ML20058G891

Proposed Tech Specs SR 4.6.1.2.a,permitting Type a Test Presently Required to Be Performed During Fifth Unit 1 Refueling Outage,To Be Extended to Sixth Unit 1 Refueling Outage

ML20058G891
Person / Time
Site:	Limerick
Issue date:	11/30/1993
From:	PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:
Shared Package
ML20058G881	List: ML20058G872 ML20058G891
References
NUDOCS 9312100169
Download: ML20058G891 (2)

Text

. .

~

I ATTACHMENT 2 LIMERICK GENERATING STATION UNIT 1 Docket No. 50-352 License No. NPF-39 TECHNICAL SPECIFICATIONS CHANGE REQUEST No. 93-20-1 AFFECTED PAGE - 3/4 6-3 l

i I

9312100169 931130 PDR ADOCK 05000352 P pon l

- . - . on _ . - - - . - . . - - - _ . _,_

i

'_ CONTAINMENT SYSTEMS LIMITING CONDITION FOR OPERATION (Continued)

ACTION: .(Continued)

b. The combined leakage rate for all penetrations and all valves listed in Table 3.6.3-1, except for main steam line isolation valves

• and  :

valves which are hydrostatically tested per Table 3.6.3-1, subject '

to Type B and C tests to less than or equal to 0.60 La, and

c. The leakage rate to less than or equal to 11.5 scf per hour for any $

one main steam line through the isolation valves, and '

d. The combined leakage rate for all containment isolation valves in-hydrostatically tested lines which penetrate the primary containment to less than or equal to 1 gpm times the total number of such valves, prior to increasing the reactor coolant system temperature above 200 F.

SURVEILLANCE REQUIREMENTS 4.6.1.2 The primary containment leakage rates shall be demonstrated at the following test schedule and shall be determined in conformance with the criteria '

specified in Appendix J of 10 CFR Part 50 using the methods and provisions of ANSI 45.4-1972 and BN-TOP-1 and verifying the result by the Mass Point Methodology described in ANSI N56.8-1981:

a. Three Type A Overall Integrated Containment Leakage Rate tests shall be conducted at 40 +/- 10 month intervals during shutdown at Pa, 44.0 psig, during each 10-year service period. The third test of each set shall be '

conducted during the shutdown for the 10-year plant inservice inspection.** l .

b. If any periodic Type A test fails to meet 0.75 La, the test schedule for subsequent Type A tests shall be reviewed and approved by the Commission. If two consecutive Type A tests fail to meet 0.75 La>

a Type A test shall be performed at least every 18 months until two consecutive Type A tests meet 0.75 La, at which time the above test  ;

schedule may be resumed.

c. The accuracy of each Type A test snall be verified by a supplemental test which:

1. Confirms the accuracy of the test by verifying that the difference between the supplemental data and the Type A test data is within 0.25La. The formula to be used is: [L Lam - 0.25 Lal 6 L ssuperimposed

[Lo + Lam + 0.25 La] Lam - measured Type A le leakage;

2. Has duration sufficient to establish accurately the change in leakage rate between the' Type A test and the supplemental test.

3. Requires the quantity of gas injected into the containment or bled from the containment during the supplemental test to be between 0.75 La and 1.25 La-

• Exemption to Appendix "J" to 10 CFR Part 50.  !

• • The interval between the second and third Overall Integrated Leakage Rate tests of the- -

first 10-year service period will be extended to the sixth Unit I refueling outage. i As a result, the duration of the first 10-year service period will be 2xtended to the end I of the sixth Unit I refueling outage.

LIMERICK - UNIT 1 3/4 6-3