ML19210C900
| ML19210C900 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 10/31/1979 |
| From: | Parker W DUKE POWER CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| IEB-79-24, NUDOCS 7911200282 | |
| Download: ML19210C900 (2) | |
Text
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'go 'g;,o DUKE Power < ConPAxy PowEn Brin.nswo 422 SorTu Citrucii STREET, CHARLOTTE N. C. 28242
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Vice Pots.orm?
October 31, 1979 Trar -o~cA t>tc4 Sitae Pocovet.om 3 7 3-4 0 e 3 Mr. J. P. O'Reilly, Director U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, Suite 3100 Atlanta, GA 30303 Re: McGuire Nuclear Station IE Bulletin 79-24 RII:JP0 50-369 and 50-370
Dear Mr. O'Reilly:
Attached is Duke Power Company's response to IE Bulletin 79-24 which was transmitted in your letter of September 27, 1979.
Very truly yours,
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William O. Parker, Jr.
THH/sch Attachment 1361 J32
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th Anniversary
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t McGuire Nuclear Station i
Response to IE Bulletin 79-24 A review of the design of McGuire Nuclear Station has revealed that adequate protective measures have been taken to prevent safety-related process, instrument, and sampling lines from freezing. All safety-related piping buried outdoors is covered by a minimum of 24 inches of soil.
This piping is therefore buried below the Charlotte area frost line, which can vary from 12 to 20 inches. All safety-related lines located in covered trenches or supported above the ground are heat traced and insulated.
In addition the vent and instrumentation lines on the RWST are heat traced, monitored for low temperature, insulated, and covered with stainless steel sheathing.
Duke Power Company is also in the process of providing heat tracing on the RWST overflow and recirculation lines. These modifications will be complete by January 1, 1980.
136i 033