(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. (4) Work rests. (8) Die handling. (4) Reconstruction and modification. When dies are being changed or maintenance is being performed on the press, the following shall be accomplished: (i) The power to the press shall be locked out. For compliance with these requirements, the average value of the stopping time, Ts, shall be the arithmetic mean of at least 25 stops for each stop angle initiation measured with the brake and/or clutch unused, 50 percent worn, and 90 percent worn. (A) Where presses that have slide counterbalance systems are used in the PSDI mode, the counterbalance system shall also meet the requirements of paragraph (b)(9) of this section. This subparagraph does not apply to keys or setscrews within gear or sprocket casings or other enclosures, nor to keys, setscrews, or oilcups in hubs of pulleys less than twenty (20) inches in diameter where they are within the plane of the rim of the pulley. (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. These devices shall be long enough to enable a man to reach the full length of the die without placing his hand or arm between the dies. (3) For combination or universal woodworking machines each point of operation of any tool shall be guarded as required for such a tool in a separate machine. A safety trip control shall be provided in front and in back of each mill. (6) Multiple wheel mounting. 1910.8 OMB control numbers under the Paperwork Reduction Act. (8) Hinged saw tables shall be so constructed that the table can be firmly secured in any position and in true alignment with the saw. 1910.401 Scope and application. (b) The control system shall be designed to permit an adjustment which will require concurrent pressure from both hands during the die closing portion of the stroke. If you work for a Federal agency, use this drafting 1910.7 Definition and requirements for a nationally recognized testing laboratory. (e) Trip and emergency switches. Stopping distances shall be expressed in inches of surface travel of the roll from the instant the emergency stopping device is actuated. (1) Antirepeat means the part of the clutch/brake control system designed to limit the press to a single stroke if the tripping means is held operated. Shafting shall be kept in alignment, free from rust and excess oil or grease. 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. (iii) Following a die change, the safety distance, the proper application of supplemental safeguarding, and the slide counterbalance adjustment (if the press is equipped with a counterbalance) shall be checked and maintained by authorized persons whose qualifications include knowledge of the safety distance, supplemental safeguarding requirements, and the manufacturer's specifications for counterbalance adjustment. Sections 1910.217 and 1910.219 also issued under 5 U.S.C. Appendix B to Subpart T of Part 1910Guidelines for Scientific Diving 1910.166-1910.168 [Reserved] 4. (11) Off-hand grinding means the grinding of any material or part which is held in the operator's hand. 1910.335 Safeguards for personnel protection. (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. (d) Fluid compatability with other materials, (d) Material stress tolerances and limits, (e) Stability to long term power fluctuations, (g) Repeatability of measured parameter without inadvertent initiation of a press stroke, (h) Operational life of components in cycles, hours, or both, (1) Specific operational wave lengths; and. 1910.6 Incorporation by reference. (3) Block means a short block of wood, provided with a handle similar to that of a plane and a shoulder at the rear end, which is used for pushing short stock over revolving cutters. Hangers. The removal of a hand from any control button shall cause the slide to stop. It is not an official legal edition of the CFR. user convenience only and is not intended to alter agency intent 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. 29 U.S.C. Tr = Longest response time, in seconds, of all interposing control elements between the presence sensing device and the clutch/brake operating mechanism(s). OSHA may inspect the facilities of the third-party validation organization and any validating laboratory, and while there shall review any additional documentation underlying the application. Flywheels. (2) Vertical and inclined belts (paragraphs (e) (3) and (4) of this section) if not more than two and one-half (212) inches wide and running at a speed of less than one thousand (1,000) feet per minute, and if free from metal lacings or fastenings may be guarded with a nip-point belt and pulley guard. Mounts which are affixed to the wheel by the manufacturer shall not be reused. Where the work is applied to the wheel above the horizontal centerline, the exposure of the grinding wheel periphery shall be as small as possible and shall not exceed 60. (C) The air pressure supply for clutch/brake valves on machines used in the PSDI mode shall be regulated to pressures less than or equal to the air pressure used when making the stop time measurements required by paragraph (h)(2)(ii) of this section. The test specification and procedure shall be submitted to the validation organization for review and validation prior to the test. This exposure shall begin at a point not more than 65 above the horizontal plane of the wheel spindle. (2) The report shall include the following information: (i) Employer's name, address and location of the workplace (establishment). The objective of the certification/validation program is to demonstrate and document that the system satisfies specification and operational requirements for safe operations. (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. The written procedures for test and certification/validation of PSDI systems, and the standards and test methods on which they are based, shall be reproducible and be available to OSHA and to the public upon request. Types of Tests Acceptable for Certification/Validation. (iv) There are three general types of flanges: (a) Straight relieved flanges (see Figure O-32); (b) Straight unrelieved flanges (see Figure O-30); (c) Adaptor flanges (see Figures O-33 and O-34); (v) Regardless of flange type used, the wheel shall always be guarded. (1) General requirements. 3. 1910.164 Fire detection systems. (3) All double-spindle shapers shall be provided with a spindle starting and stopping device for each spindle. The certifications are made to the validation organization. This checklist covers regulations issued by the U.S. Department of Labor, Occupational Safety and Health Administration (OSHA) under the general industry standard 29 CFR 1910.23. Vertical belts running over a lower pulley more than seven (7) feet above floor or platform shall be guarded at the bottom in the same manner as horizontal overhead belts, if conditions are as stated in paragraphs (e)(2)(ii) (a) and (c) of this section. (61) Presence sensing device initiation means an operating mode of indirect manual initiation of a single stroke by a presence sensing device when it senses that work motions of the operator, related to feeding and/or removing parts, are completed and all parts of the operator's body or hand tools are safely clear of the point of operation. The recommendations of the brake system manufacturer shall be used to simulate or estimate the brake wear. (ii) A red color stop control shall be provided with the clutch/brake control system. (g) Enclosing the point of operation before a press stroke can be initiated, so as to prevent an operator from reaching into the point of operation prior to die closure or prior to cessation of slide motion during the downward stroke. (i) Both flanges, of any type, between which a wheel is mounted, shall be of the same diameter and have equal bearing surface. The bottom of the guard shall come to within three-eighths inch of a plane formed by bottom or contact face of the feed roll where it touches the stock. As a A validation organization may not terminate its installation certification and recertification validation functions earlier than either one year from the date of the written notice, or the date on which another recognized validation organization is able to perform the validation of installation certification and recertification. (1) Hazards to personnel associated with broken or falling machine components. Upsetters shall be provided with a means for locking out the power at its entry point to the machine and rendering its cycling controls inoperable. Background and more details are available in the The manufacturer's certification shall be validated by an OSHA-recognized third-party validation organization to meet all applicable requirements of paragraphs (a) through (h) and appendix A of this section. Spacers shall be equal in diameter to the mounting flanges and have equal bearing surfaces. (13) Whenever veneer slicers or rotary veneer-cutting machines have been shutdown for the purpose of inserting logs or to make adjustments, operators shall make sure that machine is clear and other workmen are not in a hazardous position before starting the machine. (b) 12-inch diameter wheel, 1,000 revolutions per minute. 1910.1017 Vinyl chloride. Higher voltages that may be necessary for operation of machine or control mechanisms shall be isolated from any control mechanism handled by the operator, but motor starters with integral Start-Stop buttons may utilize line voltage control. (v) For cutting-off wheels larger than 16 inches diameter and where speed does not exceed 14,200 surface feet per minute, safety guards as specified in Figures O-27 and O-28, and in Table O-1 shall be used. Prior to conducting the brake system test required by paragraph (h)(2)(ii), a visual check shall be made of the springs. Note: These flanges may be clamped together by means of a central nut, or by a series of bolts or some other equivalent means of fastening. If made of metal shapes or bars, their section shall be equal in strength to that of one and one-half (112) by one and one-half (112) by three-sixteenths (316) inch angle iron. (a) The device may not be used on machines using full revolution clutches. Demonstration of a thorough inspection of the entire press and PSDI safety system to ascertain that the installation, components and safeguarding have not been changed, modified or tampered with since the installation certification/validation or last recertification/revalidation was made. The provisions of paragraph (h) of this section shall apply to boltheading. (A) Presence sensing devices used as supplemental safeguarding shall not initiate a press stroke, and shall conform to the requirements of paragraph (c)(3)(iii) and other applicable provisions of this section, except that the safety distance shall comply with paragraph (h)(9)(v) of this section. Integrated Tests Certification/Validation. All drip cups and pans shall be securely fastened. However, the guarding of these gears is highly recommended. (iv) The employer shall provide and enforce the use of safety blocks for use whenever dies are being adjusted or repaired in the press. (1) Machine guarding. Control components shall be selected, constructed, and connected together in such a way as to withstand expected operational and environmental stresses, at least including those outlined in appendix A. By a band guard covering the face of gear and having flanges extended inward beyond the root of the teeth on the exposed side or sides. This is where OSHA comes into the picture. Every saw shall be provided with a guard of not less than one-eighth inch sheet metal positioned to stop flying sparks. Each recognized third-party validation organization and its validating laboratories shall: 1. (7) Direct drive means the type of driving arrangement wherein no clutch is used; coupling and decoupling of the driving torque is accomplished by energization and deenergization of a motor. For flywheels with smooth rims five (5) feet or less in diameter, where the preceding methods cannot be applied, the following may be used: A disk attached to the flywheel in such manner as to cover the spokes of the wheel on the exposed side and present a smooth surface and edge, at the same time providing means for periodic inspection. The hood and mounting shall be arranged so that the hood will automatically adjust itself to the thickness of and remain in contact with the material being cut but it shall not offer any considerable resistance to insertion of material to saw or to passage of the material being sawed. (11) Band type guards - general specifications. Guarding friction drives. B. Analytical methods may be used in lieu of, in combination with, or in support of tests to satisfy specification requirements. 1910.143 Nonwater carriage disposal systems. 1910.120 Hazardous waste operations and emergency response. (13) Control reliability. 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. 1910.120 Hazardous waste operations and emergency response. (iii) Table O-8 and Figure O-35 show minimum dimensions for straight flanges that are an integral part of wheel sleeves which are frequently used on precision grinding machines. The following terms and conditions shall be part of every recognition: a. tensile strength 50,000 p.s.i.) The clutch/brake control system shall be designed and constructed to prevent actuation of the clutch if all operating stations are bypassed. The employer shall provide means for handling scrap from roll feed or random length stock operations. If the frame of the belt shifter does not adequately guard the nip point of the belt and pulley, the nip point shall be further protected by means of a vertical guard placed in front of the pulley and extending at least to the top of the largest step of the cone. If made of wood, the posts shall be two by four (2 x 4) inches or larger. (i) The requirements of paragraph (h) shall apply to all part revolution mechanical power presses used in the PSDI mode of operation. (5) Excluded machinery. Control elements shall be checked for correct status after power on and before the initial PSDI stroke. Conveyor Safety When used incorrectly, they can be dangerous. Subpart GOccupational Health and Environmental Control. There are other general safety precautions which should be followed by everyone even if they dont work directly with conveyors. (2) Each drum sanding machine shall have an exhaust hood, or other guard if no exhaust system is required, so arranged as to enclose the revolving drum, except for that portion of the drum above the table, if a table is used, which may be necessary and convenient for the application of the material to be finished. Dimensions of such flanges shall never be less than indicated. Push sticks or push blocks shall be provided at the work place in the several sizes and types suitable for the work to be done. This trimming operation can also be done cold, as can coining, a product sizing operation. (iii) The pedal return spring(s) shall be of the compression type, operating on a rod or guided within a hole or tube, or designed to prevent interleaving of spring coils in event of breakage. Guards. (2) Guard exposure angles. (33) Die enclosure guard means an enclosure attached to the die shoe or stripper, or both, in a fixed position. (i) Machines using full revolution clutches shall incorporate a single-stroke mechanism. 1. The employer shall train and instruct the operator in the safe method of work before starting work on any operation covered by this section. 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. (5) Exposure of blades. Available from the CSST Document Center (English website under construction) (RJ-510071). . 1910.12 Construction work. This content is from the eCFR and is authoritative but unofficial.