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| | issue date = 03/18/1992 | | | issue date = 03/18/1992 |
| | title = Application for Amend to License NPF-21,revising TS 4.6.6.1.b.3 Re Primary Containment Atmosphere Control | | | title = Application for Amend to License NPF-21,revising TS 4.6.6.1.b.3 Re Primary Containment Atmosphere Control |
| | author name = SORENSEN G C | | | author name = Sorensen G |
| | author affiliation = WASHINGTON PUBLIC POWER SUPPLY SYSTEM | | | author affiliation = WASHINGTON PUBLIC POWER SUPPLY SYSTEM |
| | addressee name = | | | addressee name = |
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| | document type = OPERATING LICENSES-APPLIATION TO AMEND-RENEW EXISTING, TEXT-LICENSE APPLICATIONS & PERMITS | | | document type = OPERATING LICENSES-APPLIATION TO AMEND-RENEW EXISTING, TEXT-LICENSE APPLICATIONS & PERMITS |
| | page count = 10 | | | page count = 10 |
| | | project = |
| | | stage = Request |
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| {{#Wiki_filter:ACCELERATED DISTRIBUTION DEMONSTPATION SYSTEM t t REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDE)ACCESSION NBR:9203250293 DOC.DATE: 92/03/18 NOTARIZED: | | {{#Wiki_filter:ACCESSION NBR:9203250293 t |
| YES FACIL:50-,397 WPPSS Nuclear Project, Unit 2, Washington Public Powe AUTH.NAME AUTHOR AFFILIATION SORENSEN,G.C. | | ACCELERATED DISTRIBUTION DEMONSTPATION SYSTEM DOC.DATE: 92/03/18 t |
| Washington Public Power Supply System RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk) | | REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDE) |
| | NOTARIZED: YES DOCKET FACIL:50-,397 WPPSS Nuclear Project, Unit 2, Washington Public Powe 05000397 AUTH. NAME AUTHOR AFFILIATION SORENSEN,G.C. Washington Public Power Supply System RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk) |
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| ==SUBJECT:== | | ==SUBJECT:== |
| Application for amend to License NPF-21,revising TS 4.6.6.l.b.3 re primary containment atmosphere control.DISTRIBUTION CODE: AOOZD COPIES RECEIVED:LTR J ENCL/SIZE: TITLE: OR Submittal: | | Application for amend to License NPF-21,revising TS 4.6.6. l.b.3 re primary containment atmosphere control. |
| General Distribution DOCKET 05000397 NOTES: RECIPIENT ID CODE/NAME PD5 LA ENG,P.L.INTERNAL: ACRS NRR/DET/ESGB NRR/DST 8E2 NRR/DST/S I CB8H7 NUDOCS-ABSTRACT OGC/HDS1 RES/DSIR/EIB EXTERNAL: NRC PDR COPIES LTTR ENCL 1 1 2 2 6 6 1 1 1 1 1 1 1 1 1 0 1 1 1 1 RECIPIENT ID CODE/NAME PD5 PD NRR/DET/ECMB 7D NRR/DOEA/OTSB11 NRR/DST/SELB 7E NRR/DST/SRXB 8E OC/LEMB RES FILE Ol NSIC COPIES LTTR ENCL 1 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 NOTE TO ALL"RIDS" RECIPIENTS:
| | DISTRIBUTION CODE: AOOZD TITLE: OR COPIES RECEIVED:LTR Submittal: General Distribution J ENCL / SIZE: |
| PLEASE HELP US TO REDUCE WASTE!CONTACT THE DOCUMENT CONTROL DESK, ROOM P 1-37 (EXT.20079)TO ELIMINATE YOUR NAME FROM DISI'RIBUTION LISES FOR DOCUMENTS YOU DON'T NEED!TOTAL NUMBER OF COPIES REQUIRED: LTTR 24 ENCL 22 V ga e WASHINGTON PUBLIC POWER SUPPLY SYSTEM P.O.Bm 968~3000 George Wasbtngton Way~Richland, Wasbtngton 99352-0968 | | NOTES: |
| ~(509)372-5000 March 18, 1992 G02-92-064 Docket No.50-397 U.S.Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C.20555 Gentlemen: | | RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD5 LA 1 1 PD5 PD 1 1 ENG,P.L. 2 2 INTERNAL: ACRS 6 6 NRR/DET/ECMB 7D 1 1 NRR/DET/ESGB 1 1 NRR/DOEA/OTSB11 1 1 NRR/DST 8E2 1 1 NRR/DST/SELB 7E 1 1 NRR/DST/S I CB8H7 1 1 NRR/DST/SRXB 8E 1 1 NUDOCS-ABSTRACT 1 1 OC/LEMB 1 0 OGC/HDS1 1 0 RES FILE Ol 1 1 RES/DSIR/EIB 1 1 EXTERNAL: NRC PDR 1 1 NSIC 1 1 NOTE TO ALL "RIDS" RECIPIENTS: |
| | PLEASE HELP US TO REDUCE WASTE! CONTACT THE DOCUMENT CONTROL DESK, ROOM P 1-37 (EXT. 20079) TO ELIMINATEYOUR NAME FROM DISI'RIBUTION LISES FOR DOCUMENTS YOU DON'T NEED! |
| | TOTAL NUMBER OF COPIES REQUIRED: LTTR 24 ENCL 22 |
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| | WASHINGTON PUBLIC POWER SUPPLY SYSTEM P.O. Bm 968 ~ 3000 George Wasbtngton Way ~ Richland, Wasbtngton 99352-0968 ~ (509) 372-5000 March 18, 1992 G02-92-064 Docket No. 50-397 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555 Gentlemen: |
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| ==Subject:== | | ==Subject:== |
| NUCLEAR PLANT NO.2, OPERATING LICENSE NPF-21 REQUEST FOR AMENDMENT TO TECHNICAL SPECIFICATION 4.6.6.l.b.3 PRIMARY CONTAINMENT ATMOSPHERE CONTROL | | NUCLEAR PLANT NO. 2, OPERATING LICENSE NPF-21 REQUEST FOR AMENDMENT TO TECHNICAL SPECIFICATION 4.6.6. l.b.3 PRIMARY CONTAINMENT ATMOSPHERE CONTROL |
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| ==Reference:== | | ==Reference:== |
| | Letter, G02-92-061, JW Baker (SS) to JB Hartin (NRC), |
| | "Request for Waiver of Compliance Relative to Technical Specification 4.6.6. l.b.3 Containment Atmosphere Control", |
| | dated March 13, 1992 In accordance with the Code of Federal Regulations, Title 10, Parts 50.90, 2. 101, and 50.91(a)(6), the Supply System hereby submits a request for amendment to the WNP-2 Technical Specifications on an exigent basis as provided for in the regulations. Specifically, the Supply System is requesting that the Technical Specification Surveillance Requirement 4.6.6. l.b.3 be revised to provide a more appropriate acceptance criterion for demonstrating operability of the primary containment hydrogen recombiner systems. |
| | On March 13, 1992, by the Reference letter, the Supply System requested relief from the Technical Specification Containment Atmosphere Control (CAC) surveil-lance requirement that upon introduction of a 1% by volume hydrogen in a 140-180 scfm stream containing at least 1% by volume oxygen, that the catalyst bed temperature rises in excess of 120 degrees F within 20 minutes. |
| | The reason for requesting the waiver was that as a result of intensive review of the operability of the CAC it had become evident that the'acceptance criterion of the Technical Specification was very dependent on the analytical methods of calculating the input parameters and measurement of performance indicators; hydrogen concentration, process flows and temperatures. Depending on the methods of calculating the input parameters, the temperature rise experienced can vary significantly. The review had led to refinements in input parameter determina-tion. As a result, during this review the temperature rise acceptance criterion method was identified as suspect. In addition to the analytical methods used to 9203250293 9203i8 PDR~ ADOCK 05000397 P PDR |
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| | Page Tag RE(VEST FOR AMENDMENT TO TECHNICAL SPECIFICATION 4.6.6.l.b.3 CONTAINMENT ATMOSPHERE CONTROL determine the input parameters, other factors such as: heat removed by the gas flow; heat capacity of the catalyst bed and the vessel; losses through vessel insulation, supports, and piping; time lag and heat loss caused by temperature sensors and uncertainties in flow determination during testing, all led to a conclusion that the present temperature rise acceptance criterion was not, by itself, an accurate reflection of catalyst operability. Test results showed variations primarily are a result of the ability to set initial conditions, input parameters, and instrument uncertainty. |
| | As a result of an internal safety system functional inspection self assessment, it was concluded that sampling of the influent and effluent gases would be a more direct indication of catalyst efficiency. This was confirmed with the assistance of industry experts in catalyst bed design and operation. An appropriate acceptance criterion would be the sampling of the effluent gas stream for hydrogen concentration for a defined input volume percent of hydrogen. A sample retaining less than 25 parts per million by volume (ppmV) hydrogen (called reactor leakage in industry terminology) after passing through the catalyst bed would indicate acceptable recombiner operation for a feed of at least 1% hydrogen by volume. The Reference letter summarized sampling and testing performed on March 12 and 13 that showed 6 ppmV hydrogen concentration in the effluent stream of both recombiner trains. It was these test results that led the Supply System to conclude that the catalyst efficiency was acceptable and capable of performing in support of plant operation and that a waiver request was appropriate. |
| | The Supply System, by this submittal, is requesting that the Technical Specification 4.6.6. l.b.3 be revised to provide for the demonstration of the operability of the CAC system by sampling of the effluent stream for a hydrogen concentration of less than 25 ppmV for the introduction of at least 1% by volume hydrogen into the catalyst bed preheated to a temperature not to exceed 300'F in lieu of the existing reference to catalyst bed temperature rise and flow. This submittal proposes the use of 25 ppmV as the acceptance criterion rather than the 10 ppmV mentioned in the Reference letter which was the basis for requesting the waiver. The 25 ppmV value is believed to be an acceptable indication of recombiner operation while leaving room for the inaccuracy in the measurement techniques. The catalyst expert mentioned above has stated that 25 ppmV would be an acceptable indication of catalyst performance as it indicates a minimum efficiency of 99.75% efficiency for a hydrogen feed of at least 1%. An effluent hydrogen concentration of 100 ppmV would indicate a possible problem with the catalyst and would require further investigation. |
| | Changes to Bases 3/4.6.6 are provided to support this change request and to reflect the oxygen control function of the CAC system resulting from the change to an inerted containment. WNP-2 design basis for combustible gas control was changed from hydrogen control with a non-inerted containment to oxygen control with a nitrogen inerted containment during plant licensing. |
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| | RE/VEST FOR AMENDMENT TO TECHNICAL SPECIFICATION 4.6.6.1.b.3 CONTAINMENT ATMOSPHERE CONTROL The Supply System con'eludes that using the "less than 25 ppmV hydrogen concentra-tion" acceptance criterion does not involve a significant hazards consideration for the following reasons: |
| | ~ It would not involve a significant increase in the probability or consequences of an accident. The recombiners are provided as an accident mitigating feature and, as such, do not have potential to cause an accident. In addition, the consequences of accidents are not increased. |
| | The 25 ppmV acceptance criterion more adequately demonstrates operability of the Containment Atmosphere Control system as it is a more direct indication of recombiner operational efficiency and is not dependent on analytical methods of determining input parameters or temperature losses and temperature measurement inaccuracies. Hence, there is no increase in the consequences of an accident introduced by this request as the proposed testing method is superior to that currently in the Technical Specifica-tion as it better quantifies the conversion capability of the catalyst. |
| | The existing testing method only confirms an efficiency of approximately 80% while the proposed method confirms a minimum efficiency of 99.75% for the minimum 1% hydrogen feed. |
| | It would not create the possibility of a new or different kind of accident. No new methods of system operation are introduced by this request. Accordingly, no new or different kind of accident is credible as' result of this request. |
| | It would not create a significant decrease in a margin of safety. The proposed testing provides a more direct and rigorous acceptance criterion. |
| | Sampling of the feed and product gases will be a more reliable indicator of catalyst performance thus assuring that the margin to unacceptable oxygen level is maintained. Limiting the catalyst bed preheat temperature to less than that expected for a LOCA condition provides additional insurance that the margin of safety will be maintained. Hence, this request does not represent a decrease in a margin of safety. |
| | As discussed above, the Supply System considers that this change does not involve a significant hazards consideration, nor is there a potential for significant change in the types or significant increase in the amount of any effluents that may be released offsite, nor does it involve a significant increase in individual or cumulative occupational radiation exposure. Accordingly, the proposed change meets the eligibility criteria for categorical exclusion set forth in 10CFR 51.22(c)(9) and therefore, per 10CFR 51.22(b), an environmental assessment of the change is not required. |
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| | Page Fqur RE(VEST FOR AHENDHENT TO TECHNICAL SPECIFICATION 4.6.6.l.b.3 CONTAINHENT ATHOSPHERE CONTROL This Technical Specification change has been reviewed and approved by the WNP-2 Plant Operations Committee (POC) and the Supply System Corporate Nuclear Safety Review Board (CNSRB). In accordance with 10CFR 50.91, the State of Washington has been provided a copy of this letter. |
| | Sincerely, G. C. Sp ensen, Manager Regulatory Programs (Hail Drop 280) |
| | AGH/bI< |
| | Attachments CC: JB Hartin - NRC RV NS Reynolds - Winston 8 Strawn WH Dean - NRC DL Williams - BPA/399 NRC Site Inspector - 901A |
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| Letter, G02-92-061, JW Baker (SS)to JB Hartin (NRC),"Request for Waiver of Compliance Relative to Technical Specification 4.6.6.l.b.3 Containment Atmosphere Control", dated March 13, 1992 In accordance with the Code of Federal Regulations, Title 10, Parts 50.90, 2.101, and 50.91(a)(6), the Supply System hereby submits a request for amendment to the WNP-2 Technical Specifications on an exigent basis as provided for in the regulations.
| | STATE OF WASHINGTON) |
| Specifically, the Supply System is requesting that the Technical Specification Surveillance Requirement 4.6.6.l.b.3 be revised to provide a more appropriate acceptance criterion for demonstrating operability of the primary containment hydrogen recombiner systems.On March 13, 1992, by the Reference letter, the Supply System requested relief from the Technical Specification Containment Atmosphere Control (CAC)surveil-lance requirement that upon introduction of a 1%by volume hydrogen in a 140-180 scfm stream containing at least 1%by volume oxygen, that the catalyst bed temperature rises in excess of 120 degrees F within 20 minutes.The reason for requesting the waiver was that as a result of intensive review of the operability of the CAC it had become evident that the'acceptance criterion of the Technical Specification was very dependent on the analytical methods of calculating the input parameters and measurement of performance indicators; hydrogen concentration, process flows and temperatures.
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| Depending on the methods of calculating the input parameters, the temperature rise experienced can vary significantly.
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| The review had led to refinements in input parameter determina-tion.As a result, during this review the temperature rise acceptance criterion method was identified as suspect.In addition to the analytical methods used to 9203250293 9203i8 PDR~ADOCK 05000397 P PDR Qs 1" b Page Tag RE(VEST FOR AMENDMENT TO TECHNICAL SPECIFICATION 4.6.6.l.b.3 CONTAINMENT ATMOSPHERE CONTROL determine the input parameters, other factors such as: heat removed by the gas flow;heat capacity of the catalyst bed and the vessel;losses through vessel insulation, supports, and piping;time lag and heat loss caused by temperature sensors and uncertainties in flow determination during testing, all led to a conclusion that the present temperature rise acceptance criterion was not, by itself, an accurate reflection of catalyst operability.
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| Test results showed variations primarily are a result of the ability to set initial conditions, input parameters, and instrument uncertainty.
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| As a result of an internal safety system functional inspection self assessment, it was concluded that sampling of the influent and effluent gases would be a more direct indication of catalyst efficiency.
| |
| This was confirmed with the assistance of industry experts in catalyst bed design and operation.
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| An appropriate acceptance criterion would be the sampling of the effluent gas stream for hydrogen concentration for a defined input volume percent of hydrogen.A sample retaining less than 25 parts per million by volume (ppmV)hydrogen (called reactor leakage in industry terminology) after passing through the catalyst bed would indicate acceptable recombiner operation for a feed of at least 1%hydrogen by volume.The Reference letter summarized sampling and testing performed on March 12 and 13 that showed 6 ppmV hydrogen concentration in the effluent stream of both recombiner trains.It was these test results that led the Supply System to conclude that the catalyst efficiency was acceptable and capable of performing in support of plant operation and that a waiver request was appropriate.
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| The Supply System, by this submittal, is requesting that the Technical Specification 4.6.6.l.b.3 be revised to provide for the demonstration of the operability of the CAC system by sampling of the effluent stream for a hydrogen concentration of less than 25 ppmV for the introduction of at least 1%by volume hydrogen into the catalyst bed preheated to a temperature not to exceed 300'F in lieu of the existing reference to catalyst bed temperature rise and flow.This submittal proposes the use of 25 ppmV as the acceptance criterion rather than the 10 ppmV mentioned in the Reference letter which was the basis for requesting the waiver.The 25 ppmV value is believed to be an acceptable indication of recombiner operation while leaving room for the inaccuracy in the measurement techniques.
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| The catalyst expert mentioned above has stated that 25 ppmV would be an acceptable indication of catalyst performance as it indicates a minimum efficiency of 99.75%efficiency for a hydrogen feed of at least 1%.An effluent hydrogen concentration of 100 ppmV would indicate a possible problem with the catalyst and would require further investigation.
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| Changes to Bases 3/4.6.6 are provided to support this change request and to reflect the oxygen control function of the CAC system resulting from the change to an inerted containment.
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| WNP-2 design basis for combustible gas control was changed from hydrogen control with a non-inerted containment to oxygen control with a nitrogen inerted containment during plant licensing.
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| 4 II t'age Tlu ee RE/VEST FOR AMENDMENT TO TECHNICAL SPECIFICATION 4.6.6.1.b.3 CONTAINMENT ATMOSPHERE CONTROL The Supply System con'eludes that using the"less than 25 ppmV hydrogen concentra-tion" acceptance criterion does not involve a significant hazards consideration for the following reasons:~It would not involve a significant increase in the probability or consequences of an accident.The recombiners are provided as an accident mitigating feature and, as such, do not have potential to cause an accident.In addition, the consequences of accidents are not increased.
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| The 25 ppmV acceptance criterion more adequately demonstrates operability of the Containment Atmosphere Control system as it is a more direct indication of recombiner operational efficiency and is not dependent on analytical methods of determining input parameters or temperature losses and temperature measurement inaccuracies.
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| Hence, there is no increase in the consequences of an accident introduced by this request as the proposed testing method is superior to that currently in the Technical Specifica-tion as it better quantifies the conversion capability of the catalyst.The existing testing method only confirms an efficiency of approximately 80%while the proposed method confirms a minimum efficiency of 99.75%for the minimum 1%hydrogen feed.It would not create the possibility of a new or different kind of accident.No new methods of system operation are introduced by this request.Accordingly, no new or different kind of accident is credible as'result of this request.It would not create a significant decrease in a margin of safety.The proposed testing provides a more direct and rigorous acceptance criterion.
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| Sampling of the feed and product gases will be a more reliable indicator of catalyst performance thus assuring that the margin to unacceptable oxygen level is maintained.
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| Limiting the catalyst bed preheat temperature to less than that expected for a LOCA condition provides additional insurance that the margin of safety will be maintained.
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| Hence, this request does not represent a decrease in a margin of safety.As discussed above, the Supply System considers that this change does not involve a significant hazards consideration, nor is there a potential for significant change in the types or significant increase in the amount of any effluents that may be released offsite, nor does it involve a significant increase in individual or cumulative occupational radiation exposure.Accordingly, the proposed change meets the eligibility criteria for categorical exclusion set forth in 10CFR 51.22(c)(9) and therefore, per 10CFR 51.22(b), an environmental assessment of the change is not required.
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| ~Page Fqur RE(VEST FOR AHENDHENT TO TECHNICAL SPECIFICATION 4.6.6.l.b.3 CONTAINHENT ATHOSPHERE CONTROL This Technical Specification change has been reviewed and approved by the WNP-2 Plant Operations Committee (POC)and the Supply System Corporate Nuclear Safety Review Board (CNSRB).In accordance with 10CFR 50.91, the State of Washington has been provided a copy of this letter.Sincerely, G.C.Sp ensen, Manager Regulatory Programs (Hail Drop 280)AGH/bI<Attachments CC: JB Hartin-NRC RV NS Reynolds-Winston 8 Strawn WH Dean-NRC DL Williams-BPA/399 NRC Site Inspector-901A STATE OF WASHINGTON)
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| )COUNTY OF BENTON
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| ==Subject:== | | ==Subject:== |
| Primar Containment Atmos here Control I.G.C.SORENSEN, being duly sworn, subscribe to and say that I am the Manager, Regulatory Programs for the WASHINGTON PUBLIC POWER SUPPLY SYSTEM, the applicant herein;that I have the full authority to execute this oath;that I have reviewed the foregoing; and that to the best of my knowledge, information, and belief the statements made in it are true.GATE Pg,c/c'992 G.C.So ensen, Manager Regulatory Programs On this date personally appeared before me G.C.SORENSEN, to me'nown to be the individual who executed the foregoing instrument, and acknowledged that he signed the same as his free act and deed for the uses and purposes herein mentioned. | | Primar Containment Atmos here Control |
| GIVEN under my hand and seal this~day of 1992.No y Public in and for the STATE OF WASHINGTON Residing at Kennewick Washin ton Hy Commission Expires A ril 28 1994~(k" 4~I.,r | | ) |
| ~y r,''P lg}} | | COUNTY OF BENTON I. G. C. SORENSEN, being duly sworn, subscribe to and say that I am the Manager, Regulatory Programs for the WASHINGTON PUBLIC POWER SUPPLY SYSTEM, the applicant herein; that I have the full authority to execute this oath; that I have reviewed the foregoing; and that to the best of my knowledge, information, and belief the statements made in it are true. |
| | GATE Pg,c/c'992 G. C. So ensen, Manager Regulatory Programs On this date personally appeared before me G. C. SORENSEN, to me'nown to be the individual who executed the foregoing instrument, and acknowledged that he signed the same as his free act and deed for the uses and purposes herein mentioned. |
| | GIVEN under my hand and seal this ~day of 1992. |
| | No y Public in and for the STATE OF WASHINGTON Residing at Kennewick Washin ton Hy Commission Expires A ril 28 1994 |
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Category:OPERATING LICENSES-APPLIATION TO AMEND-RENEW EXISTING
MONTHYEARML17284A9101999-10-13013 October 1999 Application for Amend to License NPF-21,revising TS 3.3.6.1, Table 3.3.6.1-1, Primary Containment Isolation Instrumentation. Footnote (D) Is Removed Since Both Inboard & Outboard Trip Sys Are Now Functional in All Modes ML17284A8501999-07-29029 July 1999 Application for Amend to License NPF-21,revising TS 3.4.9, RHR Shutdown Cooling Sys - Hot Shutdown. ML17284A8471999-07-29029 July 1999 Application for Amend to License NPF-21,revising Tech Specs SR 3.5.2.2, Condensate Storage Tank Water Level. ML17284A8441999-07-29029 July 1999 Application for Amend to License NPF-21,revising TS Table 3.3.5.1-1, ECCS Instrumentation Items 1.a,2.a,4.a & 5.a. ML17284A8431999-07-29029 July 1999 Application for Amend to License NPF-21,removing License Condition 2.C.(16),Attachment 2,Item 3(b) Re post-accident Neutron Flux Monitoring ML17284A8401999-07-29029 July 1999 Application for Amend to License NPF-21,amending Tech Specs SR 3.8.4.6 of TS 3.8.5, DC Sources - Operating & SR 3.8.5.1 of TS 3.8.5, DC Sources - Shutdown. ML17292B6891999-06-0303 June 1999 Application for Amend to License NPF-21,reflecting Change in Name of Washington Public Power Supply Sys to Energy Northwest.Marked-up Copy of Affected Pages of OL for Plant, Encl ML17292B6441999-04-20020 April 1999 Application for Amend to License NPF-21,revising TS 3.4.11 to Replace Existing Reactor Pressure Temp Limit Curves by 000630 ML17292B6321999-04-0707 April 1999 Application for Amend to License NPF-21,requesting Mod to MCPR Safety Limits by 990930 to Allow Continued Power Operation at Plant Following Restart from R-14 RFO ML17292B4861998-12-17017 December 1998 Application for Amend to License NPF-21,revising TS SR 3.8.1.8 to Allow for Capability to Manually Transfer Between Preferred & Alternate Offsite Power Sources During Modes 1 & 2 by 990125 ML17284A8071998-11-0909 November 1998 Supplemental Application for Amend to License NPF-21, Requesting Minor Wording Changes to Clarify Intent of Proposed New License Section 2.B.(6).Addl Info That Describes Physical Storage of Matls,Encl ML17284A7161998-08-0505 August 1998 Application for Amend to License NPF-21,modifying TS SR 3.8.4.7 to Allow Performance Discharge Test to Be Performed in Lieu of Battery Svc Test for Div 1 & 3,125 Vdc Batteries E-B1-1 & HPCS-B1-DG3 & Div 1,250 Vdc Battery E-B2-1 ML17284A7051998-07-17017 July 1998 Application for Exigent Amend to License NPF-21,modifying TS SR 3.8.4.7 to Allow Performance Discharge Test to Be Performed in Lieu of Battery Svc Test for Div 2,125 Vdc, Battery E-B1-2 ML17292B3401998-04-16016 April 1998 Application for Amend to License NPF-21,modifying Requirement That cold-worked Austenitic Stainless Steel Used in Newly Designed ECCS Pump Suction Strainers Must Have Yield Strength Not Greater than 90,000 Psi ML17292B1301997-12-0404 December 1997 Application for Amend to License NPF-21,modifying Min Critical Power Ratio Safety Limits by 980515 to Allow Continued Power Operation at WNP-2 Following Restart from R-13 Refueling Outage ML17292B0261997-08-14014 August 1997 Application for Amend to License NPF-21,modifying Inservice Testing Requirements Specified in TS 5.5.6 for Inboard Primary Containment Isolation Valve on Transvering in-core Probe (TIP) Sys Nitrogen Purge Line ML17292A9401997-07-16016 July 1997 Application for Amend to License NPF-21,adding New Min Reactor Vessel Pressure Versus Reactor Vessel Metal Temp (P/T) Curves,Applicable Up to 12 Efpys.Changes Support Vessel Leak Testing ML17292A8631997-05-20020 May 1997 Application for Amend to License NPF-21,requesting Mod of Minimum Critical Power Ratio Safety Limits by 970615 ML17292A7561997-03-22022 March 1997 Application for Amend to License NPF-21,modifying Response Time Testing Surveillance Requirements for RPS Instrumentation,Primary Containment Isolation Actuation Instrumentation & ECCS Actuation Instrumentation ML17292A5491996-10-15015 October 1996 Application for Amend to License NPF-21 to Modify TS for Secondary Containment & Standby Gas Treatment Sys to Reflect Revised Secondary Containment Drawdown & post-accident Analyses Results.Affidavit,Encl ML17292A5381996-10-10010 October 1996 Application for Amend to License NPF-21,requesting Addition of Section 2B(6) Re Allowance of Storage of Byproduct, Source & Special Nuclear Materials ML17292A4081996-08-0909 August 1996 Requests Amend to License NPF-21,revising TS Section 6.3 Re Unit Staff Qualifications,By Changing Operations Manager Qualification Requirements Associated W/Operations Knowledge from Meeting Ansi/Ans N18.1-1971 GO2-96-089, Application for Amend to License NPF-21,modifying TS to Support Cycle 12,scheduled to Begin Subsequent to Spring 1996 Outage1996-04-24024 April 1996 Application for Amend to License NPF-21,modifying TS to Support Cycle 12,scheduled to Begin Subsequent to Spring 1996 Outage ML17291B2781996-03-19019 March 1996 Application for Amend to License NPF-21,revising Containment Leakage Testing ML17291B2071996-01-19019 January 1996 Application for Amend to License NPF-21 Re Primary Containment Leakage Testing GO2-95-265, Application for Amend to License NPF-21,revising TS to Be Consistent w/NUREG-1434, STS GE Plants,Bwr 6, Including Improved TS Submittal,Consisting of Application of Selection Criteria,Ts,Comparison Document & NSHC1995-12-0808 December 1995 Application for Amend to License NPF-21,revising TS to Be Consistent w/NUREG-1434, STS GE Plants,Bwr 6, Including Improved TS Submittal,Consisting of Application of Selection Criteria,Ts,Comparison Document & NSHC ML17291B0921995-10-26026 October 1995 Application for Amend to License NPF-21,revising TS to Reflect Replacement of Existing Reactor Recirculation Flow Control Sys W/Adjustable Speed Drive Sys ML17291A8421995-06-0606 June 1995 Application for Amend to License NPF-21,changing TS 6.0, Administrative Controls by Revising Assistant Managing Director,Operations & Plant Manager Position Titles ML17291A8381995-06-0606 June 1995 Application for Amend to License NPF-21,modifying Index of TS by Deleting Ref to Bases Pages.Future Changes to Bases Info Will Be Evaluated Per 10CFR50.59 ML17291A8321995-06-0606 June 1995 Application for Amend to License NPF-21,modifying TS 6.9.3.2 by Adding Re to Three TRs Describing Analytical Methods That May Be Used in Determining Reactor Core Operating Limits for Reload Licensing Applications,Consistent W/Gl 88-16 ML17291A7551995-04-25025 April 1995 Application for Amend to License NPF-21,adding RWCU Sys High Blowdown Containment Isolation Trip Function & Associated LCO & SRs to Tables 3.3.2-1,3.3.2-2 & 4.3.2.1-1 ML17291A4791994-10-31031 October 1994 Application for Amend to License NPF-21,revising TSs to Relocate Safety/Relief Valve Position Indication Instrumentation Requirements ML17291A4741994-10-31031 October 1994 Application for Amend to License NPF-21,revising TS 3/4.1.3.1, Reactivity Control Sys. ML17291A4201994-09-26026 September 1994 Suppl to 930709 Application for Amend to License NPF-21 Re Increase in Power Operation,Changing Power/Flow Maps in TS 3/4.2.6,3/4.2.7,3/4.2.8 & 3/4.4.1 & Bases to Reflect Use of Siemens Power Corp Staif Code for Stability Analysis ML17291A3941994-09-18018 September 1994 Application for Amend to License NPF-21,changing TS Table 3.6.3-1 Re Primary Containment Isolation Valve Requirements ML17291A3171994-08-0808 August 1994 Application for Amend to License NPF-21,amending TS 4.0.5, Surveillance Requirements for Inservice Insp & Testing Program. ML17291A2151994-07-12012 July 1994 Application for Amend to License NPF-21,requesting Amend to Ts,Relocating TS Table for Instrument Response Time Limits ML17291A2201994-07-0808 July 1994 Application for Amend to License NPF-21,revising TS W/Regard to Control Rod Scram Insertion Testing Under Emergency Circumstances ML17290B1711994-05-0606 May 1994 Application for Amend to License NPF-21,revising TSs 3/4.3.7.5,3/4.4.2 & 3/4.5.1 for Main Steam Relief Valve Position Indication ML17290B1551994-05-0505 May 1994 Application for Amend to License NPF-21,requesting Mod of Three Equipment Piece Numbers Included in Table 3.6.3-1, Primary Containment Isolation Valves. ML17290A9631994-02-17017 February 1994 Application for Amend to License NPF-21,revising TS to Support Hydrostatic Testing ML17290A9601994-02-17017 February 1994 Application for Amend to License NPF-21,revising TS Section 6.0, Administrative Controls, Including Changing Reporting Relationship for QA Functions in Section 6.2.1.e of TS from Managing Director to Assistant Managing Director,Operations ML17290A9551994-02-0808 February 1994 Application for Amend to License NPF-21,consisting of Changes to TS Table 3.6.3-1,for RCIC-V-8,increasing Stroke Time from 13 Seconds to 26 Seconds & Deleting Note (J) Reference from RCIC-V-8 & RCIC-V-63 ML17290A9031994-01-13013 January 1994 Application for Amend to License NPF-21,requesting Continued Plant Operation W/Eccs Functional,But Not in Strict Compliance W/Requirements for Demonstrating That Response Time within Limits of TS 3/4.3.3, ECCS Instrumentation. ML17290A8961994-01-0606 January 1994 Application for Amend to License NPF-21,requesting Changes to TS to Clarify Instrumentation Testing Requirements ML17290A8781994-01-0606 January 1994 Application for Amend to License NPF-21,requesting Rev to TS to Relocate Requirements for Seismic Monitoring Instrumentation to FSAR & Plant Procedures ML17290A8921994-01-0606 January 1994 Suppl to 930709 Application for Amend to License NPF-21, Increasing Licensed Power Level from 3,323 Mwt to 3,486 Mwt W/Extended Load Line Limit & Changing SRV Setpoint Tolerance to Include Changes to TS Paragraph 6.9.3.2 ML17290A8391993-12-20020 December 1993 Application for Amend to License NPF-21,revising TS 3/4.6.1.8, Drywell & Suppression Chamber Purge Sys. ML17290A8181993-12-0606 December 1993 Application for Amend to License NPF-21,requesting TS Surveillance Requirement 4.6.6.1.b.3 Be Revised to Provide Appropriate Acceptance Criteria for Demonstrating Operability of Primary Containment Hydrogen Recombiner Sys ML17290A8221993-12-0606 December 1993 Application for Amend to License NPF-21,adding Footnote to TS Table 4.3.7.5-1, Accident Monitoring Instrumentation Srs, Exempting Channel Calibr of Safety/Relief Valve Position Indicators from Spec 4.0.4 for 24 H 1999-07-29
[Table view] Category:TEXT-LICENSE APPLICATIONS & PERMITS
MONTHYEARML17284A9101999-10-13013 October 1999 Application for Amend to License NPF-21,revising TS 3.3.6.1, Table 3.3.6.1-1, Primary Containment Isolation Instrumentation. Footnote (D) Is Removed Since Both Inboard & Outboard Trip Sys Are Now Functional in All Modes ML17284A8501999-07-29029 July 1999 Application for Amend to License NPF-21,revising TS 3.4.9, RHR Shutdown Cooling Sys - Hot Shutdown. ML17284A8471999-07-29029 July 1999 Application for Amend to License NPF-21,revising Tech Specs SR 3.5.2.2, Condensate Storage Tank Water Level. ML17284A8441999-07-29029 July 1999 Application for Amend to License NPF-21,revising TS Table 3.3.5.1-1, ECCS Instrumentation Items 1.a,2.a,4.a & 5.a. ML17284A8431999-07-29029 July 1999 Application for Amend to License NPF-21,removing License Condition 2.C.(16),Attachment 2,Item 3(b) Re post-accident Neutron Flux Monitoring ML17284A8401999-07-29029 July 1999 Application for Amend to License NPF-21,amending Tech Specs SR 3.8.4.6 of TS 3.8.5, DC Sources - Operating & SR 3.8.5.1 of TS 3.8.5, DC Sources - Shutdown. ML17292B6891999-06-0303 June 1999 Application for Amend to License NPF-21,reflecting Change in Name of Washington Public Power Supply Sys to Energy Northwest.Marked-up Copy of Affected Pages of OL for Plant, Encl ML17292B6441999-04-20020 April 1999 Application for Amend to License NPF-21,revising TS 3.4.11 to Replace Existing Reactor Pressure Temp Limit Curves by 000630 ML17292B6321999-04-0707 April 1999 Application for Amend to License NPF-21,requesting Mod to MCPR Safety Limits by 990930 to Allow Continued Power Operation at Plant Following Restart from R-14 RFO ML17292B4861998-12-17017 December 1998 Application for Amend to License NPF-21,revising TS SR 3.8.1.8 to Allow for Capability to Manually Transfer Between Preferred & Alternate Offsite Power Sources During Modes 1 & 2 by 990125 ML17284A8071998-11-0909 November 1998 Supplemental Application for Amend to License NPF-21, Requesting Minor Wording Changes to Clarify Intent of Proposed New License Section 2.B.(6).Addl Info That Describes Physical Storage of Matls,Encl ML17284A7161998-08-0505 August 1998 Application for Amend to License NPF-21,modifying TS SR 3.8.4.7 to Allow Performance Discharge Test to Be Performed in Lieu of Battery Svc Test for Div 1 & 3,125 Vdc Batteries E-B1-1 & HPCS-B1-DG3 & Div 1,250 Vdc Battery E-B2-1 ML17284A7051998-07-17017 July 1998 Application for Exigent Amend to License NPF-21,modifying TS SR 3.8.4.7 to Allow Performance Discharge Test to Be Performed in Lieu of Battery Svc Test for Div 2,125 Vdc, Battery E-B1-2 ML17292B3401998-04-16016 April 1998 Application for Amend to License NPF-21,modifying Requirement That cold-worked Austenitic Stainless Steel Used in Newly Designed ECCS Pump Suction Strainers Must Have Yield Strength Not Greater than 90,000 Psi ML17292B1301997-12-0404 December 1997 Application for Amend to License NPF-21,modifying Min Critical Power Ratio Safety Limits by 980515 to Allow Continued Power Operation at WNP-2 Following Restart from R-13 Refueling Outage ML17292B0261997-08-14014 August 1997 Application for Amend to License NPF-21,modifying Inservice Testing Requirements Specified in TS 5.5.6 for Inboard Primary Containment Isolation Valve on Transvering in-core Probe (TIP) Sys Nitrogen Purge Line ML17292A9401997-07-16016 July 1997 Application for Amend to License NPF-21,adding New Min Reactor Vessel Pressure Versus Reactor Vessel Metal Temp (P/T) Curves,Applicable Up to 12 Efpys.Changes Support Vessel Leak Testing ML17292A8631997-05-20020 May 1997 Application for Amend to License NPF-21,requesting Mod of Minimum Critical Power Ratio Safety Limits by 970615 ML17292A7561997-03-22022 March 1997 Application for Amend to License NPF-21,modifying Response Time Testing Surveillance Requirements for RPS Instrumentation,Primary Containment Isolation Actuation Instrumentation & ECCS Actuation Instrumentation ML17292A5491996-10-15015 October 1996 Application for Amend to License NPF-21 to Modify TS for Secondary Containment & Standby Gas Treatment Sys to Reflect Revised Secondary Containment Drawdown & post-accident Analyses Results.Affidavit,Encl ML17292A5381996-10-10010 October 1996 Application for Amend to License NPF-21,requesting Addition of Section 2B(6) Re Allowance of Storage of Byproduct, Source & Special Nuclear Materials ML17292A4081996-08-0909 August 1996 Requests Amend to License NPF-21,revising TS Section 6.3 Re Unit Staff Qualifications,By Changing Operations Manager Qualification Requirements Associated W/Operations Knowledge from Meeting Ansi/Ans N18.1-1971 GO2-96-089, Application for Amend to License NPF-21,modifying TS to Support Cycle 12,scheduled to Begin Subsequent to Spring 1996 Outage1996-04-24024 April 1996 Application for Amend to License NPF-21,modifying TS to Support Cycle 12,scheduled to Begin Subsequent to Spring 1996 Outage ML17291B2781996-03-19019 March 1996 Application for Amend to License NPF-21,revising Containment Leakage Testing ML17291B2071996-01-19019 January 1996 Application for Amend to License NPF-21 Re Primary Containment Leakage Testing GO2-95-265, Application for Amend to License NPF-21,revising TS to Be Consistent w/NUREG-1434, STS GE Plants,Bwr 6, Including Improved TS Submittal,Consisting of Application of Selection Criteria,Ts,Comparison Document & NSHC1995-12-0808 December 1995 Application for Amend to License NPF-21,revising TS to Be Consistent w/NUREG-1434, STS GE Plants,Bwr 6, Including Improved TS Submittal,Consisting of Application of Selection Criteria,Ts,Comparison Document & NSHC ML17291B0921995-10-26026 October 1995 Application for Amend to License NPF-21,revising TS to Reflect Replacement of Existing Reactor Recirculation Flow Control Sys W/Adjustable Speed Drive Sys ML17291A8421995-06-0606 June 1995 Application for Amend to License NPF-21,changing TS 6.0, Administrative Controls by Revising Assistant Managing Director,Operations & Plant Manager Position Titles ML17291A8381995-06-0606 June 1995 Application for Amend to License NPF-21,modifying Index of TS by Deleting Ref to Bases Pages.Future Changes to Bases Info Will Be Evaluated Per 10CFR50.59 ML17291A8321995-06-0606 June 1995 Application for Amend to License NPF-21,modifying TS 6.9.3.2 by Adding Re to Three TRs Describing Analytical Methods That May Be Used in Determining Reactor Core Operating Limits for Reload Licensing Applications,Consistent W/Gl 88-16 ML17291A7551995-04-25025 April 1995 Application for Amend to License NPF-21,adding RWCU Sys High Blowdown Containment Isolation Trip Function & Associated LCO & SRs to Tables 3.3.2-1,3.3.2-2 & 4.3.2.1-1 ML17291A4791994-10-31031 October 1994 Application for Amend to License NPF-21,revising TSs to Relocate Safety/Relief Valve Position Indication Instrumentation Requirements ML17291A4741994-10-31031 October 1994 Application for Amend to License NPF-21,revising TS 3/4.1.3.1, Reactivity Control Sys. ML17291A4201994-09-26026 September 1994 Suppl to 930709 Application for Amend to License NPF-21 Re Increase in Power Operation,Changing Power/Flow Maps in TS 3/4.2.6,3/4.2.7,3/4.2.8 & 3/4.4.1 & Bases to Reflect Use of Siemens Power Corp Staif Code for Stability Analysis ML17291A3941994-09-18018 September 1994 Application for Amend to License NPF-21,changing TS Table 3.6.3-1 Re Primary Containment Isolation Valve Requirements ML17291A3171994-08-0808 August 1994 Application for Amend to License NPF-21,amending TS 4.0.5, Surveillance Requirements for Inservice Insp & Testing Program. ML17291A2151994-07-12012 July 1994 Application for Amend to License NPF-21,requesting Amend to Ts,Relocating TS Table for Instrument Response Time Limits ML17291A2201994-07-0808 July 1994 Application for Amend to License NPF-21,revising TS W/Regard to Control Rod Scram Insertion Testing Under Emergency Circumstances ML17290B1711994-05-0606 May 1994 Application for Amend to License NPF-21,revising TSs 3/4.3.7.5,3/4.4.2 & 3/4.5.1 for Main Steam Relief Valve Position Indication ML17290B1551994-05-0505 May 1994 Application for Amend to License NPF-21,requesting Mod of Three Equipment Piece Numbers Included in Table 3.6.3-1, Primary Containment Isolation Valves. ML17290A9631994-02-17017 February 1994 Application for Amend to License NPF-21,revising TS to Support Hydrostatic Testing ML17290A9601994-02-17017 February 1994 Application for Amend to License NPF-21,revising TS Section 6.0, Administrative Controls, Including Changing Reporting Relationship for QA Functions in Section 6.2.1.e of TS from Managing Director to Assistant Managing Director,Operations ML17290A9551994-02-0808 February 1994 Application for Amend to License NPF-21,consisting of Changes to TS Table 3.6.3-1,for RCIC-V-8,increasing Stroke Time from 13 Seconds to 26 Seconds & Deleting Note (J) Reference from RCIC-V-8 & RCIC-V-63 ML17290A9031994-01-13013 January 1994 Application for Amend to License NPF-21,requesting Continued Plant Operation W/Eccs Functional,But Not in Strict Compliance W/Requirements for Demonstrating That Response Time within Limits of TS 3/4.3.3, ECCS Instrumentation. ML17290A8961994-01-0606 January 1994 Application for Amend to License NPF-21,requesting Changes to TS to Clarify Instrumentation Testing Requirements ML17290A8781994-01-0606 January 1994 Application for Amend to License NPF-21,requesting Rev to TS to Relocate Requirements for Seismic Monitoring Instrumentation to FSAR & Plant Procedures ML17290A8921994-01-0606 January 1994 Suppl to 930709 Application for Amend to License NPF-21, Increasing Licensed Power Level from 3,323 Mwt to 3,486 Mwt W/Extended Load Line Limit & Changing SRV Setpoint Tolerance to Include Changes to TS Paragraph 6.9.3.2 ML17290A8391993-12-20020 December 1993 Application for Amend to License NPF-21,revising TS 3/4.6.1.8, Drywell & Suppression Chamber Purge Sys. ML17290A8181993-12-0606 December 1993 Application for Amend to License NPF-21,requesting TS Surveillance Requirement 4.6.6.1.b.3 Be Revised to Provide Appropriate Acceptance Criteria for Demonstrating Operability of Primary Containment Hydrogen Recombiner Sys ML17290A8221993-12-0606 December 1993 Application for Amend to License NPF-21,adding Footnote to TS Table 4.3.7.5-1, Accident Monitoring Instrumentation Srs, Exempting Channel Calibr of Safety/Relief Valve Position Indicators from Spec 4.0.4 for 24 H 1999-07-29
[Table view] |
Text
ACCESSION NBR:9203250293 t
ACCELERATED DISTRIBUTION DEMONSTPATION SYSTEM DOC.DATE: 92/03/18 t
REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDE)
NOTARIZED: YES DOCKET FACIL:50-,397 WPPSS Nuclear Project, Unit 2, Washington Public Powe 05000397 AUTH. NAME AUTHOR AFFILIATION SORENSEN,G.C. Washington Public Power Supply System RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)
SUBJECT:
Application for amend to License NPF-21,revising TS 4.6.6. l.b.3 re primary containment atmosphere control.
DISTRIBUTION CODE: AOOZD TITLE: OR COPIES RECEIVED:LTR Submittal: General Distribution J ENCL / SIZE:
NOTES:
RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD5 LA 1 1 PD5 PD 1 1 ENG,P.L. 2 2 INTERNAL: ACRS 6 6 NRR/DET/ECMB 7D 1 1 NRR/DET/ESGB 1 1 NRR/DOEA/OTSB11 1 1 NRR/DST 8E2 1 1 NRR/DST/SELB 7E 1 1 NRR/DST/S I CB8H7 1 1 NRR/DST/SRXB 8E 1 1 NUDOCS-ABSTRACT 1 1 OC/LEMB 1 0 OGC/HDS1 1 0 RES FILE Ol 1 1 RES/DSIR/EIB 1 1 EXTERNAL: NRC PDR 1 1 NSIC 1 1 NOTE TO ALL "RIDS" RECIPIENTS:
PLEASE HELP US TO REDUCE WASTE! CONTACT THE DOCUMENT CONTROL DESK, ROOM P 1-37 (EXT. 20079) TO ELIMINATEYOUR NAME FROM DISI'RIBUTION LISES FOR DOCUMENTS YOU DON'T NEED!
TOTAL NUMBER OF COPIES REQUIRED: LTTR 24 ENCL 22
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WASHINGTON PUBLIC POWER SUPPLY SYSTEM P.O. Bm 968 ~ 3000 George Wasbtngton Way ~ Richland, Wasbtngton 99352-0968 ~ (509) 372-5000 March 18, 1992 G02-92-064 Docket No. 50-397 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555 Gentlemen:
Subject:
NUCLEAR PLANT NO. 2, OPERATING LICENSE NPF-21 REQUEST FOR AMENDMENT TO TECHNICAL SPECIFICATION 4.6.6. l.b.3 PRIMARY CONTAINMENT ATMOSPHERE CONTROL
Reference:
Letter, G02-92-061, JW Baker (SS) to JB Hartin (NRC),
"Request for Waiver of Compliance Relative to Technical Specification 4.6.6. l.b.3 Containment Atmosphere Control",
dated March 13, 1992 In accordance with the Code of Federal Regulations, Title 10, Parts 50.90, 2. 101, and 50.91(a)(6), the Supply System hereby submits a request for amendment to the WNP-2 Technical Specifications on an exigent basis as provided for in the regulations. Specifically, the Supply System is requesting that the Technical Specification Surveillance Requirement 4.6.6. l.b.3 be revised to provide a more appropriate acceptance criterion for demonstrating operability of the primary containment hydrogen recombiner systems.
On March 13, 1992, by the Reference letter, the Supply System requested relief from the Technical Specification Containment Atmosphere Control (CAC) surveil-lance requirement that upon introduction of a 1% by volume hydrogen in a 140-180 scfm stream containing at least 1% by volume oxygen, that the catalyst bed temperature rises in excess of 120 degrees F within 20 minutes.
The reason for requesting the waiver was that as a result of intensive review of the operability of the CAC it had become evident that the'acceptance criterion of the Technical Specification was very dependent on the analytical methods of calculating the input parameters and measurement of performance indicators; hydrogen concentration, process flows and temperatures. Depending on the methods of calculating the input parameters, the temperature rise experienced can vary significantly. The review had led to refinements in input parameter determina-tion. As a result, during this review the temperature rise acceptance criterion method was identified as suspect. In addition to the analytical methods used to 9203250293 9203i8 PDR~ ADOCK 05000397 P PDR
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Page Tag RE(VEST FOR AMENDMENT TO TECHNICAL SPECIFICATION 4.6.6.l.b.3 CONTAINMENT ATMOSPHERE CONTROL determine the input parameters, other factors such as: heat removed by the gas flow; heat capacity of the catalyst bed and the vessel; losses through vessel insulation, supports, and piping; time lag and heat loss caused by temperature sensors and uncertainties in flow determination during testing, all led to a conclusion that the present temperature rise acceptance criterion was not, by itself, an accurate reflection of catalyst operability. Test results showed variations primarily are a result of the ability to set initial conditions, input parameters, and instrument uncertainty.
As a result of an internal safety system functional inspection self assessment, it was concluded that sampling of the influent and effluent gases would be a more direct indication of catalyst efficiency. This was confirmed with the assistance of industry experts in catalyst bed design and operation. An appropriate acceptance criterion would be the sampling of the effluent gas stream for hydrogen concentration for a defined input volume percent of hydrogen. A sample retaining less than 25 parts per million by volume (ppmV) hydrogen (called reactor leakage in industry terminology) after passing through the catalyst bed would indicate acceptable recombiner operation for a feed of at least 1% hydrogen by volume. The Reference letter summarized sampling and testing performed on March 12 and 13 that showed 6 ppmV hydrogen concentration in the effluent stream of both recombiner trains. It was these test results that led the Supply System to conclude that the catalyst efficiency was acceptable and capable of performing in support of plant operation and that a waiver request was appropriate.
The Supply System, by this submittal, is requesting that the Technical Specification 4.6.6. l.b.3 be revised to provide for the demonstration of the operability of the CAC system by sampling of the effluent stream for a hydrogen concentration of less than 25 ppmV for the introduction of at least 1% by volume hydrogen into the catalyst bed preheated to a temperature not to exceed 300'F in lieu of the existing reference to catalyst bed temperature rise and flow. This submittal proposes the use of 25 ppmV as the acceptance criterion rather than the 10 ppmV mentioned in the Reference letter which was the basis for requesting the waiver. The 25 ppmV value is believed to be an acceptable indication of recombiner operation while leaving room for the inaccuracy in the measurement techniques. The catalyst expert mentioned above has stated that 25 ppmV would be an acceptable indication of catalyst performance as it indicates a minimum efficiency of 99.75% efficiency for a hydrogen feed of at least 1%. An effluent hydrogen concentration of 100 ppmV would indicate a possible problem with the catalyst and would require further investigation.
Changes to Bases 3/4.6.6 are provided to support this change request and to reflect the oxygen control function of the CAC system resulting from the change to an inerted containment. WNP-2 design basis for combustible gas control was changed from hydrogen control with a non-inerted containment to oxygen control with a nitrogen inerted containment during plant licensing.
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RE/VEST FOR AMENDMENT TO TECHNICAL SPECIFICATION 4.6.6.1.b.3 CONTAINMENT ATMOSPHERE CONTROL The Supply System con'eludes that using the "less than 25 ppmV hydrogen concentra-tion" acceptance criterion does not involve a significant hazards consideration for the following reasons:
~ It would not involve a significant increase in the probability or consequences of an accident. The recombiners are provided as an accident mitigating feature and, as such, do not have potential to cause an accident. In addition, the consequences of accidents are not increased.
The 25 ppmV acceptance criterion more adequately demonstrates operability of the Containment Atmosphere Control system as it is a more direct indication of recombiner operational efficiency and is not dependent on analytical methods of determining input parameters or temperature losses and temperature measurement inaccuracies. Hence, there is no increase in the consequences of an accident introduced by this request as the proposed testing method is superior to that currently in the Technical Specifica-tion as it better quantifies the conversion capability of the catalyst.
The existing testing method only confirms an efficiency of approximately 80% while the proposed method confirms a minimum efficiency of 99.75% for the minimum 1% hydrogen feed.
It would not create the possibility of a new or different kind of accident. No new methods of system operation are introduced by this request. Accordingly, no new or different kind of accident is credible as' result of this request.
It would not create a significant decrease in a margin of safety. The proposed testing provides a more direct and rigorous acceptance criterion.
Sampling of the feed and product gases will be a more reliable indicator of catalyst performance thus assuring that the margin to unacceptable oxygen level is maintained. Limiting the catalyst bed preheat temperature to less than that expected for a LOCA condition provides additional insurance that the margin of safety will be maintained. Hence, this request does not represent a decrease in a margin of safety.
As discussed above, the Supply System considers that this change does not involve a significant hazards consideration, nor is there a potential for significant change in the types or significant increase in the amount of any effluents that may be released offsite, nor does it involve a significant increase in individual or cumulative occupational radiation exposure. Accordingly, the proposed change meets the eligibility criteria for categorical exclusion set forth in 10CFR 51.22(c)(9) and therefore, per 10CFR 51.22(b), an environmental assessment of the change is not required.
~
Page Fqur RE(VEST FOR AHENDHENT TO TECHNICAL SPECIFICATION 4.6.6.l.b.3 CONTAINHENT ATHOSPHERE CONTROL This Technical Specification change has been reviewed and approved by the WNP-2 Plant Operations Committee (POC) and the Supply System Corporate Nuclear Safety Review Board (CNSRB). In accordance with 10CFR 50.91, the State of Washington has been provided a copy of this letter.
Sincerely, G. C. Sp ensen, Manager Regulatory Programs (Hail Drop 280)
AGH/bI<
Attachments CC: JB Hartin - NRC RV NS Reynolds - Winston 8 Strawn WH Dean - NRC DL Williams - BPA/399 NRC Site Inspector - 901A
STATE OF WASHINGTON)
Subject:
Primar Containment Atmos here Control
)
COUNTY OF BENTON I. G. C. SORENSEN, being duly sworn, subscribe to and say that I am the Manager, Regulatory Programs for the WASHINGTON PUBLIC POWER SUPPLY SYSTEM, the applicant herein; that I have the full authority to execute this oath; that I have reviewed the foregoing; and that to the best of my knowledge, information, and belief the statements made in it are true.
GATE Pg,c/c'992 G. C. So ensen, Manager Regulatory Programs On this date personally appeared before me G. C. SORENSEN, to me'nown to be the individual who executed the foregoing instrument, and acknowledged that he signed the same as his free act and deed for the uses and purposes herein mentioned.
GIVEN under my hand and seal this ~day of 1992.
No y Public in and for the STATE OF WASHINGTON Residing at Kennewick Washin ton Hy Commission Expires A ril 28 1994
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