MCC-NH Gas Fitters Practice Exam

What is a requirement for a shutoff valve in a laboratory setting?

1. A shutoff valve must be installed outside the laboratory

2. Each laboratory must have a double shutoff valve for safety

3. All gas outlets must be supplied through a single accessible shutoff valve

4. The shutoff valve can be any type of valve available

The correct answer is: All gas outlets must be supplied through a single accessible shutoff valve

In a laboratory setting, having all gas outlets supplied through a single accessible shutoff valve is crucial for ensuring safety and quick response in an emergency. This setup allows for efficient management of gas supply, enabling personnel to easily access and shut off the gas in the event of a leak or other hazardous situation. The accessibility of the valve is vital; it must be located in a place that laboratory staff can quickly reach, ensuring that they can act swiftly to mitigate any risks associated with gas leaks. Establishing a single point of control also streamlines training and operational protocols for laboratory personnel, as they can be thoroughly educated on the location and use of the shutoff system. Additionally, maintaining a simpler configuration with one valve can minimize the complexity involved in monitoring and maintaining the gas supply system, thus contributing to overall safety in the laboratory environment.