ML19210E660

Requests Approval for Use of ASME Code Case N-240 to Exempt Certain Piping from Hydrostatic Testing

ML19210E660
Person / Time
Site:	Clinton
Issue date:	11/30/1979
From:	Wuller G ILLINOIS POWER CO.
To:	Stolz J Office of Nuclear Reactor Regulation
References
U-0112, U-112, NUDOCS 7912050483
Download: ML19210E660 (2)

Text

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} L20-79(11-30)-9 500 SOUTH 27TH STREET. DEC 4TUR, ILLINOIS 62525 November 30, 1979 Mr. John F. Stolz, Chief Light Water Reactors Branch No. 1 Division of Proj ect Management Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C. 20555

Dear Mr. Stolz:

Clinton Power Station Units 1 & 2 Docket Nos. 50-461 and 50-462 Construction Permits No. CPPR-137 & CPPR-138 Illinois Power Company intends to make use of ASME Code Case N-240, approved March 19, 1979, to exempt certain piping suuject to the requirements of the ASME Code from hydrostatic testing. ,

We kindly request NRC approval for use of ASME Code Case N-240 at the Clinton Power Station for the following intended application:

1) Shutdown service water discharge to the ultimate heat sink beyond the last isolation valve.

2) Various diffusers, drains, and return piping to the several fuel pools in the containment and fuel buildings. l

3) Suppression pool makeup system piping connecting upper containment pool with suppression pool.  ;

4) Diesel oil system pump suction piping from and return ,

piping to the diesel generator fuel oil storage tanks  !

and the fuel oil day tanks.

5) Standby liquid control system pump suction piping from storage tank to first isolation valves.

6) Pump suction and return piping to the RCIC storage tank.

7) HPCS, LPCS, RHR, RCIC, and suppression pool cleanup pump suction piping from suppression pool to first isolation  ;

valve outside containment and return lines to the suppres-sion pool.

1494 237 A

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Mr. John F. Stolz November 30, 1979 Code Case N-240 was reviewed and accepted without comment by the NRC representatives to the ASME Council (Messrs. R. J.

Bosnak and G. A. Arlotto). Furthermore, we are aware that NRC deemed it acceptable for Commonwealth Edison Company to use ASME Code Case N-240 at the LaSalle County Station.

Please advise us as soon as possible if you have any questions on our request to use this code case or its intended applications.

We would certainly appreciate an early NRC approval of this code case for the Clinton Power Station.

Sincerely,

.- , l' G. E. Wuller i Supervisor - Licensing i Generation Engineering Department l GEW/jh 1494 238 '

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