QMED Oiler Certification Practice exam

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• In the context of breathing apparatus, what does "demand type" imply?
• How can a cargo tank atmosphere be tested for explosive gases?
• How often must inflatable life rafts be overhauled and inspected at a USCG approved servicing facility?
• In steering systems, which factor is crucial for the performance of axial piston pumps?
• Pyrometers are primarily composed of which two components?
• What typically causes loss of volumetric efficiency in low pressure air compressors?
• Which component in hydraulic systems is essential for filtering contaminants?
• What is the most critical part of bunkering operations that can result in an oil spill?
• What document identifies a chemical and lists all its potential hazards?
• Which of the following symptoms could indicate a defective component in an air compressor?
• What is the ideal way to ensure adequate oxygen for safe entry into a seldomly used cargo tank?
• How can you lower the humidity of air circulated by an air conditioning system?
• What is the basic emergency care for an electrical burn?
• What are the structural hull members extending in a fore and aft direction called?
• What characteristic of fuel establishes the danger point for transferring, pumping, and firing procedures?
• In hydraulic systems, why is it important to ensure a proper seal with gaskets?
• What should be done after boarding a liferaft in terms of survival position?
• Which characteristic allows a pipe coupling to connect pieces of pipe?
• Why are adsorption filters not commonly used in steam turbine or diesel engine lubricating systems?
• What is the primary use of axial piston pumps in mobile machinery?
• What is generally considered when selecting lubrication oil for diesel engines?
• What is a primary advantage of using axial piston pumps in hydraulic systems?
• How must the amount of garbage disposed be recorded on a ship?
• What does an oxygen indicator measure?
• What tool is specifically used for cutting new external threads?
• What maintenance aspect is critical for the longevity of axial piston pumps?
• What is the first step when cleaning a duplex strainer?
• What do you call the end joint formed by adjoining plates in hull plating?
• Which filter/strainer unit allows you to clean the element while leaving the system online?
• What is essential treatment for sunstroke?
• What must be operated during a fire and boat drill while the vessel is underway?
• Which type of hydraulic actuator commonly works alongside axial piston pumps in steering systems?
• Why should small leaks in gaskets be addressed immediately after installation?
• What is a common effect of using dull cutting tools?
• What indicates an overheated bearing in the main propulsion unit?
• What effect does physical exertion have on a person who has fallen into cold water?
• How can bleeding from a vein typically be controlled?
• What type of joint is formed between two plates in the same strake of hull plating?
• What occurs if an axial piston pump is operated at excessively high pressures?
• What issue may occur if a coil-type high-pressure evaporator continuously requires an increase in steam pressure to maintain capacity?
• What prevents over-pressurization of an air compressor intercooler?
• What is typically a characteristic of a hydraulic steering system using axial piston pumps?
• Why do diesel engine vessels usually have independent lube oil systems for the main engine and main reduction?
• How does the design of an axial piston pump influence its operation?
• What is the correct sequence of chest compressions and inflations required for CPR?
• How do you know when the correct torque value is reached on a micrometer torque wrench?
• Which component typically receives the initial lubrication oil in diesel engine lubricating systems?
• What is the first step to ensure a refrigeration unit won’t start while undergoing repairs?
• Which types of bearings are typically used as line shaft bearings?
• Which of the following describes conduction in heat transfer?
• What does the term 5/16 - 24 specifically describe?
• How many milliamps of current through the body is required to produce a condition where most people would suffer ventricular fibrillation?
• What action should be taken if an inflatable life raft is floating in its container while the ship is sinking rapidly?
• To achieve maximum efficiency, a two-stage air compressor is usually equipped with what component?
• In a flash evaporator, where is scale most likely to accumulate due to higher-than-normal temperatures?
• Which component is essential in controlling the flow and pressure outputs of an axial piston pump?
• What can you do to reduce the possibility of capsizing while your survival craft is rolling in heavy seas?
• Which file is best suited for smoothing a larger surface area?
• What type of gauge is capable of measuring and displaying both positive and negative pressures?
• If a hydraulic hose is installed without room for expansion, what could occur?
• What hazards are associated with handling petroleum products?
• Who is responsible for securing all supply switches before working on electrical equipment?
• If a ship is supported on the crest of a wave amidships, which type of stresses is the vessel subjected to?
• What condition indicates that a vessel is unstable?
• In a major personal injury case, what should be included in the first aid treatment?
• Under what condition can distilled water be discharged into a potable water tank?
• Where would you typically expect to find striking plates in a ship?
• What is the role of the follow-up gear in an electro-hydraulic steering gear?
• Which screwdriver is specifically used for precision assembly of small parts?
• What type of contaminants do strainers specifically target in hydraulic systems?
• What tool can be used to determine the main bearing clearances in a propulsion diesel engine?
• What should be inspected before using a hacksaw?
• In a sanitary system, a pneumatic pressure tank is installed to do what?
• In which type of evaporator is the control of brine density least important?
• To ensure main propulsion turbine bearings are receiving proper lube oil supply, you should check the?
• How does the design of roller bearings contribute to their load capacity?
• How can you best prepare for potential atmospheric hazards when entering a confined space?
• How is packing in the pump feed stuffing box typically lubricated?
• What potential issue arises from heating of the air exiting the cylinders of a low pressure air compressor?
• What indicates the size of a hose used in a hydraulic system?
• What type of tap can be used for internal threading when the work permits?
• What is the primary purpose of the center head of a combination square?
• What can be a result of a dirty lube oil strainer?
• If you find a person lying prone and not breathing while in contact with an electrical wire, what should you do first?
• If uncertain about what type of gasket material to install in a pipeline, what should you do?
• What material is primarily used to manufacture piping with varying strength classifications?
• What is one of the main risks associated with ungrounded power tools?
• What effect does air in the cooling water system have?
• What does GM represent in terms of stability?
• What is a primary requirement for fuel oil transfer systems on diesel propelled vessels?
• What is the heat removed from the refrigerant in the condenser of a refrigeration plant known as?
• What can be the outcome of not selecting the proper size intake filter for an air compressor?
• Which method is effective for improving a vessel's stability?
• What pressure reading gauge measures two pressures and displays the difference between them?
• Babbit is primarily used for what purpose in engineering?
• What safety equipment must always be present on a lifeboat?
• Which of the following is NOT a characteristic of axial piston pumps?
• Why is a closed fresh water cooling system commonly used with marine diesel engines?
• An ullage reading measures the distance from which point?
• What does the station bill provide information about during abandonment?
• What is the main function of the engine-driven hydraulic pump in an auxiliary diesel engine hydraulic starting system?
• What is considered the best gasket material for cargo fuel oil lines?
• What are structural hull members installed athwartship typically referred to as?
• What can be effectively removed from diesel fuel using a centrifuge?
• In the context of vessel construction, what does the term 'sheer' refer to?
• What is the determining factor of strength in a flexible rubber hydraulic hose?
• What is a cofferdam?
• Can freshwater be obtained from fish in a survival situation?
• What should be done if there is uncertainty about gasket specifications in a hydraulic system?
• What tool is recommended for removing a tapered rolling bearing from a shaft?
• What type of hydraulic pump is most commonly used in steering systems?
• What does the designation 'schedule 80 extra strong' refer to?
• What is the inner bottom of a ship primarily comprised of?
• What is the space comprised of compartments between the inner and outer bottoms of a ship called?
• What is the first step to take if a bolt or stud breaks off flush at the surface?
• What is the general use of a grease gun?
• How does moisture affect air line lubricators?
• In a hydraulic starting system, where is the accumulator typically located?
• How can a dirty diesel engine oil filter be effectively detected?
• What is the recommended spacing for anchoring hydraulic tubing to prevent leaks?
• A tank or compartment is considered gas free when there is an absence of dangerous concentrations of what?
• After the first 24 hours in a lifeboat, how much water should each person be permitted daily?
• Which type of compressor is generally more efficient in terms of performance?
• What is the main purpose of lubricating oil in a diesel engine?
• What does the term counter flooding refer to?
• Which material is commonly used for the dynamic seal in mechanical seals on centrifugal pumps?
• What is the purpose of strainers in hydraulic systems?
• What should you do if the painter on an inflatable life raft is taut due to the ship sinking rapidly?
• What can occur when using a file without a handle?
• Which pipe size is not commonly used in hydraulic systems?
• Where can you find a list of lifesaving equipment on board a supply boat?
• What happens when sawing faster than 40 to 50 strokes per minute with a hand-held hacksaw?
• If you have to abandon ship and enter a liferaft, what should be your primary course of action?
• What should be used to descale steam coils in a high-pressure evaporator for saltwater service?
• What is true concerning lube oil coolers?
• What is the purpose of the packing ring in the floating end of a shell and tube type cooler?
• The A strake is located adjacent to which part of the vessel?
• What is the best tool for determining the threads per inch of a bolt or screw?
• What are the vertical transverse structures found in a double bottom called?
• Where is the metacentric height measured from?
• Where does the refrigerant absorb latent heat of vaporization?
• What component does the seal piping obtain liquid from in a pump system?
• Why do some heavy-duty screwdrivers have a square shank?
• Why do roller bearings have a higher load capacity compared to ball bearings?
• What is the first step in first aid treatment for small cuts and open wounds?
• Which gasket material is commonly used on high-pressure steam flange joints?
• Heated water under pressure is converted into vapor by what method?
• How many screw threads per inch does a Standard National Coarse 1/2 bolt have?
• If you are forced to abandon ship and enter a liferaft, what should your main course of action be?
• What effect do broken valve strips have in an operating low pressure air compressor?
• According to coast guard regulations, what is required for gears, couplings, flywheels, and other machinery?
• In a chilled water air conditioning unit, how can the refrigerating effect of the primary refrigerant be increased?
• What is a key safety precaution before entering a confined space like a tank?
• What is the primary purpose of stiffeners in a vessel?
• What has the greatest impact on the volumetric efficiency of an operating reciprocating air compressor?
• Using a sea anchor with your survival craft will primarily serve to:
• Upon hearing the fire and emergency signal, what action should you take immediately?
• What are the typical symptoms of sunstroke?
• A knocking sound from one cylinder of an operating air compressor is likely to indicate what issue?
• What is true about portable power tools?
• When fighting a machinery space fire, how should you operate a fixed CO2 system?
• What should be done to maintain the effectiveness of a hacksaw blade?
• A pipe coupling features what characteristic?
• How is tubing typically sized in hydraulic systems?
• What is another name for a self-contained breathing apparatus?
• When do most enclosed lifeboats or covered survival capsules automatically right themselves after capsizing?
• A crew member has suffered frostbite to the toes. Which of the following is not an acceptable first aid measure?
• When positive stability exists, what does GZ represent?
• During an abandonment drill, who should be the first person to arrive at the survival craft?
• Which of the following factors can be negatively affected by moisture in a refrigeration system?
• Which basic dimensions are commonly used in describing bolts?
• What effect does flooding any compartment in a ship have on buoyancy?
• How does the class of fit affect the ease of turning a nut and bolt connection?
• Which component is most often used to ensure air flow in air compressors is not restricted?
• What emergency equipment must be in every lifeboat according to regulations?
• Which tool is most appropriate for marking straight edges?
• What is the primary purpose of a splint in first aid?
• On a cargo vessel, when must fire and boat drills be conducted after crew replacement?
• After installing a new hydraulic pump into a system, what should be frequently checked?
• In a lifeboat, how much water should be rationed for each individual after the first day?
• What might cause surging of the feedwater supply to a flash evaporator?
• Yawing refers to the angular motion of the vessel about which axis?
• Where is energy primarily stored in a hydraulic system during operation?
• What is a major advantage of the demand type self-contained breathing apparatus?
• What is the effect of moving weight from the main deck to a position lower in the vessel?
• How do the lights on the outside of the canopy of an inflatable life raft operate?
• What is the result of bearing crush when applied to diesel engine main bearings?
• What dual purpose does the operating cord on an inflatable life raft serve?
• What indicates a possible heat stroke in a person?
• What are the typical duties outlined for crew members in a lifeboat station during abandonment?
• How does partial flooding of a single ship compartment, with free communication to the sea, affect the free surface effect?
• Where can you find the procedures for reporting oil discharges in the water?
• What should be done for a person suffering from possible broken bones and internal injuries?
• How is first aid defined?
• What mode of heat transfer does not necessitate direct contact between a warmer and cooler substance?
• Under what circumstances can equipment be operated when it is tagged with danger tags?
• Where will the jackknife stored on an inflatable liferaft typically be located?
• Which type of bearing installation is typically subjected to swinging motion?
• What is the most effective first aid treatment for chemical burns?
• When replacing a dry type intake filter on an air compressor, what is an important consideration?
• What could cause persistent leakage in piston rod packing on a reciprocating steam pump?
• Which component is primarily responsible for delivering oil to a diesel engine?
• Which gauge is most likely used for a pump suction pressure gauge application?
• What is the term for the horizontal fore and aft movement of a vessel?
• What is the normal temperature range of the water in a closed type expansion tank?
• How is water leaking from the pump packing gland kept away from the bearing housing?
• What is the main source of lubricating oil contamination in a diesel engine's crankcase?
• Which item is NOT part of standard lifeboat equipment?
• Which fluid property is most critical for the efficient operation of axial piston pumps?
• What should be done to clean a small cut after stopping the bleeding?
• As a vessel sinks to a depth of 15 feet, how does the hydrostatic trip release the liferaft container from its cradle?
• What is the term for the degree that the teeth of a hacksaw blade are pushed out from the center?
• If you hear a continuous blast of the whistle and general alarm for more than 10 seconds, what should you do?
• Does an immersion suit help reduce the rate of body cooling in cold water?
• When broadcasting a distress message from a survival craft, what critical information must you provide to rescuers?
• Double cut files are best used for which type of work?
• What is the term for the strake next to the keel?
• Which of the following is part of the required equipment for a lifeboat?
• If the water level is rising in the bilge of a survival craft, what is the first action you should take?
• What is one of the acceptable means of closure for ballast and fuel oil tank vents?
• If a higher-than-normal water level is observed through the inspection port of a flash evaporator, what should be suspected?
• How is a constant pressure range maintained in the potable water system of many vessels?
• Which type of filter is known to deplete additives in lubricating oil?
• What should you ensure is operating before entering a cargo pumproom?
• Which of the following is NOT a typical hazard when working with hand tools?
• How can personnel be protected from the rotating parts of machinery?
• When selecting a hydraulic pump for a steering system, which factor is least important?
• What distinguishes the Phillips screwdriver from the Reed and Prince type?
• What is the effect of thermal expansion on piping systems?
• If strakes are labeled A through K, which strake is referred to as the K strake?
• What precaution should be followed when using a chisel that has a mushroomed head?
• The primary function of a heat exchanger is to:
• How is the latent heat of condensation removed from a refrigerant in a normal refrigeration cycle?
• Once the daily ration of drinking water in a survival situation is established, what should your drinking routine include?
• What do differential pistons provide in air compressors?
• When should a life jacket be worn?
• What is the primary purpose of swash bulkheads in a ship's tank?
• What is the most common cause of inadequate reciprocating bilge pump discharge?
• Stability is determined by the relationship of which two points?
• In a compression type automatic grease cup, what mechanism forces the lubricant into the bearing?
• The sorting of accident victims according to the severity of their injuries is known as what?
• To prevent oil from escaping into the sea when ballasting through the cargo piping system, what should you do first?
• If a victim is unconscious, what should you first look for?
• How do flame screens installed on sewage system tank vents prevent explosions?
• What is the proper lubrication method for journal bearing oil grooves?
• Which type of Marine Sanitation Device (MSD) is used solely for the storage of sewage and flush water at ambient air pressure and temperature?
• Which component of a hydraulic hose primarily determines its overall strength?
• What problem can cause fluctuations in water pressure within a closed cooling water system?
• A common symptom of insufficient lubrication would be?
• What materials are commonly used to make flanged joints leak-proof in hydraulic systems?
• In a hydraulic system, how does flexible hose react under pressure?
• Which of the following is a necessary procedure when abandoning ship by lifeboat?
• Which of the following is an appropriate response to traumatic shock in first aid?
• Where do fuel vapors tend to accumulate in the engine room?
• What action should be taken if a chisel has a mushroomed head?
• Which type of file is characterized by coarsely spaced teeth?
• How can an overturned inflatable liferaft be righted?
• What type of joints compensates for movement in steam piping due to temperature changes?
• How should puncture leaks in the lower tubes of an inflatable liferaft be first addressed?
• If a matching nut and bolt have a class 4 fit, how will they perform when being turned by hand?
• What is the primary function of absorbent filters?
• What determines the lengths of files?
• What might cause a fluctuating and unsteady vacuum in an evaporator?
• A multi-stage flash evaporator may fail to produce consistently pure distillate if what condition is present?
• What part of the ship's structure typically experiences the highest stress?
• Which of the following is used to keep water away from the bearing housing in pumps?
• What happens to a flexible hose under pressure in a hydraulic system?
• What should be done to properly fit a new gasket to a flange?
• True or false: A small leak in an immersion suit will destroy its protective qualities against hypothermia.
• When repacking a reciprocating pump, how should the packing rings be arranged?
• In a two-stage flash evaporator, how do the operating conditions in the second stage compare to those in the first stage?
• What is a combustible gas indicator designed to detect?
• What method is primarily used to lubricate bearings in a small high-speed diesel engine?
• Which of the following conditions may require tagging equipment with danger tags?
• Which of the following factors contributes to bearing performance in diesel engines?
• What is the primary method of detecting flammable gases with a combustible gas indicator?
• What problem could produce a high absolute pressure within a flash type evaporator?
• For piping cross sections over 12 inches, sizing is based on what?
• What is an essential property of lubricants that affects their performance?
• When securing a flash type evaporator for an extended period, what is the recommended action?
• Two important aspects of proper diesel engine lubrication are:
• What tool is used to true a grinding wheel?
• What does the 'NC' in 1/4-20NC signify about the bolt?
• During an oil transfer, who is responsible for ensuring that the posted transfer procedures are followed?
• What is the function of a garboard strake on a vessel?
• A well-lubricated bearing surface typically appears as?
• Fuel piping should be regularly inspected for leaks. Which location poses a significant fire hazard?
• Short cycling of the potable water pump is avoided by the proper use of what?
• How does good housekeeping on a vessel prevent fires?
• Vertical support members used to uphold bulkheads are referred to as what?
• What is the primary function of an air compressor intake filter?
• When is it appropriate to use a taper tap for threading?
• What is the primary use of needle-nosed pliers?
• What is the purpose of shore in structural support?
• How do you convert Celsius to Fahrenheit?
• Why is it especially dangerous to enter a tank that has been sealed and unventilated for a long time?
• What is the method of applying the hand brake of a lifeboat winch?
• What indicates that your vessel is under distress?
• What unit of measure is typically used to express volumes of garbage disposal on ships?
• When at your lifeboat station, what do two short blasts of the ship’s whistle indicate?
• What type of pressures are typically regulated by a moisture separator in an air line system?
• How may a distress signal be used?
• When replacing ball bearings on an electric motor shaft, what is the recommended method?
• In merchant ship construction, what does the term 'scantlings' refer to?
• What current level is known to cause respiratory paralysis if passed through the body?
• Which of the following statements best describes a butt joint?
• In a typical two-stage, low pressure air compressor, what is the path of air?
• What happens if the inlet pressure of an axial piston pump is too low?
• What is the purpose of providing saltwater to a refrigeration system?
• When should food or water be provided to survivors after boarding the lifeboat/liferaft?
• What is the best indicator that a bearing is being properly lubricated?
• What is a safety feature found on all inflatable life rafts?
• If the buoyant force on a ship's hull is equal to or greater than its displacement tonnage, what will happen to the ship?
• What material is typically used to manufacture the seams of inflatable life rafts to ensure water resistance?
• In terms of safety of an engine room watch, which alarm response is considered most critical?
• What is commonly referred to as the rattail file?
• What type of grease is most commonly used aboard ships?
• How is copper sheet metal typically annealed for use as a gasket?
• What is the key purpose of lubrication in diesel engines?
• What does an oxygen indicator detect in a confined space?
• Why are petroleum vapors considered dangerous at all times?
• What is the primary function of a lifeboat?
• Which gas is considered the most dangerous to personnel safety in confined spaces?
• What type of wrench completely surrounds a nut or bolt head?
• How is the speed of a radial piston hydraulic motor controlled?
• What does the nominal pipe size indicate when renewing sections of pipe in a hydraulic system?
• In ship construction, what are the hull frame members extending athwartship referred to as?
• How can you locate your abandon ship post?
• Filters are installed ahead of air line lubricators primarily to remove what?
• In addition to checking the lube oil sump level and temperature, what else must be checked for a line shaft steady bearing?
• What best identifies the operating principle of a flash type evaporator?
• What role does an intercooler play in a two-stage air compressor?
• Where should approved buoyant work vests be worn on tank vessels?