PART I HAZ - MAT 1-4:

Transcription

1 PART I HAZ - MAT 1-4: 1. The term LP refers to Liquefied Petroleum Gases, which are stored as a liquid under pressure but vaporize into a gas when the pressure is released. Please choose an incorrect property listed below for LPG? (Haz-Mat # 1, section 1.2) A) LP gases are non-toxic and non-poisonous. B) LP gas is odorless; an odorizing agent is added only when it is processed for domestic consumption. C) LP gas is flammable. D) In the liquid state, LP gases present a hazard similar to a highly volatile flammable liquid but with more rapid vaporization. E) LP gases are lighter than air (1.5 to 2 times lighter). 2. Basic precautions to be taken at LP Gas Fires and Emergencies are correctly listed in which choice(s) below? (Haz-Mat # 1, section 1.3) A) Whenever possible, approach the fire or leak from upwind. Keep nozzle low and aim it upward to disperse gases or flaming vapors. B) Clear all persons out of the vapor cloud area, evacuate areas in the path of the vapor cloud immediately. C) Shut off all sources of ignition at the same time. D) Keep everyone (civilians and members) at least 1000 feet from the front and rear of the tank and 500 feet from the sides at all times. 3. Operations at an LPG leak with a fire are incorrectly listed in which choice below? (Haz-Mat # 1, section 1.4) A) Do not ever extinguish an LPG fire until the leak has been stopped. B) Portable dry chemical extinguishers are effective on small LP gas fires. Carbon dioxide extinguishers can also be used. They should be applied at the base of the fire. C) Tank failure under fire conditions usually occurs in the vapor area of the tank when sufficient water cannot be applied to prevent the metal from softening or weakening to a point where metal failure occurs. 4. Please indicate if you agree or disagree with the below paragraph? (Ha-Mat # 1, section 1.4.8) Before LPG tank failure occurs, the rise in pressure within the tank will cause an increase in the volume of fire, or a rise in the noise level or both. This may or may not be accompanied by a bubble or blister forming on the tank shell. When any of these symptoms are present, the operating forces should be withdrawn to a safe area. A) Agree or D) Disagree HW #14 - Spring

2 5. Please choose an incorrect property for Compressed Natural Gas? (Haz-Mat # 1, section 3.3) A) Natural gas is flammable. B) Natural gas is non-toxic. Asphyxiation can occur due to oxygen displacement in an enclosed area. C) Natural gas is heavier than air. D) Natural gas is composed of 95% Methane and 5% other gases. The two terms Natural Gas and Methane are used interchangeably. 6. Please choose the most correct inherent hazard(s) of Compressed Natural Gas (CNG)? (Haz-Mat # 1, section 3.4) A) CNG is pressurized in cylinders up to a pressure 3,000 PSI. B) CNG cylinders are protected with a fusible plug pressure relief device which will open when a cylinder is exposed to heat or fire. C) CNG cylinders are subject to failure, but not to BLEVE's (Boiling Liquid Expanding Vapor Explosion) because they do not contain liquid. D) All of the above. 7. Please choose an incorrect property for Methanol? (Haz-Mat # 1, section 4.2) A) Methanol is a highly volatile flammable liquid. B) It has a flash point of 32 F. C) It is soluble in water. D) Methanol vapors are slightly heavier then air and will flow along the ground collecting in low areas. E) Methanol burns cleanly (little smoke) and its pale blue flame may be difficult to see in bright sunlight. 8. The application of large amounts of water will dilute Methanol rendering it non-flammable. The concentration of methanol must be reduced below to be effective. Please fill in the blank? (Haz-Mat # 1, section 4.4.2) A) 5% B) 10% C) 20% D) 25% HW #14 Spring

3 9. Please choose an incorrect procedure from the list below when dealing with asbestos? (Haz-Mat # 3, section 3) A) When it is determined that operations involve suspected asbestos contamination, transmit radio signal 10-80, specifying asbestos release. B) Minimize commitment of forces as conditions permit. C) Wet asbestos material by using a solid stream to prevent the fibers from becoming airborne. D) Isolate members suspected or confirmed to be contaminated to prevent crosscontamination of apparatus or other members. 10. Asbestos locations are correctly found in which choice(s) below? (Haz-Mat # 3, section 3) A) Insulated coverings on boilers, heat pipes or duct linings. B) Insulation for Con Edison steam on pipes, in steam manholes, and expansion joints. C) Sprayed on asbestos fire retarding for structural steel. D) Ceilings (white popcorn-like texture). 11. Please choose an incorrect property for Carbon Monoxide? (Haz-Mat # 4, section 2) A) CO is a colorless, odorless, tasteless, non-irritating, toxic gas. B) CO is a natural by-product of incomplete combustion from fuels such as gasoline, wood, coal, propane, oil and methane. C) Virtually undetectable without special instruments. D) It is a flammable gas with an auto ignition temperature of 1128 Degrees F., and a Lower Explosive Level (LEL) of 5% and an Upper Explosive Level (UEL) of 15%. E) CO has a vapor density which makes it slightly lighter than air (.968). 12. Carbon Monoxide is absorbed into the body through the lungs where it is transferred to your blood. Once in the body it combines with hemoglobin and becomes a deadly compound called carboxyhemoglobin (COHb). CO has a greater affinity for hemoglobin than O2. CO is about more attracted to hemoglobin than O2, making it highly toxic. Please fill in the blank? (Haz-Mat # 4, section 3) A) 100 B) 110 C) 200 D) 210 HW #14 - Spring

4 13. Symptoms of CO poisoning are correctly described in which choice(s) below? (Haz-Mat # 4, section 3.12) A) Low Level CO Poisoning- can mimic flu symptoms, headache (mild/severe), fatigue, nausea, dizziness, confusion, irritability. B) Medium Level CO Poisoning- vomiting, drowsiness, loss of consciousness. C) High Level CO Poisoning- seizure, coma, permanent brain damage, death. 14. Operational guidelines for responses to CO detector activations and CO Emergencies are incorrectly listed in which choice below? (Haz-Mat # 4, section 4) A) Are any individuals exhibiting symptoms of CO poisoning? If so consider evacuating the affected area, ventilate, and request E.M.S. to respond. B) Request the response of a company equipped with a CO meter if one is not already on the scene. C) Using a CO meter, take an initial reading at the front door of premises, then continue investigation to find source of CO in premises. D) If no one exhibits any symptoms of CO poisoning, evacuation is not necessary, unless a level of over 9 PPM is recorded by the meter. 15. The Incident Commander (IC) on a Carbon Monoxide response shall request the utility company to respond if: Please choose the most correct answer? (Haz-Mat # 4, section 4.1.5) A) A CO level over 9 PPM is recorded by a meter. B) Units on the scene shut off a gas appliance. C) An individual(s) is exhibiting symptoms of CO poisoning. D) The IC feels a response by the utility company is required. E) All of the above. 16. Please choose the incorrect definition from the list below? (Haz-Mat # 4, section & 4.2.6) A) CO Incidents: No occupants are symptomatic or meter readings of 9PPM or less. B) CO Emergencies: Occupants are symptomatic or meter readings greater than 9PPM. HW #14 Spring

5 17. Please choose the incorrect procedure for CO Incidents where meter readings of 9 PPM or less are discovered and no one is symptomatic? (Haz-Mat # 4, section 4.3) A) Inform occupant(s) that our meter has not detected an elevated CO level. B) Attempt to reset the detector, if the detector does not reset or it does not have a reset, recommend that the occupant refer to the manufacturer s instructions. C) Inform occupants that if a detector activates again that they should again call 911 to notify the Fire Department. D) The condition may have been caused by reverse stacking or a downdraft. Leaving a window open will not eliminate the problem. 18. Please choose the incorrect procedure for CO Emergencies where meter readings of greater than 9 PPM but less than 100 PPM are discovered? (Haz-Mat # 4, section 4.4) A) Readings of greater than 9 PPM shall not be considered normal. Inform occupants that they have a potentially dangerous level of CO. B) Begin evacuation of the affected area and ventilate. C) If it is determined that an appliance is malfunctioning and thereby producing CO, it should be shut down. D) Once the faulty appliance is shut down and ventilation has reduced the CO level to 9 PPM or less the premises may be reoccupied. E) Inform the occupant of all actions taken and that the utility company has been requested to respond. 19. Please choose the incorrect procedure for CO Emergencies where meter readings of 100 PPM and greater are discovered? (Haz-Mat # 4, section 4.5) A) Inform occupants that we have detected a potentially lethal level of CO. B) Recommend that all persons leave the affected area and begin ventilation. C) If a malfunction appliance is found producing CO it should be shut down. D) Once the source of CO has been mitigated and the level of CO is reduced to 9 PPM or less the area may be reoccupied. 20. Please choose the incorrect sub code from the list below? (Haz-Mat # 4, section 5.1) A) Code 1 = No Detector Activation: Carbon Monoxide Investigation (low battery, defective detector, unwarranted alarm, etc.). B) Code 2 = Detector Activation: Carbon Monoxide Incident (CO Meter Reading of 1-9ppm). C) Code 3 = Detector Activation: Carbon Monoxide Emergency (CO Meter Reading of greater than 9ppm). D) Code 4 = No Detector Activation: Carbon Monoxide Incident or Emergency (Specify) e.g.: No detector present in affected area, detector present in affected area, but did not activate. HW #14 - Spring

6 ANSWERS 1. Answer: E = LP gases are heavier then air (1.5 to 2 times heavier). 2. Answer: A, B, C = D = Keep everyone, not actually engaged in operations, at least 1000 feet from the front and rear of the tank and 500 feet from the sides. 3. Answer: A = Do not extinguish the fire until the leak has been stopped, except under extremely unusual conditions. 4. Answer: A 5. Answer: C = Natural gas is lighter than air. 6. Answer: D 7. Answer: B = It has a flash point of 54 F. 8. Answer: C 9. Answer: C = Wet asbestos material by using a fog or spray stream to prevent the fibers from becoming airborne. 10. Answer: All are correct 11. Answer: D = It is a flammable gas with an auto ignition temperature of 1128 Degrees F., and a Lower Explosive Level (LEL) of 12.5% and an Upper Explosive Level (UEL) of 74%. Note: Natural Gas = LEL 5% - UEL 15%. 12. Answer: D 13. Answer: A, B, C 14. Answer: A = Are any individuals exhibiting symptoms of CO poisoning? If so immediately evacuate the affected area, ventilate, and request E.M.S. to respond. 15. Answer: E 16. Answer: A = CO Incidents: No occupants are symptomatic and meter readings of 9PPM or less. 17. Answer: D = The condition may have been caused by reverse stacking or a downdraft. Leaving a window open could eliminate the problem. 18. Answer: B = Recommend that all persons leave the affected area and begin ventilation. 19. Answer: B = Begin evacuation of the affected area and ventilate. 20. Answer: A = Code 1 = Detector Activation: Carbon Monoxide Investigation (low battery, defective detector, unwarranted alarm, etc.) HW #14 Spring

7 PART II - FFP TAXPAYERS Sec (con t): 1) In assessing the possibility of a structural collapse, consideration must be given to all of the following factors except? (4.2.1) A) Type of construction involved in the fire B) Intensity of the fire C) Time that the structural members have been burning or subjected to the heat of the fire D) Size of the hoseline being used by the engine company 2) A heavy body of fire which has been burning out of control for minutes or more, particularly in a large open floor area is a warning sign of a potential structural collapse during firefighting operations. (4.2.5) A) 5 B) 10 C) 15 D) 20 3) An Impact load has a much greater effect than the same weight carried as a static (stationary) load. Do you: (4.2.4 F) A) Agree or D) Disagree? 4) All of the following are basic factors necessary for a backdraft, except? (4.4.1) A) Carbon Monoxide B) Combustibles C) Oxygen D) Heat 5) A room or fire area only requires of its space to contain the explosive mixture for the entire area to possibly explode. (4.4.1 F) A) 10% B) 15% C) 25& D) 50% HW #14 Spring FFP Taxpayers Sec

8 6) The inverted roof in a taxpayer may be pitched in all of the following ways except? (5.5.3) A) Front to rear B) Front and rear to the center C) Front, rear, and sides to the center D) Rear to front 7) In most cases the high portion of the cockloft is where? ( A) A) Rear B) Front C) Sides 8) In Taxpayers, what area do most fires originate from? (5.5.3 C) A) Rear of the cellar B) Front of the first floor C) Rear of the first floor D) Front of the cellar 9) The roof cut for vertical vent at a taxpayer must be large enough to cause the bulk of the heat, smoke, and gases being produced by the fire to vent in that direction and away from the advancing hoseline. How big should the hole be, where possible? (5.4.6) A) 3 x 6 B) 8 x 8 C) 4 x 6 D) 8 x 6 10) If difficulty is encountered in opening the returns of scuttles or skylight openings, it may be quicker and more practical to do what? (5.4.8) A) Call for a unit inside the building to open up the returns from inside B) Make examination holes for ventilation around the openings. C) Start a trench cut at the location D) Make a 8x8 roof cut 10 ft from your location HW #14 Spring FFP Taxpayers Sec

9 11) The immediate ventilation and cutting of an effective size hole on the roof calls for saws and members on the roof. (5.4.12) A) 1 and 2 B) 2 and 2 C) 2 and 4 D) 2 and 3 12) Engine companies may be used to relive an area of smoke and hear with a fog stream. They should remember to adjust the fig pattern to the width of the opening and stand back how many feet while operating? (5.4.15) A) 2 to 3 ft B) 3 to 4 ft C) 4 to 5 ft D) 5 to 6 ft 13) Roof cuts should be made in one operation. They must be lifted off in one piece. Do you: (5.5.9) A) Agree or D) Disagree? 14) Wood joist beams are usually spaced inches on center. Wood flooring and roof boards when nailed directly to the roof beams are nailed at right angles to these joists. (5.5.11) A) 12 B) 14 C) 16 D) 22 15) It cannot be assumed, once an initial determination is made on the run of joists, that all joists throughout the building run the same. In most cases joists will run in the same direction, but there are some exceptions. Do you: A) Agree or D) Disagree? HW #14 Spring FFP Taxpayers Sec

10 ANSWERS 1. D 2. D 3. Agree 4. A 5. C 6. D 7. B 8. C - This is where utilities, storage, and services are located and this is the area from which fire usually extends to the cockloft. 9. B 10. B 11. C 12. C 13. Disagree - if possible, they should be lifted off in one piece. 14. C 15. Agree HW #14 Spring FFP Taxpayers Sec