Concealed gas piping in solid partitions is allowed only if installed in a ventilated chase or casing and the pipe has no unions, compression couplings, or swing joints. Which option matches this requirement?

Concealed gas piping in solid partitions is allowed only if installed in a ventilated chase or casing and the pipe has no unions, compression couplings, or swing joints. Which option matches this requirement?

• A. Concealed piping may be located in solid partitions if it is insulated with a firestop.
• B. Installed in a ventilated chase/casing and pipe must not have unions, compression couplings and swing joints.
• C. It may include unions and swing joints if accessible.
• D. It must be painted to indicate gas service.

Answer: (B)

The rule being tested is that concealed gas piping in solid partitions must run inside a ventilated chase or casing and must not include unions, compression couplings, or swing joints. This setup helps prevent gas from accumulating in concealed spaces and keeps joints accessible for inspection and maintenance, reducing the risk of leaks going undetected. The best option states that the piping is installed in a ventilated chase or casing and that the pipe has no unions, compression couplings, or swing joints, precisely meeting this requirement. Other choices don’t fit because they either focus on insulation or firestopping rather than ventilation and joint restrictions, allow joints in concealed runs if they’re accessible (which conflicts with the rule about concealed piping), or introduce an unrelated requirement (such as painting).

The rule being tested is that concealed gas piping in solid partitions must run inside a ventilated chase or casing and must not include unions, compression couplings, or swing joints. This setup helps prevent gas from accumulating in concealed spaces and keeps joints accessible for inspection and maintenance, reducing the risk of leaks going undetected.

The best option states that the piping is installed in a ventilated chase or casing and that the pipe has no unions, compression couplings, or swing joints, precisely meeting this requirement.

Other choices don’t fit because they either focus on insulation or firestopping rather than ventilation and joint restrictions, allow joints in concealed runs if they’re accessible (which conflicts with the rule about concealed piping), or introduce an unrelated requirement (such as painting).