5703.6.3 Testing.
FC § 5703.6.3
Unless tested in accordance with the applicable section of ASME B31.9, piping, before being covered, enclosed or placed in use, shall be hydrostatically tested to 150 percent of the maximum anticipated operating pressure of the system, or pneumatically tested to 110 percent of the maximum anticipated pressure of the system, but not less than 15 pounds per square inch gauge (psig) (103.4 kPa) at the highest point of the system. This test shall be maintained for a sufficient time period to complete visual inspection of joints and connections. For a minimum of 60 minutes, there shall be no leakage or permanent distortion. Pneumatic testing shall be conducted using an inert gas, except that air may be used if the piping system does not contain flammable or combustible liquid vapors. Piping system tests shall be conducted at the owner's risk by his or her representative before a representative of the department. Care shall be exercised to ensure that these pressures are not applied to vented storage tanks. Such storage tanks shall be tested independently from the piping.
