ML20196K295

Proposed Tech Specs Pages for Proposed Change 220,revising Leak Rate Requirements of TS 3.7.A.4 & 4.7.A.4 for Main Steam Line Isolation Valves

ML20196K295
Person / Time
Site:	Vermont Yankee
Issue date:	06/29/1999
From:	VERMONT YANKEE NUCLEAR POWER CORP.
To:
Shared Package
ML20196K292	List: ML20196K288 ML20196K295
References
NUDOCS 9907080268
Download: ML20196K295 (5)

Text

VEnm>NT YA. war. Necu:An Powen Colu oinuoN l j

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Docket No. 50-271 BVY 99-83 l l

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Attachment 3 Vermont Yankee Nuclear Power Station Proposed Technical Specification Change No. 220 Main Steam Line Isolation Valve Leakage Marked-up Version of the Current Technical Specifications l

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'VYNPS 3.7 LIMITING CONDITIONS FOR~ 4.7 SURVEILLANCE REQUIREMENTS OPERATION at normal cooldown rates if the torus water temperature  ;

exceeds 120*F.

e. Minimum Water volume -

68,000 cubic feet

f. Maximum Water Volume --

70,000 cubic feet Primary containment 2. The primary containment

2. integrity shall be integrity shall be demonstrated as required maintained at all t'.mes by the Primary when the reactor its Containment Leak Rate critical or when t.he Testing Program reactor water (PCLRTP).

temperature is above 212*F and fuel is in the reactor vessel except while performing low power physics tests at atmospheric pressure at power levels not to exceed 5 Mw(t). l

3. (Blank)

3. If a portion of a system 1 that in considered to be an extension of primary containment is to be opened, isolate the affected penetration flow path by use of at least-one closed and deactivated automatic valve, closed manual valve or blind flange. -- n _

^ 4. fThe le age from any ode

4. Whene~ f primary  ! mai tema line con inment is requ d, one ( is ation valve s 1 t leakage from I t exceed 11.5 cf/hr )

ain steam line at 24 psig (P . Repair i isolation valv shall not l L and retest s insure all be i

exceed 15.5 f/hr ) conducted (at 44 psig, P.) . j Qan .,

b aca M 1 54 M l R76 w:A Leh 2) 147 Amendment No. Go, 453 , 163

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Insert 1, Limiting Condition for Operation 3.7.A.4, page 147 Whenever primary containment integrity is required, the leakage from any one main steam line isolation valve shall not exceed 31 scf/hr at 44 psig (P), and the combined leakage from all four main steam lines shall not exceed 62 scf/hr at 44 psig (P,).

I Insert 2, Surveillance Requirement 4.7.A.4, page 147 l

Verify leakage rate through each main steam line isolation valve is < 23 scf/hr and that the combined maximum pathway leakage rate for all four main steam lines is < 46 scf/hr when tested i at > 24 psig (PJ.

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VI'.HMoNT YANht.I', Nt cu. Ant Powr.H CoHPonAltoN j Docket No. 50-271 BVY 99-83 Attachment 4

.y Vermont Yankee Nuclear Power Station Proposed Technical Specification Change No. 220

. Main Steam Line Isolation Valve Leakage Retyped Technical Specification Page i

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3.7 LIMITING CONDITIONS FOR 4.7 SURVEILLANCE REQUIREMENTS OPERATION l at normal cooldown rates if the torus water temperature exceeds 120'F.

e. Minimum Water Volume

- 68,000 cubic feet

f. Maximam Water Volume

- 70,000 cubic feet

2. Primary containment 2. The primary containment integrity shall be integrity shall be maintained at all times demonstrated as required when the reactor is by the Primary critical or when the Containment Leak Rate reactor water temperature Testing Program (PCLRTP).

is above 23 2'F and fuel is in the reactor vessel except while performing low power physics tests at atmospheric pressure at power levels not to exceed 5 Mw(t).

3. If a portion of a system 3. (Blank) i that is considered to be an extension of primary j containment is to be  ;

opened, isolate the affected penetration flow path by use of at least one closed and deactivated automatic valve, closed manual valve or blind flange.

4. Whenever primary 4. Verify leakage rate containment integrity is through each main steam required, the leakage line isolation valve is l from any one main steam $23 scf/hr and that the line isolation valve combined maximum pathway shall not exceed leakage rate for all four 31 scf/hr at 44 psig ( P. ) , main steam lines is and the combined leakage $46 scf/hr when tested at from all four main steam 224 psig (P ) .

t lines shall not exceed 62 scf/hr at 44 psig (P.) .

Amendment No. 60, 444, 164 147 l