ML20215G691
| ML20215G691 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 06/18/1987 |
| From: | Gallagher J PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | Butler W Office of Nuclear Reactor Regulation |
| References | |
| GL-87-06, GL-87-6, NUDOCS 8706230354 | |
| Download: ML20215G691 (3) | |
Text
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PHILADELPHIA ELECTRIC COMPANY 2301 M ARKET STREET P.O. BOX 8699 PHILADELPHI A. PA.19101 1215) 841 5001 JOSEPH W, G ALLAGHE R
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June 18, 1987 Docket Nos. 50-277 50-278 Mr. Walter R. Butler, Director Project Directorate I-2 Division of Reactor Projects I/II U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C.
20555
SUBJECT:
Generic Letter 87-06 Periodic Verification of Leak Tight Integrity of Pressure Isolation Valves
Dear Mr. Butler:
The subject Generic Letter required licensees "... to submit a list of all pressure isolation valves (PIV) in your plant.
For each valve, describe the periodic tests or other measures performed to assure the integrity of the valve as an independent barrier at the Reactor Coolant Pressure Boundary (RCPB) along with the acceptance criteria for leakage, if any, operational limits, if any, and frequency of test performances...
If current plant Technical Specifications require leak rate testing for all PIVs in the plant, your reply to that effect will be sufficient."
i Pressure Isolation Valves (PIVs) are defined for each interface as any two valves in series within the reactor coolant pressure boundary which separate the high pressure reactor coolant system from an attached low pressure system.
These valves are normally closed during operation.
9706230354 070618 ADOCK05000{7 PDR go6D tll
Mr. W. R.-Butler June 18, 1987 Page 2
Response
r.
The attached table identifies pressure isolation valves.
The-air operated check valves inside of containment and their associated air operated bypass valves are ASME Section XI leak tested.
Philadelphia Electric Company uses the ASME Section XI acceptance criteria of:
(30) (nominal size of the valve in inches) = acceptable leakage in ml/hr
.This criteria can be doubled in accordance with the ASME code for check valves.
The motor operated PIV's are required by Table 3.7.4 of the Peach Bottom Technical Specifications to be tested in accordance with 10CFR50 Appendix J.
Very truly yours, Attachment cc:
Addressee T. P. Johnson NRC Resident Inspe,ctor W. T. Russell,$dministrator,NRC,RegionI l
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