What is the assigned protection factor for an SCBA?
10,000
The NIOSH-assigned protection factor (APF) for a negative-pressure full facepiece is 50; the APF for a positive-pressure SCBA is 10,000.
How is assigned protection factor calculated?
A respirator MUC is calculated by multiplying its APF by the PEL: MUC = APF X PEL. The respirator can be used up to this concentration as long as the MUC does not exceed the immediately dangerous to life or health (IDLH) level.
Is an APF of 10 good?
An APF of 10 means that dust masks (if used properly) can be safely used in an atmosphere that has a hazardous concentration of up to 10 times the Permissible Exposure Limit (PEL) or other exposure limit for that hazard.
What is the assigned protection factor for a tight fitting full face Papr?
It has an OSHA APF of at least 25 for loose-fitting hoods and helmets, 50 for tight-fitting half masks, and 1,000 for full facepiece types and some loose-fitting hoods and helmets where the manufacturer’s testing has demonstrated an APF of 1,000.
What does APF of 50 mean?
fit tested Half
APF=50. Needs to be fit tested. Half mask/Dust mask. APF=10. Needs to be fit tested.
What is the difference between MUC and APF?
The APF is the workplace level of respiratory protection that a respirator or class of respirators is expected to provide to employees when the employer implements a continuing, effective respiratory protection program. The MUC is the upper limit at which the class of respirator is expected to provide protection.
What does assigned protection factor of 50 mean?
The APF is based on the type of mask and size. An APF of 10 means that no more than one-tenth of the contaminants to which the worker is exposed will leak into the inside of the mask. A properly-fitted full-face mask with an APF of 50, would reduce the exposure inside the mask down to 0.4 ug/m3.
What does an APF of 50 mean?
APF=50. Needs to be fit tested. Half mask/Dust mask. APF=10. Needs to be fit tested.
What does an APF of 1000 mean?
The employer must have evidence provided by the respirator manufacturer that testing of these respirators demonstrates performance at a level of protection of 1,000 or greater to receive an APF of 1,000. This level of performance can best be demonstrated by performing a WPF or SWPF study or equivalent testing.
What is the APF of an N95 respirator?
Properly fitted, an N95 respirator forms a tight seal on the face so that all inhaled air passes through the filter media. OSHA regulations require that a person pass a fit test before using an N95 respirator. The N95 respirator has an assigned protection factor (APF) of 10.
What is the assigned protection factor APF for a N95 respirator?
10
An APF of 10 has been assigned to half-mask respirators including N95 filtering facepiece respirators (FFRs) (OSHA, 2006).
Which respirator has the highest protection factor?
The decision on choosing appropriate respiratory protection should be based on overall analysis of the specific conditions and not on protection factors alone. PAPR with tight fitting headpiece and class TM3 offer the highest protection level among air purifying respirators. Which one do I use?
What are the protection factors for respirator selection?
Assigned Protection Factor The workplace level of respiratory protection that a respirator or classof respirators is expected to provide to properly fitted and trained workers These are the only values to use when making a respirator selection for those who follow OSHA. Calculated values by OSHA through workplace simulated exercises
When to convert APF to 10, 000 for auxiliary escape bottle?
Once the auxiliary escape bottle is being used solely without the air-line, the APF is converted to 10,000 for a full-facepiece SCBA. Therefore, the information provided in the Federal Register and the OSHA publications are both correct.
Is the APF for the full-facepiece SAR the same as the SCBA?
Background: Your letter describes the Federal Register, Volume 71, No. 164, dated August 24, 2006, as stating that the combination pressure-demand, full-face piece SAR with auxiliary SCBA respirator is equivalent to an SCBA, and, therefore, the APF for an SCBA applies.
What is the standard number for respiratory protection?
By Standard Number 1910.134 – Respiratory Protection.