ML20064G010

Proposed Tech Spec Re Leakage Testing of Containment Purge Supply & Exhaust Valves

ML20064G010
Person / Time
Site:	Point Beach
Issue date:	10/24/1982
From:	WISCONSIN ELECTRIC POWER CO.
To:
Shared Package
ML20064F999	List: ML20064F991 ML20064G010
References
TAC-49033, TAC-49034, NUDOCS 8301110265
Download: ML20064G010 (1)

Text

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• I.i containment. A Residual Heat Removal System leakage of 2 gal /hr will limit off-site exposures due to leakage to insignificant levels relative to those calculated for leakage directly from the containment in the Design Basis -

Accident. The dose calculated as a result of this leakage is 7.7 nr for a 2 hour2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> exposure at the site boundary.( }

Periodic visual inspection is the method to be used to determine loss of load-carrying capability because of wire breakage. The pre-stress lift-off test provides a direct measure of the load-carrying capability of the tendon. A deterioration of the corrosion preventive properties of the sheathing filler will be indicated by a change in the physical appearance of the filler. If the surveillance program indicated, by extensive wire breakage or tendon stress relation, that the pre-stressing tendons are not behaving as expected, the situation will be evaluated immediately. The specified acceptance criteria are such as to alert attention to the situation well before the tendon load-carrying capability would deteriorate to a, point that failure during a design basis accident might be possible. Thus, the cause of the incipient deterioration could be evaluated and corrective action studied without need to shut'down the reactor.

The purpose of the leakage tests of the isolation valves in the containment purge supply and exhaust lines is to identify excessive degradation of the resilient seals for these valves. With the exception of the test frequency and acceptance criteria, leakage tests of the containment purge supply and exhaust valves shall be conducted in accordance with 15.4.4.II

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References (1) FSAR Section 5.1.2.3 '

(2) FSAR Section 5.1.2 (3) FSAR Section 14.3.5 (4) FSAR Section 14.3.4 (5) FSAR Section 6.2.3 l

l Unit 1 Amendment 64 15.4.4-15 October 24, 1982 i Unit 2 Amendment 69 l

I 8301110265 830104 DRADOCK05000g

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