40DP-0OP02 Conduct Of Ops Flashcards
What are the CRS’s responsibilities related to manual PPS or ESFAS actuations?
The CRS:
• Directs a manual reactor trip when Reactor Protection System trip setpoints are approached and manual action by an operator, or by automatic system operation, is unlikely to prevent reaching the setpoints.
• Directs a manual reactor trip when trip setpoints have been exceeded and a trip has not occurred.
• Directs manual initiation of Engineered Safety Features when automatic Engineered Safety Feature setpoints are approached or exceeded.
Describe the RO’s responsibilities related to manual PPS or ESFAS actuations?
The RO:
• Manually trips the reactor if Reactor Protection System trip setpoints have been exceeded and a trip has not occurred. Expected performance is to detect and verify the condition, then notify other Control Room personnel of the condition (using update or focused communication) while taking immediate action to trip the reactor.
• Manually initiates Engineered Safety Features if automatic Engineered Safety Feature setpoints are exceeded. Expected performance is to detect and verify the condition, then notify other Control Room personnel of the condition (using update or focused communication) while taking immediate action to initiate actuation.
• Has the responsibility and authority for directing or placing a PVGS unit in a reduced power or shutdown condition to ensure nuclear safety.
Define Control Room Advisor and describe how they interact with Control Room staff.
Control Room Advisors: Non-operations personnel (engineering, managerial, maintenance, etc.) that support the operating staff by providing recommendations, advice, or other information that could potentially impact operating decisions. Control Room Advisors normally communicate directly with the Shift Manager only, who then relays information and direction to the CRS. Control Room Advisors do not perform operational activities normally completed by operators.
State minimum manning requirements for shift crew manning.
The minimum required shift crew manning is as follows:
• One Shift Manager per unit
• One Control Room Supervisor per unit
• Two licensed reactor operators per unit – In addition to the two reactor operators per unit, one unit shall have an additional reactor operator (who may be filling an Auxiliary Operator position) to fulfill the requirement of site Fire Team Advisor
• Four Auxiliary Operators per unit – At least one Auxiliary Operator per Site crew will be a proficient Radwaste Equipment Operator.
(Auxiliary operators are considered to be part of the shift crew composition if they are on site and in direct communication with the Control Room via radio or pager.)
• One additional Auxiliary Operator in Unit 1 for the “Outside Area Watch”
• One Shift Technical Advisor (STA) per unit or two STAs for the site and one Emergency Notification System (ENS) communicator. The ENS communicator is filled by an individual knowledgeable of the plant (for example: an RO, SRO, STA, AO or a previously licensed individual).
• At least two reactor operators and three auxiliary operators shall be present within each unit at all times.
(Within the Unit is defined as: The area containing each unit bounded by the protected area fence and the fences running north and south between the spray ponds and the adjacent unit.)
Describe the required actions if the shift manning is less than the minimum required.
Except for the Shift Manager, the composition of the shift crew may be one less than the minimum manning required for the above requirements for a period not to exceed 2 hours in order to accommodate unexpected absence of on duty shift crew members. These restrictions are allowable provided immediate action is taken to restore crew manning to the minimum requirements. However, this provision does not permit any shift crew position to be unmanned upon shift change due to an oncoming shift crew member being late or absent.
Discuss staffing requirements related to the “At the Controls Area” of the control room.
- When fuel is in the vessel, at least one licensed individual remains in the “At The Controls Area” at all times.
- The “Operator At The Controls” (OATC) does not leave the “At The Controls Area” without proper relief except during an emergency effecting plant safety which requires entering other areas of the Control Room.
- Either the OATC or CRS remains in the Control Room at all times and normally in the B02 to B06 horseshoe area.
- In Modes 1 through 4, the CRS remains in the “At The Controls Area” or “Briefing Area” and maintains the Control Room command function unless properly relieved. However, short duration access to the STSC or SM office is permitted without relief.
- In Modes 5 and 6 the individual designated to maintain the Control Room command function will normally be the CRS but may be either a qualified SRO or a licensed reactor operator.
Describe the maintenance of the Control Room Command Function.
In Modes 1 through 4, the CRS maintains the Control Room command function unless properly relieved. The Shift Manager assumes CRS responsibilities when this individual requires relief. In Modes 5 and 6 the individual designated to maintain the Control Room command function will normally be the CRS but may be either a qualified SRO or a licensed reactor operator.
Describe the criteria used to determine whether a task can be considered “Skill of the Craft”.
Skill of the Craft tasks are defined by all of the following criteria:
• The complexity of a task is below the threshold for which written direction is required as determined by the CRS or SM, or the task has been previously identified as Skill of the Craft. Examples:
1. HVAC temperature controller adjustments
2. Control Element Drive Mechanism Control System (CEDMCS) mode selector switch operation
3. CEDMCS Control Element Assembly (CEA) selector switch operation
4. Blowdown stack makeup
5. Cycling Pressurizer heater breakers
6. Checking CEA selection on RPCB
7. Megavolt-Amperes Reactive (MVAR) adjustment
8. Resetting alarms on equipment (Requires Control Room notification)
A task is low risk and performance of the task without written guidance will not result in an event as determined by the CRS or SM.
The operator who is to perform the task has the capability to complete all of the actions required to perform the task successfully (for example: operate valves, read gages, operate necessary tools, etc.) as determined by the CRS or SM.
Describe the responsibilities of the Shift Manager regarding key control.
Vital Area Keys and Vital Area Key Log:
• Vital Area keys will not be issued without Shift Manager authorization.
• The Shift Manager shall inform the Security Section Leader as soon as practical after issuing Vital Area keys to Operations personnel.
Non-Vital Area Key Control:
• The SM or CRS is responsible for all of the following:
o Ensuring that keys are issued to individuals that have need for access.
o Ensuring that the Control Room Key Log is maintained.
o Ensuring that special Controlled Key instructions are maintained in the Control Room Key Log.
o Verifying that all applicable special instructions are met and satisfied prior to key issue.
o Verifying that key inventories are completed as required. o Ensuring the Control Room Key Locker containing the controlled keys is locked except for issuance of keys and performance of inventories.
• Missing or lost keys are addressed as follows:
o Missing or lost keys shall be reported to the Shift Manager.
o Upon notification of a lost key the Shift Manager performs both of the following:
-Determines if plant safety could be jeopardized because of missing key.
-Initiates search for the missing key.
Describe requirements for control of Vital Area Keys.
Normally the key to the Vital Area Keybox is under control of the CRS.
Vital Area keys will not be issued without Shift Manager authorization.
Vital Area keys shall not be removed from the ACAD protected area.
Vital Area keys checked out to Operations personnel shall only be used when the ACAD access ability to an area is not functioning and a timely entry into the area is required.
The Shift Manager shall inform the Security Section Leader as soon as practical after issuing Vital Area keys to Operations personnel.
The issuance and return of all Vital Area Keys shall be documented on the Unit Vital Area Key Control, Issue and Accountability Log.
State the audit requirements concerning Vital Area Keys.
Vital Area Keys:
• When the Security Department performs an inventory of the Vital Area Key Locker, then all completed Security Padlock, Key & Test ACAD Accountability log sheets should be turned over to the individual performing the inventory.
Describe actions necessary for a missing or lost key.
• Missing or lost keys shall be reported to the Shift Manager.
• Upon notification of a lost key the Shift Manager performs both of the following:
o Determines if plant safety could be jeopardized because of the missing key. o Initiates a search for the lost key.
• If plant safety could be jeopardized by the missing key and the key is not found, then perform the following:
o Alert security of the area affected. o Initiate action to change associated locks and have new keys issued.
• If plant safety is not involved, then initiate a Lock and Door Service Request to obtain a duplicate key from the Locksmith.
Describe when a manual SESS alarm is required to be inserted.
A manual SESS alarm input shall be initiated when any ES annunciator panel monitored component or system is either:
• Disabled and unable to perform the intended function by any method that is not alarmed; or
• Rendered incapable of performing the intended design function by any method that is not alarmed.
The manual SESS alarm is required if the impairment or failure is anticipated to last longer than the current shift.
• The manual SESS alarm should be initiated at the time of occurrence but in all cases shall be in place prior to shift turnover.
Document initiation and removal of all SESS manual inputs in the Unit Log stating why the input is required or removed.
Initiate a Technical Specification Component Condition Record (TSCCR) if applicable.
The CRS shall be informed of all SESS panel changes.
Describe control room operator’s responsibilities with respect to Reactivity Management.
A reactivity brief will be conducted at the beginning of each shift following completion of turnover by the Control Room Staff.
• All members of the Control Room Staff should attend the brief.
A reactivity brief will be conducted before the start of all reactivity evolutions.
• The following information should be included in the reactivity brief:
o Purpose of the change
o The reactivity change method o Amount/rate of reactivity addition
o Expected plant response
o Parameters to monitor and expected values
o Appropriate limits if applicable o What type of oversight and how it will be applied
During normal reactivity manipulations, Control Room activities not associated with the reactivity change are stopped to ensure the entire team focuses on reactivity management.
• If other activities are in progress and cannot be stopped, then a Reactivity Manager is provided to ensure appropriate oversight.
At a minimum, the following parameters are monitored during reactivity manipulations:
• Redundant reactor power indications
• RCS temperature
• ASI
Describe the process when scheduling equipment maintenance which requires voluntary entry into Conditions and Actions of the Unit Technical Specifications.
The following guidance is to be used in scheduling equipment maintenance which requires voluntary entry into Conditions and Required Actions of the Units Technical Specifications:
• Only one safety train shall be worked on at a time.
• Whenever possible, only one component in a train should be taken out at a time.
• If more than one component (that is: LPSI and HPSI) is taken out concurrently, then the Unit Operations Manager should be consulted.
• The target time for a component to be out of service should be limited to a maximum of one-half the allotted Completion time.
• Scheduling maintenance activities shall comply with Maintenance Rule considerations for equipment availability and risk assessment.