ML050900410

Technical Specifications, Allows One-time Extension of Appendix J Type a Integrated Leakage Rate Test Interval

ML050900410
Person / Time
Site:	Pilgrim
Issue date:	03/30/2005
From:	Boska J NRC/NRR/DLPM/LPD1
To:	Kansler M Entergy Nuclear Operations
References
TAC MC2706
Download: ML050900410 (3)

Text

LIMITING CONDITIONS FOR OPERATION SURVEILLANCE REQUIREMENTS 3.7 CONTAINMENT SYSTEMS (Cont) 4.7 CONTAINMENT SYSTEMS (Cont)

A. Primary Containment (Cont) A. Primary Containment (Cont)

Primary Containment Integrity Primary Containment Intearity

2. a. Primary containment integrity 2. a. The primary containment shall be maintained at all integrity shall be times when the reactor is demonstrated by performing critical or when the reactor Primary Containment Leak water temperature Is above Tests in accordance with 212 0 F and fuel is in the 10CFR50 Appendix J, Option reactor vessel except while B and Regulatory Guide performing "open vessel" 1.163 dated September physics test at power levels 1995*, with exemptions as not to exceed 5 Mw(t). approved by the NRC and exceptions as follows:

Primary containment Integrity means that the drywell and 1. The main steam line pressure suppression isolation valves shall be chamber are intact and that tested at a pressure Z23 all of the following conditions psig, and normalized to are satisfied: a value equivalent to Pa.

1. All manual containment 2. Personnel air lock door isolation valves on lines seals shall be tested at connected to the reactor a pressure >10 psig.

coolant system or Results shall be containment which are normalized to a value not required to be open equivalent to Pa during accident conditions 3. Leakage rate acceptance are closed. criteria are:

2. At least one door in each 1. Primary containment airlock is closed and overall leakage rate sealed. acceptance criterion is

3. All blind flanges and <11.0 La. During the manways are closed. first unit startup following testing in

4. All automatic primary accordance with the containment isolation Containment Leakage valves and all Instrument Rate Testing Program, line flow check valves are the leakage rate operable except as acceptance criteria specified in 3.7.A.2.b. are < 0.60 L0 for the Type B and Type C tests and < 0.75 La for the Type A tests.

2. Overall air lock leakage rate is < 0.05 L.awhen tested at

>Pa.

3. Door seals leakage rate Is < 0.01 La when pressurized to > 10 psig.

The definition of Surveillance Frequency is I not applicable to Leak Rate -rests.

Amendment No. 17, 113, 136, 1142, 167, 213 314.7-4 t

LIMITING CONDITIONS FOR OPERATION SURVEILLANCE REQUIREMENTS 3.7 CONTAINMENT SYSTEMS (Cont) 4.7 CONTAINMENT SYSTEMS (Cont)

A. Primary Containment (Cont) A. Primary Containment (Cont)

5. All containment isolation check 4. Combined main steam lines:

valves are operable or at least 46 scfh @ 23 psig.

one containment isolation valve where, in each line having an inoperable valve is secured in Pa = 45 psig the isolated position.** La = 1.0% by weight of the contained air

@ 45 psig for 24 hrs.

4. NEI 94-01-1995. Section 9.2.3: The first Type A test performed after the May 25, 1995 Type A test shall be performed no later than May 25, 2010.

Primary Containment Isolation Valves Primary Containment Isolation Valves

2. b. 1. The primary containment

2. b. In the event any automatic isolation valves surveillance Primary Containment Isolation shall be performed as follows:

Valve becomes inoperable, at least one containment isolation a. At least once per operating valve in each line having an cycle the operable primary inoperable valve shall be containment isolation valves deactivated in the isolated that are power operated and condition. (This requirement may automatically initiated shall be satisfied by deactivating the be tested for simulated inoperable valve in the isolated automatic initiation and condition. Deactivation means to closure times.

electrically or pneumatically b. Test primary containment disarm, or otherwise secure the isolation valves:

valve.)*

1. Verify power operated primary containment isolation valve operability as specified in 3.13.

2. Verify main steam isolation valve operability

• Isolation valves closed to satisfy these requirements may be reopened on an intermittent basis under as specified in 3.13.

ORC approved administrative controls.

• • Check valve 30-CK-432 will be considered operable until reverse flow testing is performed no later than the 1998 maintenance outage.

Amendment No. 113, 136, 119, 160,167,1714,213 314.7-5

3/4.7 CONTAINMENT SYSTEMS (Cont)

A. Primary Containment (Cont) capability of the structure over its service lifetime. Additional margin to maintain the containment in the "as built' condition is achieved by establishing the allowable operational leak rate. The allowable operational leak rate is derived by multiplying the maximum allowable leak rate or the allowable test leak rate by 0.75 thereby providing a 25% margin to allow for leakage deterioration which may occur during

.he period between leak rate tests.

The primary containment leakage rate testing is based on the guidelines In Regulatory Guide 1.163 dated September 1995, NEI 94-01 Revision 0 dated July 25, 1995, and ANSI/ANS 56.8-1994. Specific acceptance criteria for as-found and as-left leakage rates, as well as methods of defining the leakage rates, are contained in the primary containment leakage rate testing program.

The primary containment leak rate test frequency is based on maintaining adequate assurance that the leak rate remains within the specification. The leak rate test frequency is in accordance with 10CFR50 App. J, Option B and Regulatory Guide 1.163 dated September 1995.

Type A, Type B, and Type C tests will be performed using the technical methods and techniques specified in ANSI/ANS 56.8 - 1994, or other alternative testing methods approved by the NRC.

A note is included in Surveillance 4.7.A.2.a stating that the definition of Surveillance Frequency is not applicable. The 25% allowable extension of surveillance intervals is already included in the primary containment leakage rate testing program; therefore, an additional 25% is not allowed.

The penetration and air purge piping leakage test frequency, along with the containment leak rate tests, is adequate to allow detection of leakage trends.

Whenever a bolted double-gasketed penetration is broken and remade, the space between the gaskets Is pressurized to determine that the seals are performing -

properly. It is expected that the majority of the leakage from valves, penetrations and seals would be Into the reactor building. However, it is possible that leakage into other parts of the facility could occur. Such leakage paths that may affect significantly the consequences of accidents are to be minimized. The personnel air lock is tested at 10 pslg, because the inboard door is not designed to shut .inthe opposite direction.

Primary Containment Isolation Valves Double isolation valves are provided on lines penetrating the primary containment and open to the free space of the containment. Closure of one of the valves In each line would be sufficient to maintain the Integrity of the pressure suppression system.

Automatic initiation is required to minimize the potential leakage paths from the containment in the event of a loss of coolant accident.

Revision M Amendment No. 213 133/4.7-4