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Category:SAFETY EVALUATION REPORT--LICENSING & RELATED ISSUES
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Util 831103 Response Acceptable ML20236A3981987-10-15015 October 1987 Safety Evaluation Re Potential Hazards Associated W/ Operation of & Potential Explosion Accidents at Rockwood Stone,Inc Quarry.Hazards Considered Insignificant,Based on Util Confirmatory Analysis & Independent NRC Evaluation ML20235S8731987-10-0606 October 1987 Safety Evaluation Re First 10-yr Interval Inservice Insp Program.Relief Granted from Exam & Testing Requirements of ASME Code & Alternate Methods Imposed Through Document ML20236D7421987-07-28028 July 1987 Safety Evaluation Re Main Steam Instrument Line Leaks. Licensee Satisfactorily Resolved Problems Re Main Steam Instrument Line Leaks Which Occurred in Jan 1987 & Recurred in Apr 1987 ML20206B5371987-04-0707 April 1987 Safety Evaluation Supporting Util Request to Amend License Condition 2.C(10), Emergency Diesel Generator Lube Oil Surveillance Program. NRC Does Not Agree Condition Should Be Revised by Substituting for Mar 1985 Ltr ML20207R8541987-03-12012 March 1987 Safety Evaluation Re Facility Mark I Containment Vacuum Breaker Structural Integrity.Licensee Restored Safety Margins of Breakers by Replacing Critical Parts W/Adequate Matl.Corrective Action Acceptable ML20212E3161987-02-27027 February 1987 Safety Evaluation Re Operation of Rockwood Stone,Inc Quarry Near Plant ML20212J8421987-02-26026 February 1987 Safety Evaluation Approving Individual to Serve as Shift Operations Advisor,Per Generic Ltr 84-16 IR 05000341/19850501987-01-16016 January 1987 Safety Evaluation Re Proposed Fire Protection Mod to Independent Alternative Safe Shutdown Capability to Satisfy Open Items in Insp 50-341/85-50 ML20215E0061986-12-12012 December 1986 Safety Evaluation Supporting Util Responses to Generic Ltr 83-28,Item 2.1 (Part 1) Re Equipment Classification of Reactor Trip Sys Components ML20203L5701986-08-19019 August 1986 Safety Evaluation Supporting Proposed Tech Specs Re Alternative Shutdown Sys.Acceptability Based,In Part,On Performance of Tests in Accordance W/Reg Guide 1.68, Initial Test Programs for Water-Cooled Nuclear Plants ML20207H5551986-07-16016 July 1986 SER Re Corrective Actions for Emergency Diesel Generators. Concurs W/Licensee Proposed Special Bearing Insp,Provided Envelope Provided by Demonstration Test Program Not Exceeded ML20154L4261985-04-18018 April 1985 Safety Evaluation Supporting 1983 ASME Code,Section XI, Paragraph IWV-3520 Requirement for Periodic Closure Verification Testing of Normally Closed Check Valves w/safety-related Functions 1999-05-05
[Table view] Category:TEXT-SAFETY REPORT
MONTHYEARML20217N4381999-10-25025 October 1999 Safety Evaluation Supporting Amend 17 to License DPR-9 ML20217P3551999-10-22022 October 1999 LER 99-S01-00:on 990922,loaded 9mm Handgun Was Discovered on Truck Cargo Area of Vehicle Inside Protected Area.Caused by Inadequate Vehicle Search.Guidance in Procedures & Security Training to Address Multiple Vehicle Searches Was Provided NRC-99-0095, Monthly Operating Rept for Sept 1999 for Fermi 2.With1999-09-30030 September 1999 Monthly Operating Rept for Sept 1999 for Fermi 2.With NRC-99-0067, Monthly Operating Rept for Aug 1999 for Fermi 2.With1999-08-31031 August 1999 Monthly Operating Rept for Aug 1999 for Fermi 2.With NRC-99-0065, Monthly Operating Rept for July 1999 for Fermi 2.With1999-07-31031 July 1999 Monthly Operating Rept for July 1999 for Fermi 2.With NRC-99-0088, Detroit Edison Co Enrico Fermi Atomic Power Plant,Unit 1 Annual Rept for Period 980701-990630. with1999-06-30030 June 1999 Detroit Edison Co Enrico Fermi Atomic Power Plant,Unit 1 Annual Rept for Period 980701-990630. with NRC-99-0064, Monthly Operating Rept for June 1999 for Fermi 2.With1999-06-30030 June 1999 Monthly Operating Rept for June 1999 for Fermi 2.With NRC-99-0062, Monthly Operating Rept for May 1999 for Fermi 2.With1999-05-31031 May 1999 Monthly Operating Rept for May 1999 for Fermi 2.With ML20206J9301999-05-10010 May 1999 SER Concluding That Util Adequately Addressed Actions Requested in GL 95-07, Pressure Locking & Thermal Binding of Safety-Related Powered-Operated Gate Valves ML20206G5081999-05-0505 May 1999 Safety Evaluation Approving Request for Relief PR-8,Rev 2 on Basis That Licensee Committed to Meet All Related Requirements of ASME OM-6 Std & PR-12 on Basis That Proposed Alternative Will Provide Acceptable Level of Safety NRC-99-0022, Monthly Operating Rept for Apr 1999 for Fermi 2.With1999-04-30030 April 1999 Monthly Operating Rept for Apr 1999 for Fermi 2.With ML20205Q7141999-04-15015 April 1999 Safety Evaluation Supporting Amend 16 to License DPR-9 ML20205P9721999-03-31031 March 1999 Monthly Operating Rept for Mar 1999 for Fermi 2 ML20204E0371999-03-17017 March 1999 Safety Evaluation Accepting Licensee Request for NRC Approval of Alternative Rv Weld Exam,Per Provisions of 10CFR50.55a(a)(3)(i) & 10CFR50.55a(g)(6)(ii)(A)(5) for Plant,Unit 2 for 40-month Period ML20204D0361999-02-28028 February 1999 Monthly Operating Rept for Feb 1999 for Fermi 2 ML20198S3341999-01-0606 January 1999 Safety Evaluation Supporting Amend 15 to License DPR-9 NRC-99-0005, Monthly Operating Rept for Dec 1998 for Fermi 2.With1998-12-31031 December 1998 Monthly Operating Rept for Dec 1998 for Fermi 2.With ML20207B7491998-12-31031 December 1998 1998 Annual Operating Rept for Fermi 2 ML20205Q9621998-12-31031 December 1998 Revised Monthly Operating Rept for Dec 1998 for Fermi 2 NRC-99-0021, 1998 Annual Financial Rept for Detroit Edison Co. with1998-12-31031 December 1998 1998 Annual Financial Rept for Detroit Edison Co. with NRC-98-0153, Monthly Operating Rept for Nov 1998 for Fermi 2.With1998-11-30030 November 1998 Monthly Operating Rept for Nov 1998 for Fermi 2.With NRC-98-0160, Monthly Operating Rept for Oct 1998 for Fermi 2.With1998-10-31031 October 1998 Monthly Operating Rept for Oct 1998 for Fermi 2.With ML20154R2331998-10-21021 October 1998 Safety Evaluation Supporting Amend 13 to License DPR-9 ML20154L1031998-10-14014 October 1998 Safety Evaluation Accepting Licensee Response to NRC Bulletin 95-002, Unexpected Clogging of Residual Heat Removal Pump Strainer While Operating in Suppression Pool Cooling Mode NRC-98-0139, Monthly Operating Rept for Sept 1998 for Fermi,Unit 2.With1998-09-30030 September 1998 Monthly Operating Rept for Sept 1998 for Fermi,Unit 2.With ML20154H8161998-09-30030 September 1998 Rev 0 to COLR Cycle 7 for Fermi 2 ML20153B8811998-09-18018 September 1998 Safety Evaluation Accepting Request for Relief from Certain Requirements of ASME Boiler & Pressure Vessel Code,Section Xi,For Plant,Unit 2 ML20151X0651998-09-11011 September 1998 Safety Evaluation Re Inservice Testing Program Relief Request VR-63 for Plant NRC-98-0111, Monthly Operating Rept for Aug 1998 for Fermi 2.With1998-08-31031 August 1998 Monthly Operating Rept for Aug 1998 for Fermi 2.With ML20153B7921998-08-31031 August 1998 Rev 0 to Fermi 1 Sar ML20237E1171998-08-25025 August 1998 Safety Evaluation Accepting Licensee Relief Requests for First 10-yr Interval Inservice Insp Nondestructive Exam Program ML20236X8611998-08-0505 August 1998 SER Related to Revised Feedwater Nozzle Analysis to Facility Operating License NPF-43,Enrico Fermi Nuclear Power Plant, Unit 2 NRC-98-0109, Monthly Operating Rept for July 1998 for Fermi 21998-07-31031 July 1998 Monthly Operating Rept for July 1998 for Fermi 2 ML20236K3261998-07-0101 July 1998 SER Accepting Licensee Response Related to Revised Feedwater Nozzle Analysis to License NPF-43 for Enrico Fermi Nuclear Power Plant,Unit 2 NRC-98-0097, Monthly Operating Rept for June 1998 for Fermi,Unit 21998-06-30030 June 1998 Monthly Operating Rept for June 1998 for Fermi,Unit 2 NRC-98-0127, Annual Rept for Period 970701-9806301998-06-30030 June 1998 Annual Rept for Period 970701-980630 NRC-98-0079, Monthly Operating Rept for May 1998 for Fermi 21998-05-31031 May 1998 Monthly Operating Rept for May 1998 for Fermi 2 NRC-98-0076, Monthly Operating Rept for Apr 1998 for Fermi 21998-04-30030 April 1998 Monthly Operating Rept for Apr 1998 for Fermi 2 NRC-98-0072, Monthly Operating Rept for Mar 1998 for Fermi 21998-03-31031 March 1998 Monthly Operating Rept for Mar 1998 for Fermi 2 NRC-98-0050, Monthly Operating Rept for Feb 1998 for Fermi 21998-02-28028 February 1998 Monthly Operating Rept for Feb 1998 for Fermi 2 NRC-98-0019, Monthly Operating Rept for Jan 1998 for Fermi 21998-01-31031 January 1998 Monthly Operating Rept for Jan 1998 for Fermi 2 ML20198L4241998-01-0808 January 1998 Safety Evaluation Accepting Proposed Rev 2 to Relief Request VR-51 Under Fermi 2 Pump & Valve Inservice Testing Program Per 10CFR50.55a(f)(6)(i) for First 10-yr Interval NRC-98-0015, Monthly Operating Rept for Dec 1997 for Fermi 21997-12-31031 December 1997 Monthly Operating Rept for Dec 1997 for Fermi 2 ML20217N3821997-12-31031 December 1997 Annual Operating Rept for 970101-1231 NRC-98-0053, 1997 Annual Financial Rept for Detroit Edison Company1997-12-31031 December 1997 1997 Annual Financial Rept for Detroit Edison Company ML20205Q9601997-12-31031 December 1997 Revised Monthly Operating Rept for Dec 1997 for Fermi 2 NRC-97-0141, Deficiency Rept Re Malfunction of EDG Number 11 Automatic Voltage Regulator (AVR) Printed Circuit Board Rev B,Due to Failure of Operational Amplifier U8 Chip.Avr Board Rev B Was Sent Offsite to Independent Engineering Facility1997-12-23023 December 1997 Deficiency Rept Re Malfunction of EDG Number 11 Automatic Voltage Regulator (AVR) Printed Circuit Board Rev B,Due to Failure of Operational Amplifier U8 Chip.Avr Board Rev B Was Sent Offsite to Independent Engineering Facility ML20197A9921997-12-15015 December 1997 Rev 0 to Efp,Unit 1 Fermi 1 Sar NRC-97-0131, Monthly Operating Rept for Nov 1997 for Fermi 21997-11-30030 November 1997 Monthly Operating Rept for Nov 1997 for Fermi 2 ML20248H1151997-10-31031 October 1997 Rev 1 to Colr,Cycle 6 for Fermi 2 1999-09-30
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\*****/ SAFETY EVALUATION REPORT FERMI-2 FMERGENCY DIESEL GENERATOR ENGINE LUBE OIL / REARING SURVEILLANCE TEST PROGRAM
1.0 INTRODUCTION
As a result of the emergency diesel generator (EDG) engine bearing failure which occurred in January 1985, the Detroit Edison Company (Deco or the Licenseei proposed an EDG engine lube oil surveillance test program to en-sure the continued reliability of the EDGs. The program was described to the NRC staff by DECO in letters dated March 6, March 14, and March 15, 1985.
The NRC staff's evaluation and acceptance of the proposed program was docu-mented in Supplement No. 5 to the Fermi-? SER (NUREG-0798) and the following license condition cited in the Fermi-? Operating License No. NPF-43 under Paragraph 2.C.:
"(10) DECO shall implement its commitments regarding the surveil-lance program for the lubricating oil system of the emergency diesel generators as described in its letters dated March 6, March 14, and March 15, 1985."
The surveillance progran required quarterly disassembly and inspection of each EDG engine oil filter and spectrographic analysis of the oil filter media as a means of predicting incipient bearing failures. As a result of additicnal EDG engine bearing failures in November 1985, and December 1985, DECO proposed an augmented surveillance program which included periodic bearing inspections. In its July 16, 1986 letter accepting the augmented surveillance program proposed, the NRC staff required, among other thinos, that a gap check he performed on the thrust bearing of each EDG engine after every automatic unprelubricated (dry) start or every six months, whichever occurred first; and that a special visual inspection of the upper thrust bearing of EDG engine No.13 he performed at the next scheduled 18-month Technical Specification surveillance requirement, or at the time the envelope of engine starts established by the licensee's demonstration test program (described in DECO letter dated March 18, 19861 was exceeded. In a letter dated October 14, 1986, the licensee comitted to performing the bearing inspections as defined in the NRC staff's July 16, 1986 letter proposing that a time period of seven days be permitted to perform the bearing gap checks, and a time period of 30 days be permitted to perform the visual inspection of the EDG No.13 engine upper main thrust bearing, to allow for flexibility in scheduling and performing these special inspections, and avoid unnecessary plant shutdowns. The staff accepted DECO's proposed timing for the performance of these special inspections in a letter dated January 9, 1987, with the condition that the plant be in the appropriate EDG Technical Specification limited condition of operation (LCO) if the window 1 of test performance is exceeded. )
By letter dated January 28, 1987, DECO submitted a proposed license amend-ment, to revise License Condition ?.C(10) to delete from the EDG lube oil I surveillance ornaram, the requirement for the quarterly disassembly and )
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inspection of engine lube oil filters and the spectrographic analysis of the oil filter media; and to include in the amended license condition, the special engine bearing inspections discussed in the proceeding para-graph above. Following is a report of the staff's review, findings and conclusions relative to the January 28, 1987 license amendment proposal.
?.0 EVALUATION The current license condition (Paragraph 2.C(101 of Operating License No. NPF-43), which reouires the implementation of the Fermi-2 EDG engine lube oil surveillance program, consists of two major activities es follows:
(1) The quarterly disassembly, inspection and replacement of engine oil filters. If bearing material is found in the oil filter the main bearings of that ergine are to be inspected, i.e, a gap check per-fomed. In addition, a spectrographic analysis is to be perfomed of the cil filter media and deposits that are found during the quar-terly inspection of the filter.
(2) The aralysis of engine oil samples on a monthly basis for trend determinations. i By letter dated January 28, 1987, the licensee proposed deletion of surveillances relating to the lube oil disassembly, filter inspection and analysis. The justification for this deletion was based on the accumulated data that have been obtained from the inspections per-fomed to date. Deco's evaluation of these data indicates that the lube oil filter inspections performed were ineffective in predicting incipient bearing failure. It was for this reeson that the lube oil filter disassembly, inspection, and oil filter media analyses were initially proposed.
As discussed in the staff's SER dated iluly 16, 1986 EDG Nos. 11 and 13 experienced bearing failures in late 1985. The lube oil filter in-spections/ analyses prior to the bearing failures did not indicate any adverse conditions. In addition, the inspection following the bearing failures revealed that numerous metallic fragnents were visible prior to removing the lube oil filters from the filter vessel. Upon completion of the disassembly of the filter redia and subsequent spectro- l oraphic analysis, it was fcund that the detailed aralysis was no more J infomative that the visual inspection of the exterior of the filter
)
media. Inspections performed since repairs o' the EDGs were made, have 1 also not revealed any new infomation concerning bearing status.
Additionally, the EDG vendor has recommended that the quarterly filter inspections be performed, without the disassembly of the filter media and subsequent replacement of the filter.
DECO has indicated that there is also an advantage to diesel operation with the elimination of the freover.t filter replacement. Elimination of unnecessary filter changes will reduce the likelihood of contanipating the lube oil system.
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! The licensee, although proposing deletion of the ' detailed filter media j inspection, plans to continue the lube oil monitoring program.
in an attempt to understand the significance o' the licensee's proposal l relative to the modification of the License Condition, one must first !
understand when bearing gap checks are required. Currently, when a lube.-
oil analysis or' oil filter analysis reveals unfavorable results (i.e.,
specified limits are exceeded), a EDG bearing gap check is required to bc 4
performed. . This is in addition to the normally required 18 month bearing -
gap inspection. Also, following the late 1985 bearing failures, DECO com-mitted to perform a EDG bearing gap check every 6 months or a gep check-
- after every unplanned start, whichever occurs first, and an inspection of
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EDG No. 13 upper thrust bearing as described in the staff's SER dated l July 16, 1986. It should be noted that the Fermi-2 License Condition does l not reference any of these required gap checks other than those that are identified through the lube oil surveillance program.
In summary, the licensee's rationale to support the' modified and augmented j EDG surveillance program is a follows:
i The lube oil filter redia inspection has not been e#fectiv4 in l
monitoring bearing condition; i'
Examination of the filter exterior media will continue to be conducted l on a periodic basis to provide information on the gereral condition of the filter; a
i The increased frecuency of gap checks as' discussed above would be more i effective in providing information about incipient bearing failure than j would the quarterly disassembly and inspection of-filter and filter media; i
Engine lube oil sampling will' continue to be performed and will provide !
l revelant information on the condition of the oil; I Elimination of quarterly filter replacement will reduce the l potential for introducing contamination into the lube oil system.
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3.0 CONCLUSION
i s Based on its review of the information contained in the licensee's
{ February 28, 1987 submittal, the staff agrees that there appears to 4 be no safety benefit to continue to require the licensee to disassemble i the EDG engine oil filters cuarterly as a means of predicting incipient i bearing failure. The modified surveillance program proposed; i.e. the monthly sampling of engine lube oil and the augmented bearing gap checks, I should be sufficient for monitoring ergine bearing conditions _ However,
! the staff does not agree that License Condition 2.C(10) be revised by j simply substituting, by reference, the February 28, 1987 letter for the'
- March 1985 letters currently specified in the plant operating license.
The sta'f believes that the license condition should be self-explanatory to the maximum extent possible, and recommends that the following license condition, which would eccompass the modified and augmented EDG surveil-lance program proposed, be consider by the licensee as an_' alternative:
l (10) Emeroency Diesel Generator (EDG) Enoine Inspection Proaram (a' DECO shall perform gap checks on each EDG engine thrust bearing after every automatic, unprelubricated engine start or every six months, whichever occurs first, within seven days of the engine start. The plant shall be in the appropriate Technical Specific-ations LCO if the window of test performance is exceeded.
(h) DECO shall perform a visual inspection of the EDG No.13 engine upper main thrust bearing at the next scheduled 18-month Technical Specification surveillance requirement, or at'the time the envelope of engine starts established in the demonstratier. test program (des-cribed in DECO letter dated March 18,1986) is exceeded, whichever occurs first, within 30 days from the time the inspection is scheduled to be performed.
(c) DECO shall anclyze EDG engine lube oil samples nonthly. Should 4 the samples analy7ed identify foreign matter / deposits which could :
degrade engine bearing performance, DECO shall inform the NRC immedittely and suhrit a report of analysis results and the detail corrective action to be taken within 15 working days following such notification.
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