ML19256G227
| ML19256G227 | |
| Person / Time | |
|---|---|
| Site: | Atlantic Nuclear Power Plant  |
| Issue date: | 12/13/1979 |
| From: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | Collier A OFFSHORE POWER SYSTEMS (SUBS. OF WESTINGHOUSE ELECTRI |
| References | |
| NUDOCS 7912280450 | |
| Download: ML19256G227 (2) | |
Text
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8{f* ** coq'o UNITED STATES g
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L' REGULATORY COMMISSION a e REGION 11 b[
' si MARIETTA ST N.W., SUITE 3100 o,
o ATLANTA, GEORGIA 30303 DE.C 131979 In Reply Refer To:
Offshore Power Systems Attn:
A. R. Collier, President P. O. Box 8000 Jacksonville, Florida 32211 Gentlemen:
This Information Notice is provided as an early notification of a possible significant matter.
It is expected that recipients will review the information 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,
'is,:,\\*Y-
' James P. O'Rc'lly i.
D rector s
Enclosures:
\\
1.
IE Information Notice No. 79-31 2.
List of IE Information hotices Recently Issued 1648 016 701ac w ygz)
SSINS: 6870 Accession No.:
UNITED STATES 7910250507 NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C.
20555 December 13, 1979 IE Information Notice No. 79-31 USE OF INCORRECT AMPLIFIED RESPONSE SPECTRA (ARS)
Description of Circumstances:
Recently, the NRC was informed that, during a review of valve weights in conjunction yith 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 Architect 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 design 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 tne 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.
e F
i648 017
IE Information Notice No. 79-31 Enclosure December 13, 1979 e
RECENTLY ISSUED IE INFORMATION NOTICES Information Subject Date Issued To Notice No.
Issued 79-31
'Jse of Incorrect Amplified 12/13/79 All power reactor facilities Response Spectra (ARS) holding OLs and cps 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 11/16/79 All power reactor facilities Reactor Coolant System holding OLs or cps Instrumentation During Operation 79-28 Overloading of Structural 11/16/79 All power reactor facilities Elements Due to Pipe Support with an OL or CP Loads 79-27 Steam Generator Tube 11/16/79 All power reactor facilities Ruptures At Two PWR holding OLs and cps Facilities79-12A Attempted Damage To New 11/9/79 All Fuel Facilities, Fuel Assemblies research reactors, and power reactors with an OL or CP 79-26 Breach of Containment 11/5/79 All power reactor facilities Integrity holding OLs and cps 79-25 heactor Tripo Ac Turkey 10/1/79 All power facilities with Point Units 3 And 4 an OL or a CP 79-24 Overpressurization Of 10/1/79 All power reactor facilities Containment Of A PWR Plant with a CP After A Main Steam Line Break 79-23 Emergency Diesel Generator 9/26/79 All power reactor Lube Oil Coolers facilities holding OLs and cps 79 Qualification of Control 9/14/79 All power reactor Systems facilities with operating licenses and construction permits.
79-21 Transportation and Commercial 9/7/79 All power and research Burial of Radioactive Material reactors with OLs
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