ML19260D970
| ML19260D970 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 02/04/1980 |
| From: | ARKANSAS POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML19260D968 | List: |
| References | |
| RTR-NUREG-0578, RTR-NUREG-578 NUDOCS 8002120683 | |
| Download: ML19260D970 (2) | |
Text
3.5.3 Safety Features Actuation System Setpoints Applicability This specification applies to the safety features actuation system actuation setpoints.
Objective To provide for automatic initiation of the safety features actuation system in the event of a breach of reactor coolant system integrity.
Specification The safety features actuation setpoints and permissible bypasses shall be as follows:
Functional Unit Action Setpoint High Reactor Build-Reactor Building Spray
< 30 psig (44.7 psia) ing Pressure
- High Pressure Injection j 4 psig (18.7 psia)
Start of Reactor Building j 4 psig (18.7 psia)
Cooling and Reactor Build-ing Isolation Reactor Bldg. Ventilation j 4 psig (18.7 psia)
Low Pressure Injection j 4 psig (18.7 psia)
Penetration Room Ventila-4 psig (18.7 psia) tion Low Reactor Coolant High Pressure Injection 3 1500 psig System Pressure **
Low Pressure Injection 3 1500 psig Start of Reactor Building
-> 1500 psig Cooling and Reactor 3uild-ing Isolation
- May be bypassed during reactor building leak rate test.
- May be bypassed below 1750 psig and is automatically reinstated above 1750 psig.
1951 322 8002120 6 O 49 i
Bases High Reactor Building Pressure The basis for the 30 psig and 4 psig setpoints for the high pressure signal is to establish a setting which would be reached in adequate time in the event of a DBA, cover a spectrum of break sizes and yet be far enough above normal operation maximum internal pressure to prevent spurious initiation.
Low Reactor Coolant System Pressure The basis for the 1500 psig low reactor coolant pressure setpoint fo: high and low pressure injection initiation is to establish a value which is high enough such that protection is provided for the entire spectrum of break sizes and is far enough below normal operating pressure to prevent spurious initiation. (1)
REFERENCE (1)
FSAR, Section 14.2.2.5 1951 323 50