ML19211A105
| ML19211A105 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 03/15/1979 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML19211A098 | List: |
| References | |
| NUDOCS 7912170037 | |
| Download: ML19211A105 (1) | |
Text
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REACTIVITY CLNTROL SYSTEMS POSITION INDICATION SYSTEMS-OPERATING LIMITING CONDITION FOR OPERATION 3.1.3.2 The shutdown, control and part length control rod position indication system and the demand position indication system shall be OPERABLE and capable of determining the control rod positions within 212 steps.
APPLICABILITY:
MODES 1 and 2.
ACTION:
a.
With ~a maximum of one rod position indicator per bank inoperable either:
1.
Determine the position of the non-indicating rod (s) indirectly by the movable incere detectors at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> and immediately after any motion of the non-indicating rod which exceeds 24 steps in one direction since the last determination of the rod's position, or 2.
' Reduce THERMAL POWER TO less than 50% of RATED THERMAL POWER within 8 nours.
b.
With a maximum of one demand position indicator per bank inoperable either:
1.
Verify that all rod position indicators for the affected bank are OPERABLE and that the most withdrawn rod and the laast withdrawn rod of the bank are within a maximum of 12 steps of each other at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, or 2.
Reduce THERMAL POWER to less tnan 50% of RATED THERMAL POWER within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.
SURVEILLANCE REOUIREMENTS 4.1.3.2 Each rod position indicator shall be determined to be OPERABLE by
. verifying that the demand position indication system and the rod position indication system agree within 12 steps at least once per 12 nours except during time intervais when the Rod Position Deviation Monitor is inoperacle, theri compare the cemand position indication system and the rod position indica-tion system a. least onca per 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.
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