CNL-15-143, the Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - Closure Report
| ML15212A818 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry, Watts Bar, Sequoyah  |
| Issue date: | 07/31/2015 |
| From: | James Shea Tennessee Valley Authority |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| CNL-15-143 | |
| Download: ML15212A818 (18) | |
Text
Tennessee Valley Authority, 1101 Market Street, Chattanooga, Tennessee 37402 CNL-15-143 July 31, 2015 10 CFR 50.4 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Browns Ferry Nuclear Plant, Units 1, 2, and 3 Renewed Facility Operating License Nos. DPR-33, DPR-52, and DPR-68 NRC Docket Nos. 50-259, 50-260, and 50-296 Sequoyah Nuclear Plant, Units 1 and 2 Facility Operating License Nos. DPR-77 and DPR-79 NRC Docket Nos. 50-327 and 50-328 Watts Bar Nuclear Plant, Unit 1 Facility Operating License No. NPF-90 NRC Docket No. 50-390
Subject:
The Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - Closure Report
Reference:
- 1. TVA letter to NRC, Additional Information Regarding March 28, 2013, Public Meeting With NRC Regarding The Tennessee Valley Authoritys (TVA)
Commercial Grade Dedication Recovery Project, dated April 30, 2013 (ML13123A163)
- 2. TVA letter to NRC, The Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project Plan - July 2013 Status Report, dated July 31, 2013 (ML13220A102)
- 3. TVA letter to NRC, The Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - October 2013 Status Report, dated October 31, 2013 (ML13309A747)
Nuclear Regulatory Commission CNL-15-143 Page 2 July 31, 2015
- 4. TVA letter to NRC, The Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - January 2014 Status Report, dated January 31, 2014 (ML14038A139)
- 5. TVA letter to NRC, The Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - April 2014 Status Report, dated April 30, 2014 (ML14126A843)
- 6. TVA letter to NRC, The Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - July 2014 Status Report, dated July 31, 2014 (ML14212A748)
- 7. TVA letter to NRC, The Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - October 2014 Status Report, dated October 31, 2014 (ML14304A724)
- 8. TVA letter to NRC, The Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - January 2015 Status Report, dated January 30, 2015 (ML15030A485)
- 9. TVA letter to NRC, "The Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - April 2015 Status Report," dated April 30, 2015 (ML151210A264)
The purpose of this letter is to provide the Nuclear Regulatory Commission (NRC) staff with the Commercial Grade Dedication (CGD) Recovery Project Closure Report.
In Enclosure 2 of the Reference 1 letter, Tennessee Valley Authority (TVA) provided the NRC with a TVA Nuclear Power Group CGD Recovery Project Action Plan Summary that included two commitments. In Commitment 1, TVA committed to complete a comprehensive evaluation of CGD items installed between September 1995 and November 2011 for the operating fleet, and correct any identified deficiencies by December 31, 2014. As discussed with the NRC during a teleconference on December 15, 2014, and documented in Reference 8, TVA revised the completion date for the CGD Recovery Project from December 31, 2014, to May 31, 2015.
As of May 28, 2015, TVA had completed all of the evaluations described in the TVA Nuclear Power Group CGD Recovery Project Action Plan Summary. A summary of the results are documented in the enclosure to this letter.
In Commitment 2, TVA committed to provide the NRC with periodic written updates regarding progress of the project by the last day of July, October, January, and April of each year until the project is completed, beginning with the first written report to be submitted by July 31, 2013.
The quarterly status update letters are provided in References 2 through 9. Based on the completion of Commitment 1, above, this letter is the final quarterly status update.
No issues or testing failures were identified that resulted in declaring plant equipment to be inoperable or required replacement of a basic component.
Nuclear Regulatory Commission CNL-15-143 Page 3 July 31, 2015 On May 29, 2015, TVA notified the NRC Region II Branch Chief that TVA had completed all of the evaluations described in the TVA Nuclear Power Group CGD Recovery Project Action Plan Summary. Additionally, TVA committed to provide a final closure report by July 31, 2015.
The enclosure to this letter provides the TVA Nuclear CGD Recovery Project - Closure Report.
There are no new regulatory commitments contained in this letter. Should you have any questions, please contact Tom Hess at (423) 751-3487.
Respectfully, Digitally signed by J. W. Shea DN: cn=J. W. Shea, o=Tennessee J. W. Shea Valley Authority, ou=Nuclear Licensing, email=jwshea@tva.gov, c=US Date: 2015.07.31 12:54:37 -04'00' J. W. Shea Vice President, Nuclear Licensing
Enclosure:
Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - Closure Report cc (Enclosure):
NRC Regional Administrator - Region II NRC Senior Resident Inspector - Browns Ferry Nuclear Plant NRC Senior Resident Inspector - Sequoyah Nuclear Plant NRC Senior Resident Inspector - Watts Bar Nuclear Plant NRR Project Manager - Browns Ferry Nuclear Plant NRR Project Manager - Sequoyah Nuclear Plant NRR Project Manager - Watts Bar Nuclear Plant
ENCLOSURE Tennessee Valley Authority Nuclear Power Group Commercial Grade Dedication Recovery Project - Closure Report BACKGROUND:
During a public meeting with the Nuclear Regulatory Commission (NRC) staff on March 28, 2013, Tennessee Valley Authority (TVA) described a broad set of actions being taken by the TVA Nuclear Power Group to address commercial grade dedication (CGD) program issues identified by the NRC in Watts Bar Unit 2 construction-related Integrated Inspection Report 05000391/2011607, dated September 30, 2011, and Integrated Inspection Report 05000391/2011610, dated February 3, 2012. To further address commercial grade dedication program issues, TVA made a commitment to complete a comprehensive evaluation of commercial grade dedication items installed between September 1995 and November 2011 for the operating fleet, and correct any identified deficiencies.
In a letter to the NRC dated July 1, 2013,1 TVA informed the staff that TVA Nuclear Power Group Commercial Grade Dedication Recovery Project Plan was approved for implementation and briefly described the plan. The CGD Recovery Project Plan describes the evaluation process being used to determine whether an adequate basis exists, is documented, and provides reasonable assurance that a commercial grade item to be used as a basic component will perform its intended safety function. The plan establishes the scope of the project, identifies the number of specific items that must be evaluated, and describes the grouping of items for evaluation by type, supplier, and time frame of procurement. The plan also describes documentation that TVA will generate during the evaluation process for items that are installed and/or currently in inventory; for items that are obsolete and through regular preventive maintenance are no longer installed in safety related applications; and for inventory items that have not been purchased or installed since Part 21, Reporting of Defects and Noncompliance, of Title 10 of the Code of Federal Regulations (CFR) was amended in 1995.
From April 2013 to April 2014, the CGD Recovery Project Team identified 22,340 unique Catalog Identifiers (CATIDs) that had been generated for CGD items across the TVA Nuclear Power Group Fleet since September 1995. Of this population, 17,343 unique CATIDs had been identified to be either not purchased or not installed. The remaining 4,997 unique CATIDs were evaluated, as described in the CGD Recovery Project Plan, and all 4,997 CATIDs were found to be acceptable as detailed below.
COMPLETION
SUMMARY
TVA followed the CGD Recovery Project Plan and completed all document revisions, testing and item evaluations. Items were grouped to closely match physical characteristics, evaluation criteria and testing/verification methods. Completion of the recovery plan scope did not result in any operability challenges or replacement of installed items. Document revisions of previously dedicated items resulted in re-testing items to verify additional critical characteristics. Test failures were entered into the corrective action process for disposition and evaluated for operability. No operability issues were identified and no installed items required replacement due to failure characteristics. Final disposition of test failures did not result in any items failing to perform their safety related functions or 10CFR21 reportability submittals.
1 TVA letter to NRC, The Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project Plan, dated July 1, 2013 (ML13189A133)
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ENCLOSURE Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - April 2015 Status Report As of May 28, 2015, from a population of 4,997 CATIDs that were purchased and are either in inventory or installed, all 4,997 CATIDs have been assessed against project plan review criteria, including the critical characteristics for acceptance (CCA). All 4,997 CATIDs were found to be acceptable.
During the effort to evaluate commercially dedicated parts against the applicable CCA, an additional gap was identified where critical characteristics to confirm seismic qualification/suitability were not adequately documented. This gap can be characterized as failing to adequately document the equipment seismic/structural qualification of the replacement items in accordance with TVA Nuclear Engineering Department seismic procedures and design standards. The assessment of seismic CCA information for seismic sensitive CATIDs has been completed. A total of 431 seismic CATIDS were evaluated and found to be acceptable.
The TVA Nuclear Power Group Commercial Grade Dedication Recovery Project was completed prior to the extended May 31, 2015, commitment date for project completion. During the final review and validation to support the CGD Recovery Project closure report, additional documentation was added to applicable packages to enhance the critical thinking used to support conclusions.
The status of all identified testing failures is summarized in the Table below.
PREVIOUSLY IDENTIFIED TESTING FAILURES Initial Status SR/PER CATID Item Failure Disposition Status Report Date Number Description Description (Open/
Closed)
July 31, 2013 SR 755044 CAE345C Overload Failed current carrying Purchased new heaters for Closed (PER 762570) Heaters due to incorrect test testing to revised criteria.
current All items passed testing.
July 31, 2013 SR 755092 BKG441M 1-1/4 Inch Failed dimensional test Used three point Closed (PER 762593) Copper - use of single measurement technique &
Couplings measurement point additional analyses to accept Items.
October 31, PER 793398 BDH517E Fuses Failed current clearing Based on EPRI TR- Closed 2013 PER 826788 20A, 250V testing by 25% longer 017218, Revision 1, Time Delay than criteria Guideline for Sampling in the Commercial-Grade Item Acceptance Process, the remaining inventory was scrapped. No record of safety-related application was identified.
However, if installed in SR application, the 25% longer clearing time would not degrade the component function during accident scenarios. PER 885910 to address additional 10 CFR 21 considerations.
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ENCLOSURE Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - April 2015 Status Report PREVIOUSLY IDENTIFIED TESTING FAILURES Initial Status SR/PER CATID Item Failure Disposition Status Report Date Number Description Description (Open/
Closed)
October 31, PER 794799 BXA282G Pressure Failed acceptance Defective pressure switch Closed 2013 PER 821184 Switch criteria for was scrapped. PER configuration, 885910 to address operating response, additional 10 CFR 21 repeatability, and considerations.
weight October 31, PER 793399 CKA398K Brass Failed threading Installed fitting acceptable Closed 2013 PER 821992 Tubing Tee testing based on completed Fittings conditional dedication.
PER 885910 to address additional 10 CFR 21 considerations.
October 31, PER 784385 CKJ806N Hydraulic Failed flash point test Revised flash point criteria Closed 2013 PER 793529 Fluid to lower value. Material PER 828658 acceptable for end use applications.
January 31, PER 827195 CRE543B Breather Failed testing criteria Material dispositioned as Closed 2014 Caps for material type acceptable with no effect on operability.
January 31, PER 827194 CRF195B Vent Caps Failed testing criteria Material dispositioned as Closed 2014 for material and acceptable with no effect dimension on operability. Additional dimensional inspection designated for this item.
January 31, PER 821151 BJV743J Overload Failed testing criteria Failed criteria Closed 2014 Heaters for resistance and inconsequential to overload dimensions heater operation. Pre-installation testing verifies proper operation. PER 885910 to address additional 10 CFR 21 considerations.
January 31, PER 826067 BVT390J Cable Failed testing criteria Deficient parts would have Closed 2014 Splices for wire size been self-revealing during dimensions installation. Material will be scrapped. PER 887333 to address additional 10 CFR 21 considerations.
January 31, PER 826791 AWT096Y Fuses Failed testing criteria 1 of 30 fuses tested did not Closed 2014 0.125A for current carrying meet current carrying capacity capability - fuse opened before thermal stability was reached. If installed, this fuse would have likely failed during normal operation and/or surveillance testing.
PER 885910 to address additional 10 CFR 21 considerations.
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ENCLOSURE Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - April 2015 Status Report PREVIOUSLY IDENTIFIED TESTING FAILURES Initial Status SR/PER CATID Item Failure Disposition Status Report Date Number Description Description (Open/
Closed)
January 31, PER 828735 BAG502L Fuses Failed testing criteria Test results reviewed and Closed 2014 1.6A for current clearing accurate. No record of time safety-related application was identified. Work orders initiated to replace non safety-related applications.
Remaining inventory scrapped per EPRI TR-017218, Revision 1, guidance. PER 932364 to address additional 10 CFR 21 considerations.
January 31, PER 830725 BVC946R Terminal Failed testing criteria Based on new information, Closed 2014 Lugs for material type item meets manufacturers specifications.
Manufacturing process involves copper barrel material and brass spade material. Mixed material manufacturing was not apparent based on initial review of product data sheets. New PER 905272 was generated to review test results and revise procurement documents to correct material type.
January 31, PER 830726 BYB188W Terminal Failed testing criteria Test method revised based Closed 2014 Lugs for material type on manufacturers specifications. Material retested and verified to meet criteria. Material acceptable to revised package.
January 31, PER 823813 BYM865Q Terminal Failed testing criteria Revised material attributes Closed 2014 Lugs for material type for copper concentration and item found acceptable.
January 31, PER 825115 CFF597C Polyethylene Failed testing criteria Retested tubing to proper Closed 2014 Tubing for pressure integrity test pressure and found acceptable.
January 31, PER 826424 BYL296B Insulating Failed testing criteria Initial criteria not critical. Closed 2014 Tape for tensile strength Revised criteria and retested for tape thickness and di-electric strength.
Item found acceptable.
January 31, PER 820855 CCA611R Pulley Failed testing criteria Incorrect material specified Closed 2014 Bushings for material type based on current manufacturing. Material acceptable to originally supplied material type.
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ENCLOSURE Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - April 2015 Status Report PREVIOUSLY IDENTIFIED TESTING FAILURES Initial Status SR/PER CATID Item Failure Disposition Status Report Date Number Description Description (Open/
Closed)
January 31, PER 825131 BQX704E Mandrel Pop Failed testing criteria Incorrect material specified Closed 2014 Rivets for material type for mandrel. Revised material type and tested additional samples for acceptance.
January 31, PER 823816 CPV360D Cable Failed testing criteria Package revised to test Closed 2014 Splices for material type material to the applicable ASTM standard versus providing minimum copper content for material type.
Material tested to more specific criteria and found acceptable.
January 31, PER 828659 CEH294T Pressure Failed testing criteria Incorrect data sheet in Closed 2014 Switch for weight package. Revised package to include correct data sheet.
January 31, PER 823818 BRN013X Resistors Failed testing criteria Incorrect dimensional Closed 2014 for dimensions tolerances applied.
Revised CGD package and amended dimensional test report for acceptance.
January 31, PER 824184 CFP436V Brass Failed testing criteria Revised criteria to brass Closed 2014 Tubing for material type alloy. A brass alloy plus Unions pressure testing supported acceptance.
January 31, PER 821083 CGX850P Brass Failed testing criteria Revised criteria to brass Closed 2014 Tubing for material type alloy. A brass alloy plus Unions pressure testing supported acceptance.
April 30, 2014 PER 845971 CFB485C HFA Relay Failed seismic criteria Evaluate and document Closed resolution of the non-conformance of 18 HFA relays. An additional relay from the lot tested to application specific criteria and passed seismic criteria, resolving the non-conformance issue.
April 30, 2014 PER 842727 BVT503M Resistor Failed dimensional Error occurred when Closed criteria selecting the critical characteristic dimension for resistor length and lead length. Resistors passed revised criteria.
April 30, 2014 PER 842713 BLA352D 30 Amp Failed current clearing Expanded sample testing Closed Fuse time per EPRI TR-017218, Revision 1, resulted in acceptance of the fuse lot.
April 30, 2014 PER 842712 BLA345A 200 Amp Failed current clearing Expanded sample testing Closed Fuse time. per EPRI TR-017218, Revision 1, resulted in acceptance of the fuse lot.
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ENCLOSURE Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - April 2015 Status Report PREVIOUSLY IDENTIFIED TESTING FAILURES Initial Status SR/PER CATID Item Failure Disposition Status Report Date Number Description Description (Open/
Closed)
April 30, 2014 PER 842728 CFD755Y 35 Amp fuse Failed current clearing Incorrect criteria initially Closed time specified. PEG Package revised. Additional testing provided acceptable results.
April 30, 2014 PER 842703 BWA522W 1.8 Failed leakage current Expanded sample testing Closed microfarad and working voltage per EPRI TR-017218, Capacitor Revision 1, resulted in acceptance of the capacitor lot.
April 30, 2014 PER 853916 CAC064M Resistor Failed dimensional Incorrect tolerance revised. Closed criteria Test report amended resulting in acceptance of the resistor lot.
April 30, 2014 PER 842702 APD135T Access Failed dimensional Dimensional criteria revised Closed Valve criteria based on end use considerations. Re-inspection of entire lot to revised criteria resulted in acceptance of the lot.
April 30, 2014 PER 860042 ADM954A 35 Amp Failed current clearing No material installed. Closed Fuses time Remaining material scrapped to prevent issue to the plant. PER 887333 to address additional 10 CFR 21 considerations.
April 30, 2014 PER 845579 BLN398N #22 AWG to Failed measurement Inspection verified a mixed Closed
- 14 AWG indicating a mixed bin bin of material. 100%
Splice (reducing 22 AWG to inspection performed to 14 AWG splice and remove deficient material non-reducing 14 AWG and scrap. Remaining to 14 AWG splice material sent to lab for mixed together) physical inspection.
PER 885910 to address additional 10 CFR 21 considerations.
April 30, 2014 PER 842128 CVD369R Exhaust Failed volumetric flow 10CFR21 Failure Closed Valves rate criteria Reportability was evaluated and determined that conditions identified in PER 887333 are not reportable.
No operability impact exists for the four valves (1-FCV-001-0004, -0011, -0022, and -0029) since CATID CVD369R was never installed E 6 of 15
ENCLOSURE Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - April 2015 Status Report PREVIOUSLY IDENTIFIED TESTING FAILURES Initial Status SR/PER CATID Item Failure Disposition Status Report Date Number Description Description (Open/
Closed)
April 30, 2014 PER 862599 CFM395R Sleeve Failed dimensional Incorrect dimensional Closed Fitting criteria tolerances specified and dimensions recorded beyond significant digits.
Material re-inspected to correct dimensional tolerances and accepted.
PER 932364 to address additional 10 CFR 21 considerations.
April 30, 2014 PER 844628 CAA979N Overload Failed contact The failure occurred during Closed Relay resistance - open testing and failed as open circuit contact, therefore, the relay is no longer viable for use.
This condition would be self revealing during the installation and testing process. Initially, a quantity of 10 relays from the lot of 19 were tested, with one resulting failure. Based on the one failure, the entire lot will be tested. PER 932364 to address additional 10 CFR 21 considerations.
April 30, 2014 PER 841713 CGJ609B Resistor Failed dimensional The resistor length and Closed PER 892013 criteria lead length dimensional deficiencies were found acceptable.
April 30, 2014 PER 848255 BYL400P 8 Amp Fuse Failed dimensional Material found acceptable Closed criteria based on new tolerance information. CGD documents revised and material accepted. PER 885910 to address additional 10 CFR 21 considerations.
April 30, 2014 PER 845243 CBB278A Resistor Failed power rating of The resistors are normally Closed resistor used in panel light indicators, where the resistors drop the circuit voltage to a value appropriate for the indicating lamp. Failed lots were scrapped and one lot found acceptable.
Procurement documents found acceptable for future purchases. PER 887333 to address additional 10 CFR 21 considerations.
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ENCLOSURE Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - April 2015 Status Report PREVIOUSLY IDENTIFIED TESTING FAILURES Initial Status SR/PER CATID Item Failure Disposition Status Report Date Number Description Description (Open/
Closed)
April 30, 2014 PER 867205 BVA247Y 7.5 Amp Failed current clearing Expanded sample testing, Closed Fuse time per EPRI TR-017218-R1, resulted in an additional fuse failing acceptance criteria. PER 891992 was issued to document and evaluate issue. Issue history evaluated for installed applications.
Inventory material not acceptable and scrapped.
Testing criteria and procurement documents determined to be acceptable for new procurement.
April 30, 2014 PER 867221 BDL448P 700 Amp Failed current clearing New acceptance criteria Closed Fuse time established based on UL 248-1. Expanded sample testing per EPRI TR-017218, Revision 1, resulted in acceptance of the fuse lot.
April 30, 2014 PER 867220 BYF689H 15 Amp Failed current clearing Expanded sample testing Closed Fuse time per EPRI TR-017218, Revision 1, resulted in acceptance of the fuse lot.
April 30, 2014 PER 863778 BYV699G 0.5 Amp Failed current clearing Inventory material not Closed Fuse time acceptable and scrapped.
Testing criteria and procurement documents determined to be acceptable for new procurement. PER 885910 to address additional 10 CFR 21 considerations.
July 31, 2014 PER 842729 CHB326L Check Valve Failed material type Host component Closed determined to be QA-3 and material downgraded and scrapped.
July 31, 2014 PER 882147 BLR987K 4 Amp Fuse Failed current clearing Initial failure due to Closed time incorrect criteria.
Additional sample testing to revised criteria resulted in acceptable results.
July 31, 2014 PER 899140 ARB566W 200 Amp Failed current carrying Material not acceptable for Closed Fuse capacity plant use. History search identified no material installed in safety-related components.
July 31, 2014 PER 896388 CGJ885H Resistor Failed resistance and Material not acceptable for Closed power rating plant use and scrapped.
No changes identified for procurement documents.
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ENCLOSURE Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - April 2015 Status Report PREVIOUSLY IDENTIFIED TESTING FAILURES Initial Status SR/PER CATID Item Failure Disposition Status Report Date Number Description Description (Open/
Closed)
July 31, 2014 PER 882153 CFJ418P 10 Amp Failed dimensional Fuse diameter measuring Closed PER 901153 Fuse criteria 0.001 too small requires final review and material disposition.
July 31, 2014 PER 882164 CBT088Q 1 Amp Fuse Failed dimensional History search identified no Closed PER 899964 criteria material installed in safety-related components. No changes required to procurement documents.
July 31, 2014 PER 882141 ADM954A 35 Amp Failed current clearing PER 932364 addressed 10 Closed PER 899965 (SQN Fuse time CFR 21 considerations and Site) determined to NOT be reportable. History search identified no material installed in safety-related components. No changes required to procurement documents.
July 31, 2014 PER 880803 CDC572Q 50 Amp Failed voltage rating Expanded sample testing Closed Fuse per EPRI TR-017218, Revision 1, resulted in acceptance of the fuse lot.
July 31, 2014 PER 880819 BLA425C 1 Amp Fuse Failed current carrying Expanded sample testing Closed capacity and cracked per EPRI TR-017218, ferrules Revision 1, resulted in acceptance of the fuse lot.
Material with cracked ferrules dispositioned to be scrapped.
July 31, 2014 PER 882129 BLA414H 1.25 Amp Failed current clearing Expanded sample resulted Closed PER 898433 Fuse time in additional material failure. Material has been scrapped. Procurement documents have been cancelled and Item is designated as obsolete.
July 31, 2014 PER 900197 BYL598T 30 Amp Failed dimensional Fuse diameter measuring Closed (BFN Site) Fuse criteria 0.001 too large requires final review and material disposition. Based on review and application of revised tolerance, the material is acceptable July 31, 2014 PER 885235 BKY581W 1 Amp Fuse Failed current clearing Expanded sample resulted Closed PER 896391 time in additional material failure. Material not acceptable for plant use and scrapped. No changes identified for procurement documents.
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ENCLOSURE Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - April 2015 Status Report PREVIOUSLY IDENTIFIED TESTING FAILURES Initial Status SR/PER CATID Item Failure Disposition Status Report Date Number Description Description (Open/
Closed)
July 31, 2014 PER 895583 AEY065C 1.25 Amp Failed current clearing History search identified no Closed Fuse time material installed in safety-related components. No changes required to procurement documents.
July 31, 2014 PER 882169 BHQ577Y 0.25 Amp Failed current clearing Expanded sample testing Closed Fuse time per EPRI TR-017218, Revision 1, resulted in acceptance of the fuse lot.
July 31, 2014 PER 882149 BRE028R 20 Amp Failed current clearing Expanded sample testing Closed Fuse time per EPRI TR-017218, Revision 1, resulted in acceptance of the fuse lot.
July 31, 2014 PER 882150 CET176J 1.6 Amp Failed current clearing Expanded sample testing Closed Fuse time per EPRI TR-017218, Revision 1, resulted in acceptance of the fuse lot.
July 31, 2014 PER 882168 BBR516K 5 Amp Fuse Failed current carrying Expanded sample testing Closed capacity per EPRI TR-017218, Revision 1, resulted in acceptance of the fuse lot.
July 31, 2014 PER 885242 CJD815L 60 Amp Failed current carrying Expanded sample testing Closed PER 900219 Fuse capacity and per EPRI TR-017218, commercial failure Revision 1, resulted in acceptance of the fuse lot.
Remaining PER actions to review procurement requirements and dispositions failed material from a commercial perspective.
July 31, 2014 PER 895584 CHQ955H 1100 Amp Failed current clearing History search identified no Closed Fuse time material installed in safety-related components. PER 956198 identifies CGD testing and procurement documents acceptable.
July 31, 2014 PER 885244 BKY793D 60 Amp Failed current clearing Material not acceptable for Closed PER 896395 Fuse time plant use and scrapped.
No changes identified for procurement documents.
July 31, 2014 PER 880809 BTT498Q 50 Amp Failed voltage rating Expanded sample testing Closed Fuse per EPRI TR-017218, Revision 1, resulted in acceptance of the fuse lot.
July 31, 2014 PER 888324 BEE283N 30 Amp Failed current carrying Material not acceptable for Closed PER 912990 Fuse capacity plant use. History search identified no material installed in safety-related components. No changes required to procurement documents.
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ENCLOSURE Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - April 2015 Status Report PREVIOUSLY IDENTIFIED TESTING FAILURES Initial Status SR/PER CATID Item Failure Disposition Status Report Date Number Description Description (Open/
Closed)
July 31, 2014 PER 899963 BYL598T 30 Amp Failed current carrying PER 932364 addressed 10 Closed (SQN Fuse capacity and CFR 21 considerations and Site) dimensional criteria determined to NOT be reportable. History search identified no material installed in safety-related components. PER 966136 for Procurement Engineering to enhance CGD criteria.
July 31, 2014 PER 886874 CEP098J 30 Amp Failed current carrying Expanded sample testing Closed Fuse capacity per EPRI TR-017218, Revision 1, resulted in acceptance of the fuse lot.
October 31, PER 920903 ADM954A 35 Amp Failed current carrying Material not acceptable for Closed 2014 (BFN Site) Fuses capacity plant use and scrapped.
No material installed in safety-related applications.
October 31, PER 920910 CME546X 2.25 Amp Failed current carrying Material not acceptable for Closed 2014 Fuses capacity plant use in safety-related applications and scrapped.
No material installed in safety-related applications.
October 31, PER 924650 CEN006Q 1.6 Amp Failed current carrying Material not acceptable for Closed 2014 Fuses capacity plant use in safety-related applications and scrapped.
No material installed in safety-related applications.
October 31, PER 924138 BLA422J 12 Amp Failed current carrying History search identified no Closed 2014 Fuses capacity material installed in safety-related components.
Re-test of inventory material prior to acceptance and release from Hold status as a conservative measure.
October 31, PER 925152 CFN093V 7 Amp Failed current carrying Material not acceptable for Closed 2014 Fuses capacity plant use in safety-related applications and scrapped.
No material installed in safety-related applications.
October 31, PER 918351 BLD150M 10 amp Failed current carrying Passing material lots Closed 2014 fuses capacity accepted. Failed lots scrapped. Fuses installed in safety-related applications evaluated as acceptable.
October 31, PER 924148 CPA432M 3600 F Incorrect dimensional Items re-inspected to Closed 2014 Capacitors criteria revised criteria. One of 10 Items failed and Scrapped.
All remaining items acceptable. Installed safety-related applications acceptable.
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ENCLOSURE Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - April 2015 Status Report PREVIOUSLY IDENTIFIED TESTING FAILURES Initial Status SR/PER CATID Item Failure Disposition Status Report Date Number Description Description (Open/
Closed)
October 31, PER 926791 BPQ794H 8 Amp Failed current carrying Material not acceptable for Closed 2014 Fuses capacity plant use and recommended to be scrapped.
No material installed in safety-related applications.
October 31, PER 926998 CAA223F 6.25 Amp Failed current carrying Material not acceptable for Closed 2014 Fuses capacity plant use and scrapped.
No material installed in safety-related applications.
Procurement documents in Cancelled status.
October 31, PER 937329 BLD276K 8 Amp Failed current carrying Material not acceptable for Closed 2014 Fuses capacity plant use in safety related applications and scrapped.
No material installed in safety-related applications.
Procurement documents acceptable.
October 31, PER 940584 BAV418F 2.5 Amp Failed current carrying Material not acceptable for Closed 2014 Fuses capacity plant use in safety related applications and recommended to be scrapped.
Issued material not installed in safety-related applications.
October 31, PER 937330 CAA069M 4 Amp Failed current carrying Material from failed lot sent Closed 2014 Fuses capacity for additional testing.
Material in passed lot found acceptable.
No material installed in safety-related applications.
October 31, PER 922302 CBD738P 0.10 F Failed capacitance Material identified as failed. Closed 2014 Capacitors criteria No material installed in safety-related systems.
Enhancement PER 977758 written to test remaining material before releasing item from Hold status to determine if failure is within normal sampling failure rate. Additional enhancement PER 991884 written to enhance testing method.
October 31, PER 922301 AFM357G 10 amp fuse Failed Current Material identified as failed. Closed 2014 Carrying Capacity No material installed in safety-related systems and system would be adequately protected, if installed. No enhancements to the test method identified.
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ENCLOSURE Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - April 2015 Status Report PREVIOUSLY IDENTIFIED TESTING FAILURES Initial Status SR/PER CATID Item Failure Disposition Status Report Date Number Description Description (Open/
Closed)
October 31, PER 937305 ACM855J 2 Amp Failed Current Material identified as failed, 2014 Fuses Clearing Time as a result of initial and Closed supplemental testing. No material installed in safety-related applications.
Remaining material scrapped to prevent issue to the plant.
October 31, PER 940682 BYE634G 25 Amp Failed Current Material identified as failed.
2014 Fuses Clearing Time No material installed in Closed safety-related applications.
Remaining material scrapped to prevent issue to the plant.
October 31, PER 940658 BVN393M 15 Amp Failed Current Material identified as failed.
2014 Fuses Clearing Time Material installed in safety- Closed related applications evaluated and operability is maintained. Material from the failed lot scrapped to prevent issue to the plant.
Remaining lots designated for additional testing before acceptance.
January 31, PER 953283 AEM751J 40 Amp Failed Current Material installed in safety- Closed 2015 Fuses Clearing Time related applications evaluated and components remain operable. Item was not reportable and all material was scrapped to prevent issue to the plant.
January 31, PER 953270 BBN835J 2 Amp Failed Current Material installed in safety- Closed 2015 Fuses Clearing Time related applications and evaluation concluded that operability is maintained and fuses are both functional and not degraded/non-conforming.
Material from the failed lot has been scrapped and remaining tested lots were found acceptable and removed from Hold status.
January 31, PER 959240 BKY962G 45 Amp Failed Current Material identified as failed. Closed 2015 Fuses Clearing Time No material installed in safety-related applications.
Material from the failed lot designated to be scrapped.
Material from passed lots found acceptable and released from Hold status.
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ENCLOSURE Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - April 2015 Status Report PREVIOUSLY IDENTIFIED TESTING FAILURES Initial Status SR/PER CATID Item Failure Disposition Status Report Date Number Description Description (Open/
Closed)
January 31, PER 963444 BFJ723R 60 Amp Failed Current Material identified as failed. Closed 2015 Fuses Clearing Time No material installed in safety-related applications.
Test criteria was determined to be adequate.
All previous material was destructively tested; therefore, no additional disposition required.
January 31, PER 963436 BVA249T 4 Amp Failed Current Material identified as failed. Closed 2015 Fuses Carrying Capacity No material installed in safety-related applications.
All remaining fuses were designated to be tested for current carrying capacity, with any failed items to be scrapped. Material Hold status will be removed from fuses passing the test.
January 31, PER 956205 BBJ158P 15 Amp Failed Current Material identified as failed. Closed 2015 Fuses Clearing Time No material installed in safety-related applications.
Item failure was identified as not reportable.
January 31, PER 968055 CAE073A 1600 Amp Failed Current Test equipment limitations Closed 2015 CHG399Y 1200 Amp Clearing Time and and restraints generated CGT041L 2000 Amp Voltage Rating predictable test failures due CGT119J 2500 Amp to either low energy High Current clearing, resulting in failure Fuses of voltage rating, or failure to clear due to overheating equipment at higher currents. An alternate testing methodology was established and material sent to a qualified vendor for testing. All material was dispositioned as acceptable.
January 31, PER 965252 CQH798A 1 Amp Failed Voltage Rating Test equipment limitations Closed 2015 CJN746Y 450 Amp and restraints generated High Voltage predictable test failures due Fuses to low energy clearing, resulting in failure of voltage rating. An alternate testing methodology was established and material sent to a qualified vendor for testing. All material was dispositioned as acceptable.
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ENCLOSURE Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - April 2015 Status Report PREVIOUSLY IDENTIFIED TESTING FAILURES Initial Status SR/PER CATID Item Failure Disposition Status Report Date Number Description Description (Open/
Closed)
January 31, PER 963720 AXM024C Fitting Nut Failed Dimensions Material installed in safety- Closed 2015 Configuration related applications evaluated and operability is maintained. Material configuration received evaluated as acceptable and procurement documents revised to accept both potential configurations and dimensions.
January 31, PER 965852 CQM152 700 Amp Failed Current Material identified as failed. Closed 2015 W High Current Clearing Time No material installed in Fuses safety-related applications.
Test criterion was determined to be adequate.
Any remaining material was designated to be scrapped.
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