ML18283B577
| ML18283B577 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 10/10/2018 |
| From: | Tennessee Valley Authority |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| Download: ML18283B577 (1) | |
Text
BFNP-10 TABLE '7.4.6
SUMMARY
OF CSCS OPERATIONAL NUCLEAR SAFETy REOUIREMENTS Incident Detection Circuitry Components Nominal Trip Settln9 BWR Operating State D
above 122 psig Applicability Conditions above 122 prig HPCI 9 ADS Loop Selection System Initiation Non-Initiated Systems LPCI9 Condition Condition H
Condition*
I I I Required Number of Operable Components Condition"'ondition"'II Allowable Repair Time Action Required When Operability Not Assured (see note)
Surveillance Test Frequency (see note(
Remarks HPC IS trip system ADS trip system LPCIS trip systems CSS trip systems HPCIS trip system logics ADS trip system logics LPCIS initiation trip system logics LPCIS recirculation loop selection trip system logics CSS tnp system logics Parallel logic pairs HPCIS reactor vessel low water low water level (¹21 channels HPCIS primary containment high.
pressure channels ADS reactor vessel low water level
(¹1( channel ~
ADS primary containment high.
pressure channels ADS delay timer LPCI pump discharge pressure channels CSS pump discharge pressure channels LPCIS reactor vessel low water level
(¹lt channels LPC IS reactor vessel low water level
(¹2) channels LPC IS primary containment high-pressure channels CSS reactor vessel low water level
(¹1) channels CSS primary containment high-pressure channels 129.7 in, above top of active fuel 2 pslg 17.7 in. above top of active fuel 2 pslg 120 sec.
50 psig 185 psig 17.7 in. above top of active fuel 129.7 in. above top of active fuel 2 psig 17.7 in. above top of active fuel 2 psi9 X
X X
X X
X X
X X
X X
X X
X X
X X
X X
X 2 per tnp system 2 per trip system 2 per trip system I per trip system 2 per trip system I per trip system logic 2 per operable parallel logic pair 2 per operable paraRel logic pair 2 per tnp system logic 2 per trip system logic I per trip system logic I in an operable low pressure pump cooting path 2 per operable paragel logic pair 2 per operable parallel logic pair 2 per operable parallel logic pair 2 per operable parallel logic pair 2 per operable parallel logic pair 2 per operable trip system 2 per operable trip system 2 per operable trip system I per operable trip system 2 per operable trip system 2 per trip system logic I in an operable low pressure pump cooling path 2 per trip system 2 per trip system 2 per trip system I per trip system 2 per trip system 2 per trip system logic I in an operable tow pressure pump cooling path 2/3 month 2/3 month 2/3 month 2/3 month NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA 2/3 month 2/3 month 2/3 month 2/3 month NA NA I'/ months IR months I'/ months IR months IR months 3 months 3 months 3 months 3 months 3 months 3 months 3 months 3 months 3 months 3 months 3 months "Either the HPCIS tnp system or the ADS trip system may be inoperable for the allowable repair time Condition I: the inoperable parallel logic pair is tripped.
Condition I: the inoperable channel is tripped.
Condition I the Inoperable channel Is tripped "Conctition I Ag trip systems, logics, and channels operabla.
Condition II One LPCI and CSS tnp system inoperabla.
Condition III Minimum required operable channels with ag trip systems operable.
NOTES a.
The nuclear system pressure shall be reduced to 122 psig.
b.
The nuclear system shall be placed in the cold shutdown condition.
For inoperable HPCIS parallel logic pairs, Note Ia( must be observed. For inoperable LPCIS and CSS paragel logic pairs, Note (bt must be observed.
d.
Tested when other equipment is tested; no spemfic test I'equlratt.
7.4.27/7/428