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ILOT Study Decks LC32 > Systems Exam 1 - Print Reading > Flashcards

Systems Exam 1 - Print Reading Flashcards

1
Q

What does this relay or contact do?

23

A

temperature control device

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2
Q

What does this relay or contact do?

25

A

synchronizing check

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3
Q

What does this relay or contact do?

27

A

undervoltage

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4
Q

What does this relay or contact do?

33

A

position switch
(detects position of something)

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5
Q

What does this relay or contact do?

42

A

running circuit breaker
(480V power source to motor)

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6
Q

What does this relay or contact do?

49

A

thermal overload relay

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7
Q

What does this relay or contact do?

50

A

instantaneous overcurrent

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8
Q

What does this relay or contact do?

51

A

time overcurrent

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9
Q

What does this relay or contact do?

52a

A

contact position follows breaker
(usually open when de-energized)

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10
Q

What does this relay or contact do?

52b

A

contact position opposite of breaker
(usually closed when de-energized)

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11
Q

What does this relay or contact do?

52h

A

contact position is based on breaker position
(racked in, racked out, test)

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12
Q

What does this relay or contact do?

52e

A

contact changes state earlier than other, similar contacts

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13
Q

What does this relay or contact do?

59

A

overvoltage

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14
Q

What does this relay or contact do?

63

A

pressure switch

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15
Q

What does this relay or contact do?

64

A

ground protective relay

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16
Q

What does this relay or contact do?

74

A

alarm relay

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17
Q

What does this relay or contact do?

86

A

lockout relay

86-1: phase to phase - “one and done,” can’t keep running
86-2: phase to ground, can keep running

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18
Q

What does this relay or contact do?

87

A

differential protective relay
(generating devices)

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19
Q

What is safety class 1 for piping?

A

failure could cause a condition III or condition IV loss of reactor coolant

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20
Q

What is safety class 2 for piping?

A

piping penetrating reactor containment which forms part of containment penetration boundary and piping in the RHRS, ECCS, H2, Control System, and MS or FW systems inside containment

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21
Q

What is safety class 3 for piping?

A

failure would result in a radioactive release to the environment, or piping in systems that provide or support safety systems, control containment releases, or remove decay heat from spent fuel

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22
Q

What is safety class 5 for piping?

A

Non-Nuclear Safety (NNS) piping located in Seismic Category 1 structures

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23
Q

What is safety class G for piping?

A

Non-Nuclear Safety (NNS) piping NOT located in Seismic Category 1 structures

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24
Q

Relay/Contact Suffixes

x, y, or z

A

auxiliary relays

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25
Relay/Contact Suffixes O
opening relay
26
Relay/Contact Suffixes C
closing relay
27
Relay/Contact Suffixes CS
control switch
28
Relay/Contact Suffixes PB
push button
29
Device Designators TDPU
time delay pickup contacts typically change state at some set time interval after the device is actuated
30
Device Designators TDDO
time delay dropout contacts typically change state at some set time interval after the device is de-energized
31
Device Designators TDC
time delay closing
32
Device Designators TDO
time delay opening
33
What do the different parts mean in pipe designators? Example: 16-CT-1-003-151R-2
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
34
What kind of valve is this?
gate valve
35
What kind of valve is this?
double disc gate valve
36
What kind of valve is this?
globe valve
37
What kind of valve is this?
needle valve
38
What kind of valve is this?
plug cock valve
39
What kind of valve is this?
ball valve
40
What kind of valve is this?
diaphragm valve
41
What kind of valve is this?
hermetically sealed valve
42
What kind of valve is this?
butterfly valve (flanged or wafer type)
43
What kind of valve is this?
post indicator valve
44
What kind of valve is this?
fire protection post indicator valve
45
What component is this?
vacuum breaker
46
What kind of valve is this?
float check valve
47
What kind of valve is this?
stop check valve
48
What kind of valve is this?
safety or relief valve
49
What kind of valve operator is this?
air diaphragm operator
50
What kind of valve operator is this?
piston operator
51
What kind of valve operator is this?
manual gear operator
52
What kind of valve operator is this?
extension stem operator
53
What kind of valve/operator is this?
throttling
54
What does this symbol mean?
alarm annunciator (if two of these symbols on the same sheet share the same subscript, they have a common annunciator window)
55
What does this symbol mean?
reactor trip annunciator ("first out")
56
What does this symbol mean?
turbine trip annunciator
57
How can the I&C drawing be found if given the Mechanical drawing number?
Change the leading 0 to a 2, e.g. M1-0225 becomes M1-2225.
58
As electrical print number increases, complexity...
increases
59
How are relays and contacts shown on drawings?
de-energized
60
A motor with a circle beside it denotes...
HP rating
61
A motor with a box beside it denotes...
space heater rating

ILOT Study Decks LC32 (93 decks)

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