ML20032C225
| ML20032C225 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 11/02/1981 |
| From: | Cross W FLORIDA POWER CORP. |
| To: | Stolz J Office of Nuclear Reactor Regulation |
| References | |
| 3F-1181-02, 3F-1181-2, TAC-46976, NUDOCS 8111090515 | |
| Download: ML20032C225 (2) | |
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Mr. John F. Stolz Operating Reactors Branch No. 4 Division of Operating Reactors U.S. Nuclear Regulatory Commission Washington, DC 20555
SUBJECT:
Crystal River Unit No. 3 Docket No. 50-302 Operating License No. DPR-72 Relief from ASME Pressure Testing Code
Dear Mr. Stolz:
By letter dated September 14, 1981, Florida Power Corporation requested relief from the ASME Code,Section XI regarding system pressure testing following mod-ifications, repairs or replacements.
The request was for generic relief from hydrostatic testing of the main feedwater piping between the steam generators and the first upstream isolation valves. The basis was that hydrostatic test-ing of this section of piping would also require filling the steam generators and main steam line with water up to the main steam stop valves. The main steam lines were not intended to carry water, and the excess weight could over-stress the piping and associated supports.
Other problems with this type of testing include the possibility of introduction of water to the turbine, and supplying adequate makeup water and pressure to account for leakage in relief and isolarion valves.
Subsequent to our letter of September 14, Florida Power Corporation discussed alternative testing with your staff. We have concluded that a combination of magnetic particle testing and radiography of repair welds in this line would provide an acceptable alternative to hydrostatic testing.
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PDR General Office 3201 Tnirty fourm street soum. P O Box 14C42 st Petersburg Flonda 33733 813--866 S151
Page 2 Mr. John F. Stolz U.S. Nuclear Regulatory Commission November 2, 1981 Florida Power Corporation also requests extension of this exemption request to include the main steam lines, from the steam generators to the main steam stop valves. Hydrostatic testing of this section of piping would also be subject to the problems outlined above. Magnetic particle and radiographic examinations will also substitute for hydrostatic testing in this section of piping.
Your concurrence with the above program is requested by November 20, 1981.
Very truly yours, FLORIDA PO'TER CORPORATION W.A. Cross Manager Nuclear Licencing EWF:cmd