ML20033B844
| ML20033B844 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 11/25/1981 |
| From: | Mcgarry J DEBEVOISE & LIBERMAN, DUKE POWER CO. |
| To: | Buck J, Kohl C, Rosenthal A NRC ATOMIC SAFETY & LICENSING APPEAL PANEL (ASLAP) |
| References | |
| NUDOCS 8112020336 | |
| Download: ML20033B844 (2) | |
Text
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j L AW O FFIC E S O F' DEBEVolSE & LIBERMAN N
1200 SEVENTEENTM STREET.N.W-WASHINGTON. D C 20036
'81 iGY 27 P353 TEtC~ONE
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Mr. Alan S.
Rosenthal j
Chairman Wi DEC1 1981
- 7 Administrative Judge Atomic Safety and Licensing g
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Appeal Board Ms. Christine N.
hl j
AdministrativeJd'sN&ns{ng\\
U.S. Nuclear Regulatory Atomic Safety and IE Commission..
Washington, D.C.
20555 Appeal Board V-U.S. Nuclear Regulatory Dr. John H. Buck Commission Administrative Judge Washington, D.C.
20555 Atomic Safety and Licensing Appeal Board U.S. Nuclear Regulatory Commission Washington, D.C.
20555
Dear Members of tL't Board:
At the oral argument in this proceeding on September 10,-
1981, Duke Power Company committed to inform the Appeal Bosrd and the parties (TR 63) of any changes to the currently-installed interim hydrogen mitigation system necessary to modify it to a permanent hydrogen mitigation system.
On October 30, 1981, Duke submitted to the NRC a two-volume document totalling some 300 pages entitled "An Analysis of Hydrogen Control Measures at McGuire Nuclear Station" (a l
copy of the ' transmittal letter is attached).
This document describes the permanent hydrogen mitigation system at McGuire; j
provides reports on the status of the various research pro-l grams undertaken by Duke, and other utilities, in support of l
the distributed ignition concept for a hydrogen mitigation system; and provides responses to NRC questions on analyses, j
research programs, and equipment survivability.
l The permanent hydrogen mitigation system is quite similar to the interim system.
The basic differences are addition and relocation of upper plenum igniters; separation of gc'5 s
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1 8112O20336 811125 PDR ADOCK 05000369 o
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2-circuits by elevation in. lower containment to improve system reliability in the event of containment flooding; and instal-lation of high-temperature cable for upper plenum igniters.
The attached cover letter notes'that Duke anticipates installation of the permanent system by January 31, 1982, sub-ject to equipment delivery constraints and an outage of suffi-cient duration to complete the work.
I would note that since the submittal of the subject information, all the necessary equipment has been received by Duke, and installation of the permanent system is proceeding.
We anticipate its completion
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well before January 31, 1982.
Very truly yours, l?
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/.MichaelMcGrry,II J
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all Parties Enclosure 9
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DUICE Powsn CoxPMY
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'81 NOV 27 P3:53
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October 30, 1981 g
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MCH Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Comission Washington, D. C.
20555 Attention: Ms. E. G. Adensam, Chief Licensing Branch No. 4 Re: McGuire Nuclear Station Docket Nos. 50-359, 50-370
Dear Mr. Denton:
Attached are 20 copies of a report ehtitled "An Analysis f Hydrogen Control Measuresat McGuire Nuclear Station" dated October-1981. This report is sub-mitted in accordance with Section 2.C.(11)h. of the McGuire Operating License.
The system as described in the attached report is intendetrto be the perma-nent hydrogen control system and is expected to be installed by January 31, 1982 subject to equipment delivery constraints and a forced outage of suffi-cient duration to cocplete the remaining work inside containment.
This report will be updated as on-going research projects are completed or other circumstances arise which require changes to the document.
If there are any questions regarding the attached, please advise.
ry truly yours.
I, w ks.
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William O. Parker, Jr.
GAC/smh Attachment cc:
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M. J. Graham Mr. James P. O'Reilly, Director Resident Inspector U. S. Ik clear Regulatory Comission McGuire Nuclear Station Region II 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303 l
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