What is the minimum requirement in inches for access to valves and fittings of multiple groups of cylinders?

The minimum requirement for access to valves and fittings of multiple groups of cylinders being three inches ensures that there is adequate space for operability and safety. This distance allows for personnel to easily reach and operate the valves and fittings without obstruction. It is particularly critical in emergency situations where quick access may be necessary to prevent accidents or ensure proper functioning.

Considering the safety guidelines established by regulatory standards in handling CNG systems, maintaining a minimum clearance of three inches helps facilitate safe maintenance and inspections as well. This requirement balances the need for proximity to operational components with the need for ensuring safety protocols can be followed effectively. Adequate spacing also allows for the use of tools and equipment, further promoting a safe working environment when dealing with the high-pressure aspects of compressed natural gas systems.