Tankers Class Marker Practice Test

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• Sour crude oil contains high quantities of which substance?
• What is the primary goal of a segregated-ballast system?
• What is a common reason for loss of suction in pumps?
• Why should insulating flanges be periodically inspected and tested?
• What is the required color scheme for marking the vapor manifold?
• After transferring all dirty ballast to the slop tank, what should be done before discharging through the oily water separator?
• Which of the below listed pumps could be operated with the discharge valve closed for a short period of time?
• Do you need to test the atmosphere before entering a confined space?
• Joseph Isherwood designed the following framing system?
• The standard unit of liquid volume used in the petroleum industry is a __________.
• Which statement about entering into a tank which has been sealed for a long time is TRUE?
• Under the Oil Pollution Act of 1990, which type of tankship must have an approved vessel response plan?
• Liquids with a flash point of 150°F and above are classified as which grade?
• What must be done to the manifold during problems arising from cargo discharge?
• What is another characteristic that is an advantage of a butterfly valve over a gate valve?
• What is not typically found on a cargo information "MSDS" card?
• The performance of cargo pumps is monitored through use of what tools?
• What term is used to describe the range of gas or vapor concentrations that can ignite?
• What is required to prevent electrostatic buildup in tanks when using crude oil washing systems?
• What should be observed when arriving at the Loading Port and tanks are in an inert condition?
• Which cleaning method is capable of generating electrostatic charges within a tank?
• Why is priming necessary for a centrifugal bilge pump?
• A segregated-ballast system consists of which components?
• What type of tanker is specifically designed to carry chemicals and other specialty products?
• Which of the following valves can be set to automatically control the flow of inert gas to the deck distribution system?
• What is the pipe used to connect two separate piping systems on a tank vessel?
• On which type of pump would you typically find an impeller?
• Which risk is associated with the transfer of cargo?
• In reference to accidental oil pollution, when is the most critical time during loading?
• What is the smallest percentage of vapor in air that can form an ignitable mixture?
• What is the primary function of mast riser or king post vents on a tanker?
• Which of the following describes intrinsically safe equipment?
• What does a horizontal oil tight deck in tankers help facilitate?
• What document must be completed by the vessel and shore-side facility prior to cargo operations?
• During a pre-transfer conference, which of the following is not required to be discussed?
• In the event of an oil spill, which organization should be contacted promptly?
• What does TLV-TWA stand for?
• Which action is critical after the oxygen level has been determined before crude oil washing?
• A condition "that poses a threat of exposure to airborne contaminants when that exposure is likely to cause death or immediate or delayed permanent adverse health effects or prevent escape from such an environment" is called?
• A deepwell pump is classified as which type of pump?
• 1 cubic meter is equal to:
• What is the primary purpose of a vapor indicator?
• When the inert gas system cannot maintain a positive pressure, what action should be taken regarding cargo operations?
• True or False: The statement regarding gas-freeing involving ventilation is accurate.
• What is the term for cargo tanks that do not contribute to the vessel's structural integrity?
• Which materials may be separated and discharged during 'load on top' procedures?
• What is a disadvantage of working with butterfly valves?
• Consistently operating the vessel in an under ballasted condition can lead to:
• What regulation mandates double hulls and vessel response plans for oil spills?
• The "Chemical Data Guide for Bulk Shipment By Water" was developed by which organization?
• The __________ of a flammable liquid is the lowest temperature at which the liquid will produce sufficient vapor to ignite and continue to burn.
• Which statement about the inert gas system is TRUE?
• What describes the function of pressure vacuum relief valves?
• What does the Pour Point refer to in maritime operations?
• Are final checks prior to discharging cargo important for safety?
• Which of the following defines a confined space?
• Which factor does NOT influence the effectiveness of cleaning procedures on a vessel?
• What type of deck seal is commonly found aboard tank vessels?
• What is the permissible exposure limit (PEL) to benzene?
• Which method is not suitable for tank cleaning?
• What does the red light on a tankship indicate?
• How can small oil spills on deck be prevented from going overboard?
• A labor extensive means of obtaining "positive segregation" between cargoes would be?
• What is NOT considered an advantage of centrifugal pumps over reciprocating pumps?
• Why is it important to monitor the capacity of tanks on a tankship?
• What should be the primary consideration when dealing with a cargo tank overfill alarm?
• What factors influence the effectiveness of the load-on-top procedure?
• What could happen if a PV breaker does not refill with liquid before operations resume?
• What is the main goal of ballast water exchange measures?
• What action should be taken after discovering a small leak in the discharge hose?
• What is a characteristic of all centrifugal cargo pumps?
• What minimum protective clothing must be worn while sampling hazardous cargo on a tankship?
• What is the primary function of the fresh air intake within an inert gas system?
• What is the maximum allowable pressure in a cargo tank during the loading operation?
• Why is ventilation important during tank cleaning?
• Which of the following is NOT typical of double-hulled tankers?
• What is the purpose of pressure-vacuum relief valves?
• When loading cargo, which valve should be opened last?
• Which equipment is typically used to monitor gas levels in confined spaces?
• What are the usual symptoms of cavitation in a centrifugal pump?
• Which of the following can serve as a barrier separating cargo and non-cargo areas?
• Which of the following consequences can be a result of benzene exposure?
• What is the primary risk associated with an overfill of a tankship?
• At what capacity does a tankship overfill alarm typically activate?
• What type of units does an articulated tug and barge connection provide for safe offshore operation?
• Carbon monoxide is best described as what?
• What is the best instrument for establishing a safe working area before welding in a confined space?
• What is the primary purpose of inert gas systems aboard tank vessels?
• Which statement about piping details is incorrect?
• Which equipment is known for controlling pressure in a system?
• What system is permitted by Coast Guard Regulations for fire prevention and inerting cargo tanks on tank vessels?
• Why is monitoring the temperature of the cargo important during transport?
• Which regulation emphasizes pollution prevention from ships?
• Under the Oil Pollution Act of 1990, what construction requirement must new tankers in U.S. waters meet?
• All of the following steps are taken in starting a centrifugal pump, EXCEPT:
• What method is used to supply inert gas to the cargo tanks from a flue gas system?
• Why must the hull of a tank vessel be closely monitored?
• During the oil discharge process, when should the main cargo pumps be turned off?
• The purpose of an inert gas system on a tanker is to:
• How long before loading or discharge operations should high-level alarms be checked?
• Which component is typically used to safely contain oil spills onboard a tanker?
• What items are typically checked and recorded on the Declaration of Inspection (DOI)?
• Insulating flanges minimize the dangers arising from __________.
• What type of tank do not form part of the vessel structure?
• What legislation adopted annexes I, II, and V of the MARPOL agreement into national rules?
• What does the acronym DOI stand for in a marine context?
• If problems arise during the discharge of cargo, what should the Person in Charge (PIC) do?
• Which of the following is a component of effective discharge containment?
• Which of the following is a safety measure when discharging cargo at sea?
• What does point "C" on the flammable range diagram indicate?
• Where can the complete details of a crude oil washing system be found?
• What is the STEL (short term exposure limit) for benzene?
• When discharging oil from a tankship, what is done with the remaining oil after the main pumps have pumped out the tank's contents?
• What does the oxygen indicator measure in a confined space?
• What is one of the primary risks when performing gas-free tests?
• Is it true that international regulations concerning pollution by oil are contained in Annex I?
• When is ballast water most likely to be introduced into empty cargo tanks?
• Which Annex of MARPOL governs sewage discharges from ships?
• During loading operations, which condition is critical to ensure safety?
• An inert gas system is designed to reduce the possibility of tank explosions by what means?
• Who is responsible for signing the Declaration of Inspection during a cargo transfer?
• What is the primary function of the deck water seal in an inert gas system?
• What does MSDS stand for?
• What is true about composite hoses used in tankers?
• What is a critical element of the inert gas system in preventing explosions?
• Which of the following is NOT an advantage of a double-hull tanker?
• Before welding can be performed on a cargo tank that carried flammable products in US ports, what must be obtained?
• What does the term "head" refer to when applied to a pump?
• What can result from excessive air in the suction line when stripping a tank?
• What method can help reduce static accumulation when loading?
• Gasoline with a flash point of -45°F and Reid vapor pressure of 9.0 PSI would be classified as which grade?
• Which of the following is true regarding the maintenance costs of double hull and single hull tankers?
• Which of the following is NOT a characteristic of a confined space?
• What is true regarding the combined capacity rating of IG blowers in a vessel?
• How is a tank ship characterized?
• What are "drugstore" vessels?
• Tanks designed to have a pressure above 10 pounds per square inch are?
• What is a critical element of maintaining stability in a tanker?
• What do the emergency shutdown requirements of U.S. regulations apply to?
• What is the purpose of a sounding tube in a tank?
• What defines arrival ballast according to the USCG?
• Why is it important to keep tank atmospheres diluted in a tanker?
• What precaution must be taken with the source tank when using a crude oil washing system?
• What are the three basic components of a cargo hose?
• Under what condition is sampling of hazardous cargo required to be performed?
• When should you begin to pump out slops during the Butterworth tank cleaning process?
• What is the maximum allowable oxygen content in ship's cargo tanks, inert gas piping, and the vapor recovery system?
• How is a pump defined in the context of fluid dynamics?
• What is one of the advantages of centrifugal pumps over reciprocating pumps?
• What will NOT increase friction of a liquid flowing in a pipe and cause a loss of suction head?
• Entries shall be made in the Oil Record Book on a tank-by-tank basis with regard to all of the following except:
• What is the primary purpose of the relief valve on a cargo pump?
• What action should be taken if the pressure in a tank being discharged drops below the allowable limit?
• What should be done before using portable machines to clean areas not reached by fixed machines?
• What factor would NOT cause a centrifugal cargo pump to lose suction?
• What action should be taken if the overfill alarm is triggered on a tankship?
• In which year did MARPOL enter into force?
• What does "thieving" a petroleum cargo refer to?
• What typically causes cavitation in a centrifugal pump?
• What pivots on a transverse axis provided by pins allowing the tug to pitch independently from the barge?
• What is the purpose of the screen fitted in fuel oil tank vents?
• Each inert gas system gas main must have an automatic shutdown valve at the outlet of the gas production plant. When must this valve close automatically?
• When is a vessel required to perform a Declaration of Inspection?
• What minimum strength criteria must a vapor hose meet?
• What is autoignition temperature?
• What is a distinguishing feature of an eductor compared to other pumps?
• How can loss of suction in a pump be avoided?
• Which characteristic is an advantage of a butterfly valve compared to a gate valve?
• A marine chemist is accredited by which organization?
• Which step is typically not included when gas-freeing a tank?
• Which organization is primarily responsible for oil spill response in U.S. waters?
• What is the potential hazard when cleaning tanks after carrying crude oil?
• How is the weight of the portable tank cleaning machine suspended?
• In case of accidental ingestion of a toxin, where can guidance be found?
• Do vessels with segregated ballast systems need a Ballast Plan?
• What does the screen fitted on cargo tank vents primarily prevent?
• What is a present day concern regarding contaminated ballast water?
• What does TLV-STEL refer to in workplace exposure limits?
• Ballast water that does not produce a visible sheen when discharged defines:
• What factor must be considered when determining the order of loading dissimilar products through the same piping system?
• A loss of suction in a stripping operation can lead to what issue?
• Gasoline with a flash point of -45°F and a Reid vapor pressure of 6.9 PSI would be classified as:
• Type 3 barge hulls are designed to carry products that require what?
• What type of gas systems are utilized to combat the risk of fire in the cargo tanks of tank vessels?
• What must be in place before transferring oil?
• Which Annex of MARPOL requires ships to carry an International Oil Pollution Prevention (IOPP) certificate?
• What is the purpose of a reducer in piping systems?
• What is NOT a requirement for the safe use of a crude oil washing system?
• How should cargo hoses used for oil products be marked?
• What is the consequence of failing to respond to an overfill alarm?
• What do chemical codes classify cargo tanks based on?
• Which signal is required to be displayed at night while discharging at a dock?
• Which Annex of MARPOL addresses air pollution from ships?
• What is a main concern of OBO vessels?
• What should be done if there are debris or foreign material in the fuel oil tank?
• After the initial cleaning of flue gas in an inert gas system, the gas is passed through what device for final cleaning?
• Which of the following statements about a gate valve is false?
• What is NOT the responsibility of the PIC during cargo operations?
• Which of the following statements is FALSE regarding tankers?
• What is commonly included in a barrier aside from a void space?
• What is the short-term exposure limit (STEL) for benzene?
• Which component of the inert gas system is designed to relieve sudden large overpressures?
• The discharge of oil within the waters of the United States is strictly prohibited as conveyed in the wording of the placard that is required to be displayed on board vessels by the __________.
• What does maintaining tank cleanliness help to ensure?
• Which organization enforces U.S. pollution regulations for ships?
• Which of the following is used to test a tank for oxygen content?
• Under what condition do cargo transfer operations on a tank vessel NOT need to be stopped?
• Before crude oil washing a tank, the oxygen content must be measured at what distance from the deck?
• Which of the flash points would indicate a grade D combustible liquid?
• Which statement is true concerning inert gas systems on tank vessels?
• When is the best time to test the overfill alarm on a tankship?
• For combustion to occur inside a piping system, which element must be present?
• Which of the following is an example of a grade D product?
• What process involves mechanically ventilating a compartment with fresh air to remove vapors and inert gas?
• What safety precaution should be taken when stripping oil from a tankship?
• In a tanker, what is the primary role of the ballast system?
• What is the primary function of an Inert Gas System on a tanker?
• What is one major risk associated with improper loading on tankers?
• How long is a gas-free test valid for?
• What happens if the gas concentrations in the tank exceed the lower explosive limit?
• True or False: The PEL for benzene is a guideline for safe exposure levels.
• What is a common practice to ensure compliance while discharging oil?
• What can be a consequence of not properly stripping oil from tanks?
• Which landmark U.S. legislation called for new tankers to be constructed with a double hull?
• What does the term 'load on top' refer to in shipboard operations?
• Which method is commonly used to ensure that no residual oil remains after the cargo transfer?
• The effectiveness of the double hull tanker design is limited to what type of casualties?
• What is a likely reason for a sharp pressure drop during a discharge operation?
• What is the purpose of ballast water exchange in tankers?
• What oil content level in ballast water is considered clean?
• What is a necessary component of an emergency shutdown system on a tanker?
• What is the permissible exposure limit (PEL) for benzene?
• What is the minimum level of oxygen that should be present before entering a confined space for repair work?
• Which listed function is the purpose of a gas scrubber in an inert gas generation system?
• What does Reid Vapor Pressure measure?
• What scenario could necessitate a shutdown by the Person in Charge (PIC)?
• Which statement is TRUE regarding combustible gas indicators?
• A benzene regulated cargo is any product containing:
• What document includes the pre-transfer checklist that needs to be signed by the Person In Charge (PIC)?
• According to MARPOL, what is the maximum allowed oil content in ballast water?
• A tank barge is categorized by the Coast Guard as?
• What type of ballast refers to seawater introduced into cargo tanks after cargo discharge?
• True or False: Proper support of a cargo hose requires the use of slings or saddles.
• What is the purpose of a pressure relieving valve during operations?
• Which term refers to the depth of a petroleum product in a tank?
• What term describes the tendency of oils or chemical products to emit flammable vapors?
• What is a key element of effective inert gas systems related to discharge rates?
• Where should ballast water exchange take place?
• Which organization sets international standards for oil pollution prevention and response?
• What major waterway influenced the increasing size of tankers due to interruptions in a vessel's ability to transit?
• Poisoning by toxic liquids can occur through:
• Which of the following measures is NOT effective in reducing static buildup?
• Which condition would most likely prompt a check of the DOI?
• What characterizes a mid-deck design in a tanker?
• Which Annex of MARPOL deals with garbage discharges from ships?
• What is the term for the smallest concentration of a gas detectable by most individuals through smell?
• In the context of tankship operations, what does "stripping" refer to?
• Which term is not considered a "discharge" under U.S. pollution regulations?
• Acute exposure to benzene can cause which of the following effects?
• The combined fan discharge rate in an inert gas system is related to what?
• If a liquid-filled PV breaker has relieved a vacuum in a tank, what must be done before continuing operations?
• All of the following are parts of a rising stem gate valve assembly except?
• Which of the following statements concerning deepwell cargo pumps is correct?
• Which types of ventilation are recognized in tank cleaning processes?
• What type of tanker is designed to carry hydrocarbon products, chemical products, and other liquids?
• Which of the following is a requirement for safe tank cleaning operations?
• Three methods of interconnecting cargo systems at the manifold on deck include?
• What is the primary purpose of a ballast system in a tanker?
• What is the process in which the contents of a facility pipeline can be cleared toward the vessel's cargo tanks at the conclusion of a loading operation?
• What is the MOST important consideration for a tank vessel?
• Which Annex of MARPOL requires ships to possess an International Air Pollution Prevention (IAPP) certificate?
• What is typically included in safety procedures discussed during a pre-transfer conference?
• Which of the following actions is crucial for preventing tank overfills?
• What is the function of the ballast water management plan?
• What type of ballast water system is completely separated from cargo and fuel systems?
• Which cargo operations must the PIC prioritize during loading and unloading?
• What combination of tasks is expected during the 'load on top' procedure?
• Which of the following is NOT a concern for an OBO vessel?
• Dirty ballast may be handled concurrent with cargo operations?
• On tankers with manually operated tank valves, which type of valve is most commonly used?
• What additional advantage does crude oil washing have compared to water washing?
• What type of liquid is used in the liquid P/V breaker?