ML17265A664
| ML17265A664 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 05/25/1999 |
| From: | Mecredy R ROCHESTER GAS & ELECTRIC CORP. |
| To: | Vissing G NRC (Affiliation Not Assigned), NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| REF-GTECI-A-46, REF-GTECI-SC, TASK-A-46, TASK-OR NUDOCS 9906040167 | |
| Download: ML17265A664 (20) | |
Text
REGULA'1 Y INFORMATION DISTRIBUTIO YSTEM (RIDS)
ACC:)RBZON NBR:9906040167 DOC.DATE: 99/05/25 NOTARIZED: NO
,FAdpL'.50-244 Robert Emmet Ginna Nuclear Plant, Unit 1, Rochester G DOCKET 05000244 I
AUTH".Q~E* AUTHOR AFFILIATION NCREDY,IR.C,. Rochester Gas 6 Electric Corp.
RECIK.NAME RECIPIENT AFFILIATION VXSSING,G..
SUBJECT:
Forwards addi info on use of GIP method A for RE Ginna Nuclear Power Plant. Copy of RE Ginna Station USX A-46 C "Outlier Resolution Table" as recpxested.
A DXSTRIBUTION CODE: A025D COPIES RECEIVED:LTR ENCL SIZE:
TITLE: Seismic Qualification of Ecpxipment in Operating Plants - A GL-87 NOTES:License Exp 'date in accordance with 10CFR2,2.109(9/19/72) . 05000244 E RECIPIENT, COPIES RECXPIENT COPIES ID CODE/NAME LTTR ENCL XD CODE/NAME LTTR ENCL OGC/HDS3 1 1 LPD1-1 PD 1 1 VXSSING,G. 1 1 XNTERN . ILE 1 1 NRR/DE 1 1 NRR/DE/EEIB 1 1 NRR/DE/EMEB 2 .2 NRR/DIPM/IOLB 1 1 NRR/DLPM/LPD1 1 1 NRR/DSSA/SRXB 1 1 EXTERNAL: NRC PDR 1 1 D
C U
NOTE TO ALL "RIDS" RECIPIENTS:
PLEASE HELP US TO REDUCE WASTE.'TO HAVE YOUR NAME OR ORGANIZATION REMOVED FROM DISTRIBUTION OR REDUCE THE NUMBER OF COPIES RECEIVED BY YOU OR YOUR ORGANIZATION, CONTACT LISTS THE DOCUMENT CONTROL DESK (DCD) ON EXTENSION 415-2083 TOTAL NUMBER OF COPIES REQUIRED: LTTR 12 ENCL 12
I 4HD I I ROCHESTER GAS ANDELECTRIC CORPORATION ~ 89 EASTAVEhlUE, ROCHESTER, M Y Id6d9-0001 AREA CODE716 SX6-27K RO8ERT C. MECREDY Vice President Nvcteor Operotions May 25, 1999 U. S. Nuclear Regulatory Commission Document Control Desk Attn: Guy Vissing Project Directorate I-1 Washington, D.C. 20555-0001
Subject:
Additional Information on Use of GIP Method A R.E. Ginna Nuclear Power Plant Docket No. 50/244
References:
A. Letter from Guy S. Vissing (NRC) to Dr.
Robert C. Mecredy (RG&E), dated April 6, 1998, "Request for Additional Information on the resolution of Unresolved Safety Issue (USI) A-46 B. Letter from Robert C. Mecredy (RG&E) to Document Control Desk (NRC), dated May 27, 1998: "Response to NRC Request for Additional Information (RAI) on the resolution of Unresolved Safety Issue (USI) A-46".
C. Letter from Guy S. Vissing (NRC) to Dr. Robert C. Mecredy, dated December 3, 1998, "Second Request for Additional Information".
D. Letter from Robert C. Mecredy (RG&E) to Document Control Desk (NRC), dated February 2, 1999, "Response to, Second Request for Additional Information" USI A-46
Dear Mr. Vissing:
Recent telephone conversations between the NRC and RG&E discussed concerns regarding high In-structure Response Spectra shown in Rochester Gas & Electric's January 1997 USI-A46 submittal.
Rochester Gas & Electric provided explanations in responses to the NRC RAI's (Ref. A & C) on 5/27/98 and 2/2/99 (Ref. B & D) . These discussions focused on whether Ginna structures, such as the diesel generator building, could be considered "typical nuclear structures". RG&E agreed to supplement our February 1999 submittal regarding qualitative explanations of seismic response spectra margins with some quantitative examples. Enclosed is a comparison 9906040167 990525 PDR ADQCK 05000244 P PDR s ~
evaluation of overall seismic margins between Median Centered Analysis and Design Basis Analysis for nuclear power plant structures at other facilities similar in construction, building frequency and damping to those at Ginna Station. This information has been developed and compiled by EQE International, Inc. and is meant to demonstrate that factors of safety in original design basis analysis can be shown to be in the range of 2.5 to 5.
RGEE believes that sufficient information and justification has been provided in order to allow closure of USI A-46.
In addition RG&E has enclosed a copy of R.E Ginna Station's USI A-46 "Outlier Resolution Table" as requested.
Very ruly yours, Robert CD Mec dy Enclosures xc Mr. Guy S. Vissing (mail stop 14B2)
Project Directorate I-1 Division of Reactor Projects- I/II Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington DC 20555 Regional Administrator, Region I U. S. Nuclear Regulatory Commission 475 Allendale road King of Prussia, PA 19406 U.S. NRC Ginna Senior Resident Inspector squg2.rai
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Figure 6: Plant B: Median Centered SSE ISRS X 10 (p 1. 0. el/ Ld o o.67. Cl u 0, 0. Oe2 0. 1 10 10 10 Freauency (Hx) Legend: Notes: Enveloped Zn-eennnn. Response Spectrum 5.0 0 Special Dashing accelerations in g's Reactor Building, USI-A46 Analysis External Shell, Elev. 317'
1 e Figure 7: Diablo Canyon (Plant C) Spectral Comparison 12
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OUTLIER TABLE INCLUDES A46, GROUP B EIN DESCRIPTION REQUIRED OUTLIER ISSUE INTERIM ACCEPTABILITY RESOLUTION RESOLUTION FUNCTION PLAN/SCHEDULE DOCUMENTS MCC Motor Control centers Distribute These MCC's are fker This caveat resulted from an SSRAP concern that there Finalize documentation of S8A Analysis S&A Cal.
MCCD C,D,Hand J power and mounted and are 15 deep. were no single section MCC's at data base sites less than capacity In 1997. 93C2769C022 Reviewed and MCCH circuit Per the GIP an MCC must be 18 deep that saw ground motion on the order of the Revised SEWS accepted.
MCCJ breakers 18 deep or be top braced. SQUG Reference Spectrum (0.5 g ZPA). Since then, the CATS R05824 9/30/98 Outller closed.
provide database has been expanded. Sufficient evidence is isolation. available to demonstrate capacity above 0.2 g. Ground spectra for MCC's low In buildings such as these.
MCCL Motor Control Centers Distribute A number of the anchors Anchorage calculations were performed using knockdown Verify embedment and bolt WO ¹'s Embedments MCCM L and M power and have significant exposed factors for low concrete strength, essential relays and tightness during 1997 refueling 19701247 and and torques circuit length, so the anchorage unknown anchor type. The reductions were 0.75 x 0.75 x outage. If necessary install 19701248 veriried acceptable.
breakers embedment may not meet 0.6 = 0.3 (base alhwable) and the result was a margin of modiTication during 1999 RFO. embedments and Updated SEWS provide GIP requirements 1.19 which is considerable considering the reduction taken torque. 3/17/98.
isolagon. to meet the GIP criteria, the embedment depth should be CATS R05825 Outller closed.
veriTied and a bolt tightness check made. The final report for EWR 2813 stats that the anchorage for MCCM has a factor of safety > 10.
52/BYA Reactor Trip Breakers Trip Reactor Block Wall Interaction The Reactor Trip breakers fail open (Reactor Trip).They Resolved Need letter justifying Documentation 52/BYB and Reactor Trip open on loss of DC power and loss of MG sets. No acceptance provided by 52/RTA Bypass Breakers credible failure mode exists for this scenario. (Dave Wilson/MBF) 12/7/98 Itr 52/RTB Wilson to Fitzsimmons Outller clo.
BUS 16 Bus 16 Switchgear Distribute Bus 16 is adjacent to cabinet Bus 16 contains essenual, chatter sensitive relays. The Bolt cabinets together during PCR ¹97435 Cabinets power and ARB1RC16. The clearance concern is that rack to rack impacts can cause relay 1997 refueling outage. DACE-97423 connected with circuit varies from 3/8 to almost nil chatter. It is not likely that potential Impacts between welded cgp breakers at exposed bolt heads. Bus these cabinets. The relay cabinet is mounted at the end of CATS R05826 angles. Install.
provide 16 contains essential relays BUS16. BUS16is1M long,58 deep,76 highand Complete 11/97.
isolation so this configuration is an weighs about 15000¹. The relay cabinet is 70 tall, 24 Updated SEWS interacgon outlier because of deep and long and weighs about 1000¹. The sviitchgear 3/17/98. Outlier the possible impact of the cabinet will not displace much at ail along its iong closed cabinet. dimension and the relay cabinet may impact it but with little effecL This is purely a SQUG concern and outside of the original design basis.
OUTLIER TABLE INCLUDES A46, GROUP B Rev. 4, 4/IS/99 EIN DESCRIPTION REQUIRED OUTLIER ISSUE INTERIM ACCEPTABILITY RESOLUTION RESOLUTION FUNCTION PLAN/SCHEDULE DOCUMENTS STATU 90/MCCC Current Umiting Must conduct Two issues, the SRT judged The latticed (similar to expanded metal) panels on the Perform additional analysis to SEA cahulathn No. Submitted CC F 90/MCCD Reactors current and the cabinets to be fairiy front and back of the cabinets require additional analysis determine capacity by end of 93C2769-C421 7/28/98. S&A provide fault flexibl (<8 Hz), therefore 1.5 to determine the bue capacity of the cabinets, or the 1997. If modification is Analysis current x BS vs. Fhor spectra was addition of stiffeners. The capacity may not quite meet the necessary install during 1999 complete.
limiting. used. The FRS exceeds 1.5 current Reg. Guide fhor spectra, but would easily meet RFO SEWS updated.
x BS. Also, the cabinet original design spectra. No structure is questionable due CATS R05827 modifications.
to the latticed panels on the Outlier closed front and back.
TE409A-1 RCS Loop A Hot Leg RCS Hot Leg Cables in BW trays Temperature indication is desired to monitor cool down Perform additional analysis to Resolution to Include DaveWilson Temperature Element Temperature rates and reactor core delta T's for natural circulation. determine capacity of bhck walls. taking manual reading PCN.
Indication Should hop A indication be lost, hop temperatures can be IPEEE analysis showed NR Th/I'C provides CR ER-SC.4 Rev. 4 obtained by manually reading the resistance of other additional capacity well above Indication hold at no signed 2/19/99 RTD's in the RCS loop. The process involves obtaining that reported during IE 80-11 had tave until ready to SSEL Rev. 1 the proper measuring device, lifting leads in cabinets in resolution. Procedure will be use RTD readings. = 4/23/99 No the relay room, taking resistance readings and converting finalized In 1997. If modiTications change SSEL - Add NR SEWS updates those to temperatures. Although this Is a fairly simple are necessary, they will be to SSEL required. CCVF procedure and has been performed in the past, it is not a performed during 1999 RFO. ERIC.4 Rev. 4 4/23/99 normally performed procedure. CATS R05828 SSEL Rev. 1 Outlier closed TE409B-1 RCS Loop B Cold Leg RCS Cold Leg Cables in BW Trays See TE409A-1 See TE409A-1 change SSEL - Add NR Dave Wilson Temperature Element Temperature CATS R05828 to SSEL, ERIC.4 Rev. PCN. SSE~
Indication 4 Rev.1, ER~~
Outller closed LT-504 S/G A Wide Range Required for Cables in BW Trays Other wide range level indication devices are available, Same as TE409A-1 Can use SAFW flow Dave Wilson Level Transmitter S/G A Level but they have power interdependencies that may make and pressurizer press SSEL Rev. 1 them susceptible to other single failures. Should it be CATS R05829 have already changed 4/23/99 necessary, S/G A viide range level can be obtained by FR's to alhw use Outlier closed manually reading the current loop associated with loop LT- SAFW Ihw is GIPed.
505. This involves obtaining the proper measuring Add SAFW Fhw to equIpment, lifting leads in a cabinet in the relay room, SSEL taking a current measurement and converting that to a SSEL Rev. 1 4/23/99 level reading.
Although the process is simple, it is not a normally performed procedure.
OUTLIER TABLE INCLUDES A46, GROUP B Rcv. 4, 4/I589 BTRYA Battery Racks A and 8 DC Power Cells lack dose fitting The battery racks meet the current design basis for A modification to meet GIP PCR I/97438 installed PCR 98486~
BTRYB spacers between ce! IS and the anchorage of the racks seismic loading in both horizontal directions. criteria Is In the design process and will be completed no later mods. 1997. Need new mod. for larger installed nei~
seismically for north-south loads does than the next refueling outage battedes. Buying qualified racks in not meet the GIP (1997). qualified racks; install In 1999. Saws requirements CATS R05830 99 RFO. wa.'s updated 4/99.
19702770, 19702771 Outller closed PT<68 S/G A Pressure S/G Pressure BW outlier Investigation of block walls for the IPEEE showed Same as TE<09A-1 DANE-994)41 qualiTied Wail seismicatty Transmitter additional margin above that evaluated during IE Bulletin the wall therefore qualitied by 80-11. This analysis shows that the walls are acceptable CATS R05831 removing the interacfion analysis. SEWS for the original design spectra and possibly for the current Qualify wall 971-14I concerns updated 4/99.
Reg. Guide spectra. Outller closed 32/DGA Westinghouse CRN-1 In DGAEC Demand > GERS for all The relays neet the demand based on the original ground Analyze cabinet to determine PCR ff974)31 Door stiffener Relay states spectra induding in cabinet amplification for all operating actual demand. If mod. required, mods. Installed states of the relays. Therefore they meet out current install In 1997 RFO. 11/97. Updated design basis. SEWS 11/98.
CATS R05832 Outller closed 32/DG8 Westinghouse CRN- In DGBEC Demand > GERS for all The relays meet the demand based on the original ground Analyze cabinet to determine PCR 97%31 Door sfiffener 1Relay states spectra, induding In cabinet amplification for all operating actual demand. If mod. req'd. mods. Instal states of the relays. Therefore they meet out current Install in 1997 RFO. 11/97. Upd design basis. SEWS 11/98.
CATS R05832 Outller dosed 42/3504A Westinghouse Size 2 In M@ Cabinet amplification Require further analysis to determine cabinet amplification. See Group 8 below wafi ts DA-CE-9H95 Walls seismic 42/3505A DC Motor Starter MS I V3504A and V3SOSA unknown, outlier if > 1.6 Valves are Group 8 outliers (bbck wall) see discussion for Group 8 below and in the SSEL Report seismic.
CATS R05836 W.O. 19801843 PCR 98422 Hot short issue still by analysis Outller closed KIX/DGA Allen Bradley In DGACP 8 No Data Need to Investigate either get data, test relays or replace Determine capacity and either PCR 97%32 Relays replaced K1X/DGB 200E0021A Relay DGBCP with relays of known ruggedness. accept or replace by the end of 11/97. Updated the 1997 RFO relay eval. Shts 3/1 7/98.
Outlier closed K4-A Potter Biumfield 6739- In DGACP 8 No Data Need to Investigate either get data, test relays or replace Determine capacity and either PCR 97%32 Relays replaced K4-8 83-A2 Relays DGBCP with relays of known ruggedness. accept or replace by the end of 11/97. Updated the 1997 RFO relay eval. Shts 3/17/98.
Outlier closed
OUTLIER TABLE INCLUDES A46, GROUP B Rcv. 4, 4/15/99 OSR-A Allen Bradley In DGACP & No Data Need to Investigate- either get data, test relays or replace Determine capacity and either PCR 97432 Relays repla OSR-B 200E400Z1A Relays DGBCP with relays of known ruggedness. accept or replace by the end of 11/97. U pd the 1997 RFO relay eval. Sh 3/17$ 8.
Outller closed VFX-1-A Allen Bradley In DGACP 8 No Data Need to Investigate either get data, test relays or replace Determine capacity and either PCR 974I32 Relays replaced VFX-1.B 200E30021A Relays DGBCP viith relays of known ruggedness. accept or replace by the end of 1187. Updated the 1997 RFO relay eval. Shts 3/17/98.
Outller closed VFX-2-A Allen Bradley In DGACP 8 No Data Need to Investigate- either get data, test relays or replace Determine capacity and either PCR 97%32 Relays replaced VFX-2-B 200E300Z1A Relays DGBCP with retays of known ruggedness. accept or replace by the end of 11/97. Updated the 1997 RFO relay evaL Shts 3/17/98.
Outller closed Cable Trays in Aux. Cable Trays Hanger AB34 does not meet Upon further investigation and inspection by D. Zebroskl Finalize analysis and either PCR 974I35 Support Bldg. EI.253 the umited Analytical Review and S. Anagnostis it was judged that even ff this hanger accept or modify by the end of DWG 33013-2746 enhancements requirements due to the was to be removed (fall), there was sufficient support the 1997 RFO. DANE-97488 Installed 11$ 7.
bending moment developed provided by adjacent hangers to maintain the current Revised OSVS ln the horizontal member at configuration. This is an extremely congested area, with CATS R05834 4/3/98.
the top of the hanger that cab'le trays branching and dropping Into BUS 16. Outller closed spans between the anchors.
AB2710 Cable Trays in Aux. Cable trays. 12'able tray is supported on Cables were investigated as part of the block wall effort Ses bhck wall discussion in ER-SC.4 Rev. 4 Procedures Bldg. El. 271 a bhck wall next to the fuel SSEL Report and Group B SSEL Rev. 1 Installed pool. resolution. Outller closed CATS R05837 INT253 Cable Trays in Int. Cable trays Block Waff Problems Cables were investigated as part of the block wall effort See bhck wall discusshn in ER-SC.4 Rev. 4 Procedures CLEAN bldg. Clean Side SSEL Report and Group B SSEL Rev. 1 installed EI.253 resolution. Outller closed CATS R05837 INT253 Cable Trays in Int. Cable trays Block Wall Problems Cables were investigated as part of the bhck wall effort See block wall discussion in ER-SC.4 Rev. 4 Procedures HOT Bldg. Controlled Sids SSEL Report and Group B SSEL Rev. 1 installed EI.271 resolution. Outffer closed CATS R05837 INT271 Cable Trays in InL Cable trays Block Wall Problems and tray Cables were investigated as part of the block wall effort See block wall discussion in ERIC.4 Rev. 4 Procedures HOT Bldg. Controlled Side span > 10'ue to missing SSEL Report and Group B SSEL Rev. 1 Installed EI.271 horizontal support member resolution. Outlier closed CATS R05837
OUTLIER TABLE INCLUDES A46, GROUP B Rev. 4, 4/IS/99 INT278 Cable Trays in Int. Cable trays Block Wall Problems Cables were investigated as part of the block wall effort See block wall discussion In F-Une fix/278'-4 Procedures CLEAN bldg. Clean Side Els. SSEL Report and Group B PCR98422 installed INT298 2788 298 and resolution. ER-SCA Rev.4 Outller clos CLEAN Controlled Side EL. CATS R05837 SSEL Rev. 1 INT293HO 293 W.O. 19801843 T
Group B See individual items See individual No loss of safe shutdown function. See SSEL Report for Perform time and motion studies Complete 12/98 below. items below. Loss of preferred mode of discussion and details. and cost/benefit analysis to operagon. See SSEL Report evaluate possible enhancements.
for discussion and details. Complete studies by end of 1997.
CATS ID R05837 Turbine Bldg. SW See above. SW Flow cal. DA-ME- Procedures 4613 Isolation Valve Service Water Group B See above. CATS ID R05837 96097 installed Turbine Bldg. SW Isolation ER-SC.4 Rev. 4 Outlier closed 4614 Isolation Valve SSEL Rev. 1 Air Conditioning SW AP~.1 4663 Isolaffon Valve Turbine Bldg. SW 4664 Isolation Valve 4773 Air Conditioning SW Isolation Valve SQUG indusion rules for AOV's specify 1" or larger line. See above. PCR 98452 Rev.1 DA- PCR 98052 5735 S/G A & B Blowdown NO, Must AOVon 3/4 tine. Valves too The line is fairly well supported vertically, but the valve can CATS ID R06966 CE-99-108 Rev 1 Rev. 1 installed 5736 Sample Isohtion Close. (faff flexib!e. put a torsional load on the pipe that should be evaluated to W.O. 19804454 DUF 994071 valve opera Valves dosed on loss meet the intent of the caveat. This is a new SQUG criteria 99 RFO restraints.
ofDCorlA) - the current license bash does not Indude any such limit SEWS updar on pipe line size. Pipe stress. 4/99.
Outller closed.
ERIC.4 Rev. 4 Procedures 5737 S/G A 8 B Biowdown NO, Must Group B See above. See above. SSEL Rev. 1 installed 5738 Isolation Valves Close, (fail CATS ID R06966 Outller closed dosed on loss ofDCorlA) 3504A Fix wall at F line Procedures and 3505A S/GA& 8 Steam NC, Must Group B See above. See above. PCR 98022 mods: installed Supply Valves to Remain IB 278'A South of waits 2I,3I,4I, Sl W.O. 19801843 DA-CE-98495 Outllor closod TDAFW Pump Closed, Open ER4C.4 Rev.4 on LOOP. SSEL REv.1
OUTLIER TABLE INCLUDES A46, GROUP B Rcv. 4, 4/15/99 Fix wall at F line Procedures MS@ Motor starter cubide Valve must Group B See above. See above. PCR 98422 mods. Instr V3505A for MOV 3505A remain dosed, W.O. 19801843 DACE-98495 Outlier clos Opens on ERIC.4 Rev.4 LOOP. SSEL REv. 1 Fix wall at F line Procedures and 3410 S/GA& B Must not FO, Group B See above. See above PCR 98-022 mods. installed 3411 Atmospheric relief NC and FC on IB 278'A South of walls 21,3I, 4I 5I
~ W.O. 19801843 DA-CE-98495 Outller closed valves lossofDCor ERIC.4 Rev.4 IA SSEL REv.1 See above. Procedure change: Procedures PHBG Pressurizer Heater Pressurizer See above. See above. Pull fuse installed Backup Group Heater CATS ID R06966 ERIC.4 Rev. 4 Outlier dosed SSEL Rev.1}}