ML20062F658
| ML20062F658 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 11/19/1990 |
| From: | Wallace W TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9011280103 | |
| Download: ML20062F658 (7) | |
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TENNESSEE VALLEY AUTHORIT /
CHATTANOOGA, TENNESSEE.374ol SB Lockout Place NOV 191990 U.S. Nuclear Regulatory Comission ATTN: Document Control Desk Washington, D.C.
20555 1
Centlement
^l In the Matter of
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Docket Nos. 50-327
'Annessee Valley Authority
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50-128 4
SEQUOYAH NUCLEAR PLANT (SQN) - PEQUESTED INFORMATION REGARD *?G POSTRESTART.
COMMITMENTS AND WELDING PROGRAM IMPLEMENTATION
Reference:
Letter from F. J. Hebdon-(NRC)-to'O. D. Kingsley, Jr., dated October 2, 1990, " Changes.in TVA Commitment Completion Dates-(TAC Nos. R00419/R00420) - Sequoyah Nuc1 car Plant. Units 1 and 2" The information' requested in the. referenced let'ter t'egarding postrestart i
commitments is contained in the enclosures to this letter.
provides the commitment, original forecasted completion date,-status, and current expected completion date for uncompleted commitment.: that TVA made to justify the restart of Units 1 and 2-in 1988. Enclosure 2 provides a summary of the implementation status at SQN for the TVA welding program.
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The enclosed information should address your concerns regarding the revision y
of implementation dates for commitments made to support the restart of i
SQN Units 1 and 2.
It is significant to note that more th m i
850 NRC commitments have been completed at SQN since Unit 2 was restarted in May 1988. A significant expenditure of_ resources was dedicated to the completion of postrestart commitments principally during the Unit 2 Cycle 3 and Units 1 and 2 Cycle 4 refueling outages-and the majority of postrestart commitments are now complete.
As. detailed-in Enclosure 1, 11 commitments that were made to justify the restart of Units 1 and 2 are not yet complete.
For 3 of these items, expected completion-dates are later than the. original-forecasted completion date; however, in each case, significant progress has been made. Specific completion dates for 5 of the_11 remainir.g commitments l
were not originally provided to NRC, i.e., they were identified as postrestart l-activities. Completion efforts for these items have been scheduled consistent with the integration of overall objectives and are ongoing as indicated..
With regard to site implementation of the TVA welding program, TVA remains confident of achieving the current January 2, 1991, site implementation date as described in Enclosure 2.
Although delays 'have been encountered during. the '
implementation, significant progress has been achieved.
Corporate standards have been issued to implement a consclidated welding program.. Site procedures have been drafted to comply with the' corporate standards and will be issued:by.
the January 2, 1991, commitment date. Delays resulted from the resolutior af fhC 7
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An Equal Oppertunity Empicyer
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e U.S. Nuclear Regulatory Commission g gg g the large volume of comments received during the corporate standard review and additional revision of the standards to address all of the attributes of the welding program included in Standard 3.1.7, Revision 0, " Control of Special Processes." These delays were resolved as' expeditiously as practical, and current commitment dates on the welding program will be achieved.
e TVA is aware of.the importance of timeliness in implementing all NRC-commitments and is sensitive to the significance of those commitments made to justify the restart of the SQN units.
Processes are currently in place to ensure the appropriate. allocation of resources to achieve timely commitment implementation as is consistent with safe and reliable operation.
These
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processes are generally successful, as-can be evidenced by TVA's overall commitment completion performance.
However, on occasion, emergent. issues or unforeseen problems may prevent the implementation of a commitment as originally scheduled.
Please be assured that commitment implementation schedules are never shif ted arbitrarily and receive careful management review before rescheduling, and that every commitment is treated with-regard to timely completion. TVA will continue to strive for excellenet commitment performance.
.f you have any questions concerning this submittal, please alephone Mark Medford at (615) 751-4776.
Very truly yours, TENNESSEE VALLEY AUTHORITY Ys
. G. Wallace, Manager Nuclear Licensing and
-Regulatory Affairs' Enclosures cc: See page 3 L
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, i Pf0V19jgsqy U.S. Nuclear Regulatory Commission l
ec (Enclosures):
Ms. S. C. Black, Deputy Director 7
Project Directorate II-4 U.S. Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852 Mr. J. N. Donohew, Project Manager U.S. Nuclear Regulatory Commission-One White Flint ~,horth 11555 Rockville Pike Rockville, Maryland 20852:
NRC Resident Inspector
-Sequoyah Nuclear Plant 2600 Igou Ferry Road Soddy Daisy, Tennessee 37379-Mr. B. A. Wilson, Project Chief U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 l
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ENCLOSURE'1 COMMITMENTS MADE T0 JUSTIFY THE RESTART OF UNITS 1 AND 2 i
IN 1988 THAT HAVE NOT.BEEN COMPLETED TO DATE-t 1.
Commitment Number: NCO 860213030.
Subject:
Steam generator lower support configuration.
l Commitment:
TVA is to obtain calculations from Westinghouse Electric Corporation, Inc., to reflect present configuration of steam generator lower supports.
Completion of the ections listed in Section III of the revised response to Deficiency D4.3-3 will be determined'after receipt and review of structural analysis from Westinghouse.
Original forecasted completion date:
Postrestart;-no specific schedulo given.
i Status: Calculations were completed by Westinghouse for two representative loops on July 5, 1990.- TVA.is evaluating'the calculations. However, the Final Safety' Analysis Report _(FSAR) cannot be updated until the structural evaluations:forl Unit 2 are completed (commitmens item 7).
Current expected completion date: Unit 2 Cyc'le 5-(U205) refueling outage.
2.
Commitment Number: NCO 860297043, t'ubject:
Procedures - long-term.
Coamitment: Procedures that are ider*,1fied as requiring development or revision but that are not important to the start-up and' operation of t
Sequoyah Nuclear Plant (SQN):will.be included in the long-term corporate procedures upgrade program.
Original forecasted completion date:~ Postrestart;'no specific schedule given.
Status:
Procedures are being, revised in accordance with theLongoing upgrade program.
Carrent expected completion date:
February 1. 1992.
3.
-<mmitment Number:
NCO 870104002.
Subject:
Surveillance instruction (SI) enhancement program.
Commitment: A long-term program to ensure complete administrative consistency, to achieve standard format and organization, and to make other improvements and enhancements will=be undertaken and completed at a later date.
Original forecasted completion date:' Postrestart; no-specific schedule'given.
Status:. Procedures'are being revised in accordance with.the ongoing-SI enhancement program.
Current expected completion date: February 1, 1992.
4.
Commitment Number: NCO 870324035.
Subject:
Cable Routing Program.
Commitment: A ccble routing progran l '. be conducted as listed in w
Enclosure.3. This. program should be completed by-January.1990 for Units 1 and 2.
(Schedule revi
.co Merch 1, 1991, by letter _to NRC.
from M. J. Ray dated January 13, 1990 i
. -I Original forecasted completion date:
January 1990.
L Status: Completion of the' signal tracing for' Unit 2 was completed during the Unit 2 Cycle 4 (U2C4) refueling outage; this data is being incorporated-into the cable routing program.
Current expected completion date: March 1, 1991.
5.
Commitment Number:
NCO 870324058.
Subject:
DBVP Phase 2 Instrumentation.
Commitment:. A Phase 2 (all'other safety-related instruments) instrumentation effort will be conducted to determine if any other t
safety-related instrumentation exists-requiring commensurate procedural controls for the valves.
Original forecasted completion date:- Postrestart; no sp9eific date given.
Status: Being implemented,under the Maintenance' instruction /SI enhancement effort. Refer to Item 3.
Current expected completion date: March 1, 1992 6.
Commitment Number:
NCO 870361034.
Subject:
FSAR - Incorrect l'ipe Support Allowable Stress.
Commitment:
To resolve this condition in the civil and structural arca,-
Design Criteria SQN-DC-V-1.3.3.1 and other original design criteria are being revised to specify that evaluations and modifications of existing structural features and the design of added: features in existing structures will be performed using the original design basis criteria.
Since issuance of-SQN-DC-V-1.3.3.1,. civil and structural work is being reviewed to determine the effect on licensing commitments.
FSAR revisions are to be made as required to ensure that civil and.
structural critoria and the FSAP. are in agreement. The above corrective actions associated with'CAQR SQP871388 will be completed as Unit 2 postrestart activities.
1 Original forecasted completion date:
Postrestart; no specific date given.
Status: Calculations
.e complete and.in final review.
Current expected completion date:
November 22, 1990.
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Commitment Number:
NCO 880008009.
Subject:
DBVP - Lower Steam Generator Supports.
Commitment:
Structural evaluations of steam generator lower support I
as-built data shall be performed-prior to U2C5 refuelingsoutage.-
Original forecasted completion date: 'U205' refueling outage.
l Status: Calculations are in process.
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Current expected completion date:
The structural evaluations'will be-complete.i prior to U2C5 refueling outage.
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Commitment Number: NCO 880010006.
Subject:
Qualification of platforms (Civil EngineeringtBranch 2 through 6).
Commitment: The structural evaluation of the as-constructed data will be 1
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completed before U205 refueling outage.
Original forecasted completion date: U205 refueling outage.
Status: As-constructed data was collected during U204;' calculations are in process.-
Current expected completion date: U205 refueling; outage.
9.
Commitnent Number: NCO 880035001.
Subject:
Phase I of SQN Q-List.
j Commitment: All systems included in /hase I of the SQN Q-list will be j
issued by the end of April 1989. _(Schednie revised to January 30, 1990, by letter to NRC from C. H. Fox dated April 10, 1989, and to-January 4, 1991, by letter to NRC from M.=0. Medford dated July 2, 1990.)
Original forecasted'r
' tion date:
C 11 190 L a
Status:
Packages is.ct
.r 36 sys' 2. packagus for 10 remaining
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systems are in proc <..
Current expected completion date: January 4, 1991.
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Commitment Number: NCO 880039026.
Subject:
Temperature control valves (TCVs).
j Commitment: The TCVs will'be replaced by-Design Change' Notice (DCN) X00222.
This DCN will be completed by December 31, 1989.
(Schedule revised to March 29, 1991, by letter to.NRC from M.-J. Ray I
dated January 19, 1990.)
l Original forecasted completion date: December 31, 1989.
Status: Shutdown board room chiller TCVs.have been_ replaced under DCNs 735 and 618.
Replacement of TCVs in the electrical board room-i and main control room chillers remain.
Current expected completioa date:
March 29, 1991'.
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Commitment Number: NC0890192003
Subject:
Welding program.
Commitment:
Implementing procedures will be: developed-and issued sepat a-in accordance with the TVA corporate standards program.'
(Schedt revised from April 15, 1990, to June 30, 1990, by. letter.to NRC.
from M.
J. Ray dated January 2, 1991, by letter to NRC from M. O. Medford datec July 2, 1990.)
Original forecasted completion date: April'15. 1990.
4 Status:
In process.
Refer to Enclosure 2.
Current expected completion date: January 2,=1991.
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ENCLOSURE 2
SUMMARY
OF THE IMPLEMENTATION STATUS AT SQN FOR THE TVA HELDING PROGRAM TVA remains confident that the current commitment dates concerning the welding l
program will be achieved.
The following summarizes the implementation of the welding program commitments with an explanation of the delays experienced.
TVA originally committed to consolidate the welding project into a corporate standard by January 15, 1990, and issue site implementing procedures within 90 days af ter issuing the corporate standard, as required by TVA's corporate nuclear standards program.
As stated in a letter from M. J. Ray to NRC dated January 12, 1990, issuing the corporate standard was delayed because of the large volume of comments f rom organizations within TVA. The commitment to.
Issue the corporate standard was changed to March 30, 1990, with the site standards to be issued 90 days thereafter. Corporate Standards 7.1.7, Revision 0, " Qualification and Certification of Nuclear Power Personnel Performing Welding,' Brazing, and Soldering"; 3.1.7, Revision 0, " Control of Special Processes"; 10.3.10, Revision 0, " Controlling Welding, Brazing, and Soldering Processes"; and 10.3.11, Revision 0, " Controlling Welding, Brazing, and Soldering bhterials," were issued by the March 30, 1990, commitment date.
The site implementing procedures were to be completed by June 29, 1990.
In a letter f rom M. O. Medford to NRC dated July 2,1990, this commitment date was extended to January 2, 1991. Standard 3.1.7, Revision 0, identified 131 attributes of the welding program.
During the review for, site implementation, it was determined that Standard 7.1.7, Revision 0; Standard 10.3.10, Revision 0; and Standard 10.3.11, Revision 0, only addressed approximately 50 percent of these attributes. Therefore, these corporate standards required revision prior to issuing the site procedures.
The corporate standards were revised and issued on August 27,-1990..
Standard 7.1.7 was renumbered to be Standard 10.3.12.
Subsequent issuance of the site implementing' procedures was delayed by Unit 2 Cycle 4 refueling outage activities; however, the effort as scheduled will be completed by January 2, 1991.
The final commitment regarding the welding program ~ involves an effectiveness evaluation that is to be conducted six months after implementaU on cf the site procedures. A preliminary plan for this evaluation has already been initiated. The preliminary plan currently indicates that the effectiveness evaluation will te completed in a two-month period.
Based on the above described status for remaining welding program commitments.
TVA is confident that the current commitment dates will be met.
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