ML18017B112
| ML18017B112 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 06/09/1980 |
| From: | Mcduffie M CAROLINA POWER & LIGHT CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| IEB-80-05, IEB-80-5, NUDOCS 8006240285 | |
| Download: ML18017B112 (3) | |
Text
Carolina Power 8 Light Company June 9, 1980 0
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Mr. James,P.
O'Reilly Region II United States Nuclear Regulatory Commission 101 Marietta Street, NW Atlanta, Georgia 30303 SHEARON HARRIS NUCLEAR POWER PLANT UNIT NOS ~
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AND 4 DOCKET NOS. 50-400, 50-401,40-402, AND 50-403
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Dear Mr. O'Reilly:
As requested in IE Bulletin 80-05, Carolina Power 6 Light Company (CP&L) has reviewed the design of all systems that contain low pressure or holdup tanks that can be valved to contain primary system water for the Shearon Harris Nuclear Power Plant (SHNPP).
In all cases, adequate measures have been provided to protect against vacuum conditions that could result in tank damage with the potential for release of radioactive material or detrimental effects with regard to overall safety of plant operations.
Please find attached a listing of the sub)ect tanks and the measures taken to protect them against vacuum conditions.
In providing these measures adequate consideration has been given to a) admission rates of cover gases, if applicable, b) surveillance programs for vacuum relief valves and c) freeze protection, if applicable.
bulletin.
Carolina Power 6 Light Company intends no further response to this Yours very truly, M. A. McDuffie Senior Vice President Engineering 6 Construction MAM/JJS/pfb cc:
United States Nuclear Regulatory Commission Office of Inspection and Enforcement Division of Reactor Operations Inspection Washington, D. Ci 20555 411 Fayetteville Street
~ P. O. Box 1551
~ Raleigh, N. C. 27602 s o eeecogg p
ATTACHMENT LOW PRESSURE OR HOLDUP TANKS AT SHNPP VALVED TO THE PRIMARY SYSTEM TANK PROTECTIVE MEASURES AGAINST VACUUM Accumulator Tank
. Tank external design pressure is 60 psig.
Therefore, tank is more than adequate to withstand full vacuum condition 2 ~
RCS Drain Tank Same as above 3 ~
Volume Control Tank Tank is designed for full vacuum condition (external design pressure 15 psig) 4.
Pressurizer Relief Tank Tank is designed for full vacuum condition (external design pressure 15 psig) 5.
CCW Surge Tank Tank is provided with a va'cuum breaker 6 ~
Boric Acid Batch Tank Tank is provided with an overflow vent 7.
Boron Surge Tank Tank is provided with an overflow vent 8.
Chiller Surge Tank Tank is provided with a top vent 9.
Waste Evaporator Condensate Tank Tank is provided with a diaphragm, top vent and overflow vent 10.
RCP Seal Standpipe Equipped with a top vent ll.
Boron Injection Tank No viable mechanism available to draw vacuum in tank under system operational conditions 12.
Waste Gas Decay Tank No viable mechanism available to draw vacuum in tank under system operational conditions 13.
Chemical Drain Tank No viable mechanism available to draw vacuum in tank under system operational conditions 14.
Recycle Holdup Tank Tank is provided with a diaphragm, a top vent and an overflow vent
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