Do you know the Code regime for gas cabinets & exhausted enclosures?

A designer must understand the code regime at the start of the design activity to be sure to reference the proper codes, at least to establish minimum requirements. With respect to gas cabinets and exhausted enclosures, both code bodies define gas cabinets and exhausted enclosures harmoniously.

Where are gas cabinets & exhausted enclosures found?

Gas cabinets and exhausted enclosures are found in many of our client’s facilities, primarily in semiconductor fabrication and research laboratories. The appropriate amount of airflow is not always obvious to the designer.

How are gas ports sized?

Ports are sized based on standardized National Pipe Thread (NPT) sizes. Dimensions for these sizes are given in inches; each is based on the nominal pipe size that corresponds to the connection. The specifications for a gas cabinet describe everything from gas flow rates to the physical size of the system.

What is the difference between cabinet size & port size?

Cabinet size - Indicates the physical size of the gas cabinet or the body of the distribution system. Port/tube size - Indicates the physical size of the tubing or exhaust port connections in the system, typically given in inches based on a sizing standard such as National Pipe Thread (NPT).

What are the specifications for a gas cabinet?

The specifications for a gas cabinet describe everything from gas flow rates to the physical size of the system. Maximum pressure - Pressure describes the amount of force exerted on the system by the contained and pressurized gas.

What is an exhaust enclosure?

Such enclosures include laboratory hoods, exhaust fume hoods and similar appliances and equipment used to retain and exhaust locally the gases, fumes, vapors and mists that could be released. Rooms or areas provided with general ventilation, in themselves, are not exhausted enclosures.