1 hour Tech Specs - .5 Flashcards
Control rod applicability OpCon1&2
All control rods shall be OPERABLE.
-With one control rod inoperable due to being immovable, as a result of excessive
friction or mechanical interference, or known to be untrippable:
1. Immediately:
a) Verify that the inoperable control rod, if withdrawn, meets the
stuck control rod separation criteria.
Otherwise, be in at least HOT SHUTDOWN within the next 12 hours.
The SHUTDOWN MARGIN shall be equal to or greater than:
a. 0.38% delta k/k with the highest worth rod analytically determined,
or
b. 0.28% delta k/k with the highest worth rod determined by test.
With the SHUTDOWN MARGIN less than specified:
b. In OPERATIONAL CONDITION 3 or 4, immediately verify all insertable
control rods to be inserted and suspend all activities that could
reduce the SHUTDOWN MARGIN. In OPERATIONAL CONDITION 4, establish
SECONDARY CONTAINMENT INTEGRITY within 8 hours.
c. In OPERATIONAL CONDITION 5, suspend CORE ALTERATIONS and other
activities that could reduce the SHUTDOWN MARGIN and insert all
insertable control rods within 1 hour. Establish SECONDARY CONTAINMENT
INTEGRITY within 8 hours.
Control Rod Scram Accumulators, TS 3.1.3.5.-OpCon 1 or 2
- With two or more control rod scram accumulators inoperable and reactor pressure ~ 900 psig,
a) Within 20 minutes of discovery of this condition concurrent with charging water pressure < 940 psig, restore charging water header pressure to ~940 psig otherwise place the mode switch in the shutdown position,
and
b) Within one hour, declare the associated control rod scram time “slow”*,
or
c) Within one hour insert the associated control rods, declare the associated control rods inoperable and disarm the associated control valves by closing the drive water and exhaust water isolation valves.
Otherwise, be in at least HOT SHUTDOWN within the next 12 hours.
Safety Limits - Reactor Vessel Water Level
2.1.4 - OpCon 3, 4, 5
Rx water level ≤ top of active fuel, manually initiate ECCS to restore water level, after depressurizing the Rx vessel is required
Control Rod Position Indication, TS 3.1.3.7-OpCon 1 or 2
In OPERATIONAL CONDITION 1 or 2 with one or more control rod position
indicators inoperable, within 1 hour:
- Determine the position of the control rod by using an alternative method, or:
a) Moving the control rod, by single notch movement, to a
position with an OPERABLE position indicator,
b) Returning the control rod, by single notch movement, to its
original position, and
c) Verifying no control rod drift alarm at least once per 12 hours, or - Move the control rod to a position with an OPERABLE position indicator, or
- When THERMAL POWER is:
a) Within the preset power level of the RWM, declare the control rod inoperable.
b) Greater than the preset power level of the RWM, declare the
control rod inoperable, insert the control rod and disarm the
associated directional control valves** either:
1) Electrically, or
2) Hydraulically by closing the drive water and exhaust
water isolation valves.
Otherwise, be in at least HOT SHUTDOWN within the next 12 hours.
Rod Block Monitor, TS 3.1.4.3.a - OpCon 1 Thermal Power ≥ 30% RTP
A. With one RBM channel inoperable:
1. Verify that the reactor is not operating on a LIMITING CONTROL ROD PATTERN, and
2. Restore the inoperable RBM channel to OPERABLE status within 24 hours.
Otherwise, place the inoperable rod block monitor channel in the tripped condition within the next hour.
B. With both RBM channels inoperable, place at least one inoperable rod block monitor channel in the tripped condition within one hour.
Average Planar Linear Heat Generation Rate, TS 3.2.1- OpCon 1 Thermal Power ≥ 24% RTP
With an APLHGR exceeding the limits specified in the CORE OPERATING LIMITS REPORT, initiate corrective action within 15 minutes and restore APLHGR to within the required limits within 2 hours or reduce THERMAL POWER to less than 24% of RATED THERMAL POWER
within the next 4 hours.
Minimum Critical Power Ratio, TS 3.2.3- OpCon 1 Thermal Power ≥ 24% RTP
A. With the end-of-cycle recirculation pump trip system inoperable per Specification 3.3.4.2, operation may continue provided that, within 1 hour, MCPR is determined to be greater than or equal to the EOC-RPT inoperable limit specified in the CORE OPERATING LIMITS REPORT.
B. With MCPR less than the applicable MCPR limit specified in the CORE OPERATING LIMITS REPORT, initiate corrective action within 15 minutes and
restore MCPR to within the required limit within 2 hours or reduce THERMAL POWER to less than 24% of RATED THERMAL POWER within the next 4 hours.
Linear Heat Generation Rate, TS 3.2.4- OpCon 1 Thermal Power ≥ 24% RTP
With the LHGR of any fuel rod exceeding the limit specified in the CORE OPERATING LIMITS REPORT, initiate corrective action within 15 minutes and restore the LHGR to within the limit within 2 hours or reduce THERMAL POWER to less than 24% of RATED THERMAL POWER within the next 4 hours.
Isolation Actuation Instrumentation, TS 3.3.2.c – Per table 3.3.2-1
With the number of OPERABLE channels less than required by the minimum OPERABLE channels per trip system requirement for both trip systems,
1) place the inoperable channel(s) in one trip system within one hour, and….
2) place the inoperable channel(s) in both trip system within one hour, and….
ATWS Recirculation Pump Trip System Instrumentation, TS 3.3.4.1 - OpCon 1
With the number of OPERABLE channels one less than required by the Minimum OPERABLE Channels per Trip System requirement for one or both trip systems, place
the inoperable channel(s) in the tripped condition within one hour.
ATWS Recirculation Pump Trip System Instrumentation, TS 3.3.4.1 - OpCon 1
With the number of OPERABLE channels one less than required by the Minimum OPERABLE Channels per Trip System requirement for one or both trip systems, place
the inoperable channel(s) in the tripped condition within one hour.
