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The safety attributes of a certified/validated PSDI safety system are more likely to be maintained if the quality of the system and its parts, components and subsystem is consistently controlled. Regulation 1910.178(g)(2) also mandates "adequate ventilation" in battery charging areas. See paragraph (b) of 1910.215. The midrail may be one by four (1 x 4) inches or more. 1910.1026 Chromium (VI). Publication. The intent of paragraph (h)(9)(iii) is to prohibit use of mirrors to bend a single light curtain sensing field around corners to cover more than one side of a press. All power-transmission equipment shall be inspected at intervals not exceeding 60 days and be kept in good working condition at all times. (iii) If the cone is located less than 3 feet from the floor or working platform, the cone pulley and belt shall be guarded to a height of 3 feet regardless of whether the belt is endless or laced with rawhide. b. (viii) Those clutch/brake control systems which contain both single and continuous functions shall be designed so that completion of continuous circuits may be supervised by the employer. Rivet making with less than 1-inch diameter is usually a cold forging operation, and therefore not included in this subpart. 1910.1030 Bloodborne pathogens. (i) Every point of operation guard shall meet the following design, construction, application, and adjustment requirements: (a) It shall prevent entry of hands or fingers into the point of operation by reaching through, over, under or around the guard; (b) It shall conform to the maximum permissible openings of Table O-10; (c) It shall, in itself, create no pinch point between the guard and moving machine parts; (d) It shall utilize fasteners not readily removable by operator, so as to minimize the possibility of misuse or removal of essential parts; (e) It shall facilitate its inspection, and. 4. 1. 1910.440 Recordkeeping requirements. (7) Machines using part revolution clutches. Cold trimming presses shall be safeguarded in accordance with 1910.217(c). (f) It shall offer maximum visibility of the point of operation consistent with the other requirements. (2) Brake means the mechanism used on a mechanical power press to stop and/or hold the crankshaft, either directly or through a gear train, when the clutch is disengaged. Limitation: These wheels shall be mounted only with a special tapered flange. (10) Sheaves mean grooved pulleys, and shall be so classified unless used as flywheels. In overhead silent chain-drive guards where the chain is held from lateral displacement on the sprockets, the side clearances required on drives of twenty (20) inch centers or under shall be not less than one-fourth inch from the nearest moving chain part, and on drives of over twenty (20) inch centers a minimum of one-half inch from the nearest moving chain part.