NUREG/CR-0660, Forwards Sample Ltr to Applicants,Cp Holders & Licensees of LWRs Transmitting NUREG/CR-0660 Enhancement of Onsite Emergency Diesel Generator Reliability
| ML19281B037 | |
| Person / Time | |
|---|---|
| Issue date: | 04/02/1979 |
| From: | Vollmer R Office of Nuclear Reactor Regulation |
| To: | Vassallo D Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-CR-0660, RTR-NUREG-CR-660 NUDOCS 7904200176 | |
| Download: ML19281B037 (4) | |
Text
.-
y
,.5 b
/
(
M
'i UNITED STATES j
NUCLEAR REGULATORY COMMISSION 3%
f' 3..( Y ! $
WASHINGTON, D. C. 20555
- m g
k+%)(/
APR 2 1979 MEMORANDUM FOR:
D. Vassallo, Assistant Director for Light Water Reactors, Division of Project Management FROM:
'R. Vollmer, Assistant Director for Systems and Projects, Division of Operating Reactors
SUBJECT:
, LETTER TO APPLICANTS, CONSTRUCTION PERMIT HOLDERS AND LICENSEES OF LIGHT WATER POWER REACTORS FORWARDING NUREG 0660 " ENHANCEMENT OF ONSITE EMERGENCY DIESEL GENERATOR RELIABILITY" A review of the operating experience of the onsite emergency diesel generator system indicates that their reliability might be irr *oved.
The reliability of these units are strongly dependent on the interaction of the following factors: design, testing and operational requirements, operational history, inspections, maintenance, and the qualifications of operators. To assist us in identifying the major problems and the respective recommended corrective actions, a contract wa: given to the University of Dayton Research Institute. The enclosed report by the University of Dayton, " Enhancement of Onsite Emergency Diesel Generator Reliability" presents their findings and recommendations.
Information for the report was collected from a number of sources: a previous NRC reliability study; licensee event reports (LER), from 1969 through late 1977; operating nuclear power plant licensee responses to a questionnaire; and visits to twenty operating reactors and four engine manufacturers.
Information was also obtained from a literature search, visits to two non-nuclear large-scale users of standby emergency diesel generator units, and from the applicable NRC Regulatory Guides, NRC Standard Review Plans, NRC Branch Technical Positions, Code of Federal Regulations, and IEEE Standards.
The attached letker and NUREG document should be transmitted to all light water power reactor applicants, construction permit holders and 7904200/74 9
,~
. licensees by April 4,1979 using the automatic mailing system.
If you have any problems with doing this either in general or for any specific plant, please contact F. Clemenson, X27110.
bE 2%
x g
' R. V611nier, Assistant Director for Systems and Projects Division of Operating Reactors
Enclosures:
1.
Sample Letter 2.
.O
M UNITED STATES j
NUCLEAR REGULATORY COMMISSION yi.
{..()1 j
WASHINGTON, D. C. 20555 s ;*g p
SAMPLE LETTER
+...+
All Light Water Power 7eactor Licensees Gentlemen:
This letter is being sent to all licensees authorized to operate 0:-
construct a light water power reactor and to all applicants for a license to operate or construct a light water power reactor.
A review of the operating experience of the emergency onsite diesel generators at light water reactors as reported in the Licensee Event Reports (1969-1975) indicates that their reliability could be improved.
The reliability of the diesel generator is strongly dependent on the interaction of the following factors: design, testing and operational requirements, operational history, inspections, maintenance, and the personnel qualifications of operators. To assist us in identifying any significant deficiencies, the University of Dayton Research Institute, under our contract, prepared a report entitled " Enhancement of Onsite Emergency Diesel Generator Reliability" (NUREG 0660) which identifies the major problems together with recommended corrective actions for improving reliability. We will review the report and evaluate each recommendation for its applicability to all licensees authorized to operate or construct light water power reactors and to all applicants for a license to operate or construct a light water power reactor by balancing the potential improvement in reliability versus the adverse impact of implementing the recomendation on the plants.
Since our review and evaluation of the report has not been completed we are enclosing a copy of NUREG 0660, the University of Dayton Research Institute report, for your information and comments. Comments or other factors which may be considered major problems preventing improved onsite emergency diesel generator reliability are encouraged
2-and should be forwarded to Fred Clemenson, Plaitt Systems Branch, Division of Operating Reactors, U. S. Nuclear Regulatory Commission, Washington, D.C.
20555.
D. Eisenhut, Deputy Director Division of Operating Reactors
Enclosure:
i Enhancement of Ons te Emergency Diesel Generator Reliability NUREG 0660
h*. ~e a
O O
NUREGER-0660 UDR-TR-7947 ENHANCEMENT OF ON-SITE EMERGENCY DIESEL GENERATOR RELIABlLITY Final Report
'5 Gerald L. Boner
~
Harvey W. Hanners University of Dayton Research Institute Prepared for U. S. Nuclear Regulatory Commission
N U REG ER4660.._ __._.
UpR,-TR-79_-07_ _
ENHANCEMENT OF ON-SITE EMERGENCY....
DIESEL GENERATOR RELIABILITY Final Report Gerald L. Boner Harvey W. Hanners University of Dayton Research Institute Dayton, OH 45469 Manuscript Completed: January 1979 Date Published: February 1979
. Prepared for Division of Operating Reactors Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D C. 20555 Under Contract No. NRC.03 77-192
.