ML19329A700
| ML19329A700 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 09/13/1976 |
| From: | DUKE POWER CO. |
| To: | |
| Shared Package | |
| ML19329A692 | List: |
| References | |
| RO-287-76-14, NUDOCS 8001090682 | |
| Download: ML19329A700 (2) | |
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OCONEE UNIT 1 Report No.:
R0-287/76-14 Report Date:
September 13, 1976
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Occurrence Date: August 30, 1976 Facility:
Oconee Unit 3, Seneca, South Carolina Identification of Occurrence:
Failure to sample core flood tanks for boron concentration following makeup Conditions Prior to Occurrence: Unit at 100 percent full power Description of Occurrence:
On August 30, 1976, it was determined that during June, 1976 six additions during a seven-day period had been made to the 3B Core Flood Tank without performing the boron concentration sampling required by Oconee Technical Specification 4.1.2.
Apparent Cause of Occurrence:
The apparent cause of this occurrence was the lack of an adequate program for sampling the core flood tanks following makeup and for documenting the chemical analyses of the samples.
Analysis of Occurrence:
This occurrence resulted in one core flood tank not being sampled for boron concentration following six additions to the tank. Four of these additions were taken from the boric acid mix tank and had a combined volume of 35 gallons which should have increased the boron concentration. The remaining two additions, with a combined volume of 100 gallons, were taken from the demineralized water header. A calculation has been performed which utilized the last known chemical concentration of the core flood tank, 2254 ppm, and considered the addition of the demineralized water to the 6400 gallon core flood tank.
It has been determined that the boron concentration of the core flood tank remained within the Technical Specification limits throughout this occurrence.
It is therefore concluded that the health and safety of the public was not affected by this incident.
Corrective Action:
A program has been established requiring that sample request forms be submitted to the Chemistry Department following the completion of makeup to those tanks requiring a chemical sample.
Specific times have been established for each tank requiring samples. The time that the sample is to be taken is delineated on this request form.
An entry will be made in the control room log stating the time of makeup, the time the chemistry 8001090 882
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sample is requested and the results of the sample when received.
It is considered that this corrective action will prevent recurrence of this incident.