ML20247J812

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Proposed Tech Specs Reducing Normal Operating Suppression Pool Water Temp Limit & Adding Time Restriction for Higher Temp Allowed During Surveillances That Add Heat to Suppression Pool
ML20247J812
Person / Time
Site: Vermont Yankee Entergy icon.png
Issue date: 05/08/1998
From:
VERMONT YANKEE NUCLEAR POWER CORP.
To:
Shared Package
ML20247J809 List:
References
BVY-98-69, NUDOCS 9805210415
Download: ML20247J812 (6)
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VERMONT YANKEE NUCLEAR POWER CORPORATION Docket No. 50-271 BVY 98-69 Attachment 3 Vermont Yankee Nuclear Power Station Proposed Technical Specification Change Suppression Pool Water Temperature Marked-up Version of the Current Technical Specifications l

May 1998 P905210415 990508 ..

DR AD0cn 0 1

VYNPS 3.7 LIMITING CONDITIONS FOR 4.7 SURVEILLANCE REQUIREMENTS OPERATION i 3.7 STATION CONTAINMENT SYSTEMS 4.7 STATION CONTAINMENT SYSTEMS Applicability: Applicability:

Applies to the operating status Applies to the primary and of the primary and secondary secondary containment system containment systems, integrity.

Obiective Obiective:

To assure the integrity of the To verify the integrity of the primary and secondary primary and secondary containment systems. containments.

Specification: Specification:

1 A. Primary Containment A. _ Primary Containment i

1. Whenever primary 1. The suppression chamber containment is required, water level and the volume and temperature shall be temperature of the water checked once par shift.

in the suppression A visual inspection of chamber shall be the suppression chamber maintained within the interior including water following limits: line regions and the interior painted

a. Maximum Water surfaces above the water Temperature during line shall be made at normal operation - each refueling outage.

C70 b le;^7. Whenever there is indication of relief

b. Maximum Water valve operation which Temperature during adds heat to the f

[ ,,,) any test operation suppression pool, the pool temperature shall which adds heat to kWWIYIh g g the suppression be continually monitored Shdd /vb/~ pool-100*F-jg and also observed and logged every 5 minutes FU[044i/V c. If Torus Water until the heat addition cg[3,vg cypef: Temperature exceeds is terminated. Whenever 110*F, initiate an there is indication of faf 01076 immediate scram of relief valve operation 1 the reactor. Power with the temperature of j

{-the y 3 -~'~ y hourg' operation shall not the suppression pool '

be resumed until reaching 1600F or more the pool and the primary coolant i temperature is system pressure greater reduced below than 200 psig, an l Cfo*F t&tAF. external visual examination of the

d. During reactor suppression chamber ,

isolation shall be conducted conditions, the before resuming power I reactor pressure operation.

vessel shall be depressurized to less than 200 psig at normal cooldown rates if the torus water temperature exceeds 120*F.

Amendment No. 16, 50, 146 l _ __ _ ._____________- ___-_______ - ____________

VERMONT YANKEE NUCLEAR POWER CORPORATION Docket No. 50-271 BVY 98-69 Attachment 4 Vermont Yankee Nuclear Power Station Proposed Technical Specification Change Suppression Pool Water Temperature Retyped Technical Specification Pages May 1998

VYNPS 3.7 LIMITING CONDITIONS FOR 4.7 SURVEILLANCE REQUIREMENTS OPERATION 3.7 STATION CONTAINMENT SYSTEMS 4.7 STATION CONTAINMENT SYSTEMS Applicability: Applicability:

i Applies to the operating status Applies to the primary and I

of the primary and secondary secondary containment system containment systems. integrity.

Obiective: Obiective:

To assure the integrity of the To verify the integrity of the primary and secondary primary and secondary containment systems. containments.

Specification: Specification:

A. Primary Containment A. Primary Containment

1. Whenever primary 1. The suppression chamber containment is required, water level and the volume and temperature shall be temperature of the water checked once per shift.

in the suppression A visual inspection of chamber shall be the suppression chamber maintained within the interior including water following limits: line regions and the interior painted

a. Maximum Water surfaces above the water Temperature during line shall be made at normal operation - each refueling outage.

l 90*F. Whenever there is indication of relief

b. Maximum Water valve operation which Temperature during adds heat to the any test operation suppression pool, the which adds heat to pool temperature shall the suppression be continually monitored pool - 100*F; and also observed and however, it shall logged every 5 minutes not remain above until the hest addition 90*F for more than is terminated. Whenever 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. there is indication of relief valve operation
c. If Torus water with the temperature of Temperature exceeds the suppression pool 110*F, initiate an reaching 160*F or more immediate scram of and the primary coolant the reactor. Power system pressure greater operation shall not than 200 psig, an be resumed until external visual the pool examination of the temperature is suppression chamber l reduced below 90*F. shall be conducted before resuming power
d. During reactor operation.

isolation conditions, the reactor pressure vessel shall be depressurized to less than 200 psig Amendment No. M , M,-BG 146

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

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 Testing Program temperature is above (PCLRTP).

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

3. If a portion of a system 3. (Blank) that is considered to be an extension of primary i containment is to be I opened, isolate the l affected penetration flow path by use of at least one closed and deactivated automatic valve, closed manual l valve or blind flange.
4. Whenever primary 4. The leakage from any one containment is required, main steam line the leakage from any one isolation valve shall main steam line not exceed 11.5 scf/hr isolataon valve shall at 24 psig (Pt). Repair not exceed 15.5 scf/hr and retest shall be at 44 psig (P,) . conducted to insure compliance.

Amendment No. 50, 152 147

VERMONT YANKEE NUCLEAR POWER CORPORATION Docket No. 50-271 BVY 98-69 l

Attachment 5 l

Vermont Yankee Nuclear Power Station Proposed Technical Specification Change Suppression Pool Water Temperature l Summary Report - Pesk Suppression Pool Temperature Analyses for Large Break LOCA Scenarios l

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l May 1998

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