NUREG-0523, Forwards NUREG-0523, Summary of Operating Experience W/Recirculating Steam Generators, Which Focuses on Recent Problems W/Degradation.Believes Continued Plant Operation Does Not Constitute Undue Risk
| ML16341C896 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 03/02/1979 |
| From: | Eisenhut D Office of Nuclear Reactor Regulation |
| To: | Morrissey J PACIFIC GAS & ELECTRIC CO. |
| References | |
| NUDOCS 7903270592 | |
| Download: ML16341C896 (8) | |
Text
~zi A
+a**+
1 Docket Nos.
50-275 and 50-'323 UNITEDSTATES
'CLEAR REGULATORYCOMMISSION WASHINGTON, D. C. 205SS
'stribution et Fi e
N C
PDR Local
& General Counsel Pacific Gas
& Electric Comoany 77 Beale Street San Francisco, California 94106 ACRS (16)
R. Vollmer D. B. Vassallo Gentlemen:
This letter is being sent to all licensees authorized to operate or construct a pressurized water power reactor and to all applicants for a license to operate or construct a pressurized water power reactor.
Operating problems have occurred in Pressurized Water Reactor (PWR) steam generators.
The enclosed report, "Summary of Operating Experience with Recirculating Steam Generators,"
NUREG 0523, focuses on the problems associated with steam generators of the recirculation type, i.e., those manufactured by Combustion Engineering and Westinghouse.
The report dis-cusses the NRC staff's evaluation of these problems and the programs for resolving these problems.
The NRC has recently identified steam generator degradation as an Unresolved Safety Issue deserving the highest priority for resolution.
However, for the reasons identified in the report, the.NRC staff has concluded that con-tinued operation of existing plants an'd licensing of new plants with recir-culation type steam generators, pending completion of our review, does not constitute an undue risk to the health and safety of the public and there-fore may continue.
It should be noted that a number of research efforts are currently under way which will improve our knowledge of steam generator degradation mech-
, anisms.
The information presented in the report represents our current understanding of each issue.
Coments on this report and information gOSgg 0
l
8 MAR 8.
579 related to steam generator degradation mechanisms are encouraged
- and, should be forwarded to Dr. Boen-Dar Liaw, Engineering Branch, Division of Operating Reactors, U.S. Nuclear Regulatory Comnission, Washington, D.C. 20555.
Enclosure:
Summary of Operating.Experience with Recirculating Steam Generators, January
- 1979, NUREG 0523 cc:
See next page (w/o encl)
~
E>
e h
e uty Director Division of Operating Reactors
\\
Cl Mr. John C. Morrissey cc:
Mr. John Marrs Managing Editor San Luis Obispo County Telegram - Tribune 1321 Johnson Avenue P. 0.
Box 112 San Luis Obispo, California 93406 Philip A. Crane, Jr., Esq.
Pacific Gas
& Electric Company 77 Beale Street San Francisco, California 94106 Janice E. Kerr, Esq.
Califo'rnia Public Utilities Coranission 350 McAllister Street San Francisco, California 94102 Mr. Frederick Eissler, President Scenic Shoreline Preservation Conference, Inc.
4623 More Mesa Drive Santa Barbara, California 93105 Ms. Elizabeth E. Apfelberg 1415 Cazadero San Luis Obispo, California 93401 Ms. Sandra A. Silver 1792 Conejo Avenue San Luis Obispo, California 93401 Mr. Gordon A. Silver 1792 Conejo Avenue San Luis Obispo, California 93401 Paul C. Valentine, Esq.
321 Lytton Avenue Palo Alto, California 94302 Yale I. Jones, Esq.
19th Floor 100 Van Ness Avenue San Francisco, California 94102 Alan S. Rosenthal, Esq.
Atomic Safety 8 Licensing Appeal Board U. S. Nuclear Regulatory Commission Washington, D. C.
20555 Elizabeth S. Bowers, Esq.,
Chairman Atomic Safety 8 Licensing Board U. S. Nuclear Regulatory Commission Washington, D. C.
20555 Mr. Glenn 0. Bright Atomic Safety 8 Licensing Board U. S. Nuclear Regulatory Commission Washington, D. C.
20555 Tolbert Young P. 0. Box 219 Avila Beach, California 93424 Richard S. Salzman, Esq.,
Chairman Atomic Safety 8 Licensing Appeal Board U. S. Nuclear Regulatory Commission Washington, D. C.
20555 Dr.
W. Reed Johnson Atomic Safety
& Licensing Appeal Board U. S. Nuclear Regulatory Commission Washington, D. C.
20555 Mr. Richard Hubbard MHB Technical Associates 366 California Avenue Palo Alto, Cal,ifornia 94306
V.
Nr. John C. Horrissey cc:
Ns.
Raye Fleming 1746 Chorro Street San Luis Obispo, California 93401 Brent Rushforth, Esq.
Center for Law in the Public Interest 10203 Santa Nonica Boulevard Los Angeles, California 90067 Arthur G. Gehr, Esq.
Snell
& Wilmer 3100 Valley Center Phoenix, Arizona 85073 Hr. James
- 0. Schuyler, Project Engineer Pacific Gas
& Electric Company 77 Beale Street San Francisco, California 94106 Bruce Norton, Esq.
3216 North 3rd Street Suite 202 Phoenix, Arizona 85012 Nr.
W. C.. Gangloff Westinghouse Electric Corporation P. 0.
Box 355 Pittsburgh, 'Pennsylvania
.15230 Nichael R. Klein, Esq.
Wilmer, Cutler
& Pickering 1666 K Street, N.
W.
Washington, D. C.
20006 David F. Fleischaker, Esq.
1025 15th Street, N.
W.
5th Floor
'Washington, D.
C.
20005 Dr. William E. Hartin Senior Ecologist Battelle Hemorial Institute
- Columbus, Ohio 43201
C
~a ~T
~
~