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At 18:00 on October 19, 2007, while replac … At 18:00 on October 19, 2007, while replacing connector assemblies in response to a 10 CFR Part 21 Nuclear Industry Advisory (NIA) issued by PRIME Measurements and Nuclear Regulatory Commission (NRC) Information Notice (IN) 2006-14, Harris Nuclear Plant (HNP) personnel identified bare conductors on the field side pigtail at the epoxy interface of the connector assembly of Barton transmitter LT-487 (Steam Generator 'B' wide range level indication). The connector assembly associated with LT-487 is required to provide a moisture tight seal between the electrical enclosure and the postulated harsh post-accident environmental conditions. Moisture present at the pigtail conductors could short or result in spurious operation of the transmitter. The wire insulation at this interface should have been embedded into the epoxy, preventing the exposure of any bare conductor. The root cause of this issue is a defect in the manufacturing process of the transmitter connector assembly.</br></br>Actions taken at the HNP to date to mitigate the impact of the faulty manufacturing process included replacing fourteen of the eighteen affected connectors. The four remaining connectors will be replaced at the next opportunity. The affected connectors were installed at the time of plant construction, and the defect was identified on only one of the fourteen connectors replaced. There was no other inoperable equipment that contributed to this event, and the connectors were never subjected to the postulated harsh, post-accident environment.</br></br>D NRC FORM 366 (9-2007) PRINTED ON RECYCLED PAPERM 366 (9-2007) PRINTED ON RECYCLED PAPER +
At 18:00 on October 19, 2007, while replac … At 18:00 on October 19, 2007, while replacing connector assemblies in response to a 10 CFR Part 21 Nuclear Industry Advisory (NIA) issued by PRIME Measurements and Nuclear Regulatory Commission (NRC) Information Notice (IN) 2006-14, Harris Nuclear Plant (HNP) personnel identified bare conductors on the field side pigtail at the epoxy interface of the connector assembly of Barton transmitter LT-487 (Steam Generator 'B' wide range level indication). The connector assembly associated with LT-487 is required to provide a moisture tight seal between the electrical enclosure and the postulated harsh post-accident environmental conditions. Moisture present at the pigtail conductors could short or result in spurious operation of the transmitter. The wire insulation at this interface should have been embedded into the epoxy, preventing the exposure of any bare conductor. The root cause of this issue is a defect in the manufacturing process of the transmitter connector assembly.</br></br>Actions taken at the HNP to date to mitigate the impact of the faulty manufacturing process included replacing fourteen of the eighteen affected connectors. The four remaining connectors will be replaced at the next opportunity. The affected connectors were installed at the time of plant construction, and the defect was identified on only one of the fourteen connectors replaced. There was no other inoperable equipment that contributed to this event, and the connectors were never subjected to the postulated harsh, post-accident environment.</br></br>D NRC FORM 366 (9-2007) PRINTED ON RECYCLED PAPERM 366 (9-2007) PRINTED ON RECYCLED PAPER +
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DEC 1 7 2007 <br/> Serial: HNP-07-17 … DEC 1 7 2007 <br/> Serial: HNP-07-174 <br/>10 CFR 50.73 <br/>U.S. Nuclear Regulatory Commission <br/>ATTN: NRC Document Control Desk <br/>Washington, DC 20555 <br/>SHEARON HARRIS NUCLEAR POWER PLANT UNIT 1 </br><br/>DOCKET NO. 50-400/LICENSE NO. NPF-63 </br><br/>LICENSEE EVENT REPORT 2007-004-00 </br><br/>Ladies and Gentlemen: <br/>The enclosed Licensee Event Report 2007-004-00 is submitted in accordance with <br/>10 CFR 50.73. This report describes bare conductors on 'B' Steam Generator wide <br/>range level Barton transmitter as identified via the 10 CFR Part 21 process. Please <br/>refer any questions regarding this submittal to Mr. Dave Corlett, Supervisor <br/>Licensing/Regulatory Programs, at (919) 362-3137. <br/>Sincerely, <br/>/ /(e Iv:.. HCM.r Kelvin Henderson </br>Plant General Manager </br>Harris Nuclear Plant <br/>KH/khv <br/>Enclosure <br/>cc:MMr. P. B. O'Bryan, NRC Sr. Resident Inspector <br/>Ms. M. G. Vaaler, NRC Project Manager <br/>Mr. V. M. McCree, NRC Regional Administrator <br/>Progress Energy Carolinas, Inc. <br/>Harris Nuclear Plant <br/>P. 0. Box 165 </br><br/>New Hill, NC 27562 </br><br/>APPROVED BY OMB: NO. 3150-0104D EXPIRES: 08/31/2010, <br/>(9-2007) <br/>NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION' <br/>Estimated burden per response to comply with this mandatory collection <br/>request: 80 hours. Reported lessons learned are incorporated into the licensing <br/>process and fed back to industry. Send comments regarding burden estimate to <br/>the Records and FOIA/Privacy Service Branch (T-5 F52), U.S. Nuclear <br/>LICENSEE EVENT REPORT (LER) Regulatory Commission, Washington, DC 20555-0001, or by internet e-mail to infocollects@nrc.gov, and to the Desk Officer, Office of Information and <br/>RegulatoryAffairs, NEOB-10202, (3150-0104), Office of Management and Budget, <br/>Washington, DC 20503. If a means used to impose an information collection'(See reverse for required number of does not display a currently valid OMB control number, the NRC may not conduct <br/>or sponsor, and a person is not required to respond to, the informationdigits/characters for each block) collection. <br/>1. FACILITY NAME 2. DOCKET NUMBER 3. PAGE <br/>Harris Nuclear Plant - Unit 1 05000400 1DOF 3 <br/>4. TITLE <br/>Bare Conductors on `B' Steam Generator Wide Range Level Barton Transmitter as Identified via 10 CFR Part 21 Processch block) collection. <br/>1. FACILITY NAME 2. DOCKET NUMBER 3. PAGE <br/>Harris Nuclear Plant - Unit 1 05000400 1DOF 3 <br/>4. TITLE <br/>Bare Conductors on `B' Steam Generator Wide Range Level Barton Transmitter as Identified via 10 CFR Part 21 Process
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