ML19322D210
| ML19322D210 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 03/26/1979 |
| From: | Twilley R BABCOCK & WILCOX CO. |
| To: | Rogers L BABCOCK & WILCOX CO. |
| References | |
| TASK-TF, TASK-TMR NUDOCS 8002100055 | |
| Download: ML19322D210 (2) | |
Text
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..vTF. INSTRUCTION NO....__
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j L. C. Rogers, Site Operations Manager, TMI-2 APPROVED M
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File No.
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TMI-2 T3.5 Subj.
Date TMI-2 Loop A Gentile Perfomance March 26, 1979 lru.i..................,.....,.
Due to the degraded signal from the Loop A Gentile Flovmeter, B&W reccmmends limiting operation of TMI-2 to 98% FP.
This is based on the fact that data from the device indicates the possibility of a longer delay time than that observed previously.
The delay time may still be within the limit assumed in the safety analysis.
However, additional coastdown data is necessary to confim this. Specifically, A four pump coastdown fro = HZP conditions must be performed. This particular case must be run because a baseline case, prior to the degradation, exists which can be used to detemine, by comparison, any change in delay time. Data should be taken per TP 200.12. Gentfle AP's should be recorded at a minimum of 0.2 sec. intervals along with a means of deter =ining the time of pump trip (1.).
Based on Lynchburg Engineering's evaluation of this data, B&W may be able to justify operation at 100% FP.
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