96-31438. Draft NUREG/CR Report; Availability

[Federal Register Volume 61, Number 239 (Wednesday, December 11, 1996)]
[Notices]
[Pages 65247-65248]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 96-31438]


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NUCLEAR REGULATORY COMMISSION

Draft NUREG/CR Report; Availability

    The Nuclear Regulatory Commission has made available, a draft 
NUREG/CR-6412, ``Aging and Loss-of-Coolant Accident (LOCA) Testing of 
Electrical Connections.'' About 12 different types of connections 
commonly used in nuclear power plants were tested by the Sandia 
National Laboratories and the test results are reported in the draft of 
NUREG/CR-6412. The connections were aged for 6 months under 
simultaneous thermal (99 degrees C) and radiation (45 GY/hr) conditions 
to simulate 60 years in a nuclear power plant environment. The 
objective of this program was to investigate the performance of 
connections aged to a 60-year life to determine their suitability for 
life extension beyond the current nominal 40-year qualified life. The 
results show that 50% of the connection types were unable to 
successfully pass the submerged dielectric test following a simulated 
life of 60-year and LOCA exposure. The problems were not limited to any 
one family of electrical connections.
    The preliminary review of this draft NUREG/CR by the NRC staff 
indicates that the test results are inconclusive and that the 
additional investigation is warranted. However, the NRC staff believes 
that this draft report will be of interest to the nuclear industry. 
Comments, if submitted by February 28, 1997, would be considered by the 
NRC staff. Written comments may be submitted to the Rules Review and 
Directives Branch, Division of Freedom

[[Page 65248]]

of Information and Publications Services, Office of Administration, 
U.S. Nuclear Regulatory Commission, Washington, DC 20555. Copies of 
comments received may be examined in the NRC Public Document Room, 2120 
L Street, NW. (Lower Level), Washington, DC.
    A copy of the draft NUREG/CR-6412 is available for inspection at 
the Commission's Public Document Room. Requests for a single copy of 
the draft NUREG/CR should be made in writing to Mr. Satish K. Aggarwal, 
Senior Program Manager, U.S. Nuclear Regulatory Commission, Washington, 
DC 20555; or by fax at [phone]. Telephone requests cannot be 
accommodated.

    Dated at Rockville, Maryland, this 5th day of December, 1996.

    For the Nuclear Regulatory Commission.
Andrew J. Murphy,
Acting Director, Division of Engineering Technology, Office of Nuclear 
Regulatory Research.
[FR Doc. 96-31438 Filed 12-10-96; 8:45 am]
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