NRC Generic Letter 1980-03
| ML031350280 | |
| Person / Time | |
|---|---|
| Issue date: | 01/10/1980 |
| From: | Ippolito T Office of Nuclear Reactor Regulation |
| To: | |
| References | |
| GL-80-003, NUDOCS 8002150178 | |
| Download: ML031350280 (2) | |
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Docket SSheppard JANUARY JO NRC PDR NSIC GI -&--3 Local PDR TERA
ORB#3 Rdg ACRS (16)
NRR Rdg File Docket No. 50-220 DEisenhut GLainas RTedesco RRiggs WGammil1 RVollmer ir.- Donald P. Dise BGrimes Vice President - Engineering JMiller Niagara Mohawk Power Corporation LShao
300 Erie Boulevard West OELD
Syracuse, New York 13202 OI&E (3)
TIppolito Dear Mr. Dise: PPolk In response to our letter of August 29, 1978, you provided information on your 1977 experience of control rods failing to fully insert. We evaluated your response along with those provided by other BWR owners. We concluded that such events are general and that the frequencies of occurrence vary among the BWRs, apparently because of different maintenance programs.
Our August 29, 1978 letter recommended that you maintain an ongoing tabulation of any additional such events. To determine whether or not the frequency of these events has changed for a given plant, we now request that you report your more recent experience. This report should include the experience from.
the time of the last reported occurrence through 1979. In addition please provide a summary of other control rod drive malfunctions, such as unlatchings, for the same time period.
The infoffiation should be provided within 90 days. For each event, identify the number of rods not fully inserted, the position of the rods, the cause for failure to fully insert, and any related maintenance activities.
This request for additional generic Information is in accordance with the GAO blanket clearance number B-180225 (R0536) which expires June 30, 1981.
Sincerely, Orioan.j Signed by T. A. Ippoiito Thomas A. Ippolito, Chief Operating Reactors Branch #3 Division of Operating Reactors
8002150 /;Zm IOB#3 OR3#
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1979.2...89369 NRC FORM 318 (9-76) NRCM 024G *U.S. GOVERNMENT PRINTING OFFICE: 1979-289 369
h :' Mr. Donald P. Dise Niagara Mohawk Power Corporation - 2 -
cc:
Eugene B. Thomas, Jr., Esquire LeBoeuf, Lamb, Leiby & MacRae
1757 N Street, N. W.
Washington, .D. C. 20036 Anthony Z. Roisman Natural Resources Defense Council
917 15th Street, N. W.
Washington, D. C. 20005 Oswego County Office Building
46 E. Bridge Street Oswego, New York 13126