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satisfactory decontamination. If contamination is heavy, a separate
decontamination step may be required before cleaning. For complete
decontamination of phosphate pesticide residues, wash with alkaline
soap, rinse with clean warm water and then rinse with 50 percent
alcohol (ethyl or isopropyl).
If commercial materials are not available, respiratory equipment may
be washed in a liquid detergent solution, then immersed in one of the
following:
◆ Sodium hypochlorite solution (50 parts per million of chlorine)
for 2 minutes; OR
◆ An aqueous iodine solution (50 parts per million of iodine) for
2 minutes; OR
◆ A quaternary ammonium solution with 200 parts per million of
quaternary ammonium compounds in water of less than 500
parts per million total hardness (See Quaternary Ammonium in
Appendix H, Reference Guide to Commercial Suppliers of
Treatment and Related Safety Equipment.)
The sodium hypochlorite and iodine solutions are not stable. You must
prepare fresh solution for each use. These solutions age rubber parts
and are corrosive to metallic parts, therefore, immersion times should
not be extended and the disinfectants should be thoroughly rinsed
from all parts with clean, warm water.
Repair
Only experienced persons shall handle replacements or repairs using
only those parts specifically designed for the equipment. Make no
attempt to replace components or to make adjustments or repairs
beyond the manufacturer’s recommendations. Reducing or inlet valves
and regulators shall be returned to the manufacturer or sent to a
trained technician for adjustment or repair.
Equipment
Maintenance and Care
8-1-22 Treatment Manual 06/2004-01
PPQ
Storage
After inspection, cleaning, and necessary repair, equipment shall be
stored to protect against dust, sunlight, heat, extreme cold, excessive
moisture, or damaging chemicals. Respiratory equipment located at
stations and work areas for emergency use should be stored in
compartments built for that purpose. They should be clearly marked
and quickly accessible at all times. Under no circumstances shall a
motor vehicle be used for storage of respiratory protective equipment.
The excessive and uncontrollable changes in temperature are bad for
this equipment.
Routinely used respirators, such as dust respirators, may be placed in
resealable plastic bags or heat sealed plastic. Respirators should not
be stored in such places as lockers or tool boxes unless they are in
carrying cases or cartons and plainly marked. Respirators should be
packed or stored so that the facepiece and exhalation valve will rest in
a normal position to prevent function impairment by the elastomer
taking a permanent set in an abnormal position. It is advisable to
rotate the respirator face up, or face down at monthly inspections.
Instructions for proper storage of emergency respirators, or
self-contained breathing apparatus are found in “use and care”
instructions usually mounted inside the carrying case lid. Should the
case not have such instructions, obtain them from the manufacturer
and place in the case cover.
Respirable Air for Self-Contained Breathing Apparatus
Compressed air shall be of high purity. Breathing air shall meet the
requirements for Grade D breathing air as described in Compressed
Gas Association Commodity Specification G-7.1-1966. Air tanks can
be refilled at most SCUBA diving stores or where local fire
departments or rescue squads obtain air for their units. Test data
denoting the quality of the compressed air should be available from
the air supplier.
There is no need to change the air in the units, even after extended
periods of time.
Have breathing air cylinders inspected and hydrostatically tested as
required by the type of cylinder being used. Refer to the
manufacturer’s recommendations and comply with the Department of
Transportation (DOT) or Interstate Commerce Commission
Specifications for shipping containers.
WARNING
Never use compressed oxygen! (Compressed air may contain a low
concentration of oil. When high-pressure oxygen passes through an oil or
grease coated orifice, an explosion or fire may occur.)
Equipment
Detector Kits or Gas Samples
06/2004-01 Treatment Manual 8-1-23
PPQ
Breathing air cylinders shall be marked in accordance with American
National Standard Method of Marking Portable Compressed Gas
Containers to Identify the Material Contained.
Detector Kits or Gas Samples
Although thermal conductivity (T/C) units such as the Gow-Mac® and
the Fumiscope® are used to measure concentrations of methyl
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