B13201, Proposed Tech Specs Re Containment Integrity,Internal Pressure & Air Recirculation Sys to Allow Four Containment Air Recirculation Fan Motor HXs to Be Cleaned or Replaced While at Power

Proposed Tech Specs Re Containment Integrity,Internal Pressure & Air Recirculation Sys to Allow Four Containment Air Recirculation Fan Motor HXs to Be Cleaned or Replaced While at Power

ML20248F933
Person / Time
Site:	Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png
Issue date:	03/31/1989
From:	CONNECTICUT YANKEE ATOMIC POWER CO.
To:
Shared Package
ML20248F931	List: B13201, Proposed Tech Specs Re Containment Integrity,Internal Pressure & Air Recirculation Sys to Allow Four Containment Air Recirculation Fan Motor HXs to Be Cleaned or Replaced While at Power ML20248F927
References
B13201, NUDOCS 8904130262
Download: ML20248F933 (3)

Text

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Qogket No. 50-213 B13201 I Attachment No. 1 ,

Haddam Neck Plant Proposed Revision to Technical Specifications 1 Containment Integrity 1

March 1989

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l 8904130262 890331 j l

l PDR ADOCK 05000213 PDC P I l l

4 i 3.11 CONTAINMENT J

Acolicability: Applies to the operating status of reactor containment.

Ob.iective: To insure containment integrity.

Specification: A. Leakaae l The reactor shall not be critical if the containment leakage exceeds 0.25 weight percent of the contained air per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> when extrapolated to 40 psig in accordance with Surveillance Standard 4.4.

B. Containment Intearitv*

(. (1) Containment integrity shall be maintained i

whenever reactor coolant system is above 300 psig and 200*F. - The shutdown rargin shall be Greater than 2600 pcm when the containment is open.

(2) Containment integrity shall not be violated when the reactor vessel head is removed unless the reactor coolant system is borated to the refuel-ing boron concentration.

(3) Positive reactivity changes shall not be made by rod drive motion or baron dilution whenever the containment integrity is not intact.

C. Internal pressure The reactor shall not be critical if the containment internal pressure exceeds 3 psig, or the internal vacuum exceeds 2.0 psig.

D. Air Recirculation System Three of the four air recirculation units shall be operable whenever the reactor is critical.

• The service water piping (containment boundary) for each CAR fan heat exchanger may be opened for up to 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> at a time to install or remove blank I flanger . During this time compensatory measures will be taken. If contain-ment integrity is not restored within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, be in HOT STANDBY within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. The service water piping for each CAR fan motor heat exchanger may be opened for up to 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> at a time to install or remove piping caps. During this time compensatory measures will be taken. If containment integrity is not restored within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />, be in HOT STANDBY within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. The cumulative time for the service water piping to be open shall not exceed 64 hours7.407407e-4 days <br />0.0178 hours <br />1.058201e-4 weeks <br />2.4352e-5 months <br />. The four CAR fan heat exchangers and the four CAR fan motor heat exchangers may be cleaned / replaced only once during Cycle 15 under this specification.

3-18 . Amendment No. 112

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Containment purge is utilized as a backup means of venting hydrogen from the containment following a loss-of-coolant accident. The containment air particulate monitoring system provides the primary means of purging because it provides adequate purge flow to prevent an explosive mixture buildur while allowing fine control of the release of roNactivity during purges. When necessary to effect repairs to the containment purge or purge bypass isolation valves, a blank flange must be applied to the 42" purge air exhaust penetration inside the reactor containment so that the containment remains leak tight. This renders the purge system inoperable for a finite time. Seven days is considered a reasonable length of time for repair parts to be received, installed and the system retested for leak tightness and returned to service.

The OPERABILITY of the containment isolation valves ensures that the containment atmosphere will be isolated from the outside environment in the event of a release of radioactive material to the containment atmosphere or pressurization of the containment. Containment isolation ensures that the release of radioactive material to the environment will be consistent with the assumptions used in the analyses for a LOCA.  !

The specification to allow containment integrity to be relaxed is necessary to allow cleaning or replacing of the l CAR fan heat exchangers and the CAR fan motor coolers. I This specification is only valid prior to the Cycle 15 Refueling Outage.

References:

(1) FDSA Section 3.6  ;

(2) D. C. Switzer (CYAPCO) letter to A. Schwencer (NRC), dated June 27, 1977, Attachment No. 2.

(3) E J. Mroczka letter to NRC, dtted February 10, 1989.

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3-20a Amendment No. 112

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