ML20005G231
| ML20005G231 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 01/10/1990 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML17223A460 | List: |
| References | |
| NUDOCS 9001180312 | |
| Download: ML20005G231 (3) | |
Text
R7' ~
f
~(
UNITED STATES
- [.
p.
NUCLEAR REGULATORY COMMISSION
%.....)f
. r,,
wAssiwovoN, D. C. 20666 SAFETY EVALUATION BY THE OFFICE OF NUOLEAR REACTOR REGLA.ATION RELATED TO AMENDMENT NO. a3 TO FACILITY OPERATING LICENSE NO. NPF-16 FLORIDA POWER & LIGHT COMPANY. ET AL.
p ST. LUCIE PLANT. UNIT NO. 2 DOCKET NO. 50-389 I
1.0 INTRODUCTION
Amendnent No. 39, issued on February 7,1989 for the St. Lucie plant Unit No. 2, 1
revised emergency diesel generator surveillance testing requirenents to meet the reconenendations contained in the Generic Letter 84-15. " Pro Actions to improve and Maintain Diesel Generator Reliability." posed Staff Generic Letter 84-15 concluded that the frequency of diesel generator fast, cold starts from anbient conditions should be reduced to prevent premature diesel engine degra-dation, and encouraged licensees to amend their Technical Specifications according ly.
As a result of Amendnent No. 39, a difference now extsts between Action Statements 3.8.1.1.a and 3.8.1.1.f, both of which pertain. to similar operating conoitions of the emergency diesel generators, i.e., when one offsite power source is inoperable.
By letter dated July 26, 1989, the licensee proposed a change to the surveillance requirements of the Action Statement 3.8.1.1.f to be consistent with the requirements of Action Statement 3.8.1.1.a.
2.0 EVALUATION The proposed change would reduce the frequency of diesel engine starts and diesel engine fast, cold starts.
The current frequency is to test the diesel 1
generator within I hour of one of the offsite power sources becoming inoperable and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter, using the fast, cold start ap> roach.
The proposed change would require that each diesel be tested within 241ours when one offsite circuit is inoperable if each diesel generator was not success-fully tested within the past 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
The provision for reducing the fast, cold starts would also apply.
The reduction of the periodic testing and type of start of the diesel generator during)the period of time when an offsite circuit is not operable (up to 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> is justified on the basis that the L
operability of both diesel generators is assured because the diesel generators were tested during the previous 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, and, if not, they will be tested to oemonstrate operability within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of declaring the offsite circuit inoperable.
In addition, one offsite circuit would be operable.
The net effect of the change is to reduce the diesel generator testing frequency and type of start (fast, cold start) such that there is still a high degree of assurance that they would operate, if called upon, when one 9001180312 900110 ADOCK0500g9 F iR
_g, I
offsite circuit is inoperable.
The reduction of diesel generator testir.g i
frequency and type of start should increase the reliability of the machines because the engines will be properly conditioned before startup and the manner of starts will be decreased to reduce wear and tear. In addition, the proposed change will make the two Action Statements, 3.8.1.1.a and 3.8.1.1.f consistent.
i j
3.0 TECHNICAL FINDING Based on the considerations discussed above, the staff finds the proposed change to Action Statement 3.8.1.1.f acceptable.
4.0 ENVIRONMENTAL CONSIDERATION
This amendment involves a change with respect to the installation or use of a facility component located within the restricted area as defined in 10 CFR Part 20.
The staff has determined that the amendn.ent involves no significant increase in the amounts, and no significant change in the types, of any effluents that may be released off site, and that there is no significant increase in individual or cumulative occupational radiation exposure. The Commission has previously published a proposed finding that the amendn.ent involves no significant hazards consideration and there has been no public comnent on such finding. Accordingly, the amendment meets the eligibility criteria for categorical exclusion set forthin10CFR651.22(c)(9).
Pursuant to 10 CFR 51.22(b), no environmental impact statement or environmental assessment need be prepared in connection with the issuance of the amendnent.
5.0 CONCLUSION
We have concluded, based on the considerations discussed above, that (1) there l
is reasor.able assurance that the health and safety of the public will not be endangered by operation in the proposed manner and (2) such activities will g
be conducted in conpliance with the Commission s regulations, and the issuance of the amendment will not be inimical to the comon defense and security or to the health and safety of the public.
l Dated: January 10, 1990 l
l Principal Contributor:
L J. Norris l
l l
l I:
1-
y r
.i' y
.l DATED:
January 10. 1990 l
AMENDHENT NO. 43.T0 FACILITY OPERATING LICENSE NO. NPF ST. LUCIE, UNIT 2 l
L 4 pshet!F1id
)
4 hRC & Local PDRs PDII-2 Readin; i
S. Varga, 14/l/4 L
G.,Lainas,14/H/3 H. Berkow D. Miller J. Norris OGC-WF D. Hagan, 3302 MNBB i
E. Jordan, 3302 l#lBB-B. Grimes,)9/A/2 G. Hill (4 P1-137.
t Wanda Jones P-130A I
ACRS(10}11/F/23 J. Calvo l
GPA/PA OC/LFMB PD Plant-specific file [ Gray File]
~
M. Sin b le R-II
[
Others as required cc: Plant Service list i
1 i
i s
L l
i i
l.
-