ML19338C398
| ML19338C398 | |
| Person / Time | |
|---|---|
| Site: | Fort Saint Vrain  |
| Issue date: | 07/29/1980 |
| From: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Millen C PUBLIC SERVICE CO. OF COLORADO |
| References | |
| NUDOCS 8008150354 | |
| Download: ML19338C398 (1) | |
Text
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NUCLEAR REGULATORY COMMISSION PDR:HQ 3.@t-
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July 29, 1980 Docket No. 50-267 1
l Public Service Company of Colorado l
ATTN:
Mr. C. K. Millen Senior Vice President P. O. Box 840 Denver, Colorado 80201 Gentlemen:
The enclosed IE Information Notice supplements Infor: nation Notice No.
80-03 " 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, G
bb(
. &Y Karl V. Seyfrit Director
Enclosures:
1.
Supplemental IE Information Notice No. 80-06 2.
List of Recently Issued IE Informacion Nocices cc:
D. W. Warembourg, Nuclear Production Manager Forr St. Vrain Nuclear Station l
P. O. Box 368 j
Platteville, Colorado 80651 L. Brey, Manager, Quality Assurance 800815035#[
Q.
UNITED STATES SSINS No.: 6870 NUCLEAR REGULATORY COMMISSION Accessions No.:
OFFICE OF INSPECTION AND ENFORCEMENT 8006190035 WASHINGTON, D.C.
20555 July 29, 1980 Supplement to IE Iaformation Notice No. 80-06 I40TIFICATION OF SIGNIFICANT EVENTS AT OPERATING POWER KACTOR FACILIT Description of Circumstances:
IE Information Notice No. 80-06 (IN 80-06) issued on February 27, 1980, forwarded a Federal Register Notice which indicated that the NRC regulations were amended by adding a new 6 50.72, " Notification of cignificant events", to 10 CFR Part 50.
The effective date of the new rule was February 29, 1980.
This Information Notice supplements IN 80-06 and provides clarification on types of events that are required to be reported in accordance with the rule.
~
Public comments on the rule indicate the need for more detailed clarification on what occurrences are reportable in regard to certain event types listed in the rule.
Commenters particularly stressed the need to establish more defini-tive thresholds for notifications of certain types of events.
Experience so,
far with notifications being made in accordance with S 50.72 also suggest the-need for clarification and more definitive guidance.
The general categoriza.
tion of some of the event types listed in the rule has resulted in notifica-tions of events of less significance than was originally intended.
As stated in the Federal Register Notice implementing 6 50.72, the rule was intended to require immediate notification of " serious events that could result in an impact on the public health and safety."
The notification requirements in S 50.72 are currently being evaluated to determine actions needed in light of public comments on and experience with the rule.
Notwithstanding future actions which may include some modifications to the rule and supplementary regulatory guidance, a short term need exists for clarifying the thresholds for notifications of certain categories of events.
The following paragraphs provide clarification on what is reportable pursuant to the event categories listed in items (1), (7) and (9) of the rule.
l Item (1) of 6 50.72(a) requires notification of: "Any event requiring initiation of the licensee's emergency plan or any section of that plan."
Notifications under this item refer to those initiating events or conditions that place the facility in a " Notification of Unusual Event" status.
An l
unusual event indicates a potential degradation of the level of safety of the plant.
Examples of initiating events or conditions that would be categorized as an unusual event are listed on the enclosed pages 4 and 5 of NUREG-0610,
" Draft Emergency Action Level Guidelines for Nuclear Power Plants" (Appendix 1 to NUREG-0654, " Criteria for Preparation and Evaluation of Radiological Emergency Response Plans and Preparedra~ i t"--a-+ af una nse Davec D b a4" h_ __
It is recognized that some overlap anc requirements of item (1) and other itt.
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