ML19274D224
| ML19274D224 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 01/09/1979 |
| From: | Vandenburgh D VERMONT YANKEE NUCLEAR POWER CORP. |
| To: | Ippolito T Office of Nuclear Reactor Regulation |
| References | |
| WVY-79-5, NUDOCS 7901160302 | |
| Download: ML19274D224 (4) | |
Text
Proposed Change No. 76 f
V EIO!ONT Y AN ImM N UCLEAR POWER COlwOR ATION B.3.2.1 SEVENTY SEVEN GROVE STREET pg p y WVY 79-5 l(UTI. AND, VI?ID10NT 05701 f4EPLY TO ENGINEERING OFFICE TURNPIKE RO Ao WEST DO RO M ASS AC HUSETTS 01581 T E LE PHO N E e t F-36 6 9019
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January 9,1979 United States Nuclear Regulatory Commission Washington, D. C.
20555 Attention:
Of fice of Nuclear Reactor Regulation
'Ihomas Ippolito, Chief Operating Reactors Branch #3 Division of Operating Reactors
References:
(a) License No. DPR-28 (Docke t No. 50-2 71)
(b) USNRC Letter to YAEC dateo November 29, 1978, Containment Purging During Normal Plant Operation (c) VYNPC Letter to USNRC dated January 9,1979 (WVY 79-6)
Dear Sir:
Subject:
Containment Purging During Normal Plant Operation Pursuant to the requirements of your letter, Reference (b), Vermont Yankee Nuclear Power Corporation hereby proposes the following modification to Appendix A of the Operating License.
PROPOSED CHANCE:
It is proposed that Table 4.7.2.a of Appendix A Technical Specifications be modifiad to reflect the incorporation of the necessary requirements to limit use of selected containment vent and purge valves during power operation to 90 hours0.00104 days <br />0.025 hours <br />1.488095e-4 weeks <br />3.4245e-5 months <br /> per year.
REASON FOR CHANCE:
This change is prompted by Commission concerns documented in Reference (b). To satisfy these concerns, Vermont Yankee was requested to provide either a proposed Technical Specification amendment which would limit purging during power operation, or a schedule for completion of an evalration justifying continuation of unlimited purging. Rather than justify unlimited purging for all purge and vent valves, Vermont Yankee will justify, via Reference (c), unlimited use only for those valves / systems involved in the containment differential pressure operation. This proposed modification will address the valves that are used exclusively for containment purging. Additional information relative to these valves is also provided in Reference (c).
SAFETY CONSIDERATIONS:
The justification of the ability of the subject isolation valves to close as required by Reference (b) is discussed in Reference (c). This change has been reviewed by the Vermont Yankee Nuclear 7901160'3Og
s' U.
S. Nuclear Regulatory Commission Page 2 Att: Office of Nuclear Reactor Regulation January 9, 1979 Safety Audit and Review Committee.
FEE DETEPMINATION: We conclude that this amendment is exempt from any fees pursuant to 10CFR Part 170.22 since this submittal is a result of a written NRC request.
SCHEDULE OF CFANCE:
The proposed changes will be incorporated into the Technical Specifications as soon as possible following receipt of your aporoval.
Very truly yours, VERMONT YANKEE NUCLEAR POWER CORPORATION 00 y
D. E. Vandenburgh Vice President C WMONWEALTH OF MASSACHUSETTS)
)ss.
COUNTY OF WORCESTER
)
Then personally appeared before me, D. E. Vandenburgh, who, being duly sworn did state that he is Vice President of Vermont Yankee Nuclear Power Corporation, that he is duly authorized to execute and file the f oregoing request in the name and on the behalf of Vermont Yankee Nuclear Power Corporation and that the statements therein are true to the best of his knowledge and belief.
M&
n
//ArmandR. Soucy Notary Public My Commission Expires September 7,1984
TABLE 4.7.2.a.
PRIMARY CONTAINMENT ISOLATION VALVES VALVES SUBJECT TO TYPE C LEAKAGE TESTS Number of Power Maximum Action on Isolation Operated Valves Operating Normal Initiating Group (Note 1)
Valve Identification Inboard Outboard Time (sec) Position Signal 1
Main Steam Line Isolation (2-80A, D 6 2-86A, D) 4 4
5(note 2)
Open GC 1
Main Steam Line Drain (2-74, 2-77) 1 1
35 Closed SC 1
Recirculation Loop Sample Line (2-39, 2-40) 1 1
5 Closed SC 2
RHR Discharge to Radwaste (10-57, 10-66) 2 25 Closed SC 2
Drywell Floor Drain (20-82, 20-83) 2 20 Open CC 2
Drywell Equipment Drain (20-94, 20-95) 2 20 Open GC 3
Drywell Air Purge Inlet (16-19-9) 1 10 (Note 3)
Closed SC 3
Drywell Air Purge Inlet (16-19-8) 1 10 Closed SC 1
10 (Note 3)
Closed SC 3
Drywell Purge 6 Vent Outlet (16-19-7A) 1 10 Closed SC 3
Drywell Purge 6 Vent Outlet Bypass (16-19-6A) 3 Drywell 6 Suppression Chamber Main Exhaust (16-19-7) 1 10 (Note 3)
Closed SC 3
Suppression Chamber Purge Supply (16-19-10) 1 10 (Note 3)
Closed SC 3
Suppression Chamber Purge 6 Vent Outlet (16-19-7B) 1 10 (Note 3) Closed SC 3
Suppression Chamber Purge 6 Vent Outlet Bypass (16-19-6B) 1 10 Closed SC 3
Exhaust to Standby Gas Treatment System (16-19-6) 1 10 closed SC 3
Containment Purge Supply (16-19-23) 1 10 C.losed SC 3
Containment Purge Makeup (16-20-20, 16-20-22A, 16-20-22B) 3 UA Closed SC 5
Reactor Cleanup System (12-15, 12-18) 1 1
25.
Open CC 5
Reactor Cleanup System (12-68) 1 45 Open GC 6
IIPCI (23-15, 23-16) 1 1
55 Open GC 6
RCIC (13-15, 13-16) 1 1
20 Opon GC Primary / Secondary Vacuum Relief (16-19-11A, 16-19-11B) 2 NA Closed SC Primary / Secondary Vacuum Relief (16-19-12A,16-19-12B) 2 NA Closed Process i
135.
VYNPS Table 4.7.2 Notes t
3.
Containment Purging through these valves shall be limited to < 90 hours0.00104 days <br />0.025 hours <br />1.488095e-4 weeks <br />3.4245e-5 months <br /> per year during Reactor Power Operations.
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137a
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