NOPS Study Guide Questions Flashcards
What parameters are programmed into the DEHC panel during steady state operations near a power limit or restriction and why?
A 5 MW ramp down at 5 mw/min should be pre-programmed into DEHC as a contingency for a fast-moving reactivity event with the potential to overpower the reactor
When manually withdrawing control rods in a critical reactor, how many steps can the operator pull rods without stopping and why? When can these requirements be relaxed?
The reactor operator at the controls shall stop at least every 3 steps in order to check for expected response on nuclear instruments, rod position and RCS Tave indication. The Shift Manager/Unit Supervisor may suspend the three-step pull-and-wait when the reactivity computer is in service during the performance of physics testing or during a reactor start-up when reactor power is below the point of adding heat.
Why do we control delta I?
To limit axial power distribution skewing, thus ensuring peaking factors are w/in safety analysis assumption
Why is Target Value provided for delta I?
To compare actual delta I to predicted delta I to ensure core is operating properly.
What is the difference between a closed bullet and an open bullet in a procedure step?
A closed bullet must be performed, an open bullet can be done as needed
What is a level 1 procedure?
Continuous use
What is a level 2 procedure?
Reference use - Referring to a procedure periodically but the procedure needs to be at the work location
What is a level 3 procedure?
Information Use - An activity may be performed from memory but the procedure is available not necessarily at the work location
Who is allowed unlimited access to the control room?
SVP, plant manager, ops manager, Regulatory personnel, nuclear oversight, On-shift operating personnel, security doing rounds
When can verification requirements be waived?
By the shift manager for ALARA concerns
How many indication lens can be changed at a time?
Only one indication lens is to be removed from a control module in order to prevent replacing the lens in the wrong postion
When can the shift staffing be less than minimum?
It may be one less than minimum requirements for less than two hours. Not for being late or absent.
Who must be within 10 minutes of the control room?
SM, STA, EP communicator
What is the definition of an adverse condition?
Plant condition in which one or more parameters are outside normal operating bands and thus significantly reduce plant operating margin
When should Adverse Condition monitoring OP-AA-108-111 be entered?
If ops supervision believes there is reduced plant operating margin or degraded equipment that could lead to: safety hazard, SCRAM, loss or trip of equipment important to nuclear safety, inadvertent entry into a 7 day or less LCO, significant loss of generation
