ML25196A429
| ML25196A429 | |
| Person / Time | |
|---|---|
| Issue date: | 09/16/1976 |
| From: | Moeller D Advisory Committee on Reactor Safeguards |
| To: | Rowden M NRC/Chairman |
| References | |
| Download: ML25196A429 (1) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEE ON REACTOR SAFEGUARDS WASHINGTON, D. C. 20555 September 16, 1976 Honor able Marcus A. Ro\\..tlen Chairman United States Nuclear Regulatory Commission Washington, OC 20555 CIARIFICATION OF AUGUST 17, 1976 ACRS REPORI' ON DESIGN PROVISIONS FOR PROTEC'TICN AGAINST SAOOI'AGE
Dear Mr. Rowden:
In order to provide clarification of its re_fX)rt of August 17, 1976, on Design Provisions for Protection Against Sabotage, the ACRS offers the following additional information.
Project reports in which the ACRS has recently commented on the need for studies cf design provisions to protect against sabotage are listed in Attachment A.
In these reports the Committee has recorrnnended that the NRC Staff and the Applicants review the proposed plants for design features that could reduce the possibility and consequences of sabotage.
In its report of October 14, 1975, on industrial sabotage the Committee noted:
nThe NRC Staff has taken steps to reduce the possibility of industrial sabotage at nuclear power plants, particularly with regard to control of unauthorized access, although detailed criteria have not yet been developed and a considerable vari-ation exists among plants currently proposed for construction permits. The Office of Regulatory Research has also funded useful studies concerning possible modes of sabotage by individuals or groups external to the operating organization. some recommendations regarding possible design changes resulted from these studies.
'!he ACRS has reconnnended in several project reports that deliberate attention be given to aspects of desin:*1 that could improve plant security. The Committee believes that, at this time wh'*:: emphasis is being placed on standardized plant designs, increased attention should be given to design measures which would further protect against industrial sabotage or mitigate the consequences ther,if.
'!he ACRS would be willing to cooperate actively with any special NRC-sponsored working group in order to accelera.te achievement of these objectives."
3365
Honorable Marcus September 16, 1976 The studies made by and for the NRC Staff to which the ACRS was referring are those recently made by the Sandia Laboratories on the vulnerability of nuclear power plants to sabotage.
The phrase, "bunkered, dedicated systems," means systems whose sole function would be to assure decay heat removal under emergency conditions.
These systems would be physically secured against unauthorized access and would include all necessary instrumentation, control, power, and complete cooling capability.
By "spatial redundancy, 11 the Conmittee intended to convey a degree of physical separation which would make difficult and unlikely the complete loss of a capability currently provided by physically redundant, although not necessarily adequately separated, systems.
Attaclnnent: A 3366 Dade w. Moeller Chairman
Attachment A January 13, 1976 February 11, 1976 February 11, 1976 April 16, 1976 May 12, 1976 May 13, 1976 June 11, 1976 July 14, 1976 August 18, 1976 September 15, 1976 3367 Interim Report on Koshkonong Nuclear Plant, Units 1 and 2 Interim Report on Pebble Springs Nuclear Plant, Units 1 and 2 Report on SWESSAR-Pl, Stone and Webster Engineering Corporation Balance-of-Plant Design Report on Washington Public Power Supply System Nuclear Projects No. 3 and No. 5 Report on Koshkonong Nuclear Plant, Units 1 and 2 Report on Hartsville Nuclear Plants, Units A-1, A-2, B-1 and B-2 Report on SWESSAR:-Pl, Stone and Webster Engineering Corporation Balance-of-Plant Design as Applied to Combustion Engineering, Inc.
CESSAR-80 Report on Westinghouse Electric Corporation Reference Safety Analysis Report, RESAR-3S Report on SWESSAR-Pl, Ston~ and Webster Engineering Corporation Balance-of-Plant Design as Applied to the Westinghouse Electric Corporation RESAR-3S NSSS Design Interim Report on Montague Power Station, Units 1 and 2