ML20055J410
| ML20055J410 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 07/27/1990 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20055J408 | List: |
| References | |
| NUDOCS 9008020218 | |
| Download: ML20055J410 (3) | |
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EllCLOSURE_2 SAFETY EVALVATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION S U P P O R T I N G AM E NDM E NT_.p0,, 1,42 T,0_,F AC I L I T_Y,,0 P E,R,A,TJ P G,LJ,C E N S,E,,N.0,.,,0 P R
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DOCKET NO. 50-327 1.0 I_HTRODUCTION By letter dated f*ay 4, 1990, the Tennessee Valley Authority (TVA) proposed changes to Section 3/4.3.3, Monitoring Instrumentation, of the Sequoyah Nuclear Plant, Units 1 and 2, Technical Specifications (TSs). These changes would add two smoke detectors to Table 3.3-11, Fire Detection Instruments. These smoke detectors were to be installed in the Cycle 4 refueling outage for each unit.
This is TVA Change Request 90-07.
The two smoke detectors have been installed at Unit 1; therefore, the evaluation given below is on the proposed change to add these detectors to the Unit 1 TSs.
The detectors for Unit 2 will be installed during the Unit 2 Cycle 4 refueling which is scheduled to begin in October 1990.
The proposed change for Unit 2 will be the subject of a separate. evaluation to be issued by the staff after the detectors are installed. The evaluation below discusses the proposed changes to the Unit 1 TSs, but applies also to the changes proposed fur the Unit 2 TSs.
2.0 EVALUATION I
TVA proposed to revise Table 3.3-11 to reflect the addition of two smoke detectors in the volume control tank room during the Cycle 4 refueling outage for each unit. TVA stated that it is installing the two photoelectric smoke detectors in the room entry labyrinth to provide redundant. fire protection in the entry labyrinth. The modification will provide detectors cross-zoned in 3
the same area so that the failure of one smoke detector will not result in a loss of fire detection capability in the room entry labyrinth. TVA_ stated that the TSs contain surveillance requirements for fire detection instrumentation which protects safety-related equipment and, because the additional smoke detectors in the volume control tank room meet this criteria, it proposed that these detectors be included in the TSs.
l The staff reviewed the proposed changes to Table 3.3-11 and agree that.the two l
additional smoke detectors should be included in the table. This is an administrative change which does not revise any fire protection requirements in the TSs except to add the two additional detectors to Table 3.3-11 because the-detectors have been installed. Therefore, the staff concludes that the proposed change is acceptable.
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- 3.0 ENVIR0 fit!EllTAL CONSIDERATION This amendment involves a change to a requirement with respect to the installation or use of a facility compohant located within the restricted area as defined in 10 CFR Part 20 and changes to the surveillar.ce requirements.
The staff has determir.ed that the amendment involves no significant increase in the amounts, and no significant change in the types, of any effluents that may be released offsite, and that there is no significant increase in individual or cumulative occupational radiation exposure.
The Comission has previously issued a proposed finding that this amendment involves no significant hazards consideration and there has been no public comment on such finding. Accordingly, the amendment meets the eli forth in 10 CFR 51.22(c)(9)gibility criteria for categorical exclusion set Pursuant to 10 CFR 51.22(b), no environmental irrpact staten.ent nor environmental assessment need be prepared in connection with the issuance of this amendment.
4.0 CONCLUSION
The Ccmmission n. ado a proposed determination that the amerdirent involves no significant' hazards consideration which was published in the Federal Pegister (55 FR 24004 on June 13, 1990 and consulted with the State of7ennessee.
No public comments were received and the State of Tennessee did not have any comments.
The staff has concluded, based on the considerations discussed above. that:
(1) there is reasonable assurance that the health and safety.of the.
will not be endangered by nperation in the proposed manner, and (2) public such activities will be conducted in. compliance with the Commission's regulations, and (3) the issuance of the amendments will not be inimical to the common defense and security nor-to the health and safety of the public.
Principal Contributor: Jack Donohew Dated: July 27, 1990 l
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e AMENDMENT NO.-
FOR SEQUOYAH UNIT NO 1 - DOCKET NO 50-327' DATED:.,ju)y,27,,1990_,
DISTRIBUTION:
iDettet11]{3!
Plant Reading File S. Varga G. Lainas H. Krebs J.Donohew(2)
.0GC D. Hagan i
E. Jordan l
G. Hill (4 per docket)
C. McCracken J. Calvo ACRS(10)
GPA/PA OC/LFMB N.- Ervin, NRR, for Security Plan Amendments) cc: Plant Service List
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