ML20070L024
| ML20070L024 | |
| Person / Time | |
|---|---|
| Site: | Clinch River |
| Issue date: | 12/28/1982 |
| From: | Longenecker J ENERGY, DEPT. OF, CLINCH RIVER BREEDER REACTOR PLANT |
| To: | Check P Office of Nuclear Reactor Regulation |
| References | |
| HQ:S:82:164, NUDOCS 8212300343 | |
| Download: ML20070L024 (2) | |
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Washington $0-537 Docket No.
HQ:S:82:164 g'E 2 8 W 4
Mr. Paul S. Check, Director CRBR Program Office l
o Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Comission
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Washington, D.C.
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Dear Mr. Check:
j MARGIN IN THE PLANT PROTECTION SYSTEM (PPS) SET POINTS Per request by the Nuclear Regulatory Commission staff, enclosed is an illustration of the margin in the PPS set points. This demonstrater the
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project's application of instrument channel uncertainties._
Sincerely, i
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E' JDfJohn R. Longenecker Acting Director, Office'of
,j Breeder Demonstration Projects Office of Nuclear Energy s
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Enclosure i' ;
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Enclosure TYPICAL PERFORMANCE OF HIGH FLUX SUBSYSTEM R
116 E
- Saf ety Analysis Limit Calorimetric Uncertainty (1%)
A (115) and Margin (2%)
C 114 T
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112 - Upper Trip Band J
P 110 0
- Trip Setpoint (109)
Accuracy / Drift of Flux W
Instrumentation (2%) and Trip E
108 Comparator (1%) Combined Alge-R braically
(%)
106 - Lower Trip Band J
104 Control System Operating Band 102 and Margin 1
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100 - Full Power j
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