Tankers Class Marker Practice Test

These questions are part of the practice quiz. Start practicing

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