Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

ILT Review Often > SSPS > Flashcards

SSPS Flashcards

1
Q

What does Redundancy do for us and what are examples?

A

Single failures neither cause nor prevent Rx Trip/ESF Actuation

Redundant sensors and independent channels with a coincident trip

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What does Independence do for us and what are examples?

A

Train separation.

Separate sensors with separate: power supplies, racks, panel mounted equipment and relays for actuation of protective functions.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What does Diversification do for us?

A

Several methods to perform similar functions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What does it mean to be Fail Safe?

A

Loss of power results Reactor Trip/ESF Actuation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Does CTS actuate on a loss of power?

A

NO

Energize to actuate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What does Control/Protection Separation mean?

A

Electrical isolation / physical separation maintains control systems separate and distinct from protective system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What does Testability mean?

A

Permits testing during normal ops w/o initiating protective action

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What does coincidence mean?

A

Meets single failure criteria such that reliability is ensured and allows in-service testing. Requires minimum logic to produce output functions.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What will happen if you lose both 15 VDC OR both 48 VDC Power?

A

Rx Trip

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What powers Train A Slave Relays?

A

CRID I

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What powers Train B Slave Relays?

A

CRID IV

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What does a loss of CRID I or CRID IV do?

A

prevents actuation of ESF equipment on associated train

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Where does the General Warning come from?

A

Logic Cabinets

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What will give you a general warning?

A

Bypass Breaker Closed

Loss of 48V DC or 15V DC power supply

Output mode selector switch in TEST

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What does a general warning on both trains do?

A

Trips Rx

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the purpose of Test Injection Switches?

A

Disconnects Xmitter, connects to test input jacks for the Xmitter

17
Q

What is the purpose of Bistable Test Switches?

A

Switch to TEST when instrument fails.

Gives SSPS the trip signal

For CTS, Bistables are bypassed

18
Q

What is the purpose of RPS BYPASS SWITCHES?

A

Puts power to logic cabinet regardless of input, allowing you to test the input drawer (using bistable test switch) without chance of causing an actuation.

You never get a trip signal.

19
Q

What is the purpose of OUTPUT MODE SELECTOR SWITCH?

A

TEST- disables all slave relays for an entire train by replacing 120 VAC Slave Relay power with 15 VDC

(operated for SSPS testing)

20
Q

What is the purpose of INPUT ERROR INHIBIT SWITCHES?

A

Removes grounds from all input relay contacts.

Keeps universal logic cards from sensing a change in input.

21
Q

What happens with the MULTIPLEXOR TEST SWITCH in Normal?

A

Sends signals to PPC and Control Boards

22
Q

What happens with the MULTIPLEXOR TEST SWITCH in Inhibit?

A

Inhibits data output from train in test

23
Q

What happens with the MULTIPLEXOR TEST SWITCH in A+B?

A

Alternately inhibits data of one train

24
Q

What does the MULTIPLEXOR “do”?

A

NOTHING

Goes to Status Lights, Alarms and PPC

25
Q

What do the Isolation Amplifiers do?

A

Ensures failure in ctrl system does not propagate to protection system and physical separation by placing in separate ctrl group racks

26
Q

What does the Rx Trip Breaker Trip Coil do?

A

Trips breakers when ENERGIZED

27
Q

What does the Rx Trip Breaker UV Coil do?

A

From UV Coil driver in Logic Cab

Trips when 48vDC from SSPS is lost

28
Q

Does the Rx Trip Breaker UV Coil need control power?

A

NO

29
Q

What does the Rx Trip Breaker Shunt Coil do?

A

Same actuation method as UV

Gives power to trip bkr to make it trip

30
Q

Does the Rx Trip Breaker Shunt Coil need control power?

A

YES

31
Q

Do Rx Trip Bypass Breakers have SHUNT Coils?

A

NO

32
Q

What happens if both Rx Trip Bypass breakers are in closed?

A

Trips Bypass Breakers

33
Q

What are Input Bay Direct Feeds powered from?

A

SSPS Input Bays

34
Q

What are indirect feeds from the Input Bay powered from?

A

Protection Racks

35
Q

What are the inputs to OTΔT?

A

ΔT
Tave
AFD
Pzr Press

36
Q

What does OTΔT protect from?

A

DNB

37
Q

What rare the inputs for OPΔT?

A

ΔT

Tave

38
Q

What does OPΔT protect from?

A

KW/ft

ILT Review Often (23 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions