 3~

0 017 I I I I ,, n-g nntlt7 tJ () ?. <;"" TOTAL_ THRU LEAKAGE FOR PAGE 6 o. 6 7

  • Indicates waterhead pre~ent on one side of valve

~ FINAL Fl NAL THRU

    • LEAK RATE LEAKAGE
  • * *scFw.....

SCFH n D 0 IJ 0 ()

  • D

() {) I) - fl (}??tf

o. I '1 0 (J,(} 'I q

/') 0 7. c; fO I >z ;,f o.cb?.. o,.>G 7 0.2.~£f CJ, (J (,,S-(I) (} s \\ () 1J tJ,o :iJ {!) {)/7~ {),rJ'f 9 (), 0?.-7 o, 71

0)

~ LOCAL LEAK RATE TESTS PERFORMED r1telc- "? DURING THE UNIT 3 REFUELING OUTAGE OF 1975 TYPE° OF PENETRATION:.. Elecfr/cal feaett-qt/0~5* INITIAL INITIAL THRU FINAL ~INAL THRU TEST PENETRAT l*ON '".......

        • LEAK. RATE

.. LEAKAGE . LEAK RATE LEAKAGE NUMBER.. NUMBER................ *voLUME:BEING:TESTED ........ SCFH.......... SCFH... ... SCFH'...... SCFH x-c.ooG. P,,.*,,,.,. Fnr Vn/.,,,.. (,,.,fr11/ r,,,~~*,, ',.nh'n,,,c. < zq /, 6 tt; l{-?t?JP. c;- IA l/ P n A,p r n 6<;n In ) 0S:- Y-?f1~A t.:- k v Pn>A/er (!) 67 <.. (} 3) 7 X-?1?2.~R t:R D Ind1~nfnrc.. 2 ~ In (] n {IJ Y -.n? ? Tr ~ k ;1 PritMP( I? 0 X-?IJ?F T J..,,.r -* /1 r /l, ~.,jp c. 0 n X-.NJ,> I Np.,/-~n..i flllnn.,-tor 0 /"). . X-?Ol/I/ ll!P.JTro,, f1,,,.,, f/lr ? o~ /,(}/~ x - ?JJ? rJ 1\\/111 tro,/') Mn..,,f Q>' f) f) X-?j]i'. 5 I (" /<!'> J,-,,../,',,,..,f17fc_ £. <3 I $ J.10$ Y-?IJ?.111/ r RD Inr/i'r_ofo((,

? 3 t, I. 0c£ Y-zo "?.. R S fl V f>nl/l/PI/"

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o. ~'l-Lf

' H1~J. ":<../J? /,~J )(->n11A V ~/ hu1~ Pr1 iNt" !" .f i/ / 0 y * '>/Jll ~ f\\fp,,1fr/J,, M""IJ'rnr n Y->nw/.I f\\/p u f r11,,,,.,,,,,,,*tn.; hnlf<"/ 3.(1./t;° Y->nw/. . p,J.,/Jr ~ (.., ""'" ~'A h.fJ9 ~ (J 't t;" >t-?/JUM P/J,A/l'Y" (',,,r \\/r1/1H<.. Ji /,',.J..f1~tA /..f /J~ 7()'l,'7 lr:l<n I nd1cC1tOr<.. ./ )

>,/<) 0 Y-.>,011 JI/

I 00 ')( - :>nv 0 lrRn ]",,,.J,~otnrc. h 09 ~- IJ II t;' X-?n11 <:

l/d/,n, Pn.,,,/P.r A f.n.. /-,rnJ tt (J ~

l (]I~ X-?n~ rs.. '. f:Rfl _I,,,d,',.,,,f/Jf'C /) /.§'/? O.)l-"6 TOTAL THRU LEAKAGE FOR PAGE c "* 9'1 I 2 'f, 'l'-f

  • Indicates waterhead present on one side of valve

T fl fJLt:.

  • LOCAL LEAK RATE TESTS PERFORMED DURING THE UNIT 3 REFUELING OUTAGE OF 1975

. TYPE OF PENETRATION:. . DR.r WE?.J;.. t3E"ililw $-EAL-> INITIAL INITIAL THRU FINAL FINAL lHRU TEST PENETRATION...

      • LEAKRATE
    • LEAKAGE LEAK RATE LEAKAGE NUMBER.

NUMBER.. :*............. 'VOLUME.BEING TESTED... .. SCFH"... ,..... SCFH". .. SCFH"....... *scFH Te~ t s-raf1'n X-IOe: Ll p,..,*,.,,,,,_, <;fPn-" I '~D A I 0 n X-lnc-R I I 0 B /) X-1/JSv ( c-I 0 0 X.-117>/): I( ( I l I n I ('f..W C-0 0 0 X-l!Jh Pr1~tlrv ')fpd~A /JrctJYJ I 0 0 / x-1JJ7JJ Rff'or.f11r Pl'~dwofn-I,,., l.t> I I (), O'l 3 (} 0 'Y-lfl7~ II 11 I I J 0 IJ (}f-l(p'? X-117>? r < /llaf1~.A f///Jdl/J <;,::Jr )f t't1 /-(/ s-... 011/v 3 (J 0 I Y-111?,4 7 < 11 IA f,**11,,,, ( /"J 11d f) n c:.r-' r r-_/);,,/,,.n sof p i? P 11.tl'Y'I C, 0 FJ ~ -ltJt/ s /"RD R~ it,,rn ?.. 0 0 . X.-111A < J.,,, f-,,//1 vV YI 1./l'al FxA,,JnlKr <:u,,,,.,,, I 0 0 / I ( / X -IJI R Ii 11 I I J 0 0 ')( -11 ~ r /pa,,,,,," <:,,, ~J,, s 0 0 I f / Y-1/hA lPc:r Pv,..,.,,.-, /) 1'<;rJi.o;...1?P I 0 0 ,/ I n 0 Y.-1/hiZ. fl I I X-/2,~ C Joe.eA [on/1~/".,f Wo ftr l.. !.rl I 0 a ./ ~L rle 1 I (Jj 0 X-/?./.f /I I' I/ X-1::> ~ t/ .P,., r f"r,., >'V) !J"' v v,t? I/ 3 !fl n f I () 'X-nt. Vf., r tn OrvwPI/ n { TOTAL THRU LEAKAGE FOR PAGE 0, 0'16 f' J,O'f65

  • Indicates waterhead present on one side of valve

('\\'\\ ::J Tfl.Bl-E i {con 11~1.fe~)

LOCAL LEAK RATE T~STS PERFORMED DURING THE UNIT 3 REFUELING OUTAGE OF 1975

. TYPE OF PENETRATION:. ./Jc vwe/F Be/Id#.f.((//j{ . r I INITIAL INITIAL THRU TEST PENETRATlON.......

    • LEAK RATE
    • LEAKAGE NUMBER.

.. NUMBER......... *I I I I: 'VOLUME'BEING TESTED. .... I* I. SCFH I I * * * * *scFw *

  • X-1?,<<

II Pc:J 5j17q,,,, ">LIO n/v I 0 () I v._n<,< * )fon/J hv J.1'a.,,'d ( l'J /1 f YI)/ I o.or~ 0 01(6?

  • /

{. [ 3 X-1'1 7 R..Pac.fnr v;; <.<PI /.l,n,1 e; ~.,.-11 _, 0 () I / () X-1'-IC/A* CffJrl' 5nro \\/ J°/'l/Pf FJ I / 0 X'-/'19P. I'

z.

() I TOTAL THRU LEAKAGE FOR PAGE 0,0'16 >

  • Indicates waterhead pre~ent on one side of valve FINAL FINAL rHRU
    • LEAK RATE LEAKAGE I 'SCFW.

I I.... SCFH

  • 1

--~ (),o '16>.}}

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