ML19354E600

Proposed Tech Specs,Deleting Table 3.6-1, Containment Isolation Valves & Refs to Table

ML19354E600
Person / Time
Site:	Trojan File:Portland General Electric icon.png
Issue date:	01/25/1990
From:	PORTLAND GENERAL ELECTRIC CO.
To:
Shared Package
ML19354E594	List: ML19354E593 ML19354E597 ML19354E600
References
NUDOCS 9001310442
Download: ML19354E600 (15)

Text

5 LCA 190 o.'

Attachment B Page 1 of 14 DEFINITIONS REPORTABLE EVENT 1.7 A REPORTA8LE EVENT shall be any of those conditions specified in Section 50.73 of 10 CFR Part 50.

CONTAINMENT INTEGRITY 1.8 CONTAINMENT INTEGRITY shall exist when:

1.8.1 All penetrations required to be closed during accident conditions are eithert a.

Capable of being closed by an OPERA 8LE containment automatic isolation valve syst r

b.

Closed by manual valves, blind flanges, or deactivated aglomatic valves secured in their closed positions, except Cas pWde in T6bTe 3~6Mf1F_icif[c~atton 3.s.s.i.

1.8.2 All equipment hatches are closed and sealed.

1 1.8.3 Each air lock is 0PERA8LE pursuant to Specification 3.6.1.3, and fX.

1.8.4 The containment leakage rates are within the limits of Specification 3.6.1.2.

CHANNEL CALIBRATION 1.9 A CHANNEL CALIBRATION shall be the adjustment,. as necessary, of the channel output such that it responds with the necessary range and accuracy to known values of the pa'rameter which the channel monitors. ~ The CHANNEL j

CALIBRATION shall encompass the entire channel including the sensor and alam and/or trip functions, and shall include the CHANNEL' FUNCTIONAL TEST.

1 The CHANNEL CALIBRATION may be performed by any series of sequential, over-lapping or total channel steps such that the entire channel is calibrated.

CHANNEL'CHECX 1.10 A CHANNEL CHECX shall be the qualitative assessment of channel behavior during operation by observation. This detemination shall include, where possible, comparison of the channel indication and/or status with other indications and/or status derived from independent instrument channels i

measuring the same parameter, i

AmendmentNo.27,97,k TROJAN - UNIT 1 1-2 (December 20, 19 %

by operator action during periods when corttainmertt 460tation valves may be ooene.d under administrative corttrol, or 9001310442 900123 PDR ADOCK 05000344 i

P PDC

LCA 190 Attachment B Page 2 of 14 or operator action during periods 3/4.6 CONTAINMENT SYSTEMS when coMainment isola 4Lon valves are opened under administrative 3/a,6,1 PRIMARY CONTAINMENT controt, '

[0NTAINMENT INTEGRITY

[fMITING CONDITION FOR OPERATION s

3.6.1.1 Primary CONTAINMENT INTEGRITY shall be maintained, i

APPLICABILITY: MODES !, 2, 3 and 4.

ACTION Without primary CONTAINMENT INTEGRITY, restore CONTAINMENT INTEGRITY l

within one hour or be in COLD SHUTOOWN Within the next 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />.

SURVEILLANCE RE0UIREMENTS 4.6.1.1 Primary CONTAINMENT INTEGRITY shall be demonstrated:

a.

At least once per 31 days by verifying that:

1.

All penetrations (except those portions 1 ated inside containment) not capable of being clos by 0PERABLE containment automatic isolation valves and required to be closed during accident conditions are closed by valves sM blind flanges, or deactivated autornatic valves secured in their positions, 6xcept as provided in Specification 3.6.3.1D l g\\

f and 2.

All equipment hatches are closed and sealed, b.

By verifying that each containment air lock is OPERABLE per Specification 3.6.1.3.

c.

By verifying that valves, blind flanges, and deactivated automatic f

valves which are located inside the containment are verified closed d

i during each COLD SHUTOOWN except that such verification need not be performed more of ten than once per 92 days.

• The fottowing udves mat) be opened on an idermittent basis under administtative conttolt M05658, CV5659, M05656, CV5657, M05653, M05654, CV5655, M05651A, M056518, M05651C, M056510, CV5652, 8090A, 80908, MS013, MS014, MS015, MS016, LD001, LD003, SV6991, and SV6992. Manual Valve M0059 matj be opened under administrative conttot when personnet fire protection required, and non-automatic Power Operated Valves M08702 and M08701 mat) be opened during Mode 4.

Hjdrogen vent supptt) and exhaust vdves MO 10005,-MO 10006, MO 10011, MO I0012, MO 10007, MO 10008, MO 10009 and MO 10010 shall be normattij slosed, and opened onli when and for the duration of j

time actualltj necessari.

j

" Containment purge supptt) and exhaus.t vdves M010002, CV10001, M010003, and CV10D04 shdt be made inoperable (electric power or air supplies removed from T-1-UNIT 1 3/4 6-1 Amendment No, M (July 11,19M 3

their respective operators 1 during Modes 1 through 4.

Attachment B Page 3 of 14-CONTAINMENT SYSTEMS

(-

CONTAINMENT LEAKAGE LIMITING CONDITION FOR OPERATION 3.6.1.2 Containment leakage rates shall be limited to:

a.

An overall integrated leakage rate of:

1.

5 L, 0.10 percent by weight of the containment air per 24$oursatP,,60psig,or 2.

5 L, 0.07 percent by weight of the containment air per

+

24IloursatareducedpressureofP,30psig.

t b.

A combined leakage-rate of 5 0.60 L for all penetrations and valves subject to Type B and C test ds 1(entified_in TableDs when pressurized to P,.

APPLICABILITY: MODES 1, 2, 3 and 4.

ACTION:

With either (a) the measured overall integrated containment leakage rate exceeding 0.75 L or 0.75 L, as applicable, or (b) with the measured combined leakage, rate for all penetrations and valves subject to Types B

{.

and C tests exceeding 0.60 L,the Reactor Coolant System temperatur

, restore the leakage rate (s) to within the limit (s) prior to increasing above 200*F.

SURVEILLANCE RE001REMENTS 4. 6.1. 2 The containment leakage rates shall be demonstrated at the following test schedule and shall be determined in conformance with the criteria specified in Appendix J of 10 CFR 50 using the methods and provisions of ANSI N45.4-1972:

Three Type A tests (Overall Integrated Containment Leakage a.

Rate) shall be conducted at 40 10 month intervals during shutdown at either P (60 psig) or at Pt (30 psig) during each 10-year service peri 8d. The third test of each set shall be conducted during the shutdown for the 10-year plant inservice inspection.

TROJAN-UNIT 1 3/4 6-2 l

l

LCA 190

[-

Attachment il e

Page 4 of 14 CONTAINMENT SYSTEMS 3/4.6.3 CONTAINMENT ISOLATION VALVES LIMITING CONDITION FOR OPERATION 3.6.3.1 Thecontainmentisolationvalves6pecifiedinTable3 5 11 be OPERABLE with isolation times (as shown in Table 375;TD tes6 then or equal to the required isota-a APPLICABILITY: MODES 1, 2, 3 and 4 flon times.

ACTION:

With one or more of the isolation valve (s)(specified-in Table 3.6-1

~

inoperable, either:

a.

Restore the inoperable valve ('s) to OPERABLE status within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />, or b.

Isolate each af fected penetration within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> by use of at i

least one deactivated automatic valve secured in the isolation position, or c.

Isolate each affected penetration within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> by use of at least one closed manual valve or blind flange; or L

J d.

Be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in a

COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

SURVEILLANCE RE0VIREMENTS P

4.6.3.1.1 The isolation valves (s~ ecified in Table 3.63shall be demon-p strated OPERABLE prior to returning the valve to service af ter maintenance, i

~

repair or replacement work is performed on the valve or its associated actuator, control or power circuit by performance of a cycling test and; if verification of isolation time.

applicable, P

\\

4. 6. 3.1. 2 Each isolation valve (specified in Tab.lL3.64shall be demon-

/\\

strated OPERABLE at least once per 18 months by:

Eo l 1

a.

Verifying that on a containment isolation test signal, 1

each isolation valve actuates to its isolation position.

• The provisions of Specification 3.0.4' are not applicable.

Also this action-statement does not appttj to inoperable isolation valves reqarred to be open during a post-accident situation.

AmendmentNo.#4,Jh TROJAN-UNIT 1 3/4 6-15 1

(npril 22. 198 %

i

--#'t

$=

LCA 190 Attachment B 4

Page 5 of 14 J

CONTAINMENT SYSTEMS

(

SURVEILLANCE RE0VIREMENTS (Continued) b.

Verifying that on a Containment Ventilation isolation signal, each Containment purge and hydrogen vent supply and exhaust valve actuates to its isolation position.

A c.

Verifying that upon a Containment High Radiation signal, each Containment purge and hydrogen vent supply and

-exhaust valve actuate $ ftc its isolation position.

g 4. 6. 3.1. 3 The isolation-tire of each power operated or automatic valve dtTable 3.6-p shall be determined to be within its limits when tested pursuant to specification 4.0.5.

4. 6. 3.1. 4 Containment purge supply and exhaust valves shall be verified to be inoperable (electric power or air supplies removed from their respective operators) every 31 days while in Operating Modes 1 through 4.

4. 6. 3.1. 5 The Containment purge supply and exhaust valves shall be verified OPERABLE at least once per 9 months by performing a leak rate test.

In addition, prior to entering Mode 4 f rom a COLD SHUTDOWN condition Contain-ment purge supply and exhaust valves shall be verified OPERABLE, if valves have been cycled in Modes 5 or 6, by performing a leak rate test.

Leakage hi rate acceptance criteria will be such that when the measured leakage rate is added to the leakage rates determined pursuant to Technical Specifica-tion 4.6.1.2.d for all. other Type B and C penetrations, the combined leakage

{..

will be less than or equal to.60La.

The leakage rate for the Containment purge supply and exhaust-valves shall also be compared to'their previously measured 1?akage rate to detect excessive valve degradation. The Containment purge supply and exhaust valves shall not be cycled after final leak testing prior to entering Mode 4 f rom Mode 5, except as necessary to perform repairs following an uns~uccessful leak test during operation in Modes 1-4.

\\

~

AmendmentNo.28,7#,//(.

F.

TROJAN-UNIT 1 3/4 6-16 (To~v'e~mber 10,1 1

.D.

s "

)

TABLE 3.6-1 CONTAINHENT ISOLATION VALVES b

TESTABLE DURiis y

VALL

'U'2 ER FUf'CTI0't, PLAffT GPIliAli0tl ISGt; T;"j,

.ccen<.5 ;

3 A.

Contair.:nen solation 110 SSSS*-

PRZ steam sa#r.ple - Inside -

yes 10 CV 5659*-

I'RZ steais sc=ple - Outside yes' 10 l'.0 5655*

RZ water sample - Inside yes la CV 5657*

water sample - Outside ycs 10

{

!?0 5554*

Reactor ~ Coolant loop Sastple - Inside ye 10 s

I;0 5653*

Reac 1 ant Loop Sample - Inside

_s 10 CV 5655*

P.cactor Cc,nt Loop Sample - Outsi yes.

10

'E I;0 5651A+

Accumulator

• Sr.mple - Inside yes 10 1i0'5651D*

Accumulator "B" le - Insi yes 10 I;0 5551C+

Accon.ulator "C" S

-I de yes 10 3

g I;0 SESID*

Accumulator D" Sa:aple nside ycs 19 e

R CV $652*

Acctsnulators' Samp1' Ou de yes 1G y

• ?

CV 20113 S. G. "A" Staple tside yes I;. A.

p CV 2020f S. G. "B" Sa-Outside yes

. A.

[

0 CV 2014?

S. G. "C" aple - Outside yes

1. A.

N CV 2CCE' S. G.

• Sct.ple - Outside es II. 2 1:0 6716!

S. G A" blot:hrn.- Outside its it. A.

E I;9 23535 I:0 6717-

. G. "B" bloudown - Outside yes.

ro.f..

c-I;0 2310?

I;0.6710'-

S. G. "C" blowdown *- Outside yes it. A.

2RE 5-149 2C12' EE#

1:3 6719d-S. G.. "D" bloelown - Outside yes-fl. A.

eEU

'11') 23134 o5 I:3 507 Containment atmosphere sample

• E supply - inside yes 10

% e,

)* 5675 Cantainment atmosphere sample -

supply - outside yes 10

-l'0 5672 Containment atiansphere sample -

l rat.an n - inside yes 10 i

S.

,mz..-

._..i...

s m

,?.4

,J,.

s

~r..

,,r rf..

L 4

TABLE 3.6-1 8

R CONTAINE NT ISOLATION VALVES

-i 5

TESTABLE DURING

?

VAhLWUISER FUNCTION' PLANT OPERATION ATION TIME i

-i (seconds) i A.

Contal Isolation MD 5676 Containment atmosphere sample f

i.

return - outside yes 10 t

MD 5671 Co inment atmosphere sample 1

- outsIde yes 10 MD 5673 Contal t atmosphere sample d

return -

side 5-IG 5663 Containment a sphere sample yes 10 R

return - outs yes 10 y

g CV 8026 Pressurizer relief nk gas t

o i'

analyzer - inside yes 10 g.

g CV 8025 Pressur1zer relief tank

.s R

analyzer - outside yes 10 0

MD 5660 E DT gas analyzer - inside yes 10.

k.

CV 5661 EDT gas analyzer - outside

'N yes 10 l

9 CV 4000 EDT.N2 supply - outsi

\\

yes 10 E

MG 4005 RCDT discharge -' ins N-\\ yes 10 CV 4006 RCDT discharge -

side yes 10 CV 8028 Pressurizer re f tank 3

m 7

makeup -

side yes 10

% j m MD 5677 Contal.

atmosphere sample -

yes 10

~.

3 g g-y - outstde-4 p-E*

g MS 5678 ainment atmosphere sample

~

5 return - outside 10 sRE yes

• g gg>'

g *k o., a - --

M:

R 2

,,i..

)

5"

{

3 N

......i.,

., i.

s.,,'

.. t :

.3 J

e..

=n e

i

);

O.

TABLE 3.6-1 J

CONTAINMENT ISOLATION VALVES E

g TESTABLE DURING

/

L_,

val.VE NUMBER FUNCTION PLANT OPERATION IS01)tTION TIME 5

seconds)

-i

'A.

Cont nt Isolation CV 8033 Pressurizer re11ef tank N supply - outside yes 10 2

CV 8880 Accinaulator N supply

_outside yes 10 2

MD 4300 s collection header - inside yes 10

- -i CV 4301 GasNollection header - outside.

yes 10

[

MO 10016 Chillkwater supply - inside yes 5

i CV 10015 Chilled Wat er supply - outside yes 3

13 MG 10013 Chilled wat return - inside y

5 CV 10014 Chilled water turn - outside es 3

U MD 4180 Containment sump scharge -

t i.

R

[

inside yes 10 O

y,

. CV 4181 Containment sump disch.

t l

h, e

outside yes 10 9

CV 8871 SIS test line - inside yes 10 E

CV 8964 SIS test line - outside yes 10 CV 8888 SIS test line - outside yes 10 CV 8149A CVCS letdown - inside yes 10 CV 81498 CVCS letdown - inst yes 10 R

CV 8149C CVCS letdown - 1 de yes 10 I

e-CV 8152 CVCS letdown - utside Nyes 10 R h @h*

MD 8112 RC Pump se water return -

t 5-insi no 10 h g MG 8100 RC seal water return -

outside no 10 o>e 2"

SV 5642 Containment atmosphere sample

1. ", 9 i

-p g t -

supply drain - inside yes 3

E-SV 5643 Containment atmosphere sample

• gg k

supply drain - inside yes 3

Rg e

.\\,

SV e9 Containment atmosphere sample y"

G7 j

return - inside yes 3

g 1

i y

a n--

~

,a.,

-,_____a.

~l J.

TABLE 3.6-1 g

h CONTAllWENT !$0LATION VALVES r

E 1ESTABLE DURIIIG G

VALVE R

FtfMCTION PLANT OPERATION ATION TISE tseconds)

A.

Containment Iso fon MD 8105f CYCS c fag - outside yes N.A.

MD 8106f CVCS charg

- outside yes N.A j

CV 4470 Service air s ly - outside yes 10

~1 CV 4471 Instrument air s Iy - outside no 10 E-MD 3291#

CCW train "A" supply outside no N.A.

MG 3292f CCW train "A" discharge outside N.A.

m@

MG 3346#

CCW train "B" supply - outside nc N.A.

9 MD 32907 CCW train "B" discharge - outs no M.A.

w t-2 os B.

Containment Ventilation Isolation is P.

MG 10002**

Conta1 ament purge supply - t de'

.no 5

S CV 10001**

Containment purge supply outside no 3

g M0 10003**

Containment purge exh

- inside 5

CV 10004**

Containment purge e est - outside no 3

m MG 1000S***

liydrogen vent su y - outside yes 5

3

.R MG 10006***

liydrogen vent pply - outside yes 5

N MD 10011***

Hydrogen we exhaust - outside yes 5

e-MO 10012***

Hydrogen nt exhaust.outside yes 5

@ S j,,

MO.10007***

liydrog vent supply - 1asfde.

ye5 5

gR MO 10008***

llyd en vent supply - 1nside yes 5

E-j gil MD 10009***

I regen vent exhaust - inside ycs-5 e>e-MO 10010***

ydrogen vent exhaust - inside yes 5

5%Si o

34 i

U

~

l e

e of e

g

~. -.

wo

-. ~ - - _ _.. - - - -. -

~.

40

.D r.

^QO R

,e TAKE 3.5-1 CMTATIBEN ISOLATICII VRVES TESTABI.E ElstINE g

VEVE FINETIGl PLAIIT SPERATISH ISRATlWI TWE (seconds)

=

C.

Steamites letten CV 22pf-IInta Steam Isoletten typass Llos yes -

N.A.

Etnef j;i CV 22949-Itain Steam Line Stems Trop yes N.A.

C-229N CV 221ef a steen Feuer % ted n.A.

tefs(notseisttensigest no

]

CV 2230f IInta Power Operated Rolle (astoelattens 1) no N.A.

o 3.R, CV 2250f Main Steam epera nellefs(

sola signol) ne N.A.

o h

CV 2278f Itala Ste ms ted R.A.-

l s'

Reliefs (no ten st 1) se Nata steam ly to il ary fu 1

n

[

19 2218f See Ortver no N.A.

a IS 2228f Hata supply to Amu ary fW B.A.

R Turtine artver as W

IIS 223ef la steam Supply to Aust19 R.A.

Turbine artver no p

19 224ef IInta tems supply to Aust19ery FW Pump Turbine artver as N.A.

g E' R E E P--

g

~'

E;fs5' an

.s P

y N

l '.

?

. I L

.m.,

.__._,____________J

'~

LCA 190 Attachment B Page 11 of 14 4

(

w d44. 4 4 4. E. d5 5

a4 d'a d 4

4 4

.4.

W 1

l N

asgj i

...E.E aa ga oss a

ass Ig ma

.a i-e ie a

gg' E

13 y p ) v. )

E 51

'saasas Isla j!!3533 i

y sus s s s !-

(

2 l s

8 xa-s a

s s

i

.ll

..a a a a a

g-l 3g ]}..]} sl-l!!. s!,!.!.! !.!s f

3 xa 1153i saja3X131:

[

=

8 3

s_$5]*3EEEE5* Elm'EE'EE'E' E.

3.-

3s

].

I E

a g.

I*T.

I 4

a --

1 4

1 ##

I m!ES.a Bis a g a e a i33 8!=ms s HE E a E R a g

l 33 E E ana a man a a a a 3aa

~

ha a

TIEWAN-UNIT 1 3/4 6-21 Amendment No. E P 3.nX a. m (June 10, 198 %

a' dT H,ef t

..u N:

This page interttionalltj teft blank e

i

/]

9 v,

.9 k

%3 'i' TABLE 3.6-1 Y

CONTAllNENT ISOLATION VALVES o

TESTABLE SURING 1500 ION TINE PLANT OPERATION seconds)

FUNCTION d

V NUMBER E.

Non-automatic P r Operated Valves Continued N.A.

SIS discharge Train *A* - inside N.A.

no CV 9801#

SIS discharge Tralvi *A* - outside N.A.

NO 8802A#

SIS discharge Train "B" - inside yes N.A.

no CV 8824#

5 5 discharge Train

'8" - outsfde y

NO 88028#

{

.'g F.

Manual Valves W.A.

(RCS) Dea t Tester -

side yes to N.A.

4 9090A*

(RCS) Deadwel Tester outside yes 80900*

Refueling cavity 1 ulation -

D' ki SF080 inside N.A.

0 Refueling cavit ir lation -

e-SF046 outside N.A.

Refuell avity drain - in e

N.A.

~

Ref ng cavity drain - outsi N.A.

h SF073 SF074 R-11ng cavity sklasming -

8 inside N.A.

=

SF063 R

Refueltag cavity sktaming -

N.A.

l g/\\

(4 SF062 outside 7

9emin. water wash down -

N.A.

E M0059##

outside N.A.

,ye no 59g Feedwater Line Brains N.A.

$"p FWO79#-FWO96#

Main Steam Line Drains N w '-

no M5013#-NSO

'E g UEE hy 0 D "E

-w C'

F.o=

k

_ 4:

y TABLE 3.6-1 8

CONTAINNENT ISOLATION VALVES E:

TESTABLE DURING LATION TINE H

VALVE N ER FUNCTION

- PLANT OPERATION (seconds)

G.

Check Valves 8047 PRT N2 Supply - inside no

. N.A.

8046 U Water to Press.

- -i lief Tank.- inside no N.A.

[-

8180 RCP

1. Water Rrn. - inside no N.A.

8968 Np to A ulators - inside no-N.A.

w

[

}

Check valve Demin. Wat to Washdown o

Sta. - insi no N.A.

b-4 Check valve RCDT N2 Supply -

side no N.A.

Fe-Check valve downstream O

of CV 4470-Servic r - inside no' N.A.

h Check valve downstream of CV 4471 nstrument Air - inside.

no

. M.A.

m

. Ng May be opened on intermittent basis under administrative control.

ic pr. der or air supplies g

• • The Containme t urge supply and exhaust; valves.shall be made inoperable (ele g

removed fr their respective operators) during Modes.1 through 4. -

4

• • • The Hyd gen vent supply and exhaust valves-shall.be-normally closed, and-opened on when and for the Q>

. duration of time actually necessary.

2%E A M'

1. Jof subject to Type C ' leakage tests.

5{[,

0 ]o.

ff May be. opened under administrative control:when' personnel fire protection required.

P g-

\\

CI8 N

- ce N'

~r e z

.O

' W tzt

?

-s-.

e-m%e..

a g.

...p

_i.wsa.r'-

..o6 U-Q-'v 4

mW-

]

d

('*

• eW+

p.

g d'%-M 8

'8B 7 s1 14 +#" e)

YWW

.iW'e

• v%

g-M--.1*-

49

N%

9 s

LCA 190 Attachment B 9;.

Page 14 of 14

,i i

!CONTAINMENT SYSTEMS

(

1 Basts j

3/a.6.3 CONTAINMENT !$0LAT!0N VALVE $

The OPERA 81LITY of the containment isolation valves ensures that the i

containment atmosphere will be isolated from the outside environment in the event of a release of radioactive material to the containment atmosphere or pressurisation of the cuntainment. Containment isolation within the time limits specified ensures that the release of radioactive i

material to the environment will be consistent with the assumptions used l

in the analyses for a LOCA.g r

The containment purge supply and exhaust valves are maintained shut with their power supplies removed during Operating Modes 1.a. since they have not been qualified under Design Basis Accident Lor,A conditions.

8ecause the plant is in an inherently safer condition with containment i

ventilation valves shut, hydrogen vent supply and exhaust valves are i

normally shut and opened only when and for the duration of time actually j

necessary.

The containment purge supply and exhaust valves have resilient seat material which may be subject to leakage past the seats.

For this reason leak testing on these valves is performed at least once per g months. In addition. leak testing is perfomed prior to entering tiede 4 from Mode 5 f-j provided the purge valves had been cycled while in Modes 5 or 6.

(

l 3/a.6.a COM8UST!8LE GAS CONTROL The OPERABILITY of the equipment and systems required for the detection f

and :ontrol of hydrogen gas ensures that this equipment will be available to maintain the hydrogen concentration within containment below its flammable I

limit during post LOCA conditions. Either recombiner unit or the purge system is capable of controlling the expected hydrogen generation associated i

with 1) :irconium-water reactions 2) radiolytic decomposition of water and

3) corrosion of metals within containment. These hydrogen control systems are consistent with the recommendations of Regulatory Guide 1.7. " Control of Combustible Gas Concentrations in Containment Following a LOCA" March 1971.

The hydrogen mixing systems are provided to ensure adequate mixing of the contattenant atmosphere following a LOCA. This mixing action will prevent localized accoulations of hydrogen from exceeding tne flaunable limit.

I

-- FSAR Table 6.2-1 lists all containment isolation valves and specifics the thne limit for automatic closce.

Changes to TSAR Table 6.2-1 shall be made in acccrdar.cc with Section 50.59 of 10CFRSO.

'l TROJAN. UNIT I 8 3/4 6-4 hiendmentNo.II Govember 10 lyhs cog:,o 5-

)

l

'*'o l

UNITED STATES OF AMERICA NUCLEAR RECULATORY COMMISSION In the Matter of

)

)

PORTLAND GENERAL ELECTRIC COMPANY,

)

Docket 50-344 THE CITY OF EUGENE, OREGON, AND

)

Operating License WPF-1 PACIFIC POWER & LICHT COMPANY

)

)

(TROJAN NUCLEAR PLANT)

)

J CERTIFICATE OF SERVICE I hereby certify that copies of License Change Application 190 to the Operating License for Trojan Nuclear Plant, dated January 25, 1990, have been served on the following by hand delivery or by deposit in the United States mail, first class, this 25th day of January 1990:

State of Oregon Department of Rnergy 625 Marion St NE Salem OR 97310 Mr. Michael J. Sykes e

Chairman of County Commissioners k

Columbia County Courthouse St. Helcns OR 97051

. Cf.' 'sek,' Acting Manher Nuclear Regulation Branch Nuclear Safety & Regulation Subscribed and sworn to before me this 25th day of January 1990.

Lde (k*u" Notary Public of Ocifgon 4

w

' Q$XVy 3

~ yt. w YL My Commission Expires enzzo f [ M k

n g, g

' [ %% f,; ~

.s. %c

[ A