ML030870347

Technical Specifications Section 2, Safety Limits and Limiting Safety System Settings

ML030870347
Person / Time
Site:	Davis Besse
Issue date:	02/05/2003
From:	- No Known Affiliation
To:	Office of Nuclear Reactor Regulation
References
FOIA/PA-2003-0018
Download: ML030870347 (2)

Text

2.0 SAFETY LIMITS AND LIMITING SAFETY SYSTEM SETTINGS 2.1 SAFETY LIMITS REACTOR CORE 2.1.1 The combination of the reactor coolant core outlet pressure and outlet temperature shall not exceed the safety limit shown in Figure 2.1-1.

APPLICABILITY: MODES 1 and 2.

ACTION:

Whenever the point defined by the combination of reactor coolant core outlet pressure and outlet temperature has exceeded the safety limit, be in HOT STANDBY within one hour.

REACTOR CORE 2.1.2 The combination of reactor THERMAL POWER and AXIAL POWER IMBALANCE shall not exceed the protective limit shown in the CORE OPERATING LIMITS REPORT for the various combinations of three and four reactor coolant pump operation.

I APPLICABILITY: MODE 1.

ACTION:

Whenever the point defined by the combination of Reactor Coolant System flow, AXIAL POWER IMBALANCE and THERMAL POWER has exceeded the appropriate protective limit, be in HOT STANDBY within one hour, and comply with the requirements of Specification 6.7.2. I REACTOR COOLANT SYSTEM PRESSURE 2.1.3 The Reactor Coolant System pressure shall not exceed 2750 psig.

APPLICABILITY: MODES 1, 2, 3, 4 and 5. ( I"J T"." I-r-L ACTION:

MODES I and 2 - Whenever the Reactor Coolant System pressure has exceeded 2750 psig, be in HOT STANDBY with the Reactor Coolant System pressure within its limit within one hour.

MODES 3, 4 - Whenever the Reactor Coolant System pressure has exceeded and 5 2750 psig, reduce the Reactor Coolant System pressure to within its limit within 5 minutes.

2-1 Amendment No.189 DAVIS-BESSE, UNIT I

REACTOR COOLANT SYSTEM SAFETY VALVES AND PILOT OPERATED RELIEF VALVE - OPERATING LIMITING CONDITION FOR OPERATION 3.4.3 All pressurizer code safety valves shall be OPERABLE with a lift setting of < 2525 psig.* When not isolated, the pressurizer pilot operated relief valve shall have a trip setpoint of k 2435 psig and an allowable value of >2435 psig.**

APPLICABILITY: MODES 1, 2 and 3.

ACTION:

With one pressurizer code safety valve inoperable, either restore the inoperable valve to OPERABLE status within 15 minutes or be in HOT SHUTDOWN within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

SURVEILLANCE REQUIREMENTS 4.4.3 For the pressurizer code safety valves, there are no additional Surveillance Requirements other than those required by Specification 4.0.5.

For the pressurizer pilot operated relief valve a CHANNEL CALIBRATION check shall be performed each REFUELING INTERVAL. I

• The lift setting pressure shall correspond to ambient conditions of the valve at nominal operating temperature and pressure.

• • Allowable value for CHANNEL CALIBRATION check.

DAVIS-BESSE, UNIT 1 3/4 4-4 Amendment No. .33,40,128, 218