ML19224D293

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Responds to IE Bulletin 79-04.Component Cooling & Essential Svc Water Sys,Reactor Coolant,Auxiliary Feedwater,Feedwater, Compresed Air & Auxiliary Turbines Sys Will Use 3.4 or 6-inch Velan Swing Check Valves
ML19224D293
Person / Time
Site: Sterling
Issue date: 05/18/1979
From: Arthur J
ROCHESTER GAS & ELECTRIC CORP.
To: Grier B
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
RLNRC-0027, RLNRC-27, NUDOCS 7907110302
Download: ML19224D293 (2)


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ROCHESTER GAS AND ELECTRIC CORPCR ATION 69 EAST AVENUE, RCCHESTER, NN. 14649

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May 18, 1979 Mr. Boyce H. Grier, Director Office of Inspection and Enforcement, Region I U.'S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, PA 19406

SUBJECT:

IE Bulletin 79-04 RLNRC-0027 Docket No. 50-485

Dear Mr. Grier:

Your letter dated March 30, 1979 forwarded IE Bulletin 79-04 concerning incorrect weights for swing check valves manufactured by the Velan Engineering Corporation. The following information is provided in response to your letter. The items below are numbered to correspond to the Bulletin action items.

1. The following seismic Category I piping systems will utilize 3, 4, or 6 inch Velan swing check valves:
a. Component Cooling Water System
b. Essential Service Water System
c. Reactor Coolant System
d. Auxiliary Feedwater System
e. Feedwater System
f. Compressed Air System
g. Auxiliary Turbines System
2. The ccrrect valve weights were used in piping analyses. On April 20, 1979, the Velan Engineering Corporation informed the SNUPPS architect engineer, Bechtel, that the weights of all swing check valves as shown on project engineering draw-ings were acceptable. Bechtel reviewed relevant piping stress analyses to verify that weights used were equal to or greater than those shown on the Velan drawings. This. review was com-pleted by May 2, 19/9.

331 E 79071103 ,

ROCHESTER GAS AND ELECTR!C CORP. SHEET Nrb DATE May 18, 1979 To Mr. Boyce H. Grier 2

3. Incorrect valve weights were not used.
4. No modifications are required because the correct valve weights were used.
5. This item is not applicsble because modifications and/or stress reanalysis were not required.
6. This item is applicable to holders of operating licenses only.
7. No outstanding matters in items 1 through 5 above have been identified. Documentation of our actions in regard to this IE Bulletin are available for "RC inspection.

Sincerely ycurs, l 1 E. Arthur ief Engineer xc: C. R. Anderson Lex K. Larson N. A. Petrick Gerald Charnoff J. L. Turdera U.S. Nuclear Regulatory Commission Office of Inspection and Enforcement Diviilion of Reactor Construction Inspection Wastington, DC 20555 33!  ;

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