Tech Specs Flashcards
3.8.1 AC Sources - Operating
Applicability?
A. two circuits of off-site power & Class elec distribution
B. two DG’s to supply respective Class elec busses
C. Auto Load sequencers for A and B train
MODES 1-4
Per 3.8.1 AC Sources - Operating bases, what is each SU transformer secondary winding sized to start and carry?
1/2 of non-class loads and one train of ESF in one unit
1 train of ESF in a second unit
Per 3.8.1 AC Sources - Operating bases, what is required for each DG?
start, accelerate to rated speed and voltage, output breaker closed within 10 seconds
proper sequencing of loads, including tripping non-essential loads
3.8.2 AC Sources - Shutdown
Applicability?
A. One circuit of off-site power and the Class Elec distribution per 3.8.10 Distribution Systems - Shutdown
B. One DG and Class Elec distribution per 3.8.10 Distribution Systems - Shutdown
MODES 5, 6, Defueled
Per 3.8.2 AC Sources - Shutdown bases, what is required of the DG?
start, accelerate to rated speed and voltage, output breaker closed within 10 seconds
proper sequencing of loads, including tripping non-essential loads
Define the MODES from section 1.0 of Tech Specs
What is specified in LCO’s?
minimum requirements for ensuring safe operation of the plant
When does the Completion time begin?
when an SRO on the on-shift crew that is responsible for plant operations determines an LCO is not met, and an ACTIONS Condition is entered
Per Tech spec 2.1 - Safety Limit(s), what are the Safety Limits?
In Modes 1 and 2, DNBR >/= 1.34
In Modes 1 and 2:
peak fuel centerline temp for westinghouse fuel < 5080F
peak fuel centerline temp for framatome fuel < 4901F
In Modes 1-5, RCS pressure </= 2750 psia
Per Tech Spec 2.2 - SL Violations, what actions do we take?
if DNBR or peak fuel centerline temp are violated, we restore compliance and be in MODE 3 in 1 hour
if RCS pressure is violated:
Modes 1 and 2, restore compliance and be in mode 3 in 1 hour
Modes 3-5, restore compliance in 5 minutes
If Safety Limits are violated, what is needed to start the plant up again?
NRC authorization
What is LCO 3.0.3?
Applicability?
LCO not met
associated action not provided, or if directed by associated actions
unit will be placed in a MODE or specified condition where the violated LCO is not applicable
Action shall be initiated within 1 hour to place the unit, as applicable, in:
A. Mode 3 in 7 hours
B. Mode 5 in 37 hours
Any exceptions are stated in individual Tech Specs
3.0.3 is only applicable in Modes 1-4
If you complete the required actions or corrective measures of a tech spec that originally got you into LCO 3.0.3, do you still have to complete LCO 3.0.3?
No
What is LCO 3.0.4?
when an LCO is not met, entry into a Mode or other specified condition in the Applicability shall only be made:
A. when the associated actions to be entered permit continued operation in the Mode/specified condition in the applicability for an unlimited period of time
B. After performance of a risk assessment
C. When an allowance is stated in the individual value, parameter, or other Specification
What is LCO 3.0.5?
equipment removed from service or declared inoperable to comply with ACTIONS may be returned to service to perform testing required to demonstrate operability of it or other equipment
What is LCO 3.0.6?
If a supported system LCO is not met solely due to a support system LCO not being met, the Conditions and Required Actions associated with the supported system are not required to be entered.
Only the support system LCO Actions are required to be entered.
What is LCO 3.0.8?
When one or more required snubbers are unable to perform their associated support function, any affected supported LCO(s) are not required to be declared not met solely for this reason if:
risk is assessed and managed AND:
a. the snubbers are associated with only one train or subsystem and are able to perform their function within 72 hours
b. the snubbers are associated with more than one train or subsystem and can perform their function within 12 hours
What is SR 3.0.1?
SRs shall be met during the Modes or specified conditions in the Applicability for individual LCOs, unless otherwise stated in the SR
Failure to meet a surveillance is a failure to meet the LCO
What is SR 3.0.2?
the specified Frequency for each SR is met if the Surveillance is performed within 1.25 times the interval specified
Does SR 3.0.2 apply if the Frequency is specified as ‘once’?
No. You cannot extend a completion time if the frequency is ‘once’
Does SR 3.0.2 apply if the Frequency is specified as ‘once per…’ basis?
yes. The frequency extension could apply to each performance after the initial performance
What is SR 3.0.3?
if a Surveillance was discovered to not be performed within the specified frequency, the declaration of an LCO not met may be delayed from time of discovery up to 24 hours or up to the limit of the specified Frequency, whichever is greater
a risk eval shall be performed for any Surveillance delayed greater than 24 hours and risk impact shall be managed
Per SR 3.0.3, if the surveillance is not performed within the delay period, what must be done?
LCO declared immediately and conditions must be met
What is a Completion Time?
When does this time start?
amount of time allowed for completing a Required Action
time starts at the time of discovery declared by an SRO
What is the maximum amount of time that a Risk Informed Completion Time can be calculated for?
30 days
When are Risk informed completion times applicable?
Modes 1 and 2
What are the limitations of Extension times?
The stated Completion Time, as measured from the intial entry of the condition, plus 24 hours
or
the stated Completion time as measured from discovery of the subsequent inoperability
whichever is more restrictive
Do completion time extensions apply to modified time zero completion times?
No
3.8.4 - DC Sources Operating
Applicability
Basis
Trains A and B DC electrical power subsystems shall be operable
Modes 1-4
2 batteries, battery charger for each battery and corresponding equipment, cabling to supply power to the bus
Maintaining 3.8.4 DC sources operable during an assumed loss of all offsite power or all onsite AC and worse case single failure.
LCO 3.8.5, DC Sources - Shutdown
Applicability
DC electrical power subsystem shall be operable to support DC power electrical distribution system required by LCO 3.8.10 Distribution Systems - Shutdown
Modes 5 and 6, during irradiated fuel movements
LCO 3.8.6, Battery Cell Parameters
Applicability
Battery parameters for the Train A and Train B electrical power subsystem
batteries shall be within limits
When associated DC electrical power subsystems are required to be
OPERABLE.
LCO 3.8.7, Inverters - Operating
Applicability
what are the allowable exceptions?
The required Train A and Train B inverters shall be OPERABLE.
Modes 1, 2, 3, and 4.
1 inverter can be disconnected from its associated battery for < or= 24 hours to equalize battery as long as its powered from its voltage regulator. and all others are on their inverter
A swing inverter and line-up switch can be used in place of an inverter. If a swing inverter is used in place the requirements of independence and redundancy between subsystems is maintained.
LCO 3.8.8, Inverters - Shutdown
applicability
Required inverters per LCO 3.8.10 Distribution Systems - Shutdown
Modes 5 and 6
During movement of irradiated fuel assemblies.
LCO 3.8.9, Distribution Systems
applicability
All four boards operable
Energized to proper voltage from inverter or voltage regulator
Modes 1-4
LCO 3.6.3, Containment Isolation Valves
applicability?
Basis?
Each containment isolation valve shall be OPERABLE.
MODES 1, 2, 3, and 4.
Safety function is related to minimizing the loss of reactor coolant inventory and establishing containment boundary during a DBA.
3.3.10, Post Accident Monitoring (PAM) Instrumentation
applicability?
Basis?
The PAM instrumentation for each Function in Table 3.3.10-1 shall be OPERABLE.
Modes 1-3
Two operable channels for all but one function to ensure no single failure prevents the operators from being presented with the info necessary to determine the status of the plant and to bring the plant to and maintain it in a safe condition following that accident.
TLCO 3.1.102 - Charging Pumps - Shutdown
Applicability?
At least 1 charging pump, HPSI, or LPSI in the boron injection flowpath required to be functional and able to be powered by an operable emergency power source
(VCT outlet valve V501 should be capable of isolating the VCT from charging pump suction line)
Modes 5 and 6
TLCO 3.1.103 - Charging Pumps - Operating
Applicability?
At least 2 charging functional
Modes 1-4
TLCO 3.4.100 - Auxiliary Spray System
Applicability?
Both Auxiliary Spray Valves shall be Functional
Modes 1-4
Aux Spray is required to depress the RCS by cooling the pressurizer to get to SDC. Required on natural circulation cooldowns
Distributes boron
T3.1.100, Flow Paths - Shutdown
Applicability?
As a minimum, one of the following boron injection flow paths shall be FUNCTIONAL:
a. If only the spent fuel pool in TLCO 3.1.104.a. is FUNCTIONAL, a flow path from the spent fuel pool via a gravity feed connection and a charging pump to the Reactor Coolant System.
b. If only the refueling water tank in Specification 3.1.104.b. is FUNCTIONAL, a flow path from the refueling water tank via either a charging pump, a high-pressure safety injection pump, or a low-pressure safety injection pump to the Reactor Coolant System.
Modes 5 and 6
LCO 3.5.5, Refueling Water Tank (RWT)
Applicability?
The RWT shall be OPERABLE.
Modes 1-4
T3.1.101, Flow Paths - Operating
At least two of the following three boron injection flow paths shall be FUNCTIONAL:
a. A gravity feed flow path from either the refueling water tank or the spent fuel pool through CH- 536 (RWT Gravity Feed Isolation Valve) and a charging pump to the Reactor Coolant System,
b. A gravity feed flow path from the refueling water tank through CH-327 (RWT Gravity Feed/Safety Injection System Isolation Valve) and a charging pump to the Reactor Coolant System,
c. A flow path from either the refueling water tank or the spent fuel pool through CH-164 (Boric Acid Filter Bypass Valve), utilizing gravity feed and a charging pump to the Reactor Coolant System.
T3.1.104, Borated Sources - Shutdown
Applicability?
As a minimum, one of the following borated water sources shall be
FUNCTIONAL:
a. The spent fuel pool
b. The refueling water tank
Modes 5 and 6
T3.1.105, Borated Sources - Operating
Applicability?
The spent fuel pool shall be FUNCTIONAL
Modes 1-4
TLCO 3.3.102 - Incore Detectors
The Incore Detection System shall be FUNCTIONAL with:
a. > 75% of incore locations, and
b. > 75% of all incore detectors with at least one incore detector in each
quadrant at each level, and
c. Sufficient FUNCTIONAL incore detectors to perform at least six tilt
estimates with at least one tilt estimate at each of three levels.
d. All 4x4 arrays of fuel assemblies that contain 16 fuel assemblies must
contain at least one FUNCTIONAL incore location.
SL 2.1.2, RCS Pressure Safety Limit
Applicability?
The RCS pressure shall be maintained at less than or equal to 2750 psia
Modes 1-5
The RCS pressurizer safety valves, the Main Steam Safety Valves (MSSVs), and the Reactor Pressure - High trip have settings established to ensure that the RCS pressure Safety Limit will not be exceeded.
The RCS pressurizer safety valves are sized to prevent system pressure from exceeding the design pressure by more than 10%.
LCO 3.4.1, RCS Pressure, Temperature, and Flow Departure from
Nucleate Boiling
Applicability?
When does it NOT apply?
RCS DNB parameters for pressurizer pressure, cold leg temperature, and RCS total
flow rate shall be within the limits specified in the COLR.
Mode 1 for RCS total flow rate.
Mode 1 and 2 for pressurizer pressure.
Mode 1 for RCS cold leg temperature (Tcold)
Mode 2 with Keff > 1 for RCS cold leg temperature (Tcold).
Pressurizer pressure limit does not apply during:
a. THERMAL POWER ramp > 5% RTP per minute; or
b. THERMAL POWER step > 10% RTP.
LCO 3.4.2, Minimum Temperature for Criticality
Applicability?
Each RCS loop temperature (Tcold) shall be 545 ºF
Mode 1
Mode 2 with Keff 1.0
LCO 3.4.4, RCS Loops Modes 1 and 2
Applicability?
Two RCS loops shall be OPERABLE and in operation
Modes 1 and 2
Specifying two RCS loops provides the minimum necessary paths (two SGs) for heat removal.
LCO 3.4.5, RCS Loops Mode 3
Applicability?
Two RCS loops shall OPERABLE and one RCS loop shall be in operation.
Mode 3
A minimum of one running RCP meets the LCO requirement for one loop in operation.
If No RCS loop is operable or no RCS loop is in operation
Stop dilutions and restore IMMEDIATELY
LCO 3.4.6, RCS Loops Mode 4
Applicability?
Two loops or trains consisting of any combination of RCS loops and shutdown
cooling (SDC) trains shall be OPERABLE and at least one loop or train shall
be in operation.
Mode 4
Notes:
1. All reactor coolant pumps (RCPs) and SDC pumps may be de-energized
for </= 1 hour per 8-hour period, provided:
a. No operations are permitted that would cause reduction of the RCS
boron concentration; and
b. Core outlet temperature is maintained at least 10°F below saturation
temperature.
- No RCP shall be started with any RCS cold leg temperature less than or
equal to the LTOP enable temperature specified in the PTLR unless the
secondary side water temperature in each Steam Generator (SG) <100°F
above each of the RCS cold leg temperatures. - No more than 2 RCPs may be in operation with RCS cold leg temperature
</= 200°F. No more than 3 RCPs may be in operation with RCS cold leg
temperature >200°F but </= 500°F.
LCO 3.4.7, SDC Trains Mode 5 loops filled
Applicability?
One Shutdown Cooling (SDC) train shall be OPERABLE and in operation, and
either:
a. One additional SDC train shall be OPERABLE; or
b. The secondary side water level of each Steam Generator (SG) shall be
>/= 25%.
Notes:
The SDC pump of the train in operation may be de-energized for </= 1 hour
per 8 hour period provided:
a. No operations are permitted that would cause reduction of the
RCS boron concentration; and
b. Core outlet temperature is maintained at least 10°F below
saturation temperature.
- One required SDC train may be inoperable for up to 2 hours for
surveillance testing provided that the other SDC train is OPERABLE and in
operation. - No Reactor Coolant Pump (RCP) shall be started with one or more of the
RCS cold leg temperatures less than or equal to the LTOP enable
temperature specified in the PTLR unless the secondary side water
temperature in each SG is <100°F above each of the RCS cold leg
temperatures. - No more than 2 RCPs may be in operation with RCS cold leg temperature
200°F. No more than 3 RCPs may be in operation with RCS cold leg
temperature >200°F but 500°F. - All SDC trains may be removed from operation during planned heatup to
MODE 4 when at least one RCS loop is in operation.
Mode 5 with loops filled
Can use LPSI or CS (</= 200 degrees F, </= 250 psia can be used.
LCO 3.4.8, SDC Trains Mode 5 loops not filled
Two Shutdown Cooling (SDC) trains shall be OPERABLE and one SDC train
shall be in operation.
Notes:
All SDC pumps may be de-energized for </=1 hour per 8 hour period:
a. The core outlet temperature is maintained > 10°F below
saturation temperature;
b. No operations are permitted that would cause a reduction of the
RCS boron concentration; and
c. No draining operations to further reduce the RCS water volume
are permitted.
- One SDC train may be inoperable for </=2 hours for surveillance testing
provided the other SDC train is OPERABLE and in operation.
LCO 3.4.9, Pressurizer
Applicability?
The pressurizer shall be operable with:
a. Pressurizer water level > 27% and < 56% and
b. Two groups of pressurizer heaters operable with the capacity of each
group > 125 KW.
Notes:
The pressurizer water level limit does not apply during:
a. THERMAL POWER ramp > 5% RTP per minute; or
b. THERMAL POWER step > 10% RTP.
Modes 1-3
LCO 3.4.10, PZR Safety Modes 1 - 3
Four pressurizer safety valves shall be operable with lift settings >/= 2450.25
psia and </= 2549.25 psia.
Modes 1-3
Ensures a steam bubbles exists. Max water level preserves steam space for pressure control. LCO helps minimize the consequences of potential overpressure transients.
–High level- Bubble maintained for pressure control
–Low level- Ensure heaters are covered
LCO 3.4.11, PZR Safety Valves Mode 4
One pressurizer safety valve shall be operable with a lift setting >/= 2450.25
psia and </= 2549.25 psia.
MODE 4 with all RCS cold leg temperatures greater than the LTOP enable temperature specified in the PTLR. (>/= 221 degrees F)
LCO 3.4.12, Pressurizer Vents
Applicability?
Four pressurizer vent paths shall be operable.
Modes 1-3
Mode 4 with RCS pressure >/= 385 psia
Vent path is flow capability from the pressurizer to the RDT or from the pressurizer to containment atmosphere. Loss of any single valve in the pressurizer vent system will cause two flow paths to become inoperable. A pressurizer vent path is required to depressurize the RCS in a SGTR design basis event which assumes LOP and Aux spray is unavailable.
LCO 3.4.13, LTOP Operability
Modes 4-6
○ An LTOP system shall be operable and consist of the following
§ Two operable SDC suction line relief vavles with lift settings </= 467 psig aligned to provide overpressure protection for the RCS.
OR
§ The RCS depressurized and an RCS Vent of >/= 16 square inches
○ Applicability
§ M4- When any RCS cold leg temperature is less than or equal to the LTOP enable temp in the PTLR
§ Mode 5
§ Mode 6- When the RV is on
○ LCO 3.0.4.b is not applicable when entering Mode 4
LCO 3.4.14, RCS Operational Leakage
Applicability?
Define identified, unidentified, and pressure boundary leakage
RCS operational Leakage shall be limited to:
a. No pressure boundary Leakage
b. 1 gpm unidentified Leakage
c. 10 gpm identified Leakage
d. 150 gals per day primary to secondary Leakage through any one SG.
Modes 1-4
Identified
○ Leakage that is captured and conducted to collection systems, sump, or collection tank
○ Leakage to containment atmosphere
○ Primary to secondary leakage
○ PIV leakage (3.4.15)
Unidentified
○ All leakage that is Not identified
Pressure Boundary
○ Leak through non-isolable fault in RCS component body, pip wall, or vessel wall
LCO 3.4.15, RCS PIV Leakage
Applicability?
Leakage from each RCS PIV shall be within limits.
Modes 1, 2, and 3
Mode 4, except valves in the shutdown cooling (SDC) flow path when in, or
during the transition to or from, the SDC mode of operation.
LCO 3.4.16, RCS Leakage Detection Instrumentation
Applicability?
Both of the following RCS leakage detection instrumentation shall be
OPERABLE:
* One containment sump monitor, and
* One containment atmosphere radioactivity monitor (gaseous and
particulate).
Requires instruments of diverse monitoring principles to be OPERABLE to provide a high degree of confidence that extremely small leaks are detected in time to allow actions to place the plant in a safe condition when the RCS leakage indicates a possible RC pressure boundary degradation.
LCO 3.4.17, RCS Specific Activity
Applicability?
The specific activity of the reactor coolant shall be within limits.
Modes 1-4
These LCO limits are established to minimize the offsite radioactivity dose consequences in the event of a steam generator tube rupture (SGTR) accident.
TLCO T3.4.100, Auxiliary Spray
Applicability?
Both auxiliary spray valves shall be FUNCTIONAL.
Modes 1-4
LCO 3.7.6, Condensate Storage System
The CST level shall be greater than or equal to 29.5 ft.
Modes 1-3
Mode 4 when steam generator is relied upon for heat removal.
LCO 3.7.16, Secondary Specific Activity
Applicability?
Secondary Specific Activity - The specific activity of the secondary coolant shall be
less than or equal to 0.10 microcuries/gram DOSE EQUIVALENT I-131.
Modes 1-4
LCO 3.7.6, Condensate Storage Tank
Applicability?
The CST level shall be ≥ 29.5 ft.
Modes 1-3
Mode 4 when the steam generator is relied upon for heat removal.
LCO 3.7.1, Steam Generator Safety Valves
applicability
The MSSVs shall be OPERABLE as specified in Table 3.7.1-1 and
Table 3.7.1-2.
Modes 1 -3
LCO 3.7.2, Main Steam Line Isolation Valves
applicability
Four MSIVs and their associated actuator trains shall be OPERABLE.
Modes 1 -3
Mode 4 except when all MSIVs are closed and deactivated
LCO 3.7.3, Feedwater Isolation Valves
applicability
Four economizer MFIVs and four downcomer MFIVs shall be OPERABLE.
Modes 1 -3
Mode 4 except when MFIV is closed and deactivated or isolated
by a closed and deactivated power operated valve.
LCO 3.7.4, Atmospheric Dump Valves
applicability
Four ADV lines shall be OPERABLE
MODES 1, 2, and 3
MODE 4 when steam generator is being relied upon for heat removal.
LCO 3.6.5, Containment Air Temperature
applicability
Containment average air temperature shall be 117°F.
Modes 1 - 4
3.6.5A- Temp not within limit> Restore in 8 hours
Not met be in M3 in 6 hours and Mode 5 in 36 hours
LCO 3.7.10, Essential Chilled Water System
applicability?
Two EC trains shall be OPERABLE
Modes 1 - 4
LCO 3.7.7, Essential Cooling Water
applicability?
Two EW trains shall be OPERABLE.
Modes 1 - 4
TLCO 3.8.102, MOV Thermal Overload Protection and Bypass
Devices
the thermal overload protection and bypass devices, integral with the
motor starter, of each valve used in safety systems shall be FUNCTIONAL.
The TLCO is applicable whenever the motor-operated valve is required to be OPERABLE/FUNCTIONAL.
