Arizona Administrative Code › Title 9 - HEALTH SERVICES › Chapter 7 - DEPARTMENT OF HEALTH SERVICES - RADIATION CONTROL › Article 4 - STANDARDS FOR PROTECTION AGAINST IONIZING RADIATION › Appendix A - Assigned Protection Factors for Respirators[a]

Current through Register Vol. 30, No. 28, July 12, 2024
Operating mode
Assigned Protection Factors
I. Air Purifying Respirators [Particulate
								b only] c:
Filtering face piece disposable
								d
Negative
(d)
Face piece, half
								e
Negative Pressure
10
Face piece, full
Negative Pressure
100
Face piece, half
Powered Air-purifying Respirators
50
Face piece, full
Powered Air-purifying Respirators
1000
Helmet/hood
Powered Air-purifying Respirators
1000
Face piece, loose-fitting
Powered Air-purifying Respirators
25
II. Atmosphere supplying respirators [particulate,
								gases and vaporsf]:
1. Air-line respirator:
Face piece, half
Demand
10
Face piece, half
Continuous Flow
50
Face piece, half
Pressure Demand
50
Face piece, full
Demand
100
Face piece, full
Continuous Flow
1000
Face piece, full
Pressure Demand
1000
Helmet/hood
Continuous Flow
1000
Face piece, loose-fitting
Continuous Flow
25
Suit
Continuous Flow
(g)
2. Self-contained breathing Apparatus
								(SCBA):
Face piece, full
Demand
h100
Face piece, full
Pressure Demand
i10,000
Face piece, full
Demand, Recirculating
h100
Face piece, full
Positive Pressure Recirculating
i10,000
III. Combination Respirators:
Any combination of air-purifying and
								atmosphere-supplying respirators
Assigned protection factor for type and mode of
								operation as listed above
a These assigned protection
				  factors apply only in a respiratory protection program that meets the
				  requirements of this Article. They are applicable only to airborne radiological
				  hazards and may not be appropriate if chemical or other respiratory hazards
				  exist instead of, or in addition to, radioactive hazards. A licensee shall
				  comply with Department of Labor regulations, regarding selection and use of
				  respirators for those circumstances.
Radioactive contaminants for which the concentration values
				  in Table 1, Column 3 of Appendix B are based on internal dose due to inhalation
				  may, in addition, present external exposure hazards at higher concentrations.
				  Under these circumstances, limitations on occupancy may have to be governed by
				  external dose limits.
b A licensee shall equip air
				  purifying respirators of APF<100 with particulate filters that are at least
				  95 percent efficient. The licensee shall equip air purifying respirators of
				  APF=100 with particulate filters that are at least 99 percent efficient. The
				  licensee shall equip air purifying respirators of APF>100 with particulate
				  filters that are at least 99.97 percent efficient.
c A licensee may apply to the
				  Commission for the use of an APF greater than 1 for sorbent cartridges as
				  protection against airborne radioactive gases and vapors, similar to
				  radioiodine.
d A Licensee may permit an
				  individual to use this type of respirator if the individual has not been
				  medically screened or fit tested on the device, provided that no credit is
				  taken for use of these respirators in estimation of intake or dose. It is also
				  recognized that it is difficult to perform an effective positive or negative
				  pressure pre-use user seal check on this type of device. All other respiratory
				  protection program requirements listed in
				  10 CFR
				  20.1703, January 2000 Edition, and published
				  January 1, 2000, apply and are incorporated by reference and available for
				  review at the Department and Secretary of State. This incorporation by
				  reference contains no future editions or amendments. There is no assigned
				  protection factor for these devices. However, a licensee may use an APF equal
				  to 10 if the licensee can demonstrate a fit factor of at least 100 by use of a
				  validated or evaluated, qualitative or quantitative fit test.
e Under-chin type only. No
				  distinction is made in this appendix between elastomeric half-masks with
				  replaceable cartridges and those designed with the filter medium as an integral
				  part of the face piece (disposable or reusable disposable). Both types are
				  acceptable as long as the seal area of the latter contains some substantial
				  type of seal-enhancing material, such as rubber or plastic, two or more
				  suspension straps are adjustable, the filter medium is at least 95 percent
				  efficient, and all other requirements of this Article are met.
f The assigned protection factors
				  for gases and vapors are not applicable to radioactive contaminants that
				  present an absorption or submersion hazard. For tritium oxide vapor,
				  approximately one-third of the intake occurs by absorption through the skin so
				  that an overall protection factor of 3 is appropriate when atmosphere-supplying
				  respirators are used to protect against tritium oxide. Exposure to radioactive
				  noble gases is not considered a significant respiratory hazard and protective
				  actions for these contaminants should be based on external (submersion) dose
				  considerations.
g No NIOSH approval schedule is
				  currently available for atmosphere supplying suits. This equipment may be used
				  in an acceptable respiratory protection program as long as all the other
				  minimum program requirements, with the exception of fit testing, are met. The
				  minimum program requirements are provided in
				  10 CFR
				  20.1703.
h The licensee shall implement
				  institutional controls to assure that these devices are not used in areas
				  immediately dangerous to life or health (IDLH).
i This type of respirator may be
				  used as an emergency device in unknown concentrations for protection against
				  inhalation hazards. External radiation hazards and other limitations to
				  permitted exposure such as skin absorption shall be taken into account in these
				  circumstances. This device may not be used by any individual who experiences
				  perceptible outward leakage of breathing gas while wearing the
				  device.