Similar Documents at Fermi |
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Category:INTERNAL OR EXTERNAL MEMORANDUM
MONTHYEARML20217N4491999-09-28028 September 1999 Submits Concurrence Re Fermi 1 License Amend 17 ML20217E6881999-07-0808 July 1999 Responds to 990609 Request for NRR to Determine Whether Requirements in Fermi 2 TS Action 3.8.1.1.c Apply to SLC Sys ML20196A2741999-06-21021 June 1999 Notification of 990708-09 Meeting with Util in Rockville,Md to Discuss Issues Related to Licensee Amend Submittal for Conversion of Technical Specifications for Fermi Unit 2 Plant ML20217E7141999-06-17017 June 1999 Responds to NRR Work Request, by Providing TS Branch Comments Re Events at Fermi 2 on 990504 ML20195D5601999-06-0404 June 1999 Notification of 990617 Meeting with Util in Rockville,Md to Discuss Issues Related to Licensee Plans to Replace Existing Spent Fuel Pool Racks & Add New Rack at Facility ML20205Q7271999-04-15015 April 1999 Requests Fr Publication of Notice Issuance of Amend 16 to DPR-9.Amend Revises Fermi 1 TS to Allow Possession of Nominal Amount of Special Nuclear Matl ML20205Q7361999-03-29029 March 1999 Informs That NRC Reviewed & Concurred on Encl Amend ML20204H0621999-03-22022 March 1999 Notification of 990412-14 Meetings with NRC in Rockville,Md to Discuss Issues Re Licensee Amend Submittal for Conversion of TS for Plant ML20207D6221999-03-0404 March 1999 Notification of 990319 Meeting with Detroit Edison Co in Rockville,Maryland to Discuss Issues Re Licensee Amend Submittal for Conversion of TS for Configuration Risk Mgt Program for Fermi-2 Plant ML20203F7711999-02-10010 February 1999 Discusses 990203-04 Meeting with Deco to Discuss Issues Related to Fermi Unit 2 Submittal for Conversion to Improved Standard TSs & to Discuss Proposed Questions for RAI for Section 3.6 of Conversion.List of Attendees Encl ML20203F7871999-02-10010 February 1999 Refers to 990125-26 Meeting with Deco to Discuss Issues Related to Fermi Unit 2 Submittal for Conversion to Improved Standard TS & to Discuss 981204 RAI for Section 3.4 & 3.9 of Conversion & Proposed Questions for RAI for Section 3.6 ML20202H6061999-01-29029 January 1999 Notifies of 990203-05 Meetings with Util in Rockville,Md to Discuss Section 3.6 & Other Items Re Licensee Amend Submittal for Conversion of TSs to Fermi-2 Plant ML20206R7761999-01-13013 January 1999 Second Rev Notice of 990125-28 Meetings with Util in Rockville,Md to Discuss Issues Related to Licensee Amend Submittal for Conversion of Technical Specifications for Fermi Unit 2 Plant ML20198S3371999-01-0606 January 1999 Requests Fr Publication of Notice of Issuance of Amend 15 to License DPR-9.Amend Revises Fermi I TS to Include Requirements for Control of Effluents,With Provisions for Tritium Effluent Monitoring or Analysis ML20198H8061998-12-22022 December 1998 Notification of 980111-14 Meetings with Util in Rockville,Md to Discuss Sections 3.4,3.5,3.6 & 3.9 & Other Items Re Util Amend Submittal for Conversion of TS for Plant ML20198J6801998-12-22022 December 1998 Notification of 980119-20 Meetings with Util in Rockville,Md to Discuss License Amend for Conversion to Improved STS ML20195G5851998-11-20020 November 1998 Submits Hearing File & Table of Contents.Hearing Filed by Sp O'Hern Seeks Review of Grading of Written Exam for Reactor Operator License.Hearing Consists of Documents Relating to Administration & Grading of Written Exam ML20196F5191998-11-20020 November 1998 Notification of 981214-15 Meeting with Util in Rockville,Md to Discuss Sections 3.5,3.6 & 3.8 & Other Items Related to Licensee Amend Submittal for Conversion of TS for Fermi Unit 2 Plant to Improved Std TS ML20195J8421998-11-19019 November 1998 Notification of 981201,02,03 & 04 Meetings with Util in Rockville,Md to Discuss Sections 3.3,3.5,3.6 & 3.8 & Other Items Re Licensee Amend Submittal for Conversion of Improved TSs for Plant ML20154R2381998-10-21021 October 1998 Requests Publication in Biweekly Fr Notice of Issuance of Amend to License DPR-9,allowing Access Control Flexibility & Establishing Compensatory Provisons for Cases When Protected Area Boundary Temporarily Will Not Meet TS Criteria ML20154M8951998-10-19019 October 1998 Requests That Attached Docket Consisting of from O'Hern Be Served.Served on 981020 ML20154P8411998-10-14014 October 1998 Notification of 981109 & 10 Meeting with Deco in Rockville, MD to Discuss Section 3.3 & Other Issues Re Licensee Amend Submittal for Conversion of TS for Plant Unit 2 ML20154R2421998-10-0707 October 1998 Informs of Review & Concurrence on Amend 13 to License.Rev of License Amend Package Encl.Without Encl ML20154E9281998-10-0505 October 1998 Forwards Request for Hearing,Dtd 980922,in Response to Ltr from Nrc,Dtd 980907,sustaining Denial of O'Hern Reactor Operator License Application ML20198S3231998-09-16016 September 1998 Concurs with Issuance of Amend 15 Re Reply to Fermi 1 License Amend Request of 980826 ML20151V1381998-09-0808 September 1998 Notification of 980928-30 Meeting W/Detroit Edison Co in Rockville,Md to Discuss Sections 3.5,3.7 & 3.9 of Licensee Amend Submittal & Other Items Related to Conversion of TSs for Fermi-2 Plant ML20238F2321998-08-27027 August 1998 Notification of 981007 & 08 Meeting W/Util in Rockville,Md to Discuss Section 3.3 & Other Items Related to Licensee Amend Submittal for Conversion of TSs for Fermi-2 Plant ML20237D1251998-08-19019 August 1998 Notification of 980908 & 09 Meetings W/Util in Rockville,Md to Discuss Section 3.8 & Other Items Re Licensee Amend Submittal for Conversion of TSs ML20236W1591998-07-27027 July 1998 Notification of 980805-06 Meeting W/Detroit Edison Co in Rockville,Md to Discuss Sections 2.0,3.1 & 3.2 of Licensee Amend Submittal for Conversion of TSs for Fermi-2 Plant ML20236T6511998-07-22022 July 1998 Notification of 980728 Meeting W/Util in Rockville,Md Re Fermi I QA & Effluent Monitoring Programs ML20236S1661998-07-14014 July 1998 Notification of 980728 & 29 Meeting W/Util in Rockville,Md to Discuss Section 3.6 of Licensee Amend Submittal for Conversion of TSs for Plant,Unit 2 ML20236K3131998-07-0101 July 1998 Forwards SER Accepting Licensee 971201 & 980624 Confirmation of Revised Feedwater Nozzle Crack Growth Analysis for Fermi Unit 2 ML20249C8351998-06-29029 June 1998 Forwards Exam Rept 50-341/98-301 Conducted During Wks of 980406-13,w/as-given Written Exam ML20236F4361998-06-29029 June 1998 Forwards Facility Submitted Outline,Initial Exam Submittal & as Given Operating Exam for Tests Administered During Wk of 980406-13 at Plant ML20249C0341998-06-17017 June 1998 Notification of 980707 & 08 Meeting W/Detroit Edison Co in Rockville,Md to Discuss Portion of Licensee Amend Submittal for Conversion of TSs for Fermi-2 Plant ML20216H0051998-03-0606 March 1998 Forwards Signed Original Notice of Public Meeting in Monroe, Mi,To Discuss Status of Enrico Fermi Power Plant,Unit 1 Decommissioning ML20203L4091998-03-0202 March 1998 Notification of 980306 Meeting W/Detroit Edison Co in Rockville,Md to Discuss Fermi,Unit 1,SAR ML20203B2901998-02-12012 February 1998 Informs That NRC Plans to Hold Public Meeting on 980422 in Monroe,Mi.Requests That Encl 2 Copies of Fermi 1 SAR Be Made Available for Public Review Until May 1998.W/o Encl ML20199A9011998-01-15015 January 1998 Notification of 980130 Meeting W/Detroit Edison Co in Rockville,Md to Discuss Licensee Amend Submittal for Fermi-2 Plant,Particularly Those Necessary to Support Next Refueling Outage & Meet New DEC Licensing Personnel ML20198R5971997-10-23023 October 1997 Notification of 971104 Meeting W/Detroit Edison Co in Rockville,Md to Discuss Licensee Preparations for Submittal of Improved STS for Fermi-2 Plant ML20149H7071997-07-0303 July 1997 Notification of 970715 Meeting W/Detroit Edison Co in Rockville,Md to Discuss Decommissioning Plans for Fermi,Unit 1 ML20140D4891997-04-18018 April 1997 Notification of 970422 Meeting W/Util in Rockville,Md to Discuss Licensee Resolution of Issues Related to Operability of Emergency Equipment Cooling Water Sys at Fermi-2 Plant ML20138J7671997-02-0505 February 1997 Informs That NRC Plans to Administer Generic Fundamentals Exam Section of Written Operator Licenseing Exam on 970409. Ltr W/Copy to Chief,Operator Licensing Branch Must Be Submitted to Listed Address in Order to Register Personnel ML20133P4211997-01-21021 January 1997 Notification of 970129 Meeting W/State of Mi & FEMA in Rockville,Md to Discuss Potential Alternative Approaches to Management of Dose Assessment for Protective Action Decision Making W/Respect to Emergency Planning ML20133L7711997-01-0202 January 1997 Requests Fr Publication of Notice of Issuance of Amend to License DPR-9.Amend Will Allow Certain Equipment & Instruments to Be Removed from Svc from Short Periods of Time to Allow for Maint,Testing,Insp & Mods ML20132F4961996-12-20020 December 1996 Notification of 970109 Meeting W/Listed Attendess in Rockville,Md to Discuss Potential Alternative Approaches to Mgt of Dose Assessment for Protective Action Decision Making W/Respect to Emergency Planning ML20134P9491996-11-26026 November 1996 Notification of drop-in Meeting W/Fermi 2 Senior Vice Presidents in Rockville,Md to Discuss Performance During Fifth Refueling Outage,Licensees New Operational Excellence Plan & Other Items of General Interest ML20134J6061996-11-14014 November 1996 Informs That NRC Staff Decided to Review Attached SE Re Control Rod Overtravel Alarm,Performed by Detroit Edison Co for Plant ML20129A7671996-10-10010 October 1996 Requests Fr Publication of Notice of Consideration of Issuance of Amend to License DPR-9 & Proposed NSHC Determination & Opportunity for Hearing on 960829 Request to Allow Certain Equipment to Be Removed from Svc ML20149L1141996-02-20020 February 1996 Notification of 960301 Meeting W/Licensee in Rockville,Md to Discuss Licensee Proposed Design Criteria Spec for Cchvac Structural Requalification 1999-09-28
[Table view] Category:MEMORANDUMS-CORRESPONDENCE
MONTHYEARML20217N4491999-09-28028 September 1999 Submits Concurrence Re Fermi 1 License Amend 17 ML20217E6881999-07-0808 July 1999 Responds to 990609 Request for NRR to Determine Whether Requirements in Fermi 2 TS Action 3.8.1.1.c Apply to SLC Sys ML20196A2741999-06-21021 June 1999 Notification of 990708-09 Meeting with Util in Rockville,Md to Discuss Issues Related to Licensee Amend Submittal for Conversion of Technical Specifications for Fermi Unit 2 Plant ML20217E7141999-06-17017 June 1999 Responds to NRR Work Request, by Providing TS Branch Comments Re Events at Fermi 2 on 990504 ML20195D5601999-06-0404 June 1999 Notification of 990617 Meeting with Util in Rockville,Md to Discuss Issues Related to Licensee Plans to Replace Existing Spent Fuel Pool Racks & Add New Rack at Facility ML20205Q7271999-04-15015 April 1999 Requests Fr Publication of Notice Issuance of Amend 16 to DPR-9.Amend Revises Fermi 1 TS to Allow Possession of Nominal Amount of Special Nuclear Matl ML20205Q7361999-03-29029 March 1999 Informs That NRC Reviewed & Concurred on Encl Amend ML20204H0621999-03-22022 March 1999 Notification of 990412-14 Meetings with NRC in Rockville,Md to Discuss Issues Re Licensee Amend Submittal for Conversion of TS for Plant ML20207D6221999-03-0404 March 1999 Notification of 990319 Meeting with Detroit Edison Co in Rockville,Maryland to Discuss Issues Re Licensee Amend Submittal for Conversion of TS for Configuration Risk Mgt Program for Fermi-2 Plant ML20203F7871999-02-10010 February 1999 Refers to 990125-26 Meeting with Deco to Discuss Issues Related to Fermi Unit 2 Submittal for Conversion to Improved Standard TS & to Discuss 981204 RAI for Section 3.4 & 3.9 of Conversion & Proposed Questions for RAI for Section 3.6 ML20203F7711999-02-10010 February 1999 Discusses 990203-04 Meeting with Deco to Discuss Issues Related to Fermi Unit 2 Submittal for Conversion to Improved Standard TSs & to Discuss Proposed Questions for RAI for Section 3.6 of Conversion.List of Attendees Encl ML20202H6061999-01-29029 January 1999 Notifies of 990203-05 Meetings with Util in Rockville,Md to Discuss Section 3.6 & Other Items Re Licensee Amend Submittal for Conversion of TSs to Fermi-2 Plant ML20206R7761999-01-13013 January 1999 Second Rev Notice of 990125-28 Meetings with Util in Rockville,Md to Discuss Issues Related to Licensee Amend Submittal for Conversion of Technical Specifications for Fermi Unit 2 Plant ML20198S3371999-01-0606 January 1999 Requests Fr Publication of Notice of Issuance of Amend 15 to License DPR-9.Amend Revises Fermi I TS to Include Requirements for Control of Effluents,With Provisions for Tritium Effluent Monitoring or Analysis ML20198J6801998-12-22022 December 1998 Notification of 980119-20 Meetings with Util in Rockville,Md to Discuss License Amend for Conversion to Improved STS ML20198H8061998-12-22022 December 1998 Notification of 980111-14 Meetings with Util in Rockville,Md to Discuss Sections 3.4,3.5,3.6 & 3.9 & Other Items Re Util Amend Submittal for Conversion of TS for Plant ML20196F5191998-11-20020 November 1998 Notification of 981214-15 Meeting with Util in Rockville,Md to Discuss Sections 3.5,3.6 & 3.8 & Other Items Related to Licensee Amend Submittal for Conversion of TS for Fermi Unit 2 Plant to Improved Std TS ML20195G5851998-11-20020 November 1998 Submits Hearing File & Table of Contents.Hearing Filed by Sp O'Hern Seeks Review of Grading of Written Exam for Reactor Operator License.Hearing Consists of Documents Relating to Administration & Grading of Written Exam ML20195J8421998-11-19019 November 1998 Notification of 981201,02,03 & 04 Meetings with Util in Rockville,Md to Discuss Sections 3.3,3.5,3.6 & 3.8 & Other Items Re Licensee Amend Submittal for Conversion of Improved TSs for Plant ML20154R2381998-10-21021 October 1998 Requests Publication in Biweekly Fr Notice of Issuance of Amend to License DPR-9,allowing Access Control Flexibility & Establishing Compensatory Provisons for Cases When Protected Area Boundary Temporarily Will Not Meet TS Criteria ML20154M8951998-10-19019 October 1998 Requests That Attached Docket Consisting of from O'Hern Be Served.Served on 981020 ML20154P8411998-10-14014 October 1998 Notification of 981109 & 10 Meeting with Deco in Rockville, MD to Discuss Section 3.3 & Other Issues Re Licensee Amend Submittal for Conversion of TS for Plant Unit 2 ML20154R2421998-10-0707 October 1998 Informs of Review & Concurrence on Amend 13 to License.Rev of License Amend Package Encl.Without Encl ML20154E9281998-10-0505 October 1998 Forwards Request for Hearing,Dtd 980922,in Response to Ltr from Nrc,Dtd 980907,sustaining Denial of O'Hern Reactor Operator License Application ML20198S3231998-09-16016 September 1998 Concurs with Issuance of Amend 15 Re Reply to Fermi 1 License Amend Request of 980826 ML20151V1381998-09-0808 September 1998 Notification of 980928-30 Meeting W/Detroit Edison Co in Rockville,Md to Discuss Sections 3.5,3.7 & 3.9 of Licensee Amend Submittal & Other Items Related to Conversion of TSs for Fermi-2 Plant ML20238F2321998-08-27027 August 1998 Notification of 981007 & 08 Meeting W/Util in Rockville,Md to Discuss Section 3.3 & Other Items Related to Licensee Amend Submittal for Conversion of TSs for Fermi-2 Plant ML20237D1251998-08-19019 August 1998 Notification of 980908 & 09 Meetings W/Util in Rockville,Md to Discuss Section 3.8 & Other Items Re Licensee Amend Submittal for Conversion of TSs ML20236W1591998-07-27027 July 1998 Notification of 980805-06 Meeting W/Detroit Edison Co in Rockville,Md to Discuss Sections 2.0,3.1 & 3.2 of Licensee Amend Submittal for Conversion of TSs for Fermi-2 Plant ML20236T6511998-07-22022 July 1998 Notification of 980728 Meeting W/Util in Rockville,Md Re Fermi I QA & Effluent Monitoring Programs ML20236S1661998-07-14014 July 1998 Notification of 980728 & 29 Meeting W/Util in Rockville,Md to Discuss Section 3.6 of Licensee Amend Submittal for Conversion of TSs for Plant,Unit 2 ML20236K3131998-07-0101 July 1998 Forwards SER Accepting Licensee 971201 & 980624 Confirmation of Revised Feedwater Nozzle Crack Growth Analysis for Fermi Unit 2 ML20236F4361998-06-29029 June 1998 Forwards Facility Submitted Outline,Initial Exam Submittal & as Given Operating Exam for Tests Administered During Wk of 980406-13 at Plant ML20249C8351998-06-29029 June 1998 Forwards Exam Rept 50-341/98-301 Conducted During Wks of 980406-13,w/as-given Written Exam ML20249C0341998-06-17017 June 1998 Notification of 980707 & 08 Meeting W/Detroit Edison Co in Rockville,Md to Discuss Portion of Licensee Amend Submittal for Conversion of TSs for Fermi-2 Plant ML20216H0051998-03-0606 March 1998 Forwards Signed Original Notice of Public Meeting in Monroe, Mi,To Discuss Status of Enrico Fermi Power Plant,Unit 1 Decommissioning ML20203L4091998-03-0202 March 1998 Notification of 980306 Meeting W/Detroit Edison Co in Rockville,Md to Discuss Fermi,Unit 1,SAR ML20203B2901998-02-12012 February 1998 Informs That NRC Plans to Hold Public Meeting on 980422 in Monroe,Mi.Requests That Encl 2 Copies of Fermi 1 SAR Be Made Available for Public Review Until May 1998.W/o Encl ML20199A9011998-01-15015 January 1998 Notification of 980130 Meeting W/Detroit Edison Co in Rockville,Md to Discuss Licensee Amend Submittal for Fermi-2 Plant,Particularly Those Necessary to Support Next Refueling Outage & Meet New DEC Licensing Personnel ML20198R5971997-10-23023 October 1997 Notification of 971104 Meeting W/Detroit Edison Co in Rockville,Md to Discuss Licensee Preparations for Submittal of Improved STS for Fermi-2 Plant ML20149H7071997-07-0303 July 1997 Notification of 970715 Meeting W/Detroit Edison Co in Rockville,Md to Discuss Decommissioning Plans for Fermi,Unit 1 ML20140D4891997-04-18018 April 1997 Notification of 970422 Meeting W/Util in Rockville,Md to Discuss Licensee Resolution of Issues Related to Operability of Emergency Equipment Cooling Water Sys at Fermi-2 Plant ML20138J7671997-02-0505 February 1997 Informs That NRC Plans to Administer Generic Fundamentals Exam Section of Written Operator Licenseing Exam on 970409. Ltr W/Copy to Chief,Operator Licensing Branch Must Be Submitted to Listed Address in Order to Register Personnel ML20133P4211997-01-21021 January 1997 Notification of 970129 Meeting W/State of Mi & FEMA in Rockville,Md to Discuss Potential Alternative Approaches to Management of Dose Assessment for Protective Action Decision Making W/Respect to Emergency Planning ML20133L7711997-01-0202 January 1997 Requests Fr Publication of Notice of Issuance of Amend to License DPR-9.Amend Will Allow Certain Equipment & Instruments to Be Removed from Svc from Short Periods of Time to Allow for Maint,Testing,Insp & Mods ML20132F4961996-12-20020 December 1996 Notification of 970109 Meeting W/Listed Attendess in Rockville,Md to Discuss Potential Alternative Approaches to Mgt of Dose Assessment for Protective Action Decision Making W/Respect to Emergency Planning ML20134P9491996-11-26026 November 1996 Notification of drop-in Meeting W/Fermi 2 Senior Vice Presidents in Rockville,Md to Discuss Performance During Fifth Refueling Outage,Licensees New Operational Excellence Plan & Other Items of General Interest ML20134J6061996-11-14014 November 1996 Informs That NRC Staff Decided to Review Attached SE Re Control Rod Overtravel Alarm,Performed by Detroit Edison Co for Plant ML20129A7671996-10-10010 October 1996 Requests Fr Publication of Notice of Consideration of Issuance of Amend to License DPR-9 & Proposed NSHC Determination & Opportunity for Hearing on 960829 Request to Allow Certain Equipment to Be Removed from Svc ML20149L1141996-02-20020 February 1996 Notification of 960301 Meeting W/Licensee in Rockville,Md to Discuss Licensee Proposed Design Criteria Spec for Cchvac Structural Requalification 1999-09-28
[Table view] |
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,g UNITED STATES 8 smerg\ NUCLEAR REGULATORY COMMIS$10N ItEGION 111
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sta= totvw. stumois soint FE8101956 MEMORANDUM FOR: uis A. Reyes, Chief, Operations Branch THRU: . G. Guldemond, Chief, Operational Programs Section FROM: F. A. Maura, Reactor Inspector
SUBJECT:
AREAS OF DISAGREEMENT WITH DETROIT EDIS0N COMPANY - DIESEL GENERATOR MEETING OF JANUARY 24, 1986 At the January 24, 1986, diesel generator meeting with representatives of the Detroit Edison Company and its consultants, three areas of strong disagreement between myself and the licensee / vendor were discussed. These areas are:
- 1. The lack of a visual inspection of the upper crankshaft main bearing (loaded half) and journal surfaces following the planned demonstration runs on EDG Nos. 11 and 13,
- 2. The attitude of the licensee in response to a question concerning what action they planned, or would consider, if additional bearing failures occurred during the demonstration runs, and,
- 3. The implied cause of failure of EDG No.13 connecting rod bearing No. 3.
My positions on each issue are as follows:
Need for Visual Inspection of Bearing and Journal Surfaces i Prior to the November-December 1985 bearing failures, I had accepted the I vendor's method of identifying failed main bearings by the use of a 0.002" feeler gauge gap check. However, the latest series of severe bearing distress 1 demonstrated to me that the gap check is only an indication that the bearing has been severely overheated. For example, all the bearing gap checks made on EDG fil prior to its disassembly on December 1985 were satisfctory. Upon disassembly, main bearings #13 UT, 8 UT, .nd 5 UT were found severely distressed, f6 UT and 9 UT moderately distressed, and f3 UT lightly distressed. An inspection of the main journals showed large areas of aluminum transfer on #5 and 6. moderate on #8 and 9, and small on f3. Number'13 was not recorded. Following its reassembly on February 1985, the unit had
- undergone the post-maintenance bearing break-in test in accordance with the I
vendor's recomendations. It involved runs at various speeds and loads covering a total of 9 starts and 59 hours6.828704e-4 days <br />0.0164 hours <br />9.755291e-5 weeks <br />2.24495e-5 months <br /> of operation. Prior to its inspection on December 1985, the new bearings and new shaft had accumulatd a total of 34 starts and 125 hours0.00145 days <br />0.0347 hours <br />2.066799e-4 weeks <br />4.75625e-5 months <br /> of operation.
l 8607170008 860709 PDR FOIA l PUNTENN86-244 PDR
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Luis A. Reyes 2 FEE 1019E5 Another example of the gap check failing to warn of impending bearing failure occurred during the break-in run of EDG #11 in late December 1985. After 18.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> of operation and 6 slow starts, bearing f6 failed the gap check. All other bearings were gap checked satisfactorily . Following bearing f6's replacement, the break-in test was restarted and bearing #5 failed the gap check after only an additional 1.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> of operation and four slow starts.
i During the meeting, neither the licensee nor the vendor would state what criteria defines a defective bearing; however, they did indicate that when i aluminum is transferred to the journal, the bearing life is considerably .
a shortened. Our consultants have stated that once metal transfer takes place, )
it aggravates itself and eventually the bearing will fail. However, the 1 remaining bearing life, whether a few hours or a few days, cannot be i predicted.
Because of these experiences and statements concerning bearing / journal condition, I strongly feel that the only way we can assure that the licensee !
has probably corrected the diesel problems, and that the diesels should perfonn satisfactorily for the duration of the envelope period, is to visually detemine the condition of the bearing and journal surfaces at the completion of the demonstration run. Since the vendor strongly feels that removing the bearing loaded half for inspection destroys the beneficial effects of the break-in and seasoning runs, the licensee must repeat both runs following re-installation of the bearings. That should satisfy the vendor and our l Concerns. ]
During the conference call between Region III and NRR on January 28, 1986, the
- subject of what constitutes a " reliable" engine demonstration was discussed.
Because of an apparent misuncerstanding on the part of some of the participants as to what constitutes a reliability demonstration or l
qualification run on the diesels, I want to explain my position on this subject. Qualification and reliability runs are defined in IEEE Standard 387-1977 and Regulatory Guide 1.108, respectively. Fairbanks Morse diesel I must have been qualified at the factory by the performance of 300 valid start I and loading tests without exceeding three failures. (The test results are normally reviewed by NRR.) In addition, the Femi 2 diesels were subjected 4
,l to the reliability requirements of Reg. Guide 1.108 during the preoperational test program. We know'that for some reason the Femi 2 diesels are not performing like the units which were used in the vendor's qualification tests. Femi 2 diesels' poor perfomance record could be used to invalidate their qualification. That being the case, 30 or 40 starts, as proposed by the licensee, fall far short of the requirements of IEEE 387-1977. One or two fuel cycles later the number of starts, assuming no bearing damage occurs, would still be short of the requirement. For that reason the licensee carefully chose to call their proposed test program a " demonstration run" and not a qualification or reliability test program. '
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l Luis A. Reyes 3 FE ME The initial concept, discussed with the licensee in late December 1985, was to have a " lead engine" at Fermi which by the number of successful starts during its demonstration run (after bearing and journal inspection) somewhat guaranteed the performance of the other three. Since then a second engine has been added to the demonstration run. While I am not proposing a program of the extent required by IEEE 387-1977, I am of the opinion that the bearing and journal inspections must extend beyond one fuel cycle.
i One last observation, a significant weakness exists in the Reg. Guide 1.108 definition of what constitutes an engine failure. In accordance with the Reg.
Guide, an engine that destroys itself after one hour of successful loaded operation does not constitute a failure and is not reportable. Based on that definition, the Femi 2 diesels are reliable engines irregardless of their repeated bearing problems. The Reg. Guide should be revised to correct that error.
Licensee's Planned Action If Demonstration Run Is Not Successful In response to a question, the licensee stated that if additional bearing damage was experienced during the demonstration run they would just be replaced and another demonstration run perfonned. The licensee apparently has failed to recognize that what is at stake is the NRC's confidence in the
. reliability of their on-site emergency power source. The confidence in these l
engines is not regained by a "two-out-of-three" approach.
In the absence of an unquestionable explanation regarding the specific cause I
of future failures, specifically during the demonstration run or while in the
- i envelope of that run during the first fuel cycle, serious consideration must be given to the replacement of those engines.
Implied Cause of Failure of EDG No.13 Connecting Rod Bearing No. 3 During the meeting, the licensee stated the failure of the No. 3 connecting
)
rod bearing on EDG No. 13 was caused by misassembly. The licensee's
" evidence" consists of fretting found on the connecting rod and cap mating surfaces and a break-away torque reading of 100 ft. lbs. on one bolt nut. The other nut had a break-away torque of 210 ft. Its. I consider the evidence extremely weak for the following reasons:
- 1. The fretting could have been caused after the beraing was destroyed since the engine experienced over 100 revolutions following the bearing damage and before it was shutdown.
- 2. Break-away torque readings are not an accurate measurement of actual torque values at the time of assembly for various reasons.
l Luis A. Reyes 4 FE0 1 0 13Ei
- 3. Other bolts were found with low torque readings similar to No. 3. Their bearings were not damaged and no fretting was noted in their cap surface. 1 For example, No. I connecting rod on EDG #13 had break-away torque i readings of 150.and 180 ft. Ibs., and #3 connecting rod bearing on EDG
- 12 had readings of 100 and 175 ft. lbs. which overall are lower than those on the nuts of the damaged connecting rod.
- 4. The reinstallation procedures, signoff and QA witnessing of the bolt torquing indicate that everything was done correctly. If the licensee now says mistakes were made, then their own program for maintenance and operational quality control is questionable at best.
Based en the above, the licensee failed to explain why they are convinced that misassembly was the cause of the failure, sit":
F. A. Maura Reactor Inspector -
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