ML20207S734
| ML20207S734 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 03/17/1987 |
| From: | CAROLINA POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML20207S728 | List: |
| References | |
| NUDOCS 8703200224 | |
| Download: ML20207S734 (6) | |
Text
.
(BSEP-1-31)
CONTAINMENT SYSTEMS PRIMARY CONTAINMENT AIR LOCKS LIMITING CONDITION FOR OPERATION 3.6.1.3 The primary containment air lock shall be OPERABLE with:
a.
Both doors closed except when the air lock is being used for normal transit entry and exit through the containment, then at least one air lock door shall be closed, and b.
An overall air lock leakage rate of less than or equal to 0.05 L, at P,,
49 psig.
APPLICABILITY: OPERATIONAL CONDITIONS 1, 2* and 3.
ACTION:
a.
With one primary containment air lock door inoperable:
1.
Maintain at least the OPERABLE air lock door closed and either restore the inoperable air lock door to OPERABLE status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or lock the OPERABLE air lock door closed.
2.
Operation may then continue until performance of the next required overall air lock leakage te'st provided that the OPERABLE air lock door is verified to be locked closed at least once per 31 days.
3.
Otherwise, be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
4.
The provisions of Specification 3.0.4 are not applicable.
b.
With the primary containment air lock door interlock inoperable:
1..
Lock the inner air lock door closed.
2.
Operation may then continue provided that the inner air lock door is verified to be locked closed at least once per 31 days.
L x --,
3.
Otherwise, be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and d~^
in COLD SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
tnur 4.
The provisions of Specification 3.0.4 are not applicable.
' br)c3
-4 0 0..
c.
With the primary containment air lock inoperable, except as a result of an gg
- gO inoperable air lock door or interlock, maintain at least one air lock door o
closed; restore the inoperable air lock to OPERABLE status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD f
SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
04 N
r2.f$
- See Special Test Exception 3.10.1.
i: un.c.
BRUNSWICK - UNIT 1 3/4 6-4 Amendment No.
(BSEP-1-31)
CONTAINMENT SYSTEMS SURVEILLANCE REQUIREMENTS 4.6.1.3 Each primary containment air lock shall be demonstrated OPERABLE:
a.
By verifying the seal leakage rate to be less than or equal to 5 scf per hour when the gap between the door seals is pressurized to 10 psig*:
1.
Within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> following each closing, except when the air lock is being used for multiple entries, then at least once per 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, and 2.
Prior to establishing PRIMARY CONTAINMENT INTEGRITY when the air lock has been used and no maintenance has been performed on the air lock, and 3.
When the air lock seal has been replaced.
b._
By conducting an overall air lock leakage test at P, 49 psig, and by verifying that the overall air lock leakage is with,in its limit:
1.
At least once per six months #, and 2.
Prior to establishing PRIMARY CONTAINMENT INTEGRITY when maintenance (except for seal replacement) has been performed on the air lock that would affect the air lock sealing capability.*
c.-
By verification of air lock interlock OPERABILITY:
1.
Prior to establishing PRIMARY CONTAINMENT INTEGRITY when the air lock has been used, and 2.
Prior to and following a drywell entry when PRIMARY CONTAINMENT INTEGRITY is required, and 3.
Following the performance of maintenance affecting the air lock interlock.
Exemption to Appendix J of 10 CFR 50.
I The provisions of Specification 4.0.2 are not applicable.
BRUNSWICK - UNIT 1 3/4 6-5 Amendment No.
(BSEP-1-31) 3/4.6 CONTAINMENT SYSTEMS BASES 3/4.6.1 PRIMARY CONTAINMENT 3/4.6.1.1 PRIMARY CONTAINMENT INTEGRITY 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 accident analyses. This restriction, in conjunction with the leakage rate limitation, will limit the sice boundary radiation doses tc within the limits of 10 CFR Part 100 during accident conditions.
3/4.6.1.2 PRIMARY CONTAINMENT LEAKAGE The limitations on primary containment leakage rates ensure that the total containment leakage volume will not exceed the value assumed in the accident analyses at the peak accident pressure of 49 psig, P,further limited As an added conservatism, the measured overall integrated leakage rate is to less than or equal to 0.75 L, or 0.75 L, as applicable, during performance of the periodic tests to cecount for possible degradation of the containment leakage barriers between ?sekage tests.
Operating experience with the main steam line isolation valves has indicated that degradation has occasionally occurred in the leak tightness of the valves; therefore, the special requirement for testing these valves.
The surveillance testing for measuring leakage rates is consistent with the requirements of Appendix "J" of 10 CFR Part 50 with the exception of exemptions granted for main steam isolation valve leak testing and testing the airlocks after each opening.
3/4.6.1.3 PRIMARY CONTAINMENT AIR LOCKS The limitations on closure and leak rate for the containment air locks are required to meet the restrictions on PRIMARY CONTAINMENT INTEGRITY and the primary containment leakage rate given in Specifications 3.6.1.1 and 3.6.1.2.
The specification makes allowances for the fact that there may be long periods of time when the air locks will be in a closed and secured position during reactor operation. Only one closed door in each air lock is required to maintain the integrity of the containment.
In the event of an inoperable door interlock, locking shut the inner door will ensure containment integrity while permitting access to the lock for maintenance and surveillance testing.
l l
l BRUNSWICK - UNIT 1 B 3/4 6-1 Amendment No.
I L
(BSEP-2-30)
CONTAINMENT SYSTEMS PRIMARY CONTAINMENT AIR LOCKS LIMITING CONDITION FOR OPERATION
-3.6.1.3 The primary containment air lock shall be OPERABLE with:
a.
Both doors closed except when the air lock is being used for normal transit entry and exit through the containment, then at least one air lock door shall be closed, and b.
An overall air lock leakage rate of less than or equal to 0.05 L, at P,,
49 psig.
APPLICABILITY: OPERATIONAL CONDITIONS 1, 2* and 3.
ACTION:
With one primary containment air lock door inoperable:
a.
1.
Maintain at least the OPERABLE air lock door closed and either restore the inoperable air lock door to OPERABLE status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or lock the OPERABLE air lock door closed.
2.
Operation may then continue until performance of the next required overall air lock leakage test provided that the OPERABLE air lock door is verified to be locked closed at least once per 31 days.
3.
Otherwise, be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
4.
The provisions of Specification 3.0.4 are not applicable.
b.
With the primary containment air lock door interlock inoperable:
1.
Lock the inner air lock door closed.
2.
Operation may then continue provided that the inner air lock door is verified to be locked closed at least once per 31 days.
3.
Otherwise, be in at least HOT SHUTDOWN uithin the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
4.
The provisions of Specification 3.0.4 are not applicable.
With the primary containment air lock inoperable, except as a result of an c.
inoperable air lock door or interlock, maintain at least one air lock door closed; restore the inoperable air lock to OPERABLE status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
- See Special Test Exception 3.10.1.
BRUNSWICK - UNIT 2 3/4 6-4 Amendment No.
(BSEP-2-30)
CONTAINMENT SYSTEMS SURVEILLANCE REQUIREMENTS 4.6.1.3 Each primary containment air lock shall be demonstrated OPERABLE:
By verifying the seal leakage rate to be less than or equal to 5 scf a.
per hour when the gap between the door seals is pressurized to 10 psig*:
1.
Within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> following each closing, except when the air lock is being used for multiple entries, then at lease once per 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, and 2.
Prior to establishing PRIMARY CONTAINMENT INTEGRITY when the air lock has been used and no maintenance has been performed on the air lock, a.:3 3.
When the air lock seat has been replaced.
b.
By conducting an overall air lock leakage that at P, 49 psig, and by verifying that the overall air lock leakage is with,in its limit:
1.
At least once per six months #, and 2.
Prior to establishing PRIMARY CONTAINMENT INTECRITY when maintenance (except for seal replacement) has been performed on the air lock that could affect the air lock sealing capability.*
c.
By verification of air lock interlock OPERABILITY:
1.
Prior to establishing PRIMARY CONTAINMENT INTEGRITY when the air lock has been used, and 2.
Prior to and following a drywell entry when PRIMARY CONTAINMENT INTEGRITY is required, and 3.
Following the performance of maintenance affecting the air lock interlock.
Exemption of Appendix J of 10 CFR 50.
The provisions of Specification 4.0.2 are not applicable BRUNSWICK - UNIT 2 3/4 6-5 Amendment No.
- c. s.
e, (BSEP-2-30) j
.?
'3/4.6 CONTAINMENT SYSTEMS BASES 3/4.6.1 PRIMARY CONTAINMENT l
3/4.6.1.l' PRIMARY CONTAINMENT INTECRITY i
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 accident analyses. This 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.
3/4.6.1.2 FRIMARY CONTAINMENT LEAKAGE The limitations on primary containment leakage rates ensure that the total containment leakage volume will not exceed the value assumed in the accident analyses at the peak accident pressure of 49 psig, P,further limited As an added conservatism, the measured overall integrated leakage rate is to less than or equal to 0.75 L, or 0.75 L, as applicable, during performance of the periodic tests to account for possible degradation of the containment leakage barriers between leakage tests.
Operating experience with the main steam line isolation valves has indicated that degradation has occasionally occurred in the leak tightness of the valves; therefore, the special requirement for testing these valves.
The surveillance testing for measuring leakage rates is consistent with the requirements of Appendix "J" of 10 CFR Part 50 with the exception of exemptions granted for main steam isolation valve leak testing and testing the airlocks after each opening.
3/4.6.1.3' PRIMARY CONTAINMENT AIR LOCKS The limitations on closure and leak rate for the containment air
' locks are required to meet the restrictions on' PRIMARY CONTAINMENT INTEGRITY and the primary containment leakage rate given in Specifications 3.6.1.1 and 3.6.1.2.
The specification makes allowances for the fact that there may be long periods of time when the air locks will be in a closed and secured position during reactor operation. Only one closed door in each air lock is required to maintain the integrity of the containment.
In the event of an inoperable door interlock, locking shut the inner door will ensure containment integrity while permitting access to the lock for maintenance and surveillance testing.
BRUNSWICK - UNIT 2 B 3/4 6-1 Amendment No.