ML20073K008
| ML20073K008 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 04/12/1983 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8304190490 | |
| Download: ML20073K008 (2) | |
Text
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m-J TENNESSEE VALLEY AUTHORITY r
U'St4RCcilsiEnaA. Tennessec 374oi 47 AN '00bennNt' Street Tower II 4
.O APR 13 G I
April 12, 1983 SQRD-50-328/81-05 U.S. Nuclear Regulatory Commission Region II Attn:
Mr. James P. O'Reilly, Regional Administrator
'101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30303
Dear Mr. O'Reilly:
SEQUOYAH NUCLEAR PLANT UNIT 2 - RETRIEVABLE INFORMATION PROM VALVE TAG NUMBER - SQRD-50-328/81 FINAL REPORT The subject deficiency was initially reported to NRC-0IE Inspector M. Thomas on December 12, 1980 in accordance with 10 CFR 50.55(e) as NCR SQN CEB 8035. Iaterim reports were submitted on January 12, March 2, April 2,. June 11, and September 22, 1981, and April 7, and November 30, 1982. Enclosed is the final report for the subject deficiency.
If you have any questions, please get in touch with R. H. Shell at
.FTS 858-2688.
Very truly yours, TENNESSEE VALLEY AUTHORITY t-b\\>2L L. M. Mills,, Manager Nuclear Licensing l
Enclosure cc:
Mr. Richard C. DeYoung, Director (Enclosure)
Office of Inspection and Enforcement U.S. Nuclear Regulatory Conunission l
. Washington, D.C.
20555 Records Center (Enclosure)
-Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 l
Atlanta, Georgia 30339 l
[O ALCODY R
i PDR gp An Equal Opportunity Employer
~
y
-y ENCLOSURE SEQUOYAH NUCLEAR PLANT UNIT'2 RETRIEVABLE INFORMATION FROM VALVE TAG NUMBERS NCR SQN CEB 8035 SQRD-50-328/81-05 10 CPR 50.55(e)
FINAL REPORT Description of' Deficiency Manufacturer's valve der. wings which include pertinent engineering data used 'in piping analysis and other design calculations cannot be readily retrieved throu;f.: any TVA documentation system as required by 10 CFR 50, -
Appendix B.
Proper identification of valves should be maintained by part number, serial number, or other appropriate means on the valve bodies and cross-referenced on all associated drawings and permanent records. This identification is used for the retrieval of records an.1 is designed to
- prevent the use of incorrect parts and components in piping systems.
Safety Implications Without these controls, a piping analysis may utilize an incorrect valve. weight which could invalidate the seismic analysis of various safety-related systems. This could lead to pipe failure during a seismic event and reduced safety injection system (SIS) coolant flow rate to the core, which could adversely affect the safety of the plant.
Corrective Action Engineering change notice L-5680 has been issued in order to revise TVA drawing' series 47A365 and 47A366 to cross reference the.
manufacturer's valve drawing numbers for all QA valves. These o
drawings will be revised by August 31, 1983, and will be kept current each time a new valve is added to the system._
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