ML20211C170

Proposed Tech Specs Revising ESAS Low RCS Pressure Setpoint to Ensure That TS Adequately Bounds Safety Analysis

ML20211C170
Person / Time
Site:	Arkansas Nuclear
Issue date:	08/18/1999
From:	ENTERGY OPERATIONS, INC.
To:
Shared Package
ML20211C164	List: 1CAN089903, Application for Amend to License DPR-51,revising ESAS Low RCS Pressure Setpoint,To Ensure That TS Adequately Bounds Safety Analysis ML20211C170
References
NUDOCS 9908250169
Download: ML20211C170 (6)

Text

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, \ t PROPOSED ANO-1 TECHNICAL SPECIFICATION CHANGES 9908250169 990818 PDR ADOCK 05000313 P PDR

3.5.3 Safety Features Actuation System Setpointa Applicability l

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. '

l Specification The safety features actuation setpoints and permissible bypasses shall be as follows:

Functional Unit Action Setpoint High Reactor Building Reactor Building Spray $30 psig (44.7 psia)

Pressure

• High Pressure Injection 5 4 psig (18.7 psia)

Start of Reactor Building s 4 psig (18.7 psia)

Cooling and Reactor Building Isolation Reactor Bldg. Ventilation s 4 psig (18.7 psia)

Lcw Pressure Injection s 4 psig (18.7 psia)

Penetration Room Ventilation s 4 psig (18.7) psia)

Low Reactor Coolant High Pressure Injection 2 1585 psig l System Pressure ** l Start of Reactor Building Cooling and Reactor Building Isolation 2 1505 psig l

• May be bypassed during reactor building leak rate test.

• • May be bypassed below 1750 psig and is automatically reinstated above 1750 psig.

With the safety features actuation setpoints less conservative than the above values, declare the channel inoperable and apply the applicable Action requirements of Table 3.5.1-1 until the channel is restored to OPERABLE status with the trip setpoint adjusted consistent with the trip setpoint value.

1 Amendment No. 49,6-7,MB 49 l

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l Bases

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'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 1585 psig low reactor coolant pressure setpoint for high l 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)

REFERENCES (1) FSAR, Section 14.2.2.5 l f

(2) B&W Calculation 32-1158581

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Amendment No. 49,14e 50

e g 6 g I 6 MARKUP OF CURRENT ANO-1 TECHNICAL SPECIFICATIONS (FOR INFO ONLY)

3.5.3 Safety Features Actuation System Setpoints Applicability

• Yhis' 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 Building Reactor Building Spray s30 psig (44.7 psia)

Pressure

• High Pressure Injection s 4 psig (18.7 psia)

Start of Reactor Building s 4 psig (18.7 psia)

Cooling and Reactor Building Isolation Reactor Bldg. Ventilation s 4 psig (18.7 psia)

Low Pressure Injection s 4 psig (18.7 psia) l Penetration Room Ventilation s 4 psig (18.7) psia) I Low Reactor Coolant High Pressure Injection 2 1526-1585,psig l System Pressure **

Low Pressure Injection 2 1526-1585 psig l Start of Reactor Building ,

Cooling and Reactor l Building Isolation 2 1526-1}p5,psig l !

• May be bypassed during reactor building leak rate test.

l

• • May be bypassed below 1750 psig and is automatically reinstated above 1750 psig.

With the safety features actuation setpoints less conservative than the above values, declare the channel inoperable and apply the applicable Action requirements of Table 3.5.1-1 until the channel is restored to OPERABLE status with the trip setpoint adjusted consistent with the trip setpoint value.

Amendment No. 49,67,MB 49

1 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 1526-1585,psig low reactor coolant pressure setpoint for high l 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)

REFERENCES (1) FSAR, Section 14.2.2.5 (2) B&W Calculation 32-1158581 Amendment No. 49,+0B 50 1