1910.308 Special systems. (xiii) The clutch/brake control shall automatically deactivate in event of failure of the power or pressure supply for the clutch engaging means. For design certification, in the first stage, the manufacturer (which can be an employer) certifies that the PSDI safety system meets the requirements of 29 CFR 1910.217 (a) through (h) and this appendix A, based on appropriate design criteria and tests. Electrical and/or electronic cards or boards assembled with discreet components shall be considered a subsystem and shall require separate testing that the subsystems do not degrade in any of the following conditions: (1) Ambient temperature variation from 20 C to + 50 C. 1. 1/1.1 The certification/validation process should confirm that hazards identified by hazard analysis, (HA), failure mode effect analysis (FMEA), and other system analyses have been eliminated by design or reduced to an acceptable level through the use of appropriate design features, safety devices, warning devices, or special procedures. (1) Inspection. The machine guarding standard, 29 Code of Federal Regulations (CFR 1910.212), always seems to make OSHA's Top 10 Most Frequently Cited list. (g) Guarding friction drives. (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. Similarity analysis should not be accepted when the internal and external stresses on the item being certified/validated are not defined. While it is permitted to use signs to warn people of hazards in addition to those listed in this area, other accident prevention signs and tags can't have the same design and appearance. 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. (i) Air-lift hammers shall have a safety cylinder head as required in paragraph (d)(1) of this section. This section covers all types and shapes of power-transmission belts, except the following when operating at two hundred and fifty (250) feet per minute or less: Flat belts one (1) inch or less in width. Grinding is always performed on rim face, W dimension. In addition, General Industry applications must adhere to OSHA regulations for Ladder Safety 1910.23 (if applicable) and Walking-Working Surfaces 1910.28. 1910.155 Scope, application and definitions applicable to this subpart. (b) Guarding of abrasive wheel machinery -. (1) Inspection and maintenance records. Content of application. 1910.108 [Reserved] Standards covering issues of occupational safety and health which have general application without regard to any specific industry are incorporated by reference in paragraphs (b) through (m) of this section and in subparagraphs (3) and (4) of this paragraph and made applicable under this section. (iv) Light curtains used for PSDI operation shall have minimum object sensitivity not to exceed one and one-fourth inches (31.75 mm). Abrasive wheel machinery guards shall meet the design specifications of the American National Standard Safety Code for the Use, Care, and Protection of Abrasive Wheels, ANSI B7.1-1970, which is incorporated by reference as specified in 1910.6. (1) Forging means the product of work on metal formed to a desired shape by impact or pressure in hammers, forging machines (upsetters), presses, rolls, and related forming equipment. Grinding machines shall be equipped with flanges in accordance with paragraph (c) of this section. (iii) Special Revolving Cup Guards which mount behind the wheel and turn with it. Belts which of necessity must be shifted by hand and belts within seven (7) feet of the floor or working platform which are not guarded in accordance with this section shall not be fastened with metal in any case, nor with any other fastening which by construction or wear will constitute an accident hazard. When flywheel extends into pit or is within 12 inches of floor, a standard toeboard shall also be provided; (iii) When the upper rim of flywheel protrudes through a working floor, it shall be entirely enclosed or surrounded by a guardrail and toeboard. (4) Each hand-fed jointer with horizontal cutting head shall have a guard which will cover the section of the head back of the gage or fence. (b) Anchoring fixed machinery. Appendix C to Subpart L of Part 1910Fire Protection References For Further Information In engine rooms a guardrail, preferably with toeboard, may be used instead of the guard required by paragraph (k)(1) of this section, provided such a room is occupied only by engine room attendants. If such guard is constructed of sheet metal, the material used shall be not less than 116 inch in thickness, and if cast iron is used, it shall be not less than three-sixteenths inch in thickness. 1910.124 General requirements for dipping and coating operations. (3) Each hand-fed circular ripsaw shall be provided with nonkickback fingers or dogs so located as to oppose the thrust or tendency of the saw to pick up the material or to throw it back toward the operator. 1910.309-1910.330 [Reserved], 1910.331 Scope. The guard for the portion of the blade between the sliding guide and the upper-saw-wheel guard shall protect the saw blade at the front and outer side. (2) Guard exposure angles. Flywheels. This exposure shall begin at a point not more than 65 above the horizontal plane of the wheel spindle. Broken pulleys. Type 1 wheels shall be mounted between flanges. (5) Each wood jointer with vertical head shall have either an exhaust hood or other guard so arranged as to enclose completely the revolving head, except for a slot of such width as may be necessary and convenient for the application of the material to be jointed. Such changes in operational conditions as die changes or press relocations not involving disassembly or revision to the safety system would not require recertification/revalidation.). The requirements of paragraph (f)(1) of this section shall also apply to hot trimming presses. The bottom of the guard should come down to within three-eighths inch of a plane formed by the bottom or contact face of the feed roll where it touches the stock. 1. (3) Tail rods or extension piston rods. (c) The control system shall incorporate an antirepeat feature. (ii) furnish and enforce the use of hand tools for freeing and removing stuck work or scrap pieces from the die, so that no employee need reach into the point of operation for such purposes. 1910.214 Cooperage machinery. The certification record shall be made available upon request to the Assistant Secretary for Occupational Safety and Health. (xiv) The control system shall perform checks for proper operation of all cycle control logic element switches and contacts at least once each cycle. (B) The safety distance shall be checked for compliance with (h)(9)(v) of this section. (ii) Safety triprod. The PSDI set-up/reset means required by paragraph (h)(6)(iv) may be initiated by the actuation of a special momentary pushbutton or by the actuation of a special momentary pushbutton and the initiation of a first stroke with two hand controls. 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. A positive-type lockout device for disconnecting the power to the shear shall be provided. Sections 1910.217 and 1910.219 also issued under 5 U.S.C. There are other general safety precautions which should be followed by everyone even if they dont work directly with conveyors. Where passage is regarded as necessary, there shall be a platform over the lower run guarded on either side by a railing completely filled in with wire mesh or other filler, or by a solid barrier. Steam hammers shall be provided with a means of cylinder draining, such as a self-draining arrangement or a quick-acting drain cock. (h) Modified types 6 and 11 wheels (terrazzo). 1. The test results shall provide the engineering data necessary to establish confidence that the hardware and software will meet specifications, the manufacturing process has adequate quality control and the data acquired was used to establish processes, procedures, and test levels supporting subsequent hardware design, production, installation and maintenance. Workers who operate and maintain machinery suffer approximately 18,000 amputations, lacerations, crushing injuries, abrasions, and over 800 deaths per year. All guards for inclined belts shall be arranged in such a manner that a minimum clearance of seven (7) feet is maintained between belt and floor at any point outside of guard. (40) Jog means an intermittent motion imparted to the slide by momentary operation of the drive motor, after the clutch is engaged with the flywheel at rest. 1910.422 Procedures during dive. A safety triprod, cable, or wire center cord shall be provided across each pair of in-running rolls extending the length of the face of the rolls. Blocks or wedges shall be made of material the strength and construction of which should meet or exceed the specifications and dimensions shown in Table O-11. (i) Presses operated in the PSDI mode shall be equipped with a brake monitor that meets the requirements of paragraphs (b)(13) and (b)(14) of this section. (ii) Scheduling and recording the inspection of guards and point of operation protection devices at frequent and regular intervals. (e) The safety distance (Ds) from the sensing field to the point of operation shall be greater than the distance determined by the following formula: Ds = minimum safety distance (inches); 63 inches/second = hand speed constant; Ts = stopping time of the press measured at approximately 90 position of crankshaft rotation (seconds). (4) Hand feeding tools. The manufacturer or the manufacturer's representative shall certify to and submit to an OSHA-recognized third-party validation organization the documentation necessary to demonstrate that the PSDI safety system design is in full compliance with the requirements of 29 CFR 1910.217(a)-(h) and this appendix A, as applicable, by means of analysis, tests, or combination of both, establishing that the following additional certification/validation requirements are fulfilled. The maximum anticipated working pressures in any hydraulic system on a mechanical power press shall not exceed the safe working pressure rating of any component used in that system. (v) The employer shall provide brushes, swabs, lubricating rolls, and automatic or manual pressure guns so that operators and diesetters shall not be required to reach into the point of operation or other hazard areas to lubricate material, punches or dies. (ii) A red color stop control shall be provided with the clutch/brake control system. (viii) Supplemental safeguarding shall be used to protect all areas of access to the point of operation which are unprotected by the PSDI presence sensing device. The regular oilers shall wear tight-fitting clothing. Subpart O - Machinery and Machine Guarding. The explanation and use of the scale shall be documented. (ix) A scale guard of substantial construction shall be provided at the back of every press, so arranged as to stop flying scale. View the most recent official publication: These links go to the official, published CFR, which is updated annually. 1910.1045 Acrylonitrile. The application need not be submitted on a Federal form. The upper run shall be so guarded as to prevent contact therewith either by the worker or by objects carried by him. 1. Such cross-referencing of specific requirements from paragraphs (a) through (g) of this section is intended only to enhance convenience and understanding in relating to the new provisions to the existing standard, and is not to be construed as limiting the applicability of other provisions in paragraphs (a) through (g) of this section. This prohibition is needed to increase the reliability of the presence sensing device in initiating a stroke only when the desired work motion has been completed. (s) Inspection and maintenance of woodworking machinery. 1910.425 Surface-supplied air diving. a. 1910.3 Petitions for the issuance, amendment, or repeal of a standard. It is free of direct influence or control by manufacturers, suppliers, vendors, representatives of employers and employees, and employer or employee organizations; and. (7) Feeder attachments shall have the feed rolls or other moving parts so covered or guarded as to protect the operator from hazardous points. When blotters or flange facings of compressible material are required, they shall cover entire contact area of wheel flanges. (14) No saw, cutter head, or tool collar shall be placed or mounted on a machine arbor unless the tool has been accurately machined to size and shape to fit the arbor. (xi) Where there is more than one operator of a press used for PSDI, each operator shall be protected by a separate, independently functioning, presence sensing device. 1910.254 Arc welding and cutting. (1) Each circular hand-fed ripsaw shall be guarded by a hood which shall completely enclose that portion of the saw above the table and that portion of the saw above the material being cut. In powerplants only the lower run of the belt need be guarded. 12-71 (36 FR 8754), 8-76 (41 FR 25059), 9-83 (48 FR 35736), 1-90 (55 FR 9033), 5-2002 (67 FR 65008), or 1-2012 (77 FR 3912), as applicable; 20 CFR part 1911. 1910.145 Specifications for accident prevention signs and tags. Belt shifter and clutch handles shall be rounded and be located as far as possible from danger of accidental contact, but within easy reach of the operator. (See Figures O-18, O-19, O-20, O-21, O-22, and O-23.). (4) Exposed to contact means that the location of an object is such that a person is likely to come into contact with it and be injured. Where loose pulleys or idlers are not practicable, belt perches in form of brackets, rollers, etc., shall be used to keep idle belts away from the shafts. (This may be through reference to published sources which describe the test methods or procedures used.). (i) Cutting-off wheels, Types 1 and 27A (see paragraphs (c)(1) (ii) and (iii) of this section). (4) Clutch means the coupling mechanism used on a mechanical power press to couple the flywheel to the crankshaft, either directly or through a gear train. The clearance between the edge of the rear table and the cutter head shall be not more than one-eighth inch. (1) Hazards to personnel associated with broken or falling machine components. (30) Foot control means the foot operated control mechanism designed to be used with a clutch or clutch/brake control system. 1 Flanges for wheels under 2 inches diameter may be unrelieved and shall be maintained flat and true. Displaying title 29, up to date as of 3/02/2023. (3) Steam hammers mean a type of drop hammer where the ram is raised for each stroke by a double-action steam cylinder and the energy delivered to the workpiece is supplied by the velocity and weight of the ram and attached upper die driven downward by steam pressure. (1) Each planing, molding, sticking, and matching machine shall have all cutting heads, and saws if used, covered by a metal guard. Bearings shall be kept in alignment and properly adjusted. (b) Portable wheels with threaded inserts or projecting studs. (53) Stripper means a mechanism or die part for removing the parts or material from the punch. 1910.162 Fixed extinguishing systems, gaseous agent. (vii) Controls for more than one operating station shall be designed to be activated and deactivated in complete sets of two operator's hand controls per operating station by means capable of being supervised by the employer. 1910.334 Use of equipment. Installed at front and back of each mill having a 46-inch roll height or over. Overhead rope drive and block and roller-chain-drive guards shall be not less than six (6) inches wider than the drive on each side. (5) Excluded machinery. (1) The employer shall report, within 30 days of the occurrence, all point-of-operation injuries to operators or other employees to either the Director of the Directorate of Standards and Guidance at OSHA, U.S. Department of Labor, Washington, DC 20210 or electronically at http://www.osha.gov/pls/oshaweb/mechanical.html; or to the State Agency administering a plan approved by the Assistant Secretary of Labor for Occupational Safety and Health. Wheels bonded with clay, glass, porcelain or related ceramic materials are characterized as vitrified bonded wheels. All surrounding floors shall be kept in good condition and free from obstructions, grease, oil, and water. A means of air lubrication shall be provided when needed. 1910.125 Additional requirements for dipping and coating operations that use flammable liquids or liquids with flashpoints greater than 199.4 F (93 C). 1910.1020 Access to employee exposure and medical records. 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. A minimum object sensitivity of one and one-fourth inches (31.75 mm) means that a one and one-fourth inch (31.75 mm) diameter object will be continuously detected at all locations in the sensing field. A slide is also called a ram, plunger, or platen. (3) Each hand-fed jointer with a horizontal cutting head shall have an automatic guard which will cover all the section of the head on the working side of the fence or gage. Operation of the Inch operating means engages the driving clutch so that a small portion of one stroke or indefinite stroking can occur, depending upon the length of time the Inch operating means is held operated. 1910.29 Fall protection systems and falling object protectioncriteria and practices. e-CFR 1910.219 (a) General requirements. (C) Maintain a certification record of each inspection, and each maintenance and repair task performed, under the general component of the inspection program that includes the date of the inspection, maintenance, or repair work, the signature of the person who performed the inspection, maintenance, or repair work, and the serial number, or other identifier, of the power press inspected, maintained, and repaired. (2) Hand-operated gears. This responsibility includes: (i) Establishing periodic and regular maintenance safety checks and keeping certification records of these inspections which include the date of inspection, the signature of the person who performed the inspection and the serial number, or other identifier, for the forging machine which was inspected. (See paragraph (d)(5) of this section.). (v) The employer shall notify the OSHA-recognized third-party validation organization within five days whenever a component or a subsystem of the safety system fails or modifications are made which may affect the safety of the system. site when drafting amendatory language for Federal regulations: 1910.151 Medical services and first aid. If they sound cracked (dead), they shall not be used. If you work for a Federal agency, use this drafting (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. Types of Tests Acceptable for Certification/Validation. 1 Note: Must be large enough to extend beyond the bushing. It is recommended, however, that no projecting setscrews or oilcups be used in any revolving pulley or part of machinery. (3) Auxiliary equipment. The stopping time measurements should be made with the heaviest upper die that is planned for use in the press. After receipt of a notification of preliminary disapproval, the applicant may submit a revised application for further review by OSHA pursuant to subsection I.B. Similarly, only presses with a configuration such that a person's body cannot completely enter the bed area are approved for PSDI. 1910.219 (a) (1) This section covers all types and shapes of power-transmission belts, except the following when operating at two hundred and fifty (250) feet per minute or less: 1910.219 (a) (1) (i) Flat belts one (1) inch or less in width, 1910.219 (a) (1) (ii) (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. When the bearing surfaces become worn, warped, sprung, or damaged they should be trued or refaced. 3 Slenderness ratio formula for short columns is L/d = 11, where L = length of timber in inches and d = least dimension in inches; this ratio should not exceed 11. (ix) Diamond wheels, except certain vitrified diamond wheels. (12) Upsetters (or forging machines, or headers) type of forging equipment, related to the mechanical press, in which the main forming energy is applied horizontally to the workpiece which is gripped and held by prior action of the dies. The third-party validation organization shall validate the manufacturer's certification under paragraphs 2 and 3. Appendix C to Subpart T of Part 1910Alternative Conditions Under 1910.401(a)(3) for Recreational Diving Instructors and Diving Guides (Mandatory). Eligibility. above floor level. 1910.12 Construction work. (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.

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