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Systems > Fire - Water > Flashcards

Fire - Water Flashcards

1
Q

Purpose of the Water FP System?

A

TO protect equipment and personnel

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2
Q

Where is the U2/3 DFP?

A

2/3 Cribhouse

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3
Q

What is the rating for the 2/3 DFP?

A

3000gpm at 165psig

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4
Q

What is the autostart pressure for the 2/3 DFP?

A

80psig sense at DFP discharge

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5
Q

What trips are present for the 2/3DFP?

A

Overspeed trip which is never bypassed

Low Oil Pressure trip which is bypassed on low pressure start

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6
Q

What is the capacity of the 2/3DFP Day Tank?

A

275gallons - allows for 8 hours operation; refilled by U3 EDG Fuel Oil Transfer Pump (THIS WILL INOP 3EDG)

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7
Q

What provides starting power to 2/3DFP?

A

Own batteries

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8
Q

What provides charging power to 2/3DFP batteries?

A

Battery Charger fed from MCC 20-2

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9
Q

What are the 3 positions for the 2/3 DFP controller?

A

OFF - MANUAL - AUTO

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10
Q

In what positions will the DFP auto start?

A

Manual or Auto

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11
Q

How is the 2/3 DFP secured?

A

Only manual at DFP Panel?

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12
Q

How many times is the 2/3DFP designed to attempt to start?

A

up to 5 additional crank and reset cycles (Up to 165 seconds)

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13
Q

What is the design capacity of the U1 DFP?

A

2500gpm at 145psig

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14
Q

What is the autostart setpoint for the U1 DFP?

A

Pressure below 75psig.

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15
Q

What auto trip exists on U1 DFP?

A

Overspeed trip which is never bypassed

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16
Q

What is capacity fo the U1 DFP Day Tank?

A

500 gallons providing 8 hours diesel operation

17
Q

Where is U1 DFP Battery fed from?

A

U1 RLC 17L

18
Q

What autostarts U1 DFP?

A

Low header pressure, loss of AC feed to charger

19
Q

What are 5 positions for U1 DFP switch

A

Off-Man 1-Man2-Test-auto

20
Q

How is U1 DFP secured?

A

Locally ONLY

21
Q

If Both DFPs are inoperable, what must be done?

A

Returned to service or supply backup fire water supply

22
Q

What is the autostart setpoint for U1 Screenwash pump?

A

Fire Header decreases to 70psig

23
Q

What is power source for U1 Screenwash pump?

A

PC5

24
Q

What are the relief valve setpoints for U1 and U2/3 DFPs?

A

150psig

25
Q

How is the 2/3 DFP discharge valve operated?

A

Electrically disconnected in the open position. FIRE CODE DOES NOT ALLOW AO OR MO valves. would be powered by 250vdc TB2

26
Q

What provides normal keepfill for FP?

A

Service Water

27
Q

How do the Wet Fire Protection Pipes work?

A

Filled with water all the time, fusible link on nozzle breaks and allows water flow.

28
Q

What areas are protected by Wet Piping?

A 
Most normally accessible plant areas not covered by gaseous (water harmful) or heavy oil areas:
EDG rooms
Condensate Pmps
CCSW pmps
Clean/Dirty Oil Rooms
HeaterBays
538ft ceiling
RFP
MG Sets
CH
Trackway
SBO
29
Q

What is a Deluge Piping System?

A

Not normally filled, uses spray nozzles.

Deluge valve tripped electrically from signal.

30
Q

What electrical signal trips a deluge valve?

A

Xfrmr Differential current or sudden pressure
heat detector
push button
pull station

31
Q

What areas use Deluge Systems?

A 
Turb Oil
H2 Seal Oil
2/3 DFP
U2& 3 Transformers
CH Basement and 2/3 DGCWPs
32
Q

What is a Pre-action piping system?

A

Not normally filled and uses closed sprinkler heads and deluge valves; used in areas that may be exposed to below freezing temps.

signal opens deluge valve, but will not dischage unless fusible link broken

33
Q

What areas have pre-action piping systems?

A 
Unit HPCI Rooms
Tb ground floor outside AEER
U2 SA & IAC Area
TB EHC Area
U2 & 3 RB Hatchways
U2TB Cable concentration area.
34
Q

What are autostart setpoints for DFPs?

A

U2/3 - 80psig
U1 - 75psig (Also loss of AC or 1 DC Feed)
Screenwash - 70psig

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