ML20151T578
| ML20151T578 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 08/10/1988 |
| From: | Gridley R TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| NUDOCS 8808160410 | |
| Download: ML20151T578 (5) | |
Text
P
's TENNESSEE VALLEY AUTHORITY CHATTANOOGA. TENNESSEE 37401 SH 157B Lookout Place JLlJ6101980 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C.
20555 Gentlemen:
In the Matter of
)
Docket Hos. 50-327 Tennessee Valley Authority
)
50-328
.SEQUOYAH NUCLEAR PLANT (SQN) - REPLACEMENT ITEMS PROGRAM (RIP) SUPPLEMENTAL PROGRAM PLAN In response to a letter from S. D. Richardson to S. A. White dated May 25, 1988, 1 am providing the implementation schedulo for the RIP supplemental program plan. As indicated in the implementation schedule provided as enclosure 1, the warehouse review of items related to 10 CFR 50.49 and seismic sensitive items within the restart phaso of the Design Baselino and Verification Program (DBVP) is complete.
As discussed with George Hubbard, of your staff, on July 20, 1988, many of the elements of the supplemental program plan have been implemented with soveral being completed.
Evaluation of unit 1 to the condition adverse to quality reports (CAQRs) f %3t were written against unit 2 for lack of sufficiently dedicating items related to 10 CFR 50.49 has been completed, and required corrective actions have been identified.
Another element of the program plan that has been implemented is the preengineered item speelfication (PEIS).
This is an ongoing activity.
The warehouse evaluation of all stock items related to 10 CFR 50.49 is complete. With respect to the warehouco inventory of seismic-sensitivo items, SQN has completed a large samplo of items and has found no instances where seismic qualification has been degraded.
This large sample, in addition to the extensive review effort of work requests reviewed for unit 2 restart, provides assurance that seismic qualification of systems within the restart phase of unit 1 DBVP has not been degraded as a result of replacement activity. Thereforo, as discussed with Mr. Hubbard, TVA propcsos that thin element of the program plan is complete. provides additional information demonstrating completion of this activity.
Tho Institute of Electrical and Electronics Engineers (IEEE) Standard 344/1975 review of seismic-sensitive items is scheduled to start in October 1988 and should be complete by May 31, 1989. However, TVA has committed this item to g7 be completed by tho end of cycle 4 for each unit.
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PDR ADOCK 05CK)D327 i
P PNU An Equal Opportunity Employer
. - IJ.'S, Nuclear Regulatory Commission AUB 101988 in summary, the implementation schedule for the RIP supplemental program plan has ensured that items related to 10 CFR 50.49 and seismic-sensitive items within the restart phase of DBVP systems have been sufficiently addressed for restart of unit 1.
The scheduto change of this response was discussed with J. H. Donohow on July 1, 1988.
If you have any questions, please telephone M. A. Cooper at (615) 870-6549.
Very ttvly yours, TENNESSEE VALLEY AUTHORITY
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r3 loy, Mana'et Nuclear Licensing and Regulatory Affairs Enclosures cc (Enclosuros):
Ms. S. C. Black, Assistant Director for Projects TVA Projects Division U.S. Nuclear Regulatory Commission One White Flint, North 11555 Rockvillo Pike Rockville, Maryland 20852 Mr. F. R. McCoy, Assistant Director for Inspection Programs TVA Projects Division U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Suito 2900 Atlanta, Georgia 30323 Sequoyah Resident Inspector Sequoyah Nuclear Plant 2600 Igou Ferry Road Soddy Daisy, Tonnessco 37379
N.S.NuclearRegulatoryCommission AU6101988 In summary, the implementation schedule for the RIP supplemental program plan has ensured that items related to 10 CFR 50.49 and seismic-sensitive itens within the restart phase of DBVP systems have been sufficiently addressed for restart of unit 1.
The schedule change of this response was discussed with J. N. Donohew on July 1, 1988.
IC you have any questions, please telephone M. A. Cooper at (615) 870-6549.
Very truly yours, TENNESSEE VALLEY AUTi!0RITY Original Signed By.
M. J. Ray R. Cridley, Manager Nuclear Licensing and Regulatory Affairs Enclosures cc (Enclosures):
Ms.
S. C. Black, Assistant Director for Projects TVA Projects Division U.S. Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852 Mr. F. R. McCoy, Assistant Director for Inspection Programs TVA Projects Diviolon U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Sulto 2900 Atlanta, Georgia 30323 Sequoyah Resident Inspector Sequoyah Nuclear Plant 2600 Igou Ferry Road Goddy Daisy, Tennessee 37379 I
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ENCLOSURE 1 j
RIP SUPPLEMENTAL PROCRAM PLAN IMPLEMENTATION SCllEDULE Commitment Schedule-Warehouse Review of items Related to 10 CFR 50.49 Complete Warehouse Review of Seismic-Sensitive Items Completc *
+
Within The Restart Phase of DBVP Review of Unit 2 CAQRs For Applicability Complete
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to Unit 1 PEIS Implemented (ongoing activity)
IEEE 344/1975 Review Of Seismic-Sensitive Items Completion by the end (Projected Schedule:
October 1988 - May 1989) of cycle 4 for each unit
- See enclosure 2 for information on completion of this item.
T' ENCLOSURE 2 INFORMATION DEMONSTRAT1HG COMPLETION OF UNIT 1 SEISMIC EVALUATION FOR RESTART The large review effort for unit 2 restart and subsequent warehouse evaluation activities have resulted in no instances where seismic qualification of safety-related equipment has been degraded.
This provides assurance that seismic qualification of systems within the restart phase of unit 1 DBVP has not been degraded as a result of coplacement item activity.
For unit 2 restart, more than 13,000 maintenance requests (that replaced material in unit 2 and common DBVP systems) and an additional 10,000 material issuance requests were evaluated for seismic impact. No instances were found where selsmic qualification of equipment was degraded.
As documented in the supplemental program plan, 93 percent of the material evaluated originated in the warehouse. Because the warehouse is common to both SQN units, the results of the unit 2 restart ef fort are applicable to unit 1.
Since February 1988, all Quality Assurance (QA) Level II (items purchased au commercial grado) material issues to the plant have been evaluated.
Combined with the ongoing procurement dedication activity, this has resulted in the evaluation of about 3,500 of 5,500 QA Level 11 warehouse inventory items with issuance history. No instances have been found where the seismic qualification of safety-related equipment was degraded.
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