ML17335A265
| ML17335A265 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 10/08/1998 |
| From: | INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG |
| To: | |
| Shared Package | |
| ML17335A264 | List: |
| References | |
| NUDOCS 9810130330 | |
| Download: ML17335A265 (9) | |
Text
ATTACHMENT 2 TO AEP:NRC:1317 CURRENT PAGES MARKED-UP TO SHOW PROPOSED TECHNICAL SPECIFICATION AMENDMENT CONTAINMENT SYSTEMS BASES 3/4.6.1.4 INTERNAL PRESSURE and 3/4.6.1.5 AIR TEMPERATURE 9810130330 98i008 PDR 'DQCK 050003i5 P
3/4 BASES
'/4.$
CONTAINMENTSYSTEMS 3/4.6.1.4 INTERNALPRESSURE The limitations on containment internal prcssure ensure that I) the containment structure is prevented from exceeding its design negative pressure differential with respect to the outside atmosphere of 8 psig and 2) the containment peak pressure does not exceed the design pressure of 12 psig during LOCA conditions.
The aximum peak sure resultin om a LOCA event~calculated to be I.49 psig, which i ludes 0.3 p f
initial positiv containment pr ure.
3/4.6.1.5 AIR TEMPERATURE Thc limitations on containment average air temperature ensure that I) the containment air mass is limited to an initial mass sufficiently low to prevent excccding the design. pressure during LOCAconditions and 2) the-ambient air temperature does not exceed that temperature allowable for the continuous duty rating specified for equipment and instrumentation located within containment.
The containment pressure transient is sensitive to thc initiall contained air mass during a LOCA. The contained air mass increases with decreasin tern erature.
The lowe tempera re limitof QPF will.li the eak ressure to I 9psig w 's less th econtai ntdcsi n essurco 2
si
. Theupper temperature limitinfluences the peak accident temperature slightly during a LOCA; however, this limit is based primarily upon equipment protection and anticipated operating conditions. Both the upper and lower temperature limits are consistent with the parameters used in the accident analyses.
3/4.6.1.6 CONTAINMENTVESSEL STRUCTURAL INTEGRITY This limitation ensures that the structural integrity of the containment steel vessel will be maintained comparable to the original design standards for the lifeof thc facility. Structural integrity is required to ensure that (I) the steel liner remains leak tight and (2) the concrete surrounding the steel liner remains capable ofproviding external missile protection for the steel liner and radiation shielding in the event ofa LOCA. A visual inspection in conjunction with Type A leakage tests is sufficient to demonstrate this capability.
The lower temperature limitof60'F willlimitthe calculated peak containment pressure to less than the containment design pressure of 12 psig.
The calculation for maximum peak containment pressure folio;vinga LOCA assumes an initialcontainment pressure ofpositive 0.3 psig and demonstrates that the 12 psig containment design pressure willnot be exceeded.
COOK NUCLEAR PLANT-UNITI Page B 3/4 6-2 AMENDMENT426) 214
3/4 BASES
'. '/4.6 CONTAINMENTSYSTEMS 3/4.6.1 4-INTERVALPRESSURE The limitations on containment internal pressure ensure that I) the containment structure is prevented from exceeding its design negative pressure differential with respect to the outside atmosphere of & psig and 2) thc containment peak pressure does,not exceed the design pressure of 12 psig during LOCA conditions.
The m um pe pressure r ting from a L~Aevent is ated to bc 11 psig, which i udes 0.3 g
for'tial osi'containm t
ressure.
3/4.6.1.5 AIR TEMPERATURE The limitations on containment average air temperature ensure that 1) the containment air mass is limited to an initial mass sufficiently low to prevent exceeding, the design pressure:during. LOCA conditions and:2) the ambicnt---:-
air temperature does not exceed that temperature allowable for the continuous duty rating specified for equipment and instrumentation located within containment.
The containment pressure transient is sensitive to the initiall contained air mass durin a LOCA. The contained air mass increases with decreasin tern crature.
'I'he lowe~cmpera limitof F wi)1 Ijafitthe pe rcssure to
.49 psi hich is I than the ntainmcnf design pr6sure o psig.
e upper temperature limitinfluences the peak accident temperature slightly during a L A;
owever, t is imit is based primarily upon equipment protection and anticipated operating conditions. Both the upper and lower temperature limits are consistent with thc parameters used in the accident analyses.
3/4.6.1.6 CONTAINMENTVESSEL STRUCTURAL INTEGRITY This limitation ensures that the structural integrity of the containment willbe maintained comparable to the original design standards for the lifeof the facility. Structural integrity is required to ensure that (I) the steel liner remains leak tight and (2) the concrete surrounding the steel liner remains capable of providing external missile protection for the steel liner and radiation shielding in the event of a LOCA. A visual inspection in conjunction with Type A leakage tests is sufficient to demonstrate this capability.
'he lower temperature limitof60'F willlimitthe calculated peak containment pressure to less than the containment design pressure of 12 psig.
The calculation for maximum peak containment pressure following a LOCA assumes an initialcontainment pressure ofpositive 0.3 psig and demonstrates that the 12 psig containment design pressure willnot be exceeded.
COOK NUCLEAR PLANT-UNIT2 Page B 3/4 6-2 AMENDMENT199
ATTACHMENT 3 TO AEP:NRC:1317 PROPOSED TECHNICAL SPECIFICATION AMENDMENT CONTAINMENT SYSTEMS BASES 3/4.6.1.4 INTERNAL PRESSURE and 3/4.6.1.5 AIR TEMPERATURE
3/4 BASES 3/4.6 'ONTAINMENTSYSTEMS 3/4.6.1.4 INTERNALPRESSURE 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 8 psig and 2) the containment peak pressure does not exceed the design pressure of 12 psig during LOCA conditions.
The calculation for maximum peak containment pressure following a LOCA assumes an initial containment pressure of positive 0.3 psig and demons rates that the 12 psig containment design pressure will not be exceeded.
3/4.6.1.5 AIR TEMPERATURE The limitations on containment average air temperature ensure that
- 1) the containment air mass is limited to an initial mass sufaciently low to prevent exceeding the design pressure during LOCA conditions and 2) the ambient air temperature does not exceed that temperature allowable for the continuous duty rating specified for equipment and instrumentation located within containment.
The containment pressure transient is sensitive to the initially contained air mass during a LOCA. The contained air mass increases with decreasing temperature.
The lower temperature limitof60'F willlimit the calculated peak containment pressure to less than the containment design pressure of 12 psig.
The upper temperature limit influences the peak accident temperature slightly during a LOCA; however, this limit is based primarily upon equipment protection and anticipated operating conditions.
Both the upper and lower temperature limits are consistent with the parameters used in the accident analyses.
3/4.6.1.6 CONTAINMENTVESSEL STRUCTURAL INTEGRITY This limitation ensures that the structural integrity of the containment steel vessel will be maintained comparable to the original design standards for the lifeof the facility. Structural integrity is required to ensure that (1) the steel liner remains leak tight and (2) the concrete surrounding the stccl liner remains capable ofproviding external missile protection for the steel liner and radiation shielding in the event ofa LOCA. A visual inspection in conjunction with Type A leakage tests is sufficient to demonstrate this capability.
COOK NUCLEAR PLANT-UNIT 1 Page B 3/4 6-2 AMENDMENT~) ~)
UNIT 2
", 3/4.
BASES 3/4.6 CONTAINMENTSYSTEM IS 3/4.6.1.4 INTERNALPRESSURE 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 8 psig and 2) the containment peak pressure does not exceed the design pressure of 12 psig during LOCA conditions.
The calculation for maximum peak containment pressure following a LOCA assumes an initialcontainment pressure of positive 0.3 psig and demonstrates that the 12 psig containment design pressure will not be exceeded.
3/4.6.1.5 AIR TEMPERATURE The limitations on containment average air temperature ensure that I) the containment air mass is limited to an initial mass sufficiently low to prevent exceeding the design pressure during LOCA conditions and 2) the ambient air temperature does nor exceed that temperature allowable for the continuous duty rating specified for equipment and instrumentation located within containment.
The containment pressure transient is sensitive to the initiallycontained air mass during a LOCA. The contained air mass increases with decreasing temperature.
The lower temperature limitof60'F willlimitthe calculated peak containment pressure to less than the containment design pressure of 12 psig.
The upper temperature limit influences the peak accident temperature slightly during a LOCA; however, this limit is based primarily upon equipment protection and anticipated operating conditions.
Both the upper and lower temperature limits are consistent with the parameters used in the accident analyses.
3/4.6.1.6 CONTAINMENTVESSEL STRUCTURAL INTEGRl i s
This limitation ensures that the structural integrity of the containmcnt willbe maintained comparable to the original design standards for the life of the facility. Structural integrity is required to ensure that (I) the steel liner remains leak tight and (2) the concrete surrounding the steel liner remains capable of providing external missile protection for the steel liner and radiation shielding in the event of a LOCA. A visual inspection in conjunction with Type A leakage tests is sufficient to demonstrate this capability.
COOK NUCLEAR PLANT-UNIT2 Page B 3/4 6-2 AMENDMENT4QQ,
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