ML20154J069
| ML20154J069 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 09/19/1988 |
| From: | Gridley R TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| IEB-88-008, IEB-88-8, NUDOCS 8809220229 | |
| Download: ML20154J069 (4) | |
Text
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TENNESGEE VALLEY AUTHORITY CH ATTANOOGA, TENNESSEE 37401 5N 1578 Lookout Place N
SEP 191988 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C.
20555 Gentlemen:
In the Matter of
)
Docket No. 50-327 Tennessee Valley Authority
)
SEQUOYAH NUCLEAR PLANT (SQN) UNIT 1 - NRC BULLETIN 88-08. THERMAL STRESSES IN PIPING CONNECTED TO REACTOR COOLANT SYSTEMS
Reference:
TVA letter to NRC dated Augu'st 24, 1988, "Sequoyah Nuclear Plant (SQN) - NRC Bulletin 88-08 Thermal Stresses in Piping Connected to Reactor Coolant Systems" As required in item 2 of the Reporting Requirements section of the subject bulletin, this submittal provides confirmation of completion and i
the results of action 2 for unit 1.
Nondestructive examination (NDE) was completed for 34 welds and 5 sections of base material on August 25, 1988. No unsatisfactory indications were found. The enclosure lists a i
summary of the NDEs that were performed.
The remainder of the actions required by the subject bulletin will be completed in accordance with the schedules submitted in the referenced letter.
Please direct questions concerning this issue to Kathy S. Whitaker at (615) 870-7748.
Very truly yours, TENNESSEE VALLEY AUTHORITY R.Gr(dley, Manager i
Nuclear Licensing a d Regulatory Affairs cc: See page 2 l
UVRESEEgggy, Pbh r6 iL
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2 SEP 191988 t
U.S. Nuclear Regulatory Commission b
cc (Enclosure):
Ms. S. C. Black Assistant Director for Projects TVA Projects Olvision U.S. Nuclear Regulatory Connission One hhite Flint, North 11555 Rockville Pike Rockville, Maryland 20852 i
Mr. F. R. McCoy, Assistant Director for Inspection Programs TVA Projects Division U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, NN, Suite 2900 Atlanta, Georgia 30323 l
^
Sequoyah Resident Inspector Sequoyah Nuclear Plant 2600 Igou Ferry Road Soddy Daisy, Tennessee 37379 I
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4 ENCLOSURE SQN UNIT 1 NONDESTRUCTIVE EXAMINATIONS COMPLETED AUGUST 25, 1988
The f011owing welds tore nondestructively exa ined by liquid penetrant examination using a procedure 9,9411fied to Sections V and XI of the American Society of Mechanical Engineers (,'.SHE) code,1977 edition with addenda through the summer of 1978.
CVCF-213 SIW-1 SI-1694 CVCF-214 SIW-2 SI-1695 CVCF-246 SIN-3 SI-1696 CVCF-246A 3IN-4 SI-1697 CVCF-246B SI-1605 SI-1698 i
CVCF-247 SI-1606 SI-1699 t
CVCS-414 SI-1607 CVCW-4 SI-1608 t
CVC-2599 SI-1609 CVC-2599A SI-1610 l
CVC-25998 SI-1611 CVC-2599C SI-1612 CVC-2600 S1-1692 CVC-2601 SI-1693 The following welds and sections of base material were ultrasonically examined. These examinations were performed using a procedure qualified to Sections V and XI of the ASME code, 1977 edition with addenda through the i
summer of 1978.
Enhenced techniques similar to those recommended in NRC Bulletin 88-08, supplement 2, were used.
HELDS SCAN LIMITATIONS 1
l CVCF-213 Limited coverage because of lotrados of elbow i
CVCF-214 Limited coverage because of nozzle and t
Intrados of elbow CVCF-246 Limited coverage because of intrados of elbow CVCF-246A None CVCF-246R None CVCF-247 Limited coverage because of nozzle and weld crown 1
CVCS-414 Limited coverage because of intrados of elbow i
ELBOWS SCAN LIMITATIONS i
J i
CVCF-246/CVCS-414 Limited coverage because of intrados of elbow CVCF-213/CVCF-214 Limited coverage because of intrados of i
elbow l
PIPE SCAN LIMITATIONS CVCS-414/CVCF-246A None l
CVCF-246A/CVCF-246B None i
i CVCF-246B/CVCF-247 None l
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