ML070730043
| ML070730043 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 03/26/2007 |
| From: | Thadani M NRC/NRR/ADRO/DORL/LPLIV |
| To: | Blevins M TXU Power |
| Thadani, M C, NRR/DORL/LP4, 415-1476 | |
| Shared Package | |
| ML070730033 | List: |
| References | |
| TAC MD4464, TAC MD4465 | |
| Download: ML070730043 (5) | |
Text
CREFS 3.7.10 3.7 PLANT SYSTEMS 3.7.10 Control Room Emergency Filtration/Pressurization System (CREFS)
LCO 3.7.10 Two CREFS trains shall be OPERABLE
-NOTE-...
The Control Room envelope (CRE) boundary may be opened I intermittently under administrative controls.
APPLICABILITY: MODES 1, 2, 3, 4, 5, and 6, During movement of irradiated fuel assemblies ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. One CREFS train A.1 Restore CREFS train to 7 days inoperable for reasons OPERABLE status.
other than Condition B.
B. One or more CREFS Trains B.1 Initiate action to Immediately inoperable due to implement mitigating inoperable CRE boundary actions.
in MODES 1,2. 3, and 4.
AND B.2 Verify mitigating actions 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> to ensure CRE occupant exposures to radiological, chemical, and smoke hazards will not exceed limits.
AND B.3 Restore CRE boundary to 90 days OPERABLE status.
C. Required Action and C.1 Be in MODE 3. 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> associated Completion.
Time of Condition A or B AND not met in MODE 1, 2, 3, or 4. C.2 Be in MODE 5. 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> (continued)
COMANCHE PEAK - UNITS 1 AND 2 3.7-23 Amendment No. 66,408,420. 136
CREFS 3.7.10 ACTIONS (continued)
CONDITION REQUIRED ACTION COMPLETION TIME D. Required Action and D.1 Place OPERABLE Immediately associated Completion CREFS train in Time of Condition A not emergency recirculation met in MODE 5 or 6, or mode.
during movement of irradiated fuel assemblies. OR D.2.1 Suspend CORE Immediately ALTERATIONS.
AND D.2.2 Suspend movement of Immediately Irradiated fuel assemblies.
E. Two CREFS trains E.1 Suspend CORE Immediately Inoperable In MODE 5 or 6, ALTERATIONS.
or during movement of irradiated fuel assemblies. AND OR E.2 Suspend movement of Immediately irradiated fuel One or more CREFS trains assemblies.
inoperable due to an Inoperable CRE boundary In MODE 5 or 6, or during movement of Irradiated fuel assemblies.
F. Two CREFS trains F.1 Enter LCO 3.0.3. Immediately inoperable in MODE 1, 2, 3, or 4 for reasons other than Condition B.
COMANCHE PEAK - UNITS 1 AND 2 3.'7-24 Amendment No. 64,4N, 420,136
CREFS 3.7.10 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.7.10.1 Operate each CREFS trains Emergency Pressurization 31 days Unit for 2: 10 continuous hours with the heaters operating and Emergency Filtration Unit a 15 minutes.
SR 3.7.10.2 Perform required CREFS testing in accordance with the In accordance with Ventilation Filter Testing Program (VFTP). the VFTP I SR 3.7.10.3 Verify each CREFS train actuates on an actual or 18 months simulated actuation signal.
SR 3.7.10.4 Perform required CRE unfiltered air inleakage testing in In accordance with accordance with the Control Room Envelope Habitability the Control Room Program. Envelope Habitability Program COMANCHE PEAK - UNITS 1 AND 2 3.7-25 Amendment No. 64, 136
Programs and Manuals 5.5 5.5 Programs and Manuals (continued) 5.5.19 Battery Monitoring and Maintenance Progqram This Program provides for restoration and maintenance, based on the recommendations of IEEE Standard 450, "IEEE Recommended Practice for Maintenance, Testing, and Replacement of Vented Lead-Acid Batteries for Stationary Applications," or of the battery manufacturer for the following:
- a. Actions to restore battery cells with float voltage < 2.13 V, and
- b. Actions to equalize and test battery cells that had been discovered with electrolyte level below the top of the plates.
5.5.20 Control Room Enveloge Habitability Program A Control Room Envelope (CRE) Habitability Program shall be established and implemented to ensure that CRE habitability is maintained such that, with an OPERABLE Control Room Emergency Filtration Systetn (CREFS), CRE occupants can control the reactor safely under normal conditions and maintain it in a safe condition following a radiological event, hazardous chemical release, or a smoke challenge. The program shall ensure that adequate radiation protection is provided to permit access and occupancy of the CRE under design basis accident (DBA) conditions without personnel receiving radiation exposures In excess of 5 rem whole body or its equivalent to any part of the body for the duration of the accident. The program shall Include the following elements:
- b. Requirements for maintaining the CRE boundary In its design condition Including configuration control and preventive maintenance.
- c. Requirements for (I)determining the unfiltered air inleakage past the CRE boundary into the CRE in accordance with the testing methods and at the Frequencies specified In Sections C.1 and C.2 of Regulatory Guide 1.197, "Demonstrating Control Room Envelope Integrity at Nuclear Power Reactors," Revision 0, May 2003, and (ii) assessing CRE habitability at the Frequencies specified in Sections C.A and C.2 of Regulatory Guide 1.197, Revision 0.
The following are exceptions to Sections C.1 and C.2 of Regulatory Guide 1.197, Revision 0:
- 1. C. -Section 4.3.2 "Periodic CRH Assessment" from NEI 99-03 Revision I will be used as Input to a site specific Self Assessment procedure.
(continued)
COMANCHE PEAK - UNITS 1 AND 2 5.0-28a Amendment No. 1, 136
Programs and Manuals 5.5 5.5 Programs and Manuals 5.5.20 Control Room Envelope Habitability Procgram (continued)
- 2. C.1.2 - No peer reviews are required to be performed.
- d. Measurement, at designated locations, of the CRE pressure relative to all external areas adjacent to the CRE boundary during the pressurization mode of operation by one train of the CREFS, operating at the flow rate required by the VFTP, at a Frequency of 18 months on a STAGGERED TEST BASIS. The results shall be trended and used as part of the 18 month assessment of the CRE boundary.
- e. The quantitative limits on unfiltered air inleakage into the CRE. These limits shall be stated in a manner to allow direct comparison to the unfiltered air inleakage measured by the testing described In paragraph c.
The unfiltered air inleakage limit for radiological challenges is the inleakage flow rate assumed in the licensing basis analyses of DBA consequences. Unfiltered air Inleakage limits for hazardous chemicals must ensure that exposure of CRE occupants to these hazards will be within the assumptions in the licensing basis.
- f. -The provisions of SR 3.0.2 are applicable to the Frequencies for assessing CRE haliltability, determining CRE unfiltered Inleakage, and measuring CRE pressure and assessing the CRE boundary as required by paragraphs c and d, respectively.
COMANCHE PEAK - UNITS I AND 2 5.0-28b Amendment No. 136