ML18139A060
| ML18139A060 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 01/30/1980 |
| From: | Spencer W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| IEB-79-02, IEB-79-2, NUDOCS 8003240499 | |
| Download: ML18139A060 (2) | |
Text
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J,\\N 2 9 VIRGINIA ELECTRIC AND POWER COMPANY, RICHMOND, VIRGINIA 23261 80 FEB I All : f :1 Mr. James P. O'Reilly, Director Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303 Dear Mr. 0 1Reilly:
January 30, 19*90 Serial No. 943B/110879 PSE&C/RHW,III:mac:wang Docket Nos. 50-280 50-281 License Nos. DPR-32 DPR-37 SUPPLEMENTAL RESPONSE TO I.E. BULLETIN NO. 79-02, REVISION NO. 2 SURRY POWER STATION UNITS 1 & 2 Item 5 of I.E. Bulletin No. 79-02, Revision No. 2 addresses piping supports in Seismic Category I systems which are attached to conciete block (masonry) walls with expansion anchor bolts.
Our response to the Bulletin dated December 7, 1979, Serial No. 943A/110879, identified five pipe supports as being on block walls and stated that we were continuing our inspection.
We have now completed our inspection of the accessible and inaccessible areas of Surry Units 1 and 2.
A total of 18 Seismic Category I supports attached to masonry walls were identified. All of these supports are -in the Auxiliary Building and are accessible during operation.
The types of anchors installed appear to be shell or sleeve type anchors with bolts or screws used to attach the supports.
The systems, line sizes, numbers of supports, types of anchor bolts, and types of supports involved are summarized below:
Line Size Number of Type of Type of System (in.)
Supports Anchor Support Chemical Volume Control 4
and Containment Vacuum 2
2 Bolts Multiple Line Gaseous Waste 6
1 Bolts Single Line Gaseous Waste 3/4, 2 2
Bolts Multiple Line Containment Vacuum 2
and Aerated Drains 1
1 Screws Multiple Line Safety Injection 1
3 Bolts Single Line Safety Injection 1
3 Bolts Multiple Line Containment Vacuum 2
1 Bolts Multiple Line 3/<v Leakage Monitoring 3
Bolts Single Line Aearated Drains 1
2 Bolts Single Line TOTAL
= 189 800§ 24ft ~99
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.J *;I This summary supersedes the list transmitted to you as Attachment 1 to our previous letter of December 7, 1979.
In lieu of providing the detailed evaluation required by the Bulletin, we are designing modifications to-remove these supports from the concrete block walls.
We expect to have these mo~ifications designed and installed by the end of February, 1980.
If you should have any questions, please contact us.
Very truly yours,
,%4<-CL~
W. C0pencer Vice President - Power Station Engineering and Construction Services cc: Mr. Victor Stello, Director Office of Inspection & Enforcement Mr. Harold E. Denton, Director Office of Nuclear Reactor Regulation