ML19350B560
| ML19350B560 | |
| Person / Time | |
|---|---|
| Site: | Humboldt Bay |
| Issue date: | 02/13/1981 |
| From: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Crane P PACIFIC GAS & ELECTRIC CO. |
| References | |
| NUDOCS 8103200897 | |
| Download: ML19350B560 (1) | |
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o UNITED STATES g
NUCLEAR REGULATORY COMMISSION n
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4,E REGION V 1990 N. CALIFORNIA BOULEVARD o,
,e"g SulTE 202, WALNUT CREEK PLAZA e,,,*
WALNUT CREEK, CALIFORNf A 94596 February 13, 1981 Docket No. 50-133 g
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P. O. Box 7442 k'
San Francisco, California 94106 j
Attention: Mr. Philip A. Crane, Jr.
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-dh Assistant General Counsel 0 iN Gentlemen:
The enclosed IE Bulletin No. 80-17, Supplement 5, is forwarded to inform you of actions that are no longer required. A written response to this
-supplement is not required.
If you desire additional information regarding this matter, please contact this office.
Sincerely,
- M R. H. Engelken Director
Enclosures:
1.
IE Bulletin No. 80-17, Supplement 5 2.
List of Recently Issued IE Information Notices cc w/ enclosures:
J. D. Shiffer W. Raymond, PG&E E. Weeks, PG&E, Humboldt Bay e
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8.10 32 c om
f SSINS No.: 6820 Accession No.:
801104259 IEB 80-17, Supp. 5 UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C.
20555 February 13, 1981 IE BULLETIN N0. 80-17, SUPPLEMENT 5:
FAILURE OF CONTROL RODS TO INSERT DURING A SCRAM AT A BWR Description of Circumstances:
On July 3,1980, the NRC issued IE Bulletin No. 80-17, that required actions to be taken by licensees of all operating-GE BWRs. Among the actions required, Item 6(a) required a prompt notification report by telephone to the appropriate Regional Office followed by a telecopy or other written submittal. These reports were required in the event _that any of the systems (HPCI, RCIC,.SLCS, RPT, RHR/ pool cooling, and main steam bypass) were found to be less than fully operable.
These reports have served the purpose of notifying NRC of cases of potential reduction in operability of_ systems-important to the mitigation'of consequences of an anticipated transient without scram (ATWS) event..These reports are no' longer necessary since improvements have been. accomplished to increase the reliability of control rod scram.
Actions No Longer Necessary by Licensees:
Further repof ting is not required in response _to Item 6(a) of IE Bulletin No. 80-17. ' This does not change the reporting requirements set forth in your license technical specifications.
.No written response to IE Bulletin 80-17, Supplement 5, is required.
If you have any questions regarding this-matter, please contact the' appropriate NRC Regional Office.
Attachment:
Recently issued IE Bulletins
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Attachment IEB 80-17, Supp. 5 February 13, 1981 RECENTLY ISSUED IE BULLETINS Bulletin No.
Subject Date Issued Issued To 81-01 Surveillance of 1/27/81 All power reactor Mechanical Snubbers facilities with an OL
& to specified facilities with CP 80-25 Operating Problems with 12/19/80 All BWR facilities Target Rock Safety-Relief with an OL & specified Valves at BWRs near term OL BWR facilities & all BWRs with a CP Supplement 4 Failure of Control Rods 12/18/80 To specified BWRs to 80-17 to Insert During a Scram with an OL & All at a BWR BWRs with a CP 80-24 Prevention of Damage 11/21/80 All power _ reactor Due to Water Leakage facilities with an Inside Containment OL or CP (October 17, 1980 Indian Point 2 Event) 80-23
~ Failures of Solenoid _
11/14/80 All power reactor Valves Manufactured by facilities with Valcor Engineering OL or CP Corporation 80-22
_ Automation Industries, 9/11/80 All radiography Model 200-520-008 Sealed-
. licensees Source Connectors 80-21 Valve yokes-supplied by 11/6/80 All light water Malcolm Foundry Company, Inc-reactor facilities with OLs or cps Supplement 3 Environmental - Qualification -
10/24/80 All power. reactor to 79-01B.
of Class 1E Equipment facilities with an OL
' Supplement 2-
-Environmental Qualification 9/30/80 All power reactor to 79-01B-of Class'IE Equipment facilities with an OL OL = Operating License CP = Construction Permit s
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