ML19324A013
| ML19324A013 | |
| Person / Time | |
|---|---|
| Site: | Hatch  |
| Issue date: | 04/18/1980 |
| From: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | John Miller GEORGIA POWER CO. |
| References | |
| NUDOCS 8006200095 | |
| Download: ML19324A013 (2) | |
Text
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UNITED STATES 8
NUCLEAR REGULATORY COMMISSION o
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REGION il o
101 MARlETTA ST., N.W SUITE 3100 ATLANTA, GEORGIA 30303 APR 181980 In Reply Refer To:
RII:
321 50-366 Georgia Power Company Attn:
J. H. Miller, Jr.
Executive Vice President 270 Peachtree Street Atlanta, GA 30303 Gentlemen:
j The enclosed Circular No. 80.-08 is forwarded to you for information.
No written response is required. Should you have any questions related to your understanding of the recommendations on this matter, please. contact this office.
Sincerely,
(
N Jameo P. O'Reilly Director
Enclosures:
1.
IE Circular No. 80-08 2.
List of Recently Issued IE Circulars
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M. Manry, Plant Manager Post Office Box 442 Baxley, Georgia 31513 I
C. E. Belflower Site QA Supervisor Post Office to:t 442 Baxley, Georgia 31513 W. A. Widner, General Manager Nuclear Generation Georgia Power Company s
Post Office Box 4545 Atlanta, Georgia 30303 o
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SSINS No.: 6830 Ac:ession No.:
UNITED STATES 8302280651 NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT kD' WASHINGTON, D.C. 20555 U
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April 18, 1980 IE Circular No. 80-08 BWR TECHNICAL SPECIFICATION INCONSISTENCY - RPS RESPONSE TIME Description of Circumstances:
On March 10, 1980, Vermont Yankee (VY) notified the NRC that the reactor protection system (RPS) response time of 100 milliseconds (from sensor contact opening to and' including scram solenoid relay contact opening) specified in the Technical Specification is inconsistent with the value of 50 milliseconds used in the safety analysis. VY verified that actual response times have been below 50 milliseconds since initial plant operation and initiated a Technical Specification change request and plant procedure changes. VY reported that a letter from General Electric Company (GS) informed them of the inconsistency and that the problem may be generic.
Our followup indicates that GE BWR facilities which have Technical Specifications similar to that discussed above may be affected.
Based on RPS design and test results, actual RPS response times are expected to be less than 50 milliseconds.
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. For GE BWR's, we request that you take the following corrective action i
promptly after receipt of this Circular: (1) verify that the actual RPS response time in the most recent test is less than the value specified in the safety analysis, (2) observe the RPS response time value specified in the safety analysis until a Technical Specification change (if necessary) is i
approved,.and (3) take appropriate actions to make Technical Specification on i
RPS response time consistent with the RPS response time used in the safety i
analysis. If a value Icss than that currently in the Technical Specifications i
is proposed, the licensee will be expected to provide the basis for that value, including the validity of tests and methods.
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No written response to this Circular is required, however, IE will inspect licensee corrective action.
If you require additional information regarding this matter, contact the Director of the appropriate NRC Regional Office.
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O IE Circular No. 80-08 Enclosure a
April 18, 1980 RECENTLY ISSUED IE CIRCULARS Circular Subject Date of Issued to No.
. Issue 80-08 BWR Technical Specification 4/18/80 All GE BWR holding Inconsistency - RPS Response a Power Reactor OL Time 80-07 Problems with HPCI Turbine 4/3/80 All holders of a power Oil System reactor OL or CP 80-06 Control and Accountability 4/14/80 Medical licensees in Systems for Implant Therapy Categories G and G1 Sources 80-05 Emergency Diesel-Generator 4/1/80 All holders of a power Lubricating Oil Addition and reactor OL or CP Onsite Supply 80-04 Securing of Threaded Locking 3/14/80 All holders of a power Devices on Safety-Related reactor OL or CP Equipment 80-03 Protection from Toxic Gas 3/6/80 All holders of a Hazards power reactor OL 80-02 Nuclear Power Plant Staff 2/1/80 All holders of Reactor Work Hours OLs, including research and test reactors, and cps 80-01 Service Advice for GE 1/17/80 All licensees of Induction Dise Relays nuclear power reactor operating facilities and holders of nuclear power reactor cps 79-25 Shock Arrestor Strut 12/20/79 All licensees and Assembly Interference holders of power reactor
_CP_s 79-24 Proper Installation and 11/26/79 ill Holders of a Calibration of Core Spray Power Reactor OL or Pipe Break Detection
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