ML20155J240
| ML20155J240 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 05/08/1986 |
| From: | COMMONWEALTH EDISON CO. |
| To: | |
| Shared Package | |
| ML20155J239 | List: |
| References | |
| NUDOCS 8605230054 | |
| Download: ML20155J240 (2) | |
Text
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INSTRUMENTATION 7
/
TRAVERSING IN-CORE PROBE SYSTEM LIMITING CONDITION FOR OPERATION 3.3.7.7.
The traversing in-core probe system shall be OPERABLE with:
a.
Five movable detectors, drives and readout equipment to map the core, and b.
Indexing equipment to allow all five detectors to be calibrated in a common location.
j APPLICABILITY: When the traversing in-core probe is used for:
l a.
Recalibration of the LPRM detectors, and
- b.
Monitoring the APLHGR, LHGR, MCPR, or MFLPD.
ACTION:
With the traversing in-core probe system inoperable, suspend use of the system for the above applicable monitoring or calibration functions. The provisions of Specificatiors 3.0.3 and 3.0.4 are not applicable.
SURVEILLANCE REQUIREMENTS 4.3.7.7 The traversing in-core probe system shall be demonstrated OPERABLE by normalizing each of the above required detector outputs within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> prior to use for the above applicable monitoring or calibration functions.
- 0nly the detector (s) in the required measurement location (s) are required to be OPERABLE.
Otherwise; with four traversing in-core probe machines, an inaccessible LPRM string may be calibrated using a trave'esing in-core probe scan from a symetric string provided that an ' A' type control rod pattern is in use and that the total core TIP asymetry is less than 67. (standard deviation).
l 8605230054~B60508 DR ADOCK O 34 LA SALLE - UNIT 2 3/4 3-73
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3/4.3.7.7 TRAVERSING IN-CORE PROBE SYSTEM The OPERABILITY of the traversing in core probe system with the specified minimum complement of equipment ensures that the measurements obtained from use of this equipment accurately represent the spatial neutron flux distribu-tion of the reactor care.
3/4.3.7.8 CHLORINE AND AMh0NIA DETECTION SYSTEM The OPERABILITY of the chlorine and ammonia detection system ensures that an accidental chlorine and/or ammonia release will'be detected promptly and the necessary protective actions will be automatically initiated to provide protec-tion for control room personnel.
Upon detection of a high concentration of chlorine and/or ammonia, the control room emergency ventilation system will automatically be placed in the recirculation made of operation to provide the required protection.
The detection systems required by this specification are consistent with the recommendations of Regulatory Guide 1.95 " Protection of Nuclear Power Plant Control Room Operators against an Accidental Chlorine Release", Fet,ruary 1975.
3/4.3.7.9 FIRE DETECTION INSTRUMENTATION OPERABILITY of the fire detection instrumentation ensures that adequate warning capability is available for the prompt detection of fires.
This capability is required in order to' detect and locate fires in their early stages.
Prompt detection of fires will reduce the potential for damage to safety-related equipment and is an integral element in the overall facility fire protection program.
LA SALLE - UNIT 2 B 3/4 3-5
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