The equipment, material, power and labor necessary for the inspection and test shall be furnished by the plumber. Each soil stack, waste stack and rain leader shall be provided with a test fitting, and when of the type having an iron-pipe-size screw opening, such openings may be used as a cleanout when installed in accordance with §
131-30A. An outside sheet metal rain leader shall not be subject to the requirements of this section.
Upon the satisfactory completion and final test of the plumbing
system, the Plumbing Inspector shall issue a certificate of approval
to the plumber for delivery to the owner when so requested in writing
by either the owner or the plumber.
Where there is reason to believe that the drainage and vent
system of any building has become unsanitary or defective, such drainage
and vent system shall be subject to a smoke or peppermint test if
ordered by the Plumbing Inspector.
The using of drainage and vent systems shall be tested with water or air as hereinafter specified, when inspection is required by §
131-117. Water tests shall not be used in freezing weather. Cleanouts or plugs shall be removed and traps unsealed, if requested by the Plumbing Inspector to ascertain whether the test medium has reached all parts of the system. After the plumbing fixtures have been set and their traps filled with water, the entire drainage system shall be submitted to final inspection.
Upon the completion of a section or of an entire water supply
system, it shall be tested and proved tight under a water pressure
not less than the working pressure under which it is to be used. The
water supply used for test shall be obtained from the normal source
of supply.
After tests have been made and approved by the Plumbing Inspector,
drain, vent and water piping may be insulated, coated or painted,
but no covering shall be applied until the tests have been made and
approved.