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- b. An adequate rescue procedure. <br />C. Someone to be readily available who has been trained in cardio- <br />pulmonary resuscitation (CPR). <br />3. Equipment for confined space entry: <br />a. A combination combustible gas/oxygen meter which samples for <br />combustible vapors and oxygen deficiency simultaneously is <br />suggested. However, individual meters to sample for combustible <br />atmospheres and oxygen deficiency may also be used. <br />b. Supplied -air breathing apparatus, such as a self-contained <br />respirator with full face piece operated in pressure demand mode <br />(SCBA), or Type-C supplied -air respirator with full face piece <br />operated in pressure demand mode with an emergency backup <br />SCBA or escape bottle operated in a pressure demand mode, must <br />be in atmospheres immediately dangerous to life. <br />C. A supplied -air Type-C respirator, in either continuous flow or <br />pressure demand mode, may be used in areas which are not <br />immediately hazardous to life and from which the wearer can <br />readily escape. <br />d. Harness and Lifelines: Harness should be capable of retrieving an <br />inert body in an upright position. A parachute -type harness, with a <br />single lifting ring attached to the upper back, or with duel lifting <br />rings attached to the shoulder strap is recommended for work in <br />open areas. Where egress through narrow openings is necessary, <br />wristlets with attached lifting rings may be required instead of a <br />body harness. Sufficient lifelines of at least one-half inch manila <br />must be provided to insure constant connection between the worker <br />In the confined space and the attendant outside. <br />e. Ventilation: A portable blower with a minimum capacity of 600 cfm <br />a 1/5 inches static pressure should be used to supply air and <br />ventilate the enclosed space prior to and during the occupancy. If <br />the space is large enough, additional air volume may be required. <br />4. Maintenance of Equipment - a specifically trained person must: <br />a. Maintain and issue all required self-contained and/or supplied -air <br />breathing apparatus. <br />b. Maintain and insure calibration of all combustible gas/oxygen <br />meters which must be readily available as required. <br />