ML20217Q680
| ML20217Q680 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 08/22/1997 |
| From: | ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | |
| Shared Package | |
| ML17312B638 | List: |
| References | |
| NUDOCS 9709030314 | |
| Download: ML20217Q680 (4) | |
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ENCLOSURE 1 CHANGE TO TECHNICAL SPECIFICATION Bases 3/4.6.1.4 l
l 9709030314 970822 DR ADOCK 05000528 PDR
~ T C0ZTQYNMENT SYSTEMS BA$ES 9-3/4.6.114 INTERNAL PRESSURE The limitations ~on containment internal pressure ensure that (1) the differential with respect to the outside atmosphere of 4 psig and (2) during LOCA conditions. containment peak pressure does not exceed the design pressure HCocoSb The maximum @ pressure expected to be obtained from a LOCA event is 49.5 psig.
The limit of 2.5 sig for initial positive containment pressure will
-limit the total pressure to (60 psig) and is consistent with 'psig which is less than the design pressure the safety analyses.
3/4.6.1.5 AIR TEMPERATURE The limitation on ccatainment average air temperature ensures that the overall containment average air tunperature does not exceed the initial tem-perature condition assumed in the safety analysis.
3/4.6.1.6 CONTAINMENT STRUCTURAL INTEGRITY i
This limitation ensures that the structural integrity of the containment will be maintained comparable to the original the facility.
csign standards for the life of will withstand the maximum pressure ofStructural integrity is requ' ed to ensure that the contain psig in the event of a LOCA.
The l-containment design pressure is 60 psig.
The measurement of containment tendon h
lift-off force; 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 assemoly hardware, surrounding cor. crete and the exterior sur-
' faces of the containment are suf ficient t tendon wire or strand samples will also be subjected to tests.- o demonstrate this capability.
The All of the required testing 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 1, 1974.
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, the results of the engineering evaluation, O the corrective actions taken.
PALO. VERDE - UNIT 1_
B 3/4 6-2 AMENOMENT NO. 27 L
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- CONTAINMENT SYSTEMS -
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BASES 3/4.6.1.4 INTERNAL-PRESSURE The limitations on containment internal pressure ensure that (1) the containment structure is prevented from exceecing 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.
(Mraske).
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The maximum @ pressuref expecteil to be obtained from a LOCA event is 49.5 psig.
The limit of-2.5 sig for initial positive containment pressure will limit the total pressure _to psig which is less than the design pressure (60 psig) and is consistent with the safety analyses.
2.
3/4.6.1.5 AIR TEMPERATURE The limitation on containment average air temperature ensures tnat the overall containment average air temperature coes not exceea the initial tem-perature conci_ tion assumea in the safety analysis.
3/4.6.1.6 CONTAINMENT STRUCTURAL INTEGRITY
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'This limitation ensures that the structural integrity of tne containment will be maintained comparaole to the original design stancards for the life of the facility.
Structural integrity is re uired to ensure that the containment will withstand the maximum pressure of psig in the event of a LOCA.
The containment design pressure is 60 psig.
The-measurement of containment tendon lift-off force; the tensile tests of the tendon wires or stranos; 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-required testing 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 1, 1974.
_. _The requirea-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, the results of the engineering evaluation, and the
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corrective actions taken.
i PALO VERDE - UNIT 2 B 3/4 6-2 l
l
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. CONTAINMENT-SYSTEMS
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BASES l
3/4f6.1.4-INTERNAL PRESSURE The limitations on containment internal 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.
hh The maximum @ pressurefexpR ted to be obtained from a LOCA event is 49,5 psig.
The limit of 2,5 psig for initial positive containment pressure will limit the total-pressure to psig which is less than the design pressure (60 psig) and is consistent with the safety analyses, 3/4.6.1.5-AIR TEMPERATURE The 1 imitation 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.
l 3/4.6.1.6 CONTAINMENT STRUCTURAL INTEGRITY This limitation ensures that the structural integrity of the containment will be maintained comparable to the original design standards for the life of the facility.
Structural integrity is required to ensure.that the containment will withstand the maximum pressure of psig in-the event of a LOCA.
The containinent design pressure is 60 psig.
The measurement of containment tendon lift-off force; 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 wine or strand samples will also be subjected to tests.
All of the required testing and visual examinations should be performed ir, 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 1, 1974 The required Special Reports from any engineering evaluation of containment abnormalities shall ir.clude a description of the tendon condition, the condition of the concrete (especially at tendon anchorages), the inspection procedures, the tolerances on cracking, the results of the engineering evaluation, and-the corrective actions taken.
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PALO VERDE - UNIT 3 8 3/4 6-2