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Category:INTERNAL OR EXTERNAL MEMORANDUM
MONTHYEARML20217J2381999-10-13013 October 1999 Informs That Attached Questions Transmitted by Fax on 991013 to J Rainsberry of Southern California Corp to Prepare for Upcoming Telephone Call ML20212G3791999-09-24024 September 1999 Notification of 991006-07 Meeting with Industry in San Clemente,California to Discuss Technical Issues Re Industry Development of Submittals for risk-informed Technical Specification Improvements ML20211J5591999-09-0101 September 1999 Informs That Application Date in First Line of Attached Ltr Issued 990823 Corrected to Read 990625, Not 1997. Requests That Corrected Copy Be Submitted to H Ray ML20211H4441999-08-27027 August 1999 Notification of Significant Meeting with Util on 990916 & 17 in Arlington,Tx to Improve Utility & NRC Understanding of Industry & Regulatory Perspectives on Current Issues ML20211H0431999-08-0909 August 1999 Submits Comments on San Onofre Response to NRC Request for Addl Info on risk-informed IST Program ML20210G4671999-07-30030 July 1999 Forwards Draft rept,NUREG/CR-xxxx,Vol x,INEEL/EXT-99-00373, High-Pressure Safety Injection Sys Reliability,1987-1997 ML20195H7251999-06-11011 June 1999 Forwards NRC Approved Operator Licensing Exam Facility Outline & Initial Exam,Submittal for Retake Exam Administered on 990416 ML20195H6031999-06-11011 June 1999 Forwards Exam Repts 50-361/99-301 & 50-362/99-301 Administered at Facility on 990416,with as Given Written Exam Attached ML20207F1141999-06-0404 June 1999 Notification of Significant Licensee Meeting with Util on 990628 to Discuss Emergency Preparedness Program Status & Planned Changes ML20205Q4491999-04-19019 April 1999 Forwards Viewgraphs of 990419 Telcon Re SG Eddy Current Insp Results Obtained During Imminent Refueling Outage ML20205N8821999-04-15015 April 1999 Forwards Questions Transmitted by Fax on 990415 to J Rainsberry of SCE & Request for Conference Call to Be Scheduled with Staff to Discuss SG Eddy Current Insp Results Obtained During Imminent Refueling Outage ML20205N5991999-04-14014 April 1999 Forwards Questions That Were Transmitted by Fax on 990414 to J Rainsberry of Southern California Corp,In Preparation for Upcoming Telcon on Recirculation Signal/Emergency Feedwater Actuation Signal While Channel in Tripped Condition ML20205M0111999-04-13013 April 1999 Forwards Questions to Be Discussed in Upcoming Telcon on GL 95-07.Questions Transmitted by Fax on 990413 to J Rrainsberry of SCE ML20205K4621999-04-0606 April 1999 Notification of Licensee Meeting with Util on 990422 to Discuss Results of PPR 99-01 ML20207L7041999-03-0202 March 1999 Notification of 990318 Meeting with SCE in Rockville, Maryland to Discuss SCE Mgt Plans for Future risk-informed License Amend Applications for SONGS ML20207L7091999-03-0202 March 1999 Notification of 990317 Meeting with SCE in Rockville, Maryland to Discuss Topics Resulting from NRC Staff Review & Confirmatory Analysis of Licensee Request to Remove Hydrogen Control Sys from SONGS Licensing Basis.Meeting Agenda Encl ML20199L3401999-01-22022 January 1999 Forwards Facility Submitted Outline,Initial Exam & as Given Operating Exam for Test Administered on 981115-20 at San Onofre Nuclear Generation Station ML20202C3931999-01-22022 January 1999 Forwards Exam Rept Administered on 981115-20 at San Onofre Nuclear Generating Station,With as Given Written Exam Encl ML20198M3241998-12-29029 December 1998 Submits Summary of Telcon Re Proposed Criteria to Support Development of SER Constraints for Reload Analysis Tr,For Plant,Units 2 & 3 ML20196G6481998-11-0303 November 1998 Notification of Significant Meeting with Util on 981125 at One White Flint to Discuss Licensee Views on Efforts to Maintain Safety Conscious Work Environ ML20155C9621998-10-27027 October 1998 Notification of 981124 Meeting with Util to Discuss Results of Employee Concerns Program Survey ML20153B4531998-09-0404 September 1998 Notification of Cancellation of 980924 Meeting with TVA in Rockville,Md to Discuss Review of Best Estimate of LOCA Methodology at Plant,Unit 2 ML20236Y6301998-08-0808 August 1998 Forwards Monthly Rept Reflecting Status of 10CFR2.206 Petitions as of 980731.Petitions on Plant GT97494 & GT97339 for Which DD Became Final Actions During Month Were Closed. Portion of Encl Withheld ML20237A0011998-08-0707 August 1998 Informs That Extension Granted on Envirocare Decision of 980904.Two Week Extension on Philadelphia VA Decision of 980828 Requested.Submits Concurrence of Changes.Rept on 2.206 July Status for Plants Encl ML20236K9071998-07-0707 July 1998 Notification of 980710 Meeting W/Util,Rescheduled from 980707,in Rockville MD to Discuss Proposed Amend for Extension of Allowed Outage Times for EDG ML20236K3021998-06-30030 June 1998 Notification of 980707 Meeting W/Util in Rockville,Md to Discuss Licensee Proposed Amend for Extension of Allowed Outage Times for EDG ML20249C2721998-06-19019 June 1998 Notification of 980707 Meeting W/Util in Arlington,Texas to Discuss SONGS New Security Mgt ML20249A1181998-06-11011 June 1998 Notification of 980630 Meeting W/Util in Region IV Office to Discuss Plant Performance Status & Effectiveness of Initiatives to Improve Performance ML20249A1221998-06-11011 June 1998 Forwards Unsolicited Info from San Onofre Licensee Re Emergency Diesel Generator Delegation Allowed Outage Time Extension TS Request ML20249A5621998-06-10010 June 1998 Notification of 980615 Meeting W/Util in Rockville,Md to Discuss SONGS Mgt drop-in Visit by Licensee New Manager, Regulatory Affairs ML20248L8621998-06-0909 June 1998 Forwards May 1998 Rept on Status of Public Petitioners Under 10CFR2.206.Petition on Seabrook (GT970873) for Which DD 98- 03 Became Final Agency Decision on 980413 Closed.Attachment 3 Withheld ML20248C8461998-05-29029 May 1998 Notification of 980529 Meeting W/Util in Rockville,Md for Licensee to Present Proposal for Performing Own Reload Analyses ML20248B6071998-05-26026 May 1998 Notification of Licensee Meeting W/Util on 980528 Re drop-in Visit by Licensee New Manager of Regulatory Affairs for Purpose of Meeting Senior Region IV Mgt ML20216H3281998-04-15015 April 1998 Notification of 980429 Meeting W/Util in Rockville,Md to Discuss Licensee Proposal for Changing Minimum Tcold for Plant Operation & Performing Own Reload Analyses ML20198J5461998-01-0707 January 1998 Notification of Licensee Meeting W/Util on 980120 to Discuss Apparent Violations Involving Physical Security Program. Meeting Not Open to Public ML20198F8931997-12-22022 December 1997 Informs That on 970304,San Onofre,Unit 2,pressurizer Vessel Experienced Cooldown Transient at Rate Greater than 200 F/Hr Limit Specified in Tss.Fracture Mechanics Evaluation of Pressurizer Transient Met Criteria in App G of ASME Code ML20203D4321997-12-0909 December 1997 Notifies of 971223 Meeting W/Util in Rockville,Md to Discuss Use of Mechanical Nozzle Seal Assemblies as Alternate ASME Code Replacements at Plant ML20199A7951997-11-0707 November 1997 Notification of Meeting W/Util on 971121 at Plant to Discuss Employee Concerns Program ML20198Q8611997-11-0606 November 1997 Forwards Copy of e-mail Response to e-mail Inquiry Received from J Chang of San Onofre Nuclear Station Re Info Notice 97-038, Level Sensing System Initiates Common Mode Failure of High Pressure Injection Pumps ML20217J6961997-10-16016 October 1997 Notification of Meeting W/Util on 971023 in Rockville,Md to Discuss Plans for Inspecting SG at Plant,Units 2 & 3 & Runtime Analysis Submitted on 970925 ML20211C4001997-09-22022 September 1997 Notification of Revised Licensee Meeting W/Util on 970930 in Arlington,Tx Re Predecisional Enforcement Conference ML20210T2841997-09-10010 September 1997 Notification of 970924 Licensee Meeting W/Sce in in Arlington,Tx Re Predecisional Enforcement Conference ML20141J8201997-08-18018 August 1997 Notification of 970821 Licensee Meeting W/Util in Arlington, Tx to Discuss RCS Nozzle Penetration Cracking ML20217G5901997-08-0202 August 1997 Informs That Notification Was Made to NRC Operations Center on 970802 as Listed ML20149F8771997-07-18018 July 1997 Notification of 970827 Licensee Meeting W/Util in San Clemente,Ca Re SALP ML20149D7881997-07-15015 July 1997 Revised Notice of Licensee Meeting W/Util in Arlington,Tx on 970805 to Discuss Employee Concerns Program ML20140B6061997-06-0303 June 1997 Notification of 970611 Meeting in Rockville,Md to Discuss Evaluation Rept Re Eggcrate Support Degradation Identified in San Onofre Unit 3 SG ML20141K8751997-05-27027 May 1997 Notifies of 970529 Meeting W/Util in Rockville,Md to Discuss San Onofre Unit 3 SG Eggcrate Visual Exam Results ML20138G2891997-04-30030 April 1997 Notification of 970509 Meeting W/Util in Rockville,Md to Discuss Operational Issues Re Eggcrate Support Degradation Recently Identified in Plant,Unit 3 SGs ML20149H5221997-04-25025 April 1997 Amended Emergency Petition Re Degradation of Steam Generator Internal Tube Supports (Egg Crates),Based on 970417 Rept. Plant Will Not Be Able to Completely Withstand Major Seismic Event 1999-09-24
[Table view] Category:MEMORANDUMS-CORRESPONDENCE
MONTHYEARML20217J2381999-10-13013 October 1999 Informs That Attached Questions Transmitted by Fax on 991013 to J Rainsberry of Southern California Corp to Prepare for Upcoming Telephone Call ML20212G3791999-09-24024 September 1999 Notification of 991006-07 Meeting with Industry in San Clemente,California to Discuss Technical Issues Re Industry Development of Submittals for risk-informed Technical Specification Improvements ML20211J5591999-09-0101 September 1999 Informs That Application Date in First Line of Attached Ltr Issued 990823 Corrected to Read 990625, Not 1997. Requests That Corrected Copy Be Submitted to H Ray ML20211H4441999-08-27027 August 1999 Notification of Significant Meeting with Util on 990916 & 17 in Arlington,Tx to Improve Utility & NRC Understanding of Industry & Regulatory Perspectives on Current Issues ML20211H0431999-08-0909 August 1999 Submits Comments on San Onofre Response to NRC Request for Addl Info on risk-informed IST Program ML20210G4671999-07-30030 July 1999 Forwards Draft rept,NUREG/CR-xxxx,Vol x,INEEL/EXT-99-00373, High-Pressure Safety Injection Sys Reliability,1987-1997 ML20195H7251999-06-11011 June 1999 Forwards NRC Approved Operator Licensing Exam Facility Outline & Initial Exam,Submittal for Retake Exam Administered on 990416 ML20195H6031999-06-11011 June 1999 Forwards Exam Repts 50-361/99-301 & 50-362/99-301 Administered at Facility on 990416,with as Given Written Exam Attached ML20207F1141999-06-0404 June 1999 Notification of Significant Licensee Meeting with Util on 990628 to Discuss Emergency Preparedness Program Status & Planned Changes ML20205Q4491999-04-19019 April 1999 Forwards Viewgraphs of 990419 Telcon Re SG Eddy Current Insp Results Obtained During Imminent Refueling Outage ML20205N8821999-04-15015 April 1999 Forwards Questions Transmitted by Fax on 990415 to J Rainsberry of SCE & Request for Conference Call to Be Scheduled with Staff to Discuss SG Eddy Current Insp Results Obtained During Imminent Refueling Outage ML20205N5991999-04-14014 April 1999 Forwards Questions That Were Transmitted by Fax on 990414 to J Rainsberry of Southern California Corp,In Preparation for Upcoming Telcon on Recirculation Signal/Emergency Feedwater Actuation Signal While Channel in Tripped Condition ML20205M0111999-04-13013 April 1999 Forwards Questions to Be Discussed in Upcoming Telcon on GL 95-07.Questions Transmitted by Fax on 990413 to J Rrainsberry of SCE ML20205K4621999-04-0606 April 1999 Notification of Licensee Meeting with Util on 990422 to Discuss Results of PPR 99-01 ML20207L7091999-03-0202 March 1999 Notification of 990317 Meeting with SCE in Rockville, Maryland to Discuss Topics Resulting from NRC Staff Review & Confirmatory Analysis of Licensee Request to Remove Hydrogen Control Sys from SONGS Licensing Basis.Meeting Agenda Encl ML20207L7041999-03-0202 March 1999 Notification of 990318 Meeting with SCE in Rockville, Maryland to Discuss SCE Mgt Plans for Future risk-informed License Amend Applications for SONGS ML20199L3401999-01-22022 January 1999 Forwards Facility Submitted Outline,Initial Exam & as Given Operating Exam for Test Administered on 981115-20 at San Onofre Nuclear Generation Station ML20202C3931999-01-22022 January 1999 Forwards Exam Rept Administered on 981115-20 at San Onofre Nuclear Generating Station,With as Given Written Exam Encl ML20198M3241998-12-29029 December 1998 Submits Summary of Telcon Re Proposed Criteria to Support Development of SER Constraints for Reload Analysis Tr,For Plant,Units 2 & 3 ML20196G6481998-11-0303 November 1998 Notification of Significant Meeting with Util on 981125 at One White Flint to Discuss Licensee Views on Efforts to Maintain Safety Conscious Work Environ ML20155C9621998-10-27027 October 1998 Notification of 981124 Meeting with Util to Discuss Results of Employee Concerns Program Survey ML20153B4531998-09-0404 September 1998 Notification of Cancellation of 980924 Meeting with TVA in Rockville,Md to Discuss Review of Best Estimate of LOCA Methodology at Plant,Unit 2 ML20236Y6301998-08-0808 August 1998 Forwards Monthly Rept Reflecting Status of 10CFR2.206 Petitions as of 980731.Petitions on Plant GT97494 & GT97339 for Which DD Became Final Actions During Month Were Closed. Portion of Encl Withheld ML20237A0011998-08-0707 August 1998 Informs That Extension Granted on Envirocare Decision of 980904.Two Week Extension on Philadelphia VA Decision of 980828 Requested.Submits Concurrence of Changes.Rept on 2.206 July Status for Plants Encl ML20236K9071998-07-0707 July 1998 Notification of 980710 Meeting W/Util,Rescheduled from 980707,in Rockville MD to Discuss Proposed Amend for Extension of Allowed Outage Times for EDG ML20236K3021998-06-30030 June 1998 Notification of 980707 Meeting W/Util in Rockville,Md to Discuss Licensee Proposed Amend for Extension of Allowed Outage Times for EDG ML20249C2721998-06-19019 June 1998 Notification of 980707 Meeting W/Util in Arlington,Texas to Discuss SONGS New Security Mgt ML20249A1221998-06-11011 June 1998 Forwards Unsolicited Info from San Onofre Licensee Re Emergency Diesel Generator Delegation Allowed Outage Time Extension TS Request ML20249A1181998-06-11011 June 1998 Notification of 980630 Meeting W/Util in Region IV Office to Discuss Plant Performance Status & Effectiveness of Initiatives to Improve Performance ML20249A5621998-06-10010 June 1998 Notification of 980615 Meeting W/Util in Rockville,Md to Discuss SONGS Mgt drop-in Visit by Licensee New Manager, Regulatory Affairs ML20248L8621998-06-0909 June 1998 Forwards May 1998 Rept on Status of Public Petitioners Under 10CFR2.206.Petition on Seabrook (GT970873) for Which DD 98- 03 Became Final Agency Decision on 980413 Closed.Attachment 3 Withheld ML20248C8461998-05-29029 May 1998 Notification of 980529 Meeting W/Util in Rockville,Md for Licensee to Present Proposal for Performing Own Reload Analyses ML20248B6071998-05-26026 May 1998 Notification of Licensee Meeting W/Util on 980528 Re drop-in Visit by Licensee New Manager of Regulatory Affairs for Purpose of Meeting Senior Region IV Mgt ML20216H3281998-04-15015 April 1998 Notification of 980429 Meeting W/Util in Rockville,Md to Discuss Licensee Proposal for Changing Minimum Tcold for Plant Operation & Performing Own Reload Analyses ML20198J5461998-01-0707 January 1998 Notification of Licensee Meeting W/Util on 980120 to Discuss Apparent Violations Involving Physical Security Program. Meeting Not Open to Public ML20198F8931997-12-22022 December 1997 Informs That on 970304,San Onofre,Unit 2,pressurizer Vessel Experienced Cooldown Transient at Rate Greater than 200 F/Hr Limit Specified in Tss.Fracture Mechanics Evaluation of Pressurizer Transient Met Criteria in App G of ASME Code ML20203D4321997-12-0909 December 1997 Notifies of 971223 Meeting W/Util in Rockville,Md to Discuss Use of Mechanical Nozzle Seal Assemblies as Alternate ASME Code Replacements at Plant ML20199A7951997-11-0707 November 1997 Notification of Meeting W/Util on 971121 at Plant to Discuss Employee Concerns Program ML20198Q8611997-11-0606 November 1997 Forwards Copy of e-mail Response to e-mail Inquiry Received from J Chang of San Onofre Nuclear Station Re Info Notice 97-038, Level Sensing System Initiates Common Mode Failure of High Pressure Injection Pumps ML20217J6961997-10-16016 October 1997 Notification of Meeting W/Util on 971023 in Rockville,Md to Discuss Plans for Inspecting SG at Plant,Units 2 & 3 & Runtime Analysis Submitted on 970925 ML20211C4001997-09-22022 September 1997 Notification of Revised Licensee Meeting W/Util on 970930 in Arlington,Tx Re Predecisional Enforcement Conference ML20210T2841997-09-10010 September 1997 Notification of 970924 Licensee Meeting W/Sce in in Arlington,Tx Re Predecisional Enforcement Conference ML20141J8201997-08-18018 August 1997 Notification of 970821 Licensee Meeting W/Util in Arlington, Tx to Discuss RCS Nozzle Penetration Cracking ML20217G5901997-08-0202 August 1997 Informs That Notification Was Made to NRC Operations Center on 970802 as Listed ML20149F8771997-07-18018 July 1997 Notification of 970827 Licensee Meeting W/Util in San Clemente,Ca Re SALP ML20149D7881997-07-15015 July 1997 Revised Notice of Licensee Meeting W/Util in Arlington,Tx on 970805 to Discuss Employee Concerns Program ML20140B6061997-06-0303 June 1997 Notification of 970611 Meeting in Rockville,Md to Discuss Evaluation Rept Re Eggcrate Support Degradation Identified in San Onofre Unit 3 SG ML20141K8751997-05-27027 May 1997 Notifies of 970529 Meeting W/Util in Rockville,Md to Discuss San Onofre Unit 3 SG Eggcrate Visual Exam Results ML20138G2891997-04-30030 April 1997 Notification of 970509 Meeting W/Util in Rockville,Md to Discuss Operational Issues Re Eggcrate Support Degradation Recently Identified in Plant,Unit 3 SGs ML20149H5221997-04-25025 April 1997 Amended Emergency Petition Re Degradation of Steam Generator Internal Tube Supports (Egg Crates),Based on 970417 Rept. Plant Will Not Be Able to Completely Withstand Major Seismic Event 1999-09-24
[Table view] |
Text
- - - -
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". January 24, 1997
'f MEMORANDUM TO: William H. Bateman, Director-
. Project Directorate IV-2 Division of Reactor Projects III/IV ORIGINAL SIGNED BY FROM: Mel B. Fields, Project Manager Project Directorate IV-2 Division of Reactor Projects III/IV
SUBJECT:
FORTHCOMING MEETING WITH SOUTHERN CALIFORNIA EDIS0N TO DISCUSS STEAM GENERATOR INSPECTION RESULTS DATE & TIME: Thursday January 30, 1997 1:00 pm - 4:00 pm
. LOCATION: U.S. NRC One White Flint North 11555 Rockville Pike Rockville, MD 20852 Room 0-13B9 PURPOSE: To provide the NRC with an update on the steam generator inspection results for the San Onofre Nuclear Generating Station, Unit 2. A meeting agenda is attached.
PARTICIPANTS *: fiBq Southern California Edison Jack Strosnider Mike Short, et. al.
Ted Sullivan Phillip Rush Mel Fields Docket Nos. 50-361 and 50-362
Attachment:
Agenda i l
cc w/att: See next page '
, CONTACT: M. Fields 415-3062
- Meetings between NRC technical staff and applicants or licensees are open for interested members of the public, petitioners, intervenors, or other parties to attend as observers pursuant to " Commission Policy Statement on Staff I Meetings Open to the Public" 59 Federal Reaister 48340, 9/20/94.
DOCUMENT NAME: S013097.MTG l 1
0FC PDIV-2/PM MFJ/f$:ye PDIV-2/LA Q NAME EP N n ;
,DATE- 1/lM/97 194/97 0FFICIAL RECORD _ COPY l 1
9701290144 970124 DR ADOCK 0500 1 NBC FRE CDRER COPY
$WTO p- -*4 UNITED STATES
, s* I j
E NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20eeNm01
\*****/ January 24, 1997 MEMORANDUM 10: William H. Bateman, Director Project Directorate IV-2 Division of R act jects ./IV FROM: Mel r an' gen ProjectDireeforateIV Division of Reactor Projects III/IV l
SUBJECT:
FORTHCOMING MEETING WITH SOUTHERN CALIFORNIA EDIS0N TO DISCUSS STEAM GENERATOR INSPECTION RESULTS DATE & TIME: Thursday January 30, 1997 .
1:00 pm - 4:00 pm !
LOCATION: U.S. NRC l One White Flint North 11555 Rockville Pike Rockville, MD 20852 Room 0-1389 PURPOSE: To provide the NRC with an update on the steam generator ir.spection results for the San Onofre Nuclear Generating
'tation,
, Unit 2. A meeting agenda is attached.
PARTICIPANTS *: EG Southern California Edison Jack Strosnider Mike Short, et. al.
Ted Sullivan Phillip Rush Mel Fields Docket Nos. 50-361 and 50-362
Attachment:
Agenda cc w/att: See next page CONTACT: M. Fields 415-3062
- Meetings between NRC technical staff and applicants or licensees are open for interested members of the public, petitioners, intervenors, or other parties to attend as observers pursuant to " Commission Policy Statement on Staff Meetings Open to the Public" 59 Federal Reaister 48340, 9/20/94.
a l
1
- l 1 I I cc w/att
- Mr. R. W. Krieger, Vice President Resident Inspector / San Onofre NPS ,
Southern California Edison Company c/o U.S. Nuclear Regulatory Commission l
- San Onofre Nuclear Generating Station Post Office Box 4329 P. O. Box 128 San Clemente, California 92674
- San Clemente, California 92674-0128 5
Mayor
- Chairman, Board of Supervisors City of San Clemente !
County of San Diego 100 Avenida Presidio 1600 Pacific Highway, Room 335 San Clemente, California 92672 l l San Diego, California 92101 '
] Mr. Harold B. Ray 1
Alan R. Watts, Esq. Executive Vice President
, Rourke & Woodruff Southern California Edison Company
- 701 S. Parker St. No. 7000 San Onofre Nuclear Generating Station
. ' Orange, California 92668-4702 P.O. Box 128 San Clemente, California 92674-0128
! Mr. Sherwin Harris Resource Project Manager
- Public Utilities Department
- City of Riverside
! 3900 Main Street Riverside, California 92522 I Dr. Harvey Collins, Chief Division of Drinking Water and Environmental Management i California Department of Health Services P. O. Box 942732 Sacramento, California 94234-7320 l
i Regional Administrator, Region IV l U.S. Nuclear Regulatory Commission 3
Harris Tower & Pavilion j 611 Ryan Plaza Drive, Suite 400 Arlington, Texas 76011-8064
< Mr. Terry Winter i Manager, Power Operations San Diego Gas & Electric Company
- P.O. Box 1831 San Diego, California 92112-4150 Mr. Steve Hsu Radiologic Health Branch 4'
State Department of Health Services Post Office Box 942732
- Sacramento, California 94234 l
t 4
f !
- Attachment b
- NEETING NITH SOUTHERN CALIFORNIA EDIS0N-i TO DISCUSS STEAN GENERATOR INSPECTION RESULTS FOR SAN ON0FRE NUCLEAR GENERATING STATION UNIT 2 NEETING AGEWA
]
i The following list of issues is included to facilitate the discussions of the
! steam generator tube inspection results for San Onofre Unit 2. The issues
! will be addressed to the extent possible during the meeting. ;
- 1. For each mode of degradation (e.g., TTS circumferential, axial freespan) i i discuss how the completed or planned inspection scope is sufficient to '
ensure that tubes with significant or potentially significant (at the
- end of the next cycle) indications are identified and removed from
, service. Specifically address the extent to which the nondestructive
- evaluation (NDE) techniques used for the detection of axial freespan and l eggcrate indications satisfy the guidance in Section C.I.2 of the draft i regulatory guide (RG) on steam generator tube integrity. The NRC staff !
recognizes that the RG is not yet finalized; nevertheless, the ideas 1
- incorporated into the draft RG reflect the most current and
- comprehensive means of evaluating NDE techniques.
I
- 2. Discuss how the most significant indications detected to date will be
- assessed with respect to the margins specified in Regulatory Guide
! 1.121. Explain how these indications bound the other detected i
! indications for each mode of degradation.
- 3. Summarize the scope of the in-situ pressure testing and tube pulls planned for the current refueling outage. Specifically address how the tube pulls will be used to support a cycle length assessment of the axial freespan degradation. Provide the basis for assuming that the
- pull candidates are representative (or bounding) of similar indications identified at other locations within the steam generators and that the l- scope of the tube pull program is sufficient to obtain a range of i degradation depths from below the detection limits of the inspection l technique to the bounding indications.
l
- 4. Discuss the relative quality of the eddy current inspection data (i.e.,
- noise / interfering signals) for the tube pull and in-situ pressure test e candidates to both the population of tubes identified with similar indications and to all the remaining of tubes in the bundle. Also compare the overall quality of the eddy current data obtained in the current refueling outage to previous outages and to other CE units that have identified similar modes of degradation. Only consider corrosion-g induced tube damage mechanisms.
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!* i I 5. The overall objective for addressing tube denting should be to understand the initiation and growth of cracking due to the influence of denting so that unacceptable crack lengths and depths will not be ,
present at any point during the next operating cycle. Discuss the efforts taken to date to address this issue. Also, explain the criteria for identifying dents in the current and prior operating cycles from the
- bobbin coil probe data. Include in the presentation a discussion 2
describing the dented locations within the steam generators identified both in the current and in previous inspections.
! 6. Discuss the scope, possible methodologies, and schedule for completing a runtime assessment.
- 7. Please submit to the NRC, the raw eddy current inspection data from both the Plus Point and bobbin coil inspections for those tubes that have or will be in-situ pressure tested or pulled during the current refueling
- outage. Also, include the data for at least two crack indications detected at dented locations. If in-situ test or tube pull candidates
, have not been finalized, provide the data for the most likely choices. ,
Along with the eddy current data, provide the drawings of the standards that were used to calibrate the inspection probes. The data should be compatible with Eddynet95.
! 8. Based on our understanding of the inspection results completed to date, '
the axial freespan indications do not appear to be located in areas of the tube bundle that might be identified from a thermal-hydraulic i analysis (i.e., ATHOS). This finding is not entirely consistent with i conclusions from other licensees that have indicated that the general
- areas affected by this mode of tube degradation may be identified
- through analytical models. To the extent practical, discuss the models that are used to predict the location of susceptible regions for CE
~
designed steam generators at all plants that have inspected for this i mode of degradation to date. Compare and contrast analysis results and inspection findings for similar steam generators. Provide evidence j supporting the conclusion that computational modeling can or cannot be j used to predict these areas. Discuss the following to support your
- conclusion
- (1) the inspection scope, (2) model results, and (3)
- inspection findings (i.e., deposits and indications).
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