TANKERS FULL QUESTION BANK ANSWERED CORRECTLY & GRADED A+

TANKERS FULL QUESTION BANK ANSWERED CORRECTLY & GRADED A+ What is an advantage of a gate valve over a butterfly valve? A. More compact B. Cheaper C. Less frequent maintenance D. Faster operation-Answer-C What is meant by "thieving" a petroleum cargo? A. Determining the amount of water (if any) in each cargo tank. B. Reducing the gross cargo calculations to net amounts. C. Adjusting the cargo figures to coincide with the draft. D. Siphoning off a few barrels of petroleum for shipboard use.-Answer-A How should pinching of the cargo hose between the vessel and the dock be prevented? A. adjusting the hose supports B. laying out an excess length of hose on deck C. tying off the topping lifts and runners to winch heads D. install hose preventers-Answer-A When loading bulk liquid cargo, what is the FIRST action you should take if a cargo valve jammed open? A. Trip the pump relief valve. B. Run out the vessel or terminal fire hose. C. Call the owner, operator, or terminal supervisor. D. Order the dock man to shut down.-Answer-D To insure proper seating when closing a valve on a tank, what position should the valve be in? A. closed, opened a half turn, and then closed again B. set up as tight as possible by hand C. closed against the stop and the locking pin inserted D. set up tight using a valve wrench-Answer-A Which statement is TRUE concerning insulating flanges? A. They should be inspected and tested periodically to ensure that the insulation is clean and in good condition. B. After the insulating flange is installed, hot work may be performed on deck. C. Switching off a cathodic protection system may be substituted for using an insulating flange D. The measured resistance value after installation should be less than 1,000 ohms.-Answer-A Which of the following describes the fresh air intake of the inert gas system? A. it opens when there is excessive vacuum on the deck water seal B. it allows the inert gas piping to be used for gas freeing the tanks C. it prevents the flue gas from falling below an oxygen content of 3% D. it enables outside air to mix with and to cool the hot flue gases-Answer-B Which factor must be considered when determining the order of loading of dissimilar products through the same piping system aboard a tanker? A. Specific gravities B. Flash points C. Reid vapor pressures D. Contamination of the cargo-Answer-D When discharging an oil cargo, the first consideration is to __________. A. get the bow up B. discharge from the centerline tanks first C. discharge from the wings first D. discharge from amidships first-Answer-A What is NOT a precaution to be taken when topping off? A. Notify the engine room of the procedure. B. Reduce the loading rate. C. Give the operation your undivided attention. D. Maintain communications with the dock man-Answer-A Your tank vessel is loaded down to her marks, and you find that she has too much trim by the stern. To adjust the trim you may __________. A. shift bunkers forward B. load more cargo forward C. add ballast forward D. All of the above-Answer-A When loading a tanker, you should __________. A. load only one tank at a time B. keep a strain on the loading hoses C. close valves by closing them down, reopening one or two turns, and re-closing D. keep the seamen on watch on standby in the mess room-Answer-C When measuring the oxygen content of the cargo tanks prior to loading cargoes requiring vapor recovery, check it __________. A. at three meter intervals from the tank top to the bottom B. one meter from the tank bottom and one meter below the tank top C. one half the ullage of the tank and one meter below the tank top D. one half the ullage of the tank and one meter above the tank bottom-Answer-C Petroleum cargo tanks should not be topped off at deck level when loading on a cold day due to which of the following? A. air pockets may cause the cargo to bubble out of the ullage hole B. a subsequent temperature rise will cause the cargo to overflow C. the increased viscosity of the product requires higher loading pressure which increases the chances of a spill D. the tank valve may be stiff and a spill will occur before the valve can be closed-Answer-B In order to reduce the accumulation of static electricity while loading petroleum products, you should __________. A. start to load slowly B. start to load at maximum pressure C. increase the air flow into the tank D. use the overall method of loading only-Answer-A Fire protection and manning regulations for towing vessels state that the Master or person in charge must ensure that all crew members who have not participated in the drills or received the safety orientation __________. A. receive a safety orientation within 24 hours of reporting for duty B. view a videotape on safety procedures within 48 hours of reporting for duty C. receive a safety orientation or view a videotape before the vessel gets underway D. none of the above-Answer-A When bunkering at a dock which of the following signals must be displayed? A. A yellow flag by day, red light by night B. A red flag by day, red light by night C. A green flag by day, green light by night D. A red flag by day, a blue light by night-Answer-B Your vessel is taking on cargo oil when a small leak develops in the hose. You order the pumping stopped. Before you resume pumping, you should __________. A. replace the hose B. place a large drip pan under the leak and plug the scuppers C. repair the hose with a patch D. notify the terminal superintendent-Answer-A Which of the following terms best defines the spontaneous mixing of a tank's liquid contents when a heavier layer forms above a less dense lower layer? A. flash over B. boil off C. cascading D. rollover-Answer-D It would be prudent to perform which of the following actions prior to the commencement of bunkering? A. plug the sounding pipes B. close the lids on the vents C. plug the vents D. plug the scuppers-Answer-D Which of the following best describes the heat value of a fuel? A. the amount of heat released when a fuel is burned B. the cost per BTU of a fuel C. the temperature to which a fuel must be raised to cause ignition D. the amount of fuel added to a fuel to cause it to burn-Answer-A Ullage measurements are taken from the top of the liquid to which of the following points? A. the base of the expansion trunk B. an above-deck datum, usually the top of the ullage hole C. the base of the ullage port D. a line scribed within the ullage port-Answer-B The piping that routes an oil cargo from the manifold directly to a cargo tank and serves only one tank is known as a __________. A. filler line B. tank drop C. branch line D. cargo fill-Answer-B What is NOT an advantage of centrifugal pumps over reciprocating pumps? A. They pump more cargo in less time. B. They require priming for stripping. C. They are smaller for equivalent pumping ability. D. They are less expensive-Answer-B Which of the following conditions would be hazardous if you were using two centrifugal pumps to discharge a flammable liquid? A. Each pump operating at a different speed and taking suction from a common line. B. Both pumps operating at the same speed and discharging into a common line. C. Each pump operating at a different speed and discharging into a common line. D. Both pumps operating at the same speed taking suction from a common line.-Answer-C