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Preview Self-Contained Breathing Apparatus Questiones
A | To safely enter a compartment where CO2 has been released from a fixed extinguishing system, you should __________. | wear a self-contained breathing apparatus | test the air with an Orsat apparatus | wear a canister type gas mask | test the air with a pure air indicator |
A | After putting on a self-contained breathing apparatus, you open the air supply and hear a continuous ringing of a bell. What does this mean? | The air bottle needs to be refilled. | The unit is working properly. | The face mask is not sealed properly. | The air supply hose has a leak. |
A | When the bypass valve of a self-contained breathing apparatus is opened, the mainline valve should be __________. | completely closed | pinched to check the air flow | completely open | immediately disconnected |
A | When the bypass valve of a self-contained breathing device is opened, the air flows __________. | directly to the face piece | through the regulator | from the bottle into the atmosphere | directly to the air supply bottle |
A | The bypass valve on a self-contained breathing device should be opened if __________. | the regulator of the breathing apparatus malfunctions | you are entering a space containing poisonous vapors | the face piece of the breathing device is too tight | you are entering a space containing explosive gases |
A | The rated operating time of a self-contained breathing device may be reduced in actual use because of __________. | the physical exertion of the person wearing the device | pressure differences in the atmosphere | the length of the hose attached to the face piece | spaces containing poisonous vapors |
A | You are tending the lifeline of a person who has entered a compartment wearing a breathing apparatus. How many tugs of the lifeline mean "Are you all right"? | One | Two | Three | Four |
A | You are wearing a breathing apparatus inside a tank. How many tugs on the lifeline indicate that you are all right? | 1 | 2 | 3 | 4 |
B | When the alarm bell sounds on a positive-pressure, self-contained breathing apparatus, how long will reserve air supply last? | About 8-10 minutes | About 4-5 minutes | About 18-20 minutes | About 12-15 minutes |
B | The function of the bypass valve on the self-contained breathing apparatus is to __________. | allow exhaled gases to pass outside the bottle | allow the wearer to manually give himself oxygen | release excess heat which would otherwise cause the bottle to explode | control the pressure of the oxygen as it enters the body |
B | A self-contained breathing apparatus is used to __________. | determine if the air in a tank is safe for men | enter areas that may contain dangerous fumes or lack oxygen | resuscitate an unconscious person | make underwater repairs to barges |
B | You are wearing a breathing apparatus inside a tank. How many tugs on the lifeline should you give to indicate that you are advancing? | 1 | 2 | 3 | 4 |
B | You are tending the lifeline of a man who entered a compartment using a breathing apparatus. How many tugs on the lifeline indicate the man should advance? | 1 | 2 | 3 | 4 |
C | What is the function of the bypass valve on the self-contained breathing apparatus? | The valve reduces the high pressure in the bottle to about 3 psi above atmospheric pressure. | The valve opens in excessive heat to release the oxygen in the bottle and prevent the bottle from exploding. | In the event of a malfunction in the equipment, the valve can be operated manually to give the wearer air. | When pressure in the apparatus exceeds 7 psi above atmospheric pressure, the valve opens to release pressure. |
C | You are in a tank wearing the self-contained breathing apparatus and you desire to return topside. How many tugs of the lifeline mean to take up the slack? | One | Two | Three | Four |
C | When the mainline valve of a self-contained breathing apparatus is open, the bypass valve should be __________. | completely open | disconnected | completely closed | partially opened |
C | The self-contained breathing device should not be used in which situation? | Oxygen deficient spaces | Fighting fires that produce heavy smoke | Underwater search | Compartments containing poisonous vapors |
C | Where on your vessel shall the recharge for each self-contained breathing apparatus be carried? | Emergency gear locker | Bridge or pilothouse area | The same location as the equipment it reactivates | Where they can be readily found |
C | You are tending the lifeline of a man who entered a compartment using a breathing apparatus. How many tugs on the lifeline indicate the man should back out? | 1 | 2 | 3 | 4 |
C | You are in a tank wearing a breathing apparatus and you desire to return topside. How many tugs of the lifeline mean "Take up slack"? | 1 | 2 | 3 | 4 |
C | What is the minimum period of time that the air supply for a self-contained breathing apparatus required to last? | 10 minutes | 15 minutes | 30 minutes | 45 minutes |
D | You are tending the lifeline of a man who entered a tank using a breathing apparatus. How many tugs on the lifeline indicate that the man should come out immediately? | 1 | 2 | 3 | 4 |
D | You are wearing a breathing apparatus inside a tank. How many tugs on the lifeline should you give to indicate that you need help? | 1 | 2 | 3 | 4 |
D | A 2,000 GT tankship is required to carry __________. | two canister type gas masks if such vessel is authorized to carry grade A, B, C or D liquids | emergency outfits only on an international voyage | one oxygen breathing apparatus with enough lifeline to reach from the open deck to any part of the tanks | two self-contained breathing apparati |
D | Each fireman's outfit and its spare equipment on a tankship must be stowed in a(n) __________. | locked cabinet in the machinery space | unlocked cabinet in the machinery space | location near a fire hydrant | separate and accessible location |