ML19206A331
| ML19206A331 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 11/30/1977 |
| From: | Treby S NRC OFFICE OF THE EXECUTIVE LEGAL DIRECTOR (OELD) |
| To: | Linenberger G, Luton E, Salo E Atomic Safety and Licensing Board Panel, WASHINGTON, UNIV. OF, SEATTLE, WA |
| References | |
| NUDOCS 7904190325 | |
| Download: ML19206A331 (2) | |
Text
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November 30. 1977 Edward Luton, Esq., Chairman Mr. Gustave A. Linenberger Atomic Safety and Licensing Board Atomic Safety and Licensing Board U.S. Nuclear Regulatory Commission U.S. Nuclear Regulatory Commission Washington, D. C.
20555 Washing ton, D. C. 20555 DISTRIBU1 ION Dr. Ernest O. Salo H. Silver Professor, Fisheries Research S. Varga Institute, WH-10 J. Norris College of Fisheries W. Regan University of Washington H. McGurren Seattle, Washington 98195 G. Fess S. Treby H. Shacar In the Matter of Metropolitan Edison Company, et al.
T. Engell ardt (Three Mile Island Nuclear Station, Unit 2)
. w ssman Docket No.10-un E. Smith ELD Formal File C*"O "" *"
- NRC Central File Attached for your information is a letter from Mr. Robert Pollard to The LPDR Honorable Griffin Bell, dated October 13, 1977, which raises two specific technical issues.
The first issue deals with the adequacy of the off-site electrical power system reliability for the Turkey Point Units 3 and 4 and St. Lucie Units 1 and 2 nuclear power facilities. The Staff believes that these issues have no special relevance to this facility, and that the Staff's comments in its letters of December 27, 1976 and February 7,1977 remain valid. The generic aspects of this issue have been discussed in Staff reports previausly provided to the presiding Atomic Safety and Licensing Board on December 27, 1976 and February 7,1977. II Information related to this particular issue is contained in issues 9,10 and 24 of these documents.
The second technical issue raised in Mr. Pollard's letter deals with an occurrence at the Zion 6H11ty of the Commonwealth Edison Company in if These documents are MUREG-0138, " Staff Discussion of Fifteen Techni-cal Issues Listed in Attachment to November 3,1976 Memot andum from Director, NRR to NRR Staff," which was published in November 1976 and NUREG-0153, " Staff Discussion of Twelve Additional Technical Issues Raised by Responses to November 3,1976 Memorandum from Director, BRR to NRR Sta11" which was published in December IWo.
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July 1977 and the related question of the adequacy of separation criteria for reactor protection and control systems. Mr. Pollard included copics of several NRC documents on this issue, but specifically discusses in his letter only the August 18, 1977 memorandum from Dr. IIanauer, Techni-cal Advisor to the Executive Director of Operations to Mr. Case, Acting Director, Office of Nuclear Reactor Regulation. As discussed in the memorandum dated September 23, 1977 from Mr. Case to Dr. Hanauer, it is the Staff's view that the existing NRC regulations and related licensing criteria for the design, testing anc operation of protection and control systems are adequate to assure continued safe operation of operating reactors and that there is no immediate need to modify our current criteria. As that memorandum notes, the issue of separation of control and protection systems is a 1cngstanding one which has had considerable discussion within the nuclear industry over the years. Subsequently,
Dr. Hanauer wrote to Mr. Case on September 28, 1977 and indicated that the NRC actions with regard to these matters which were described in an attachment to Mr. Case's September 23, I?77 memo "... are appropriate as to scope and timing." Dr. Hanauer also wrote to Mr. Pollard on Septem-ber 23.1977. A copy of this material as well as some additional material is contained in the attachment to Mr. Pollard's letter to Mr. Bell.
The Staff is continuing to evaluate systems interactions, including those between protection and control systems, in conjunction with the Staff's technical activities program. The Staff is presently in the process (.,i developing a task action plan to deal with this issue. How-ever, as indicated in Mr. Case's response to Dr. Hanauer, the Staff believes that existing licensing criteria for protection and control systems assure adequato protection against undesirable s/ stems inter-action, and that protection and control systems designed to meet these criteria assure the continued safe operation of operating facilities.
Sincerely, Stuart A. Treby Assistant Chief Hearing Counsel for NRC Staff Enclosur-Ltr. Sn. R. Pollard to The Hononorable Griffin Ben dtd 10/13/77 w/ enclosures cc w/ enclosure:
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