ML20212J832
| ML20212J832 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 01/20/1987 |
| From: | Murphy M TENNESSEE VALLEY AUTHORITY |
| To: | |
| Shared Package | |
| ML20212J703 | List: |
| References | |
| 301.15-SQN, 301.15-SQN-R01, 301.15-SQN-R1, NUDOCS 8701280320 | |
| Download: ML20212J832 (6) | |
Text
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TVA EMPLOYEE CONCEkNS REPORT NUMBER:
301.15-SQN SPECIAL PROGRAM REPORT TYPE: Sequoyah Nuclear Plant - Element REVISION NUMBER:
1 TITLE: Hardware Not Properly Identified REASON FOR REVISION:
To incorporate SQN Corrective Action Plan Revision 1 PREPARATION PREPARED BY:
G. Darrell Gardner
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- SRP Secretary's signature denotes SRP concurrences are in files.
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r TENNESSEE VALLEY AUTHORITY SEQUOYAH NUCLEAR PLANT EMPLOYEE CONCERNS TASK GROUP OPERATIONS CEG Subcategory: Mechanical Equipment Reliability and Design Element:
Hardware Not Properly Identified Report Number: 301.15-SQN Revision 1 XX-85-102-005 Evaluator:
G. Darrell Gardner
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R3visien 1 I.
HARDWARE NOT PROPERLY IDENTIFIED This report evaluates the issue that hardware is not properly identified in the field. The issue was identified for Browns Ferry Nuclear Plant (BFN) and was evaluated generically for Sequoysh Nuclear Plant (SQN).
II.
SPECIFIC EVALUATION METHODOLOGY The following issue was identified by Quality Technology Company (QTC) for BFN and was determined generic to SQN:
II-85-102-005 Brown's Ferry: Hardware is not properly identified in the field. A person needs a drawing to identify it.
Nuclear Power Dept concern.
CI has additional information.
The scope of this issue for SQN is perceived as relating to incorrect or missing equipment identification tags. The Nuclear Regulatory Commission (NRC) expurgated file for this issue was reviewed and no additional information was obtained. The SQN Special Maintenance Instruction (SMI) for system walkdowns was reviewed to determine actions underway at SQN to identify problems with equipment tags. An interim report prepared by the Office of Nuclear Power Configuration Management Survey Team was also reviewed to provide supplemental information related tc component identification.
Results of the evaluations at Watts Bar Nuclear Plant (WBN) and BFN were elso reviewed.
Interviews with the walkdown manager at SQN and with the Corporate Configuration Manager were conducted for supplemental information.
III.
FINDINGS SQN SMI 0-317-30 (Reference 1) requires equipment tags to be checked against the flow and control drawings during system walkdowns. The walkdown manager at SQN confirmed that this was being done. According to the manager, several hundred missing tags have been identified.
Not many cases have been identified where tags were incorrect. These cases are being documented and corrective actions initiated in accordance with the SMI. The manager stated that not all systems are being reviewed; only those systems or portions of systems identified by the Division of Nuclear Engineering (DNE) in walkdown packages are being verified against the design drawings.
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Rzvision 1 The Configuration Management Survey and Analysis Report (Reference 2),
Section II.C states that proper identification of items and documents will enable TVA management to ensure that:
Items are designed, manufactured.. installed / erected, tested, operated, and maintained in accordance with the design criteria and licensing comunitments.
The report notes in section III.C.1 that procedures exist for all sites, except BFN, which provide general instruction for assigning identification numbers to components, however, there is no consistent review process to ensure that unique ids are assigned in accordance with prescribed standards. As a result, multiple data bases (with different owners) exist (instruments tabs, EQIS, Q-lists drawings, etc.) which contain data discrepancies.
According to the Corporate Configuration Manager Division of Nuclear Services, and a consultant in that office, the interim report has been included as an appendix to the new Corporate Configuration Plan which is in review at this time. This new plan provides various task activities for plant sites and other central organizations to provide for new numbering schemes and new rules for maintaining data besos.
Conclusions The issue that hardware is not properly identified was validated for SQN. The walkdown effort at'SQN has identified numerous missing equipment tags and some cases of incorrect tags have been identified and are being corrected.
l The scope of the walkdown effort does not include verifying that data i
bases and drawings reflect the correct component identifiers. Although not specifically evaluated, traceability for testing and maintenance activities and proper operation of plant equipment may be compromised and are not precluded by the current situation. For these reasons.
l this issue is considered safety-related and may represent a significent condition adverse to quality. The new corporate configuration plan will address the issues related to drawing / data base discrepancies.
i IV.
ROOT CAUSE No root cause could be determined for missing equipment tags at SQN.
The fact that multiple or incorrect ids exist is perceived to result from the lack of a central point for control and review of ID assignments.
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R: vision 1 V.
GENERIC APPLICABII.ITY Evaluations have been conducted at SQN, WBN, and BFN with similar findings. The issue is considered generic to Bellefonte based on these findings, however, since BLN is presently in a limited construction phase, the new corporate configuration plan should be adequate to address and resolve these issues.
For this reason, an evaluation at BLN will not be conducted by the Employee Concerns Task Group (ECTG).
VI.
REFERENCES
- 1. SQN SMI 0-317-30 Revision 2. " System Walkdown," August 11, 1986
- 2. TVA Office of Nuclear Power Interim Report, " Configuration Management Survey and Analysis Report," March 1986 VII.
IMMEDIATE OR LONG-TERM CORRECTIVE ACTIONS Corrective Action Tracking Document (CATD) OP 30115-SQN-01 was written to SQN to address the issues of missing and incorrect tags discussed in this report. The SQN Corrective Action Plan in response states as 1R1 follows:
.l A.
Complete prior to restart, tagging deficiencies identified and I
classified as " Restart" by TVA's Design Baseline and Verification l
Program. Corrections prior to restart will be limited to com-l ponents identified by the main control flow and control drawings, IR1 and corrected under the Design Baseline and Verification (DB&VP) l program.
l B.
Initiate a long-term corrective action plan to reflect the unique IR1 identification of mechanical, electrical, and I&C components on l
the necessary drawings to allow the components to be reflected in l
procedures and identified in the field.
l CATD OP 30115-NPS-01 was written to the corporate configuration manager's office to address the resolution of data base and drawing discrepancies.
Because the later issue is generic, the corrective action response from the corporate configuration manager will be included in subcategory report 301 rather than in this repcrt.
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REFERENCE
- ECPSI20J-ECPS121C TENNESSEE VALLEY AUTHORITY PAGE FREQUENCY
- REQUEST OFFICE OF NUCLEAR PDHER RUN TIME -
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ONP - ISSS - RHM EMPLOYEE CONCERN PROGRAM SYSTEM (ECPS)
RUN DATE LIST OF EMPLOYEE CONCERN INFORMATION CATEGORYs OP PLANT OPER. SUPPORT SUBCATEGORY: 30115 IMPROPER HARDWARE IDENTIFICATION KEYHORD A
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S GENERIC N
APPL QTC/NSRS F
KEYNORD 5 CONCERN SUB R PLT BBSH INVESTIGATION S
CONCERN KEYHORD C NUMBER CAT CAT D LOC FLQB REPORT R
DESCRIPTION KEYHORD I XX 102-005 OP 30115 N BFN YYYY I-85-733-BFN NS BROHN'S FERRY: HARDWARE IS NOT PROPE TAGGING T50172 REPORT RLY IDENTIFIED IN THE FIELD. A PERS NONCONFORMANC ON NEEDS A DRANING TO IDENTIFY IT.
OPERATIONS NUCLEAR P0HER DEPT CONCERN. CI HAS GENERAL
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ADDITIONAL INFORMATION. NO FOLLON U P REQUIRED.
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1 CONCERNS FOR CATEGORY OP SUBCATEGORY 30115 O
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