Mothballs are made from a chemical, I don't recall what the name is... Anyways, this chemical off-gasses into the air and it is toxic to breathe.
Because modern refrigerant is havier than air and replace the air in a room. The air you breath must contain at least 9% oxygen. If it does not, you will lose consciousness. Sang lee
Mechanical Ventilation System
mechanical
Intercostals.
Gasoline boats built after July 31, 1980, must have a ventilation system that meets specific standards to prevent the accumulation of explosive gasoline vapors. This typically includes both natural and powered ventilation systems. The powered ventilation must operate automatically and be designed to effectively exchange air in engine compartments. These regulations are intended to enhance safety and reduce the risk of fire or explosion.
Inboard gasoline boats built after July 31, 1980, must have ventilation systems that effectively remove explosive gases from the engine compartment. This typically includes two separate ventilation ducts: one for supplying fresh air and another for exhausting stale air. Additionally, the ventilation system must be designed to ensure that air can circulate properly, particularly when the engine is running or after it has been stopped. These requirements are aimed at enhancing safety and preventing the accumulation of flammable vapors.
Inboard gasoline boats built after July 31, 1981, must have a ventilation system that includes at least two vents, one for intake and one for exhaust, to ensure proper ventilation of the engine compartment. This system is designed to prevent the accumulation of explosive fumes by allowing fresh air to circulate while expelling potentially hazardous vapors. The ventilation must be effective and comply with the standards set by the United States Coast Guard (USCG).
Inboard gasoline boats built after 1980 must have a ventilation system that includes at least two ventilation ducts leading to the engine compartment. These ducts should allow for the inflow of fresh air and the outflow of explosive vapors, helping to prevent the accumulation of flammable fumes. The system must meet specific standards set by the U.S. Coast Guard to ensure safety and compliance. Regular maintenance and inspection of the ventilation system are also essential for continued safety.
Mechanical
Inboard gasoline boats built after July 31, 1980, must have a ventilation system designed to remove flammable vapors from the engine compartment. This system must include at least two ventilation ducts, one for intake and one for exhaust, to ensure proper airflow. Additionally, the system should be capable of operating with the engine running and must meet the standards set by the U.S. Coast Guard to enhance safety on the water.
Inboard gasoline boats built after July 31, 1980, must have a ventilation system that includes at least two effective means of ventilating the engine and fuel tank compartments. This typically involves the use of natural ventilation, such as air intakes and exhausts, or mechanical ventilation systems to ensure the removal of flammable vapors. The system is designed to prevent the accumulation of hazardous gases to enhance safety on board.
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