ML20058A110
| ML20058A110 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 11/15/1993 |
| From: | TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | |
| Shared Package | |
| ML20058A065 | List: |
| References | |
| NUDOCS 9311300108 | |
| Download: ML20058A110 (1) | |
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_. to TXX-93244 Page 1,0f 1
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POWER DISTRIBUTION LIMITS 3/4.2.5 DNB PARAMETERS LIMITING CONDITION FOR OPERATION i
3.2.5 The following DNB-relateo parameters shall be maintained within the stated limits:
Indicated Reactor Coolant System T,y 5 5927 a.
b.
Indicated Pressurizer Pressure 2 2207 psig* for Unit 1 2 2219 psig* for Unit 2 Indicated Reactor Coolant System (RCS) Flow 2 389,700 gpm** for Unit 1 m
c.
2 395,200 gpm** for Unit 2 APPLICABILITY:
MODE 1.
ACTION:
With any of the above parameters exceeding its limit, restore the parameter to within its limit within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or reduce THERMAL POWER to less than 5% of RATED THERMAL POWER within the next 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.
lyRVEILLANCE REQUIREMENTS
, 4.2.5.1 Each of the above parameters shall be verified to be within its limits at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.
4.2.5.2 The RCS +otal flow rate shall be verified to be within its limits at least once per 31 days by plant computer indication or measurement of the RCS elbow tap differential pressure transmitters' output voltage.
4.2.5.3 The RCS loop flow rate indicators shall be subjected to a CHANNEL CALIBRATION at least once per 18 months.
The channels shall be normalized based on the RCS flow rate detennination of Surveillance Requirement 4.2.5.4.
4.2.5.4 The RCS total flow rate shall be determined by precisio t balance measurement after each fuel loading and prior to operation above of RATED THERMAL POWER.
The feedwater pressure and temperature, the main steam pres-sure, and feedwater flow differential pressure instruments shall be calibrated within 90 days of performing the calorimetric flow measurement.
- Limit not applicable during either a THERMAL POWER ramp in excess of 5% of RATED THERMAL POWER per minute or a THERMAL POWER step in excess of 10% of RATED THERMAL POWER.
- Includes a 1.8% flow measurement uncertainty.
COMANCHE PEAK - UNITS 1 AND 2 3/4 2-12 Unit 1 - Amendment No. 14 9311300108 931115 PDR ADDCK 05000445 P
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