ML18040A741

Proposed Tech Specs Re Primary Containment Isolation Valves & Containment Sys Limiting Condition for Operation & Bases

ML18040A741
Person / Time
Site:	Susquehanna
Issue date:	09/07/1984
From:	PENNSYLVANIA POWER & LIGHT CO.
To:
Shared Package
ML17139C528	List: ML17139C529 ML18040A741 PLA-2293, Forwards Application to Amend License NPF-14,revising Tech Specs Re Removal of 50-degree Blocking Requirements,Per NUREG-0737,Item,II.E.4.2,rev of Isolation Times & Rev of Bases for Consistency W/Unit 2 Bases
References
NUDOCS 8409110481
Download: ML18040A741 (5)

Text

TABLE 3.6. 3-1 (Continued)

PRIMARY COHTAINMENT ISOLATIOH VALVES VALVE FUNCTION ANO NUMBER i NXIMUM ISOLATIOH TIME Seconds)

ISOLATION SIGNAL(s)(')

Automatic Isolation Valves (Continued)

Containnent Instrunent Gas HV-12603 SV-12605 SV"12651 SV"12661 SV-12671 ZQ N/A N/A N/A N/A X

X X.

Y Y

HV-113"3 HV"11314 HV-113a5 HV"1 '46 30 Qp 30 3P X

X X

X Contairnent Puree HV-15703 HV-15'4 HV"15705 H/ 1571 1 HV-15713 HV"1.5714 HV-15721 HV-15722

'HV-15723 HV"15724 HV-15725

/>3

'HR

- Orwell Spray(')

HV-151F016 A,B RB Chilled Water HV"18781 Al,A2,Bl,92 HV-18782 Al,AZ,.B",B2 HV"18791 Ai A2 Bl, B2;:

HV 87 2

AijA2 >BiF52

/5

/5

/5/5

/s

/5

~ /5

/5'5

/1

/5 90 4Q 6

15

't YiR Y,R Y,R Y,R Y,R Y,R Y,R Y,R Y,R Y.,R Y,R X

X

-Y Y

SUSC"EHAttttA - UttiT 1 8409110481 840907 PDR ADOCN 05000387 P

PDR 3/4 6-20

CO>FATA:NUGENT SYST:-HS DR""~'=<<n'~O SUPPRc~SION CHAM8cR PURGF SYSTEM

'M:.T NG CONDI ION FOR OPERAT'.ON

. 6. 1. 8 The drywell and suppress>'on chamber.puree system may be in ope. a ion

" ~ "

,o p to 90 hours0.00104 days <br />0.025 hours <br />1.488095e-4 weeks <br />3.4245e-5 months <br /> each -366 oags wi.th the supoly and exhaus isolation valves in ore supply line and one exhaus~ line 'open for inerting, de'.nerting or pressure control APo'CA9ILITY:

GP RATIONAL CONDITIONS 1) 2 ana 3.

AC '

Mith a drywell and/or suppression chamber purge supply and/or exhaust isolation valve open, except as permitted

above, close the valve(s) within iour hours or be in at least HOT SHU DOMN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

M:th a con.ainment purge supply and/or exhaust isolation valve(s) w h

resilient material seals having a measured leakage ra e exceeding the l'.nit of Surveillance Requirement

4. 6. 1. 8. 2 restore the inoperable va>ve(s) to OPERASL" sta us within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or be in at least HOT SHUT30'r/N w'.thin the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

SURV ILLANC=" R~OUIR""N~NTS

4. 6.'.8.'efore being opened, the drywell and suppression chamber purge L

1

'V I

hours in the previous 366 days.+

i I

~

~

fl I I I

~ I Ql ~

not to have been open fo" more tihan 90

4. 6. '. 8. 2 ach "8 inch and 24 inch drywell'nd suppression chamber purge supplv ana exhaus with resilient material seals shall be de...onstra ed GP-"RADL=

>y veriiying thiat the measured leakage rate is less than or. equal o 0.0:-

L wren pressurized to P

ai least once per 6 months.

a ga(v'e,s of f~'r rc&o p~

'$Q 5 ga.)

(

cl fp '/ deed 0

E..A.DNA UN I T 1 3/4 5-'

CONTAINMENT SYSTEMS BASES 3/4.6.1.5 PRIMARY CONTAINMENT STRUCTURAL INTEGRITY This limitation ensures that the structural integrity of the containment uill be maintained comparable to the 'original de'sign standards for the life of the unit.

Structural integrity is required to ensure that the containment will withstand the maximum pressure'f 45.0 psig in the eveht of a LOCA.

A visual inspection in conjunction with Type A leakage, tests is sufficient to dqmonstra'te this capability; 3/4.6. 1.6 DRYMELL AND SUPPRESSION CHAMBER INTERNAL PRESSURE The limitations on drywell and suppression in chamber internal pressure ensure that the containment peak pressure of'45.0 psig does not exceed the design pressure of 53 psig during LOCA conditions or that the external pressure differ-ential does not exceed the design maximum external pressure differential of 5 psid.

The limit of l.5 psig for initial positive containment pressure will

'imit the total pressure to 45.0 psig which is less than the design pressure and is consistent with the safety analysis.

3/4.6. 1.7 DRYMELL AVERAGE AIR TEMPERATURE The limitation on drywell average air temperature ensures that the containment peak air temperature does not exceed the design temperature of 340'F during LOCA conditions and is 'consistent with the safety analysis.

3/4.6. 1.8 DRYMELL AND SUPPRESSION CHAMBER PURGE SYSTEM The drywell and suppression chamber purge supply and exhaust isolation

.valves are required to be closed during plant operation except as required for inerting, de-inerting and pressure control.

n L

I I

~~ass Leakage integrity tests with a maximum allowable leakage rate for purge

. supply and exhaust isolation valves will provide early indication of resilient material seal degradation and will allow the opportunity for repair before gross leakage failure develops.

The 0.-60 L

leakage limit shall not be exceeded when the leakage rates determined 5y the leakage integrity tests of these valves are added to the previously determined total for all valves and penetrations subject to Type 8 and C tests.

The 90 hours0.00104 days <br />0.025 hours <br />1.488095e-4 weeks <br />3.4245e-5 months <br /> per 365 day li"'t Gn purge va'ive operation is imocsed 7.o pro ec the integrity of the SGTS fi'"e. s.

Analvsis indica-.es -nat sno ld a LOCA occur while this pathway is acing utilized, the associated pressu"..e surge through the (18 or 24") purge lines will adversely affect the in egrity of SGTS.

This limit is not imposed

however, on.he subject valves wheg pressure control is being performed hrough the 2"inch bypass line, since a pressure surge through this leone doe~

no hreaten the'PERABILiTY of SGTS.

SUS(UEHANNA " UNIT 1 B 3/4 6-2

TABLE "=.6;5-1 (Ccntinued)

PRIMARY COHTAIHME'Hi ISOLATION VALVES VALVE FUNC ION AHO HUMBLER MAXIMUM ISOLJTIOH TIME (Seconds)

>SOL"TIQH SIGHAL(s)

Au orati c isola ion Va1 yes (Continued)

Contai n.-.,en-instri~er, Gas HV- '250~

SV

,I I

'Y-&66 SY-"25/

ZO H/A H/A H/A H/A X

X.

X.

Y Y

HV-~~

W i r

~ ~

~

1

~ %45 Hl/

Ccntai nr..er.

F vroe+

HV-1=703 HV-1570 '.

HV"15705 HV-157'"

HV-1)571" HV v

Hy-15721 HV-15722 HV-15723 HV-1572<

Hy-15725

( )

RHR - Drvwe11 Scrav HV-15 F016 A, B R!! Chil',ec Water SO

.0 50

.0

/5 is

~ /S

/5 z~ /s

/5

~ /5

~ /5

/5

/5 50 X

X X

X Y)R Y,R Y,R Y,R.

Y,R Y,R Y,R Y,R Y,R Y,R Y,R HV"18781 HV-1e7S2 Hy-18791 HV-6752 A1 A2 5

AL ~ A2 ) c1 I

2 52

~t2

) N2

<0 6

0 C e

e X

X Y

Y

+

Maximum isolation time i'ncludes. all instr umentati'on delays 5! ~5/"'Ai)HA UHI !

1 I

84091 10481 840907 PDR ADOCK 05000387 P

PDR

""20

ENCLOSURE 2

> Evaluation Criteria P

Hanagement Involvement

)

Category N/A ShLP prepared by the Containment Systems Branch Narrative Description

'~pp of Technical Issues Understanding of the Technical Issue was demonstrated espons veness n orcement I{ story N/A

Aeporta e Events

. Staffing N/A ra nng N/A