ML19290C182
| ML19290C182 | |
| Person / Time | |
|---|---|
| Site: | 05000580, 05000581 |
| Issue date: | 12/13/1979 |
| From: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Mcwhorter R OHIO EDISON CO. |
| References | |
| NUDOCS 8001100279 | |
| Download: ML19290C182 (1) | |
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Docket No. 50-580 Docket No. 50-581 The Ohio Edison Company ATTN:
Mr. R. J. McWhorter Vice President Engineering 76 South Main Street Akron, OH 44308 Gentlemen:
This Information Notice is provided as an early notification of a possibly significant matter.
It is expected that recipients will review the informa-tion for possible applicability to their facilities. No specific action or response is requested at this time. If further NRC evaluations so indicate, an IE Circular or Bulletin will be issued to recommend or request specific licensee actions.
If you have questions regarding this matter, please contact the Director of the appropriate NRC Regional Office.
Sincerely, James G. Keppler Director
Enclosure:
IE Information Notice No. 79-31 cc w/ encl:
Central Files Director, NRR/DPM Director, NRR/ DOR PDR Local PDR NSIC TIC Harold W. Kohn, Ohio Power Siting Commission 1727 358 RIII RIII Fiore Ke pler 12/12/9 8 001100 E 7 #/
SSINS: 6870 2
Accession No.:
UNITED STATES 791480507 NUCLEAR REGULATORY COMMISSION N
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cp 0FFICE OF INSPECTION AND ENFORCEMENT g ' #
,ui WASHINGTON, D.C.
20555 December 13, 1979 IE Information Notice No. 79-31 USE OF INCORRECT AMPLIFIED RESPONSE SPECTRA (ARS)
Description of Ciretastances:
Recently, the NRC was informed that, during a review of valve weights in conjunction with the as-built review for IE Bulletin 79-14 at North Anna Unit 1, it was discovered that incorrect amplified response spectra (ARS) had been used as input to the analyses of some piping on both units 1 and 2.
The reanalyses are being performed by Stone & Webster (S&W), the Architact Engineer for the Virginia Electric & Power Company's facilities. Similarly, Public Service Company of New Hampshire informed the NRC that the wrong ARS were used for the der,ign of some containment supports at their Seabrook units. The Architect Engineer for these plants is United Engineers & Constructors (UE&C).
The NRC is currently pursuing this issue in detail with S&W and UE&C to determine the extent of the problem and the generic implications for other facilities.
This Information Notice is provided as an early notification of a possible significant matter.
It is expected that recipients will review the informa-tion for possible applicability to their facilities.
Specific action has been requested by IE Bulletin 79-14. This bulletin requires that input to seismic analyses of piping, which includes the use of the correct ARS, be verified against the as-built condition of the plant. No specific actions are requested in response to this Information Notice. If NRC evaluations so indicate, further licensee actions may be requested or required.
If you have any ques-tions regarding this matter, please contact the Director of the appropriate NRC Regional Office.
No written response to this IE Information Notice is required.
Enclosure:
List of IE Inforsation Notices Recently Issued 1727 359 4>*.'4 A. 4%y 6.m us See "D8** 9 **
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IE Information Notice No. 79-31 Enclosure Deccaber 13, 1979 RECENTLY ISSUED IE INFORMATION NOTICES Information Subject Date Issued To Notice No.
Issued 79-30 Reporting of Defects and 12/6/79 All power reactor facilities Noncompliances, 10 CFR holding OLs and cps and Part 21 vendors inspected by LCVIP 79-29 Loss of NonSafety-Related 11/16n9 All power reactor facilities Reactor Coolant System holding OLs or cps Instrumentation During Operation 79-28 Overloading of Structural 11/16n9 All power reactor facilities Elements Due to Pipe Support with an OL or CP Loads 79-27 Steam Generator Tube 11/16n9 All power reactor facilities Ruptures At Two PWR holding OLs and cps Facilities79-12A Attempted Damage To New 11/9n9 All Fuel Facilities, Fuel Asremblies research reactors, and power reactors with an OL or CP 79-26 Breach of Containment 11/5n9 All power reactor facilities Integrity suiaing uts una CFs 79-25 Reactor Trips At Turkey 10/in9 All power facilities with Po'nt Units 3 And 4 an OL or a CP 79-24 Overpressurization Of 10/1n9 All power reactor facilities Containment Of A PWR Plant with a CP After A Main Steam Line Break 79-23 Emergency Diesel Generator 9/26n9 All power reactor Lube Oil Coolers facilities holding OLs and cps 79-22 Qualification of Control 9/14n9 All power reactor Systems facilities with operating licenses and construction permits.
79-21 Transportation and Commercial 9h n 9 All power and research Burial of Radioactive Material reactors with OLs 1727 360
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