ML19274G127
| ML19274G127 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 08/15/1979 |
| From: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Eric Turner HOUSTON LIGHTING & POWER CO. |
| References | |
| NUDOCS 7908290698 | |
| Download: ML19274G127 (1) | |
Text
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o UNITED STATES
' 8j NUCLEAR RECULATORY COMMISSION j
REGION IV G t'y
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611 RYAN PLAZA DRIVE, SUITE 1000 U+9 AR LINGTON, T E X A3 7G012
'\\J August 15, 1979 In Reply Refer To:
RIV Docket Nos. 50-498/ Supplement IE Bulletin No. 79-14 50-499/ Supplement IE Bulletin No. 79-14 Houston 7ighting & Power Company ATIN:
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E. A. Turner, Vice President Power Plant Construction and Technical Services Post Office Box 1700 Eouston, Texas 77001 Gentlemen:
The enclosed supplement to IE Bulletin 79-14 is forwarded to you to provide added guidance on the intent of the IE Bulletin.
If you desire additional information regarding this matter, please contact this office.
Sincerely,
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KarlV.Sey[rt Director
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Enclosures:
1.
Supplement IE Bulletin No. 79-14 2.
List of IE Bulletins Issued in the Last Six Months 2008 907 7 9082 9 0 la98 -
UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C.
20555 Supplement IE Bulletin No. 19-14 Date: August 15, 1979 Page 1 of 2 SEIS.T C A RLYSIS FOR AS-EUILT SAFETY-RELATED PIPING SYSTEMS Descriptica 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 Bulletin 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 accepiance 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 assurance records.
If a nonconformance is found, the licensee is expected in accor?ance 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 a safe shutdown earthquake as definad in the Regulations. This evaluation 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 t'o meet the applicable technical specification action statement and complete the inspections required by It;a 2 and 3 of the Lul must report the results of these in ments for content and schedule as g DUPLICATE DOCUMENT Entire document previously 2008 008 enterea into system unaer:
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