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All of the latest questions and illustrations on "Self-Contained Breathing Apparatus" are in the Online Study.

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Self-Contained Breathing Apparatus

 

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 Self-Contained Breathing Apparatus
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. Self-Contained Breathing Apparatus
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 Self-Contained Breathing Apparatus
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 Self-Contained Breathing Apparatus
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 Self-Contained Breathing Apparatus
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 Self-Contained Breathing Apparatus
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 Self-Contained Breathing Apparatus
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 Self-Contained Breathing Apparatus
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 Self-Contained Breathing Apparatus
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 Self-Contained Breathing Apparatus
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 Self-Contained Breathing Apparatus
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 Self-Contained Breathing Apparatus
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 Self-Contained Breathing Apparatus
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. Self-Contained Breathing Apparatus
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 Self-Contained Breathing Apparatus
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 Self-Contained Breathing Apparatus
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 Self-Contained Breathing Apparatus
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 Self-Contained Breathing Apparatus
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 Self-Contained Breathing Apparatus
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 Self-Contained Breathing Apparatus
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 Self-Contained Breathing Apparatus
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 Self-Contained Breathing Apparatus
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 Self-Contained Breathing Apparatus
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 Self-Contained Breathing Apparatus
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 Self-Contained Breathing Apparatus