ML19338C461
| ML19338C461 | |
| Person / Time | |
|---|---|
| Site: | Humboldt Bay |
| Issue date: | 07/29/1980 |
| From: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Crane P PACIFIC GAS & ELECTRIC CO. |
| References | |
| NUDOCS 8008150439 | |
| Download: ML19338C461 (1) | |
Text
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UNITE 3 STATES NUCLEAR REGULATORY COMMISSION o
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REGION V o%,e',,,o,/
isso N. CALIFORNIA BOULEVARD sulTE 202, WALNUT CREEK PLAZA WALNUT CREEK, CALIFORNIA 94506 July 29,1980 Docket No. 50-133 Pacific Gas and Electric Company 77 Beale Street San Francisco, California 94106 Attention: Mr. Philip A. Crane, Jr.
Assistant General Counsel Gentlemen:
Tile enclosed Information Notice supplements Information Notice No. 80-06
" Notification of Significant Events," and provides clarification on types of events that are required to be reported in accordance with 10 CFR 50.72,
" Notification of Significant Events."
Sincerely, ifRL #d R. H. Engelken Director
Enclosures:
1.
Supplement to IE Infonnation Notice No. 80-06 2.
List of Recently Issued IE Information Notices cc w/ enclosures:
J. D. Shiffer W. Raymon U G&E E. Weeks, PG&E, Humboldt Bay
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L'NITED STATES 55IN5 No.: 6570 NUCLEAR REG'JLATORY CCWISSICN Accessions Sc.:
OFFICE OF INSFECTION AND EhFORCEFINT E005190035 WASHINGTCN, D.C.
20555 July 29, 1950 Supple:ent to IE Infor:ation Netice No. 80-C5
- N0ilFICATICN OF SIGNIFICANT EVENTS AT OPERATING PC'IR REACTOR F Descriptien of Circumstances:
IE Infor ation Notice No. 80-06 (IN 80-05) issued en February 27, 1953, for-arced a Federal Register Notice which indicated that the NR* regulations were a enced by adding a ne. 5 50.72, " Notification of significant events", to 10 CFR Part 50.
The effective date of the ne rule was ;2hruary 29, 1980.
This Infor ation Notice supple:ents IN EO-06 and provides clarificatien en types of events that are required to be reported in accorcance with the rule.
Public ccerents en the rule indicate the need fer ecre cetailed clarificatien en what c currences are rescrtable in regard to certain e ent tp es listed in the rule.
Co centers particularly stressec the need to establish ecre cefini-tive thresholds for nctificatiens of certain ty;es of events.
Experience sc far with notifications being race in a::ctdance with i 50.72 also suggest tne-need for clarification a.d : ore definitive guidance.
The general cate;criza -
tion of sc e of the event tp es listed in the rule has resulted in nctifica-tiens of events of less significance than was originally intended.
As stated in the Federal Register Notice irple:enting 5 50.72, the rule was interced to require in ediate notification of *sericus events that ccuic result in an irpact on the public healtn and safety."
Tne notificatien require:ents in ! 50.72 are currently teing evaluated to ceternine actions needed in light of public cernents en and ex;erience with the rule.
Notwithstanding future actions which cay incluce scee cccificatiens to the rule and su;ple:entary regulatory guidance, a short tern need exists for clarifying the threshoics for notifications of certain categories of The folle ing paragraphs provide clarification en what is reportatie events.
pursuant to the event categcries listed in itens (1), (7) and (9) of the rule.
Iter (1) of 5 50.72(a) recuires notification of: "Any event requiring initiation of the licensee's e:ergency plan or any secticn of that plan."
Notifications under this ite:
refer to those initiating events cr cer4itions that place the facility in a "Notificatic. of Unusual Event" status.
An unusual event indicates a potential degradation cf the level of safety of tne plant.
Exa ales of initiating esents or cenditions that =culd be catepri:ed as an unusual event are listed on the enclosec pages 4 and 5 of NUREG-0510
" Draft Energency Action Level Guicelines for Nuclear Pe.er Plants" (A:;encis 1 to h'JREG-0654, " Criteria for Preparation and Evaluation of Radic1cgical E=ergency Response Plans and Preparedr-~ "
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a' t "' a ~ *wD'"**"b It is recognized that sore overlap an requireeents of iten (1) and other its.
DUPLICA E.N. X'r.:.3-Entire docu-ent previcusly entered inte syster unde :
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ANO No. cf paces:
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