Listed below are emergency steps for buildings filled with gas but not involved in fire. These steps are to be followed in this exact order.
1)Have dispatcher notify proper gas emergency crew.
2)Park fire vehicle well away from building; lay a line to handle fire following possible explosion.
3)Shut off gas outside at meter or curb valve.
4)Open windows and doors from outside to obtain ventilation.
5)Evacuate any endangered occupants.
6)Do not operate any electric switches inside the gas-involved area.
7)Use combustible gas indicators to determine when entry is safe.
8)Wear self-contained masks to trace source of escaping gas and shut off or plug (but do NOT then turn on gas to building - leave restoration of service to gas company employees.)
15.Firefighters have arrived on the scene of a building filled with natural gas. It has been reported by the occupants of the building that there is no fire. Firefighters have shut off the gas outside at meter or curb valve. They should next:
A)evacuate any endangered occupants
B)have dispatcher notify proper gas emergency crew
C)open windows and doors from outside to obtain ventilation
D)use combustible gas indicators to determine when entry is safe
16.Engine Company 29 has arrived on the scene of Southwest Elementary School. They have been informed that there is a gas leak within the building, but no report of fire. Firefighters have parked away from the building and laid a hand line for safety considerations. They have shut off the gas at the outside meter and have opened windows and doors from outside to obtain ventilation. All endangered occupants have been evacuated. Firefighters have also turned on electrical lights in the hallway to assist in the evacuation process. They then used combustible gas indicators to determine when re-entry is safe.
Which of the following listed below is correct concerning the gas emergency at the elementary school:
A)firefighters operated according to specified guidelines
B)firefighters did not open doors from outside to obtain ventilation
C)firefighters operated an electrical switch within the building
D)firefighters did not lay the proper amount of hose line as safety precautions require
11. Answer is C.
1) The hole should be located between the joists or rafters. Thus the joists or rafters should never be cut, as they are the main support for the roof.
2) Locate the joists by sounding with the axe and noting the area that is solid. A solid sound will denote the location of the joist.
4) Once the joists are located, an adequate size hole at least 4 feet should be marked on the roof with the pick head. The roof covering tar paper should be removed before proceeding with the cutting procedure.
3) Upon identifying wood sheathing, the firefighter may begin cutting with the fire axe. The axe should not be swung as a wood cutter would use it, but with short quick strokes.
12. Answer is D.
4) Knots weaken a rope because the rope is bent in order to form the knot and the outside fibers take most of the strain at the bend.
5) The knot that weakens the rope the least is one requiring the least abrupt bending.
1) The bends that a rope undergoes in the formation of a knot or hitch are of three kinds: the bight, loop, and round turn.
3) The bight is formed by simply bending the rope, keeping the sides parallel; the loop is made by crossing the sides of a bight; the round turn consists of the further bending of one side of a loop.
2) Knots and hitches are formed by combining these elements in different ways so that the tight part of the rope bears on the free end to hold it in place.
13. Answer is C.
4) The need for respiratory protection in the fire service has increased greatly over the years.
2) When homes were built of wood and contained furnishings of ordinary combustibles they produced fewer toxic products of combustion.
5) These gases, though still unhealthy, were not lethal in small quantities.
1) Such is not the case in our technological world of today.
6) Plastics, synthetic materials, pesticides, and other hazardous products can be found everywhere.
3) It has been well documented that most fire deaths occur from inhalation of smoke and toxic gases, rather than actual contact with fire.
14. C - As stated in the types of alarms and times of occurrences chart, the severe fires were alarms #6, #7, and #8, all of which occurred in the early morning hours.
15. C - After completing step #3 - shutting off the gas outside at meter or curb valve - firefighters would proceed to step #4 which involves opening windows and doors from outside to obtain ventilation.