ML17206A692
| ML17206A692 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 02/07/1979 |
| From: | Wethy C FLORIDA POWER & LIGHT CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NUDOCS 7903200082 | |
| Download: ML17206A692 (2) | |
Text
Q6IJPSL Ltr, Bk d403 P T T~Pg7-).- gg
+EP P.Q. GGX 128. PT. PIQRCF I'L O'JwfcI
.PI Pj.'LONOA POIAKA b
@WHEE COVPa February 7,
1979
~~'~~Phil Copies to Q%4, JHB, CAB, CRT ~ RRJ DfX'site:
ADS, JRB,
- COP, HAS, RHl, KNH To:
Nr. J.
P. O'Reilly, Director, Region XX Office of Inspection and Enforc~nt U.
S. Nuclear Regulatory Cccnaission Atlanta, George 30303 Prma:
Hr. C. N. Qechy, Plant Manager St. Lucie Plant DPR 67 Florida Power '6 Light Ccxapany hami, Florida
Subject:
~O FOR FACSIMILE TRAXSAZSSXOM TO CONFXRlj PRO!PT REPORTABLE occuaszwcz 335-79-3, TKI sAFErr INJEGTzml TANKs aUT OF spzczzxcATzoN I'ORM COHCENTRATEGH.
This is to confirm our celephone notification on the subject eyent to Hr.
E H.
webster of your office at 3:25 p.m., February 6, 1979.
At noon, February 6, 1979, the Chemistry Department reported char. routine monthly s~ples of Safety traction tank (all 4 tanks) boron concentration revealed that two tanks (of 4 total) vere at 1645 ppm boron which is 75 pp<<u, belaud the Specificat'ion 3.S.l.c limit of
> 1720 ppa.
AGTEON was mediately taken and the turbine and reactor Mere shut dawn by 12:50.p.m.
(The plant
~-------~s tripped frogwbouc 30 :Q due to stean generaror level osciilacions.)
The exacc cause of the low boron concentration is not yet known.
- However, che tanm were filled at the end of our last maintenance outage and it is possible that the sample lines vere not flushed properly ~%en the tan'cs were sanpLed.
Me will investigate and include our findings in the Licensee Event Report
~
The 2 tanfcs have been returned to proper concentration and the unit returned to operation-No potential public hazard existed as 1645 ppm is more than sufficient for reactivity control in the remote event of the tanks beS~g used.
(1720 ppa will maintaia rhe reactor shutdo<<e in a cold, all rods out, configuration.)
Me plan ro investigate the possibility of requesting a change in Specification 3.5.1 regarding time limits for correctingI boron concentration..
This is a prompt report as the Specifications only discuss 1 safety injection tank having a parameter, such as boron concentration>
out of tolerance.
Plant, Manager St. Lucia Plant
'9o>>o ooze
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