Tankers Class Marker Practice Test

These questions are part of the practice quiz. Start practicing

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