Systems Exam 1 Comprehensive Deck for Review Flashcards

Question

Relay/Contact Suffixes PB

Answer 1

push button

Answer 2

time delay pickup contacts typically change state at some set time interval after the device is actuated

Answer 3

time delay dropout contacts typically change state at some set time interval after the device is de-energized

Answer 4

time delay closing

Answer 5

time delay opening

Answer 6

16 - nominal pipe size (16") CT - system (CT: containment spray) 1 - Unit 1 003 - line number within that system) 151R - piping category (R = potentially radioactive) 2 - safety class

Answer 7

gate valve

Answer 8

double disc gate valve

Answer 9

globe valve

Answer 10

needle valve

Answer 11

plug cock valve

Answer 12

ball valve

Answer 13

diaphragm valve

Answer 14

hermetically sealed valve

Answer 15

butterfly valve (flanged or wafer type)

Answer 16

post indicator valve

Answer 17

fire protection post indicator valve

Answer 18

vacuum breaker

Answer 19

float check valve

Answer 20

stop check valve

Answer 21

safety or relief valve

Answer 22

air diaphragm operator

Answer 23

piston operator

Answer 24

manual gear operator

Answer 25

extension stem operator

Answer 26

throttling

Answer 27

temperature control device

Answer 28

pressure switch

Answer 29

ground protective relay

Answer 30

alarm annunciator (if two of these symbols on the same sheet share the same subscript, they have a common annunciator window)

Answer 31

reactor trip annunciator ("first out")

Answer 32

turbine trip annunciator

Answer 33

Change the leading 0 to a 2, e.g. M1-0225 becomes M1-2225.

Answer 34

de-energized

Answer 35

space heater rating

Answer 36

instruments that detect significant degradation of the Reactor Coolant Pressure Boundary

Answer 37

initial conditions for design basis accidents or transients

Answer 38

structure, system, or component that mitigates a design basis accident or transient

Answer 39

structure, system, or component that is significant to public health and safety

Answer 40

qualitative assessment of channel behavior during operation, i.e. comparing a channel's status and indication to other channels that measure the same thing

Answer 41

moving fuel, sources, or reactivity components within the reactor vessel when the vessel head is removed and there is fuel in the vessel NOTE: "Suspension of CORE ALTERATIONS" doesn't block anyone from moving a component to a safe position

Answer 42

Identified, Unidentified, or Pressure Boundary LEAKAGE

Answer 43

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 required related/supporting equipment is also capable of performing related support functions. (Required/related equipment = necessary instrumentation, controls, normal or emergency electrical power, cooling and seal water, lubrication, and other auxiliary equipment.)

Answer 44

staggering the testing of components in a particular system (or other group of components) during the required surveillance interval so that all the components are tested within the time frame, but they don't all have to be tested at once

Answer 45

Basically gives the operating status of the plant when fuel is present in the reactor through a combination of: →core reactivity condition →power level →avg RCS temp →reactor vessel head closure bolt tensioning

Answer 46

"USLDA" Section 1 - Use and Application Section 2 - Safety Limits Section 3 - LCO/SR Applicability Section 4 - Design Features Section 5 - Administrative Controls

Answer 47

Power Operation > 5% power k-eff ≥ 0.99

Answer 48

Startup ≤ 5% power k-eff ≥ 0.99

Answer 49

Hot Standby RCS T-avg ≥ 350 k-eff < 0.99

Answer 50

Hot Shutdown 200 < RCS T-avg < 350 k-eff < 0.99 (all reactor vessel head closure bolts fully tensioned)

Answer 51

Cold Shutdown RCS T-avg ≤ 200 k-eff < 0.99 (all reactor vessel head closure bolts fully tensioned)

Answer 52

Refueling RCS T-avg, % power, and k-eff are all N/A One or more reactor vessel head closure bolts are less than fully tensioned.

Answer 53

"SAP" - Sump, Atmosphere, Primary (to secondary) →LEAKAGE like from pump seals or valve packing (except RCP seal water injection or leakoff) that is captured in a sump or collection system →LEAKAGE into the containment atmosphere from sources that: →the specific location is identified and →they don't interfere with leakage detection systems →are not pressure boundary leakage →RCS LEAKAGE through a steam generator to the secondary system (primary to secondary)

Answer 54

all LEAKAGE (except from RCP seal water injection or leakoff) that is not identified LEAKAGE

Answer 55

LEAKAGE (except primary to secondary) through a non-isolable fault in an RCS component body, pipe wall, or vessel wall

Answer 56

LCOs must be met when applicable

Answer 57

When an LCO is not met, enter all applicable Conditions and complete the Required Actions within the stated Completion Time | "The second shoe drops."

Answer 58

If Required Actions/Completion Times are not met or no applicable Conditions are provided, place the plant in a MODE or other specified condition where the LCO does not apply

Answer 59

Entering the Applicability of an LCO when that LCO is not met is only allowed under one of the following conditions: a) Required Actions allow unlimited operation b) A risk assessment is performed c) An exception is stated in the specification

Answer 60

Provides an exception to LCO 3.0.2 for the performance of OPERABILITY testing | "5-2 running back"

Answer 61

Supported system Required Actions do not need to be performed when the support system is inoperable | "Six Supported Systems"

Answer 62

Provides the justification to suspend certain LCOs during the performance of Physics Testing, by using LCO 3.1.8.

Answer 63

Surveillances must be met when the LCO is applicable

Answer 64

Allows a 25% extension for Surveillance Frequencies and for Required Actions with Completion Times stated as "once per..." The extension is not allowed for Frequencies stated as "once" or the first performance of a "once per..." Completion Time. | "Two is for 25"

Answer 65

Allows an additional 24 hours or the limit of the specified Frequency, whichever is greater, to perform an SR that was discovered to not be performed prior to declaring the LCO not met. | "24 divided by 3"

Answer 66

Entering the Applicability of an LCO is only allowed when the SRs have been met within their specified Frequency | "Four for Frequency"

Answer 67

Yes, it's considered an LBD, but it is NOT a part of Tech Specs. Revision requires SORC and Plant Manager approval as long as the changes meet 50.59SC. Otherwise, NRC approval is req'd. | "M & M" TRM and Manager

Answer 68

Same except there is no 3.0.3 and 3.0.6 in the TRM. For 3.0.3 the TRM either: 1. Directs user to TS 2. Has applicable actions in them 3. Need an IR written but a shutdown is not req'd

Answer 69

Revision requires SORC and Site VP approval The ODCM is considered a support document for Tech Specs. | "C, S & S" = SORC and Site VP

Answer 70

→per calendar quarter: < 1.5 mrem to the whole body, and < 5 mrem to any organ →per calendar year: < 3 mrem to the whole body, and < 10 mrem to any organ

Answer 71

Noble Gasses: → <500 mrems/yr to the total body → <3,000 mrems/yr to the skin Particulate nuclides w/half-lives >8 days (I-131/133, H3, etc.): → <1,500 mrems/yr to any organ

Answer 72

Noble Gasses: →per calendar quarter: <5 mrads gamma, <10 mrads beta →per calendar year: <10 mrads gamma, < 20 mrads beta Particulate nuclides w/half-lives >8 days (I-131/133, H3, etc.): →per calendar quarter: <7.5 mr to any organ →per calendar year: <15 mr

Answer 73

→Provide reasonable assurance that the processing and packaging of liquid or wet radioactive wastes into a solid form at CPNPP is accomplished in accordance with Federal and State regulations regarding radioactive waste form requirements for near-surface disposal →Procedural guidance provided by STA-713

Answer 74

→documents referenced become the law, like the CFR is →used to reduce size of CFR

Answer 75

Notices, Instructions and Reports to Workers; Inspections →Licensee must keep radiation exposure record →Prohibits employment discrimination by a licensee for going to NRC →Workers must be trained in RP procedures

Answer 76

Standards for Protection Against Radiation →establish industry standard to be ALARA →exposure limits for workers and public

Answer 77

Reporting Defects and Non-Compliances →notify NRC of failure to comply with Atomic Energy Act of 1954 or any rules and regulations that could be a substantial safety hazard or a defect in the construction or operation of a facility, its activities, or components ## Footnote (If you go out for your 21st birthday, you might temporarily become defective and non-compliant.)

Answer 78

Domestic Licensing of Production and Utilization Facilities →specifies the regulations that govern the licensing of nuclear facilities →defines "controls" (anything that directly affects reactivity or power level of reactor) →describes RCS pressure boundary →controls special nuclear material →source of 50.59 reviews

Answer 79

Operator Licensing →procedures and criteria governing issuance and maintenance and renewal of licenses for operators →license issued for term of 6 years →submit renewal within 30 days of expiration →medical exam req'd within 6 months of initial licensing and exam every 2 years →physical/medical changes →must stand certain number of watches →licensed individual must notify NRC of felony convictions (30 days) →staffing requirements

Answer 80

Reactor Site Criteria →describes criteria which guide NRC in evaluation of suitability of proposed nuclear facilities →defines Exclusion Area and Low Population Zone

Answer 81

Describes facility and operation specific to plant. →proves CPNPP meets the requirements of 10CFR50 →changes approved by Nuclear Licensing Manager and must be submitted to NRC every 18 months.

Answer 82

1. Characteristics of reactor design and proposed operation. 2. Population density and land use in the vicinity of the site. 3. Physical characteristics of the site including geology, seismology, meteorology, and hydrology

Answer 83

seven 8-hour shifts per quarter or five 12-hour shifts per calendar quarter (partial shifts don't count)

Answer 84

"Control" means any apparatus or mechanism that, if manipulated, directly affects the reactivity or power level of the reactor

Answer 85

"Reactor Coolant System Pressure Boundary" is all pressure-containing components, such as pressure vessels, piping, pumps, and valves which are part of the reactor coolant system or are connected to the reactor coolant system, up to and including: 1. The outermost containment isolation valve in system piping which penetrates the primary reactor containment, or 2. The second of two valves normally closed during normal reactor operation in system piping which does not penetrate the primary reactor containment, or 3. The reactor coolant system safety and relief valves

Answer 86

→any emergency classification →invoking 50.54(x) (-Security Reportable event) (-Cyber attack)

Answer 87

→valid ECCS actuation →valid RPS actuation w/critical Rx →any event requiring new release or notification to an offsite agency →any shutdown driven by tech specs

Answer 88

→loss of emergency assessment capability →any event resulting in a degraded plant or unanalyzed condition →valid ESF actuation signal: RPS w/ Rx not critical CNTMT isolation or MSIV isolation AFW CNTMT Spray EDG auto start ECCS →any event or condition that could have prevented a safety function →transport of a radioactively contaminated person offsite

Answer 89

Notify OSHA in 4 hours. Notify the NRC in 8 hours. (per STA-501)

Answer 90

the date or time which starts the clock for reports due to regulatory agencies (typically the date that a CPNPP worker identifies a problem or an issue) (if the problem requires an engineering evaluation to determine operability or significance, the Event Discovery Date is the date the engineering evaluation is completed)

Answer 91

any incident representing and attempted, threatened, or actual breach of the safeguards system or reduction of the operational effectiveness of that system

Answer 92

any radioactive material (except special nuclear material) yielded in or made radioactive by exposure to the radiation incident to the process of producing or utilizing special nuclear material.

Answer 93

Plutonium, Uranium 233, Uranium enriched with the isotope 233 or isotope 235, and any other material (fuel).

Answer 94

1. TDAWFP 2. SSWPs 3. EDGs

Answer 95

→provides the specified safety function and support functions →expected to perform as designed, tested, and maintained →has all necessary attendant instrumentation, controls, normal or emergency electrical power, cooling and seal water, lubrication, and other auxiliary equipment

Answer 96

a document listing the implementing and trigger procedures, programs and administrative processes satisfying the test and inspection requirements of Technical Specifications, the TRM, Part I of the ODCM and the IST Plan (applicable Modes and frequencies are also indicated)

Answer 97

No, but you can recalibrate test instruments and then repeat pump or valve tests. (equipment must still be declared inoperable as soon as the data is recognized as being outside the acceptance criteria)

Answer 98

Not necessarily, per Ops GL 18, Att. 5.

Answer 99

Voluntary entry into LCO Actions for various reasons, including testing and corrective or preventive maintenance; shall be authorized by the Shift Operations Manager, Shift Manager, or as part of a planned schedule.

Answer 100

→Safety Significant Component (SSC) is capable of performing its specified function(s) to support operation of plant systems or plant evolutions →status is used to provide a "defense in depth" measure to assure the availability of functions necessary to support the present operational condition of the plant →available implies the equipment is functional but does not satisfy OPERABILITY requirements.

Answer 101

A form or electronic program entry used to track selected Out-Of-Service equipment for systems not required by Tech Specs, TRM or the ODCM, but are considered as directly impacting plant safety. →AMSAC →Instrument Air →Spent Fuel Pool Cooling →RMUW →Safeguard Sump Pumps →Fire Protection Equipment →Emergency Lighting →Plant Computer →Major valves associated →Limitorque Motor Operated Valves with ERG support requiring cable ties to restrain the declutch levers No Technical Specification equipment may be entered into this log.

Answer 102

Are used to track conditions affecting SSCs where entry into the applicable LCO is not required

Answer 103

Should be closed or converted to an Active or Tracking LCOAR as required prior to the Applicability required by the associated SSC LCO (previously had a Mode 2 closure requirement, but no longer has any Mode restrictions due to various Mode 1 hot torques)

Answer 104

Lost both trains. An Operability determination is performed to establish which LCO(s) are not met, then SFD is performed for support system. For the purpose of the Safety Function Determination Program (SFDP), a LOSF may exist when a Support System is inoperable, and: 1. A required system redundant to the system(s) supported by the inoperable Support System is also inoperable; or 2. A required system redundant to the system(s) in turn supported by the inoperable Supported System is also inoperable; or 3. A required system redundant to the Support System(s) for the Supported Systems A) and B) above is also inoperable.

Answer 105

The time duration for SSC operation that is credited in the design basis for the SSC to perform its specified safety function. The term "mission time" is not routinely used in the TS Bases or FSAR; however, the description of the affected SSC's or support SSC's (SSC supporting the functions of the affected SSC) Specified Function/Specified Safety Function can be utilized to determine the time duration credited for the affected SSC. Per STI-422.01.

Answer 106

Corona is an electrical discharge caused by ionization of the atmosphere surrounding high voltage conductors causing heat buildup. Corona rings reduce/prevent the ionization by distributing the electrical field over a larger area.

Answer 107

→an electrical protection scheme where protective devices (relays) which are geographically separated can communicate with each other to detect and isolate faults at the appropriate locations to minimize effect on the grid

Answer 108

→relays communicate with each other via high frequency carrier signal on the grid conductors; signal is detected at each location and used to send trip signals to the appropriate locations when a fault is detected

Answer 109

reclose on time delay only; do not detect if fault has cleared or not

Answer 110

personnel and electrical safety for maintenance or fault isolation (require a key to unlock)

Answer 111

→closes when grid voltage drops below 136.5 kV for 2 seconds →opens when grid voltage increases to 143 kV for 2 seconds (capacitor bank expected to raise 138 kV grid voltage by 1 kV when in service)

Answer 112

→low SF6 gas pressure →transmission line fault (only for breakers tied directly to transmission lines) →pole disagreement →bus lockout “ltpb = light peanut butter”

Answer 113

Unit 1 Safeguards Buses: →normal power is 345 kV →alternate power is 138 kV Unit 2 Safeguards Buses: →normal power is 138 kV →alternate power is 345 kV

Answer 114

→common trips →main generator lockout →turbine trip

Answer 115

→line fault →bus fault

Answer 116

→bus fault →transformer fault

Answer 117

→86 on associated transformer →associated transformer sudden pressure →bus differential →bus overcurrent

Answer 118

→auto closes on fault of XSTA or XST1A →must be manually reset

Answer 119

→86-1 or 86-2 on associated transformer →associated transformer no-load relay energized

Answer 120

→86 lockout relays must be reset →ground switch GXST1 must be open →associated transformer no-load relay energized (transformer is unloaded)

Answer 121

→86-1 or 86-2 on associated transformer →supply breakers open (7970/7980) →associated transformer no-load relay energized →once applicable MOAS is open, then breakers 7970/7980 will reclose to restore power to the other transformer

Answer 122

→86 lockout relays must be reset →associated transformer no-load relay energized (transformer is unloaded) →8032 (XST2A supply) has no interlocks; local operation only

Answer 123

“Control” means any apparatus or mechanism that, if manipulated, directly affects the reactivity or power level of the reactor. Generator output can directly affect reactor power.

Answer 124

shift man (need a key from control room or security to enter)

Answer 125

→Modes 1-4 →two offsite sources must be available →two DGs must be available →automatic load sequencers for Train A and Train B Two offsite sources can be satisfied by: →"Stephen Parker" - 138 kV Stephenville with 345 kV Parker #1 OR Parker #2 →"Number 2 Bends" - 138 kV Carmichael Bend with any 345 kV line except for Mitchell Bend (138 kV Stephenville line crosses all 345 kV lines other than Parker 1 and 2)

Answer 126

→Parker 1 - 345 kV East Bus →Stephenville - 138 kV East Bus →Carmichael Bend - 138 kV West Bus

Answer 127

→Modes 5 & 6 →one offsite source must be available →one DG must be available

Answer 128

1 Hour or Less Actions →LCO 3.8.1.A One required offsite source inoperable: SR 3.8.1.1 (same as OPT-215) with completion time of one hour AND once per 8 hours thereafter →LCO 3.8.1.B One required DG inoperable: SR 3.8.1.1 (same as OPT-215) with completion time of one hour AND once per 8 hours thereafter →LCO 3.8.1.C Two required offsite circuits inoperable: restore one required offsite circuit to operable within 24 hours →LCO3.8.1.H Three or more required AC sources inoperable: enter TS LCO 3.0.3 immediately

Answer 129

1 Hour or Less Actions LCO 3.8.2.A - One required offsite source inoperable NOTE: Enter applicable Conditions and Required Actions of LCO 3.8.10, with the required train de-energized as a result of Condition A. →A.1: Declare affected required feature(s) with no offsite power available inoperable immediately OR →A.2.1: Suspend CORE ALTERATIONS immediately AND →A.2.2: Suspend movement of irradiated fuel assemblies immediately AND →A.2.3: Suspend operations involving positive reactivity additions that could result in loss of required SDM or boron concentration immediately AND →A.2.4: Initiate action to restore required offsite power circuit to OPERABLE status immediately

Answer 130

LCO 3.8.2.B One required DG inoperable →B.1: Suspend CORE ALTERATIONS immediately AND →B.2: Suspend movement of irradiated fuel assemblies immediately AND →B.3: Suspend operations involving positive reactivity additions that could result in loss of required SDM or boron concentration immediately AND →B.4: Initiate action to restore required DG to OPERABLE status immediately

Answer 131

→1UT →2UT →XST1 →XST1A →XST2

Answer 132

→nitrogen blanket on oil with pressure between 0.25 and 6.5 psig →regulator maintains tank pressure greater than 0.5 psig →as oil temp changes, density changes and causes nitrogen to flow either into the transformer via a regulator or bleed off via a relief →relief valves in nitrogen bottle cabinet (7# and 7.5#) and on top of xfmr (7.5#)

Answer 133

→1MT1/2 →2MT1/2 →1ST →2ST →XST2A

Answer 134

→Each transformer has a Constant Oil Pressure Preservation System (COPS) Tank mounted above the transformer tank. →A bladder inside the tank is surrounded by oil and vented to atmosphere. →Bladder inflates and deflates to accommodate volume changes due to oil expanding and contracting. →Designed to allow for volume changes associated with oil temp variations from -4° to 230° F. →A pressure vacuum bleeder valve prevents excessive pressure or vacuum

Answer 135

Forced Air/Forced Oil The MTs are only rated for Forced Air/Forced Oil. If all cooling is lost, the operator is directed by the ALM to rapidly reduce turbine load to less than 50% within 30 minutes and to monitor oil (100° C) and winding (130° C) temps.

Answer 136

Natural Circulation through radiator banks and attached fans

Answer 137

The buildup of a static charge in the transformer oil. Can occur when relatively cool oil is circulated through a transformer at high flow rates.

Answer 138

2 sets of coolers with each cooler having a pump and 3 fans

Answer 139

1ST, 2ST, XST2A (All others have deluge.)

Answer 140

→1A1-2, 1A2-2, 1A3-2, 1A4-2, and XA1-1 breakers will trip. (Could cause Rx trip if RCPs are powered from 1ST below 20% power) →Incoming feeder breakers 7970 and 7980 will trip, then re-close when MOAS 8052 opens →All 1ST transformer cooling will stop; MOAS 8052 opens and will not re-close. →Note: XST2 will temporarily lose power on a 1ST LOR resulting in a slow transfer on the U1 1E busses and a BOS actuation

Answer 141

→2A1-2, 2A2-2, 2A3-3, 2A4-2 and XA1-2 breakers will trip (may result in Rx trip if RCPs are powered from 2ST at below 20% power) →Incoming feeder breaker 8075 and 8080 will trip. →All 2ST transformer cooling will stop.

Answer 142

→High speed ground switch 8083 will close →MOAS 8085 will open →1EA1-2, 1EA2-2, 2EA1-1, and 2EA2-1 will trip open. Slow transfer on preferred unit, BOS fires →138 kV switchyard breakers 7030 and 7040 will open →Transformer deluge valve will arm

Answer 143

→MOAS 8012 opens →MOAS 8032 opens →1EA1-1, 1EA2-1, 2EA1-2, 2EA2-2 will trip open. Slow transfer on preferred unit, BOS fires →Feeder breakers 7970 and 7980 will open and then re-close after MOAS 8012 and 8032 open

Answer 144

They only have a Sudden Pressure Relay that generates a Main Generator lockout if activated. This disconnects the transformer from its power source. (A sudden pressure relay is actuated by a sudden pressure increase due to an electrical arc vaporizing oil into gas.)

Answer 145

No. If an additional alarm comes in while there is already a trouble alarm in, the trouble alarm will not reinitiate.

Answer 146

...should not be used to power the RCPs for extended periods due to increased amps in this alignment.

Answer 147

Normal: XST2 Alternate: XST1 Emergency: Diesel

Answer 148

Normal: XST1 Alternate: XST2 Emergency: Diesel

Answer 149

Normal: UTs through main generators Alternate (or unit shutdown): STs

Answer 150

→uB4-1 (preferred) and uB3-1 (alternate) →uD2-1 (preferred) and uD2-2 (alternate)

Answer 151

→uB4-1 (preferred) and uB3-1 (alternate) →125 VDC uD2 input

Answer 152

→22 kV in, 354 kV out →FAO →COPS →sends power to the grid when generator output breakers are closed (xfmr load ↑ as gen load ↑)

Answer 153

→22 kV in (<3.5% of total power output through main generator), 6.9 kV out →FA →inert gas system →non-safeguards buses when above 20% power

Answer 154

→345 kV in, 6.9 kV out →FOA →COPS →non-safeguards buses when below 20% power

Answer 155

→138 kV (XST1/1A) or 345 kV (XST2/2A) in, 6.9 kV out →FOA (XST1, XST2, XST2A) or FA (XST1A) →inert gas →safeguards buses at all times

Answer 156

→two transformers in the 138 kV Switchyard →buildings like warehouses, MSC, AAP& PAP, met tower, CPE, NOSF, sewage treatment facility, LVW discharge path (WM-181s fail closed on loss of power), etc. →refueling equipment like containment elevator, polar crane, refueling communications, etc. (outage power transferred by manual switch in key-locked boxes)

Answer 157

→presence of combustible gas →increased oil/winding temps →weird noises from transformer tank →increased COPS tank level →increased pressure

Answer 158

-RCP 1 -Circ Water Pump 1 -Heater Drain Pump 1

Answer 159

-RCP 2 -Circ Water Pump 2 -Heater Drain Pump 2

Answer 160

-RCP 3 -Circ Water Pump 3 -TPCW Pump 1 -Condensate Pump 1

Answer 161

-RCP 4 -Circ Water Pump 4 -TPCW Pump 2 -Condensate Pump 2

Answer 162

-Vent Chillers 5 & 6 -Vent Chillers 7, 8 & 9 -480V AC Bus XB1

Answer 163

Y winding - normal X winding - alternate (X is eXtra)

Answer 164

XA1-2: normal XA1-1: alternate (backwards from normal)

Answer 165

1EA1-1, 1A1-1, etc. are normal alternates are -2 breakers

Answer 166

6.9 kV - low impedance 480 V & EDG - high impedance

Answer 167

...the Synchronizing Switch must be in the ON position for that breaker.

Answer 168

As soon as alternate supply breaker is closed, the normal supply breaker opens, and vice versa. DOES NOT apply to the EDG breaker.

Answer 169

When EDG in parallel with associated Safeguards bus (i.e. for testing) and an SI occurs, then the EDG breaker automatically opens, the EDG continues to run, and the bus will be powered by its preferred source.

Answer 170

-0.25 seconds -40° phase angle -If alternate breaker doesn't close in 0.25 sec, then slow transfer (dead bus transfer) will occur.

Answer 171

-Voltage drops and normal breaker opens. -As voltage continues to drop (approximately 70% of normal voltage) the BOS will actuate the Operator and Automatic Lockouts (OL and AL) -As voltage continues to drop (approximately 30% of normal voltage) at this same time a 1 sec TDPU timer starts in order to start the EDG, a 0.3 sec TDPU timer starts to unload the bus and a permissive is set to allow the alternate power supply breaker to close.

Answer 172

Protects AC system from sustained voltage degradation, specifically the class 1E motors are protected from potential damage due to low voltage/high current conditions.

Answer 173

-If voltage is not returned to reset value within 1.9 sec (61.9 sec after initiating event) then the alternate feeder breaker is tripped open and/or blocked from closing thus causing a EDG start and sequencer -In the event a SI occurs within the first 8 seconds timer is inserted into the circuit causing the normal feeder breaker to trip open sooner. If a safety injection is initiated during the interval from 7.5 seconds to 46 seconds, the trip cycle occurs immediately.

Answer 174

-PD Pump -Containment Recirculation Fans -CRDM Vent Fans -PZR Group C Heaters -The components do not auto restart or continue to stroke when power is restored unless an auto signal is present for that component.

Answer 175

-Bus Undervoltage 4830V (0.5 Second Time Delay) -Overcurrent (Hot Loop and Cold Loop positions) -Locked Rotor/Failure to Accelerate (Disabled 30 seconds after RCP Start) -Under Frequency 57.2 Hz (0.1 Second Time Delay) -Thermal Overloads

Answer 176

Located on each breaker face allows the operator to select between a lower or higher overcurrent protection setpoint. This allows the operation of the RCP during COLD LOOP condition to have a higher overcurrent protection setpoint to compensate for the increased current draw due to the higher water density at low temperatures.

Answer 177

-Provide an alarm function only. -49 Relay is thermal overload.

Answer 178

To reset a 74 relay on the non-safety 6.9KV breakers, a key-operated reset mechanism at the breaker must be turned and pushed in. (Safety-related loads will auto-reset the 74 relay after the condition clears)

Answer 179

-86-1 (one good phase) -86-2 (two good phases) -EDG can bypass 86-2 to supply the bus if placed in Emergency Start (cannot bypass 86-1)

Answer 180

6480-7150 V (TS 3.8.1 and associated SRs)

Answer 181

-lights off when ready to sync at 12:00 -lights get brighter as it gets farther from 12:00 (measures the voltage difference between positions, so farther out = higher voltage = brighter lights)

Answer 182

Two channels per bus for the Preferred offsite source bus undervoltage function inoperable →Restore one channel per bus to OPERABLE status within 1 hour OR →Declare the Preferred offsite source inoperable within 1 hour Two channels per bus for the Alternate offsite source bus undervoltage function inoperable →Restore one channel per bus to OPERABLE status within 1 hour OR →Declare the Alternate offsite source inoperable within 1 hour Two channels per bus for the 6.9 kV bus loss of voltage function inoperable →Restore one channel per bus to OPERABLE status within 1 hour OR →Declare the affected AC emergency buses inoperable within 1 hour Two channels per bus for one or more degraded voltage or low grid undervoltage function inoperable →Restore one channel per bus to OPERABLE status within 1 hour OR →Declare both offsite power source buses inoperable within 1 hour One or more Automatic Actuation Logic and Actuation Relays trains inoperable →Restore train(s) to OPERABLE status within 1 hour Required Action and associated Completion Time not met →Enter applicable Condition(s) and Required Action(s) for the associated DG made inoperable by LOP DG start instrumentation immediately

Answer 183

Train A and Train B AC, DC, and AC vital bus electrical power distribution subsystem shall be OPERABLE (Modes 1-4) One AC electrical power distribution system inoperable →restore AC electrical power distribution subsystem to OPERABLE status within 8 hours Two trains with inoperable distribution subsystems that result in a loss of safety function →enter TS LCO 3.0.3 immediately

Answer 184

The necessary portion of the Train A or Train B AC, DC, and AC vital bus electrical power distribution subsystems shall be OPERABLE to support one train of equipment required to be OPERABLE. (Modes 5-6). 1 hour or less, actions: One or more required AC, DC, or AC vital bus electrical power distribution subsystems inoperable →Declare associated supported required feature(s) inoperable OR →Suspend CORE ALTERATIONS immediately AND →Suspend movement of irradiated fuel assemblies immediately AND →Suspend operations involving positive reactivity additions that could result in loss of required SDM or boron concentration immediately AND →Initiate actions to restore required AC, DC, and AC vital bus electrical power distribution subsystems to OPERABLE status immediately AND →Declare associated required residual heat removal subsystem(s) inoperable and not in operation immediately

Answer 185

→Modes 1-4 →two offsite sources must be available →two DGs must be available →automatic load sequencers for Train A and Train B Two offsite sources can be satisfied by: →"Stephen Parker" - 138 kV Stephenville with 345 kV Parker #1 OR Parker #2 →"Number 2 Bends" - 138 kV Carmichael Bend with any 345 kV line except for Mitchell Bend (138 kV Stephenville line crosses all 345 kV lines other than Parker 1 and 2)

Answer 186

→Modes 5 & 6 →one offsite source must be available →one DG must be available

Answer 187

1 Hour or Less Actions →LCO 3.8.1.A One required offsite source inoperable: SR 3.8.1.1 (same as OPT-215) with completion time of one hour AND once per 8 hours thereafter →LCO 3.8.1.B One required DG inoperable: SR 3.8.1.1 (same as OPT-215) with completion time of one hour AND once per 8 hours thereafter →LCO 3.8.1.C Two required offsite circuits inoperable: restore one required offsite circuit to operable within 24 hours →LCO3.8.1.H Three or more required AC sources inoperable: enter TS LCO 3.0.3 immediately

Answer 188

1 Hour or Less Actions LCO 3.8.2.A - One required offsite source inoperable NOTE: Enter applicable Conditions and Required Actions of LCO 3.8.10, with the required train de-energized as a result of Condition A. →A.1: Declare affected required feature(s) with no offsite power available inoperable immediately OR →A.2.1: Suspend CORE ALTERATIONS immediately AND →A.2.2: Suspend movement of irradiated fuel assemblies immediately AND →A.2.3: Suspend operations involving positive reactivity additions that could result in loss of required SDM or boron concentration immediately AND →A.2.4: Initiate action to restore required offsite power circuit to OPERABLE status immediately

Answer 189

LCO 3.8.2.B One required DG inoperable →B.1: Suspend CORE ALTERATIONS immediately AND →B.2: Suspend movement of irradiated fuel assemblies immediately AND →B.3: Suspend operations involving positive reactivity additions that could result in loss of required SDM or boron concentration immediately AND →B.4: Initiate action to restore required DG to OPERABLE status immediately

Answer 190

thermal overload trips

Answer 191

generator anti-motoring operates on a predetermined value of power in reverse direction

Answer 192

Rated Non-1E, Train C, with regards to nuclear safety, but supply loads required by Technical Specifications. The main loads are: →radiation monitoring →fire protection →alarm annunciation equipment

Answer 193

Two UPS HVAC System Trains shall be OPERABLE (Modes 1-4) One UPS HVAC System train inoperable →verify the affected UPS & Distribution Room is supported by an OPERABLE UPS A/C Train immediately AND →restore the inoperable UPS HVAC train to OPERABLE status within 30 days

Answer 194

The required Train A and Train B inverters shall be OPERABLE (Modes 1-4) NOTE: Inverters may be disconnected from one DC bus for ≤ 24 hours to perform an equalizing charge on their associated common battery, provided: →The associated AC vital bus(es) are energized; and →All other AC vital buses are energized from their associated OPERABLE inverters

Answer 195

The Train A or Train B inverters shall be OPERABLE to support one train of the onsite Class 1E AC vital bus electrical power distribution subsystems required by LCO 3.8.10, "Distribution Systems - Shutdown." (Modes 5-6) 1 hour or less, actions: One or more required inverters inoperable →Declare affected required feature(s) inoperable immediately OR →Suspend CORE ALTERATIONS immediately AND →Suspend movement of irradiated fuel assemblies immediately AND →Suspend operations involving positive reactivity additions that could result in loss of required SDM or boron concentration immediately AND →Initiate action to restore required inverters to OPERABLE status immediately

Answer 196

Train A and Train B AC, DC, and AC vital bus electrical power distribution subsystem shall be OPERABLE (Modes 1-4) One AC electrical power distribution system inoperable →restore AC electrical power distribution subsystem to OPERABLE status within 8 hours Two trains with inoperable distribution subsystems that result in a loss of safety function →enter TS LCO 3.0.3 immediately

Answer 197

The necessary portion of the Train A or Train B AC, DC, and AC vital bus electrical power distribution subsystems shall be OPERABLE to support one train of equipment required to be OPERABLE. (Modes 5-6). 1 hour or less, actions: One or more required AC, DC, or AC vital bus electrical power distribution subsystems inoperable →Declare associated supported required feature(s) inoperable OR →Suspend CORE ALTERATIONS immediately AND →Suspend movement of irradiated fuel assemblies immediately AND →Suspend operations involving positive reactivity additions that could result in loss of required SDM or boron concentration immediately AND →Initiate actions to restore required AC, DC, and AC vital bus electrical power distribution subsystems to OPERABLE status immediately AND →Declare associated required residual heat removal subsystem(s) inoperable and not in operation immediately

Answer 198

uC14 supplies DRPI, normally powered from uC1 but can be fed from uC4 normal and alternate power supplies mechanically interlocked

Answer 199

The spare inverter can be supplied from either train related DC bus or dirty power. It can supply power to any of the 4 train related Instrument buses. Through the appropriate inverters being replaced via removing from service a static transfer switch on the inverter itself.

Answer 200

Inoperable →on a loss of offsite power the sequencers will de-energize. →also on a loss of power to these panels the EDG will trip if running normally and not start in auto or manual due to 86-2 →it will however start in Emergency Manual or SI.

Answer 201

Unit 2 Only Loss of 2EC1 or 2EC2 will result in: →loss of Water Hammer interlocks, resulting in →Feedwater Isolation, and requiring a →Manual Reactor trip (Unit 1 doesn't have water hammer interlocks because of SG replacement)

Answer 202

→one or both cabinet cooling fans not running →high ambient temperature →component failure leading to high cabinet temperatures

Answer 203

→DC input voltage ≤105 VDC →AC output voltage drops to 50% normal value (~59 VAC) →Output load current rises to 120% of rated value (~175 Amps)

Answer 204

→Plant Computer →MFP and Condensate Polishing Digital Controls →SSII →AMSAC →Electronic Kilowatt-Hour Counter Panel

Answer 205

Supplies lighting in areas essential to the safe shutdown of the plant (ECB, Aux Bldg, U1 and U2 SFGDs)

Answer 206

Provided as a backup to AC lighting systems in locations where safety related functions are performed and for personnel safety in access and egress routes In areas where the DC Emergency Lighting is provided, 8-hour rated battery packs or station batteries are provided

Answer 207

Power to the lights on masts is split between Train A and B so that on a loss of a single train only half the lights are lost

Answer 208

If normal power is lost (1E), an automatic transfer switch in each flasher controller will energize ALL the lamps from 125 VDC (XD2-2). (bypasses photocell, flasher and spare lamp transfer relays)

Answer 209

→The individual distribution panels must be powered from an inverter which is supplied from a 125 VDC bus. →When the swing inverter is used it must be supplied from the same DC bus as the inverter it is replacing. →The off-going inverter must be removed from the DC bus prior to placing the swing inverter on the same DC bus.

Answer 210

→BO →SI →SI Sequencer →CR Emergency Start H/S →Local Emergency Start H/S (with RLMS in Local)

Answer 211

→CR Normal Start H/S →Local Normal Start H/S (with RLMS in Local)

Answer 212

→Engine will rotate with air until > 200 rpm or pressure in both receivers < 150 lbs. →Emergency start blocked if air receivers < 150 lbs. (can still try normal start below 150 lbs)

Answer 213

Automatic protective features are disabled except: —>mechanical overspeed (115%) —>generator differential (86-1 lockout).

Answer 214

→RLMS to LOCAL →CR DG Emergency HS to STOP →RLMS to REMOTE

Answer 215

→AVR will maintain voltage within 0.5% of setpoint, normal mode of operation →If in isochronous mode and high voltage (7100 V) occurs, then AVR replaced with Magnetics →If not in AVR mode, then the DG is INOP

Answer 216

→Modes 1-6 for both →FO Storage Tank Min volume 86,000 gal for 7 day supply →FO Storage Tank Min Volume 74,600 gals for 6 day supply

Answer 217

Tech Spec: ≥180 lbs Admin: ≥184 lbs Alarm: < 210 lbs

Answer 218

1440 gal (37" or 62%) Note: EDG will actually run for ~2.8 hours based on 8-12 gpm fuel use

Answer 219

1) Pre-Lube Pump 2) Aux LO Pump 3) Aux JW Pump 4) Air Compressors 5) Waste Drip Tank Pump 6) FO Booster Pump 7) Keep Warm Pump

Answer 220

1) Pre-Lube Pump 2) Aux LO Pump 3) Aux JW Pump 4) Air Compressors

Answer 221

1) *Hi bearing Temperature ≥ 228°F* 2) *Return Line Lube Oil Temperature ≥ 200°F* 3) Lube Oil Pressure at Turbochargers ≤ 15 psig (Left Bank or Right Bank) 4) Lube Oil Pressure at header ≤ 30psig 5) Hi Vibration on a Turbocharger (Left or Right Bank) 6) Engine Hi Vibration 7) Crankcase Hi pressure ≥ 1.5 psig 8) JW Return ≥ 200°F First two always active. The rest are on a 60 sec time delay after normal start before active.

Answer 222

1) Reverse Power (86-2) 2) Loss of Field (86-2) 3) Negative Sequence (86-2) 4) Time Overcurrent (86-2) 5) Ground Overcurrent (86-2) 6) Over excitation (86-2) 7) Neutral Voltage (Gen ground) (86-2) 8) High Gen Bearing Temp > 190°F (86-2)

Answer 223

Phase to Phase Fault or Phase Differential (86-1) Mechanical Overspeed (115%) (must be manually reset at overspeed pivot lever)

Answer 224

→SI and either normal or alternate feeder breaker are closed. →86-2 for the bus or generator without an emergency start. →86-1 →Engine shutoff cylinders are pressurized to shutdown the engine →Breaker HS to TRIP or PULLOUT

Answer 225

→Breaker control is transferred with normal or alternate feeder breaker closed. →86-2 for the bus or generator without an emergency start. →86-1 →Engine shutoff cylinders are pressurized to shutdown the engine →Breaker HS to TRIP or PULLOUT If breaker is tripped from the RSP must transfer control back to the CR and then back before the breaker can be reclosed from the RSP, because of anti-pumping circuit

Answer 226

Each EDG must be able to operate for 7 days at rated speed and voltage with full load, after which it must still retain its 10 second start and load capability.

Answer 227

Normal Start: valves close 5 secs after start signal or when engine speed reaches >200 rpm

Answer 228

Emergency Start: valves will not close until receiver pressure is < 150 psig or engine speed ≥ 200 rpm (starting air banks are supplied from separate receivers)

Answer 229

Unit 1: Engine Speed > 200 rpm JW Pressure ≤ 10 psig Unit 2: Engine Speed > 200 rpm JW Pressure ≤ 7 psig

Answer 230

READY TO LOAD (red): →engine speed ≥ 425 rpm →generator output voltage ≥ 6210 VAC.

Answer 231

Minimize running the EDG unloaded → ≤ 5 minutes recommended → if operated for >30 mins unloaded, then machine must be loaded to remove any unburned fuel in the exhaust system →when loaded, should run at minimum of 3.5 MW for 60 mins

Answer 232

Each EDG starts from standby and achieves: →steady state voltage between 6480 V and 7150 V →frequency between 58.8 Hz and 61.2 Hz

Answer 233

→if parallelled, MW will increase →if carrying the bus, speed (frequency) will increase

Answer 234

...open the output breaker to prevent damage to the EDG.

Answer 235

...results in picking up reactive load on the EDG. Lower it by reducing voltage.

Answer 236

Turn the Sync Switch ON!!!

Answer 237

→Normal: won't restart in Normal for 2 minutes after shutdown →Emergency: taking H/S to stop will stop EDG, but it will restart once < 200 rpm due to emergency start signal being locked in

Answer 238

→ >106.9°F - all 4 required → >99.4°F - 3 of 4 required → >76.7°F - 2 of 4 required → ≤76.7°F - only 1 required

Answer 239

Normal: single pump starts at 44" and stops at 53" (auto-swaps for next start) Abnormal: both pumps start at 42" and both stop at 53" Lo-Lo Alarm comes in at 41"

Answer 240

Engine Speed > 200 rpm AND low pressure ≤ 30 lbs (auto stops on high pressure ~ 110 lbs)

Answer 241

a train related DC bus

Answer 242

max position

Answer 243

MCCs inside the diesel rooms →uEB3-4 (Train A) →uEB4-4 (Train B)

Answer 244

TS 3.8.1 - Requires OPT-215 when declaring an EDG inoperable (Modes 1-4) TS 3.8.2 - one required offsite source and one required DG operable (Modes 5-6); if not met, check 6.9 kV and 480 VAC flashcard deck for actions TS 3.8.3 - 7 day fuel oil and lube oil requirements, 48 hours to complete, if not met then declare EDG inoperable TR 13.8.31 - AC Sources (Diesel Generator Requirements) - This TR LCO contains the surveillance requirements and associated actions for DG surveillances that are not absolutely necessary for EDG OPERABILITY, but still a good idea to be performed. It includes certain 18 month and 10 year TRS’s that send you to the applicable Tech Spec if not met.

Answer 245

No field flash, no start signals. Won’t start on Normal or Emergency, locally or remotely. If already running, can’t be stopped via handswitch. Must use local pneumatic trip button.

Answer 246

Mechanical interlock on DC bus end prevents aligning oncoming and off-going BCs.

Answer 247

Overcurrent

Answer 248

...the battery charger loses power, usually from a loss of the bus.

Answer 249

"uD1, Turbine Fun" →EHC Controller →Extended Turbine Protection Cabinet (Also includes auto turbine tester cabinet, TSE, seal steam controller, vibration monitoring, electrical generator protection cabinet, hydraulic control equipment rack)

Answer 250

"uD2 does its duty (emergency pumps)" →Main Turbine Emergency LO Pump (250VDC) →MFP Emergency LO Pumps (250VDC) →Main Generator Emergency Seal Oil Pump (250VDC) →uD2-1, uD2-2, uD2-3 →XD2-1 (U1 preferred source), XD2-2 (U1 preferred source), XD2-3 (U1 preferred source)

Answer 251

"uD3, RCP" →Plant Computer through IV uC5, IV uC6 →DC Control power to RCP breakers via uD3-1 (RCP breakers provide primary overcurrent protection for Containment Penetration with Normal and Alternate feeder breakers on the associated bus acting as secondary overcurrent protection) →MFP Digital Controls →Condensate Polishing Digital Controls

Answer 252

For a DC Bus to be considered operable it must have the following: →Operable battery charger connected to the bus (each bus has installed spared) →Operable battery connected to the bus →Maximum of 2 inverters per DC Bus →Batteries are rated for 4 hours at full load

Answer 253

1200 amp-hour rating 150 amps for 8 hours

Answer 254

→uD1 = MCC uB1-3, supplies positive bus →uD2 = MCC uB2-3, supplies negative bus →uD3 = MCC uB2-1, supplies positive bus →uD4 = MCC uB4-1, supplies negative bus

Answer 255

To limit potential H2 ignition.

Answer 256

NOTE: Effects are similar for Loss of Train "B". →Train A Rx Trip and Bypass Breaker shunt trips not available/ UV available →Feedwater valves fail closed →Train A EDG will not start and cannot flash field/ can't stop from CR if running →Steam Dumps fail closed →TDAFWP speed indication lost →PZR Aux Spray fails closed →PORV 455A fails closed →VCT Level control lost →Letdown isolates →SGBD and Sample valves close →TDAFWP Train Steam Supply fails open →Train A MDAFWP flow control and recirc valves fail open →Loss of control power to Train A 6.9kV and 480 LC breakers

Answer 257

→Float: maintains battery at capacity →Equalize: equalizes voltage across all cells in battery

Answer 258

→For a battery to be considered operable then its Float Voltage must be between 128 VDC and 140 VDC. →Placing a charger in Equalize does not inop the battery if its float voltage was within spec initially and the equalize voltage does not exceed the upper limit

Answer 259

"Dimmer is grimmer." The side with the dimmer light contains the ground.

Answer 260

→BCuED1-2 →BCuED2-2 →BCuED3-1 →BCuED4-1 →BCuD4 (Plant Support AC, a.k.a. outage power, can't be used in Modes 1-4 because Safeguards equipment on outage power is NOT considered OPERABLE.)

Answer 261

→amber →green →red

Answer 262

→field flash →the diesel won't start on either normal or emergency start signals →if diesel already running, it could no longer be remotely shutdown from CR

Answer 263

Panels: →uPC1 →uPC3 →uEC1 →uEC5

Answer 264

Panels: →uPC2 →uPC4 →uEC2 →uEC6

Answer 265

The key can't be removed until the mechanical bar is in the upward blocking position.

Answer 266

...prevent the MSIVs from re-opening →a steam leak in the MSIV room(s) could cause the hydraulic dump solenoid valves to fail closed →as a result, if the oil pump were to supply oil to the MSIV in those conditions, the valve would open