ML18012A786
| ML18012A786 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 05/16/1997 |
| From: | CAROLINA POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML18012A785 | List: |
| References | |
| NUDOCS 9705220300 | |
| Download: ML18012A786 (9) | |
Text
ENCLOSURE 5 TO SERIAL: HNP-97-068 SHEARON HARRIS NUCLEAR POWER PLANT NRC DOCKET NO. 50-400/LICENSE NO. NPF-63 REQUEST FOR LICENSE AMENDMENT MINIMUMCOOLING WATER FLOW TO THE CONTAINMENTFAN COOLERS TECHNICALSPECIFICATION 3/4.6.2, DEPRESSURIZATION AND COOLING SYSTEMS TECHNICALSPECIFICATION PAGES 970smosoo 970sss PDR ADQCK 05000400 P PDR Page E5- I
CONTAINHENT SYSTEHS CONTAINHENT COOLINQ SYSTEH LIHITING CONDITION FOR OPERATION 3.6.2.3 Four containment fan coolers (AH-l, AH-2; AH-3 and AH-4) shall be OPERABLE with one of two fans in each cooler capable of operation at low speed. Train SA consists of AH-2 and AH-3. Train SB consists of AH"1 and AH-4.
APPLICABILITY: MODES 1, 2, 3, and 4.
ACTION:
Nth one train of the above required'contafnment fan coolers inoper-a.'.
able and both Containment Spray Systaas'OPERABLE, restore the inoper-able train of fan coolers to OPERABLE status withfn 7 days 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 SHUTOOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
Wfth both trains of the above requfred containment fan coolers fnoperable and both Containment Spray Systems OPERABLE, restore at least one train of fan coolers to OPERABLE status wfthin 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be fn 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 />. Restore both above required trafns of fan cool'ers to OPERABLE status within 7 days of inftfa1 or be fn 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 'oss COLD SHUTDOQi within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
Co Wth one train of the above riqufred contafraent fan coolers fnoper able and one Contafneent Spray Systea inoperable, restore the inoper-able Spray Systee 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 SThNSY wfthfn the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and fn COLD SHUTDOWN wfthfn the foIIowfng 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. Restore the fnoperable trafn of containment fan coolers to OPERABLE status ~ithin 7 days of fnftfal loss 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 fn COLD SHUTNWN within the followfng 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
SURVEILLANCE RE UIREHENT$
4.6.2.3 Each train of contafraent fan coolers shall be demonstrated OPERABLE:
a At least once per 31 days by':
Starting each fan trafn free the control room, and verifying that each ran train operates for at least 15 afnutas, and
- 2. e ffyfng a cooling water flow rate of ater than or e I go~ to each cooler. ~4<Cl baglss'vjc col I'Sct/oA Lo RES/eg eaW t co~ggg<~~
- b. At least once per 1S months by verifying autoeatfcally on a safety infection test, signal.
SHEARON HARRIS UNIT 1 3/4 6-13
CONTAINMENT SYSTEMS BASES CONTAINMENT VENTILATION SYSTEM Continued gross leakage failures could develop. The 0.60 L~ leakage limit of Specifica-tion 3.6.1.2b. shall not be exceeded when the leakage rates determined by the leakage integrity tests of these valves are added to the previously determined total for all valves and penetrations subject to Type B and C tests.
3 4 6 DEP ESS IZ TIO ND CO L G SYS E S 3 4 6 1 CO TAINMENT SPRAY SYSTEM The OPERABILITY of the Containment Spray System ensures that containment de-pressurization and cooling capability will be available in the event of a LOCA or 'steam line break. The pressure reduction and resultant lower containment leakage. rate are consistent with the assumptions used in the safety analyses.
The Containment Spray System and the Containment Fan Coolers are redundant to each other in providing post-accident cooling of the containment atmosphere.
However, the Containment Spray System also provides a mechanism for removing iodine from the containment atmosphere and therefore the time requirements for restoring an inoperable spray system to OPERABLE status have been maintained consistent with that assigned other inoperable ESF equipment.
3 4 6 2 2 SPRAY ADDITIVE SYSTEM The OPERABILITY of the Spray Additive System ensures that sufficient NaOH is added to the containment spray in the event of a LOCA ~ The limits on NaOH volume and concentration ensure a pH value of between 8.5 and 11.0 for the solution recirculated within containment after a LOCA. This pH band 'minimizes the evolution of iodine and minimizes the effect of chloride and caustic "stress corrosion on mechanical systems and components. The contained solution volume limit includes an allowance for solution not usable because of tank discharge line location or other physical characteristics. These assumptions are consistent with the iodine removal efficiency assumed in the safety analyses.
The maximum and minimum volumes for the. Spray Additive Tank are based on the analytical limits. The specified indicated levels used for surveillance include instrument uncertainties and unusable tank volume.
3 4 6 2 3 CONTAINMENT COOLING SYSTEM The OPERABILITY of the Containment Fan Coolers ensures that adequate heat re-moval capacity is available when operated in conjunction with the Containment Spray Systems during post-LOCA conditions.
The Containment Fan Coolers and the Containment Spray System are redundant to each other in providing post-accident cooling of the containment atmosphere.
Es~ 4>ow><<e +~ +hecoua~,ia~ew Fa.n corsets wil/ eat>hase'cL eN reset vofh tevel. Accepea6/e, Fs ptowwapp ('s Qpzpppcpp oz the n~m6et e4 he~8 exch~~,ger tubes lk serv'Ice. Surveys/Ioltice, test ~ c'aPW<Atc< elk Seri'a.shod'I 6e a.g 'uzggct. gow ~hese o.chic ls.
SH , IS - N
CONTAINMENT SYSTEHS 8ASES 1
As a result of this redundancy in caaling capabflity the allowable aut-of-t servfce time requfrenents for the Containment Fan Coolers have been appropri-ately adjusted. However, the aIIowab1e out-of-service time requfmnents for the Containment Spray. System have been mafntafned consistent with that assigned other inoperable ESF equipment sfnce the Contafnment Spray System also provides a mechanism for renoving iodine from the cantafnment atmosphere-3/4.6. 3 CONTAINMENT ISOlATION VALVES The OPERABILITY of the contafnment isolation valves ensures that the cantafnme<<
~
~
atmosphere will be isolated from the outside environment fn the event of a release of radfoactive materf al Ca the contaf nment atmosphere or pressurf zatf an af the containment and fs consistent with the requirements of General Design Criteria 54 through 5? of Appendfx A to 10 CFR Pirt 50. Contafnment fsolatfon within the time limits specified for those isolation valves desfgned ta close automatically ensures that the release of radfoactfve material to the environ-ment wfll be consistent with the assumptions used in the analyses for a LOCA.
3/4.6.4 COMBUSTIBLE GAS CONTROL The OPERASILXTY of the equipment and systems requfr'ed for the detectfon and cantral of hydrogen gas ensures that this equipment will be available to main-tain the hydrogen concentratian within containment below fts flammable limit durfng post-LOCA condftfons. Either recombfner unft fs'apable of controlling the expected hydrogen generation associated with: (I} zfrconf~ter reactions, (2) radfoIytfc decomposition of water, and (3) carrosfon of metals within can-tafnment. This >drogen control systen fs consistent with the recommendations of. Regulatory Guide L?, "Control af Combustfb1e Gas Concentratfons fn Contain-ment Following a LOCA," Rev. 2, Navember IS?8.
3/4.6.5 VACtNN RELIEF SYSTEM The OPERABILITY of the primary containment, ta atmosphere vacuum relief vaIves ensure that the cantainment internal pressure does nat became more negative than -L93 psig. This condition fs necessary to prevent exceeding the can-t taf nment design limf for internal vacuum af -2 psf g.
SHEARQN HARRIS - UNIT 1 B 3/4 6-4
CONTAINMENT SYSTEMS CONTAINMENT COOLING SYSTEM LIMITING CONDITION FOR OPERATION 3.6.2.3 four containment fan coolers (AH-1, AH-2, AH-3, and AH-4) shall be OPERABLE with one of two fans in each cooler capable of operation at low speed. Train SA consists of AH-2 and AH-3. Train SB consists of AH-1 and AH-4.
APPLICABILITY: MODES 1, 2, 3, and 4.
ACTION:
With one train of the above required containment fan coolers inoperable and both Containment Spray Systems OPERABLE, restore the inoperable train of fan coolers to OPERABLE status within 7 days 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 />.
With both trains of the above required containment fan coolers inoperable and both Containment Spray Systems OPERABLE, restore at least one train of fan coolers 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 /> 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 />. Restore both above required trains of fan coolers to OPERABLE status within 7 days of initial loss 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 />.
With one train of the above required containment fan coolers inoperable and 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 /> 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 />. Restore the inoperable train of containment fan coolers to OPERABLE status within 7 days of initial loss 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 4.6.2.3 Each train of containment fan coolers shall be demonstrated OPERABLE:
- a. At least once per 31 days by:
- 1. Starting each fan train from the control room, and verifying that each fan train operates f'r at least 15 minutes. and
- 2. Verifying a cooling water flow rate, after correction to design basis service water conditions, of greater than or equal to 1300 gpm to each cooler.
At least once per 18 months by verifying that each fan train starts automatically on a safety injection test signal.
SHEARON HARRIS - UNIT 1 3/4 6-13 Amendment No.
CONTAINMENT SYSTEMS BASES CONTAINMENT VENTILATION SYSTEM Continued gross leakage fai lures could develop. The 0.60 L, leakage limit of Specification 3.6. 1.2b. shall not be exceeded when the leakage rates determined by the leakage integrity tests of these valves are added to the previously determined total for all valves and penetrations subject to Type B and C tests.
3/4.6.2 DEPRESSURIZATION AND COOLING SYSTEMS 3/4.6.2. 1 CONTAINMENT SPRAY SYSTEM The OPERABILITY of the Containment Spray System ensures that containment depressurization and cooling capability will be available in the event of a LOCA or steam line break. The pressure reduction and resultant lower containment leakage rate are consistent with the assumptions used in the saf'ety analyses.
'I The Containment Spray System and the Containment Fan Coolers are redundant to each other in providing post-accident cooling of the containment atmosphere.
However, the Containment Spray System also provides a mechanism for removing ,
iodine from the containment atmosphere and therefore the time requirements for restoring an inoperable spray system to OPERABLE status have been maintained consistent with that assigned other inoperable ESF equipment.
3/4.6.2. 2 SPRAY ADDITIVE SYSTEM The OPERABILITY of the Spray Additive System ensures that suff'icient NaOH is added to the containment spray in the event of a LOCA. The limits on NaOH volume and concentration ensure a pH value of between 8.5 and 11.0 for the solution recirculated within containment after a LOCA. This pH band minimizes the evolution of iodine and minimizes the effect of chloride and caustic stress corrosion on mechanical systems and components. The contained solution volume limit includes an allowance for solution not usable because of tank discharge line location or other physical characteristics. These assumptions are consistent with the iodine removal efficiency assumed in the safety analyses.
The maximum and minimum volumes for the Spray Additive Tank are based on the analytical limits. The specified indicated levels used for surveillance include instrument uncertainties and unusable tank volume.
3/4.6.2. 3 CONTAINMENT COOLING SYSTEM The OPERABILITY of the Containment Fan Coolers ensures that adequate heat re-moval capacity is available when operated in conjunction with the Containment Spray Systems during post-LOCA conditions.
ESW flowrate to the Containment Fan Coolers will vary based on reservoir level. Acceptable ESW flowrate is dependent on the number of heat exchanger tubes in service. Surveillance test acceptance criteria should be adjusted for these factors.
SHEARON HARRIS - UNIT 1 8 3/4 6-3 Amendment No.
CONTAINMENT SYSTEMS 0
BASES The Containment Fan Coolers and the Containment Spray System are redundant to each other in providing post-accident cooling of the containment atmosphere.
As a result of this redundancy in cooling capability. the allowable out-of-service time requirements for the Containment Fan Coolers have been appropriately adjusted. However, the allowable out-of-service time requirements for the Containment Spray System have been maintained consistent with that assigned other inoperable ESF equipment since the Containment Spray System also provides a mechanism for removing iodine from the containment atmosphere.
3/4.6.3 CONTAINMENT ISOLATION VALVES, The OPERABILITY of the containment isolation valves ensures that the containment atmosphere will be isolated from the outside environment in the event of a release of radioactive material to the containment atmosphere or pressurization of'he containment and is consistent with the requirements of General Design Criteria 54 through 57 of Appendix A to 10 CFR Part 50.
Containment isolation within the time limits specified for those isolation valves designed to close automatically ensures that the release of radioactive material to the environment will be consistent with the assumptions used in the analyses for a LOCA.
3/4.6.4 COMBUSTIBLE GAS CONTROL The OPERABILITY of the equipment and systems required for the detection and control of hydrogen gas ensures that this equipment will be available to maintain the hydrogen concentration within containment below its flammable limit during post-LOCA conditions. Either recombiner unit is capable of controlling the expected hydrogen generation associated with:
(1) zirconium-water reactions, (2) radiolytic decomposition of water, and (3) corrosion of metals within containment. This hydrogen control system is consistent with the recommendations of Regulatory Guide 1.7, "Control of Combustible Gas Concentrations in Containment Following a LOCA," Rev. 2, November 1978.
3/4.6.5 VACUUM RELIEF SYSTEM The OPERABILITY of the primary containment to atmosphere vacuum relief valves ensures that the containment internal pressure does not become more negative than -1.93 psig. This condition is necessary to prevent exceeding the con-tainment design limit for internal vacuum of -2 psig.
SHEARON HARRIS - UNIT 1 B 3/4 6-4 Amendment No.
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