Nonmandatory supplementary information and guidelines relating to certification/validation of the PSDI safety system are provided to appendix B to this standard. of this appendix, above, not less than 180 calendar days, nor more than one year, before the expiration date of its current recognition. If the preliminary decision is in favor of recognition, a member of the public, or if the preliminary decision is against recognition, the applicant may request a public hearing by the close of the comment period, if it supplies detailed reasons and evidence challenging the basis of the Assistant Secretary's preliminary decision and justifying the need for a public hearing to bring out evidence which could not be effectively supplied through written submissions. Safety Standard for Guarding of Machinery and Mechanical Power Transmission Apparatus. (x) Hand tools. The spreader shall be made of hard tempered steel, or its equivalent, and shall be thinner than the saw kerf. (i) Tight and loose pulleys on all new installations made on or after August 31, 1971, shall be equipped with a permanent belt shifter provided with mechanical means to prevent belt from creeping from loose to tight pulley. 1910.1003 13 Carcinogens (4-Nitrobiphenyl, etc.). (ii) The safety system shall be designed, constructed, and arranged as an integral total system, including all elements of the press, the controls, the safeguarding and any required supplemental safeguarding, and their interfaces with the operator and that part of the environment which has effect on the protection against point of operation hazards. (12) Pressure vessels. When refacing or truing, care shall be exercised to make sure that proper relief and rigidity is maintained as specified in paragraphs (c) (2) and (5) of this section and they shall be replaced when they do not conform to these subparagraphs and Table O-4, Figure O-30, Table O-5, Figure O-31, Table O-6, Figure O-32, and Table O-8, Figure O-35. This exposure shall begin at a point not more than 65 above the horizontal plane of the wheel spindle. Appendix A to Subpart S of Part 1910 References for Further Information. (iii) Special Revolving Cup Guards which mount behind the wheel and turn with it. (c) The safety distance (Dm) between the two hand trip and the point of operation shall be greater than the distance determined by the following formula: Dm = minimum safety distance (inches); 63 inches/second = hand speed constant; Tm = the maximum time the press takes for the die closure after it has been tripped (seconds). 1910.155 Scope, application and definitions applicable to this subpart. 1910.112-1910.113 [Reserved] Acceptable design features shall demonstrate, in the following order or precedence, that: (1) No single failure points may cause injury; or. [39 FR 23502, June 27, 1974, as amended at 49 FR 5323, Feb. 10, 1984; 61 FR 9240, Mar. 1910.242 Hand and portable powered tools and equipment, general. 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.). Following a deactivation of PSDI by the timer, the system shall make it necessary to reset the set-up/reset means in order to reactivate the PSDI mode. A recognized validation organization may apply to OSHA for an expansion of its current recognition to cover other categories of PSDI certification/validation in addition to those included in the current recognition. A recognized validation organization may renew its recognition by filing a renewal request at the address in paragraph I.A.3. Unless the distance to the nearest fixed pulley, clutch, or hanger exceeds the width of the belt used, a guide shall be provided to prevent the belt from leaving the pulley on the side where insufficient clearance exists. The exception in paragraph (b)(7)(xi) of this section for controls manufactured and installed before August 31, 1971, is not applicable under this paragraph (c)(5). The employer shall insure by adequate supervision that correct operating procedures are being followed. 1910.21 Scope and definitions. 1910.307 Hazardous (classified) locations. Table O-2 - Exposure Versus Wheel Thickness, Table O-4 - Minimum Dimensions for Straight Unrelieved Flanges for Wheels with Threaded Inserts or Projecting Studs. 1910.1007 3,-Dichlorobenzidine (and its salts). Belt perches. (See paragraph (d)(6) of this section.). [Reserved] (iii) 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. (i) Limitations: Special supporting, back adapter and inside flange nuts are required for the proper mounting of these types of wheels subject to limitations of 1910.215(c)(4) (i) and (ii). All revolving collars, including split collars, shall be cylindrical, and screws or bolts used in collars shall not project beyond the largest periphery of the collar. After receipt of an application, OSHA may request additional information if it believes information relevant to the requirements for recognition have been omitted. c. Function completion means for, electrical, electromechanical and electronic devices, when the circuit produces a change of state in the output element of the device. Cast iron (min. 3. Limitation: Minimum back thickness, E dimension, should not be less than one-fourth T dimension. 1910.124 General requirements for dipping and coating operations. 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. Pulleys with cracks, or pieces broken out of rims, shall not be used. (ii) The PSDI mode shall not be used for die setting or set-up. 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. If a hearing is requested, it shall be held before an administrative law judge of the Department of Labor pursuant to the rules specified in 29 CFR part 1905, subpart C. c. The parties shall be OSHA and the recognized validation organization. (iv) Personal protective equipment (gloves, goggles, aprons, and other items) shall be worn. 1910.38 Emergency action plans. (B) The air supply for pneumatic clutch/brake control valves shall incorporate a filter, an air regulator, and, when necessary for proper operation, a lubricator. (53) Stripper means a mechanism or die part for removing the parts or material from the punch. 3. In the area of Safety Standards for Conveyors, CEMA defers and refers to the American Society of Mechanical Engineers, Association for Manufacturing Technology, and OSHA to develop broad industry safety standards where they can.. Read below for additional safety information: For all Conveyors the ASME B20 Committee for Conveyors and Related Equipment maintains the National Standard ANSI/ASME . Part 1910 Previous Next Top Enhanced Content The complete text of this part is too large to display all at once. (8) The practice of inserting wedges between the saw disk and the collar to form what is commonly known as a wobble saw shall not be permitted. The validation organization shall in its installation validation, state that in what circumstances, if any, the employer has advance approval for adjustment, when prior oral approval is appropriate and when prior approval must be in writing. Flanges shall be dimensionally accurate and in good balance. Instructions for use of the test rod shall be noted on a label affixed to the presence sensing device. They shall be continuous, the ends being either riveted, bolted, or welded together in such a manner as to leave the inside free from projections. (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. (11) Safety system certification/validation. (o) Profile and swing-head lathes and wood heel turning machine. Diamond and reinforced wheels are included. It would normally be preferable to limit the adjustment of the time required in paragraph (h)(6)(vi) to a maximum of 15 seconds. ), (4) Cylindrical grinders. (ii) Horizontal overhead belts more than seven (7) feet above floor or platform shall be guarded for their entire length under the following conditions: (a) If located over passageways or work places and traveling 1,800 feet or more per minute. (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. (4) Installation shall be in such a manner that the front end of the unit will be slightly higher than the rear, so as to cause the cutting head to return gently to the starting position when released by the operator. Conveyors are safe when used correctly, but they can be dangerous, and even deadly, if workers fail to follow safety procedures when working on or around them. Pulleys serving as balance wheels (e.g., punch presses) on which the point of contact between belt and pulley is more than six feet six inches (6 ft. 6 in.) 1910.253 Oxygen-fuel gas welding and cutting. (ii) All presses shall be installed in such a manner that they remain where they are positioned or they are anchored to foundations sufficient to support them according to applicable engineering standards. 1910.305 Wiring methods, components, and equipment for general use. (iii) A fixed barrier guard shall be attached securely to the frame of the press or to the bolster plate. The total system design shall be certified by the manufacturer as complying with all requirements in 29 CFR 1910.217 (a) through (h) and this appendix A. Eligibility. The provision of a spreader in connection with grooving, dadoing, or rabbeting is not required. (12) Safety guard means an enclosure designed to restrain the pieces of the grinding wheel and furnish all possible protection in the event that the wheel is broken in operation. Grade V60-30. (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). Visors or other accessory equipment shall not be included as a part of the guard when measuring the guard opening, unless such equipment has strength equal to that of the guard. http://www.osha.gov/pls/oshaweb/mechanical.html. (1) The cutting heads of each wood shaper, hand-fed panel raiser, or other similar machine not automatically fed, shall be enclosed with a cage or adjustable guard so designed as to keep the operator's hand away from the cutting edge. They shall be made of steel or other material with adequate strength and shall enclose the wheel sides upward from the back for one-third of the wheel thickness. (a) Attachments shall be connected to and operated only by the press slide or upper die. The safety requirements of this subparagraph apply to lead casts or other use of lead in the forge shop or die shop. (iv) The employer shall provide and enforce the use of safety blocks for use whenever dies are being adjusted or repaired in the press. (See paragraph (d)(5) of this section.). No changes found for this content after 1/03/2017. 1910.268 Telecommunications. (3) Mill means a machine consisting of two adjacent metal rolls, set horizontally, which revolve in opposite directions (i.e., toward each other as viewed from above) used for the mechanical working of rubber and plastics compounds. d. When the change of state is motion, the measurement shall be made at the completion of the motion. A copy of the certification/validation report shall be maintained on file at the validation organization and/or validating laboratory, and shall be available to the public upon request. Brake design parameters important to PSDI are high torque, low moment of inertia, low air volume (if pneumatic) mechanisms, non-interleaving engagement springs, and structural integrity which is enhanced by over-design. Clutches, cutoff couplings, or clutch pulleys having projecting parts, where such clutches are located seven (7) feet or less above the floor or working platform, shall be enclosed by a stationary guard constructed in accordance with this section. Hangers shall be inspected to make certain that all supporting bolts and screws are tight and that supports of hanger boxes are adjusted properly. 1910.1013 beta-Propiolactone. 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. Flywheels. 1910.272 Grain handling facilities. Such attachments shall be securely anchored and adjusted in such a way that the operator is restrained from reaching into the point of operation. 1910.1016 N-Nitrosodimethylamine. Steam hammers shall be provided with a quick closing emergency valve in the admission pipeline at a convenient location. Conduct or recertification/revalidation. (ii) Maximum hole size for cutting-off wheels should not be larger than 14-wheel diameter. a. 7. (3) Each disk sanding machine shall have the exhaust hood, or other guard if no exhaust system is required, so arranged as to enclose the revolving disk, except for that portion of the disk above the table, if a table is used, which may be necessary for the application of the material to be finished. 1910.163 Fixed extinguishing systems, water spray and foam. 1910.422 Procedures during dive. The validation organization shall demonstrate that: a. The manufacturer's recommended minimum lining depth shall be identified and documented, and an evaluation made that the minimum depth will not be exceeded before the next (annual) recertification/revalidation. b. Prior to use, both the employer and manufacturer must certify that these requirements and all the other applicable requirements of this section are met and these certifications must be validated by an OSHA-recognized third-party validation organization to meet these additional requirements and all the other applicable requirements of paragraphs (a) through (h) and appendix A of this section. The use of belt poles as substitutes for mechanical shifters is not recommended. (vi) The employer shall notify the OSHA-recognized third-party validation organization within five days of the occurrence of any point of operation injury while a press is used in the PSDI mode. It shall be ascertained that the springs have not been broken and that they are functioning properly. Couplings. Control elements shall be checked for correct status after power on and before the initial PSDI stroke. (ii) The following checks shall be made at the beginning of each shift and whenever a die change is made. Such flanges shall be at least one-fourth the wheel diameter. General. (3) Manually operated controls. (3) Bearings shall be kept free from lost motion and shall be well lubricated. 1. When mounting wheels which have not been cemented together, or ones which do not utilize separating spacers, care must be exercised to use wheels specially manufactured for that purpose. Please do not provide confidential (iii) Paragraph (e)(1)(ii) of this section does not apply to presses that comply with paragraphs (b)(13) and (14) of this section. 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. full text search results (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. All flanges shall be maintained in good condition. 1. (52) Stop control means an operator control designed to immediately deactivate the clutch control and activate the brake to stop slide motion. 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. (See Figures O-18, O-19, O-20, O-21, O-22, and O-23.). The label shall indicate the press serial number, the minimum safety distance (Ds) required by paragraph (h)(9)(v) of this section, the fulfillment of design certification/validation, the employer's signed certification, the identification of the OSHA-recognized third-party validation organization, its signed validation, and the date the certification/validation and recertification/revalidation are issued. (10) Counterbalance means the mechanism that is used to balance or support the weight of the connecting rods, slide, and slide attachments. 1910.401 Scope and application. (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. The unused run of the sanding belt shall be guarded against accidental contact. (1) Flywheels. If the press has a slide counterbalance system, it is important that the counterbalance be adjusted correctly for upper die weight according to the manufacturer's instructions. These records shall be available for inspection by OSHA and OSHA State Plan offices. (ii) Where suspended counterweights are used and not guarded by location, they shall be so encased as to prevent accident. The employer shall operate his presses within the tonnage and attachment weight ratings specified by the manufacturer. (6) Trimming presses mean a class of auxiliary forging equipment which removes flash or excess metal from a forging. Test results obtained from development testing may be used to certify/validate the design. (i) The employer shall establish a diesetting procedure that will insure compliance with paragraph (c) of this section. (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. (7) High-energy-rate forging machines mean a class of forging equipment wherein high ram velocities resulting from the sudden release of a compressed gas against a free piston impart impact to the workpiece. 1910.1044 1,2-dibromo-3-chloropropane. (iii) Cast steel, or structural steel, safety guards as specified in Figures O-36 and O-37 and Table O-9 shall be used where operating speeds of wheels are faster than 8,000 surface feet per minute up to a maximum of 16,000 surface feet per minute. 1910.309-1910.330 [Reserved], 1910.331 Scope. Failure to observe these rules might cause excessive flange pressure around the hole of the wheel. 1910.1030 Bloodborne pathogens. (See Figures O-16 and O-17. Peripheral grinding wheel having a diameter, thickness and hole. Gears shall be guarded in accordance with one of the following methods: Hand-operated gears. It would not be necessary to repeat the tests on individual safety systems of the same manufacture or design. (i) Limitation: Cutting off wheels are recommended only for use on specially designed and fully guarded machines and are subject to the following maximum thickness and hole size limitations. (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. (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. (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. (ix) Barriers shall be fixed to the press frame or bolster to prevent personnel from passing completely through the sensing field, where safety distance or press configuration is such that personnel could pass through the PSDI presence sensing field and assume a position where the point of operation could be accessed without detection by the PSDI presence sensing device. Where the drive extends over other machine or working areas, protection against falling shall be provided. (10) Bolt-headers mean the same as an upsetter or forging machine except that the diameter of stock fed into the machine is much smaller, i.e., commonly three-fourths inch or less. OSHA intends that PSDI continue to be prohibited where present state-of-the-art technology will not allow it to be done safely. 1910.243 Guarding of portable powered tools. The validating laboratory, if a separate organization from the validation organization, shall assign technical responsibility for the validation of PSDI certification to a Technical Director. OSHA 29 CFR 1910.147 outlines "Alternative Protection Measure" procedures that can result in increased efficiency without compromising the safety of the operation. 1910.424 SCUBA diving. 1. (3) Sprockets on chain or slat-belt conveyors shall be enclosed. If there is a counterweight, the bolts supporting the bar and counterweight shall be provided with cotter pins; and the counterweight shall be prevented from dropping by either a bolt passing through both the bar and counterweight, or a bolt put through the extreme end of the bar, or, where the counterweight does not encircle the bar, a safety chain attached to it. (1) Collars. A press consists of a stationary bed or anvil, and a slide (or slides) having a controlled reciprocating motion toward and away from the bed surface, the slide being guided in a definite path by the frame of the press. (2) Calenders. (58) Unitized tooling means a type of die in which the upper and lower members are incorporated into a selfcontained unit so arranged as to hold the die members in alignment. 1910.104 Oxygen. 2. Guarding vertical and inclined shafting. 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. 1910.402 Definitions. (1) Mills. (2) Redundancy, and comparison and/or diagnostic checking, exist for the critical items that may cause injury, and the electrical, electronic, electromechanical and mechanical parts and components are selected so that they can withstand operational and external environments. (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 provisions of paragraph (h) of this section shall apply to rivet making. Have unit wired by qualified electrician. It is the intent of paragraph (h)(7) that control components be provided with inherent design protection against operating stresses and environmental factors affecting safety and reliability. to 16,5 S.F.P.M.1. Final decision by Assistant Secretary - a. All points not readily accessible shall have oil feed tubes if lubricant is to be added while machinery is in motion. (3) Broken pulleys. (f) As used in 1910.219, unless the context clearly requires otherwise, the following mechanical power-transmission guarding terms shall have the meaning prescribed in this paragraph. b. 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. Bearings shall be kept in alignment and properly adjusted. (d) Cylinders, cups, or segmental wheels that are mounted in chucks. (3) Upon issuance of the decision, any party to the hearing may file exceptions within 20 days pursuant to subpart C. If exceptions are filed, the administrative law judge shall forward the decision, exceptions and record to the Assistant Secretary for the final decision on the application. (1) Each planing, molding, sticking, and matching machine shall have all cutting heads, and saws if used, covered by a metal guard. This content is from the eCFR and may include recent changes applied to the CFR. (iii) The employer shall provide die stops or other means to prevent losing control of the die while setting or removing dies in presses which are inclined.
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