ML20062L827
| ML20062L827 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 06/29/1981 |
| From: | Bauer E, Bradley E, Daltroff S PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | |
| Shared Package | |
| ML20008G101 | List: |
| References | |
| NUDOCS 8107020247 | |
| Download: ML20062L827 (6) | |
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BEFORE THE UNITED STATES NUCLEAR REGULATORY COMMISSION In the Matter of Docket Nos. 50-277 PHILADELPHIA ELECTRIC COMPANY 50-278 APPLICATION FOR AMENDMENT OF i
FACILITY OPERATING LICENSES DPR-44 & DPR-56 Edward G. Bauer, Jr.
Eugene J. Bradley 2301 Market Street Philadelphia, Pennsylvania 19101 Attorneys for Philadelphia Electric Company i
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BEFORE THE UNITED STATES NUCLEAR REGULATORY COMMISSION In the Matter of Docket Nos. 50-277 PHILADELPHIA ELECTRIC COMPANY 50-278 APPLICATION FOR AMENDMENT OF FACILITY OPERATING LICENSES DPR-44 & DPR-56 Philadelphia Electric Company, Licensee under Facility Operating Licenses DPR-44 and DPR-56 for Peach Bottom Units 2 and 3, hereby requests that the Technical Specifications contained in Appendix A of the Operating Licenses be amended by revising certain sections as indicated by a vertical bar in the marc.in of attached pages 61 and 63, and by adding page 93a.
High mai,n steam flow instrumentation and high main steam line tunnel exhaust duct temperature instrumentation are provided to detect a breach in the main steam line.
Trips are provided by these instrumentation systems to initiate isolation of the main steam system which in turn results in a reactor
c scram.
This amendment application involves the Technical Specification requirement that the main steam line tunnel exhaust high temperature instrumentation be set to trip at 200 degrees.F.
Upon loss of the reactor building ventilation system, radiant heating in the vicinity of the main steam lines raises the ambient temperature'above 200 degrees F.
Restoration of the main steam line tunnel ventilation flow momentarily exposes the temperature sensors to high temperature air.
Experience has shown that this momentary temperature increase could cause an unnecessary main steam line isolation and reactor scram.
Licensee is proposing that the Technical Specifications be revised to permit an increase in the main steam line tunnel exhaust temperature trip setpoint to 250 degrees F for a period of up to 30 minutes to accommodate a startup of the reactor building ventilation system, thus avoiding an unnecessary. plant transient.
While the response time for sensing a steam leak would be increased during the temporary setpoint adjustment, the main steam line tunnel exhaust temperature detection system would retain its function of providing a trip for a 1 to 10% steam leak s
(original design criteria).
Justification for this amendment application is based on the safety benefits of minimizing pressure and temperature transients of plant systems, the low probability of a steam line leak during the temporary change in setpoint, and the ability of the temperature trip at the higher setpoint of 250 degrees F to limit the reactor coolant release to levels less than the release for the design basis steam line break..
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Since the proposed changes to the Technical Specifications involve a single safety issue and do not involve a significant hazards consideration, pursuant to 10 CFR 170.22, Philadelphia Electric Company, for fee purposes, proposes that the Application for Amendment be considered a Class III Amendment for Unit 2 and a Class I Amendment for Unit 3.
The Plant Operation Review Committee and the Operation and Safety Review Committee have reviewed these proposed changes to the Technical Specifications, and have concluded that they do not involve an unreviewed safety question or a significant hazard consideration; and will not endanger the health and safety of the public.
Respectfully submitted, PHILADELPHIA ELECTRIC COMPANY
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M' 'l'll < M 7[
By Vice Presid,ent l..
COMMONWEALTH OF PENNSYLVANIA ss.
COUNTY OF PHILADELPHIA S. L. Daltroff, being first duly sworn, deposes and'says:
-That he is Vice President of Philadelphia Electric Company, the Applicant herein; that he has read the foregoing Application for Amendment of Facility Operating Licenses and i
knows the contents thereof; and that the statements and matters
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i set forth therein are true and correct to the best of his knowledge, information and belief.
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Subscribed and sworn to before me this M $
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If - 'ry Pub 1i c iH H. BOYEFj i
Not ry Pubh. Phita., PMa.(C.
My Co issio Expires Jan.341982 n
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I CERTIFICATE OF SERVICE I certify that service of the foregoing Application was made upon the Board of Supervisors, Peach Bottom Township, York County, Pennsylvania, by mailing a copy thereof, via first-class mail, to Albert R. Steele, Chairman of the Board of Supervisors, R.
D. No.
1, Delta, Pennsylvania 17314; upon the Board of Supervisors,-Fulton Township, Lancaster County, Pennsylvania, by mailing a copy thereof, via first-class mail, to George K.
Brinton, Chairman of the Boar'd of Supervisors, Peach-Bottom, Pennsylvania 17563; and upon the Board of Supervisors, Otumore Township, Lancaster County, Pennsylvania, by mailing a copy thereof, via first-class mail, to Wilmer P. Bolton, Chairman of the Board of Supervisors, R. D. No.
1, Holtwood, Pennsylvania 17532; all this 29th dhy of
- June, 1981.
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Edgene J.
Bradley Attorney for Philadelphia Electric Company i
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