ML19242D734
| ML19242D734 | |
| Person / Time | |
|---|---|
| Site: | Hope Creek  |
| Issue date: | 07/03/1979 |
| From: | Martin T Public Service Enterprise Group |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| NUDOCS 7908170186 | |
| Download: ML19242D734 (2) | |
Text
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792 Thomas J. Martin Public Service Electric and Gas Corrmany 80 Park Place Newark, N.J. 07101 201/430-8316 Vice President Eng neering and Construction July 3, 1979 Mr. Boyce H.
Grier, Director Office of Inspection and Enforce =ent U.S.
Nuclear Regulatory Commission Region 1 631 Park Avenue King of Pruccia, Pennsylvania 19406
Dear Mr. Grier:
URC IE BULLETIN UO. 79-02 (REV. 1)
PIPE SUPPORT BASE P LA TE DESIGUS USING CONCRETE EXPAUSION AUCHOR BOLTS NO. 1 AUD 2 UNITS HO PE CREEK GENERATING STATION In reply to IE Bulletin No. 79-02 (Revision No. 1) datea June 21, 1979, we offer the following preliminary response:
1.
Review of the Hope Creek Generating Station design indicates that concrete expansion anchor bolts have been kept to a minimum by prior planning and by the use of embedded steel plates with shear lugs and studs.
2.
To date, only twenty-four (24' expansion anchor bolt designs have been designated for use in Seismic Category I piping systems, however none have been installed pending the completion of the engineering review.
3.
A re-analysis of base plate flexibility 1s being perforned using a computer progra= that employs a concrete beam analogy method.
This computer program was verified against the results of several finite e le me n t analyses.
4.
Our AE advise s that they are reviewing their Quality Control procedures to establish the correct documentation and installation program for expans. ion type anchor bolts.
CR7-265 J
7908170156
Boyce H.
Grier
_2 The above actions will be c omp le te d on or about July 20, 1979, at which time we will advise you of the results.
Very truly yours,
/
/
cc:
U.S.
Nuc le a r Regulatory Cocsission Office of Inspection and Enfo rcement Division of Reactor Construction Inspection Washington.
D.C.
20555 59 F 2 56