ML20211H236
| ML20211H236 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 10/29/1986 |
| From: | PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | |
| Shared Package | |
| ML20211H198 | List: |
| References | |
| NUDOCS 8611050033 | |
| Download: ML20211H236 (3) | |
Text
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LIMITING CONDITIONS FOR OPERATION SURVEILLANCE REQUIREMENTS 3.7.A Primary Containment'(Cont'd.)
4.7.A Primary Containment (Cont'd.)
3.
Pressure Suppression Chamber -
3.
Pressure Suppression Chamber -
Reactor Building Vacuum Breakers Reactor Building Vacuum Breakers
- a. Except as specified in 3.7.A.3.b
.a.
The pressure suppression chamber-below, two pressure suppression reactor building vacuum breakers chamber-reactor building vacuum and associated instrumentation breakers shall.be operable at including setpoint shall be all times when primary contain-checked for proper operation ment integrity is required.
every refueling outage.
1 The setpoint.of the differential i
pressure instrumentation.which i
actuates the pressure. suppression chamber-reactor building vacuum i
breakers shall be 0.5 +/- 0.25 psid.
- b. From and after the date that one of the pressure suppression chamber-reactor building vacuum breakers is made.or-found to be inoperable for any reason, reactor operation is permissible only during the succeeding seven days unless'such vacuum breaker is sooner made oper-able provided that the repair'proce-dure does not violate primary containment integrity.
4.-
Drywell-Pressure Suppression 4.
Drywell-Pressure Suppression i
Chamber Vacuum Breakers Chamber Vacuum Breakers
- a. When primary containment-is
- a. Each drywell-suppression chamber required, all drywell-suppression vacuum breaker shall be chamber vacuum breakers shall exercised through an opening-i be operable and positioned
. closing cycle once a month.
In the fully closed position (except-during testing) except
- b. When-it is determined that l
as specified in 3.7.A.4.b and a vacuum breaker is inoperable l
c below.
for opening at a time j
when operability is required,
- b. Drywell-suppression chamber allotheroperablevacuumbreakerl vacuum breaker (s) may be shall be exercised immediately "not fully seated" as and every 15 days thereafter shown by position indication until the inoperable if testing confirms that the vacuum breaker has been bypass area is less than or returned to normal service.
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equivalent to a one-inch diameter hole.
Testing shall be performed within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />
- c. Once per operating cycle of initial detection of a each vacuum breaker shall "not fully seated" position be visually inspected l
-170-i 8611050033 861029 i
PDR ADOCK 05000277 P
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PBAPS LIMITING CONDITIONS FOR OPERATION SURVEILLANCE REQUIREMENTS 3.7.A Primary Containment (Cont'd) 4.7.A Primary Containment (Cont'd.)
indication and shall be per-to insure proper maintenance formed periodically there-and operation.
after as follows:
(1)
Once every 15 days (only d.
A leak-test of the drywell to if "not fully seated" suppression chamber structure valve (s) are indicated),
shall be conducted at each refueling outage to assure (2)
Within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> following no bypass larger than or vacuum breaker exercising equivalent to a one-inch requirea by 4.7.A.4.a and diameter hole exists between 4.7.A.4.B.
(only if the drywell and suppression "not fully seated" valve (s)
- chamber, are indicated).
c.
Two drywell-suppression chamber
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vacuum breakers may be inoperable for opening.
d.
If specifications 3.7.A.4.a, b,-
or c cannot be met, the situa-tion shall be corrected within l
24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or the unit shall be placed in a cold shutdown condition in an orderly manner.
5.
Oxygen Concentration 5.
Oxygen' Concentration a.
The primary containment atmos-The primary containment oxygen phere shall be reduced to'less concentration.shall be measured than 4% oxygen with nitrogen gas and recorded at least twice during reactor power operation weekly.
with reactor coolant pressure above 100 psig, except as specified in 3.7.A.S.b.
b.
Within the 24-hour period, subsequent to placing the reactor in the RUN mode following a shutdown, the containment atmosphere oxygen concentration shall be reduced to less than 4% by volume and maintained in this condition.
De-inerting may commence 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> prior to a shutdown.
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t CERTIFICATE OF SERVICE 4
I' certify that service of the foregoing Second Amendment was made upon l
the Commonwealth of Pennsylvania, by mailing a copy thereof, via first-class mail, to Thomas R. Gerusky, Director, Bureau of Radiological Protection, P. O.
Box 2063, Harrisburg, PA 17120; all this 29thday of October,1986.
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Etgene'J. Bradley Attorney for Philadelphia Electric Company i
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