ML19242A492
| ML19242A492 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 07/19/1979 |
| From: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Mattimoe J SACRAMENTO MUNICIPAL UTILITY DISTRICT |
| References | |
| NUDOCS 7908020410 | |
| Download: ML19242A492 (1) | |
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SUITE 202. WA LNUT CR EE K PLAZA WALNUT CREEK, CALIFORNI A 94556 July 19,1979 Docket ?lo. 50-312 Sacramento Municipal Utility District P. O. Box 15830 Sacramento, California 35313 Attention: Mr. John J. Mattimce Assistant General Manager Gentlemen:
Attached is a corrected ccpy of Revision 1 to IE Bulletin No. 79-14 mailed to you on July 18, 1979. A sentence was inadvertently omitted from the previous copy.
Sincerely,
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R. H. Engelken Director
Enclosure:
IE Bulletia No. 79-14, Pevision 1 - Corrected C:py cc w/ enclosure:
R. J. Rodriguez, SMUD L. G. Schwieger, SMUD 4 1c3 0 9 geB
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IE Bulletin No. 79-14 July 18, 1979 Revision 1 Page 2 of 3 Action to be taken by Licensees and Permit Holders:
All power reactor facility licensees and construction permit holders are requested to verify, unless verified to an equivalent degree within the last 12 months, that the seismic analysis applies to the actual configura-tion of safety-related piping systems. The safety related piping includes Seismic Category I systems as defined by Regulatcry Guide 1.29, " Seismic Design Classification" Revision 1, dated August 1,1973 or as defined in the applicable FSAR.
The action items that follow acoly to all safety related pioing 21/2-inches in ciameter and creater and to seismic Catecory I cioing, regardless of size wnica was dynamically analyzed by camouter. For older piants, where Seismic Category I requirements did not exit t at the time of licensing, it must be shown that the actual configuraticn of #h34 safety-related systems, utilizing cioing 21/2 inches in diameter and greater, meets design requirements.
Specifically, each licensee is requested to:
1.
Identify inspection elements to be used in verifying that the seismic analysis input information conforms to the actual configuration of safety-related systems.
For each safety-related system, submit a list of design documents, including title, identification number, revision, and date, which were sources of input information for the seismic analyses. Also submit a description of the seismic analysis input information which is contained in each document.
Identify systems or portions of systems which are planned to be inspected during each sequential inspection identified in Items 2 and 3. Submit all of this information within 30 days of the date o.' this bulletin.
2.
For portions of systeiu which are cornally accessible *, inspect one system in each set of redundant systems and all nonredundant systems for con-formance to the seismic analysis input infcrmation set forth in design documents.
Include in the inspection: pipe run geccetry; support and restraint design, loca:icns, function and clearance (including ficar anc wall penetration); embedments (excludir.g these covered in IE Bulletin 79-02); pipe at:2chements; and valve and valve cperator iccaticas and weights (excluding those covered in IE Eulletin 79-04).
Witnin 60 days of the date of this bulletin, submit a descripticn of the results of this inspection. Where ncnccnicemances are found which affect operability of any system, the licensee will expedite ccmpletion of the inspection described in Item 3.
%ormally accessible refers to those areas of the piant which can be entered during rer.Li operaticn.
C0RRECTED C0PY 7 907250430 17
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