Tech Specs Flashcards
What is TS Section 2.0?
Safety Limits?
What is the purpose of TS Section 2.0?
Ensure that acceptable fuel design limits are not exceeded by maintaining
Fuel Cladding Integrity, (Cladding)
MCPR, (Power Ratio)
Reactor Water Level above top of active fuel, AND (Level)
ensure RCS boundary does not exceed allowables (Pressure)
What needs to be done if Safety Limits are violate?
Restore Compliance or Insert all Rods within 2 Hours
Why are SDM requirements specified?
TO ensure reactor can be made subcritical from all operating conditions and transients, and to ensure reactor can be maintained sufficiently subcritical
When is SDM requirements applicable?
Modes 1, 2, 3, 4, & 5
What are the limits associated with SDM?
> =0.38%dk/k with highest rod worth determined analytically OR
= 0.28% dk/k with highest rod work determined by testing
What are the required actions associated with SDM in Modes 1 & 2?
Restore SDM within 6 hours or be in Mode 3 within 12 hours
What are the required actions for SDM in Mode 3?
If SDM not met, Initiate action to insert all rods IMMEDIATELY?
What are the required actions for SDM in MODE 4?
Initiate action to fully insert all Rods IMMEDIATELY; AND
Restore Secondary Containment to Operable WITHIN 1 hour; AND
Restor SBGT to Operabel WITHIN 1 HOUR; AND;
Restore isolation capability in unisolated sec. cont. penetrations WITHIN 1 HOUR.
What actions are required for SDM in MODE 5?
Suspend core alterations except CR insertion and fuel removal IMMEDIATELY; AND
Insert all control rods in cells containing 1 or more fuel assemblies IMMEDIATELY; AND
Restore Sec. Cont, SBGT, and Penetration isolation within 1 HOUR
What is the limit for Reactivity Anomalies and when is it applicable?
Difference between monitored and predicted Keff +/- 1%dk/k in MODES 1 and 2
What are the requirements for Control Rod Operability?
Position may be determined;
Capable of being inserted;
Capable of being inserted 90% within 7 seconds;
Do not overtravel OUT
When are Control Rods Required to be Operable?
Modes 1 and 2
What is a stuck control rod?
A rod that will not INSERT
What is required for a Stuck Rod?
Verify Stuck rod separation criteria is met immediately;
Disarm associated CRD with 2 HOURS;
Perform Rod Insertion Test (SR 3.1.3.3) within 24 hours for each withdrawn operable rod; AND
Verify SDM
What are the stuck rod separation criteria?
Stuck CR must not be:
a) adjacent to 2 slow CRs
b) if adjacent to 1 slow CR, that CR cannot be adjacent to another Slow CR
c) adjacent to a slow CR when there is another PAIR of slow CRs elsewhere
What is the limit for number of withdrawn stuck CRs at any time (meeting CR stuck separation criteria)? what must be done if not met?
1; Mode 3 in 12 hours
What is the limit for number of inoperable control rods?
If nine or more, be in Mode 3 in 12 hours
In General: What must be done to an inoperable CR that is not stuck?
Fully insert and disarm CRD; OR restore operable status
What is the limitation for Slow CRs?
No more than 12 Operable slow CRs;
and no more than 2 operable slow CR’s shall be adjacent
When are CR Scram Times applicable?
Modes 1 and 2
What must be done if limitations for slow CR’s is not met?
MODE 3 in 12 hours.
What are the required Scram times for CRs and what is the applicable pressure?
5% insert - 0.48sec 20% insert - 0.89sec 50% insert - 1.98sect 90% insert - 3.44sec. IF CANNOT BE MET, it is SLOW - UNLESS IF CANNOT BE AT 90% in 7sec, IS INOPERABLE AT 800psig
When are CR Accumulators required to Operable?
MODES 1 and 2