ML20058C080
| ML20058C080 | |
| Person / Time | |
|---|---|
| Site: | Waterford  |
| Issue date: | 11/16/1993 |
| From: | ENTERGY OPERATIONS, INC. |
| To: | |
| Shared Package | |
| ML20058C055 | List: |
| References | |
| NUDOCS 9312020336 | |
| Download: ML20058C080 (6) | |
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NPF-38-145 ATTACHMENT A 9312O20336 931116 PDR ADOCK 05000382 P
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CONTAlfetENT SYSTEMS SURVEILLANCE REOUIREMENTS (Cont'inued)
Three Type A tests (Overall Integrated Containment Leakage Rate) a.
shall be conducte( at 40 i 10 month intervals ** during shutdown at l
either P 44 psig, or at P, 22 psig, during each 10-year service period., he third test of,each set shall be conducted during the i
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shutdown for the 10-year plant inservice inspection.
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b.
If any periodic Type A test fails to meet either n.75 L the test schedule for subsequent Type A tests shall be or 0.75 L'd reviewed an i
approved by the Commission.
If tue consecutive Type A tests fail to i
meet either 0.75 L,hs until t,wo consecutive Type A tests meet either or 0.75 L, a Type A test shall be performed at least every 18 mont j
0.75 L or 0.75 L, at which time the above test schedule may be resume %
The accuracy of ea.ch Type A test shall be verified by a supplemental c.
tes.) which:
1.
Confirms the accuracy of the test by verifying that the supple-mental test result, L,, minus the sum of the Type A and the superimposed leak, L., are equal to or less than 0.25 L,.
2.
Has a duration sofficient to establish accurately the change in leakage rate between the Type A test and the supplemental test.
P 3.
Requires the quantity of gas injected into the containment or blod from the containment during the sunelemental test to be between 0.75 L, and 1.25 L,.
d.
Type B and C tests shall be conducted with gas at P, 44 psig, at intervals ne greater than 24 months
- except for tests involving:
1.
Air locks, 2.
Purge supply and exhaust isolation valves with resilient material seals.
- Testing for the first cycle of operation shall be done during the first refueling outage.
- A one time extension of the test interval is alloued for the third Type A test of the first 10-year service period, provided that performance of the Type A test occurs prior to unit restart following Refuel 7.
WATERFORD - UNIT 3 3/4 6-3 AMDCMDIT NO. 4, 85
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3/4.6 CONTAlletENT SYSTEMS BASES j
i 3 /4. E.1 PRIMARY CONTAll0EENT 3 /4.6.1.1 CONTAllflENT INTERRITY l
l Primary CONTAlletDIT INTEGRITY ensures Yhat the release of radioactive l
materials from the containment atmosphere will be restricted to those leakage j
paths and associated leak rates assumed in the safety analyses. This i
restriction, in conjunction with the leakage rate limitation, will limit the SITE BOUICARY radiation doses to within the limits of 10 CFR Part 100 during accident conditions.
l 3/4.6.1.2 CONTAllelFMT LEAKAGE l
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j The limitations on containment leakage rates ensure that the total i
4 containment leakage volume will not exceed the value assumed in the safety analyses at4he peak accident pressure, P measured overall integrated leakage rate l As an added conservatism, the s further limited te less than or i
equal to 0.75 L or less than or equal to 0.75 L, as applicable during performance of Ihe periodic tests to account for possible degradation of the 3
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containment leakage barriers between leakage tests.
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The surveillance requirements for measuring leakage rates are consistent with the requirements of Appendix J of 10 CFR part 50.*
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i Secondary containment bypass leakage paths previously. Table 3.5-1, have been incorporated into plant procedure L8tT-005.026.
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3 /4. 6.1. 3 CGITAllSENT Ali UEEE a
l The limitations en closure and leak rate for the containment air locks i
are required to meet the restrictions en CONTAIISENT INTEGRITY and containment j
l 1eak rate. Surveillance testing of the air lock seals provides assurance that i
the overall air lock leakage will not become excessive due to seal damage 1
during the intervals between air lock leakage tests.
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- A one time extension of the test interval is allowed for the third Type A i
test of the first 10-year service period, as required by Serve 111ance l
Requirement 4.6.1.2.a and by Section III.D.(a) of Appendix J to le CFR 1
Pat 50, provided the performance.ef the Type A test eccurs prior to unit j
restart following Itefuel 7.
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WATERFORD - UNIT 3 8 3/4 6-1 AMDOIDIT N0. M,'85 i
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NPF-38-145 l
ATTACHMENT B I
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CONTAINMENT SYSTEMS SURVEILLANCE Requirements (Continued) a.
A 3r+e Type A test _s (Overall Integrated Containment Leakage Rate) shall be conducted at 9 : 10 month "tervals during shutdown r
at either P. 44 psig, or at P. 22 psig, during c;ch 10 year a
t service period. The third test of erh set shall be conducted during th 'huth" for +he 10 year plant "Scr" ice inspection._at intervals no greater than 10 years 1
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b.
If any periodic Type A test fails to meet either 0.75 La or 0.75 L -
t the test schedule for subsequent Type A tests shall be reviewed and approved by the Commission. If two consecutive Type A tests fail to or 0.75 L, a Type A test shall be performed at meet either 0.75 L t
a least every 18 months until two consecutive Type A tests meet either 0.75 La or 0.75 Lt at which time the above test schedule may be -
resumed.
c.
The accuracy of each Type A test shall be verified by a supplemental test which:
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1.
Confirms the accuracy of the test by verifying that the supple-i mental test result, Lc minus the sum of the Type A and the superimposed leak L a are equal to or less than 0.25 La-t 2.
Has a 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 L -
a d.
Type B and C tests shall be conducted with gas at P, 44 psig, at
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a intervals no greater than 24 months
- except for tests involving:
1.
Air locks.
2.
Purge supply and exhaust isolation valves with resilient material seals.
' Testing for the first cycle of operation shall be done during the first refueling outage.
- A c e time :stension of the test "terval 1; al'taed for the third Type A test of 15: +15t-10 year service period, provided that pc-formance of the l
l Type A test occurs prior to unit rest 5rt follexing Refuel 7 The third Type A test i
shall be performed within ten years of the second periodic Type A test or by May 12. 2001. This is an exemption f rom 10 CFR Part 50. Appendix J requirements.
WWATEFJORD - UNIT 3 3/4 6-3 AMENDMENT 85 i
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3/4.6 CONTAINMENT SYSTEMS BASES i
3/4.6.1 PRIKARY CONTAINMENT l
3/4.6.1.1 CONTAINMENT INTEGRITY r
Primary CONTAINMENT INTEGRITY ensures that the release of radioactive materials from the containment atmosphere will be restricted to those leakage paths and associated leak rates assumed in the safety analyses. This t
restriction, in conjunction with the leakage rate limitation, will limit the SITE BOUNDARY radiation doses to within the limits of 10 CFR Part 100 during accident conditions.
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3/4.6.1.2 CONTAINMENT LEAKAGE The limitations on containment leakage rates ensure that the total containment leakage volume will not exceed the value assumed in the safety
[
analyses at the peak accident pressure. P. As an added conservatism, the a
measured overall integrated leakage rate is further limited to less than or equal to 0.75 L or less than or equal to 0.75 Lt, as applicable during l
a performance of the periodic tests to account for possible degradation of the containment leakage barriers between leakage tests.
t The surveillance requirements for measuring leakage rates are consistent with the requirements of Appendix J of 10 CFR Part 50.*
Secondary containment bypass leakage paths previously. Table 3.6-1. have been incorporat7d into plant procedure UNT-005-026.
3/4.6.1.3 CONTAINMENT AIR LOCKS The limitations on closure and leak rate for the containment air locks are required to meet the restrictions on CONTAINMENT INTEGRITY and containment t
leak rate. Surveillance testing of the air lock seals provides assurance that the overall air lock leakage will not become excessive due to seal damage during the intervals between air lock leakage tests.
- A nre 14 c extension e+ the test interval is allowed for the third Type A test-ef the first 10 ;0ar scrvice period, as required by Survei' lance I
Require"^nt '.S.1.2.3 and by Section !!!.D.Ca) Of Appendi" J to 10 CFR Part 50--p"Ovided the-performance of the Type ^ test Occures prior to unit restart +^ lowing efue! 7 The third periodic Type A test shall be performed within ten years from the second periodic Type A test or by May 12. 2001.
This is an exemption to 10 CFR Part 50. Appendix J Requirements _.
l WATERFORD - UNIT 3 B 3/4 6-1 AMENDMENT NO. 85 r
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