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Power 8 Utilities > Section 1 Review > Flashcards

Section 1 Review Flashcards

1
Q

Briefly described the three major components of the unit eight fire protection system 

A

Fire zones, defines the specific fire protection needed for the area.

Fire area, associated with a building or piece of equipment.

Main fire protection control system, system that controls the CO2, alarms, and deluge

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2
Q

Where are the main and remote auxiliary fire protection panels located at unit unit eight

A

Main control center and local control centers 

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3
Q

List the equipment and compartments protected by CO2

A

GT 81,82 and 83 load compartment, turbine compartment, auxiliary compartment 

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4
Q

State the concerns caused by low nitrogen system pressure alarm

A

Nitrogen is used to activate Deluge system on ST 84, transformers and cable trays and North tank farm control valves. 

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5
Q

Explain how each firewater pond level is controlled

A

One-manual gates, and float system
Two-canal level
Three- to be pumped from pond one or two 

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6
Q

State the normal operating pressure for firewater system

A

150 psi 

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7
Q

List the six main AC voltages that will be produced and utilized by unit unit eight

A

15 KV, 18kv, 5kv, 120V, 240V, 480V

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8
Q

List the 6 main AC voltages that will be produced and utilized by unit unit eight

A

5kv, 15kv, 18kv, 480v, 240v, 120v

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9
Q

Defined the term step up transformer

A

Takes 15 KV and steps it up to 138 KV low to high

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10
Q

State the operating units at the oyster Creek site

A

CRW, LHC9, LHC8, phenol, PDH, vinyl, Power 8, braskem

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11
Q

State what services is provided by B breaker on 15 KV system

A

It is a service breaker that reduces voltage to supply plant equipment 

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12
Q

List the hazards associated with clearing, electrical switch gears

A

Arc flash, shock, grounding, pinchpoints 

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13
Q

List the device that is used to measure, bearing and winding temperatures in a high voltage pump motor

A

RTD resistance temp detectors 

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14
Q

State whom must be contacted before operating or clearing any 15 KV switch gear

A

Power dispatch extension, 2575 

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15
Q

State the three operating positions that a five KV breaker can indicate while in its housing

A

Test position, connected, disconnected

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16
Q

State the approved electrical protective equipment required when operating switch gears

A

Flash hood, flash suit, gloves, hardhat, side shields

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17
Q

State who may issue an ESWP at the Unit eight Plant

A

Train documented personnel by I&E supervisor 

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18
Q

State the main purpose of a positive nitrogen purge on a transformer

A

Keeps out air and moisture

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19
Q

List the two main purposes of a transformer

A

Steps up or down voltages also it’s used to isolate power from source

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20
Q

List, the purpose and location of the pressure relief device used on a transformer

A

Top of transformer and used to relief, gas pressure 

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21
Q

Who will issue an order to Raise or lower the settings on the load tap chargers used when the 15 KV 138 KV transformers 

A

Power, dispatch

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22
Q

List the purpose of protective relay

A

Used to protect personnel from electrical shock during abnormal conditions, and used to protect equipment

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23
Q

List the purpose of an 86 lockout relay

A

Trips/alarms and locks out more than one breaker. It has to be manually reset when electrically tripped. 

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24
Q

State the building location of the two 125 V DC distribution buses

A

OC 882 local 

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25
Q

List the major components of the 125V DC system

A

2 125 VDC buses, two sets of batteries, three battery chargers 

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26
Q

List the primary voltage for the chargers and the location where power originates from

A

MCC switchgear and 480 VAC 

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27
Q

State the type of cooling medium used to cool the stator windings of each generator

A

Hydrogen

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28
Q

State the type of gas used for arc suppression in the 15 KV breaker

A

SF-6 sulfur hexa fluoride

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29
Q

List whom may issue in order to raise or lower the tap chargers on the 15 KV 138KV distribution transformer

A

Power, dispatch

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30
Q

List who will obtain a switching request for the 15 KV generator before the L breaker can be closed to connect to the tie line system

A

Equipment owner

31
Q

List the equipment that utilizes 5KV in unit eight

A

Circulation pumps, high-pressure boiler feed water pumps, 5KV to 480 V transformers, starting motors 

32
Q

Explain the purpose of five KV tiebreakers

A

Used to tie buses together when our transformer is an outage, or when under voltage is detected on a transformer, and when a transformer needs to be isolated 

33
Q

List the PPE required when working on the 48 V DC battery system

A

Mono goggles, apron, gloves, boots, face shield, baking soda, or water for neutralizing solution 

34
Q

State the purpose for using a job procedure to place the UPS and service and take it out of service

A

To ensure nothing is missed and the UPS system is put back online properly. Not doing so can result in trip turbin, or damage to equipment. 

35
Q

List three types of  alarm displays in the base alarm window

A

Alarm history, alarm list, acknowledged alarm 

36
Q

State why a technician should investigate and clear a ground when they receive a ground alarm

A

The grounding system is to remove any ground faults. If one ground comes in and another comes in before the first is reset, it could cause high current, resulting in damage to equipment/personal injury. 

37
Q

Name five trips that will shut down boiler feed water pumps

A

Low lube oil pressure, low feed water flow, high vibration, hihi thrust bearing temp, emergency stop switch 

38
Q

Explain the main purposes of redundancy

A

Back up in case one fails, arbitrary voting process of the computer 

39
Q

State what solution is used to calibrate a pH analyzer

A

Buffer solution

40
Q

State what is actually measured by a pH analyzer

A

Acidity and alkalinity of a solution 

41
Q

State which part of the electrical generator at unit eight contains the DC magnetic field

A

Rotor field windings 

42
Q

State how the generator rotor receives its DC voltage when rotating at 3600 RPM

A

By the use of brushes and slip rings on shaft 

43
Q

State the location of breaker L840

A

OC 872 

44
Q

State the type of gas used in 18 KV breaker for arc suppression

A

SF-6 Selalexa fluoride 

45
Q

State when the inspection plates may be removed from the isolated phase bus ducts

A

Only when deenergized 

46
Q

Explain the term reverse power

A

When energy starts to flow into the generator instead of out of it, the generator starts to motorize 

47
Q

State how the generator field receives the DC voltage while rotating

A

Rotor receives the DC voltage from a diode ring. the DC voltage is delivered to the field windings of the generator through a set of rotor leads 

48
Q

State the building location that houses the exciter cubicle for steam turban ST 84

A

 OC883 local/OC872

49
Q

State how electricity is produced in the generator

A

The turbine spins the shaft which rotates the armature. The armature spins inside the stator, this produces electrical current through the copper wiring.

50
Q

List the utilities on the utility system that will be entered into Unit 8

A

Clarified river water, HCL, condensate, caustic, fuelgas, nitrogen, potable, water, firewater 

51
Q

List the utilities on the utility system that will be exiting unit eight

A

Condensate, 90 pound steam, 300 pound steam, 740 pound steam, 1550 pound steam, and electricity 

52
Q

List the unit that will receive 1550 pound steam from unit eight

A

LHC eight

53
Q

Explain the purpose of a flag on a relay

A

Shows relay has been activated or tripped

54
Q

Explain what must be done before any relay flag is reset

A

Notify Control Center, log it in, call power dispatch 

55
Q

State the reason why an accurate calibration is necessary for every metering device

A

To provide an accurate indication of process variables, and provide accurate accountability of utilities used 

56
Q

Explain what happens with the PRV system in the event the steam turbine trips 

A

The PRV’s will open and control pressure of steam header until steamer is back up 

57
Q

List the power plant source of 90 pound steam

A

HRU, 90 pound extraction, PRV’s

58
Q

Name two sources of 1550 pound steam to 740 reduction

A

East and West 1550 to 740 PRV‘s 

59
Q

What is the flow capacity of the 1550 to 740 reduction station?

A

600,000 pounds per hour

60
Q

What plant does the 740 pound header supply? What is the pressure reduced to when it reaches its destination?

A

LHC9 740-300

61
Q

Why must we notify industrial gases before cutting back on 740 pound steam?

A

So they can cut back their process we notify industrial gases in plant a

62
Q

Describe the internal design of D 8001ABCD

A

Lined carbon tanks with distribution headers and cation beds 

63
Q

State the function of TK 8003

A

Neutralization tank used to neutralize water before sending to outfall 

64
Q

Describe the internal design of TK 8003

A

Open to atmosphere tank lined carbon tank with agitator 

65
Q

State the alarms associated with the following nitrogen, potable, water, sewer, and river water

A

Nitrogen- low pressure,
potable water- pump status low/high pressure,
sewer- high-level D-100
river water- low pressure

66
Q

Explain the difference between padding with nitrogen and purging with nitrogen

A

Nitrogen padding- constant flow of nitrogen to a tank or vessel, to keep out oxygen
Nitrogen purging- trying to remove moisture 

67
Q

Locate the continuous blow downs on each drum and ovation graphic

A

Blue box on right side of screen on LP and HP drum

68
Q

State the function of the V8001 and V8002

A

V8001 new oil
V8002 used oil

69
Q

Describe the hazards of pumping contaminated lube oil back into the turbine reservoir

A

Could damage rotating equipment, bearings or plug lube coolers


70
Q

Describe why the oily water separator will not process ethylene glycol

A

Ethylene glycol blends with water soluble 

71
Q

There is a leak on the chilled waterline just before it goes into OC 802’s air handler state your action

A

Block in the leak or shut down the system

72
Q

List the parameters for the following sample results.
Cooling tower pH-
Cooling tower conductivity-
High-pressure boiler pH-
High pressure boiler conductivity-
Wastewater total suspended solids-

A

7.5-7.8
Less than 4500
9.1-9.5
30-150
0-50

73
Q

Explain the purpose and or function of the nitrogen being used on the following equipment
V8001 new oil tank-
Unit 8 fuel gas area-
P-8101A hp boiler feed water pump- T-81 transformer-
ST84 lube oil deluge-
GT-81 hydrogen cabinet-
Combustion monitors- 

A

Isolation pad
Purge
Isolation pad
Isolation pad
Deluge dump
Cabinet purge
Purge

74
Q

What is the nitrogen pressure before and after unit eight metering station?

A

160 to 80 psi

Power 8 Utilities (1 decks)

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