ML19259C169
| ML19259C169 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 04/30/1979 |
| From: | Counsil W NORTHEAST UTILITIES |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| NUDOCS 7906140222 | |
| Download: ML19259C169 (1) | |
Text
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April 30, 1979 Docket flo. 50-245 Mr. Boyce H. Grier Director, Region I Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission King of Prussia, PA 19406 RE:
IE Bulletin No. 79-04, " Incorrect Weights For Swing Check Valves Manufactured by Velan Engineering Corporation", dated liarch 30, 1979, and received April 16, 1979.
Gentlemen:
This is in response to the actions requested by the above referenced IE Bulletin No. 79-04.
The individual responses which follow are numbered to correspond to the action statements in the bulletin.
1.
The Seismic Category I piping systems utilizing 3, 4, or 6 inch diameter Velan swing check valves are:
Valve #
Description System 301-95 3" CRD Return line 1500#
Control Rod Drive 301-98 301-138 2.
A review by Velan and the documented results furnished to the NSSS indicates that no drawing discrepancies regarding valve weights ever existed for Millstone Unit #1. As an example, valve 301-138, a 3 inch 1500# valve, required a recommended weight of 100 pounds.
The weight used was 350 pounds.
3.
Not applicable.
4.
Not applicable.
7 5.
Not applicable.
Very truly yours, NORTHEAST NUCLEAR ENERGY COMP NY l$$
s W. G. Counsil Vice President 7906140#42Qq c