ML20085M890

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Proposed Tech Specs,Consisting of Change Request 95-06, Requesting one-time Schedular Exemption from 10CFR50,App J, Primary Containment Leakage Testing for Water-Cooled Power Reactors
ML20085M890
Person / Time
Site: Limerick  Constellation icon.png
Issue date: 06/20/1995
From:
PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:
Shared Package
ML20085M885 List:
References
NUDOCS 9506290394
Download: ML20085M890 (5)
v • d • e


Text

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I ATTACHMENT 2  !

UMERICK GENERATING STATION  ;

UNITS 1 AND 2 Docket Nos.

50452 t 50-353 License Nos. I NPF-39 i NPF45 TECHNICAL SPECIFICATIONS CHANGE REQUEST ,

NO.95-064 .l

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/ FFECTED PAGES  :

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UNIT 1 UNIT 2 3/46-3 3/46-3 l

3/4 6-14 3/4 6-14 l

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9506290394 950620 PDR ADOCK 05000352 P PDR

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 i valves which are hydrostatically tested per Table 3.6.3-1, subject l to Type B and C tests to less than or equal to 0.60 La, and
c. The leakage rate to less than or equct to 11.5 scf per hour for any l 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 I 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. Type A Overall Integrated Containment Leakage Rate tests shall be conducted at Pa, in accordance with 10CFR50, Appendix J, as modified by approved exemptions.
b. If any periodic Type A test fails, or if two consecutive Type A tests fail, a Type A test shall be performed in accordance with 10CFR50, Appendix J, as modified by approved exemptions.
c. The accuracy of each Type A test shall be verified by a supplemental test which:

/

1. Confirms the accuracy of the test by verifying that the difference i

between the supplemental data and the Type A test data is within 0.25 La. The formula to be used is: [Lo + Lam - 0.25 La 0.25La]whereLc-suplementaltestresu?5Lc t; Lo =

l ssuperimposed

[Lo + Lam + leakage; Lam - measured ype A leakage.

t 1

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

l 3. Requires the quantity of gas injected into the containment or

! bled from the containment during the supplemental test to be l

between 0.75 La and 1.25 La-

I LIMERICK - UNIT 1 3/4 6-3

CONTAINMENT SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

c. .By verifying at least 8 suppressi.on_. pool water temperature indicators in

. at least 8 locations, OPERABLE by performance of a:

1. CHANNEL CHECK at least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
2. CHANNEL FUNCTIONAL TEST at least once per 31 days, and
3. ' CHANNEL CALIBRATION at least once per 24 months, l

.with the temperature alarm setpoint for: )

1. High water temperature:

a) First setpoint s 95*F -

b) Second setpoint s 105'F c) Third setpoint s 110*F l d) Fourth setpoint 5 120 F

d. By verifying at least two suppression chamber water level indicators '

OPERABLE by performance of a:

1. CHANNEL CHECK at least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />,
2. CHANNEL FUNCTIONAL TEST at least once per 92 days, and i
3. CHANNEL CALIBRATION at least once per 24* months, j with the water level alarm setpoint for high water level s 24'l-1/2" l
e. Drywell-to-suppression chamber bypass leak tests shall be conducted to -

coincide with the Type A test (in accordance with 10CFR50, Appendix J, as modified by approved and verifying that theexemptions) lated is A//k calcu (age from the measured withinat an initiallea differential oressure.of 4 ps .

the specified limit. If any drywell-to-suppression chamber bypass leak  !

test fails to meet the specified limit, the test schedule for subsequent  ;

tests shall be reviewed and approved by the Commission. If two consecutive tests fail to meet the specified limit, a test shall be performed at least every 24 months until two consecutive tests meet the specified limit, at which time the test. schedule may be resumed.

f. By conducting a leakage test on the drywell-to-suppression chamber vacuum  !

breakers at a differential pressure of at least 4.0 psi and verifying that ,

the total leakage area A/(k contributed by all vacuum breakers is less than or equal to 24% of the specified limit and the leakage area for an individual set of vacuum breakers is less than or equal to 12% of the specified limit. The vacuum breaker leakage test shall-be conducted during  ;

each refueling outage for which the drywell-to-suppression chamber bypass leak test in Specification 4.6.2.1.e is not conducted. l

' o The CHANNEL CALIBRATION for level transmitters LT-55-1N062B, -1N062F shall be performed at least once per 18 months. ,

f I

LIHERICK - UNIT 1 3/4 6-14

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 t 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 $11.5 scf per hour for any main steam isolation valve that exceeds 100 scf per hour, and restore the combined maximum pathway '

leakage to $200 scf per hour, 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 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. Type A Overall Integrated Containment Leakage Rate tests shall be conducted at Pa, in accordance with 10CFR50, Appendix J, as modified by approved exemptions. ,
b. If any periodic Type A test fails, or if two consecutive Type A tests fail, a Type A test shall be performed in accordance with 10CFR50, Appendix' J, as modified by approved exemptions.
c. The accuracy of each Type A test shall 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 0.25 La. The formula to be used is: [Lo + Laqi -0.25 Lal 5 Lc 5 [Lo + Lam + 0.25 La] where Lc = FUpplemeni,ai test result; Lo =

superimposed leakage; Lam - measured Type a 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 j between 0.75 La and 1.25 La- 1 OExemption to Appendix "J" to 10 CFR Part 50.

LIMERICK UNIT 2 3/4 6-3

l CONTAINMENT

  • SYSTEtili SURVEILLANCE REQUIREMENTS (Continued)

'c . By verifying at least 8 suppression pool water temperature indicators in at least 8 locations, OPERABLE by performance of a:

1. CHANNEL CHECK at least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
2. CHANNEL FUNCTIONAL TEST at least once per 31 days, and
3. CHANNEL CALIBRATION at least once per 24 months, with the temperature alarm setpoint for:
1. High water temperature:

I a) First setpoint s 95'F b) Second setpoint s 105'F c) Third setpoint s 110*F l d) Fourth setpoint s 120*F

d. By verifying at least two suppression chamber water level indicators ,

OPERABLE by performance of a:

1. CHANNEL CHECK at least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />,
2. CHANNEL FUNCTIONAL TEST at least once per 92 days, and
3. CHANNEL CALIBRATION at least once per 24* months,  !

with the water level alarm setpoint for high water level s 24'l-1/2" )

e. Drywell-to-suppression chamber bypass leak tests shall be conducted to I coincide with the Type A test (in accordance with 10CFR50, Appendix J, as modified by approved exemptions) at an initial differential pressure of 4 psi and verifying that the Alk caluculation from the measured leakage is within the specified limit. If any drywell-to-suppression chamber bypass leak test fails to meet the specified limit, the test schedule for subsequent tests shall be reviewed and approved by the Commission. If two consecutive tests fail to meet the specified limit, a test shall be performed at least every 24 months until two consecutive tests meet the specified limit, at which time the test schedule may be resumed.
f. By conducting a leakage test on the drywell-to-suppression chamber vacuum breakers at a differential pressure of at least 4.0 psi and verifying that the total leakage area A/(k contributed by all vacuum breakers is less than or equal to 24% of the specified limit and the leakage area for an individual set of vacuum breakers is less than or equal to 12% of the specified limit. The vacuum breaker leakage test shall be conducted during each refueling outage for which the drywell-to-suppression chamber bypass leak test in Specification 4.6.2.1.e is not conducted.~ l ,
  • The CHANNEL CALIBRATION for level transmitters LT-55-2N062B, -2N062F shall be performed l t

at least once per 18 months. l LIMERICK - UNIT 2 3/4 6-14

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