Text

Containment Leakage Rate Testing, Technical Evaluation Rept
	ML20090B443
Person / Time
Site:	Monticello
Issue date:	04/07/1982
From:	Delgaizo T; Franklin Research Ctr, Franklin Institute
To:	Huang Y; Office of Nuclear Reactor Regulation
Shared Package
ML20090B446	List: ML20090B443; ML20092B867;
References
	CON-NRC-03-79-118, CON-NRC-3-79-118, TAC 11134 NUDOCS 8204120416, TER-C5257-30
	Download: ML20090B443 (50)
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_--.m NRC DOCKET NC. Sb253 FRC PROJECT C a

} NRCTAC NO.11134 FRC ASSIGNMENT 1

NRC CONTRACT NO. NRC c3-7*--113 FRC TAqK 30 i

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F.mpa.vd by Franklin Recc rch Center Author: T. J. DelGaize l

2:'hn and Race Street Ph:ladelphia,' PA 19103 FRC Group leader: T. J. DelGai:0 Frspsredfor i

Nu !sar Regulatory Ccrn.t,!stion Wcshington, D.C. 2 555 Lecd NRC Engineer: Y. S. E - g Ap:il 7, 1982 t

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Th!s repert w:s p;e:Ered as cn' ac:cdnt cf wcrte;; nected ::y r.n ~

t tncy cf the Unfted Strics Gcvernrnent. Neither the United Stat 2s a

Government ner any t;;ency thereof, er any of their empl yecs, makes iny wirrtnty, expretted or implied, cr assumes any legat

!!ct!!!!y or ret::cneibility fcr cny third party's 'ese, or the rceults of

uch use, cf any informat'on. c;:paratus, produ:t er prece:s d!: !cced in this re;: Ort, cr represents'that its use by su0n third party would not infringe privately owned r!gnts.

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Sectica Title Pace 1

EACKGROUND.

1 2

IIA 10ATION CRITERIA.

3 3

TD E:ICAL I.'ALUATICN 4

3.1 Recuests for n:e:ption.

4 3.1.1

?fpe 3 Testing of Instru=ent Lines.

4 3.1.2

?fpe 3 Testing of Drywell AiEleck 5

3.1.3 ' ?fpe C Testing of Terus and Dryvell. Motor-Cperated Spray or Recirculatien valves.

8 3.1.4 Direction of Test Pressure.

14 3.1.5

?fp2 'C Testing of Core Spray-Testable Check Valves.

15 3.1.6

?f;.e C Tes; ting 'of I,:w Pressure C0olan: Ir.j ection n stable Check' Valves 18 3.1.7

?fpe -C Test Pressure for Main Stea:a Isolation Valves.

19 3.1.8 Lines Terminati.q.Below the Surf ace of the Suppressicn Pool

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21

'3.1.9 P:cpcsed In::e ase* in the Value of I.a 22 2.2 P:cycsed Piping M:difications to >P cvi:'e for Ofpe C Te sting 22-

~3.2.1 Instrument Air Inclation Control Valve..

23i 3.2.2 Cocling Wate: Supply and Return to Drywell Fan Coolers.-

23 3 2.3 TIP Eall Valves and Purge Supply Valve. -

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23 3.2.4 CRD Efdraulic Return Inboard Check valves

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.27 3.2.9 Torus Instru=ent Air Supply Centrol Valve 27 3.3 Preposed Tecnnical Specification 'Chan e.:.eg:ests 28-3..'..'.' i. * ".".~,~ Co r..=." ~..* ~..~. s.'. w.- c, a,. ".~ ~..tcn

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3.3.2 Surveillance F.equirements -

28 3.3.3 Monticelle Contain=ent Penetrations.

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- 2:=pesed. Changes to the' Li=iting Conditions for Operatica 30-

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vr.:.n This Technical Evaluatien ?.epc:t was prepared by Franklin Research Center under a centract with the U.S. Nuclear Regulatory Cc==issica (Cffice of

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assistance in suppcrt of NRO operating reactc licensing acticas.

The tec nical evaluation was ccaducted in accordance with criteria established by

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c review the centairment leakage ter:ing p:0 :2 at the M nticello v._..,,,..1.,-

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r wi.h 1CCIR:0, Appendix J, where nece ssary, including app:cpriate design

. dificaticas, changes to technical specifications, c regaests fc: exe.ption f:c: the rec. eire =ents cursuant to 10C??.50.12.

SSP replied en September 19, 1975 (2], providing a detailed ccaparison b.etween the requi:ecents of Appendix J and the contain=ent leakage testing p:cgra at the Monticello plant.

SubseTaently, N5? sdnitted a Licence A endment ?.eg.:e st, dated January 30, 1976 (3], an;i revisicas to it, dated May 4, 1976 (4), which p cpose-d changes to the technical specifications for the Menticello plant.

SSP supplemented the Licence Arend:ent F.eq.:est with a

ec.ue s: fe: certain exc pticas f:c de :ec.uirements of Appendix J in a lette:

dated May 5, 1975 [5] and proposR nsdificaticas to varicus piping ryste:s in a sec:nd letter, also dated May 5,1976 (6].

~2e ccccinatica cf the p cposed

ecanier.1 specificatica changeh 1:egaested ere:ptiens, and p:cposed c:difications represented 1GP's overall plan for achieving cc=pliance with the regairements cf Appendix J.

Follcwing a review of this raterial by the 'G.C staff, a meeting was held

- "se::ber 23, 1975 to discuss cert:in aspects of K5?'s p::posals regarding

2. i... n icakage te sting.

O.c tecting was attended by the SF.C, represan-nati*re s cf NSP, e.nd NI? 's cen: alt. nt, the Eschtel Peve: Oc:peratica.

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Finally, en 52ptenhe: 2,1977 (2), K5? subritted an additional License A=end:ent Regae et p:cposing changes to the technical,specifica icns regarding the duratica of the ?fpe A test.

Supple:entary information relative to this p:c;ocal was provided en March 20, 1973 (91 O.e purpcSe of this repc t is to p Ovide technical evaluations' cf the C...... 4.:. ng

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.:,:.::Ji'y.ent' u.L(yat Te':.::ing,/ ra9, reecified Sy the 12.0 as the basis fc t
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the r-[y,1urgicas.,,~r.en jig *.ied td tiit follcwing evaluatienc, the criteria are
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The following sections provide separate technical evaluatiens fc each cf these rec.uests.
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!;5P stated that Section III.E.1 of Appendix J, under the definition c....,. 4. e4.,a.. s ec. ' c. ".. G..'., c ~. '.d.
" a. c ~.:s * -".a'. *o ec,",4.e es 4.., c "..'.. e..- u-Cent lines not ee.nie.ced with excess ficw check valves.
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a pit.nt design.
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"?fpe 3 Tests" means tests intended to detect local leaks and to measure leakage ac: css er.ch p:e.ssure-centainirg or leasage
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c..,.
c, e f.c
. C 4. e.,.4,
,,..... c s
.t..e. -cf e a c
v.0 a--
it a..
3 0.a s.c. wouac
.h. a. 8..e
.ex-d.
~....i s ' i -.#. 4 s c' a..# "..
.d. bv ' r, '.v.'.-. a ~ '. e.- a..'. ~' *.* c.. a.b. ' - (P /Pa)~f,'
e
the aicicck leakage criterien of 0.05 La found in the " Standard Technical Spec:.ficaticas for General F.lectric Soiling 'n'ater Reacters. "
_.....r..
..nm Sectican III.S.2 a.d III.D.2 of A.=.cendix J recuire that contain=ent airlecks be tested at peak calculated accident pressure (Pa) at 6-ce nth 3,
w
.... e..c-
a..a e.e. e.,. w. c,4,,.. 4..
o....e, n : c c..e.; _6 n
. e,. s.
. ese v.
ec.uire ents were 3=ccred because airlocks represent c.ctentiallv. larc.e leakage
,.. w
. wa w--
7 s
.e e.
ye--
o m-..te
.o w-a g o w e c... -.4. a 7*. re..a.. a d.o..s.
.'. c a.
3
enetraticas (ether t.han airlocks) rec.uire testing in accordance with Ac. cendix J at in:'ervals not to exceed 2 years.
Appe.tdix J vas publishd' 'in 1973.
An analysis of airleck events.cc piled d
f:c: Licensee Event Eepc :s since 1969 shows that airleck testing in accc:-
dance with Appendix J has been effective in p c pt identification of airlock
.cakage, but that rigid adherence to the af te --each-cpening rule :ay not be
.. n.. a..e. e.., -
t g4. n e O c".*.,
ku
.g b y..g k g, 3 crr q.sJ
g1y aQ.,, g e
..e.
,,s
.J...b. J o g 4
s..
~
. 3,.
g. ~.,.,.,.. ~.-,.. e> ' a =l..
a.
a.e. c...ea.'.ad i.l' ab'a.' a.= *. a '#-'..
C' "'.a.ee
...e.
, a s v.e.e e
e.n..., " c ' ' c ' V... : e - ' '. c - *
c... - '...-a-"'....,
.'.c.
.y...z..-
a
...a n
reating cf airleck d:>c Ocalc.
':tese f ailures were generally caused by leak-age past dec:-cperating =echanic:1 handvheel packing, dco:-cperating cylinder scaft seals, equalite valves, or test lines.
~nesu penetrations are simila:
to other Type S c: C centain ent penetrations except that they may he Operated sc:e frequently.
Since airlocks are tested at a preccure cf Pa every 6 renths,
. u. c.,.
.,.,..sc.s a.e ~cc"a^,
a ~. a ~;..4.."...,
m-o'.- "...=.s m e "..e-.an~.'v "".aa s.
e.....
v t c. ical ?.r..e 3 er C eenetratienc.
The every-6-c.cnth test is therefore Wh.
..... =.... ~..=.......u.e,...
= :r..,. e,....
.v.,..v v.
.r. -:u>
.3
.w
,i g. ; e.4.. A..-...:
.4.._,...c.,
e..
. 3 3.
.. wm w
3 g..
- 4Ae
.e.eCr....n C.
2
.a
...f.
.4 o.
m.
lea r: ace.
l-
==:0:e: sea:ing cf the doc: seals, hcVever, is no: caly the ecst r
r frequent cause of airlock failures (the remaining ~5t), but also repre:2nts large potential leakage paths.
iihile testing at a pressure of Pa after each cpening vill identify seal leakage, seal leakage can be adequately revealed by alternative =etheds'such as pressurizing between double--gasketed seals (for airlocks designed with these seals) or pressurizing the airlocks to pressures less d en pa.
h:ther ore, experience gained in testing airlocks since the issuance of Appendix J indicates that the pse of one cf 'these alternative nethofs =sy be preferable to the full-pressure test of the entire airlock.
Airlocks in reactor plants desic.ned erior to the issuance cf Appendix J,'
of ten cannot be tested at Pa without de installation of strengbacks or other te=perary bracing c the perfor=ance of =echanical adjust =ents to de operating =echanis=s of the inner doors.
7nese cperations are necessary because.de inner doc:s are designed to seat with accident p:cssure en the dryvell side cf de doc: and derefore the op2:ating techanis=s n r.
were not-designed to withsta..d accident pressure in the cppcsite direc'tlen.
1: hen de airlock is-pressurized for a local test (i.e., pressurized between i~
the doors), pressure is exerted ~cn the inner door in the cpposite direction,-
t causing 'it to unseat and p:eventing the conduct of a =eaningful test.
rne
., _c...
7. s,.2...,
.~,, ~ i. _. 4 o 4 4,... m..
2.
7...
.e - u.
.. : ~., e....s, 4,..,
.w
.-.....g
.u.
act, alleving - u -aet to procs.:ed. To:.insk'11ation cf'.he-b/acir.g c -
perfernse:2 of the -adjust:cnts is time censuring- (cf ten taking several hours),
=ay :ecult' in additicnal radiation e: pesure to cperating parsonnel,: and =ay cause degradatica to the moerating =cchs.nis= of the. inner door with consec.uential icss of airlock :eliability. -In addition,'when frec.uent, cpenings a:e required over a short period of time, testing at Pe.-after.leach-
_ cpening.becc e's both impracticalF(test of ten take f c 4-hours to'severalc days) and accelerates the rate of.e:pesure to personnel and degradation of t
=echanical equip =ent.
t e"". f'::%
W g '--
a.L.; go ' n;.
a.
.e
..=.a
.e
.n.
r O.#..*..: e
3
.s e
e....-. s.
z.
_4.,
.4 2 ::......;
te u..........c.
.w.
s.
a............
.s.3.4. e.., 7 -
.,e..c....
s,--..
,r....
e..
..4..
.c,,i a.
t:
,._.. a. c..
-. a.
.m.... t
c. n..'
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. a. c. :. -..
C.:
. u. e
.2.,7. s. ' _'
.......,..g..y g
,;.*.A a
1 g
.r 4,. eyq.. -
4,..e
.. w.. r a.
g 4 i..;, 4g 4.
g o.
is
,3 2-.c.
i a
.. c m.:
r ----
e
_a
.e. ; n..
. c
a.. _.w. c. a.. ;.. :.
.='"..-_".a.......a.,
~'.e
=."".=..
.=.'.,,..*.:
r..
test :ec.'.:irc ent cf A=.c. endix J was revised in Cctober 1980 to an eve:m.-3-f av.
te c tine. r ec..: ire =e nt.
Eevever, SSP's ::cecsal to perform the every-6-month tes at 10 psig is unaccepta:le since the airleck test at a pressure of Pa has
.,.,.n
~ n.o oc e
,en._4_a_.<..,.,,. a,
.... ac ~,.
e., ce
...s
-e _.,,..
..f c.e a_..
w 3
airlock assembly.
The every-6-senth airlock test should be cenducted at a
-' a.' n = ~ o. ~d = - = wi th r'.
.e..d,ix u.
,e........es r
r
.eo
_c.,.,,
g.e. n s ex..,po1a-a..o. c. u-e a_.. -.,- e c ;., 4.a
.a n_
o. a,
.r e
-r-m
.a.
.o 0. v".5 La ". o.- ~_5 e.' 0.s '. ~. e s. ' s
".,a.a e t.., 7 = d e *. a...#." "..#
. " '. ~ '.e d
r leakage rates are related by the ratio of de test pressures to the ene-half power.
This determination is valid where the characteristic: of the leakac.e are essentially orifice-like.,_" Ice actual leakage c:aracteristics are sc cwhat t..
ec c...,,
w...
a-i :-
ba."'.:
s
.c.'.-.a - 4 ca c.e c..' #.4. a '.i ;. e c...>.
. c <.e.i. ' ' c..- -
...e.
<.s c
.7 b~..c.e=..~.'...r'.~.:'_.'_. n' '.o ". '.'. c :r.- '., "_a
,~...-. M...=. ~..' c. be..~r. a...
a a-the : o test pressures for c:ifice-like flow is less concervative San de cc::elatica for capillary-like flow, particularly where, as in _ this cace, Fa
.. c..,..,.., c e ab.' v. ' a.- e r " " ".
O. '..
i. e.. c e. e c ' th e a c -"_ ~- a. c..#
e..ia c ' " e
.o,... d_ a _- d
'.'a. c.... _+ -
1 5
.~
r y...:...a _s
,. s....sc.- G "..a.- d
='~-'r'- ".s.*'.'..., 'r.>... =.ea..m.~
.. '. O. O.c, *a a~
., 's a
%,. A e..h e.. a.'. ' c..r....- a.
. a.e..c-d a
..'.. ". - - _'...- _' a.. v.'-... m _' _' ".fp.e
,...2 v
J.,
.3 g.
.,.e cA.
=
y,.
g,
y.a.a. 3 gg g
,t 4
. w 4. 3 4 n 4cn.O
._, e
. ~~.~~
g
..,.....es
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. a.
c.-a c.. s a.-~..~ ~. 4. c c.. e _i a ~..# c.,.,'
c'.-
e..> ' x n' r
zf should be used (Fc,uatica A-2) a..d therefore the acceptacce criteria at 10 psig should be 0.007 La rathe:
tan 0.025 La.
,.'..'.3
".'"_. c_ e C "a e
8 r. c.' ".".-".
".. d '.. e e ' ' ".'. ^...
.ed c.o
=v c.
Recirculation valves
,o. ?
h.,.s e,s.ue.c d c s.e._ _. 4.
a.-.e t,s.4 e-.4.
e
,,,.s
.eo m
r.
s.
.pc...a 4, la. ' c. v al". a. s i..s
1' e 4. " a.
'.,.-"e
. e.
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d A
-s-
....e.'.t;..
s.1f.....
*. os v4 he 'we2 s s en.s....
I~
5
- - _e.- - -, v.
\\
.; hat ;-f :he'd ell spray lina:.
7:ese line: have
.o p :.,1rien f : 22:1,7
~
t
de: inner,iscla:ica valves are wedge-:ype ga:e valve: that Osnnot be tested I..
in:.the cc::ec: di:e: icn.
N3?'s basis fc
te :cquest is that the pene::a:icas d.li not cens:itute a e f. tai =ent lee.kage pa:h since.they wi n be pressurized
[
by the RER pt ps to a pressure -in exce

s of ?c and no single active failure 4
. can prevent pressuri stion by the ?G pu=ps.
. I: /AL:IATION G
7:e-valves that ce= prise this request for exe=ption are MO-2006, 2007, 2008, 2009, 2010,'20ll,J2020, 2021, 2022, and 2023.
Tne' piping configuratieng Jare displayed in Figures 1 and 2.
Figures 1 and 2 show penetrations X-39A,
-X-210A, and X-2H A.
' Penetrations X-393, X-2103,.and X-2113 are not shown bu*
Jare essentially identical and,-therefore, the technical evaluations associated
'with the.A penetrations apply eque 'y to the corresponding valves of the B pene::cticns.
Because of certain distincticns between the dryvell spray:line, the to:us spray line, and-the torus recirculatien line, each line is evalua:ed caparately in the f Ecving subcections.
rr T.
.s,
. '. 3.1 - 0:ywe11' Spray Line
.SS?'s contentica that this line -does net constitute a containment 1eakage
~
path because itLis always pressuri:cd by'the R.E pu=ps-in'a post-accidenti configuratica is cc::ect caly;in that valve l'.3-2021 is constantly unde.:' EEP.
n i
pt p p:escure (see Fi'gure 1). :. Since valver EO-2021 'and ~022 a:c ;initiallyc
chu: and :c in chut.until anually opened'hy!an cperat=.(in c:ds to
~
~
initiate f ryvell' rpray),,. there - is. no guarantce that the line J terve in the.
ve_lves will';ncr= ally ibe p:cesurized or even vate:-fined.-
Salves MO-2021'and!-20231are normally shut. valves.- yney are checked-shut' by the safety-injection signal at: the, start of an accident. - This~is done to ensu:e that allflow pre:sure injection flow -is.initiEny, directed into,the.
~
L' 1:cac:or vesselzand 'not J diverted to d:ywen spray.' Once reacto:; vessel; level
as been reestablished,: the. valves receive an cpen-per=issive : signal so that; "the epciaterfcsy-initiate dryvcH:sp ay to prevent;excescive drywell p cs-i ure. :2.dendire;-upon;:he c)::ent;of: increase;in dryvell: pressure, : pray nay o t
q A-
} ^b 59 h eg.
.
A..g..
i t
e Ub
-.:.. 4 c,'.'O.'t Cb".*he
.i..?ITCnY.S
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t
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n
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t:
. -.ee ew.E
. t en.
Y
.s
/
O2 J
=
a U
>=
=
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a b3
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e 5
e O
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4 88 0
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$me b
f3
.y,
' oQ ed x
. d.
J
.3' I
-w o.
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d m m
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-3 X'
04 M
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p* 2 -
J.
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Eaune
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(
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- i i
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...r.......--s
., C * >.sv 4 % N' %s A ent*~'t -
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. af
'l s
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e T
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4 MO 51 d'
X 211 A
v. m MO TCRUS SFRAY R".NG '
g 12*
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w mun m.
OsO. MAR 3E
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3.
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X.213A I
~ ~
J 2
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1 j
Figure 2.- *:::us Spre.y and :Recirculatica-Lines..
~
t-d 1
f V
-..?S -
3 * *
.i
....-=.:.........s,...
- ^
w......
....., +...*; *[ g 5

er., L '* h F -e 49
+
^
y T-7
'.'"***.*7*****"i r s..
r
... t.,.
c.,.:
....3..'...,
. i. a.
4
..,.,.....,g.,u,,.,q,,..g,
.., +... _.
-e wa g.
7...
,y g...., s, E.s _* *
4.,
.J
., J. 4...
,4 t
=.c.. e.a.J o,. J. #
p... J'
,., e. 3.p.
. r..
?..^==
bg g w..a.1 i.i..g 1.,e g
g.
7...a w
..w
..w
=
2=
.,. a..A.
A, m.. m.
n..e.
2
k. s.
74 4.
.e %.
..
A
.k. a.
o.,
. _e.: J a..e 6;. oc
m. m e a...... e. a s.... - e..
w y..
.u.
y..y
._s A.
..a Valves MD-2021 and -20 23 are single-ved:e gate valves.
In the case of
. valve MO-2021, the F.EP, water cressure on the upstrea: side of the disc will cause the downstrea: side to be forced against its coat, unseating the upstrea:
seati:rg surf aces by the tolerance e.achined into the disc, at a mini =um.
Tais desic.a c.revents potential leakage of con ain=eht air both by i::c:cving the seal cf the de nstream seat and dice and bv. cressurisino. th,e valve ackins
3. 2d r
body-to-bcnnet seal with water at pressures greater than peak centainment
.cressure.
n t.e case of s_1ve MO ~,'023, hcwever, the valve packing area and the body-te-bennet seal a:ca =ay be exposed to centain:ent air pressure since the.
water seal is :v.:t present against this valve.
In this case, containment air can escape to the cutside at.ccephere through either the valve packing c the tc.,dy-to-bennet seal.
Since valve MD-2023 ca:i~'bsces.e a source of leakace cf centain=ent air to 1
the cutside at=csphere, it =ust be ?fpe C tested in accc: dance with the requirements of Appendix J.
F.cwever, since the only potential sources of leakage are the packing an". co".y-to-tonnet areas, the intent of Acpendix J is -
sti:fied if these areas tre tested in accc: dance with A pendix J p:ccedures.
t c un 5: seen 'in Tigure 1, this testing..can-be e. c:f czned hv. c.ressurizin:the, piping between valves MO-2C'.1 'and -2023 with' air, assuring all detected
_to.
g.e.
w...e.._s.,ga.e coe..g s.e
.p...., e. 60.N... "-...a.*. e. :M.
w r.
O,e Licensee should take action to ensure'that the intent of Appendix J is satisfied with regard to valve MO-2023 (and si=ilarly. valve MO-2022 in'the.-
case. Of penetratica X-393).
. 3.1.3.2 -.? crus Spray Line As discussed in 'Sectica 3.1.3.1, -it is not possible to conclusively
'dete cine whetner the -line between valves MO-200'T and MO-2011 will be '
_t,_
d
~~
.... F. -4n i.e:.nt:h Ct.-:t
,,...,. y
.y,. m. m _..,
I s
.. _._ _-=, s,0 pre.:curi:c-f, ws:c -filled, c: air-fil ed (7igure 2,.
: L<e
.ne dryv-il :pr-;
net a c ir.gic--wedge ga:e calve ::: in a g'cbe line, h:vcver, valve MC-2 011 i:
a de: ailed drawing of valve MC-2 011, it canr.ct be dstermined valve.
Wi t:cu t L en -hien side cf valve MC-2Cll the pacning is 1ccated.
Neverchelers, the basic p:inciples involvad in the discussion acccciated with the drywell spray
. line acc.iv. to the terus spray line.
In vies of de discussica associated with the drywell spray line and in view of the f act dat valve MO-20ll is a giche va.lve, it is concluded that valve MC-2Gil (and si=ilarly MC-2010 in the case of penetcatica X-2113) shculd be tested in de direction cf its safe:y function.in accc: dance with Ov.c.e C should be tested in accc: dance wit $ Type C test'.ng testing p:ccedures c:
procedures f:c: any direction which will~ result in a test of the valve packing and body-to-bca. net seal areas. Valve MO-2007 (and si=ilarly MO-2006 in the case of penetration X-2113) does not regaire testing because of the water seal suc. c. lied tv. the P.Ea c. ure. s.
2.1.2.2 Tcrus F.ecirculdtion Line As can be seen fro: Fign:cr2., it is not possible f c: centain=ent the terus recirculatien line because the line ter=5$ates a.:ce.here to ente:
telcw the wate: level of the suppressica pool.
In dis case, :egaEdless of the location of de packing of valve MO-2009, there is no pctential path for leak:.ge cf centainment ats: sphere th cugh the recirculation line.
Conse-valve MO-2009 is not a centiin :nt isolatien valve in accordance with.
e.u e n - iv. r the definiticn in St.ccica II.3 cf Appendix ; eith regacd to the reciccula-5:vcver, it shculd be observed cat, vid reg. d to the tc:us spray rica line.
he pac <ing -cf valve MC-1009 can be a potential scurce of at=cspheric
line, leakage if valve MO-2011 is open or leaking past its seat and the packing of valve MC-2009 is erpeced to the pressure f:cm that direction (see rigure 2).
Valve MO-2009 (and, similarly, MO-2008.in the case of penetration X-2103).
~
de c not require ?fpe C. testing with regard to the tcrus recirculation line because this testing is not required by Appendix J.
However, if the packing
of this valve (and, sinilarly, MO-2008) is exposed to leakage ec=ihg f

cm the
. -t h
-.; ~=-x:~.
ew:b cena:
' :-~:- r
<, e -,a d
..:._-: :, _.. v-
s :p::.y 1:.ne, tnc pa cin; cf di: talve rhculd be cert:: in at:::d:nce
-fi h Typ. O p:::edurc:.
3.1.4 Ofrection cf Test Pressure In F.ef erence 5, NS? requested an exe : tion f:c= 1. :endix J to rerni testing in a direction cpposite that in which the isolatica valves will perfor= their safety function for penetraticas X-18,19, 25, 26, 27D, 27E, 27?, 41, 4 8, 205, 214, and 220.
USP stated dat testing cf these valves in de reve:se direction is pernissible under the provisiens of Section XI, Subsectica Iiiv of the AS." Code, since leaktightness of the valves is not deper. dent upcn the direction of pressuri'tation.
In 7.cf erence 7, SS? requested an exemptien to per=it testing in de reverse direction fc: three gate valves (inboard supply to.ECU, inbcard floc:
surp discha:ge, and inboard equip ent su=p discharge).
In the case cf these 7alvcs, SSP stated dat, since they are wedge-t2pe gate valves, leakage
~
rearurezcats =ay not be censervative relative to leakage =casure ents r_ade with the valve pressuri::ed f:cm the contain=ent side.
ESP's hasis fo:
eques:ing de exe. =tica issthtt no p cvisica exists to test these three valves in the required direction.
TnLCATION Scotien III.C.1 cf Appendix J, permits testing of isolation valves in the directica cpposite to that in which Scy perfc:n their sc.fety functica
(:cverse _irectica testing) provided that the test results will be equivalent s
...t C
.u
.. u. e._. -..,. -
u. t, e u..e. :.g
.z a
n
,a e, t.. C.,
r
.. C
.. 0
...s.
a... a w.
w.
w
~.
of. cident pressure.
Consequently, no exe=ption is required fc: the p.2netratiens listed in Reference 5 _(er. cept for X-18 r.nd %-19, which are cc::ected.cy Reference 7 to be gate valves dependent upon direction of test p re s t.::e). _ Eb:urcntatica of the Licensee's conclusica that reverse-f.irection testing is equivalent to or rare conserv:tive the.n testing in the direction of accident prescure should be retained en the site fc: future-reference.
t
. A..=w.
....,Fn.sn E :=rch Cc.ar
,~,. o,i. m,
n
.._..=...<_.v-E:v.v::, :ne lack f ;::vitien fc: lets te:::.? in me :erairef directicn i_c'nct su:ficien: ustific1 ica fc: exemp;ica cf..s in -c.:d i:cl icn valve to the reac::: vate: clean p cystem, -22 inbce.:d iscla:ica valve in the ficc:
su=p disc.arge, and-de i. cci:d egaip ent c=p di char:e valve.
P::viciens chould ba ade so dat dese vf ves say be tested in de direction cf accident p: essure in c:dcr to satisdy the regairements cf Appendix J.
3 '. l. 5 Tvee C aestine of Core Soray aes.able check Valves NSP rec.cested, as an exe n. tion f:cm A=..cendi$ J, to exclude the testable check valves in the cc:e spray 1.ines (tv:) valves, one in,each core spray line)
- f:om Type C testing regai e ents. SSP p:oposes to designate the tvc moto:-
cperated cate valves loca ed in each core spray line cutside centai=ent as the c=ntainment isolation valves for these~ penetraticas.
The actor-cpera ed'
(
J
- gate valves will be teste.i in accordance with Type C testing p:ocedures.
~
SSP's basis fc: this :eraest is that the testable check valves were not desiened to real againct *cv p:escure gas leikage and S at =aintenance atte pts have provided only te=porary i= prove =en: in the capability of the valves to satisf acto:ily eet the,' low p:essu:e gas leakage rates.
In tu itien,_NSF contands th:. the core sp: sy penetrations bec::ce potential leakace cads for contai==ect at=ccrhere only when ene of de core-sc. rav. pu=c. s fails to cperate af ter an accident, the associated line becaks outside
.centainent, and de tes- +"le check valve - in that line fails to seal. -- In this t.
I i
case, rSP v:uld use the. :enctely cpe::.ted gate valves in the line to isolate i
che pctential. leak (rec.ui-in+W cperatcr acti6n). The core sc.rav. sv.eten is 1
p:cte-cted against seismic events and p:tential.nis::iles and ~ NSF states that f ailure cf de mote:~cperated valves 'to function in de conditiens described above is unlikely.
4
.,.-.,.,t
..-.m..
Under' expected post-se:ident conditions, the contain=ent isclation valves for the cc:e spray panctcaticns will be -cpen and the-core spray cystem will be
' *).n cperaticn at precrures higher than peak contai=ent Jaccident p:essu:e.
In
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_." a
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e invente:y of the syste is e d austed by integrated cyste leu. age befc:e de
? c.e C-tested acter-cperated isciatica valves are shut.
In de case cf
c. enetration X-16A (Fic.ure 3), valves M'c 1 52 and MD-1754 vculd have to be shut. The ccafiguratica of the other core spray penetration (X-153) is essentially identical to the piping configuration of Figure 3.
ESP centends that it is unlikely that the piping cutside ccatzin=ent will f ail because of the reliable design of the syste=.
7ais contentien is acceptacle, even though there are ncn-safety-related cc..nections to the. core spray syste= (e.g., tre condensate service water syste=), because, in each inctance, de safety-related and non-safety-related bcundaries are separated by at least two safety-reltted check valves in series c: a locked-shut safety-related =anual isolation valve.
Further: ore, periodic inservice
^
testing cf the core spray :yste p:crides additional as::::ance that the liquid inventcry of de systen will not be enhaused before de Ope::ter can discover
,.he f ailure of a pu=p and :ei.her establich flev c: chut the note:-cpe. rated isolation valves pric to the enset of at=cspheric leakage.
The_ core spray check va.1ves are located inside contain=ent, and therefore seat leakage is tne only leakage of conce:n.
Oype C testing of the sotor-cperated valves.(MC-1752 and.uc-1754 in the ca e of penetratica X-16A) will account fc anv. seat leaktge pat". check valve AO-14-123.
It is eencluded that the core :p:ay ' testable check val.ves (AO-14-13A and
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cutside at:csphere.
This conclusien is based en the determinatica cat, under
' nornal circunctances, centainment outleakage is absolutely precluded by cpera-tica of the core spray system and, in the unlikely event that a core spray pu=p
. fails to start, the design featu:es of the system and periodic inservice
, testiing p;cvide adequate assurance that the Type C-tested notor-cperated i clation valves can bc. hut p:ic: to the caset cf contain=ent at=cspheric le a ka c. e.
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ener:e..c * ::ccedures recuire the c;erater to isolate an idle co:e spray 1cco shuttin-the a.==:cp iate noto:- cerated isciatica valves as soca as it is tv.
2 F
determined that there is no core spray flow and that flev cannot be
..s e e.. _, u _, a.e.
e.
i i-
~3.1.6 Tvee C '"estino of Iow Pressure coolant niection Testable Check Valves 1GP rec.uested, as an exc=ptic: f:ca An.o.endix J, to exclude the tests.hle cnecs valves in the icw pressure ecolant injection (L?CI) supply lines (two valves,- ene in each LPCI supply li.e) f:cm Type C testing requirements.
13 2 p:cpeses to designate the two =cte:-cperated gate valves 1ccated in each LPC::
su :1v. line curside containr.2n: as the contain=en' isolation valves for these
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1GP's-basis for tais reques is that the testable check valves were not designed to seal against icv p:ess :e gas leakage and that.aintenance atte= pts have p:cvided only te=perary i= prover, ant in the capability of the valves to satisfactorily meet the icv p: essure gas. leakage races.
Further,-
!GP :tated tha these' lines veuld.te p:essuri::ed by_ the PHP. perps in the
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Lt.:t:d peak accident p:cssure (?a).
All ec=pe..ents of the.:.EP. syste=_a:e.
p:ctected f:c= seismic events z.nd,ctential =issiles.
I L
i
. :.,.,...C h.
<~s I:nder ac:rsl_ post-accident :c::ditiens, the -LPCI testable check valves
(;.:)-10-46A a.-d AD-10-463) will be Open and p:cssuri:ed by the F.E?. pumps to n
pressures higher,than Pa.
No sin;*e active failure can cause aficss of'this t
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pre::::e ar.d :.c:cf: e :ne valves are net relief.::n to perf :n r. centai=cn:
u.:la:ica function.
In this ccndi ica, the valves are :ct centainn2n: isols-tica n_1ves as defined in Section II.3 Appendix J and do no: require Ofpe C testing.
In the unusual case thct ene cf the LPCI loops is intentionally secured while contai=ent integrity is sti.1 cf concern, =ctor-cperated isolation valves outside containment would be shut.
In the cace of penetratica X-13A (Figure 4), valves MC-2013 and MO-2015 would be shut.
The configuration cf the other LPCI penetration (X-123) is essentially identical to the piping cc.figuratica of Figure 4.
M can be seen f:c= Figure 4, valves MC-2013 and MO-2015 are capable of i:clating any leakage past the testable check va],ve AO-10-463.
Since they vill ' e tested in accordance with ?fpe C testing p:ccedures, the requirenants of Appendix J vill be natisfied. E.ecause of the testing cf MO-2013 and MO-2015, testable check valve AO-10-463 is again net relied upon to perform a contai=ent isolatica function aFd therefore ?ype C testing of this valve is net necessary.
A similar situatica exists fc: testable check valve A0-10-4fA, encre the other LPCI c cling Ibcp is secured.
n vies of the prece' ding, it is concluded that the LPCI testable check valve: are not :elied upcn to perfera a containment isolatien function, woe'ther the LPCI cocling loop is in operation c: not, provided that the
. ate:--:perated i=latica valves out:ide cent:i=2nt are Wpe C tested as t
..d by 1CP.- In this case, valves AO-lC-MA r.nd AO 62 do nce :cquire Ofp2 C testing in accc:dar.cc with Appendix J (nd nc exe:ptica is necessary.
3.1.7
? e C Test Pressure for Main Steam Isolation valves
GP =cquested, as an exemptica f:c= Appendix J, to continue testing main steam isolation valves (MSIVs) (penetraticas X-7A th cugh X-70) at 25 psig in accordance with current technical specifications instead of 41 psig (Pa). as
cquired by Appendix J.
MSP's basis fc: the request is that the MSIVs cust be tes:.ed by pressurizing between the valves, which tends to lif t the inboard valves off their seats at pressurcs in excess of 25 psig, thereby invalidating the :cs: results.
Custing at Of p;ig vill net unscat the int:ard valves, and
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~~. _,. n._ r_e n..=, _., u-f.c 1:.q;td invent::y ci tr.o.=cppatri:n ; :'..~~
~~Cen:cqucn:ly, there valvn re n:t r e lie d u p n t o p e r f : = a c e n:L'.r.e r.: 1:clatica fun::1cn and tnci: tar:ing is not a restire.ent c f Appendix J.~~
~~P 's c:ncinion that there valves do no:~~
~~equire ?/po C tecting c: exceptica f ec.- Appendix J is acceptable.~~
3.1.9 P crosed Increase in the value of I.a In Reference 7, !;5? :cquested that the value of I,a be incresced from the p:ccent 1.2% per day to 1.5% per day.
N3P haced this request on actual tests perfc :ed for the 1;IC which have shown that the cc oction factor of 0.8 used in der:,ving the 1.3 figure vas unnecessary.
D'AICATIOti Tno value cf Ia, although relevant to contain=ent leakage tecting in accordarce with Arpendix J, is not derived in accordttnce with Appendix J.
This rep::: addresses only exception requests and technical specification changes necessary to impleceni~ Appendix J at the Monticello plant.
Conce-quently, this pa:ticula: request is not evaluated and is lef t fc: tho app:cpriate branch of tho !ui; 'to' address.
3.2 PACCSID PI?!MG MCDI?ICATIONS TD PR(7/ DE FOR T.'PZ C TESTING In Enforen o 6, NSP pecvided proposed piping m:difications.to allow for
?fp. ". testing cf certain centain:ent penet :.tiene net criginally designed to pe:::.it.his tdsting.
NSF requested confi:n.:. tion by the nr cf the eva:all acceptattlity cf its interp:c tatien of the ':cquiations and the p:cpos3d reso-
~~uti:n cc the a:er.c of n:n-cnfc=ance pric: to beginning dctailed engincoring v :k and coc=itting funds for the ::dificatiens.~~
An evaluatien of each of these preposed =odificaticns is provided in the folicwing paragraphs.1 1.
Eevoral of tae fc11ovit:g evaluations do net. cpecifically address venting of the upstream side of tho valves to be testod because, although a vont path =ay not be shown on a pirticular cofificatien sketch, an upst:een vent pith is nornally available remeshere in the system and the ricensco has p:ot.ttly already identified the availablo v2nt path.
If those vant pcths cannet be identified, a vant fitting reny need to be adfed to ensure th at the cpp ci:e,ide cf a va*.ve being '.t.cted in p::purly vented.
22-4 h.--
.... &m nW E e~.uc.h C..t-r i:.,,,,,..,.-
m
~~m..=.m.: s z o _. a-2.2.1~~
~~r.stru t : u: :::12:te-Cen: ci vciv_e u~~
N5P ::ated that
-is c:n_:cl valve ray te..:ected in de reverse di:cetion as:.ng se::10.s of piping instaZed as part Of a plant =Mificatica to cupply nit: ogen to the dryvell instrument air header.
N3P ::sted dat testing in de reverse directica will yield a censervative leakage rate =casurement.
NSP
. further indicated that, if this testing is found to be i= practical u ing this ceded, a test connection and step valve can be added to the instru=ent ai:
li..e to per=it ?fpe C testing.
r7AI.UATICN Testing of cont:01 valve CV-1478 satisfies the Iqpendix J Type C testing
equirement for penetration X-22, ar.d testing in the :everse direction using the nitrogen akeup *.ine ce testing in the forward directica using the p cposed :dificatics of an additional stop valve and test connection (located between the penetratics and CV-1478) is acceptable.
Therefore, the p:cycsed sedificatica is acceptable.
e s i.
1.2.2 Ccolia.c Wate: Su:elv_ a.d'P.eturn to D v_vell Pan Ccolers R? p:cposed to =:> didy the cooling water supply. and :eturn lines to the
!:p *' "" c:clers by adding a =anual etcp valve and test ccnnectica en each side of valve pl426 (penetration I-24) and P3CC-15 (penetration X,-22) '.
t
.e.,..,,. g 3 c ~r
?fpc C tecting cf valve P.0-1426 caticfica the Appendix J requircren". for penetra:icn X-24 a..f testing cf F3CC-15 saticfies the require =ent fe:
penetration X-23.
~~n additien, K3P's propoced ::odifications will adequately~~
' ~ per=it ?ype C testing of these valves and are therefore acceptable.
3.2.3 TIP Ball Valvas and Puree Sucolv Valve NSP proposed to install an additional ball valve and test fitting between
.tse penet:a:Lon and the existing ball valves for penetrations X-35A, X-353, a.d.X *:K (7:P c ntainnant penetrations).
Also, NSP p:cp6:es to add a stop
,.... F-
. n u,w:- ce nw c.
.,..,.e.._
Iw 1
m....
. u
. :.. ~. :. a : a - :.,
r. i t._ 2 - fi ting

: c. ar p:nt:rit:ca :;-3 ~ I ini :. cnirtin; chte::
~~. '. - e~~
...m in :
,e "*2 pu';ge p2netra *.ic...
c SSP's p:cposed n:dificaticas will cdequately pe=it :cquired testing fc:
these penetrations.
"he m:difications are acceptable (see Note 1 en p. 22).
3.2.!
CR3 Eydraulie Return Intcard Check Valves KSP p:oposed. to add test fittings to bet.h sides of check valve CF.0-34 to i
pe=it testi:rg cf that valve.
Outboard check valve CRD-31 is presently tes,t-able (genet:stien X-36).
.....C,.1
. n.~ n Provision shculd. e _ade for testing the inboard check valve GO-34 in additica to the cut.Mard valve CAD-31.
E0 wever, only the test fitting between CPS-34 and G.3-35 chould be added, since a test fitting already enists between C70-34 and C?.3-31.
Alth: ugh the er.isting tes fitting bet. een CRO-34 c.nd C70-31 is cutside containnent and tsap ch :17 no: convenient f:c= the st:ndp,cint of testing CRD-34, the addition of a second. fitting in the ss.=e run of pipe inside contain=ent is net app: p:iate since it will add another penetration to this system w. ere it is not functionally endential.
O.is proposed n:41:icatica is
~~e. : tptable er. cept fe: the additica of a second test fitting between valves~~
~~';-14 and CRD-31.~~
3.2.5 Stz..dtv Licuid Centrol Eycto. Inbeard Cheek valve KSP proposed to add tect fittings on both sides cf che:k valve XP-7 (panceration X-42) to pe==it testirr3 of that valve.
he outboard chcek valve XP-6 is al:cady testable.--
O.,....,.,..
r ~o. n.
Valve XP-7 should be made' testable.
As stated in Section.3.2.4, however, a te:t fitting already exists between valves 72-7 and TP-6 'so the additica of a
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~~......c.. n cc:nd fitting in ci: p.:::ica of the line is not app:cpritte.~~

~~e 7:cpesed i~~
n:.dificatica is acceptable with de exceptica of de additien c'
~%
eecend I
tes: fi :ing' between X2-7 and XP-6.
N 4
3.2.6 EPCI and P.CIC Turbine B6aust Lines Tne piping ccafiguraticas of the EMI and F.CIC tu:bine exhaust lines 4.
(with vacuu= breakers) are identical.
Chis evaluation discusses NSP's p:cpcsd rega: ding the EPCI system but applies ecually to the similar p:cposal i
fc the P.CIC syste.
GP p:cpcsod to p:cvide i=p cved testing capability for the EPCI. turbine-exnaus: line by installing one of tvc potential cedificacicac.
The first
..aiidicatica would add a cta:-cperated valve and test fitting between step-
?
check valve EPCI-10 and penetration X-221.
The alternative p:cposal would add two resetely operated isolatica ' valves with test fitting in the vacuus b:eake:
line b4 tween the vacuu:2. b:cakers and the turbine exhauct line upstrea:: of penet:atica X 221.
ESP. stated d at the check valves cur:ently serving as 2
I contain=ent isclatica valves in the EPCI tu:bine -exhaust line (EPCI-10 and i
EPCI-9) have a histeri of exen:iive leakage.
Only valve EPCI-9 is cu: ently tacted. The additica of the cctc:-operated valve downst:ca:: ci EPCI-10 would p:cvide an additional valve that veuld be Type C tested and would beccee the r
c i
m.;ainnent isciatica valve for this line.
Alternatively, by dding the two-I.
~~o:::cly operated :tcp vdves - (with capability to test each) in the vacuum 4~~
4 (those valves-muLi receive G: cup. 4 isolation cignale), leakage-
. b: car..: line i
cf to:us aneccphere into the turbine exhaus: line veuld be precluded, a.d '
derefc e the estaus line w uld b2 vt.tcr scaled Lby terus v:.ter against the existing check vdvec (EMI-10 and' EPOI-9).
4 Y
-. nf
~~n* m..t 0t.1 r.* ** a Sin e the EPCI turbine exhaust line terminates below the. vater level of ce supp:ession pool, the p:cbles of testing this Lline fe: leakage of~~
{
~~ntainson at::>ssphe:c in eclved either by adding testable -icclatica valves -in f~~
'the vacuu: becaker line c by adding an additiend.isclatica valve downstream cf EPCI-10 as p:cpered by 13?.
, A..._. J r
3-(t$ *
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.r f
--2
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.w
.h
~~:na ::.::: ::1.; ica :.:. chonn~~
~~.=e :ddi:i:n Of a u::::-v;.::.nf. alve~~
~~.een 00:-13 and penet:ttica J-Ul, up:::ca ef de c nn:::ica :~~
~~the v ::=~~
~~cace: line), p:cvisiens to au:=atically "sha~~
~~=is valve when the E?cI~~
~~ine :.s no lon=e: in cpe:atica nust b: included.~~
In additica, check valve EP;;-10 c: EPCI-9 would centinue to require ?fpe C testing since a single r
active failure could prevent the shutting of the new note:-cperated' valve and 1
i enerefore ene of the check valves would still be relied upcn to perfces a containnent isolation function.
Further:,o:e, the addition of this =ctor-cperatedvalveecch.d:e.ruitineve:pressurizationof.theEPCIe.v.hauseline L
should the valve inadvertently shut during cperatica of the EPCI turbine.
Consequently, this alternative does litt;1e to i=p:cve' the reliability of line isolation fro = the standpoint of contain=ent atmospheric leakage and could possibly cause a 1 css of reliability due to =alfunction or cperater error.
t The' adfition of the :edundant isolation valves in the vacuus breaker line t
l
- eli=inates the need for the check valves (EPCI-10 or EPCI-9) to be able t:
seal ae.ainsti leaxage of cases. Once the vacuum breaker line has been sealed, the entrance cf gaseous at=orphere into the e:6aust line is p:evented by de supprecsion poci level.
E:veve, the signal which vill isclate the vacuum-rr r.
- :caker line =use :o designed so Sr.: the vacuu: b:eaker fu.ction of*de.line is not p:ecluded when needed to prevent the collapse of the etiaust line.
l C:nsequently, the additica of a ::ctor-cperated isolation ' valve and a te:t -
hnnection downstrea= of EPCI-10 (or RCIC-10) is acceptable.p cvided that the'
~~1..~~
,cill bs aut=atic*1'y chut a;'ter an accident whenever the EPCC '(c: RCIC)
.ryc:e is not'in ep2:ation.
Cie additicn of rodenfant i:clatica valves-in de vacu.:: bree.e: lines lis acceptahle pievided that provisiens a:e cade to ensure tha: de vacuu: b:caker.func:10n is net isolated when it is ne ded to prevent collapse of ' the e:daust line.
It should be noted that both of the alte: natives presented.by SSP for cofifying this penetratica leave.the vacuum breakers the=selves exposed to
.centainment.at csphere through penetration X-217.
Since the vacuum breake:s i
o ny to potential :cu:ces cf leakage into 'the reactor building, it. veuld be p:eferable 'if the refundant isolation valves in the vacuum breaker line ' e:e w
L leca:ed tetween penetre:ica X-217 and the vacuun bres.kere.. Although the lack p
.... =~.mm.=umeh cear a r. m rme, f
- a
-.---.- a
..c..:,_
r.
c: _:e ::u t t e :p:.c 2 c: 0 ;.e : hys:. cal c:n:::sinte n:y p:cclude -his endific::icn a s 2.. cp;icn, i is sug;cs:cd as a po:::ible a;, terne.tive, if practical.
3.2.7 Se:ineralized *4ata: Sucolv to the Drvvell NSP p:cpcsed to p:cvide for testing cf the manual isolation valves in the line to penetration X-20 by adding a test connection between valvec DM-57 and C ".- 5 8.
rr,d,::ATION This p:cpesed :odification is acceptab,le provided t!iat valve DM-58 is capatie of being tested in the reverse direction in accordance with Appendix J (i.e., the directic'n of testing of the valve is independent of the di:ection in wnica the test pressure is applied).
Assu=ing OM-53 is capable of reverse-direction testing, the modification is acceptable (see Neto 1 on p. 22).
l 3.2.8 Service Air Surolv to the Drvvell i
N3P p:cposed to add a tes connectica batveen isoir.tica vcives AS-39 and I,.
P.
l AS-40 ar.d to install tn additional sucp valve in the line to the service air Jupply to the %:!C ocs.
Or,d/UATION
te installation cf an additional step valve and the ter.: ccnnection between valves ;J.;-39.r.d 1.5-40 vill cdequataly, p:cride fc: tr.cting cf penetra-tien X-21, provided that valve AS-39 is capable of being t.asted in the : eve:se di:ectica.
Assc=ing the.t AS-39 is capable of reve:ce-direction testing, the p cposed codification is ac:eptable (cee Note 1 on p. 22).
3.2.9 Torus Instrument Air Suenly centrol valve NSP p:crosed to install test connections on both sides of control valve in order to tort penetration X-2293 in acec: dance with Appendix J.
' ' ~1 4
h
....#M"E.S N !!:h CtnMT
~~.m.s w e n e-~~
. r....e..r. ~..
e..
One a dd :i r. cf
.M tes: cer.ect: ens en both side: cf c:nt:cl valve C'.*-7 ?5 6 v:... a f equately p:: vide f : the testing cf pnet:stica 7.-2 53.
Ch-2 p:cys.cf =>tficat:.cn 'i: e.::e p t.ble (see !;cte 1 cn p. 20).
3.3 PP.0P" ~C TEC*G CAL SFECIFICAT:C:( C*IldiGE F.R* JESTS In F.cference 3, lisp submitted p:cposed changes to the technical specifica:ict.s for the Monticello plant to co::cet areas of non--conformance with Appe. dix J which had been iden:ified in Taference 2.
However, F.cforence 4 cc:plete* y :cplaced the changes p:cposed in Faf erence 3.
Subsequently,,
additiena3. p:oposed changes we:c p:ovided by Faference 8, with supplemental infor=atica in support of those p:cposed changes being submit'ted in P.eforence ?.
Tha f cl*.svi..g part. graphs provide technical evaluaticas of the changes prepoued in 7.eferences 4 and 3, as supple ented by ?.2ference 9, which are t.pplicacle :: Appendix J.
3.3.1 Li-i-ine cc.ditiens for cmeration er Tech.ical evaluatiens of 'the p:cposed changes to the Limiting Cdaditions for Opert.:ic sut=itted in F.cf orence 4 a:e centained in Table 1."
Opecifica:icas 2.7.A.5, 6, 7, and 8 and 3.7.B.1 a:e outside the secpe of Appendix J a.rd tne cfore have not been evaluated.
3.3.
Se rve.11anco s suir e:2nts T4ch..ical evt.luaticas of the picpcted cht.nps to de Surveilitnco 7.2 quirt.-
~~.onts :.c:=i :ed in 74f erence 4 a:e etntained in Tt.bic 2.~~
Specificatiens o
4.7.A.2, f, f, 7, and 4.7.3.1 are outside the re p o* Ippendix J and the:efore have not heen evaluated.
3.3.3 M:nti:ello Containn. ant Penetrations In Taf t:ence 4, t:Sp subnitted a revised Table 4.7.1 (Monticello Contain-cent Penetrations), along with explanatcry notes, identifying all penetraticas t
enat t.:e :ct ed in 4::o: dan:e vit Appendix J.
P.:: th e r 1 ' a-" ~ ' o n on the. m. e
.... ?.t. - Dw :. Cenar
. :~, % un.... nu
~~-.:.m. :..e. o -:,,a deve;:pne..: cf :.e regi:c:2nts to test theta panetraticns was cu:nitted by S3P in'..afersnee 7.~~
The table has been :eviewed and fcund to be accepta=le cubject :: ce: ain =cdificatiens baced en the deter =inatica of acceptability '
cf : pacific exe ptica regests evaluated in Sectica 3.1 cf this :cpor end the p:cptsed piping ::difications evaluated in Section 3.2 cf this cpert.
3.~3.4 Duration of the ?/ce A Test In 7.ef erence 8, ESP p:cpesed to change the, technical specifications for the.%:nticello plant to ter=inate the contain=ent integrated leakage rate test (Type A test) in less than 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .
NSP p:cposed a tes't duration of at least 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months and the accu =ulation of at least 20 sets of data at app cxi=ately.
equal intervals. Obe p:cposed cethod would allegedly ace.:=ulate enough data to verify that * ~sured leakage rate, at the 9 5% confidence level, would be less than the test acceptance' criteria.. Additional infer =ation relative to this p:cp sa.1 was p:cvided by NSF in P.eference 9.
' e....... e h.
. s t *. r. w
' rr n O o gestion of perfor=ing Type A tests in less than 24 heu:s is Ming -
~~cv;c.;ad by the NP.0 stadt on a generic basis.~~
Consequently, K$P's *p:cposal is n: evalua.ed as part of this report.
t e
P b.
e-e e
.O e
i p% -.
.... I.*3 ".'*[. " E. tt t *
~~h (2 n'.~~
f
. :.w,
":-m, m.
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w Fre w.4 C % ear *e
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t, f e t t ! c C-- f i t f r a r * :
5-r a t : q A;7. J SW.,
f e.
M.
F.W ' s Pre e ed Wrdia -
Ami f ea' ! = _
!T* Tv e ! u e t in 3.7.A.3 3.
ContaL*. ment leatage rates stall be
""his prep se-3 revision is a:certable. It limited ton conf e r=3 to the reTairements and defini-s.
As overall integrated leaka p tiou cf App rsfiz J vith the erception cf cfr tse reTaircrants !=r the testirr; cf u in 1.
1 La (1.2 Nrcent by II.K steam isolation valves. A reTJett for weigt.t e.f the c::ra.tair:sent air ere.qtion f t:r.a the ?fpe C testing reTaire-Mr :( bcrars) at Pa (41 peig),
ments of #.ppendiz J vita regard to tr.e '
cc w.in steam isol.ation eclees was se:mitted 2.
1 Lt a t a r educ ed pr e s-
~~.M by N3P in F.a f e t erste 5.~~
rn: f:rmt this sue of Pt. (20.5 psig).
f:.J exe :ption revaest to te a:cepta.mle in section 3.1.7 cf this re;cet.
b.
A car:=i. net le n t ag e ra te o f C. 6
.3.3 1.a ter all penet:stions ared valves III.C.3 ne edus of La (1.2 Nrcent by weists of (az ept esin stese isolation the contain:::t air Mr 14 toara) is a valves) su:$ect to "ype 3 arri C typical value for a centainrent su n as tests wbec pressurited to Pa.
tie cent.01. vent at the M,tistilo p11nt.
D e limit of 1.1.5 scf per b x fer sain c.
11.5 n' Mr bir for any one stea.m is lation vdves has beta fearr! by
~~s. tin stes.s is.oiation vtive vsen past experience to te a valid criterLa tested at 15 psig.~~
~
fer the e: tytrale leetage f ec-t the 4 vL.1ve R.
vben eitter (a) the everall integrated con 41 <nt liar.ase rate er.:wdierg 0.75 1.a ce C.75 it, as applicahlei or (b) with the mezzurd c:wcited leakage rate for all pestteatto..s usi vv.1rea sut;ect to ?tpe S a:4 C te s1 s er:ers L r1 3. 6 Le,
or (c) a a41n steam isolation valv, l e st r a t e e r.c ee! L-7 1.1. 5 sef M r beu r,
restore the lark =1e rats (s) to vitain me:eptAdle 11mit (s) prior to ircreasing tie ree te; ecols.nt te*;< ratae adeve 21: T.
~~1. 7.1.~~
4.
L e c:ntalm. nt at:1cet st.:11 te 1:.teaction b cf tais pr:;cct4 reticica is c;nralle vita una: eptanle an$ e:mld te redif f ed
-:n tatt the overall lettste rete te linited a.
!.sta 6: ors closto er:sFC mten to C.*07 La an dis: tass d in Se:tien 3.1.
tne airl:et is t<irr; used for ter-of tait repset.
72.e ree.41nder cf : e ;r:--
ul entry a33 exit, then a least
osed revision is considere J necpulle one airlocs 4

n: saall be cload.
alt.%Wh the evaluation cf these itu.s is b.
An evers.11 africet leakage rate ::!.5.3 of 10.0514 et 13 Mig.
!!!.C.3 c.
All interlocks f arv: tion as designed.
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s-5h con es inme_.t ) e e up e a te s' stall,.
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4.7.A.3
[ so te*5nsg ate 4 at t2fs 'N110.e!M test '
</
% jrfu.e a:.4 stall t>m' desar=/s.4 ts eare-
\\ ' 3' raerye wits the criteria spect!!.4 in
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<, %;;5vi1. J o! 10C"P.f0 geirr7 1!::e met.vas /
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'g r ec=pmeb t in AM1' 84 5. 4-6 72:
n'
~~uftri t e Iirst r$f.eling octt III.A.4 a.~~
~~r t~~
(.
~~age folievirs the a& pticn of this dance with Appendiz J except that this q~~
~~l epectfication, a Type A test sta.11 testing is generally done during the con-j' ?~~
~~,w Mrforwed at a pressure Pt of tainment peentational tests. firew the~~
~~0.5 psig arif a soccewi test per-va.lue of Lt was rnt determined at the g~~
lct>d at a peslate of Pa cf 41 h:*nticello plart duzirr; preeperational T[
y l
peig. te stutsue allc wahle test 3
\\,i 1.amage rete. Lt. endi de deter- '
J '.
testiin, there is no krewn reaeen v y it a
V
,*nt,et t., i rre sus pently. n e pri:pos+d
. ca alaed < v/. :ctdarse wit.h Sectiord ',,,f cificatJ.:rn there fore is accept:21e.
4 ZZZ.M / sal (12.,,1 of Apper>tta J.
(Fctie ne EC staff is presently sravirq
['y { tcytsd a require >+nt t2at Type A tests be 3
4 (('.
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s g
3
(
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s te( *r.l.rt,1 r;<=ifi=ctica ett.nes of this r
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r.t)are armld 'A made ia f all review of S'
'gj tais pstuttal rest.latics eaa ge.)
v w
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e
's' (h D 1 (al no.popstJ tvecification is in sera f t.11cwir:1 the test op*<ified %s b.
I r.
4.7.A.J.a arcyt. three Type A tests staM 2re corvfuhad at 40 013 me.ta(/ f d.; ace with *pper4Ls 2 armi is acce;tas;e.
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intervals darLrrg saut.fovn y)
Fa or pt dari.97 esta 10 ye{t either (/
g i i u,ser.
6 5
a vice part.t21.
Cne of taene,t tata A/,
t i s'u ti t>e cmdsetad during the shut-d
?.s ',
.iwn fcr, =:a 1*<-yeas plant irr-G',
s
[;.g servfce ir.xpectLcn.
, t I
+
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If A..y Tyig A test f ails to 11!. A. 8 Se pe;eted rpucificatien is in a~rer-i meet the aces;tstre critaria of dars:e vt,t.c, ;*ms:fix J and is acceptable.
C.75 Lt far reda:rd prerrute testa lt at Fa, the tett remedcle thall s**
I revie*+d 4.nd 4;vroved try the C.q. i 3 ccmseta e tvi[ ( -
+,*.
Ih *)
eisstoo. If - tw a.6:
-N A-te s u f a n to me t tz. mertl t e
~/.
criteria, a Type A test shall te (/
,k performed at least every it.edtas k
untut=e=ecutiveTyp.,'Asgith
/, 8 3'
see t the nece pta.vs e er t re tis 9 h /. / i.
voicy tise the s:hedute epecif y [g i
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in 4.7.A.J.3 may t4 resumed. g' yy su r
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Nit't Fr-.-*H Wrft-e sceli-rei.
r7 rnig-g I
4.7.A.3 d.
the accura:7 of e n h */pe A I:1.A.3 ne pectosed smification la in se::r-l l
C:nt.)
test shall be verified ty a
.;71e-dante with A.~.p.endb od is a: epittle.
ment.a1 taat weich:
1.
Ccafiras t.be ec=.: a y of I
the tes-tf rtrifyirr; that a
the dif f ere:ce t* tween the su;pleeesta.L da24 a s1 the
?rpe A test data La within
~~0. $ 1.t for reduced presture tests at Pt or vittin 0.15 for 14 for peak pressure test at Fa.~~
2.
Is of sc!!icient datation to estat114h ae:.ttately the charge in 4
lea W e acte be*veso the
?/;e A test armi the sa;';1enantal test.
3 74tattes the rate that
]
gas is inje:ted into the c: stair.nent er tied f acz. the cost 4tr.sen h 1..; the, sc;71esental testi*tc%
eT41ra. lect to at least 25 tercent of the lestege rate measured duzirs; the Pfpe A -
te s t.
e.
Type 3 arid ifpe C' testa shall-III.D.2 The preposed sp+:ificatica is in eteor-be coada:ted at intervals tus I:1.D.3 darce vit.h AependLa J ard is accepudle.
Srestar tian 24 mmths, steept for -
Table 4.7.1 is evaluaterf separately in te s ta of it.e contal..aut airlo:s.
secties 3.3.3 cf this re;crt.
u.d rA411 ter: lade all tasttste ex.-
ger. nta lirted is tr.tle 4.7.1.
f.
Type S sad ing C te cts rar.11
~~.3.2 St Fr:Msed :pt:1fierf ten is in a::1r-Le enda:te-f at Fa. (2=e rt f or rata II:.C.2 etn: c rita A;paediz J of is s: t;u:~~
4 steam is.caati n va.1res ard tag air.
rytlustions of the test ytescures for-lost.
P:2:7s of airlocit s are contain.d 13 Se.*
Lient 3.1.7 arri 31.2 of this report, e e c;,: tite ly.
+
,.... F*- @ :.a. *:tt tr:n Ctm!
. y w w % %.< enue e
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+,
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)
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,g w
r i
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y 4
.a
'P
+ 77 App. J Sect.
'[
SMt H.
M'?P's Prex**f Wed f M Arplicable
??C h aluation z
4.I. A 4 4.
to cont.ainwat airlock shall be 75e ;re;csed steification is not an demonst:sted cNeable bys accap*able exe rption to the rgirements of A;pendix J.
In S;ction 3.1.2 ef this a.
At least occe per 6 months,py III.3.2 report, TPC fouM.that the 6-m:mta test coMuetity; 'sa overall ai:1cct 1ssa-\\ ::.D.2 at a pressure of Pa is essentia.1 to an vie test at 10 psig ard tri verify-accu:ste a:ecrantirry of the inte;rity cf s.
1.w that the orerall leakage rat.e the airixt assembly aM aust be perf=rmed.
is vitala its limit. If the ai -
r70 further found ti.at !cP's prepesal to lect is in use,. and. entainment test the dryvell airloct at 10 psig every 3 integrity is required, the airlock deys een the at:lort is in use eM contain-snall be tested. eve.y three days ment integrity is req ired is accep*41e.
c: af ter enca use, vtichever
" tis Fre;csed wif t:ation sberald N :::dified interval is,greatte.
no::erdimly.
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+
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e e
+
1 e
lb
,e
\\
.A
~33-
...- Fa n'4

n ett tr..:5 Ctn:tr-6 ><w y N %w mr. a -
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.--a....=
.e cut: an:iin: licencing submi,tals rega: ding the i=ple=entation cf 10CIR50, Appenfix J, Centain=en: Leakage Testing, at de P.cnticelle plant have ceen evaluated, including requests for exe=ptica f:c= the regire:ents c'd Appendix J, p:cpesed piping odifications in c: der to cenduct regized tecting, and p cposed technical specification changes relative to the centain=ent leakage testing progra=.
~~"'he following conclusions have been~~
~~cached:~~
Kacuests fer F.xc=ction o
Instrument lines do not require Type 3 testing p:cvided they a:e exposed to Type A test pressure.
o Tasting cf the dryvell airlock at 10 psig every 3 days w. en the ai:-
Icek is in use is acceptable because it satisfies the testing regaire=ents of Appendix J.
A p:cposal to perfoE the every-6-nonth airlock test a: 10 psig' o
rather than at Pa is not acceptable.
The every 6-cath at:1cek test shculd be perfer=ed at.a pressure of Pa in accordance vi.h Appe, dix J.
ga.+y..
o A c:e censervative extrapolatica for the cc:: elation cf airlock tes:
results a: 10 psig to results at Pa should be used.
The acceptance criteria at 10 psig should-be 0.007 La versus 0.025 La.
o Testing of the dryvell spray and tcrus spray and recir.culation line ircletica valves is reTaired by 7.ppendix J as fclicws:
Ph 2006, 2007, 2020, and 2001:
No tecting regaired because cf a water seal f c: the KE? pu=pu usder pcst e.ccident ccnditions.
E>-200S.and 2009: No tecting required becauce of a liquid scal'hy the level of v:ter. in the suppressien pool, provided the packing of these valves. is not expcsed to leakage cc=ing frem the spray line.-
140-2010, - 2011, 2022, and 2023 :.Should be Type C tested in the.
direction of accident prescure c: pneu=atically tested so that the valve packing and body-to-bonnet seals are exposed to ces:
-precsure.
9 -
g
...!.: : Wi..:.t:.: :n C.:et.
......,n.r..,.,,
a-no exceptien f c= Ap,cendix J is necesc2_y ft: the :cyc :c-directica o
testing cf isolatica valves cf penetra:icas.X-25, 26, 270, 27I, 27r, 41, 42, 205, 214, and 220 since Appenfin J permit this tacting.
o Ixe:ptien f:c::t the requirene..ts of Appendi>: J to permit reverse-dire:tica testing cf the indcard isolation valves of the reacter water cleanup syste=, the fico: su=p discharge, and the equip =ent su_p discharge is not acceptable.
"'hece valves should be tested in the direction of accident presse:e.
e The core spray testable check valves are not relied upon to perform a containment isolatica functicn and do not require OIpe C testing provided that the =oto:-operated isolation valves ou: side centainment are. ?fpe C tested as p:cposed by NSP and that energencf p:ccedures
,P require clocu:e of these valves as soon as it is deter =ined that core spray flow cannot be established..
"he LPCI testable check valves a:e nce relied upon to perfor= a o
centain:.ent isolatica function and do n6t recnire ?fpe C testing provided that the moto:-operated isolation valves cutside contain= ant are Type C tested as proposed by N5P.
^
Continued testing of MSIVs at 25 psig in lieu of the 41 psig is an o
acceptable ' exe=ptien f:c= the requirement of Appendix J tocause it results in a conservative determination of the leakage rate of the valves.
i r r.
Isolatica valves in lines ter=inating belee the icyc1 cf the cuppres-cion pool do not-require testing in accc:da.nce with Appendix J because these valves are not relied upon to perform a' centain=ent isolatica fu:.ction.
.o A requested change-in the value of La vas not evaluated because the
~
value ' of I.1 was not derivedsin acco:danca with Appendix J.
Fr:; cod Pirin; Pedificatien-ine p:cpesed ::odification to permit tiesting of the instru=ent air o
isolation cont:cl. valve is acceptable.
' The proposed ::odification of the cooling water supply and return o
lines fe: the drywell fan coolers is acceptable.
.o-The proposed ::odification of the. TIP penetrations is acceptable. '
The propcsed ::odifications to permit _ testing of the CRD.bydraull' o
c-
~~eturn inboard check valves is acceptable with.t.% ex:eption'that the additica of a second test fitting between valves Cd-34L and CRD-31 should net be. included. de~~
..x
'... P.** n d ~" E titl'tn u ",'ef ~
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g
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i.
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..u u..
2....
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v :- >-
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,. w.,..... 2 a..
0
'he p:cpoced modifica:ica to add a =cto:-eperated inolatica valve devnst:r.a cf TICI-:.0 (plus a test connectien) is acceptable p cvided tha: the valve will be aunce.aticallv. shut af ter an accident wheneve the EPOI syste is not in operation.
Alternatively, he addition of redunde.nt isolation valves in the vacue= breake: line is acceptable p:cvided th:t the vacuu: b: cake: fu.ctica cf this line is no: 1 cst.
o
'he p:cpcced codific.tica to add a :: tor-cperated isolatica valve downstrean of TCIC-10 (plus. a test c'onnection) is acceptabic prcvided tnat the valve vill be autc=atically shut af ter an accident whenever the RCIC system is not in cperation.
Alte: natively, tse additic:r of redundant isolation valves in the vacuen breaker line is acceptable, p:cvided that the vacuum breaker function of this line is nod lcst.
o
'"he p:cposed sodificatica to per=it testing of the manual isolation i
valves in the de=ineralized water sue..ely to the d:v.vell is acceptacle p cvided that valvo 08-58 is capable cf being tested in the reverse directica.
o The p:cposed codification to per it testing cf the isolatica valves in the -service air supply to the d:i.rell is acceptableip:cvided.tha:
valve AS-39 is capable.cf being tested in.the reverse directica.
rr >-
The p:cposed codificatica to permit testing of the tcrus instrument o
air supply centrol-valve is acceptable.
P cer..,srA Techhical 5:ecification Chances o
Applicable pc:tiens cf th'e proposed chi.nies to the'Li=iting C.-."..'...' '.-. '. ". C,..... '.' c. v c e.'. ".d.o '......-...2.'.e c.' 1..u...-...c n
. cf the accep 4.c 2. criteria for,te, sting airic,cks at 10 peig, which
~~i...ld~~
.6..s' s24e: a
.4. -
. a
. S.4... e.re. : - :..........3..e e-.64e.c.
'o Applicable pc:tions cf the 'p:cpeced changesi to the. surveillance -
Requirecents were found to -be' acceptable with exceptica cf the require =ents for testing airlocks, whichichould be-redified in:
' accordance with 'Section 3.1.2 of this reps:t.
~
o The. revised Table 4.7.1 - (.Wanticello Centainment Penetrations) fis
.acceptanle, subject. to ce:tain ::odifications based upca the--fi dings n
of ~ Sections 3.l' (requests fer exe:ption) : and 3. 2 - (p:cp: sed piping--
modifications),of this report.
t
'-36.'
t
...TM s
... ^ T.dli, R-:m:h an:d s :. m e. m
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4 _,.
. c..... - r.,.a ag.---
4...gg
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. e r.,
a
..s u.
~~g.. g~~
.-y
( m. ;,,.e. n. c.
. i 4.3
.ie e,.
~~6. m,~~
,.....,.g.,a"
". C ". r V.* _' ".P. ". :- d '. e ". ' ".". e ' ". '.e a
iscue is being reviewed by..e h?.C staff en a generic basi::.
I'r 'it e
c.h
.... ~.... n, e... h e...t Y' @ i [$ f.. dh N*M$
(l%^
4
-re. -: a-,_
n.
.=_v-_=..--e
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(.,.
)
~~.....,s,-_e M::e: to L. C. P.a-;e: (S37)~~
Auge:: 5, 1975 2.
L. O. hye, (N3 P)
Latter to K. ' R. Goller (NRC)
Septe:ber 19, 1975 3.
L. J. *n'achter (NSP).
. Le tter to V. Stello (NF.C)
Janua:f 30, 1976 4.
L. O. Myer (ESP)
Letter to. V.. Stello (NP.C)
.v.ay 4, 1976 5.
L. O. Mayer (NSF)
Letto to V. Stello (SRC)
~~Subject:~~
Reque::s fc: he=ptica.
.u., s,-. 3.c e 6 2
6.-
L. O. Kaye: (NSP)
L2 0:e: to V. Ste'lo (NRC)
Schjects' Pir.n::cd Modi-ficatic.s.
!'.ty, 5, 19 7 6 7.
Sr----cf of Meeting to. Discuss Monticello 10CFR5 0,
. Appendix J, herption. F.equests Nove.cle:.12 i.197 6 S.
'. C. hyer (53P)'
~.2ttersto Direc:::, N?.R
--ee_.c..,,
o# o e-~
n P
9.
L.l O. Kirc: (ESP)
-Lctter t: Director, h?.?.
March 20, 1975
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s
APPE! DIX A CONVIRSION OF FIDUCED ??2SSU?2 /.IR LFAKAGE ME.SUR_N..'IIS TO EQUIVAI.I'rI FULL ?F,'.SSU?2 AIR LI.EAGE rr r..
C.E 17, 1980 t
l 1
' Dr. G.'?. *.tachtcll
-Franklin Research Center 9
e
't L
'i' a
a a
e.: o. :."..~,. a n'.
. 7v n's:
.. t 0 n. r.. s r.u...y. r. e.m.... : : e.. r.,
i u
+
~~n pneur.atic leabge :esting in which applicatica of ?a psig is called for.by Appendix J, it is scretimes necessary to request an ex-e ption that per_its pecu atic testing at a loser pressure, Pt psig.~~
Le' leakage rate, Lt, measured under test conditions =ust then be con-verted =athe:atically to the leakage rate, La, that vould occur if the l
pressure vere equal to ?a.
It is essential that the conversion be con-servative.
3:t.is. the calculated value of 1.a =ust not be lower than the actual leakage rate at Pa vould be.
On the other. hand, the conver-l
- sien should not be more conservative than necessary in the light of l
available data, because excessive conservatiss could frequently result L
in the interpretation that a given leak exceeds its -wd un allevable i-li=it: when in fact it vould tot cree 2d that lini if ?a vere actually l
applied.
t l
.ne =eaning of the expression "if Pa were actually applied" should _
l be carefully:censidered.
n e assu=ption.is nade that che geonetry and dimensions of the leakage path would~ be the's-a vich Pa applied as
- ]* **
~~gn vich ?t applied, or.that 'any changes in geometry would not increase the~~
~~:dage rate.~~
~~In the case of airlock doors in which ?t is applied in~~
~~he reverse direction,_ opposite-to the direction in which Pa vould be~~
. applied u= der function conditions,- the use 'of the reverse ' direction of
~
application of pressure is expected to tend to ' opes 'the seal and 'i=creas'e r
t-the leakage. rate.
Under function conditions,=in which pressure is s
i
- applied in the ' fo.ard direction,- the.sekl.should be imp;cved if ;it:
ne expressi' n "if Pa vere actually applied" in this changes at all.
o
' case = cans "if Pa vere actual 1 77 applied'in the-forvardL(normal-for.
fnnetion) direction."
In the case.of valves.and-other penetrations,
'it -is.~ essential'that increasing the : applied L pressure fre= Pt. to. Fa h
-not change the geonetry so'as to increase the leakaSe rate. 'For exa=ple,
~
~
-increasing the pressure on a. closed valve should t.end;to i_. prove its-c y sealing at the surfaces. that provide: the. seal', and also2 in any' other :
t 2
-t g,
. A-13 c
y i*
y
+
-.a
?w Q-^
N
.'a.O k.
.t
-m b
4
.-.......u.
e..
u.
. e.
..,..e..'
~~~ ~ ' ' '~~
m
....es.-.~r~.'.'..'-'"
~~... * ~..'";~~
%..a-'.*=.
s.
~~a. r-..a~~
+
g.'. i
. %.. c c.. 1 a.rr-of.
33,..
3*
g - -- -
_.gs..
r--
e
..s
'ag. w.&-a r*-
s,. 3,
~~., s.~~
.a
~~s. s...,,..;~~
,.,,.; u g.2 _,
.... a n..
~~... e, <.....~~
e..<.
. o.k e.... a.
E a
..: e
.s.. e.......u.
a
~~c. c,.., c,.,... a. u.~~
.a.s e-. r. e. -
~
. n u
,,, ;. (e),
..ce,sc.. c..
~~s.,~~
s r
3 my s:r. cs :he fell:ving rule for :ests at less than functie: differenzial pressure:
"I.eakage tests involving pressure differentials icver
- than function pressure differcutials are permitted in these types of valves in which service pressure vill y
tend to d' '-ish the everall leakage channel opening, as by pressing the ~ disk in:o or.onto the seat with
~~cater force.~~
~~Care v:1ves, check valves, and globe-type valves having. function pressure differential applied over the seat, are e -*- ples of valve applica-~~
~~1cns satisfying this requirc=ent.~~
hen leakage tests are nade in such esses using pressures lever than

fune-
~~1ca. ex1=.:= pressure dif ferectihl, the observed leak-3 y~~
age _ shall be adjusted to functic: --w'
.:: pressure i
different:al-value.
This adjust =ent chall be nade by
~
I calculation appropriate to the test =edia and the ratio between test and function'p essure differential, ass =ing leakage-to be directly prcportional to the pressure differential to the one-half pcVer."
1: che d'e-"celen h ipv, i:lis shown that ii (a) the tes: uius-
+
is air, (b) Pa is -appreciable c:= pared - to one 'at=osphere, and :(c) the (leakage pa:h is. such as ;to produce laminar viscous flev (i.e., capillary-4 e
lika :::her than orifice-like), the calculation appropriate to"this tes:
=.ed1= yields a substantially higher calculated value of La :han would.
be' chtzined by. ass' '"g leahags to be direct 17 pre.pertional to the :p es '
1 sure diffect. L:1 :o che one-half-pcv,er. '
7 air; fic. t'rcugh c: criffce, assi ' g unifor= flev veloci y
~
C
' over the crifice area,;the nass Lflow rate per: unit: orifice area:is ev, 7
.is):he, density of air in _ the crifice and <v isivelocity ini the-vhere :
~
r crifice. 3.scu=ing that the discharge pressurelis Fat = 1:atnesphere and t the 'scurcei ressure'is Po, where ?o and ?at'are bothfabsolute pressures,
~
p
~~f,v iS given.iD V.~~
t p
q
^
.(pv).2
. 2w Ta: -
1Fo<
c
.( A-1);:
- l.
.G-1
-- ',E 6
, c..
. T.
- C 6
I 4
4 i
(
t
.9
~~N mi~~
~
A s.
_a t
f
.f.._
h
(
,,,j e
kj.
7
[
-f f
7 g
~~4_./~~
T
.; y.
'q; a,_ ;,
..,, -., +. -..
im w
v r
+ e-w-
W'
c r-
.-he:e - o 1.1 is :he specific he : :::i: f:: air, g = 32.2 i:/ scc is the t telerati:= ef g avi:y, T 1 ^ sour:s (upstrean, at ?) tenperature t ' ?.), 7 is absolute pressure (; s f),
F., = f2..6 i:-lb/Ib'? is the ;ss cens:::::fer air and G is given by y-1 v-l e,2 y
y x
x
-1 r
G (A-2)
=
f at.
Fo
.Fa t
~~2 x =~~
Pe
?e = Pat for subsenic flow l
l l.
Fe = 0.5283 Fo for choked flew i
i Choked flev ccurs when Y
~
Fat Y+1 y-1
= 0.5283 Fo 2
[.-
s 6 is proportional do '6/. [Fo-?at.
Values of 6 are listed -in * *
/
7 5.1e A-1.
TU~~, - the li=iting value of 6 for s=all' (?o-?at),. is o
r'T-/-1) / y -
~~0.5345.~~
~
In-Table. A-1, inspection of 6//G shows the accuracy of the-t o
assu ptic: that;for an crifice-like leakage flev resistance, leakage
= ass flev rate is prcportic:a1 to pressure' difference to the o=e-half f
p cver.. Fer e a=ple, if Fo =L60 psig;(Po-?at-= E0 in Table A-1),
4/6 ~ = 1.210.
F.r:rapolation of n:ss flev rate =easured with ?; =
o
- 15 psig to = ass' flow rate predicted for ?a = 60 psig, vill underesti= ate the ::. ass flow rate by the factor. 0.968/1.210 = 0.80, or 20%.
I The. foregoing argu:ent tacitly assunes that the' orifice coefficient
- is.'e.l.0.
Ecuever, :he sane conclusion cencerning extrapolation' frc=~-
s-lev values ' of Pt to high values of Fo can -b4 drava!1f the orifice :ccef- :
ficient.is assumed-to be~ constant, 1.e., _ independent of Fo. ' Cen s e quent.i y',-
'r r;
L'
.A.
K s.
=
.c n..:-l.
,av.
,,,. :s,,.
n.
!,. e...,: :n. :..
w.
.. s
~~..- n. e :. :s.- a.. f.::~~
..: :.. -. = T..:. m e. t. u:. ')
. s s
y t., s ;. )
y
( 0
( I.:
t
.a O. v,,i 0.:-.-
1.CuG i
0.5332 0.998 5
0.5222 0.9E8 13.3 0.51E5 0.970 13.4*
0.5184 0.970 15
~~0.5176 0.968 0~~
4 0.
c,.c,,0 0.3/c 25
~~0.5345 1.000 30~~
~~0.5490 1.027 9-o 0..g. 8~~
~~1. 0 o-,/~~
~~e, 40 0.5811 1.037 45 0.5977 1.118 50 0.6143 1.149 55~~
~~0.6307 1.180~~
'~~
c0
~~0.6470 1.21 0~~
'ChcKEc ficw i..,,
f:: leakage paths that are known to be entirely, orifice-like, the assu=p-tien tha: 1ezi2ge cass flow rate is proportional to pressure difference to the cue-half power gives a reasonably accurate correlatica, underesti-a:'. g the. leakage. ass flev ra:e by a. n s: 20T for ?a < 60 psig.
To-c:rrec: the unia-= e '-+
e,_ the fae:cr,(r'C/r' G )a/(<,G G )t has to be applied, o
o whe a a and : :can ?o-:= ?a and ?, reg ectively..?.eferences;2,.3, and 4 discuss ::he 'conversien f=r alas to _ bc applied for varicus fluids (e.g., air and vater) for variouc types of leakage: path.
Fcr viscous flev ef a gas,
~~the ~ cass flev rate from a source at abcclute inlet pressure;?~~
to absolu e 2-outlet pressure ?gis-proportional-to (?p - ?{2). lThe proportionality factor is'C/uT,'where C is'~a.fune:ica of geenetry, T:is absolutecte=pera-
~
? ture, ' and u is viscosity 1(which 1s.a' function ' only c of ' te=perature).'
~
/sssi-4 g that test pressure et psig is. applied lat the ss-a: :c pera -
tur'c acL:ha: at which1 function pressure Pa psig:is applied, and ass"-4 g-J
~~A-4' 1~~
g w:-
-- s
__d',
m h-J
1 fr :ncr.hi: the devns: rec = pressu e is 0:e arresphcre, Pa: psia, then
':*.. ratio cf
'ss flev ::.:es is a
(?a - ?a ) ~ - (Fat) ~
u -a)
(?: + Pat) ' - (Pc;) ~
'If the tenperatures are not the sare, the right side of Equatica (A-3) has to be =ul:1 plied by
'u(Tt)- T:
p(Ta)
Ta (A-4)
Assuming that T: = Ta, Table /.-2 shows the ratio ::a/E: for various values of Pa and ?:, along with values 'of (?a psig/Ft ps'ig) /2 Pa is taken to be 15 psia in calculating $a/E:.
Table A-2.
ha/5t for various values of Pa and Pt.
(m. /m. )
a t
ma/.it (Pa/Pt)1/2 Pt Pa=50 55. r50s,
-50 So.
(Pa/Pt)1*/ 2 60
_50 55 60 (osic).
( p_l IO) _ _
5 22.86 26.71 30.85 3.16 3.32 3.46
-7.2. 8.i 8.9 15 5.93 6.93 8.00-1.83 1.91 2.00 3.2 '3.6
.4. 0 '
.15.
2.91.
3.40 3.93 1.41
~~1. 48 ' l ~. 55 2.1 2.3 2.5 35_~~
1.75 2.05 2.37
, 1.20 1.25 1.31 1.5 1.5-1.8 45 1.19 1.39 1.60 1.05-1.11 1.15
- 1.- 1 1.3 1.4 In all cases,_the-assu=ption that = ass l flow rare is~prcpor:icnal
~
O to pressure.differencial to the. one-half pever. is' usconservative for.
purely viscous flow.
For Pa = 60 psig and Pt - 5 psig, fit is'unconserva-
~
tive by a factor of _8.9.
1 RECOMMENDED PROCEDURE.
. ;.ny one of the following procedures,[ A, 3, - or C. should be, a'dopted.'
k
, i a-5.
.____L
. s. e.. :.~, -
.... c e... e.,,
_.. _.. -......<.,.c,..,,.3
......___,..c.,__s..
..a.
...u....
=
..,=._.
_g,.u.,
.a. u..... _ a_
~~u.,.~~
.s.
..w..
._..a,
_..w s.,
.e.. 2 _: e., e.
e.._,._,_.__
-..,u..__
. u.
. e _3 4_,..,
r.
3
_ea;.a a_ - o-e '_i..-
.-.e -.e c'-
<>d
.. ye _e_
. e. y._ z.....:
u e -.. _ -
a-_
s.*. ~. a # ". e a _o,.4. *.a i c a... a _' a _ '_ -
.c k e e s _ _e k '.'..= '.. a_ d_.
v.*.. e _- _ e.
~~k. a.~~
c r.= n to ensure ths: experimental or fice-like leaks are act used :o repre-d sent act..al,- pctent'a'ly capillary-like or viscous leaks.
2 Conservative Theoretical Correlation Use Equa: ion (A-3) as the cor-elation fornula, including the.
factor (A-4) if necessarv..
C.
Measure Leakage Characteristic For a ;;iven penetra:ica, several values of ?: =ay be applied, sc
- th:: an e=pirical correlation can be established.
A statistical analysis cf the data vould be recuired to ensure at a 95% confidence level, that the predic:ed value of ca~is not exceeded by the actml value of na.
i..,a n.r:nzdC 5 1.
ASHI Code,Section II, parcgrcph IW-3423(c).
2.
Anes, J., "Cerversica of '.eah Flev-Rates for Various ' ?'uids and
- D' f faren: ?rcssure Conditicus," 1966, EUR 2932.e, _ ORGII. Program, s,.c :s c.b_' _dek...a t, I *. - ' v..
't t'. s..,. "? ee ?,..c a.
~~3. ;..., - 9 41... o, J...,~~
~~n.. l.~~
.A.. v_.,..-
J-
.f.- _Tc
.s,
-v.a..._
a e.
c u"'-...e 's
.de.s c.~ Steel C.... <+. -.. 7e.c. s e ' s.~.~_'.'.s.!_~.'., s.' s c '
-=-
. e :..., :.. a., a. e. _< _,.a c n, n v..., _c.s:,
p_s_<g_-
o.
.=<._a _ c..,_z1_;a, a.
t c,_
m mr,
r..,._. _,., c,: 3.
u.
~~t..~~
Cottrell, 'J=. B.,, and Savelainen, A.'J., edi:crs, "U.S. Ect.ctor Cen-
-tain=cn: Techucle gy,':' OR'~ 'iSIC-5, Aug. 1965.
Chapter 10, "?erfernance-
-- ests," R. F. Griffin ' and ' G.E. Dycr.
Sections'10.4.5 cnd 10.4.6 adapted fren. Reference 3.
9
~
e
/
-A-6.
~
L
..lQ 't; 4
5
[
.mm
_a.,_m
.

v t e Letter Sequence Other
TAC:11134, (Open)
Initiation Acceptance... Administration Questions Answers Results Approval... Other: ML20090B443
MONTHYEAR1982-04-07 [Table View]

ML20090B443

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