Current through Register Vol. 63, No. 12, December 1, 2024
(1) Application. This section applies to
compressed air receivers and other equipment making and using compressed air or
gas. This section does not apply to the use of compressed air to move materials
nor to work in compressed air as in tunnels and caissons. It also does not
apply to compressed air machinery and equipment used on transportation
vehicles.
(2) General requirements.
New and existing equipment.
(a) Construct all
new air receivers installed after the effective date of these regulations
according to the 1995 edition of the A.S.M.E. Boiler and Pressure Vessel Code
Section VIII.
(b) Construct,
install and maintain all safety valves according to the A.S.M.E. Boiler and
Pressure Vessel Code, Section VIII Edition 1995.
(3) Installation and equipment requirements.
(a) Installation. Install air receivers so
that all drains, hand holes and manholes are easily accessible. Do not bury an
air receiver underground or put it in an inaccessible place.
(b) Drains and traps. Install a drain pipe
and valve at the lowest point of every air receiver to provide for the removal
of accumulated oil and water. Adequate automatic traps are acceptable besides
drain valves. To prevent excessive amounts of liquid in the receiver, open the
drain valve and drain the receiver completely as often as needed.
(c) Gages and valves.
(A) Every air receiver must have an
indicating pressure gage that is visible and with one or more spring-loaded
safety valves. These valves together must prevent pressure from exceeding the
maximum allowable working pressure by more than 10 percent.
(B) No valve of any type must be between the
air receiver and its safety valve or valves.
(C) Construct and place safety and control
devices so that people cannot defeat them and are protected from the
elements.
(D) Test all safety
valves frequently to find out if they are in good operating
condition.
(4) Compressed air - general.
(a) Never use compressed air or gas to clean
clothing that is being worn. Never direct compressed air or gas at a
person.
(b) Do not use compressed
air for cleaning unless:
(A) It is reduced at
the source to less than 30 p.s.i. and then only with effective chip guarding
and personal protective equipment; or
(B) The outlet device or nozzle reduces end
pressure to less than 30 p.s.i. when dead-ended or placed against an object,
then only with effective chip guarding and personal protective
equipment.
(c) All hose
connections must be secure and maintained to be safe. Do not allow the hose to
begin whipping.
NOTE: See 4/P, OAR
437-004-2230 for standards about
using tools run by compressed air.
(5) Piping systems.
(a) All piping systems and their component
parts that carry air, steam or other material at more than atmospheric pressure
must safely withstand pressures to be placed upon them.
(b) To be acceptable for pressure line
service with gaseous substances, non-metallic pipe must have its manufacturer's
recommendation and listing for compressed air or gas service. Only use PVC pipe
for compressed air if you bury or encase it.
(6) High temperature piping. High temperature
is 140° fahrenheit or higher.
(a) Cover
all steam and other high temperature pipe lines within 7 feet of the floor or
work platform or passageway with non-combustible insulating material or
otherwise protect it against accidental contact with persons.
(b) All steam hose connections must be secure
and maintained to be safe. Do not allow the hose to begin whipping.
Publications: The publication(s) referred to or incorporated
by reference in this rule are available from the
agency.
Stat. Auth.: ORS
654.025(2)
& ORS 656.726(3)
Stats. Implemented: ORS
654.001 - ORS
654.295
