ML18085A999
| ML18085A999 | |
| Person / Time | |
|---|---|
| Site: | Salem  |
| Issue date: | 01/23/1981 |
| From: | Schneider F Public Service Enterprise Group |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| IEB-79-02, IEB-79-2, NUDOCS 8103060471 | |
| Download: ML18085A999 (2) | |
Text
Frederick W. Schneider Vice President Public Service Electric and Gas Company 80 Park Place Newark, N.J. 07101 201 /430-7373 Production Mr. Boyce H. Grier, Director U.S. Nuclear Re.gulatory Commission Off ice Inspection and Enforcement Region 1
- 6 31 Park Avenue January 23, 1981 King of Prussia, Pennsylvania 19406
Dear Mr. Grier:
SUPPLEMENTAL RESPONSE TO NRC IE BULLETIN NO. 79-02, REV. 2 PIPE SUPPORT BASE PLATE DESIGNS USING CONCRETE EXPANSION ANCHOR BOLTS
'SALEM GENERATING STATION UNIT NOS. 1 AND 2 DOCKET NOS. 50-272 AND 50-311 In addition to our initial response dated December 5, 1979 on the subject bulletin, we are submitting the following infor-mation for your review.
In our initial response we indicated that no anchor bolts had been installed on concrete block walls oh either unit.
Further investigation of expansion anchor bolts installed on concrete walls has identified one safety related support on Unit No. 1 and three safety related supports on Unit No. 2.
The supports are installed on the Control Air Systems of each unit.
The support numbers are CTAA-1120 for Unit No. 1 and 2A-CTAA-1033, 2A-CTAG-1034, and 2A-CTAG-1006 for Unit No. 2.
The supports hold two-inch pipe.
The Unit No. 1 support is in-stalled with two one-inch diameter concrete anchor bolts and four one-inch bolts which extend through the block wall.
The Unit No. 2 supports have a guide strap welded to 8"x8"x~" c;:arbon steel plate installed with four half inch concrete anchors.
In both Units the supports are accessible during normal operation.
18 ]. 0 2 0 6 ~! 11-1 Q
Mr. Boyce H. Grier, Director 2 -
January 23, 1981 An investigation of the design and installation of the.supports as part of our IE Bulletin 79-02 testing program, described in our response dated September 24, 1979,
- indicated that the.supports were acceptable for the intended service based on the assumption of 3500 psi concrete.
Reanalysis of the supports utilizing masonry wall design also indicates that the supports are accept-able for the intended service.
Approximately thirty manhours were expended on this supplemental bulletin's review.
If you have any further question, we will be pleased to dis.cuss them with you.
Sincerely, CC NRC Off ice of Inspection and Enforcement Div. of Reactor Operations Inspection Washington, D.C.
20555
- L. J. Norrholm NRC, Hancocks Bridge, NJ