CoatingsPro Magazine

MAR 2015

CoatingsPro offers an in-depth look at coatings based on case studies, successful business operation, new products, industry news, and the safe and profitable use of coatings and equipment.

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34 MARCH 2015 COATINGSPROMAG.COM or 29 CFR 1910.34) jobsites. Parag raph (d)(1) of the OSH A Respirator y Protection Standard requires that the employer "…select and prov ide an appropr iate respirator based on the respirator y ha zard(s) to which the worker is ex posed and workplace and user factors that af fect respirator per for mance and reliabi l- it y." T he ha zard eva luation must be "…a reasonable estimate of employee ex posures to respirator y ha zard(s) and an identif ication of the contam- inant 's chemica l state and physica l for m. W here the employer cannot identif y or reasonably estimate the employee ex posure, the employer sha l l consider the atmosphere to be IDLH." (IDLH stands for Immed iately Dangerous to Life and Hea lth.) An IDLH atmosphere, according to the OSHA Respiratory Protection Standard is a work area that has "…an atmosphere that poses an immediate threat to life, would cause irreversible adverse health efects, or would impair an individual 's ability to escape from a dangerous atmosphere." Tis includes oxygen-defcient atmospheres or atmospheres with an oxygen concen- tration of less than 19.5 percent. W hen entering a confned space, that means, at a minimum, oxygen concentrations in the work area must be determined in order for the work area not to fall under the IDLH classifcation. For work areas that must be classi- fed as IDLH due to oxygen defciency or lack of a hazard evaluation, paragraph (d) requires that procedures for use of respiratory protection include the following: • Entrants must be provided with a self-contained breathing apparatus (SCBA) or airline respirators with auxiliary escape SCBAs operated in the pressure-demand mode. • One employee or, when needed, more than one employee is located outside the IDLH atmosphere at all times. • Visual, voice, or signal line commu- nication must be maintained between the employee(s) in the IDLH atmosphere and the employ- ee(s) located outside the IDLH atmosphere at all times. • The employee(s) located outside the IDLH atmosphere must be trained and equipped to provide effective emergency rescue. This must include appropriate retrieval equipment (e.g., hoists, harnesses, lifelines, etc.) designed for remov- ing the employee(s) who enter the hazardous atmosphere. Retrieval equipment shall be provided where it would contribute to the rescue of the employee(s) and would not increase the overall risk resulting from entry. Where it is determined that the use of retrieval equipment is not practi- cal, equivalent means for removing employees must be provided. For example, retrieval equipment would not be used if there is an entangle- ment hazard. In this case, rescue procedures, training, and equipment may have to be in place so that rescue team personnel can enter the confined space to retrieve an incapacitated entrant. For work areas regulated under 29 CFR 1910.146, the work area must be evaluated to determine whether or not the confned space is permit-required. Te criteria for determining whether a confned space is permit-required can be found in 29 CFR 1910.146 paragraph (b). If the confned space is permit-required, rescue procedures must also comply with paragraph (k) of this standard for Medical and First Aid regulations. Hazard Evaluation As mentioned earlier, evaluating oxygen concentrations in the work area is the minimum required for a work area hazard evaluation. Typically, oxygen levels are determined using a direct reading meter with an oxygen sensor. To determine what other hazards may be present (e.g., concen- tration and physical state, such as dust, The siz e and geom e tric configuration o f the work ar ea may af f ec t the p o tential f or accumulation o f atm osp heric contaminant s . Safety Watch

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