Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR
USCG Deck General (Set 29)
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Question 1 of 30
Each hose used for transferring vapors must be which of the following?
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30 MCQs #1 Each hose used for transferring vapors must be which of the following? #2 A tug should not come alongside a tank vessel in way of its cargo tanks while it is loading grade A, B, or C cargo without the permission of the __________. #3 Ullage measurements are taken from the top of the liquid to which of the following points? #4 For the purpose of regulating tank vessels, flammable liquids are liquids which will __________. #5 What is NOT a precaution to be taken when topping off? #6 What best describes for how long a gas-free test is good? #7 A petroleum liquid has a flash point of 135°Fahrenheit. This liquid is classed as a grade __________. #8 A cargo of 10,000 barrels of gasoline is loaded at a temperature of 90°F, and a cargo temperature of 55°F, is expected on this voyage. It has a coefficient of expansion of .0006. How many barrels would you expect to discharge at your destination? #9 What does the LNG cargo pumps capacity depends upon? #10 To determine which grades of cargo a tank vessel is permitted to carry you should __________. #11 You have berthed in a port area with other tank vessels. What signal is displayed by a vessel to indicate it is transferring flammable or combustible liquid cargo? #12 You start a centrifugal cargo pump to discharge cargo. The pump works fine for awhile and then loses suction. What could have caused this? #13 According to U.S. regulations, access to a cargo pumproom in a tank vessel carrying grades C or D liquid cargo must be which of the following? #14 In reference to accidental oil pollution, the most critical time during bunkering is when __________. #15 You have been carrying a liquid with flammable limits of 1% to 7% mixture with air. If your instructions say that no one shall enter the tank if the vapor concentration is over 15% of the LEL, what is the maximum allowable percentage of vapors for men to enter? #16 According to U.S. regulations, which of the following describes the declaration of inspection? #17 What type of vent is required on a barge transporting No. 6 fuel oil? #18 What is meant by "thieving" a petroleum cargo? #19 Your vessel is taking on cargo oil when a small leak develops in the hose. You order the pumping stopped. Before you resume pumping, which of the following action should you perform? #20 Tankers that are in service carrying "sour crudes" are faced with additional problems for their safe operation. One such problem is called "polyphoric oxidation" what does this result in? #21 When inspecting a tank barge to see that it has all the required fire extinguishers and other safety items aboard, which of the following is the best source for determining what is required? #22 The scuppers had been plugged as required at the time an oil spill occurs on deck. After shutting down the transfer, the engine room should first be informed and then __________. #23 On a LNG ship at anchor with cargo onboard, how is the vapor pressure in the cargo tanks controlled? #24 If your asphalt barge has operated more than 12 months in saltwater in the 24 month period since it was last dry-docked, when is it required to be hauled out again? #25 When selecting the fuel oil tanks for the "burn-out" of bunkers during a voyage consideration of all of the following must be taken with the EXCEPTION of __________. #26 Regulations require that cargo pumps in tank vessels carrying grade D liquid cargo shall be isolated from sources of vapor ignition by __________. #27 Which is the MOST important consideration for a tank vessel? #28 Name one major advantage of transporting gas under refrigeration. #29 Open ullage holes in tanks which are not gas-free must be protected by __________. #30 According to U.S. regulations, what is required where cargo pump shafts on tankers pierce bulkheads?
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