CNL-14-195, the Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - October 2014 Status Report
| ML14304A724 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry, Watts Bar, Sequoyah  |
| Issue date: | 10/31/2014 |
| From: | James Shea Tennessee Valley Authority |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| CNL-14-195 | |
| Download: ML14304A724 (19) | |
Text
Tennessee Valley Authority, 1101 Market Street, Chattanooga , Tennessee 37402 CNL-14-195 October 31 , 2014 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 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 - October 2014 Status Report
Reference:
- 1. TVA letter to NRC, "Additional Information Regarding March 28, 2013, Public Meeting With NRC Regarding The Tennessee Valley Authority's (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)
- 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 )
Nuclear Regulatory Commission CNL-14-195 Page 2 October 31 , 2014
- 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)
The purpose of this letter is to provide the Nuclear Regulatory Commission (NRC) staff with the October 2014 Commercial Grade Dedication (CGD) Recovery Project Status Report. Previous status reports were provided in References 2 through 6.
In Enclosure 2 of the Reference 1 letter, TVA provided the NRC with a TVA Nuclear Power (NPG) Group CGD Recovery Project Action Plan Summary that included CGD Recovery Project milestones. In milestone 4, TVA stated that quarterly updates would be provided to the NRC starting in July 2013 and that the updates would include any failures found in either the installed equipment review or warehouse inventory review along with an evaluation of safety significance of such failures for the installed items.
Based on progress made to date, the TVA Nuclear Power Group CGD Recovery Project is on track to meet the December 2014 commitment date for project completion . In addition , no issues have been identified that resulted in declaring plant equipment to be inoperable.
The enclosure to this letter provides the TVA Nuclear Power Group CGD Recovery Project -
October 2014 Status Report.
There are no new regulatory commitments contained in this letter. Should you have any questions, please contact John Laffrey at (423) 751-3262.
Enclosure:
Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - October 2014 Status Report
Nuclear Regulatory Commission CNL-14-195 Page 3 October 31 , 2014 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 (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - October 2014 Status Report INTRODUCTION:
During a public meeting with the Nuclear Regulatory Commission (NRC) staff on March 28, 2013, TVA described a broad set of actions being taken by the TVA Nuclear Power Group (NPG) 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 by December 31 , 2014.
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 the Code of Federal Regulations was amended in 1995.
From April 2013 to April 2014, the CGD Recovery Project Team identified 22 ,340 unique Catalog Identifiers (CATIDs) that have been generated for CGD items across the TVA Nuclear Power Group Fleet since September 1995. Of this population , 17,343 unique CATIDs have been identified to be either not purchased or not installed . Therefore, the remaining 4,997 unique CATIDs have been either purchased or installed in a TVA nuclear plant and will require evaluation , as described in the CGD Recovery Project Plan.
The CGD Recovery Project is evaluating the unique CATIDs in groups where possible. In many cases, several CGD packages have been generated for the same unique CATID due to the number of years of plant operations under evaluation.
The status provided below documents the progress to date based on accounting for the applicable number of unique CATIDs.
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 - October 2014 Status Report PROGRESS TO DATE :
As of April 4, 2014, the TVA CGD Recovery Project Weekly Report indicated that from a population of 17,343 CATIDs that were either not purchased or not installed , 17,343 CATIDs have been verified via an additional data search to not exist in inventory or in the operating units. This completes the verification and documentation of CATIDs that were either not purchased or not installed.
As of October 12, 2014, from a population of 4,997 CATIDs that were purchased and are either in inventory or installed , 4639 CATIDs have been assessed against project plan review criteria, including the critical characteristics for acceptance (CCA), and were found to be acceptable. Of the remaining 358 CATIDs, there are 89 that require testing or analyses and 269 that have been assessed against project plan review criteria, including the CCA, and were found to be acceptable with the exception of seismic CCA information .
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 is ongoing. Additional actions and resources are being applied to address the additional scope of seismic CCA information .
Based on progress made to date, the TVA Nuclear Power Group Commercial Grade Dedication Recovery Project is on track to meet the December 2014 commitment date for project completion.
UPDATE ON PREVIOUSLY IDENTIFIED ISSUES :
The status of previously identified testing failures is summarized in the Table below. A testing failure is initially documented in a Service Request (SR), then further documented and evaluated in a Problem Evaluation Report (PER), under the corrective action program.
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 testinq .
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.
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ENCLOSURE Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - October 2014 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 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 (SR) 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.
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.
weiqht.
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 Materi al 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 .
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ENCLOSURE Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - October 2014 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 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.
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 (SR) 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 manufacturer's 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 manufacturer's specifications. Material retested and verified to meet criteria . Material acceptable to revised package.
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ENCLOSURE Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - October 2014 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 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 CCA611 R Pulley Failed testing criteria Incorrect material specified Closed 2014 Bushings for material type . based on current manufacturing . Material acceptable to originally supplied material type .
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.
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ENCLOSURE Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - October 2014 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 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 BLA3520 30Amp 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.
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 BWA522 1.8 Failed leakage current Expanded sample testing Closed w 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 AP0135T 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 35Amp 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 .
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ENCLOSURE Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - October 2014 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 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 Evaluate test results to Open Valves rate . determine potential operability impact on four components with higher exhaust rate requirements than the test results. PER 887333 to address additional 10 CFR 21 considerations.
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.
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ENCLOSURE Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - October 2014 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 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.
April 30, 2014 PER 867205 BVA247Y 7.5 Amp Failed current clearing Expanded sample testing, Closed Fuse time. per EPRI TR-017218-R 1, 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 15Amp 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 - October 2014 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 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.
July 31 , 2014 PER 882153 CFJ418P 10Amp 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 Fuse length measuring too Open PER 899964 criteria long requires final review and disposition . Issue history verification required for operability assessment.
July 31, 2014 PER 882141 ADM954A 35Amp Failed current clearing Expanded sample resulted Open PER 899965 (SQN Fuse time . in additional material Site) failure . Evaluation of failure , test criteria and issue history required.
PER 932364 to address additional 10 CFR 21 considerations .
July 31 , 2014 PER 880803 CDC572Q 50Amp Failed voltage rating. Expanded sample testing Closed Fuse 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 - October 2014 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 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 scraooed.
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 desiqnated as obsolete.
July 31 , 2014 PER 900197 BYL598T 30Amp 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.
July 31 , 2014 PER 895583 AEY065C 1.25 Amp Failed current clearing Evaluation of issue history Open Fuse time . completed . Final evaluation of failure and test criteria required.
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 20Amp 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.
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ENCLOSURE Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - October 2014 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 885242 CJD815L 60Amp 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 Material not acceptable for Open Fuse time . plant use. History search identified no material installed in safety related components. Final action to review test requirements and procurement documents.
July 31 , 2014 PER 885244 BKY7930 60Amp 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 50Amp 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 30Amp Failed current carrying Material not acceptable for Open PER 912990 Fuse capacity. plant use. History search identified no material installed in safety related components . Final action to review test requirements and procurement documents.
July 31, 2014 PER 899963 BYL598T 30Amp Failed current carrying Material identified as failed Open (SON Fuse capacity and for two criteria. Remaining Site) dimensional criteria . actions includes 10CFR21 review, history search and review of test report/procurement documents . PER 932364 to address additional 10 CFR 21 considerations.
July 31 , 2014 PER 886874 CEP098J 30Amp Failed current carrying Expanded sample testing Closed Fuse capacity. 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 - October 2014 Status Report RECENTLY IDENTIFIED ISSUES:
The following testing failures were recently identified and entered into the corrective action program:
Problem Evaluation Report 920903 was initiated to identify and address failure of critical characteristic testing criteria for current clearing time of 35 amp fuses (CATID ADM954A) . The current clearing time acceptance criterion specifies that with a test circuit consisting of 175 amps (+10/-0%), fuse shall blow in no less than 10 seconds. Of three fuses tested against current clearing time acceptance criteria , three fuses destructively tested failed to meet the testing acceptance criteria by opening early with failure values of 2.72 , 9.08, and 9.62 seconds.
A review of previously issued inventory was performed , identifying no fuses issued from the tested lot; therefore, no fuses were installed for safety related applications. This condition will be further evaluated , as described in the CGD Recovery Project Plan .
Problem Evaluation Report 922302 was initiated to identify and address failure of critical characteristic testing criteria for capacitance of 0.10 µF capacitors (CATID CBD738P) . The capacitance acceptance criteria of (0.10 µF +/- 20%) (0.08 to 0.12 µF) was specified and developed using standard capacitor dedication criteria . Of nine capacitors tested against acceptance criteria, one capacitor non-destructively tested failed to meet the testing acceptance criteria with a value measured at 0.077 µF . A review of previously issued inventory was performed , identifying no capacitors installed from the tested lot; therefore, no capacitors were installed for safety related applications. This condition will be further evaluated , as described in the CGD Recovery Project Plan .
Problem Evaluation Report 922301 was initiated to identify and address failure of critical characteristic testing criteria for current carrying capacity of 10 amp fuses (CATID AFM357G) .
The current carrying capacity test applies 10 amps (+10/-0%) until the fuse is thermally stable.
Temperature stabilization has occurred when no individual temperature rise reading of four consecutives readings taken at 5 minute intervals exceeds the average reading of these four readings by more than 2 degrees Celsius. An acceptable test shows the fuse is intact and no signs of breakdown or deterioration. Of 26 fuses initially tested for current carrying capacity, one fuse failed to meet the acceptance criteria by opening during testing . A review of previously issued inventory was performed , identifying no fuses installed in any plant equipment; therefore ,
no fuses were installed for safety related applications. This condition will be further evaluated ,
as described in the CGD Recovery Project Plan .
Problem Evaluation Report 920910 was initiated to identify and address failure of critical characteristic testing criteria for current clearing time of 2.25 amp fuses (CATID CME546X) .
The current clearing time acceptance criterion specifies that with a test circuit consisting of 11 .25 amps (+10/-0%), fuse shall blow in no less than 8 seconds. Of two fuses tested against current clearing time acceptance criteria , two fuses destructively tested failed to meet the testing acceptance criteria by failing to open and charring , resulting in aborting the test. The test was aborted without the fuses clearing at 86.78 and 91.67 seconds. A review of previously issued inventory was performed , identifying two fuses issued for non-quality related applications; therefore, no fuses were issued for safety related applications. This condition will be further evaluated , as described in the CGD Recovery Project Plan .
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ENCLOSURE Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - October 2014 Status Report Problem Evaluation Report 924650 was initiated to identify and address failure of critical characteristic testing criteria for current clearing time of 1.6 amp fuses (CATID CEN006Q). The current clearing time acceptance criterion specifies that with a test circuit consisting of 3.2 amps
(+10/-0%), fuse shall blow in no greater than 240 seconds. Of nine fuses tested against current clearing time acceptance criteria , two fuses destructively tested failed to meet the testing acceptance criteria by failing to open before 20 minutes had elapsed, resulting in aborting the test. A review of previously issued inventory was performed, identifying eight fuses issued for non-quality related applications; therefore, no fuses were issued for safety related applications.
This condition will be further evaluated , as described in the CGD Recovery Project Plan.
Problem Evaluation Report 924138 was initiated to identify and address failure of critical characteristic testing criteria for current clearing time of 12 amp fuses (CATID BLA422J). The current clearing time acceptance criterion specifies that with a test circuit consisting of 60 amps
(+10/-0%) , fuse shall blow in no less than 10 seconds. Of three fuses tested against current clearing time acceptance criteria , one fuse destructively tested failed to meet the testing acceptance criteria opening early with a failure value of 0.82 seconds. A review of previously issued inventory was performed , identifying that material issued for a safety related work order were not installed; therefore, no immediate operability concerns . This condition will be further evaluated , as described in the CGD Recovery Project Plan .
Problem Evaluation Report 925152 was initiated to identify and address failure of critical characteristic testing criteria for current clearing time of 7 amp fuses (CATID CFN093V) . The current clearing time acceptance criterion specifies that with a test circuit consisting of 14 amps
(+10/-0%), fuse shall blow in no greater than 240 seconds. Of one fuse tested against current clearing time acceptance criteria , one fuse destructively tested failed to meet the testing acceptance criteria by failing to open before 12 minutes had elapsed , resulting in aborting the test. Test current was increased to 35 amps to verify the fuse would clear. The fuse cleared in 29.87 seconds after raising the test current to 35 amps. A review of previously issued inventory was performed , identifying 12 fuses issued for quality related and non-quality related applications; therefore, no fuses were issued for safety related applications. This condition will be further evaluated, as described in the CGD Recovery Project Plan.
Problem Evaluation Report 918351 was initiated to identify and address failure of critical characteristic testing criteria for current clearing time of 10 amp fuses (CATID BLD150M) . The current clearing time acceptance criterion specifies that with a test circuit consisting of 20 amps
(+10/-0%) , fuse shall blow in no greater than 240 seconds. Prior to testing , three fuses in the first lot were found to be open and could not be tested . Of 12 fuses tested at 20 amps against current clearing time acceptance criteria , one fuse destructively tested failed to meet the testing acceptance criteria by failing to open before 12 minutes had elapsed , resulting in aborting the test. Test current was later increased to 50 amps to verify the fuse would clear. The fuse cleared in 19.35 seconds after raising the test current to 50 amps. Based on the single fuse failure, an expanded sample was performed and an additional eight fuses were tested at either 20 amps (200% rated current) or 50 amps (500% rated current). Four fuses were destructively tested at each current value, with all passing the acceptance criteria . Material lots with failed or open fuses were conservatively identified to be scrapped . The two lots tested for expanded E 13 of 16 CNL-14-195
ENCLOSURE Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - October 2014 Status Report sample were accepted based on the completed testing results. This condition will be further evaluated , as described in the CGD Recovery Project Plan .
Problem Evaluation Report 924148 was initiated to identify and address failure of critical characteristic testing criteria for dimensional length of 3600 µF capacitors (CATID CPA432M) .
During initial inspection , all four capacitors failed the length acceptance criteria of 4.063" to 4 .187". As a result, all 10 capacitors from the lot were inspected , which failed the acceptance criteria . Investigation identified that the acceptance criteria was incorrectly specified in the package. When applying the correct acceptance criteria , only one capacitor failed the criteria with a length measurement of 4.226" in comparison to the applicable acceptance criteria of 4.095" to 4.219" . A review of previously issued inventory was performed , identifying several capacitors installed from the tested lot in safety related applications. A review of work orders did not identify any installation or fit deviations; therefore, there were no operability concerns .
This condition will be further evaluated , as described in the CGD Recovery Project Plan.
Problem Evaluation Report 926791 was initiated to identify and address failure of critical characteristic testing criteria for current clearing time of 8 amp fuses (CATID BPQ794H) . The current clearing time acceptance criterion specifies that with a test circuit consisting of 16 amps
(+10/-0%), fuse shall blow in no greater than 240 seconds. Of three fuses tested against current clearing time acceptance criteria , one fuse destructively tested failed to meet the testing acceptance criteria by clearing at 366.92 seconds. A review of previously issued inventory was performed , identifying that no fuses were issued from the tested lot; therefore, no fuses were issued for safety related applications. This cond ition will be further evaluated , as described in the CGD Recovery Project Plan.
Problem Evaluation Report 926998 was initiated to identify and address fa ilure of critical characteristic testing criteria for current clearing time of 6.25 amp fuses (CATID CAA223F) . The current clearing time acceptance criterion specifies that with a test circuit consisting of 12.5 amps (+10/-0%) , fuse shall blow in no greater than 240 seconds. Of five fuses tested against current clearing time acceptance criteria , two fuses destructively tested failed to meet the testing acceptance criteria . One fuse cleared at 376.93 seconds and the second fuse failed to clear for greater than 12 minutes, when the test was aborted . A review of previously issued inventory was performed , identifying that no fuses were issued from the tested lot; therefore , no fuses were issued for safety related applications. This condition will be further evaluated , as described in the CGD Recovery Project Plan.
Problem Evaluation Report 937329 was initiated to identify and address fa ilure of critical characteristic testing criteria for current clearing time of 8 amp fuses (CATID BLD276K) . Fuse from the lot failed both current clearing time tests. The 200% current clearing time acceptance criterion specifies that with a test circuit consisting of 16 amps (+ 10/-0% ), fuse shall blow in no greater than 240 seconds. Of four fuses tested against 200% current clearing time acceptance criteria, two fuses destructively tested failed to meet the testing acceptance criteria by clearing at 670.07 and 619.30 seconds. The 500% time delay current clearing time acceptance criterion specifies that with a test circuit consisting of 40 amps (+1 0/-0%), fuse shall blow in no less than 1O seconds. Of four fuses tested against 500% current clearing time acceptance criteria , one fuse destructively tested failed to meet the testing acceptance criteria by failing to clear after 85.65 seconds and the test was terminated due to the cap solder melting and the fuse emitting E 14 of 16 CNL-14-195
ENCLOSURE Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - October 20 14 Status Report smoke. A review of previously issued inventory was performed , identifying that fuses were only issued to non-quality related applications from the tested lot; therefore , no fuses were issued for safety related applications. This condition will be further evaluated , as described in the CGD Recovery Project Plan.
Problem Evaluation Report 937305 was initiated to identify and address failu re of critical characteristic testing criteria for current clearing time of 2 amp fuses (CATID ACM855J). The current clearing time acceptance criterion specifies that with a test circuit consisting of 4 amps
(+10/-0%), fuse shall blow in no greater than 240 seconds. Of six fuses tested against current clearing time acceptance criteria , one fuse destructively tested fa iled to meet the testing acceptance criteria by failing to open before 12 minutes had elapsed , resulting in aborting the test. A review of previously issued inventory was performed , identifying 20 fuses issued for non-quality related applications ; therefore, no fuses were issued for safety related applications.
This condition will be further evaluated , as described in the CGD Recovery Project Plan .
Problem Evaluation Report 940584 was initiated to identify and address failure of critical characteristic testing criteria for current clearing time of 2.5 amp fuses (CATID BAV418F). The current clearing time acceptance criterion specifies that with a test circuit consisting of 5 amps
(+10/-0%), fuse shall blow in no greater than 240 seconds. Of four fuses tested against current clearing time acceptance criteria, one fuse destructively tested failed to meet the testing acceptance criteria by failing to open before 12 minutes had elapsed , resulting in aborting the test. A review of previously issued inventory was performed , identifying four fuses issued , but not installed for quality related applications ; therefore , no fuses were issued for safety related applications. This condition will be further evaluated , as described in the CGD Recovery Project Plan.
Problem Evaluation Report 937330 was initiated to identify and address failure of critical characteristic testing criteria for current clearing time of 4 amp fuses (CATID CAA069M). The current clearing time acceptance criterion specifies that with a test circuit consisting of 8 amps
(+10/-0%) , fuse shall blow in no greater than 240 seconds. Of five fuses tested against current clearing time acceptance criteria , one fuse destructively tested failed to meet the testing acceptance criteria , by clearing at 248.73 seconds. A review of previously issued inventory was performed, identifying that no fuses were issued from the tested lot; therefore, no fuses were issued for safety related applications. This condition will be further evaluated , as described in the CGD Recovery Project Plan .
Problem Evaluation Report 940682 was initiated to identify and address failure of critical characteristic testing criteria for current clearing time of 25 amp fuses (CATID BYE634G). The current clearing time acceptance criterion specifies that with a test circuit consisting of 50 amps
(+10/-0%) , fuse shall blow in no greater than 240 seconds. Of two fuses tested against current clearing time acceptance criteria , one fuse destructively tested failed to meet the testing acceptance criteria by failing to open before 12 minutes had elapsed , resulting in aborting the test. A review of previously issued inventory was performed, identifying no fuses issued from the tested material lots; therefore, no fuses were issued for safety related applications. This condition will be further evaluated , as described in the CGD Recovery Project Plan .
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ENCLOSURE Tennessee Valley Authority (TVA) Nuclear Power Group Commercial Grade Dedication Recovery Project - October 2014 Status Report Problem Evaluation Report 940658 was initiated to identify and address failure of critical characteristic testing criteria for current clearing time of 15 amp fuses (CATID BVN393M). The current clearing time acceptance criterion specifies that with a test circuit consisting of 30 amps
(+10/-0%) , fuse shall blow in no greater than 240 seconds. Of six fuses tested against current clearing time acceptance criteria , two fuses destructively tested failed to meet the testing acceptance criteria by clearing at 283.90 and 349.62 seconds. A review of previously issued inventory was performed, identifying one fuse issued for a safety related application from the failed material lot. Review of the installed location identified that operability is maintained . This condition will be further evaluated , as described in the CGD Recovery Project Plan .
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