ML19319D931

Proposed Tech Specs 4.4 Re Surveillance Stds for Local Leakage Rate Measurements Before & After Repair

ML19319D931
Person / Time
Site:	Rancho Seco
Issue date:	10/05/1976
From:	SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:
Shared Package
ML19319D923	List: ML19319D922 ML19319D931
References
NUDOCS 8003270606
Download: ML19319D931 (2)

Text

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-RANCHO SECO UNIT l--

TECHNICAL SPECIFICATIONS' Surveillance Standards provided'. local leakage rate measurements are made' before and af ter repair to demonstrate that' the-leakage rate reduction achieved by repairs reduces the overall measured integrated leak rate to an acceptable value.

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4.4.1.1.7 Report.of Test Results

' Each integrated leak rate test will be the subject of a summary technical report which will include a description of test methods used and_'a summary of local leak detection tests.

Sufficient data and analysis shall be included to show that a stabilized leak rate-was: attained and to identify-all significant required correction

-factors such as those associated with humidity and barometric pressure, and all significant errors such as those associated with instrumentation sensitivities and data scatter.

4.4.1.2

-Local Leakage Rate Tests 4.4.1.2.1 Scope of Testing The local Icak rate shall be measured for each of the following components:

(1)

Personnel hatch (2)

Faergency hatch (3).

Equipment hatch seals (4)

Fuel transfer tube seals I

i (5)

Fuel transfer tube shroud bellows (6)

Reactor Building normal sump drain line I

(7)

Reactor coolant pump seal water outlet line (8)

Reactor coolant pump seal inlet line (9)

Reactor Building equalizing line

.(10)

Decay Heat renoval inlet lines (11)

Reactor Building spray inlet lines (12)

High pressure injection lines

.(13)-

Electrical penetrations

.(14)

Reactor Building purge inlet line (15)

Reactor Building purge outlet line (16)

_ Reactor Building atmosphere sample lines

-(17)

' Letdown to purification domineralizer line l;

(18)

Pressurizer relief. tank gas ~ sample line.

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(19).

Reactor coolant system vent header 0

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.~q RANCHO SECO UNIT-I TECHNICAL SPECIFICATIONS Surveillance Standards (20)

Pressurizer l relief-tank nitrogen supply line 3

-(21).Pressur_izer sample 1ine.

_ (22) ~ ~ Reactor coolant drain tank header -

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4.4.1.2.2 Conduct'of Tests

.With the exception of_the' personnel and emergency hatches' (a)-

_ door seals, all local leak-rate tests shall be performed at a pressure of not less than 52 psig.

See paragraph 4.4.1.2.5b for personnel and emergency hatch door seal test pressure.

(b)

Acceptable methods of testing are halogen gas detection, soap bubbles, pressure decay, hydrostatic flow or equivalent.

.4.4.1.2.3 Acceptance Criteria

'Tne total leakage from all~ penetrations and isolation valves shall not exceed.0.06 percent of the Reactor Building atmosphere per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

'4.4.1.2.4 Corrective Action and Retest (a).

If at any time it is determined that the criterion of 4.4.1.2.3 above is exceeded, repairs shall be initiated

.mmediately.

(b)

If conformance to the criterion-of 4.4.1.2.3 is not demon-strated within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> following detection of excessive local leakage, the reactor shall be shut down and depres-surized until repairs are effected and the local leakage meets the acceptance criterion as demonstrated by retest.

4.4.1.2.5 Test Frequency Local leak detection tests shall be performed within'the following schedule:

-(a)

.The personnel and emergency hatches shall be tested between the inner and outer doors at a pressure not less than'52 psig.. semi-annually.

(b)~

The personnel and emergency-hatches' inner and outer-door 0-ring seals, the equipment hatch and the transfer 39 tube-seals shall be tested within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> after each opening'when containment ~ integrity 's required in

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Specification 3.6.1.

If the hatches or transfer tube are opened at any other time, a local leak rate test shall be performed on the system prior to criticality.

Test pressure for_the personnel and emergency hatches 0-ring seals shall'bez l0 psig. All other local tests shall be at.:52 psig, Proposed Amendment No.~39 g