ML19249B922
| ML19249B922 | |
| Person / Time | |
|---|---|
| Site: | Catawba, Perkins, Cherokee  |
| Issue date: | 08/15/1979 |
| From: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | Dail L DUKE POWER CO. |
| References | |
| NUDOCS 7909070083 | |
| Download: ML19249B922 (2) | |
Text
'T / C fa accoq'c UNITED STATES NUCLEAR REGULATORY COMMISSION
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REGION 11 i
101 M ARIETT A ST., N W., SUITE 3100 5
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ATLANT A, GEORGIA 30303 6,
AUG 151979 In Reply Refer To:
RII:JPO
_50-413, 50-414 C50-488,30-*6 50-490, 50-49
~50-492, 50-493 Duke Power Company Attn:
L. C. Dail, Vice President Design Engineering P. O. Box 33189 Charlotte, North Carolina 28242 Gentlemen:
to Bulletin 79-14 is forwarded to you to provide The enclosed supplement If you desire sdditional added guidance on the intent of the Bulletin.
information regarding this matter, please contact this office.
Sincerely,
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{ James P. O'Reilly Director
Enclosures:
1.
Supplement IE Bulletin No. 79-14 2.
List of IE Bulletins Issued in Last Six Months
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. Duke Power Company cc w/coc1:
D. G. Beam, Project Manager Post Office Box 223 29710 Clover, South Carolina Manager J. 7. Moore, Project office Box l.22 29 3Mi Post Gaffney, South Carolina 0
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6820 Accession No:
7908080360 UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND EhTORCEMEhT WASHINGTON, D.C.
20555 August 15, 1979 Supplement IE Bulletin No. 79-14 SEISMIC ANALYSIS FOR AS-BUILT SAFETY-RELATED PIPING SYSTEMS Description of Circumstances:
IE Bulletin No. 79-14 was issued on July 2, 1979 and revised on July 18, 1979.
The bulletin requested licensees to take certain actions to verify that seismic analyses are applicable to as-built plants. This supplement to the bu11et2n provides additional guidance and definition of Action Items 2, 3, and 4.
To comply with the requests in IE Bulletin 79-14, it will be necessary for licensees to do the following:
2.
Inspect Part of the Accessible Piping For each system selected by the licensee in accordance with Item 2 of the Bulletin, the licensee is expected to verify by physical inspection, to the extent practicable, that the inspection elements meet the acceptance criteria.
In performing these inspections, the licensee is expected to use measuring techniques of sufficient accuracy to demonstrate that acceptance criteria are met. Where inspection elements important to the seismic analysis cannot be viewed because of thermal insulation or location of the piping, the licensee is expected to remove thermal insulation or provide access. Where physical inspection is not practicable, e.g., for valve weights and materials of construction, the license is expected to verify conformance by inspection of quality If a nonconformance is found, the licensee is expected assurance records.
in accordance with Item 4 of the Bulletin to perform an evaluation of the significance of the nonconformance as rapidly as possible to determine whether or not the operability of the system might be jeopardized during This evaluation a safe shutdown earthquake as defined in the Regulations.
is expected to be done in two phases involving an initial engineering judgement (within 2 days), followed by an analytical engineering evaluation (within 30 days). Where either phase of the evaluation shows that system operability is in jeopardy, the licensee is expected to meet the applicable technical specification action statement and complete the inspections The licensee required by Item 2 and 3 of the Fulletin as soon as possible.
must report the results of thes p e m e e - m y m 4{;
ments for content and schedule 1 DUPLICATE DOCUMEN*
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3.
Inspect Remaining Piping Entire document previously entered b
s; into system under:
l Thelicenseeisexpectedtoinh safety-related piping systems ANO Ff0fC$O3f C J
g reporttheresultsinaccordan(?
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schedule as given in Item 3 of s
No. of pages:
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