ML091250275: Difference between revisions
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{{#Wiki_filter:TECHNICAL SPECIFICATIONS | {{#Wiki_filter:TECHNICAL SPECIFICATIONS 2.0 LIMITING CONDITIONS FOR OPERATION 2.1 Reactor Coolant System (Continued) 2.1.2 Heatup and Cooldown Rate Applicability Applies to the temperature change rates and pressure of the Reactor Coolant System (RCS). | ||
CONDITIONS FOR OPERATION | |||
Coolant System (Continued) 2.1.2 Heatup and Cooldown Rate Applicability Applies to the temperature change rates and pressure of the Reactor Coolant System (RCS). | |||
Objective To specify limiting conditions of the reactor coolant system heatup and cooldown rates. | Objective To specify limiting conditions of the reactor coolant system heatup and cooldown rates. | ||
Specification The combination of RCS pressure, RCS temperature, and RCS heatup and cooldown rates shall be maintained within the limits specified in the PTLR and as designated below: | Specification The combination of RCS pressure, RCS temperature, and RCS heatup and cooldown rates shall be maintained within the limits specified in the PTLR and as designated below: | ||
: a. Allowable combinations of pressure and temperature (T c) for a specific heatup rate shall be below and to the right of the applicable limit lines as shown on the pressure and temperature (P-T) limit Figure(s) in the PTLR. | : a. Allowable combinations of pressure and temperature (T c) for a specific heatup rate shall be below and to the right of the applicable limit lines as shown on the pressure and temperature (P-T) limit Figure(s) in the PTLR. | ||
: b. Allowable combinations of pressure and temperature (T c) for a specific cooldown rate shall be below and to the right of the applicable limit lines as shown on the P-T limit Figure(s) in the PTLR. | : b. Allowable combinations of pressure and temperature (T c) for a specific cooldown rate shall be below and to the right of the applicable limit lines as shown on the P-T limit Figure(s) in the PTLR. | ||
: c. The heatup rate of the pressurizer shall not exceed 100°F in any one hour period. | : c. The heatup rate of the pressurizer shall not exceed 100°F in any one hour period. | ||
: d. The cooldown rate of the pressurizer shall not exceed 200°F in any one hour period. | : d. The cooldown rate of the pressurizer shall not exceed 200°F in any one hour period. | ||
Required Actions (1) When any of the above limits are exceeded, the following corrective actions shall be taken: | Required Actions (1) When any of the above limits are exceeded, the following corrective actions shall be taken: | ||
: 1. Immediately initiate action to restore the temperature or pressure to within the limit. | : 1. Immediately initiate action to restore the temperature or pressure to within the limit. | ||
: 2. Perform an analysis to determine the effects of the out of limit condition on the fracture toughness properties of the reactor coolant system. | : 2. Perform an analysis to determine the effects of the out of limit condition on the fracture toughness properties of the reactor coolant system. | ||
: 3. Determine that the reactor coolant system remains acceptable for continued operation or be in cold shutdown within 36 hours. | : 3. Determine that the reactor coolant system remains acceptable for continued operation or be in cold shutdown within 36 hours. | ||
(2) Before the radiation exposure of the reactor vessel exceeds the exposure for which they apply, the P-T limit Figure(s) shown in the PTLR shall be updated in accordance with the following criteria and procedures: | |||
2.1 - Page 8 Amendment No. 22,74,161, 207,221}} | 2.1 - Page 8 Amendment No. 22,74,161, 207,221}} |
Revision as of 00:24, 12 July 2019
ML091250275 | |
Person / Time | |
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Site: | Fort Calhoun ![]() |
Issue date: | 05/05/2009 |
From: | Omaha Public Power District |
To: | Office of Nuclear Reactor Regulation |
Wilkins, L E, NRR/DORL/LPL4, 415-1377 | |
Shared Package | |
ML091250264 | List: |
References | |
TAC MD9186 | |
Download: ML091250275 (1) | |
Text
TECHNICAL SPECIFICATIONS 2.0 LIMITING CONDITIONS FOR OPERATION 2.1 Reactor Coolant System (Continued) 2.1.2 Heatup and Cooldown Rate Applicability Applies to the temperature change rates and pressure of the Reactor Coolant System (RCS).
Objective To specify limiting conditions of the reactor coolant system heatup and cooldown rates.
Specification The combination of RCS pressure, RCS temperature, and RCS heatup and cooldown rates shall be maintained within the limits specified in the PTLR and as designated below:
- a. Allowable combinations of pressure and temperature (T c) for a specific heatup rate shall be below and to the right of the applicable limit lines as shown on the pressure and temperature (P-T) limit Figure(s) in the PTLR.
- b. Allowable combinations of pressure and temperature (T c) for a specific cooldown rate shall be below and to the right of the applicable limit lines as shown on the P-T limit Figure(s) in the PTLR.
- c. The heatup rate of the pressurizer shall not exceed 100°F in any one hour period.
- d. The cooldown rate of the pressurizer shall not exceed 200°F in any one hour period.
Required Actions (1) When any of the above limits are exceeded, the following corrective actions shall be taken:
- 1. Immediately initiate action to restore the temperature or pressure to within the limit.
- 2. Perform an analysis to determine the effects of the out of limit condition on the fracture toughness properties of the reactor coolant system.
- 3. Determine that the reactor coolant system remains acceptable for continued operation or be in cold shutdown within 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />.
(2) Before the radiation exposure of the reactor vessel exceeds the exposure for which they apply, the P-T limit Figure(s) shown in the PTLR shall be updated in accordance with the following criteria and procedures:
2.1 - Page 8 Amendment No. 22,74,161, 207,221