FT 4/20 Flashcards
Regarding Natural Gas properties, it is incorrect to state that?
Select one:
a. Depending on the mixture, its explosive range is 5% to 15%
b. When unconfined (outdoors), natural gas will burn rapidly with an explosive pressure
c. When natural gas ignites, it undergoes a rapid increase in volume
d. It is significantly lighter than air
B
(Nat Gas–Section 3) (without an explosive pressure)
The correct answer is: When unconfined (outdoors), natural gas will burn rapidly with an explosive pressure
A Con Edison gas main valve will have an ID number?
Select one:
a. Stamped on the south side of the collar
b. On a tag, outside of the valve cover
c. Stamped on the north side of the collar
d. On a tag, inside of the valve cover
D
(Nat Gas—Pg 8)
The correct answer is: On a tag, inside of the valve cover
An “NC” stamped on a tag near a service meter indicates there is no? Select one: a. Interior gas riser valve b. Curb valve or service valve c. Excess flow valve d. Main valve
B
(Nat Gas–Pg 9)
The correct answer is: Curb valve or service valve
Regarding Peck Vents, it is incorrect to state they?
Select one:
a. Normally have an odor of natural gas
b. May have a red cap
c. Vent excess gas to the exterior if the service regulator fails
d. Are installed on systems supplied by medium or high pressure
A
(Nat Gas—Pg 11)
The correct answer is: Normally have an odor of natural gas
Which one of the following is indicative of a Major Gas Emergency?
Select one:
a. 10% LEL detected in an unvented sewer
b. 5% LEL detected outside a building
c. Gas leaking and present inside of a wall or void
d. 15% gas found in an unvented manhole
C
(Nat Gas—Pg 15) (10% LEL outside a building, 20% LEL unvented sewer, 20% gas found in an unvented manhole)
The correct answer is: Gas leaking and present inside of a wall or void
Regarding the use of gas detectors and meters, it is incorrect to state that?
Select one:
a. The Natural Gas Meter is the superior tool for identifying where it is no longer safe to operate
b. Natural gas detectors and meters require warm up times in fresh air
c. The Natural Gas Detector is the superior tool for locating leaks in appliances (stoves)
d. Report to the IC readings found at a location high and at the entrance to a room with the suspected leak
D
(Nat Gas 6.4) (and in the middle of the room)
The correct answer is: Report to the IC readings found at a location high and at the entrance to a room with the suspected leak
The first priority at a natural gas emergency is to locate and mitigate the leak.
Select one:
a. Agree
b. Disagree
B
(Natural Gas—6.5) (Insure it is not a major gas emergency)
The correct answer is: Disagree
When investigating a gas emergency, it would be incorrect to state that?
Select one:
a. All investigations warrant the use of all available gas detectors / meters on scene
b. The Ladder Outside Team should proceed to the natural gas utility meter location
c. Engines arriving prior to Ladder Companies should activate their natural gas meter prior to entering the building
d. The 1st ladder inside team should proceed directly to the basement / cellar any time any levels are displayed on the Natural Gas Detector
D
(Nat Gas—Pg 20) (Displayed on the METER)
The correct answer is: The 1st ladder inside team should proceed directly to the basement / cellar any time any levels are displayed on the Natural Gas Detector
A leak or break in \_\_\_\_\_\_\_\_ may be stopped or greatly diminished by taping, or stuffing putty, rags into the break? Select one: a. Plastic piping b. Medium or high pressure gas piping c. Low pressure gas piping d. Low or medium pressure gas piping
C
(Nat Gas—6.7.3)
The correct answer is: Low pressure gas piping
Regarding the closing of gas valves, it is incorrect to state?
Select one:
a. When the key operating nut is parallel to the piping, it indicates it is in the closed position
b. Most natural gas appliance shutoffs are of the ¼ turn variety
c. ¼ turn interior gas riser valves are sometimes found in a cellar / basement near the ceiling area
d. In a basement / cellar, a building service valve may be found just inside of the building where natural gas enters the building and will usually be a ¼ turn valve
A
(Nat Gas Pg 22-23) (OPEN position)
The correct answer is: When the key operating nut is parallel to the piping, it indicates it is in the closed position
The last resort for the FDNY is to close the? Select one: a. Main Valve b. Head of Service Valve c. Curb Valve d. Master Meter
C
(Nat Gas Pg 24)
The correct answer is: Curb Valve
Plastic valves are color coded? Select one: a. Yellow b. Salmon c. White d. Grey
C
(Nat Gas Pg 24)
The correct answer is: White
If an incident is determined to be a major gas emergency, members should transmit a? Select one: a. 10-75 and a 10-80 Code 1 b. 10-60 and a 10-80 Code 1 c. 10-75 and a 10-80 d. 10-60 and a 10-80
A
(Nat Gas Pg 28)
The correct answer is: 10-75 and a 10-80 Code 1
For inside gas leaks, if the indoor leak is found, you may continue to operate if levels can be kept at less than \_\_\_\_\_ percent LEL by venting? Select one: a. 80 b. 10 c. 50 d. 20
A
(Nat Gas Pg 32)
The correct answer is: 80
For inside gas leaks, if at any time, gas levels reach \_\_\_\_\_\_ of the LEL or higher, treat the affected area as a “Potential Blast Zone”? Select one: a. 50 b. 20 c. 80 d. 10
C
(Nat Gas Pg 32)
The correct answer is: 80
Members are operating inside of a Private Dwelling where they have a natural gas leak that has NOT been found. While operating, they determine they cannot locate the leak and there are indications that the leak is coming from an outside, subsurface source. In this case, they should treat the affected area as a “Potential Blast Zone” if levels cannot be limited to less than \_\_\_\_\_ % LEL by venting? Select one: a. 80 b. 20 c. 50 d. 10
D
(Nat Gas Pg 32)
The correct answer is: 10
At a major gas emergency, it would be incorrect to consider which tactic below?
Select one:
a. The potential blast zone shall only be entered for direct, life-saving purposes
b. Do not enter a potential blast zone to move an apparatus
c. Apparatus should not be located within the potential blast zone
d. Removing ignition sources and venting are optional tactics in the potential blast zone
D
(Nat Gas Pg 33) (Not options)
The correct answer is: Removing ignition sources and venting are optional tactics in the potential blast zone
Which of the following is NOT considered intrinsically safe and cannot be used by FDNY personnel in a potentially explosive atmosphere? Select one: a. FDNY - Thermal Imaging Camera b. Natural gas meter c. Handie-talkie d. Natural gas detector
A
(Nat Gas Pg 34) (FDNY flashlight)
The correct answer is: FDNY - Thermal Imaging Camera
When performing rapid evacuation in an explosive environment, members would be incorrect to?
Select one:
a. Knock on doors to alert occupants to self-evacuate
b. Advise occupants to use elevators instead of stairs
c. If forcing entry - use the hydra ram or the adz end of the halligan to gap and force the door
d. Force entry for only known life hazards
B
(Nat Gas Pg 34-35)
The correct answer is: Advise occupants to use elevators instead of stairs
Regarding water supply and line placement at major gas emergencies, fog streams should not be used to dissipate natural gas venting outside of a structure. To protect structures, stretch 2 ½” hose or large caliber streams are appropriate for defensive positions?
Select one:
a. Agree
b. Disagree
A
(Nat Gas Pg 35)
The correct answer is: Agree