ML20151T392
| ML20151T392 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 08/08/1988 |
| From: | Forney W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Reed C COMMONWEALTH EDISON CO. |
| Shared Package | |
| ML20151T396 | List: |
| References | |
| NUDOCS 8808160346 | |
| Download: ML20151T392 (2) | |
See also: IR 05000454/1988007
Text
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Docket No. 50-454
Docket No. 50-455
Cornronwealth Edison Company
ATTN: Mr. Cordell Reed
Senior Vice President
Post Office Box 767
Chicago, IL 60690
Gentlemen:
Thank you for your letter dated July 5,1988, informing us of the steps you
have taken to correct the violations which we brought to your attention in our
letter dated June 1, 1988 (Report Nos. 454/88007(DRP);455/88007(DRP)). We
will examine the effectiveness of your corrective actions during a future
inspection.
Your letter stated that contrary to violation statement 1.8, safety valves
1/2RYO30A/B do not provide overpressure protection for PORV accumulators
1/2RY32MA/B, but that the accumulators have been desi;'ied for the maximum
overpressure :endition that could occur as the result of a design basis
accident inside containment. Therefore, the need for the safety valves to
protect the accumulators is obviated.
.
The NRC staff has reviewed the supplemental information which you have
provided(DesignSpecificationforPORVAccumulators,DS-IA-01-BB)andSection
III, Article ND-7110 of the ASME Boiler and Pressure Vessel Code (Code),1974
edition, and agrees with your position that the PORV accumulators are designed
in accordance with the overpressure protection requirements of the Code.
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Based on this infomation, we are withdrawing violation 1.B.
With regard to violation 2, it was never the NRC's contention that the piping
upstream of check valves 1RY085A/B and 1RY086A/B had not actually been
depressurized when the check valves were tested, but that the test procedure
.
was inadequately written.
The test procedure did not require that a system
valve lineup be perfomed as a prerequisite, nor were any positive
verifications of the positions of valves 1RYO92A/B made in the body of the test
procedure.
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The fiRC is concerned with the adequacy and completeness of your
post-modification test procedures, not with the ability of your test engineers
to successfully test a component or system.
We will gladly discuss any questions you have concerning this inspection.
Sincerely,
W. L. Forney, Chief,
Reactor Projects Branch 1
Enclosure: Ceco ltr dtd 7/5/88
cc w/o enclosure:
T. Mairan, Vice President,
PWR Operations
H. Bliss, fiuclear Licensing
Manager
R. Pleniewicz, Station Manager
Resident Inspector, RIII Byron
cc w/ enclosure:
DCD/DCB (RIDS)
Licensing Fee Management Branch
Resident Inspector, RIII Braidwood
L. 01shan,f1RR PM
J. McCaffrey, Chief, Public
Utilities Division
H. Taylor, Quality Assurance
Divisien
D. Cassel, Jr. , Esq.
Diane Chavez, DAARE/ SAFE
Richard Hubbard
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