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: ML17139C527 ML17139C529 ML18040A741
References
NUDOCS 8409110481
Download: ML18040A741 (5)

Text

TABLE 3.6. 3-1 (Continued)

PRIMARY COHTAINMENT ISOLATIOH VALVES i NXIMUM ISOLATIOH TIME ISOLATION VALVE FUNCTION ANO NUMBER Seconds) SIGNAL(s)(')

Automatic Isolation Valves (Continued)

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

SV"12661 N/A Y SV-12671 N/A Y HV-113" 3 30 X HV"11314 Qp X HV-113a5 30 X HV"1 '46 3P X Contairnent Puree HV-15703 /5 YiR HV-15'4 /5 Y,R HV"15705 /5 Y,R H/ 1571 1 /5 Y,R HV-15713 /s Y,R HV"1.5714 /5 Y,R HV-15721 HV-15722

~ /5 Y,R Y,R

'HV-15723 /5'5 Y,R HV"15724 Y.,R HV-15725 /1 /5 Y,R

/>3

- Orwell Spray(') 'HR HV-151F016 A,B 90 RB Chilled Water HV"18781 Al,A2, Bl, 92 4Q X HV-18782 Al,AZ,.B", B2 6 X HV"18791 Ai A2 Bl, B2;: 15 -Y HV 87 2 Ai jA2 >Bi F52 't Y SUSC"EHAttttA - UttiT 1 3/4 6-20 8409110481 840907 PDR ADOCN 05000387 P PDR

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 i I ~ ~ fl I II ~ I Ql ~

'V I not to have been open fo" more tihan 90 hours0.00104 days <br />0.025 hours <br />1.488095e-4 weeks <br />3.4245e-5 months <br /> in the previous 366 days.+

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 f~'r r c&o of

'/

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 the total pressure to 45.0 psig which is less than the design pressure 'imit 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, L

de-inerting and pressure control. n 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 MAXIMUM ISOLJTIOH TIME >SOL" TIQH VALVE FUNC ION AHO HUMBLER (Seconds) SIGHAL(s)

Au orati c isola i on Va1 yes (Continued)

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

,I SV I H/A X.

H/A X.

H/A

'Y-&66 Y

SY-"25/ H/A Y HV-~~ SO X W

~ ~ ~

i r

.0 X 1 ~ %45 50 X Hl/ .0 X Ccntai nr..er. F vroe +

HV-1=703 /5 Y)R HV- 1570 '. is Y,R HV"15705 HV-157'"

~ /S/5 Y,R Y,R.

HV- 1)571" z~ /s Y,R

' /5 HV Hy-15721 HV-15722 v

~ /5 Y,R Y,R HV-15723 HV-1572<

~ /5/5 Y,R Y,R Y,R Hy-15725 /5 Y,R RHR - Drvwe11 Scrav ( )

HV-15 F016 A, B 50 R!! Chil',ec Water HV" 18781 A1 A2 5 I 2 <0 X HV-1e7S2 52 6 X Hy-18791 AL A2 ) c1 ~ t2

~

0 C Y e

HV- 6752 ) N2 e Y

+ Maximum 5! ~ 5/"'Ai)HA isolation time i'ncludes. all instr umentati'on delays UH I 1 ""20 I

84091 10481 840907 PDR ADOCK 05000387 P . PDR

ENCLOSURE 2 ShLP prepared by the Containment Systems Branch

> Evaluation P

Criteria Category Narrative Description Hanagement Involvement

)

N/A

'~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