ML20214T773
| ML20214T773 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 11/07/1986 |
| From: | Nesbitt P TENNESSEE VALLEY AUTHORITY |
| To: | |
| Shared Package | |
| ML20214T770 | List: |
| References | |
| 213.1-(B), 213.1-(B)-R01, 213.1-(B)-R1, NUDOCS 8612080689 | |
| Download: ML20214T773 (10) | |
Text
{{#Wiki_filter:_ _ _ - - - _ - - TVA EMPLOYEE CONCERNS REPORT NUMBER: 213.1(B) SPECIAL PROGRAM f' REPORT TYPE: SEQUOYAH ELEMENT REVISION NUMBER: 1 ( I TITLE: ELECTRICAL PROCEDURES l Inadequate Management, Control and Status Listing of AC & DC Electrical Loads, PAGE 1 0F 10 Including Diesel Generator Margins. REASON FOR REVISION: To restate problems on the corrective action tracking documents. PREPARATION PREPARED BY: m- W (sk- A<. 4* 3/* % (
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Rh'W H. i-g SRP: SIGNATURE DATE SIGNATURE DATE c7, APPROVED BY: ECSP MANAGER DATE MANAGER OF NUCLEAR POWER DATE CONCURRENCE (FINALREPORTONLY) 8612030689 861120 7 DR ADOCK 0500 _ - - . - - m
TVA EMPLOYEE CONCERNS REPORT NUMBER: 213.1 (B)
, SPECIAL PROGRAM REVISION NUMBER: 1 C '
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PAGE 2 0F 10
- 1. CHARACTERIZATION OF ISSUE (S):
Concerns Issues WI-85-100-010 XX-85-122-030, 031, 032 a. Ac and dc electrical loads and
" Inadequate management, control margins, including diesel generators, and status listing of ac & de are not kept current as changes electrical loads, including (additions or deletions of loads) diesel generator loads., This occur.
involves inadequate control of, or preparation of, calculations b. Electrical calculations for. loads for loads, .and inadequate manage- are inadequately prepared and ment and control of load margins, controlled.. including electrical loads and mechanical loads (heat, BHP, - c. There appears to be programmatic etc.) that translate into'elec- inadequacy with regard to trical loads." preparation and control of calculations. ( Addressed in Element Reports 203.1 and 205.2)
- 2. HAVE ISSUES BEEN IDENTIFIED IN ANOTHER SYSTEMATIC ANALYSIS? YES X NO Identified by NSRS, Gilbert / Commonwealth, Inc., Sargent and Lundy Date For dates see documentation identifiers ~below.
Documentation Identifiers:
- a. NSRS Report No. I-85-992-SQN, " Control of Ac and De Electrical Loads," (04/07/86)
- b. NSRS Report No.- 'I-85-132-SQN, " Diesel Generator Loads,"
(03/06/86)
- c. Gilbert / Commonwealth Report No. 2614, Final Report " Technical
, Review of SQN Modifications," (03/03/86)
- d. ; Sargent & Lundy Report, " Electrical Calculation Review Program," (04/08/86)
- 3. D0ctmENT NOS., TAG NOS., LOCATIONS, OR OTHER SPECIFIC DESCRIPTIVE IDENTIFICATIONS STATED IN ELEMENT. r Electrical calculations in general with specific reference to-load
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calculations. t 00260 (10/31/86) t
' f
TVA EMPLOYEE CONCERNS REPORT NUMBER: 213.1 (B) SPECIAL PROGRAM REVISION NUMBER: 1 l_.
\ PAGE 3 0F 10
- 4. INTERVIEW FILES REVIEWED:
Files XX-85-122 and WI-85-100 were reviewed and no additional unreviewed information was found.
- 5. DOCl#ENTS REVIEWED RELATED TO THE ELEMENT:
See Appendix A.
- 6. WHAT REGULATIONS, LICENSING C0094ITMENTS, DESIGN REQUIREMENTS, OR OTHER APPLY OR CONTROL IN THIS AREA?
See Appendix A.
- 7. LIST REQUESTS FOR INFORMATION, MEETINGS, TELEPHONE CALLS, AND OTHER DISCUSSIONS RELATED TO ELEMENT.
() N 8. See Appendix A. EVALUATION PROCESS:
- a. Reviewed the existing reports (e.g., I-85-992-SQN) for findings to assess the condition of SQN calculations, 'and lA previous management, control, and status listings of calculations.
b .- Reviewed the recommendations in existing reports for evaluators' concurrence.
- c. Reviewed established TVA procp:ura for performing and updating electrical calcu %tG :s ' determine if procedures are adequate,
- d. Reviewed available transcripts of NRC investigative A interviews.
- e. Est blished that electrical load lists exist and are being lA maintained / controlled in an appropriate manner, c;;s W
00260 (10/31/86) I
- - s. ~ _ _, .
TVA EMPLOYEE CONCERNS REPORT NUMBER: 213.1(B) SPECIAL PROGRAM REVISION NUMBER: 1 PAGE 4 0F 10
- 9. DISCUSSION, FINDINGS, AND CONCLUSIONS: jg, Discussion:
The issues raised by these concerns regarding inadequacy of
, preparation, management, and control of calculations for electrical loads have been identified and addressed in several TVA internal audits and investigations, as well as in external evaluations and review programs. These programs have substantiated the concern foc Sequoyah Nuclear Plant (SQN), and, in addition, it has been l/b, determined that the concern is generic to all TVA plants. The safety implication of the concern is the potential inability of safety-related equipnent to supply the electrical loads and, therefore, to perform its intended safety function.
General issue "c" regarding programmatic inadequacies with regard to preparation and control of calculations is analyzed in Element Reports 205.1 and 205.2, " Control of Design Calculations." Only issues "a" and "b" listed in Section 1 are evaluated in this element report.
" The first systematic analysis of these issues was included in NSRS Report I-85-132-SQN which referenced Office of Quality Assurance 4
(0QA) Audit Deviation Report 051-A-84-0006. The deviation report found that there is "no adequate system to ensure that calculations and studies perfonned by the APS section of the Electrical Engineering Branch (EEB) are updated and revised to support design changes." NSRS Report I-85-992-SQN further documented discrepancies in the design control area and concluded that this is generic to the Division of Nuclear Engineering (DNE). External reviews were performed by Gilbert / Commonwealth (G/C) and by Sargent & Lundy (S&L). The G/C reports highlighted a lack of formal documentation of design change evaluation (ECN review). The S&L report indicated that many electrical calculations were not fonnally prepared or retrievable, but concluded that in this respect, "Sequoyah is, in general, typical of industry practice in the time frame involved." In addition, the S&L final report identified a minimum set of calculations required to support the design bases and also identified which of these calculations should be completed or updated prior to restart. In response to the S&L report and recommendations, TVA committed to adopt the S&L list of minimum set of calculations and committed to complete the required calculations prior to restart (App. A, 5.m). l2h 0026D(10/31/86)
TVA EMPLOYEE CONCERNS REPORT NUMBER: 213.1(B) SPECIAL PROGRAM REVISION NUMBER: I f, PAGE 5 0F 10 This was further confirmed by teleconference (App. A, 7.a) and by a review of the Minimum Set of Calculations Status for SQN ( App. A, 5.p). lb To ensure proper preparation and control (i.e., review, approval, revision, tracking, etc.) all calculations will be performed in accordance with the new Nuclear Engineering Procedure (NEP) 3.1,
" Calculations." Similarly, NEP 6.1, " Change Control," establishes procedures for the review of change-authorizing documents (ECNs, FCRs) for impact on drawings, calculations, and other design documents to ensure all are updated to reflect the change. lA Requirements of the NEPs have been incorporated into the SQN program through revisions to existing, and preparation of new, Sequoyah Engineering Procedures (SQEPs). These procedures were reviewed by the evaluator and found to adequately cover the requirements for preparing, maintaining, and controlling electrical calculations. Additionally, TVA has engaged S&L to provide ld technical and managerial support for the electrical calculation program. This support will include S&L providing procedures, software, a QC/QA documentation program, and the training of TVA personnel in the performance and maintenance of calculations.
Findings
- a. Issue "a," regarding ac and de electrical loads and margins, has been substantiated as a valid concern. However, actions have beer, taken by TVA to correct the problem.
Specific to the diesel generators, calculation SQN-E3-002 has been issued to document the diesel generator loads (this is covered in more detail in Element Report 243.0). TVA has committed to and is in the process of updating the ac and de load lists for all electrical systems. The load lists for each system will be incorporated as part of the calculation for the respective system. Updating loads contained in required calculations will be completed prior to restart. Additionally, the evaluation tbam concurs with the list of required calculations identified by S&L and adopted by TVA.
- b. Issue "b," relating to inadequate preparation and control of electrical load calculations, was also verified to be a valid concern. However, review of TVA's commitments and corrective e
0026D (10/31/86)
TVA EMPLOYEE CONCERNS REPORT NUMBER: 213.1(B) SPECIAL PROGRAM REVISION NUMBER: 1 f
' PAGE 6 0F 10 actions, and the new procedures (NEPs and SQEPs), indicates that SQN has an adequate program for preparation and control of calculations, and for their revision.
Conclusion:
The concerned individual raises valid issues stemming from inadequacies in the previous design process control system. The problems associated with these issues have, however, been recognized by TVA and corrective actions initiated. Acceptable completion of the currently established corrective actions, completion of the minimum set of electrical calculations program, and adherence to the new procedures will correct the problems and will prevent recurrence in the future. 9
+
00260(10/31/86)
TVA EMPLOYEE CONCERNS REPORT NUMBER: 213.1 (B) SPECIAL PROGRAM REVISION NtMBER: 1 PAGE 7 0F 10 APPENDIX A
- 5. DOCUMENTS REVIEWED RELATED TO THE ELEMENT:
- a. Revised Sequoyah Nuclear Performance Plan Volume II, Rev.l.
- b. NSRS Final Report I-85-992-SQN, (04/07/86)
- c. NSRS Interim Report I-85-992-SQN, " Control of Ac and Oc d Electrical Loads," (03/17/86) ,
- d. NSRS Report No I-85-132-SQN, " Diesel Generator Loads,"
(03/06/86)
- e. Gilbert / Commonwealth Report No. 2614, Final Report " Technical Review of SQN SNP Modifications for TVA," (03/03/86)
- f. Design Baseline and Verification Program, Sequoyah Nuclear Plant, Revision 0, (05/01/86)
- g. Sargent and Lundy Final Report "Sequoyah Nuclear Plant, Nuclear Plant Electrical Calculation Program Assessment,"
(04/08/86)
- h. Sequoyah Engineering Procedures 11 - Rev. 4, " Procedure for Evaluating Engineering Change Notice and Field Change Notice Documents,"(08/18/86)
- 1. Sequoyah Engineering Procedures 12 - Rev. 2, " Procedure for Evaluating Engineering Change Notice and Field Change Notice Documents," (07/23/86)
- j. Sequoyah Engineering Procedures 13 - Rev. O, " Procedure for Transitional Design Change Control," (07/25/86)
- k. Sequoyah Engineering Procedures 15 - Rev. O, " Procedure for DNE Interface with Change Control Board (CCB)," (05/15/86)
- 1. Nuclear Engineering Procedures (NEPs):
3.1 R0 " Calculation," (07/01/86) 6.1 R0 " Change Control," (07/01/86)
- m. TVA memo from W. S. Raughley to Those Listed, (805 860508 902), " Policy Memorandum PM 86 02 (EEB) -
Electrical Calculations" 00260(10/31/86)
TVA EMPLOYEE CONCERNS REPORT NUMBER: 213.1(B) SPECIAL PROGRAM REVISION NUMBER: 1 PAGE 8 0F 10 APPENDIX A (cont'd) A
- n. TVA memo from J. A. Raulston to J. A. Kirkebo, (B45 860619 252), " Design Calculations," (06/19/86)
- o. TVA memo from W. C. Drotleff to Those Listed, (805 860410 008), " Transition from OEPs to NEPs," (04/14/86)
- p. Minimum Set of Electrical Calculation Status
- q. TVA letter from W. S. Raughley to Carmen Chiappetta of S&L,
" Electrical Calculation Program," (05/30/86) lA
- r. TVA memo from J. P. Fenton to J. Q. Webber, (843 860827 901),
"Sargent & Lundy Engineers Proposed Services for Electrical Calculations Program"
- s. Letter from B. J. Youngblood, NRC, to S. A. White, TVA, (06/25/86), with the attached transcript of the investigative interview conducted by the NRC on 02/21/86 at the First Tennessee Bank Building in Knoxville, TN
- t. All documents listed in section 6.
- 6. WHAT REGULATIONS, LICENSING C0petITMENTS, DESIGN REQUIREMENTS OR OTHER APPLY OR CONTROL IN THIS AREA 7
- a. 10CFR Part 50, Appendix 3 (June 26,1971)
Criterion III " Design Control" Criterion V. " Instructions, Procedures and Drawings"
- b. Regulatory Guide 1.64, " Quality Assurance Requirements for g the Design of Nuclear Power Plants"
- c. ANSI N45.2.ll-1974 " Quality Requirements for the Design of Nuclear Power Plants" .
- 7. LIST REQUESTS FOR INFORMATION, MEETINGS, TELEPHONE CALLS, AND OTHER DISCUSSIONS RELATED TO ELEMENT.
- a. Telecon I. Don-Doncow, T. Sarver, Bechtel, to P. Nesbitt, J. Hutson, H. Frederick, TVA, (09/05/86)
- b. Telecon I. Don-Doncow, J. Wheeler, R. Principe, T. Sarver, Bechtel, to P. Nesbitt, T. Shea, TVA, (09/16/86) 00260(10/31/86)
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