ML17300A567
| ML17300A567 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 10/02/1986 |
| From: | ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | |
| Shared Package | |
| ML17300A566 | List: |
| References | |
| TAC-63134, NUDOCS 8610100505 | |
| Download: ML17300A567 (13) | |
Text
3/4.6 CONTAINMENT SYSTEMS 3/4. 6.
1 PRIMARY CONTAINMENT CONTAINMENT INTEGRITY LIMITING CONDITION FOR OPERATION 3.6.1.1 Primary CONTAINMENT INTEGRITY shall be maintained.
APPLICABILITY:
NODES 1, 2, 3, and 4.
ACTION:
Without primary CONTAINMENT INTEGRITY, restore CONTAINMENT INTEGRITY within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLO SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
SURVEILLANCE REOUIREMENTS 4.6.1.1 a4 b.
C.
Primary CONTAINMENT INTEGRITY shall be demonstrated:
At least once per 31 days by verifying that all penetrations" not capable of being closed by OPERABLE containment automatic isolation valves and required to be closed during accident conditions are closed by valves, blind flanges, or deactivated automatic valves secured in their positions except as provided in Table 3.6-1 of Specification 3.6.3.
By verifying that each containment air lock is in compliance with the requirements of Specification 3.6. 1.3.
After each closing of each penetration subject to Type 8 testing, except containment air locks, if opened following a Type 8
g9.g
- test, by leak rate testing the seal with gas at P ~ sig an verifying that when the measured leakage rate for these seals is a
added to the leakage rates determined pursuant to Specifica-tion 4.6. 1.2d. for all other Type B and C penetrations, the combined leakage rate is less than or equal to 0.60 L.
a'xc pt valves, blind flanges, and deactivated automatic valves which are located inside the containment and are locked, sealed, or otherwise secured in the closed position.
These penetrations shall be verified closed during each COLO SHUTDOWN except that such verification need not be performed more often than once per 92 days.
8b10i00505 8"000528 PDR ADDCK 05 PDR P
PALO VERDE " UNIT 1 3/4 6-1 g~gTR@LLPD BY USER
V v
WNTRC)212D BY'ISaR CONTAINMENT SYSTEMS CONTAINMENT LEAKAGE
'IMITING CONDITION FOR OPERATION 3.6. 1.2 Containment leakage rates shall be limited to:
a.
An overall integrated leakage rate of:
1.
Less than or equal to L
, 0. 10'y weight of the containment air per 24 amours at P
, 49.2 psig, or.
-we 5 2.
Less than or equal to L
, 0.05K by weight of the containment air per 24 amours at a reduced pressure of P
~ pssg t$
2H.Rh b.
A combined leakage rate of less than or equal to 0.60 L
for all penetrations and valves subject to Type 8 and C tests, Shen pressurized to P
a'PPLICABILITY:
MODES 1, 2, 3, and 4.
ACTION:
With either (a) the measured overall integrated containment leakage rate exceeding 0.75 L
or 0.75 L
as applicable, or (b) with the measured combined leakage rate for all penetr$ tions and valves subject to Types 8 and C tests a
exceeding 0.60 L
, restore the overall integrated leakage rate to less than or equal to 0.75 L
or less than or equal to 0.75 Lt, as applicable, and the combined leakage rate for all penetrations and valves subject to Type 8 and C
tests to less than or equal to 0.60 L prior to increasing the Reactor Coolant System temperature above 210 F.
SURVEILLANCE RE UIREMENTS S
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1 4.6. 1.2 The 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 N45.4 - 1972:
Three Type A tests (Overall Integrated Containment Leakage Rate}
shall be conducted at 40,+
10 month intervals during shutdown at either P ~ psig or at Pt 24-.6. psig during each 10-year service period.
The)third test of each et shall be conducted during the shutdown for (the 10-year plant inservice inspection.
l9.S PA.S PALO VERDE - UNIT 1 3i4 6-2 CC) XmGiLLF~ ~~ Ll~~"
4 4
l
GRTRCi.i.H) BY SSKR CONTAINMENT SYSTEMS SURVEILLANCE REOUIRENENTS (Continued) b.
C.
If any periodic Type A test fails to meet either 0.75 L
or 0.75 L
the test schedule for subsequent Type A tests shall be reviewed an) approved by the Commission.
If two consecutive Type A tests fail to meet either 0.?5 L
or 0.75 Lt, a Type A test shall be performed at least every 18 months until two consecutive Type A tests meet either 0.75 L
or 0.75 Lt at which time the above test schedule may be resumei.
The accuracy of each Type A test shall be verified by a supplemental test which:
Confirms the supp 1 cmental
- result, L
or less t3an accuracy of the Type A test by verifying that the test result L
minus the sum of the Type A test and the super4posed leak rate, L
, is equal to 0.25 L.
2.
Has a duration sufficient to establish accurately the change in leakage rate between the Type A test and the supplemental test.
d.
3.
Requires that the rate at which gas is injected into the contain-ment or bled from the containment during the supplemental test is between 0.75 L
and 1.25 L
'I a
a W&.S Type B and C tests shall be conducted with gas at P
, WM psig, at intervals no greater than 24 months except for tests involving:
e.
l.
Air locks, 2.
Purge supply and exhaust isolation valves with resilient material seals.
I Purge supply and exhaust isolation valves with resilient material seals shall be tested and demonstrated OPERABLE per Specifications 4.6.1.7.3 and 4.6.1.7.4.
f.
Air locks shall be tested and demonstrated OPERABLE per Specification
- 4. 6. 1. 3.
g.
The provisions of Specification 4.0.2 are not applicable.
PALO VEROE - UNIT 1 3/4 6-3 gGgyggLLF.D IB'f USER
CONTAINMENT SYSTEMS CONTAINNENT AIR LOCKS LIMITING CONDITION FOR OPERATION 3.6.1.3 Each 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, ~ psig.
'49+5 APPLICABILITY:
MODES 1, 2, 3, and 4.
ACTION:
a.
Mith one containment air lock door inoperable:
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.
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, or 2.
Be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLO SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
3 ~
The provisions of Specification 3.0.4 are not applicable.
b.
Mith the containment, air lock inoperable, except as the result of an inoperable air lock door, 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 STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
SURVEILLANCE REQUIREMENTS 4.6. 1.3 Each containment air lock shall be demonstrated OPERABLE:
a.
Mithin 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 />, by verifying seal leakage to be less than or. equal to 0.01 L
when determined with the volume between the door seals pressurized to greater than or equal to 14.5 ~ 0.5 psig, for at least 15 minutes, Ev ca-p r ~u.vw,q m4wq+ <~.P~~('m 'Lwopa ra%4~~~ k~c,(>
<ALE KMNvvc2. 4%ma ~k Q chal( W 4 4~c pQ c'wc'o PALO VERDE " UNIT 1 3/4 6-4
QHTRGLLED B'f SSKR CONTAINMENT SYSTEMS.
SURVEILLANCE REQUIREMENTS (Continued) b.
,C.
I" By conducting overall air lock leakage tests at not less than P
a'sig, and verifying the overall air lock leakage rate is within its limit:
1.
At least nnce per 6 months,
and 2.
Prior to establishing CONTAINMENT INTEGRITY when maintenance has been performed on the air lock that could affect the air lock sealing capability. ~
At least once per 6 months by verifying that only one door in each air lock can be opened at a time.
AThe provisions of Specification 4.0.2 are not applicable.
- This constitutes an exemption to Appendix J of 10 CFR Part'50.
PALO VERDE - UNIT 1 1
3l4 6-5
CONTAINMENT SYSTEMS 3/4. 6. 2 DEPRESSURIZATION AND COOLING SYSTEMS CONTAINMENT SPRAY 'SYSTEM LIMITING CONDITION FOR OPERATION 3.6.2. 1 Two independent containment spray systems shall be OPERABLE with each spray system capable of taking suction from the RMT on a containment spray actuation signal and automatically transferring suction to the containment=-
sump on a recirculation actuation signal.
Each spray system flow path from the containment sump shall be via an OPERABLE shutdown cooling heat exchanger.
v APPLICABILITY:
MODES 1, 2, 3, and 4.'
ACTION:
v4:
With one containment spray system inoperable; restore the inoperable spray system to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in at least HOT STANDBY within
'the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />; restore the inoperable spray system to OPERABLE status within the next 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> or be in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
SURVEILLANCE RE UIREMENTS 4.6.2.1 a.
C.
d.
Each containment spray system shall be demonstrated OPERABLE:
At least once per 31 days by verifying that each valve (manual, power-operated, or automatic) in the flow path is positioned to take suction from the RWT on a containment spray actuation (CSAS) test signal.
2,5$
By verifying that each pump davelopa an/indicated differential pressure of greater than or equal to 24 psid at greater than or equal the minimum allowable recirculation flowrate when tested pursuant to Specification 4.0.5.
At least once per 31 days by verifying that the system piping is full of water to the 60 inch level in the containment spray header
(>115 foot level).
At least once per 18 months, during shutdown, by:
1.
Verifying that each automatic valve in the flow path actuates to its correct position on a containment'pray actuation (CSAS) and recirculation actuation (RAS) test signal.
2.
Verifying that upon a recirculation actuation test signal, the containment sump isolation valves open and that a
recirculation mode flow path via an OPERABLE shutdown cooling heat exchanger is established.
""Only when shutdown cooling is not in operation.
PALO VERDE " UNIT 1 3/4 6-15 gOQhAIYRCILLED BY USER
a a
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CONTAINMENT SYSTEMS BASES 3/4.6. 1.4 INTERNAL PRESSURE The limitations on containment interna'1 pressure ensure that (1) the containment structure is prevented from exceeding its design negative pressure differential with respect to the outside atmosphere of 4 psig and (2) the containment peak pressure does not exceed the design pressure of 60 psig during LOCA conditions.
ss.s The maximum peak pressure expected to be obtained from a LOCA event is psig.
The limit of 2.5 psig for initial'ositive containment pressure will limit the total pressure to 4 psig which is less than the design pressure (60 ps,ig) and is consistent 1th the safety analyses.
,s,pg4'4$ itomuq te.s 3/4. 6. 1. 5 AIR TEMPERATURE The limitation on containment average air temperature ensures that the overall containment average air temperature does not, exceed the initial tem-perature condition assumed in the safety analysis.
3/4.6. 1.6 CONTAINMENT STRUCTURAL INTEGRITY This limitation ensures that the structura integrity of the containment will be maintained comparable to the original design standards for the life of the facility.
Structural integrity is requiredeto ensure that the containment will withstand the maximum pressure of 4~"psig in the event of a LOCA.
The containment design pressure is 60 psig.
The measurement of containment tendon lift-offforce; the tensile tests of the tendon wires or strands; the examina-tion and testing of the sheathing filler grease; and the visual examination of tendon anchorage assembly
- hardware, surrounding concrete and the exterior sur-faces of the containment are sufficient to demonstrate this capability.
The tendon wire or strand samples will also be subjected to tests.
All of the req~uired t ting.and visual examinations should be performed in a time frame that permits a comparison of"the results for the same operating history.
The Surveillance Requirements for demonstrating the containment's structural integrity are in compliance with the recommendations of Regulatory Guide 1.35, "Inservice Surveillance of Ungrouted Tendons in Prestressed Concrete Containment Structures,"
Revision 3, 1984, and Regulatory Guide 1.35.1, "Deter-mining Prestressing Forces for Inspection of Prestres'sed Concrete Containments,"
1984.
The required Special Reports from any engineering evaluation of containment abnormalities shall include a description of the tendon condition, the condition of the concrete (especially at tendon anchorages),
the inspection procedures, the.tolerances on cracking~he-results of the engineering evaluation, and the corrective actions taken.
PALO VERDE - UNIT 1 8 3/4 6-2
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