Section 1 Review

Question 1

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

Answer 1

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

Question 2

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

Answer 2

Main control center and local control centers 

Question 3

List the equipment and compartments protected by CO2

Answer 3

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

Question 4

State the concerns caused by low nitrogen system pressure alarm

Answer 4

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

Question 5

Explain how each firewater pond level is controlled

Answer 5

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

Question 6

State the normal operating pressure for firewater system

Answer 6

150 psi 

Question 7

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

Answer 7

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

Question 8

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

Answer 8

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

Question 9

Defined the term step up transformer

Answer 9

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

Question 10

State the operating units at the oyster Creek site

Answer 10

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

Question 11

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

Answer 11

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

Question 12

List the hazards associated with clearing, electrical switch gears

Answer 12

Arc flash, shock, grounding, pinchpoints 

Question 13

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

Answer 13

RTD resistance temp detectors 

Question 14

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

Answer 14

Power dispatch extension, 2575 

Question 15

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

Answer 15

Test position, connected, disconnected

Question 16

State the approved electrical protective equipment required when operating switch gears

Answer 16

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

Question 17

State who may issue an ESWP at the Unit eight Plant

Answer 17

Train documented personnel by I&E supervisor 

Question 18

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

Answer 18

Keeps out air and moisture

Question 19

List the two main purposes of a transformer

Answer 19

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

Question 20

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

Answer 20

Top of transformer and used to relief, gas pressure 

Question 21

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

Answer 21

Power, dispatch

Question 22

List the purpose of protective relay

Answer 22

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

Question 23

List the purpose of an 86 lockout relay

Answer 23

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

Question 24

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

Answer 24

OC 882 local 

Question 25

List the major components of the 125V DC system

Answer 25

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

Question 26

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

Answer 26

MCC switchgear and 480 VAC 

Question 27

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

Answer 27

Hydrogen

Question 28

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

Answer 28

SF-6 sulfur hexa fluoride

Question 29

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

Answer 29

Power, dispatch

Question 30

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

Answer 30

Equipment owner

Question 31

List the equipment that utilizes 5KV in unit eight

Answer 31

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

Question 32

Explain the purpose of five KV tiebreakers

Answer 32

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 

Question 33

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

Answer 33

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

Question 34

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

Answer 34

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. 

Question 35

List three types of  alarm displays in the base alarm window

Answer 35

Alarm history, alarm list, acknowledged alarm 

Question 36

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

Answer 36

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. 

Question 37

Name five trips that will shut down boiler feed water pumps

Answer 37

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

Question 38

Explain the main purposes of redundancy

Answer 38

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

Question 39

State what solution is used to calibrate a pH analyzer

Answer 39

Buffer solution

Question 40

State what is actually measured by a pH analyzer

Answer 40

Acidity and alkalinity of a solution 

Question 41

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

Answer 41

Rotor field windings 

Question 42

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

Answer 42

By the use of brushes and slip rings on shaft 

Question 43

State the location of breaker L840

Answer 43

OC 872 

Question 44

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

Answer 44

SF-6 Selalexa fluoride 

Question 45

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

Answer 45

Only when deenergized 

Question 46

Explain the term reverse power

Answer 46

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

Question 47

State how the generator field receives the DC voltage while rotating

Answer 47

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 

Question 48

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

Answer 48

 OC883 local/OC872

Question 49

State how electricity is produced in the generator

Answer 49

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

Question 50

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

Answer 50

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

Question 51

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

Answer 51

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

Question 52

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

Answer 52

LHC eight

Question 53

Explain the purpose of a flag on a relay

Answer 53

Shows relay has been activated or tripped

Question 54

Explain what must be done before any relay flag is reset

Answer 54

Notify Control Center, log it in, call power dispatch 

Question 55

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

Answer 55

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

Question 56

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

Answer 56

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

Question 57

List the power plant source of 90 pound steam

Answer 57

HRU, 90 pound extraction, PRV’s

Question 58

Name two sources of 1550 pound steam to 740 reduction

Answer 58

East and West 1550 to 740 PRV‘s 

Question 59

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

Answer 59

600,000 pounds per hour

Question 60

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

Answer 60

LHC9 740-300

Question 61

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

Answer 61

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

Question 62

Describe the internal design of D 8001ABCD

Answer 62

Lined carbon tanks with distribution headers and cation beds 

Question 63

State the function of TK 8003

Answer 63

Neutralization tank used to neutralize water before sending to outfall 

Question 64

Describe the internal design of TK 8003

Answer 64

Open to atmosphere tank lined carbon tank with agitator 

Question 65

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

Answer 65

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

Question 66

Explain the difference between padding with nitrogen and purging with nitrogen

Answer 66

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

Question 67

Locate the continuous blow downs on each drum and ovation graphic

Answer 67

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

Question 68

State the function of the V8001 and V8002

Answer 68

V8001 new oil V8002 used oil

Question 69

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

Answer 69

Could damage rotating equipment, bearings or plug lube coolers 

Question 70

Describe why the oily water separator will not process ethylene glycol

Answer 70

Ethylene glycol blends with water soluble 

Question 71

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

Answer 71

Block in the leak or shut down the system

Question 72

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-

Answer 72

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

Question 73

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- 

Answer 73

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

Question 74

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

Answer 74

160 to 80 psi