The maximum angular exposure of the grinding wheel periphery and sides for safety guards used on cylindrical grinding machines shall not exceed 180. Suitable reinforcement shall be provided for the ceiling rafters or overhead floor beams, where such is necessary, to sustain safely the weight and stress likely to be imposed by the guard. The midrail may be one by four (1 x 4) inches or more. (2) Calenders. (vii) The two hand control device shall protect the operator as specified in paragraph (c)(3)(i)(e) of this section. (4) Inverted swing cutoff saws shall be provided with a hood that will cover the part of the saw that protrudes above the top of the table or above the material being cut. It would normally be preferable to limit the adjustment of the time required in paragraph (h)(6)(vi) to a maximum of 15 seconds. (iii) If two-hand trip systems are used on multiple operator presses, each operator shall have a separate set of controls. Reactivation of the clutch shall require restoration of normal supply and the use of the tripping mechanism(s). (10) Sheaves mean grooved pulleys, and shall be so classified unless used as flywheels. Personal protective equipment shall be used in grinding operations, and equipment shall be used and maintained in accordance with ANSI B7.1-1970, Safety Code for the Use, Care, and Protection of Abrasive Wheels, which is incorporated by reference as specified in 1910.6, and with 1910.215. (vi) The presence sensing device location shall either be set at each tool change and set-up to provide at least the minimum safety distance, or fixed in location to provide a safety distance greater than or equal to the minimum safety distance for all tooling set-ups which are to be used on that press. (35) Interlocked press barrier guard means a barrier attached to the press frame and interlocked so that the press stroke cannot be started normally unless the guard itself, or its hinged or movable sections, enclose the point of operation. Sec. (55) Trip or (tripping) means activation of the clutch to run the press. 1910.1052 Methylene chloride. 1910.166-1910.168 [Reserved] This web site is designed for the current versions of 1910.158 Standpipe and hose systems. Choosing an item from (2) Each circular resaw (other than self-feed saws with a roller or wheel at back of the saw) shall be provided with a spreader fastened securely behind the saw. In all other industries, wood guards shall not be used. (ii) Tap wheels about 45 each side of the vertical centerline and about 1 or 2 inches from the periphery as indicated by the spots in Figure O-25 and Figure O-26. Filing office location. (v) Adjustable guard to be used for starting engine or for running adjustment may be provided at the flywheel of gas or oil engines. (The operational and installation requirements of the PSDI safety system may vary for different applications.). (g) Reports of injuries to employees operating mechanical power presses. The OSHA standards on general guarding of machinery and mechanical power transmission apparatus (29 CFR 1910.212 and 1910.219) are very broad and general minimum guarding standards, one of which was predicated on the 1970's version of the ANSI/ASME B15.1 standard, which itself had undergone several . They shall be designed to provide adequate holding power for all the thicknesses of material being cut. Steam hammers shall be provided with a quick closing emergency valve in the admission pipeline at a convenient location. The upper rail shall be two by four (2 x 4) inches, or two one by four (1 x 4) strips, one at the top and one at the side of posts. The eCFR is displayed with paragraphs split and indented to follow Table O-6 - Minimum Dimensions for Straight Relieved Flanges1. Where belt shifters are not directly located over a machine or bench, the handles shall be cut off six feet six inches (6 ft. 6 in.) The test specifications and procedures shall be made available upon request to the validation organization. 1910.219 - Mechanical power-transmission apparatus. 1910.109 Explosives and blasting agents. (ii) If the belt is of the endless type or laced with rawhide laces, and a belt shifter is not desired, the belt will be considered guarded if the nip point of the belt and pulley is protected by a nip point guard located in front of the cone extending at least to the top of the largest step of the cone, and formed to show the contour of the cone in order to give the nip point of the belt and pulley the maximum protection. (i) Projecting shaft ends shall present a smooth edge and end and shall not project more than one-half the diameter of the shaft unless guarded by nonrotating caps or safety sleeves. Belt shippers and shipper poles. 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. 14, 1988]. (b) As used in 1910.215 unless the context clearly requires otherwise, the following abrasive wheel machinery terms shall have the meanings prescribed in this paragraph. (13) Cutting off wheels means wheels having diameter thickness and hole size dimensions and are subject to all limitations of mounting and use listed for type 1 wheels, the definition in subparagraph (1) of this paragraph and paragraph (d) of 1910.215. The validation organization shall notify the appropriate product manufacturer(s) of any reports from employers of point of operation injuries which occur while a press is operated in a PSDI mode. (iii) The intensity of illumination conforms to the requirements of ANSI A11.1-1965 (R-1970), which is incorporated by reference as specified in 1910.6. Where suspended counterweights are used and not guarded by location, they shall be so encased as to prevent accident. (1) Each circular crosscut table saw shall be guarded by a hood which shall meet all the requirements of paragraph (c)(1) of this section for hoods for circular ripsaws. The hood shall be so mounted as to insure that its operation will be positive, reliable, and in true alignment with the saw; and the mounting shall be adequate in strength to resist any reasonable side thrust or other force tending to throw it out of line. Sprockets and chains. In addition, General Industry applications must adhere to OSHA regulations for Ladder Safety 1910.23 (if applicable) and Walking-Working Surfaces 1910.28. (A) The requirements of paragraphs (b)(7)(xiii), (b)(7)(xiv), (b)(10), (b)(12) and (c)(5)(iii) of this section apply to the pneumatic systems of machines used in the PSDI mode. A summary of part level content is listed below followed by the table of contents, where you can drill down further. Blotters need not be used with the following types of wheels: (ii) Abrasive discs (inserted nut, inserted washer, and projecting-stud type). 1910.1027 Cadmium. (7) Feeder attachments shall have the feed rolls or other moving parts so covered or guarded as to protect the operator from hazardous points. Therefore, the wall dimension W takes precedence over the diameter of the recess as an essential intermediate dimension to describe this shape type. These bars shall operate readily by pressure of the mill operator's body. (3) Bolster plate means the plate attached to the top of the bed of the press having drilled holes or T-slots for attaching the lower die or die shoe. You can learn more about the process However, where an operator must do many operations outside the press, such as lubricating, trimming, deburring, etc., a longer interval up to 30 seconds is permitted. (i) Machines using full revolution clutches shall incorporate a single-stroke mechanism. (3) Machines using full revolution positive clutches. The certification/validation report shall include the following: b. It shall be the responsibility of the employer to maintain all forge shop equipment in a condition which will insure continued safe operation. (2) Each swing cutoff saw shall be provided with an effective device to return the saw automatically to the back of the table when released at any point of its travel. (ix) Diamond wheels, except certain vitrified diamond wheels. Appendix B to Subpart L of Part 1910National Consensus Standards The OSHA catwalk width requirements are found in section 1910.28 (b) (5) (ii) (A). (vi) Equipment shall be kept clean, particularly from accumulations of yellow lead oxide. When a recognized validation organization has filed such a renewal request, its current recognition will not expire until a final decision has been made on the request. (1) Veneer slicer knives shall be guarded to prevent accidental contact with knife edge, at both front and rear. Occupational Safety and Health Administration (OSHA) No current OSHA standards apply specifically to compacting and baling equipment. Type 27 and Type 28 wheels shall be used only with a safety guard located between wheel and operator during use. The interior surface of all guards, by which is meant the surface of the guard with which a belt will come in contact, shall be smooth and free from all projections of any character, except where construction demands it; protruding shallow roundhead rivets may be used. (24) Ejector means a mechanism for removing work or material from between the dies. Control elements shall be checked for correct status after power on and before the initial PSDI stroke. 1910.1450 Occupational exposure to hazardous chemicals in laboratories. Saws to which gum has adhered on the sides shall be immediately cleaned. 4. For that reason, the prohibitions against die-setting in the PSDI mode, and against production in the inch mode are cited to emphasize that inch operation is of reduced safety and is not compatible with PSDI or other production modes. 1910.1043 Cotton dust. Each recognized third-party validation organization and its validating laboratories shall: 1. (i) The cone belt and pulley shall be equipped with a belt shifter so constructed as to adequately guard the nip point of the belt and pulley. Elevated clutch/brake air pressure results in longer stopping time. b. 8. (41) Knockout means a mechanism for releasing material from either die. 1910.504Mini Respiratory Protection Program. (ii) Straight flanges of the adaptor or sleeve type (Table O-7 and Figures O-33 and O-34) shall be undercut so that there will be no bearing on the sides of the wheel within one-eighth inch of the arbor hole. (45) Point of operation means the area of the press where material is actually positioned and work is being performed during any process such as shearing, punching, forming, or assembling. 1910.126 Additional requirements for special dipping and coating operations. (xvi) The control system shall permit only a single stroke per initiation command. Where the operator feeds or removes parts by placing one or both hands in the point of operation, and a two hand control, presence sensing device, Type B gate or movable barrier (on a part revolution clutch) is used for safeguarding: (i) The employer shall use a control system and a brake monitor which comply with paragraphs (b) (13) and (14) of this section; (ii) The exception in paragraph (b)(7)(v)(d) of this section for two hand controls manufactured and installed before August 31, 1971 is not applicable under this paragraph (c)(5); (iii) The control of air clutch machines shall be designed to prevent a significant increase in the normal stopping time due to a failure within the operating valve mechanism, and to inhibit further operation if such failure does occur, where a part revolution clutch is employed. (3) Tail rods or extension piston rods. 1910.426 Mixed-gas diving. The decision shall be made pursuant to the procedures specified in paragraphs I.B.8.b. They shall operate readily when pushed or pulled. [Reserved] Every steam or airhammer shall have a safety cylinder head to act as a cushion if the rod should break or pullout of the ram. (ii) The vertical clearance in passageways between the floor and power transmission beams, ceiling, or any other objects, is not less than five feet six inches (5 ft. 6 in.). Every saw shall be provided with a guard of not less than one-eighth inch sheet metal positioned to stop flying sparks. 7. Compliance with this requirement shall be determined by using the heaviest upper die to be used on the press, and operating at the fastest press speed if there is speed selection. (c) As used in 1910.216, unless the context clearly requires otherwise, the following mills and calenders in the rubber and plastic industries terms shall have the meanings prescribed in this paragraph. 4. (i) Overhead horizontal belts, with lower parts seven (7) feet or less from the floor or platform, shall be guarded on sides and bottom in accordance with paragraph (o)(3) of this section. The materials and dimensions specified in this paragraph shall apply to all guards, except horizontal overhead belts, rope, cable, or chain guards more than seven (7) feet above floor, or platform. tensile strength 50,000 p.s.i.) In powerplants only the lower run of the belt need be guarded. Exceptions are set forth in the remaining subdivisions of this subparagraph. Tail rods or extension piston rods. Installed in the front and in the back of each mill and located within 2 inches of a vertical plane tangent to the front and rear rolls. (i) A main power disconnect switch capable of being locked only in the Off position shall be provided with every power press control system. (3) Bearings. (ii) Where speeds above 250 feet per minute as measured on the surface of the drive roll are used, stopping distances of more than 134 percent are permissible. Appendix E to Subpart L of Part 1910Test Methods for Protective Clothing, Subpart MCompressed Gas and Compressed Air Equipment. (A) The manufacturer's recommended test procedures for checking operation of the presence sensing device. Integrated Tests Certification/Validation. (d) Muting (bypassing of the protective function) of such device, during the upstroke of the press slide, is permitted for the purpose of parts ejection, circuit checking, and feeding.
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