Respirators are currently approved by testing them on a number of subjects without specifying facial sizes. Anthropometrically designed test panels were developed that represent the majority of the working population in terms of relevant facial measurements.
Protection Factors provided by 25 NIOSH approved supplied-air respirators were determined while the devices were worn by a panel of test subjects anthropometrically selected to represent adult facial sizes. Polydispersed DOP aerosol was used for respirator fit tests on continuous flow, demand, and pressure-demand respirators. Based on facepiece leakage measurements it appears that demand-type respirators should neither be used nor approved. The highest level of protection was provided by pressure-demand devices.
12.1.Qualifications of Responsible Persons IT 12.2.Procedures and Standards I? 12.3.Evaluation «>f Prograo Effectiveness 17 12.4. Records •»* 12.5.Methods of Staying /.breast of New Developments in the Field '* \X SI'KClAl. I»HO«I.KMS !!• 13.1.Consunications-l!» 13.2.Prescription Classes H» 13.3.Facial KaiT-t*» 13.4.Dentures *** 13.5.Protective Headgear {••' 13.6.Use in Extrcaes of Teaperaturc •'" RKKKRKNt'KS M IV ENERGY RESEARCH AND DEVELOPMENT ADMINISTRATION DIVISION OF SAFETY. STANDARDS. AND COMPLIANCE RESPIRATOR MANUAL h> Durrvl II. DOUKIHS. Alan L. Hack. Bruce .1. Held, and Willinm li. Kcvoir I. INTRODUCTION t.t Purpose Thin msintsiit ha* been prepared (<• provide technical information for contractors or the KtH-ruy Hi-M'tifih ami Development Administration (ERl)Ai on the application of respiratory proiective device* for protection against air)x>rne contaminnnis. huth radiuucSive and sumradioaclive. The various element* of a respirator program including niu-l are described to assist in twuihltshini: adeqttntc program*. 1.2. Scope Hroad cimlanri' is proviairhonie niaterialti. The cuiriance is inundwi foritse by inanuiseinent ineslahlishint: programs and by oprralinjt jHTMinnel in iinpleinentini: programs. (•uidnnce t» primarily directed to the use of respirators to prevent the inhalation of air->K»rnt' contaminant!*. I'rotevtion nuuiiiM oiher mixlw«f intake (e.g.. absorption, swnilowin»{. wound injection, etc.i is, in Ht'iicral. »«t covenil: nor is the use of pnitective equipinent for head. eye. or skin protection. When such additionul nunies of intake «r concurrent mi/rtrcls. are present they must also IK-considered; and respirator,-protective equipment must i;e coinpat'Stle with the pmieiiion chosen against the combination of hazard* encountered. 2. BASIC POLICY REGARDING USE OF RESPIRATORS 2.1. U*> Condition* Tlie primary objective of respirator programs considered in this guide is to limit the inhalation of airborne contaminants. This objective is to be accomplished first by the application of engineering controls, such a* process change, containment and ventilation; then administrative control, and finally, when .such controls are not feasible or cannot be applied, the use of respiratory protective devices. In genera), the use of respirators as a substitute far other methods of control entails both greater likelihood of accidental exposures and greater likelihood that such exposures may go undetected. It might also subject the wcarcr to additional stress and increase his risk of injury by interfering with his vision, freedom of motion, and ability to communica'e. The provision and the use of respiratory-protective devices are subject to the following considerations. 2.1.1. Routine Operations. Routine operations are planned activities that are generally repetitive and occiir with various frequencies. For such operations, potential sources of airborne contaminants should...
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