Respiratory devices

Saliva can carry disease organisms. To minimize the transmission of disease, disposable cardboard mouthpieces are used with many respiratory measurement devices. Respiratory devices should, if possible, be designed to include sterilizable parts in the airflow path. This would reduce the possibility that microbes hitchhiking on aerosol particles would be passed from patient to patient. When appropriate, disposable Alters may also help prevent microbe transmission. 

The exposme-outcome results often form the basis of the application of safety technology to injmy prevention and control. Industrial deafness has drawn the attention of safety engineering experts in the application of hearing protection devices. Respiratory protection has required the development of a range of controls to address a wide range of risks, from simple dust masks to the more elaborate use of positive pressme air-supphed respirators. 

Nickel carbonyl should be used in totally enclosed systems or under good local exhaust. Plants and laboratories where nickel carbonyl is used should make use of air-monitoring devices, alarms should be present in case of accidental leakage, and appropriate personal respiratory protective devices should be readily available for emergency uses. Monitoring of urinary nickel levels is useful to help determine the severity of exposure and identify appropriate treatment measures. Some large-scale users of nickel carbonyl maintain a supply of sodium diethyldithiocarbamate, or Antabuse, a therapeutic agent, on hand for use in case of overexposure. 

NIOSH/MSHA-approved respiratory protection devices should be used. For skin protection, use of protective garments and gloves of Viton, Nitrile, or PVA constmction should be made. The acute effects of overexposure to styrene are shown in Table 6 (74). 

The British Standard also uses the Assigned Protection Eactor, i.e. tlie level of respiratory protection that can realistically be expected to be achieved in the workplace by 95% of adequately trained and supervised workers, using a properly functioning and correctly fitted respiratory protective device (see Table 13.9)... 

Withdrawn) 1990 Eull face masks for respiratory protective devices. Withdrawn, superseded by BS EN 136 1998... 

Withdrawn) 1990 AMD 1 Half masks and quarter masks for respiratory protective devices (AMD 7113) dated 15 November 1992. Withdrawn, superseded by BS EN 140 1999 Guide to the use of electrical apparatus complying with BS 5501 or BS 6491 m the presence of combustible dusts... 

Respiratory protective devices - Definitions of terms and pictograms. Superseded BS 6927 1988... 

Respiratory protective devices - Classification superseded BS 6928 1988 Respiratory protective devices - List of equivalent terms. Supersedes BS 6930 1988 Respiratory protective devices - Full face masks - Requirements, testing, marking. Supersedes BS EN 136-10 1992 and BS 7355 1990... 

AMD 1 Respiratory protective devices self-contained open-circuit compressed air breathing apparatus (AMD 8167J dated 15 May 1994. Supersedes BS 7004 1988 and BS 4667 Part 2 1974... 

AMD 2 Respiratory protective devices - Compressed air line breathing apparatus for use with a full face mask, half mask or a mouthpiece assembly - Requirements, testing, marking (AMD 10774J dated Januai-y 2000. With BS EN 138, BS EN 269 and BS EN 270, superseded BS 4667-3 1974... 

Respiratory protective devices for self rescue - Self-contained closed circuit breathing apparatus... 

We should keep in mind that the main difference between level D and C equipment is the amount of respiratory protection. Level C protection requires use of a respiratory device (APR). Requiring workers to work in level C for more than a small percentage of the time can prove to be a challenging situation for both workers and managers. Respirators, especially full-face respirators, can provide excellent protection for workers, but are also found to be a source for worker complaints. 

We discuss respirators as part of PPE later in this chapter. We also provide figures of a variety of different types of respiratory protective devices. 

Is PPE selected and used to meet the requirements of 29 CER Part 1910, Subpart I (eye and face protection, respiratory protection, occupational head protection, occupational foot protection, and electrical protection devices) ... 

Full-face respirator A respiratory protective device that covers the entire face from hairline to under the chin. 

NPFs achievable with different respiratory protection devices are summarized in Table 11.18, subject to correct fitting and maintenance. 

Compressed airline system a facepiece or hood is connected to a filter box and hand-operated regulator valve which is provided with a safety device to prevent accidental complete closure. Full respiratory, eye and facial protection is provided by full-facepiece versions. The compressed air is supplied from a compressor through a manifold or from cylinders. 

BS6929 Respiratory protective devices (component nomenclature). 

BS7004 Respiratory protective devices (self-contained open-circuit). 

BS7156 Respiratory protective devices threads for facepieces (2 parts). 

BS7309 Mouthpiece assemblies for respiratory protective devices. 

BS7355 Respiratory protective devices (full-face masks). 

BS7356 Respiratory protective devices (half- and quarter-masks). 

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