ML052440213

Technical Specification Page, Revision to One-Time Extension of Integrated Leak Rate Test Interval

ML052440213
Person / Time
Site:	Vermont Yankee
Issue date:	08/31/2005
From:	NRC/NRR/DLPM
To:
References
TAC MC4662
Download: ML052440213 (1)

Text

VYNPS Report for the period of the report in which any change to the ODCM was made. Each change shall be identified by markings in the margin of the affected pages, clearly indicating the area of the page that was changed, and shall indicate the date (e.g., month/year) the change was implemented.

C. PRIMARY CONTAINMENT LEAKAGE RATE TESTING PROGRAM A program shall be established to implement the leakage rate testing of the primary containment as required by 10 CFR 50.54(o) and 10 CFR 50, Appendix J, Option B as modified by approved exemptions. This program shall be in accordance with the guidelines contained in Regulatory Guide 1.163, entitled "Performance Based Containment Leak-Test Program," dated September 1995, as modified by the following:

• The first Type A test after the April 1995 Type A test shall be performed no later than April 2010. (This is an exception to Section 9.2.3 of NEI 94-01, Rev. 0, "Industry Guideline for Implementing Performance-Based Option of 10CFR50, Appendix J.")

• The leakage contributions from the main steam pathways are excluded from the sum of the leakage rates from Type B and C tests specified in (1)Section III.B of 10CFR50, Appendix J -

Option B; (2) Section 6.4.4 of ANSI/ANS 56.8-1994; and (3)

Section 10.2 of NEI 94-01, Rev. 0.

• The leakage contributions from the main steam pathways are excluded from the overall integrated leakage rate from Type A tests specified in'(1)Section III.A of 10CFR50, Appendix J -

Option B; (2) Section 3.2 of ANSI/ANS 56.8-1994; and (3)

Sections 8.0 and 9.0 of NEI 94-01, Rev. 0.

The peak calculated containment internal pressure for the design basis loss of coolant accident, Pa, is 44 psig.

Leakage rate acceptance criteria are:

1. Primary containment leakage rate acceptance criterion

• 1.0 La.

2. The as-left primary containment integrated leakage rate test (Type A test) acceptance criterion is S 0.75 La.

3. The combined local leakage rate test acceptance criterion for Type B and Type C tests (excluding the leakage contributions from the main steam pathways) is S 0.6 La, calculated on a maximum pathway basis, prior to entering a mode of operation where primary containment integrity is required.

4. The combined local leakage rate test acceptance criterion for Type B and Type C tests (excluding the leakage contributions from the main steam pathways) is S 0.6 La, calculated on a minimum pathway basis, at all times when primary containment integrity is required.

Amendment No. -151r 1 52 , 417r 24 -5,r 2, 227 265