TS Lesson Plan Flashcards
(38 cards)
State the authorized steady-state reactor core power level for the Palisades reactor in accordance with the Palisades Plant Facility Operating License.
2565.4 Megawatts thermal (100 percent rated power)
Describe the conditions under which any action may be taken that deviates from a license condition or technical specification in accordance with 10CFR50.54(x) and 10CFR50.54(y).
A licensee may take reasonable action that departs from a license condition or a technical specification (contained in a license issued under this part) in an emergency when this action is immediately needed to protect the public health and safety and no action consistent with license conditions and technical specifications that can provide adequate or equivalent protection is immediately apparent.
Explain the term Safety Limit as used in the Technical Specifications.
Safety limits for nuclear reactors are limits upon important process variables that are found to be necessary to reasonably protect the integrity of certain of the physical barriers that guard against the uncontrolled release of radioactivity.
Explain the term Limiting Safety System Settings as used in the Technical Specifications.
Limiting safety system settings for nuclear reactors are settings for automatic protective devices related to those variables having significant safety functions.
Explain the term Limiting Condition for Operation (LCO) as used in the Technical Specifications.
Limiting conditions for operation are the lowest functional capability or performance levels of equipment required for safe operation of the facility.
Explain the term Surveillance Requirements as used in the Technical Specifications.
Surveillance requirements are requirements relating to test, calibration, or inspection to assure that the necessary quality of systems and components is maintained, that facility operation will be within safety limits, and that the limiting conditions for operation will be met
Explain the term AXIAL OFFSET (AO):
AXIAL OFFSET (AO) shall be the power generated in the lower half of the core less the power generated in the upper half of the core, divided by the sum of the power generated in the lower and upper halves of the core (determined using the incore monitoring system).
Explain the term AXIAL SHAPE INDEX (ASI):
“AXIAL SHAPE INDEX (ASI) shall be the power generated in the lower half of the core less the power generated in the upper half of the core, divided by the sum of the power generated in the lower and upper halves of the core (determined using the excore monitoring system).”
Explain the term CHANNEL CALIBRATION:
A CHANNEL CALIBRATION shall be the adjustment, as necessary, of the channel output such that it responds within the necessary range and accuracy to known values of the parameter that the channel monitors.
Explain the term CHANNEL CHECK:
A CHANNEL CHECK shall be the qualitative assessment, by observation, of channel behavior during operation.
Explain the term CHANNEL FUNCTIONAL TEST:
A CHANNEL FUNCTIONAL TEST shall be: Analog and bistable channels - the injection of a simulated or actual signal into the channel as close to the sensor as practicable to verify OPERABILITY, of all devices in the channel required for channel OPERABILITY; Digital channels - the use of diagnostic programs to test digital hardware and the injection of simulated process data into the channel to verify OPERABILITY, of all devices in the channel required for channel OPERABILITY.”
Explain the term CORE ALTERATION:
CORE ALTERATION shall be the movement of any fuel, sources, or control rods within the reactor vessel with the vessel head removed and fuel in the vessel. Suspension of CORE ALTERATIONS shall not preclude completion of movement of a component to a safe position.
Explain the term MODE:
A MODE shall correspond to any one inclusive combination of core reactivity condition, power level, average primary coolant temperature, and reactor vessel head closure bolt tensioning specified in Table 1.1 1 with fuel in the reactor vessel.
Explain the term OPERABLE - OPERABILITY:
A system, subsystem, train, component, or device shall be OPERABLE or have OPERABILITY when it is capable of performing its specified safety function(s) and when all necessary attendant instrumentation, controls, normal or emergency electrical power, cooling and seal water, lubrication, and other auxiliary equipment that are required for the system, subsystem, train, component, or device to perform its specified safety function(s) are also capable of performing their related support function(s).
Explain the term QUADRANT POWER TILT:
QUADRANT POWER TILT (Tq) shall be the maximum positive ratio of the power generated in any quadrant minus the average quadrant power, to the average quadrant power.
Explain the term STAGGERED TEST BASIS:
A STAGGERED TEST BASIS shall consist of the testing of one of the systems, subsystems, channels, or other designated components during the interval specified by the Surveillance Frequency, so that all systems, subsystems, channels, or other designated components are tested during n Surveillance Frequency intervals, where n is the total number of systems, subsystems, channels, or other designated components in the associated function.” STAGGERED TEST BASIS is currently only used once in Palisades TS (TS 5.5.16.d)
Explain the term RATED THERMAL POWER:
RATED THERMAL POWER (RTP) shall be a total reactor core heat transfer rate to the primary coolant of 2565.4 Mwt.
Explain the term REFUELING BORON CONCENTRATION:
REFUELING BORON CONCENTRATION shall be a Primary Coolant System boron concentration of ≥1720 ppm and sufficient to assure the reactor is subcritical by ≥ 5% Δρ with all control rods withdrawn.
Explain the term SHUTDOWN MARGIN:
SHUTDOWN MARGIN (SDM) shall be the instantaneous amount of reactivity by which the reactor is subcritical or would be subcritical from its present condition assuming: a) All full-length control rods (shutdown and regulating) are fully inserted except for the single rod of highest reactivity worth, which is assumed to be fully withdrawn. However, with all full length control rods verified fully inserted by two independent means, it is not necessary to account for a stuck rod in the SDM calculation. With any full length control rods not capable of being fully inserted, the reactivity worth of these rods must be accounted for in the determination of SDM; and b) There is no change in part length rod position.”
Explain the term THERMAL POWER:
THERMAL POWER shall be the total reactor core heat transfer rate to the primary coolant
Define Mode 1.
Power Operation
- Reactivity ≥ 0.99
- >5% rated thermal power
- Average Primary Coolant Temperature is NA
Define Mode 2.
Startup
- Reactivity ≥ 0.99,
- ≤ 5% Rated Thermal Power
- Tave is N/A
Define Mode 3.
Hot Standby
- Reactivity <0.99
- Power N/A
- Tave ≥300F
Define Mode 4.
Hot Shutdown
- Reactivity is <0.99
- Rated Thermal Power is N/A
- Tave is 300 >Tave >200
