1005.2 Discharge Piping. The discharge piping serving a

temperature relief valve, pressure relief valve, or combination of both shall have no valves, obstructions, or means of isolation and provided with the following: (1) Equal to the size of the valve outlet and shall discharge

full size to the flood level of the area receiving the dis

(1) Equal to the size of the valve outlet and shall discharge

full size to the flood level of the area receiving the discharge and pointing down. (2) Materials shall be rated at not less than the operating tem perature of the system and approved for such use.

(2) Materials shall be rated at not less than the operating tem perature of the system and approved for such use. (3) Discharge pipe shall discharge independently by gravity

through an air gap into the drainage system or outside of

(3) Discharge pipe shall discharge independently by gravity

through an air gap into the drainage system or outside of the building with the end of the pipe not exceeding 2 feet (610 mm) and not less than 6 inches (152 mm) above the ground and pointing downwards. (4) Discharge in such a manner that does not cause personal

injury or structural damage.

charged to the outside of the boiler room. Discharges from relief valves on industrial boilers shall be discharged to an approved location.