ML19242C622
| ML19242C622 | |
| Person / Time | |
|---|---|
| Site: | Grand Gulf  |
| Issue date: | 07/18/1979 |
| From: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | Stampley N MISSISSIPPI POWER & LIGHT CO. |
| References | |
| NUDOCS 7908130126 | |
| Download: ML19242C622 (2) | |
Text
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NUCLE AR REGULATORY COMMISSION n
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ATLANT A, CEORGI A 30303 JUL 181979 In Rep.'y Refer To:
RII:JP0 c 50_416,_5_0_-417 Mississippi Power and Light Company Attn:
N. L. Sta=pley Vice President of Preduction P. O. Box 1640 Jackson, Mississippi Sa205 Gentlemen:
IE Bulletin 79-14 is revised to limit the scope of work required.
The changes are indicated on the enclosed replacement page for the bulletin.
If you desire additional information regarding this matter, please contact this office.
Sincerely, 4 James P. O'Reilly Director
Enclosure:
Page 2 of 3 to IE Bulletin Nc. 79-14. Rev. 1
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?908130126
JUL 181979 Mississippi Power and
_2, Light Company cc w/ encl:
C. K. McCoy
.. Plant Manager Post Office Box 756 Port Gibson, Mississip3.i 39150 S
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.luly 18, 1979 Revision 1 Page 2 of 3 Action to be taken by Licensees and Permit Holders:
All power reactor facility licensees and constructicn permit holders are requested to verify, unless verified to an equivalent degree within the last 12 months, that the seismic analysis applies to the actuel configuration of safety-related piping systems. The safety related piping includes Seismic Category I systems as defined by Regulatory Guide 1.29, " Seismic Design Classification" Revision 1, dated August 1, 1973 or as defined in the applicable FSAR.
The action items that follow apply to all safety related piping 2 1/2-inches in diameter and greater and to seismic Category I piping, regardlest of size which was dvnatically analyzed by computer. For older plants, where Seismic Category 1 requirements did not exist at the time of licensing, it must be shown that the actual configuration of safety-related systems, utilizing piping 2 1/2 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 anclyses.
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 of this bulletin.
2.
For portions of systems which are normally accessible *, inspect one system in each set of redundant systems and all nonredundant systems for con-formance to the seismic analysis input information set forth in design documents.
Include in the inspection: pipe run geometry; support and restraint design, locations, function and clearanse (including floor and wall penetration); embedments (excluding those covered in IE Bulletin 79-02); pipe attachments; and valve and valve operator locations and weights (excluding covered in IE Bulletin 79-04).
Within 60 days of the date of this bulletin, submit a description of the results of this inspec-tion.
Where nonconformances are found ubich affect operability of any system, the licensee will expedite completion of the inspection described in Item 3.
E ormally accessible refers to those areas of the plant which can be entered N
during reactor operation:.
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