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A dry break coupler located inside the hose will close automatically to prevent fuel from spilling onto the "hot pad" if a hose separates from the nozzle during a hot refueling operation.

The effectiveness of the high-vacuum pump depends on the oil seal between the piston and inside casting of the pump chambers. This is because the oil seal prevents any leakage of air or gas from the pump chambers, allowing the pump to maintain a high level of vacuum. Without a proper seal, the pump would not be able to create and maintain the necessary level of vacuum for its intended operation. Therefore, the oil seal is crucial for the pump's effectiveness.

The given correct answer for this question is 300 gallons per minute (gpm). This means that the defueling pump of the Beta-International R-12 Hydrant Servicing unit is capable of removing fuel at a rate of 300 gallons per minute.

The maximum allowable pounds per square inch (psi) of fueling nozzle pressure used with the Beta-International R-12 Hydrant Servicing unit is 55. This means that the fueling nozzle pressure should not exceed 55 psi when using this specific unit.

The correct answer is AFI 91-302, Air Force Occupational and Environmental Safety, Fire Protection, and Health Standards. This directive requires that an effective safety program be established within the fuels flight.

Falling is the principal cause of disabling injuries to office workers. This could include slips, trips, and falls from heights or on the same level. Falls can occur due to various reasons such as wet floors, uneven surfaces, loose carpeting, or inadequate lighting. Office workers may also fall while using ladders or step stools to reach high shelves or while navigating stairs. These falls can result in serious injuries such as fractures, sprains, or head injuries, which can lead to temporary or permanent disability. Therefore, it is crucial for employers to implement proper safety measures to prevent falls in office environments.

When driving a fuel servicing vehicle while approaching a taxiing aircraft at night, it is important to stop the vehicle to ensure safety. Turning off the headlights is necessary to prevent any potential hazards or distractions caused by the lights. This helps to avoid blinding the pilots or ground crew and allows them to clearly see and navigate the area.

In instances where security fences are not provided around fuel storage areas, signs will be posted 50 feet away from diked areas, tank vents, low point drains, and lateral control pits.

The correct answer is 12232. This is because the date wheels on an imprinter should be set to the day, month, and year of the desired date. In this case, the date is 20 August 2012. So, the first wheel should be set to 1 (for the 20th day), the second wheel should be set to 2 (for the 8th month), and the last three wheels should be set to 232 (for the year 2012). Therefore, the correct setting is 12232.

During electrical storms, it is unsafe to perform certain operations due to the risk of lightning strikes. Transfer operations, base service station issues, and commercial pipeline receipts may all continue during electrical storms as they do not involve the use of fill stands. Fill stand operations, on the other hand, typically involve the use of electrical equipment and can pose a higher risk during storms. Therefore, fill stand operations are the only operation that may not continue when electrical storms are within 5 nautical miles of the servicing area.

When someone is splashed with cryogenic liquid, it is important to wrap the exposed area in a cotton blanket. Cryogenic liquids can cause severe burns and tissue damage, and wrapping the area helps to insulate it and prevent further injury. Rewarming the body part as soon as possible is not recommended, as it can cause additional damage. Watching closely and treating for shock is important, but it is not the proper treatment for the immediate injury. Giving the victim plenty of liquids is also not the correct treatment for this specific situation.

The R-22 pumping unit cannot be used alone for direct aircraft servicing because it lacks a filter separator. A filter separator is an essential component that removes contaminants and impurities from the fuel before it is supplied to the aircraft. Without a filter separator, the fuel may contain particles or debris that could damage the aircraft's engine or fuel system. Therefore, it is necessary to have a filter separator installed to ensure the fuel is clean and safe for use in aircraft servicing.

The correct answer is 600 gpm. This means that the R-19 filter separator unit can filter fuel individually at a maximum rate of 600 gallons per minute.

The minimum gallon capacity for a fuel storage tank used at a military service station is 5,000. This is likely because military service stations require a large amount of fuel to support their operations, and a tank with a capacity of 5,000 gallons would be able to hold a sufficient amount of fuel to meet their needs. A smaller tank would not be able to hold enough fuel, while a larger tank may be unnecessary and more costly to maintain.

The correct answer is dual dispensing, single product. This type of automotive dispensing unit has two meters and one pump contained within its housing. It allows for the simultaneous dispensing of the same product from two separate nozzles. This is useful in situations where multiple vehicles need to be fueled at the same time, such as at a gas station or fleet refueling station.

One master vehicle identification reader (MVIR) can control a maximum of eight satellite vehicle identification readers (SVIR). Each SVIR can control up to nine fuel-dispensing pumps. Therefore, the total number of fuel-dispensing pumps that can be controlled by one MVIR and eight SVIRs is 8 (SVIRs) x 9 (pumps per SVIR) = 72.

The personnel responsible for completing the "Maintenance Status" column on page 2 of the AFTO Form 39, Fuel System Inspection and Discrepancy Report are the Water & fuels systems maintenance.

Physical inventories of active fuel storage tanks are normally taken between 2400 and 0800 hours. This time frame is chosen because it typically corresponds to the lowest activity and usage of the tanks, ensuring that the inventory count is as accurate as possible. Taking inventories during these hours minimizes the risk of interruptions or disturbances that could affect the accuracy of the count.

Heat can be transferred in cryotainers through conduction, convection, and radiation. Conduction refers to the transfer of heat through direct contact between objects, such as when a cryotainer is in contact with a warmer surface. Convection involves the transfer of heat through the movement of fluids or gases, such as when warmer air circulates inside the cryotainer. Radiation is the transfer of heat through electromagnetic waves, such as when heat is emitted from the cryotainer's surface. These three methods work together to ensure efficient heat transfer in cryotainers.

The Oshkosh R-11 Refueler pumping mode selector valve has positions for Defuel, Low-flow, and High-flow. However, it does not have a position for Single-point.

The correct answer is 40 degrees Fahrenheit (°F). This is because the ether starting aid is used to help start the Kovatch-Volvo R-11 Refueler when the temperature is below freezing. 40 degrees Fahrenheit is equivalent to 4.4 degrees Celsius, which is below freezing and would require the use of the starting aid.

The maximum rate at which the tank on the Kovatch-series R-11 Refueler can be filled using the bottom loading system is 600 gallons per minute (gpm).

The C-300/C-301 Ground Servicing unit is equipped with emergency shutoff handles in all of the mentioned locations except in the pumping compartment. This means that the emergency shutoff handles can be found on top of the tank, behind the driver's door, and at the right rear of the truck. The pumping compartment does not have an emergency shutoff handle.

To accurately determine the level of fuel in the tank, it is necessary to wait for a certain amount of time after filling the tank. This waiting period allows the fuel to settle and stabilize, ensuring an accurate reading. In this case, the correct answer is 30 minutes, which means that after filling the tank, one should wait for 30 minutes before inserting any object, such as a tape and bob, to determine the fuel level.

Concurrent servicing involves the simultaneous refueling of an aircraft while other maintenance activities are being carried out. This type of operation allows for efficient use of time and resources, as both fueling and maintenance can be completed concurrently. It is commonly used in situations where there is a tight turnaround time between flights or when multiple tasks need to be completed simultaneously.

The correct answer is DD Form 1898, Energy Sale Slip. This form is used to record fuel issues to aircraft that are not assigned to your home station. It is specifically designed for documenting fuel sales and transfers.

If a frayed bonding cable is found during the operator maintenance check, the correct action to take is to repair the bonding cable. Repairing the cable will ensure that it is in proper working condition and will maintain the necessary electrical bonding between equipment. This will help prevent any potential safety hazards or equipment malfunctions that could occur due to a damaged cable.

A 100 mesh strainer can remove particles that are 150 microns or larger because the mesh size of the strainer refers to the number of openings per linear inch. A 100 mesh strainer has 100 openings per linear inch, and each opening is 150 microns in size. Therefore, any particles that are larger than 150 microns will be trapped by the strainer and removed.

The maximum amount of time that can elapse between obtaining a conductivity sample and taking the conductivity reading is 24 hours. This means that the sample can be collected and stored for up to 24 hours before the reading is taken.

The PMU-27M air-transportable trailer-mounted refueling system's hoses are inspected daily for cracking, worn spots, and deterioration. However, loose mountings are not included in the list of things that are inspected.

AFTO Form 95, Significant Historical Data, may be used to document the inspection of fuel bladders. This form is specifically designed to record significant historical data related to an aircraft, including inspections and maintenance activities. Since fuel bladder inspections are an important part of aircraft maintenance, using AFTO Form 95 would allow for accurate documentation of these inspections.

The correct answer is the Fuels laboratory noncommissioned officer in charge (NCOIC). This individual is responsible for administering the caution tag program in a fuels management flight.

The micronic filter elements on an R-20 multi-aircraft servicing unit should be replaced when the differential pressure reading exceeds 15 psid. This means that once the pressure difference between the upstream and downstream sides of the filter reaches or exceeds 15 pounds per square inch differential, it is necessary to replace the filter elements. This is important to ensure that the filter continues to effectively remove contaminants and maintain the desired level of cleanliness in the system.

The correct answer is "Stick gauge; ⅛-inch." A stick gauge is a type of gauging device that is commonly used to manually gauge service station tanks. It is used to measure the level of fuel in the tank. The increments of measurement used on this stick gauge are ⅛-inch, meaning each mark on the stick represents an eighth of an inch. This allows for a more precise measurement of the fuel level in the tank.

Dual dispensing motors have a higher horsepower rating compared to the motors used in single dispensing units. This means that the dual dispensing motors are more powerful and capable of delivering a higher amount of torque. The higher horsepower rating allows the dual dispensing units to handle more demanding tasks and provide a greater flow rate.

A submerged pump has a higher delivery rate compared to other types of service station pumping systems. This is because a submerged pump is fully immersed in the liquid being pumped, allowing for more efficient and faster pumping. In contrast, suction pumps rely on creating a vacuum to draw in the liquid, which can result in a slower delivery rate. Dual dispensing and single dispensing systems may have multiple pumps, but the delivery rate ultimately depends on the type of pump used, making the submerged pump the correct answer for higher delivery rate.

The correct answer is "exterior of the tank at the required shut-off height." In a type III hydrant system, the ball float assembly for the high-level shutoff valve is located outside the tank at the required shut-off height. This means that the assembly is positioned at a specific height on the exterior of the tank to automatically shut off the flow of liquid when it reaches a certain level. Placing the assembly on the exterior allows for easy access and maintenance without the need to enter the tank.

The correct answer is Alarm annunciator. An alarm annunciator is a type III hydrant system component that is flush-mounted on the end wall of the pump control panel. It is completely solid-state with no moving parts and is used to indicate an emergency situation. It provides visual and audible alarms to alert operators or personnel that there is a problem or emergency occurring in the system.

The lockout key used on the type III hydrant system is designed to transfer control from one microprocessor to the other. This means that when the key is used, it allows the system to switch control from one microprocessor to another, ensuring a smooth transition and uninterrupted operation of the system. This key is likely used during maintenance or in case of any issues with one of the microprocessors, allowing for a seamless transfer of control to ensure the system continues to function properly.

The deadman control valve on the type V hydrant system operates using fuel pressure. This means that the valve is controlled and activated by the pressure of the fuel in the system. It does not rely on electricity, air pressure, or mechanical techniques to function.

The correct answer is 2400 to 2400. This means that the DLA Energy Form 702 covers the 24-hour duty day from midnight to midnight. This ensures that all petroleum receipts for the entire day are accounted for in the summary sheet.

The correct answer is 32 °F. The ether starting aid on the Oshkosh R-11 Refueler must be used if the ambient temperature is below 32 degrees Fahrenheit (°F). This starting aid is necessary to assist in starting the engine in colder temperatures, as it helps to ignite the fuel-air mixture in the engine cylinders. Using the ether starting aid below 32 °F ensures that the engine can start smoothly and effectively in colder weather conditions.

When performing a HIGH FLOW servicing of an aircraft with the Oshkosh R-11, it is important to not allow the engine speed to exceed 1,950 revolutions per minute (rpm). This is likely because exceeding this rpm could potentially cause damage to the engine or other components of the aircraft. Keeping the engine speed below this limit ensures safe and effective servicing without risking any potential harm.

The Beta-International R-12 Hydrant Servicing unit can issue fuel through the lift platform hoses at a maximum rate of 1,000 gallons per minute (gpm).

If condensation is discovered in the air filter of the Beta-International R-12 Hydrant Servicing unit, the correct action to take is to drain the condensation. This is because condensation in the air filter can restrict airflow and potentially damage the engine. By draining the condensation, the air filter will be able to function properly and prevent any potential issues.

A supplement is an example of a directive standard publication because it provides additional information or updates to an existing publication. It is typically used to add or clarify information that may have been missing or outdated in the original publication. A supplement is often distributed separately from the main publication and is intended to be used in conjunction with it. It serves as a directive standard by providing specific instructions or guidance related to a particular topic or issue.

The minimum flash point of JP-5 jet fuel is 140°F. Flash point refers to the lowest temperature at which a substance can emit enough vapor to ignite in the presence of an ignition source. In the case of JP-5 jet fuel, it requires a minimum temperature of 140°F for it to produce enough vapor to ignite.

"Follow Me" trucks do not have to yield the right of way to moving aircraft. These trucks are used to guide aircraft on the ground and ensure they follow the correct path. They have the authority to direct aircraft and other vehicles, so they do not need to yield to aircraft. Refueling units, fire trucks, and tugs, on the other hand, may need to yield to aircraft depending on the situation and airport regulations.

A fuel spill that is less than 2 feet in any direction is classified as Class I. This category is used to classify small spills that have a limited impact and can be easily contained and cleaned up.

Multi-source refueling is the process of refueling an aircraft from multiple fuel sources simultaneously. It is not approved on medical evacuation aircraft when patients are on board due to safety concerns. The presence of patients can increase the risk of fire or explosion during refueling, which could jeopardize their safety. Therefore, multi-source refueling is only allowed when patients are not on board the aircraft.

The correct answer is Automated point of sale device (APOSD). APOSD is an automated data collection system used for aircraft billing information. It is a device that allows for the sale of goods or services and collects payment information in a fast and efficient manner. This system is commonly used in various industries, including aviation, to track and manage billing information accurately and effectively.

To effectively detect pollutant releases, it is recommended to monitor underground storage tanks every 30 days. This frequency allows for regular and timely inspections, ensuring that any potential leaks or releases are promptly identified and addressed. Monitoring at shorter intervals, such as every 15 days, may be excessive and unnecessary, while longer intervals like 45 or 60 days could increase the risk of undetected pollution incidents. Therefore, a 30-day monitoring cycle strikes a balance between thoroughness and practicality in maintaining environmental safety.

When performing monthly checks using the AF Form 1807, the bottom loading system is checked for leaks and damage and to ensure the dust cover is in place. The bottom loading system is an important component of fuel servicing vehicles and it is necessary to inspect it regularly to ensure its proper functioning. Leaks and damage can compromise the system's ability to safely and efficiently transfer fuel, while the dust cover helps to protect the system from dirt and debris. Therefore, checking the bottom loading system is crucial to maintaining the overall integrity and functionality of the fuel servicing vehicle.

The canisters in the FFU-15E filter separator are made of aluminum. Aluminum is a commonly used material in filter separators due to its lightweight, corrosion resistance, and durability. It is able to withstand the harsh conditions and high pressures often encountered in filter separators. Additionally, aluminum is easily machinable, allowing for precise manufacturing of the canisters.

The correct answer is unit financial resource manager. The unit financial resource manager is responsible for coordinating and verifying billing data, including vehicle identification link (VIL) key requests. They have the authority and knowledge to ensure that all billing information is accurate and properly accounted for. The responsible officer, property administrator, and Defense fuel support point may have other roles and responsibilities, but they are not specifically tasked with verifying billing data and coordinating VIL key requests.

The correct answer is Vertical vent pipe. The vertical vent pipe is used for removing water from the bladder. It allows air to escape from the bladder as water is being drained, preventing any airlock or pressure build-up. The vent pipe is positioned vertically to ensure efficient water removal from the bladder.

The question is asking about the sizes of sealing clamps used for emergency repair of fuel bladders. The correct answer is "6½ inch" because the question states that these clamps come in all sizes except for this specific size. Therefore, 6½ inch is not an available size for these sealing clamps.

The American Petroleum Institute (API) gravity test is used to measure the density or specific gravity of crude oil and petroleum products. This test is performed using a graduated cylinder, which is a type of cylinder that has markings or graduations on its surface to accurately measure the volume of liquids. Graduated cylinders are commonly used in laboratories for precise measurements and are suitable for conducting the API gravity test. Therefore, the correct answer is "Graduated."

Membrane filters are dried at 194 °F before being used for a bottle method test.

The correct answer is the expeditionary LRS at the forward location. When a mobility readiness spares package (MRSP) kit is transferred to a forward location, the accountability for the kit rests with the expeditionary LRS. This means that the expeditionary LRS is responsible for keeping track of the kit and ensuring its proper use and maintenance. The home logistics readiness squadron (LRS) customer service element may have some involvement in the transfer process, but the ultimate accountability lies with the expeditionary LRS at the forward location.

The fuel management team is responsible for defining what constitutes a negative trend and developing policies to isolate and correct them. They oversee the management and usage of fuel within an organization or squadron, ensuring efficiency and compliance with environmental regulations. As experts in fuel management, they have the knowledge and authority to identify negative trends and implement corrective measures to address them. The compliance and environmental supervisor, squadron commander, and wing commander may have related responsibilities, but the fuel management team specifically focuses on fuel-related issues.

The two gauges that are permanently installed on cryotainers are pressure and quantity. These gauges are essential for monitoring the pressure levels and the amount of cryogenic material inside the cryotainer. The pressure gauge helps to ensure that the pressure is within safe operating limits, while the quantity gauge provides information about the amount of cryogenic material remaining in the cryotainer.

After pulling out the power takeoff (PTO) handle while performing servicing operations with the C-300/C-301 Ground Servicing unit, the transmission lever should be shifted into the Neutral (N) position. This is done to disengage the transmission and ensure that no power is being transferred to the wheels, allowing for safe and efficient maintenance operations.

Weight filters should be placed in a desiccator after drying for 30 minutes. This is the recommended time for the filters to fully dry and remove any remaining moisture. Placing the filters for a shorter time may result in incomplete drying, while leaving them for a longer time may cause over-drying and potential damage to the filters. Therefore, 30 minutes is the optimal duration for ensuring proper drying of the weight filters.

Government Purchase Card (GPC) cardholders should reconcile the statement of account via the bank's electronic access system on a monthly basis. This ensures that any discrepancies or unauthorized charges can be identified and resolved in a timely manner. Reconciling the statement of account on a monthly basis also helps in maintaining accurate financial records and prevents any potential fraud or misuse of the GPC. It allows for proper monitoring and control of expenses, ensuring compliance with financial regulations and policies.

The question is asking about the number of digits in the unit type code (UTC) that identifies personnel and equipment needed for deployment requirements. The correct answer is "Five" because the UTC consists of five digits.

Each military service station master vehicle identification reader (MVIR) has the capacity to control 8 selectable fuel product pumps.

The rated gallons per minute (gpm) pump capacity on the type IV hydrant system is 600. This means that the pump can deliver water at a rate of 600 gallons per minute.

The type IV hydrant system allows for simultaneous hot refueling of two aircraft in approximately 8 to 12 minutes. This means that two aircraft can be refueled at the same time within this time frame using this system.

If the DD Form 250, Material Inspection and Receiving Report, Bill of Lading, or contractor delivery ticket is not available upon arrival of a tank truck, the Quality Assurance Representative (QAR) should be contacted. The QAR is responsible for ensuring that all materials and supplies received meet the required standards and specifications. They would be the appropriate person to handle any issues or discrepancies with the documentation for the tank truck delivery.

The correct answer is Fuels service center (FSC). The Fuels service center is responsible for comparing the quantities transferred/received on an AF Form 834 and entering the gain or loss on the receipt form. They are in charge of managing and distributing fuel, ensuring accurate records are kept, and monitoring any discrepancies in fuel transfers. The Fuels Distribution supervisor, Hydrants supervisor, and Hydrant operator may have related responsibilities, but they are not specifically responsible for comparing quantities transferred/received and entering the gain or loss on the receipt form.

When performing flushing operations on a type III, IV, or V system, the pump selector switch should be placed in the "Flush" position. This position allows the pump to circulate water through the system, helping to remove any debris or contaminants. The "Off" position would completely shut off the pump, while the "Idle" position would keep the pump running but not actively circulating water. The "Auto" position is typically used for normal operation and may not provide the necessary flow for flushing. Therefore, the correct position for flushing operations is "Flush".

Completed Air Force Technical Order (AFTO) Forms 39, Fuel System Inspection and Discrepancy Report, are retained by fuels management for a period of three years. This allows for proper documentation and record-keeping of fuel system inspections and discrepancies.

The key on the tank control unit (TCU) that is used to access the main menu when obtaining product measurement readings with an automated tank gauging (ATG) is ESC.

The correct answer is "air has been removed from the annular space." In a cryotainer, the annular space refers to the space between the outer and inner tanks. By removing the air from this space, convection heat transfer is minimized because air is a poor conductor of heat. This helps to maintain the low temperature inside the inner tank, as the insulation in the annular space prevents heat from transferring through the walls of the cryotainer.

The Kovatch-series R-11 Refueler's fuel tank has 3% of additional expansion space built into it.

The correct answer is Time compliance. Time compliance technical orders (TCTOs) are issued to correct unsafe conditions that could cause severe or fatal injuries. These orders specify a specific time frame within which the corrective action must be taken to ensure the safety of personnel and equipment. They are prioritized based on the level of risk involved and the urgency of the situation. By complying with the specified time frame, potential hazards can be mitigated or eliminated, reducing the risk of accidents and injuries.

Technical orders are considered specialized publications because they contain detailed instructions, procedures, and information specific to a particular field or industry. They are often used in technical and military contexts to provide guidance on the maintenance, operation, and repair of equipment or systems. Journals, staff digests, and narrative summaries may also contain specialized information, but technical orders are specifically designed to provide detailed and specific instructions, making them the most appropriate answer.

The surge suppressor pressure gauges should indicate a precharge pressure reading of 90 psi, with a tolerance of ± 5 psi. This means that the acceptable range for the pressure reading is between 85 psi and 95 psi.

The correct answer is to prevent the sump tank from overfilling. By checking to ensure the sump tank is below ⅔ full before performing a defueling operation, it ensures that the tank does not exceed its capacity and avoids any potential overflow or spillage. This is important for safety reasons and to prevent any damage or contamination that may occur if the tank is overfilled.

When using the Enhanced Technical Information Management System (ETIMS), you can locate a technical order (TO) when only the TO series is known by typing the series number in the "TO number" block. This means that if you have the series number of the TO, you can directly enter it in the "TO number" block to find the specific technical order you are looking for in the ETIMS system.

The form or publication title should be entered in the "Search Products" block when searching by title for an electronic standard publication on the Air Force e-Publishing website. This block is specifically designed for searching and retrieving products based on their titles. By entering the title in this block, users can easily find the desired electronic standard publication on the website.

The vent valve is the component that allows the tank to breathe during loading and unloading operations. It helps to release any excess pressure or vacuum that may build up inside the tank, ensuring safe and efficient operations. The other options, float level sensor, bottom loading interlock, and emergency/bottom loading valve, do not serve the same purpose as the vent valve in allowing the tank to breathe.

Liquid nitrogen does not burn or explode upon contact with oil, grease, and jet fuel. Liquid nitrogen is extremely cold and can cause frostbite or damage to human tissue upon contact. It reduces the concentration of oxygen and can cause asphyxiation in confined spaces if it evaporates and displaces the oxygen. Additionally, if liquid nitrogen evaporates in a confined area, it can build up to tremendous pressure, potentially causing an explosion.

Grounded plugs are necessary for safety measures in Air Force electrical equipment. Grounding helps to prevent electrical shocks by providing a path for excess electrical current to flow into the ground. This helps to protect both the equipment and the personnel using it. Grounded plugs also help to reduce the risk of electrical fires by preventing the buildup of static electricity. Therefore, having grounded plugs is an important safety requirement for Air Force electrical equipment.

Concurrent servicing is the correct answer because it is responsible for on-site supervision during all aspects of a concurrent servicing operation supporting combat sortie generation (CSO/CSG). This means that the supervisor overseeing the concurrent servicing operation is responsible for ensuring that all necessary tasks are completed efficiently and safely, while also coordinating with other teams involved in the combat sortie generation process. Hot refueling, fuel servicing, and chief servicing may be involved in the overall operation, but the concurrent servicing supervisor has the primary responsibility for on-site supervision.

Crewmembers should be limited to four operations per day when conducting inshelter refueling with shelter doors completely closed. This limitation ensures safety and minimizes the risk of accidents or exposure to hazardous materials. It allows for efficient refueling operations while maintaining a controlled environment inside the shelter.

The minimum safe distance behind an aircraft's operating jet is considered to be 200 feet. This distance ensures that there is enough space for other aircraft or ground personnel to safely maneuver without being affected by the jet blast or any debris that may be generated by the aircraft's engines. It also helps to prevent any potential damage to the aircraft or injury to personnel due to the high velocity and temperature of the jet blast.

Prior to performing off-loading operations in an unsecure area, danger signs should be placed 50 feet in the front and to the rear of tank trucks. This is important to ensure the safety of individuals in the area and to warn them about the potential dangers associated with the off-loading process. Placing the signs at this distance allows for adequate visibility and gives people enough time to react and stay clear of the area.

Assigned fuel servicing vehicles and equipment must be inspected at least once every 7 days. This regular inspection is necessary to ensure that the vehicles and equipment are in proper working condition and meet safety standards. By inspecting them every 7 days, any potential issues or maintenance needs can be identified and addressed promptly, reducing the risk of accidents or breakdowns during fuel servicing operations. Regular inspections also help to maintain the efficiency and reliability of the vehicles and equipment, ensuring smooth operations and minimizing downtime.

When fighting an electrical fire, the first thing you should do is disable the circuit. This is important because electrical fires are fueled by electricity, so cutting off the power supply is crucial to prevent the fire from spreading or causing further damage. By disabling the circuit, you eliminate the source of the fire and minimize the risk of electric shock or injury.

Water pressure fire extinguishers are effective on this class of fire because they use water as the extinguishing agent. Class A fires involve ordinary combustible materials such as wood, paper, and cloth. Water is able to cool down the fire and remove the heat, which is one of the elements needed for combustion. Therefore, water pressure fire extinguishers are an appropriate choice for tackling Class A fires.

The correct answer is "Discrepancies completed from the old form." This means that when filling out a new AF Form 1807 for Fuel Servicing Vehicles, discrepancies that were already resolved or completed on the old form should not be recorded again. The purpose of the new form is to document any defective conditions, overdue inspections, or discrepancies that are still open or unresolved.

To observe environmental pollution precautions, it is important to regularly check dikes for deterioration. Dikes are structures that are used to contain or control the flow of water, and they play a crucial role in preventing pollution from spreading. Checking them on a weekly basis ensures that any signs of deterioration, such as cracks or leaks, can be promptly identified and addressed. This frequent inspection schedule helps to maintain the integrity of the dikes and prevent potential environmental pollution incidents.

The correct answer is Three. When setting up the R-22, three sections of 25-foot hose should be used to connect the R-22 trailer-mounted transfer pump assembly to the FFU-15E.

The engine should be allowed to idle for five minutes before increasing the throttle setting after starting the R-22 trailer-mounted transfer pump assembly.