Selection of PSDI mode and the number of interruptions/withdrawals of the light sensing field required to initiate a press cycle shall be by means capable of supervision by the employer. It is recommended that old installations be changed to conform to this rule. Table O-9 - Minimum Basic Thicknesses of Peripheral and Side Members for Safety Guards. (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. In no case shall a warning device of leather or other material attached to the spindle be acceptable. Appendix A to Subpart I of Part 1910References for Further Information (Non-mandatory) (6) Circular saw fences shall be so constructed that they can be firmly secured to the table or table assembly without changing their alignment with the saw. Where a mill is so installed that persons cannot normally reach through, over, under, or around to come in contact with the roll bite or be caught between a roll and an adjacent object, then, provided such elements are made a fixed part of a mill, safety control devices listed in paragraph (b) of this section shall not apply. OSHA Machine Guarding Standards - Machine Guard & Cover Co. Shaft couplings shall be so constructed as to present no hazard from bolts, nuts, setscrews, or revolving surfaces. (7) Circular saw gages shall be so constructed as to slide in grooves or tracks that are accurately machined, to insure exact alignment with the saw for all positions of the guide. (c) The control system shall incorporate an antirepeat feature. 1910.219 - Occupational Safety and Health Administration 1910.23 Ladders. The safety guard shall be mounted so as to maintain proper alignment with the wheel, and the strength of the fastenings shall exceed the strength of the guard, except: (i) Safety guards on all operations where the work provides a suitable measure of protection to the operator, may be so constructed that the spindle end, nut, and outer flange are exposed; and where the nature of the work is such as to entirely cover the side of the wheel, the side covers of the guard may be omitted; and. The stop control shall override any other control, and reactuation of the clutch shall require use of the operating (tripping) means which has been selected. (iii) Stamped to indicate complete die weight when handling equipment may become overloaded. (iv) single strand V-belts, the width of which is thirteen thirty-seconds (1332) inch or less. a. 2. a. If the increase in press stopping time exceeds the brake monitor setting limit defined in paragraph (h)(5)(iii), the test shall be considered unsuccessful, and the cause of the excessive stopping time shall be investigated. 1910.123 Dipping and coating operations: Coverage and definitions. Reactivation of the clutch shall require restoration of normal supply and the use of the tripping mechanism(s). The test specifications and procedures shall be made available upon request to the validation organization. Scrap cutters used in conjunction with scrap handling systems shall be safeguarded in accordance with paragraph (c) of this section and with 1910.219. (iii) Training personnel for the proper inspection and maintenance of forging machinery and equipment. 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. If belt is eight (8) inches or more in width. 1910.261 Pulp, paper, and paperboard mills. (i) Where both runs of horizontal belts are seven (7) feet or less from the floor level, the guard shall extend to at least fifteen (15) inches above the belt or to a standard height except that where both runs of a horizontal belt are 42 inches or less from the floor, the belt shall be fully enclosed in accordance with paragraphs (m) and (o) of this section. Adjustment of the location of the PSDI presence sensing device shall require use of a special tool available only to the authorized persons. (iv) Air piping shall conform to the specifications of the ANSI B31.1.0-1967, Power Piping with Addenda issued before April 28, 1971, which is incorporated by reference as specified in 1910.6. (b) The device may not be used as a tripping means to initiate slide motion, except when used in total conformance with paragraph (h) of this section. If made of pipe, the post shall be one and one-fourth (114) inches inside diameter, or larger. (E) A system or visual check shall be made to verify correct counterbalance adjustment for die weight according to the press manufacturer's instructions, when a press is equipped with a slide counterbalance system. A recognized validation organization may change a test method of the PSDI safety system certification/validation program by notifying the Assistant Secretary of the change, certifying that the revised method will be at least as effective as the prior method, and providing the supporting data upon which its conclusions are based. (i) Prior to the initial use of any mechanical press in the PSDI mode, two sets of certification and validation are required: (A) The design of the safety system required for the use of a press in the PSDI mode shall be certified and validated prior to installation. Usage experience should also include failure data supporting adequacy of the design. 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. 1910.1015 4-Dimethylaminoazobenzene. (x) Hand tools. If further detailing of these provisions will assist the validation organization or OSHA in this activity, this detailing will be done through appropriate OSHA Program Directives. (3) Bearings shall be kept free from lost motion and shall be well lubricated. (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. b. The driving point of all friction drives when exposed to contact shall be guarded, all arm or spoke friction drives and all web friction drives with holes in the web shall be entirely enclosed, and all projecting belts on friction drives where exposed to contact shall be guarded. (3) Bench and floor stands. 1. (i) A two-hand trip shall have the individual operator's hand controls protected against unintentional operation and have the individual operator's hand controls arranged by design and construction and/or separation to require the use of both hands to trip the press and use a control arrangement requiring concurrent operation of the individual operator's hand controls. 1910.18 Changes in established Federal standards. (B) Counterbalances shall be adjusted in accordance with the press manufacturer's recommendations to assure correct counterbalancing of the slide attachment (upper die) weight for all operations performed on presses used in the PSDI mode. 2 For wheels under 114 inch thick F dimension shall not exceed 40 percent of wheel thickness. 20), and the openings shall be not greater than three-eighths inch. (34) Fixed barrier guard means a die space barrier attached to the press frame. (4) Mill roll heights. Paragraph (f)(1) of this section does not apply to hand-operated gears used only to adjust machine parts and which do not continue to move after hand power is removed. 1910.111 Storage and handling of anhydrous ammonia. It shall be the responsibility of the employer to insure the original and continuing competence of personnel caring for, inspecting, and maintaining power presses. Table O-11 - Strength and Dimensions for Wood Ram Props. 6. This table shows the distances that guards shall be positioned from the danger line in accordance with the required openings. (See Figures O-18, O-19, O-20, O-21, O-22, and O-23.). (iv) If pedal counterweights are provided, the path of the travel of the weight shall be enclosed. Posts shall be not more than eight (8) feet apart; they are to be permanent and substantial, smooth, and free from protruding nails, bolts, and splinters. 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. (i) The control system on presses used in the PSDI mode shall meet the applicable requirements of paragraphs (b)(7), (b)(8), (b)(13), and (c)(5) of this section. (6) Types 27 and 28 depressed center wheels mean wheels having diameter, thickness, and hole size dimensions. (b) 12-inch diameter wheel, 1,000 revolutions per minute. Surface Feet per minute .262 12 1,000 = 3,144 s.f.p.m. Table O-2 - Exposure Versus Wheel Thickness, Table O-4 - Minimum Dimensions for Straight Unrelieved Flanges for Wheels with Threaded Inserts or Projecting Studs. (1) Inspection and maintenance records. (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. After hearing. 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. Page 1 of 4 | Conveyor Hazards Safety Factsheet: Hazards of Conveyors Conveyors are used to transport materials . 1910.19 Special provisions for air contaminants. The maximum angular exposure of the grinding wheel periphery and sides for safety guards used on grinders known as automatic snagging machines shall not exceed 180 and the top half of the wheel shall be enclosed at all times. The assumptions made during the analysis should be clearly stated and a description of the effects of these assumptions on the conclusions and limits should be included. (i) Straight relieved flanges made according to Table O-6 and Figure O-32 shall be recessed at least one-sixteenth inch on the side next to the wheel for a distance as specified in Table O-6. (v) Air counterbalance cylinders shall incorporate means to prevent failure of capability (sudden loss of pressure) in event of air supply failure. The minimum guarding line is the distance between the infeed side of the guard and the danger line which is one-half inch from the danger line. An OSHA catwalk serviced by a stairway is a type of stair landing. All Conveyors - Safety Section Refer to OSHA 1910.132 (Personal Prot. This trimming operation can also be done cold, as can coining, a product sizing operation. Equip.) (m) Standard guards - general requirements -. (63) Authorized person means one to whom the authority and responsibility to perform a specific assignment has been given by the employer. (iii) All mechanical power press controls shall incorporate a type of drive motor starter that will disconnect the drive motor from the power source in event of control voltage or power source failure, and require operation of the motor start button to restart the motor when voltage conditions are restored to normal. Where guard is exposed to contact with moving equipment, additional strength may be necessary. 1910.1010 Benzidine. Where the drive extends over other machine or working areas, protection against falling shall be provided. (2) Calenders. This web site is designed for the current versions of 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. (i) Each continuous line of shafting shall be secured in position against excessive endwise movement. (ii) Air-lift hammers shall have an air shutoff valve as required in paragraph (d)(2) of this section. The provisions of paragraph (h) of this section shall apply to rivet making. (i) Air-lift hammers shall have a safety cylinder head as required in paragraph (d)(1) of this section. With an enclosure of sheet, perforated, or expanded metal, or woven wire; With guard rails placed not less than fifteen (15) inches nor more than twenty (20) inches from rim. Reaction time means the time, in seconds, it takes the signal, required to activate/deactivate the system, to travel through the system, measured from the time of signal initiation to the time the function being measured is completed. (3) Broken pulleys. 5. Side grinding wheel having a wall flared or tapered outward from the back. 1910.211 Definitions. (See Figures O-10 and O-11 and subparagraph (9) of this paragraph. The midrail may be one by four (1 4) inches or more. (3) Belt perches. (5) Forging presses mean a class of forging equipment wherein the shaping of metal between dies is performed by mechanical or hydraulic pressure, and usually is accomplished with a single workstroke of the press for each die station. 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. You can learn more about the process a. An employer who assembles a PSDI safety system would be a manufacturer as well as employer for purposes of this standard and appendix. (1) Feed rolls and saws shall be protected by a hood or guard to prevent the hands of the operator from coming in contact with the in-running rolls at any point. Tail rods or extension piston rods shall be guarded in accordance with paragraphs (m) and (o) of this section, or by a guardrail on sides and end, with a clearance of not less than fifteen (15) nor more than twenty (20) inches when rod is fully extended. No changes found for this content after 1/03/2017. The Assistant Secretary, or a special designee for this purpose, will make a preliminary decision whether the applicant has met the requirements for recognition based on the completed application file and the written staff recommendation, as well as the statement of reasons by the applicant if there is a recommendation of disapproval. 1910.218 Forging machines. 1910.30 Training requirements. (iv) Overhead chain and link belt drives are governed by the same rules as overhead horizontal belts and shall be guarded in the same manner as belts. (ii) Be installed on a press such that it indicates when the performance of the braking system has deteriorated to the extent described in paragraph (b)(14)(i) of this section; and. Where the drive extends over other machine or working areas, protection against falling shall be provided. (d) Two hand trips shall be fixed in position so that only a supervisor or safety engineer is capable of relocating the controls. 1910.261 - Occupational Safety and Health Administration How someone is dressed loose clothing, long hair, and jewelry when working on or around conveyors can present the risk of conveyor entanglement. (b) Each two hand control shall meet the construction requirements of paragraph (b)(7)(v) of this section. 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. (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. The model is based on medical research into the forces needed to cause damage to . 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. 3. (49) Single stroke means one complete stroke of the slide, usually initiated from a full open (or up) position, followed by closing (or down), and then a return to the full open position. They may be steel centered, diamond abrasive or organic bonded abrasive of the plain or reinforced type. Each time the operational conditions are significantly changed (including environmental, application or facility changes, but excluding such changes as die changes or press relocations not involving revision to the safety system); c. When a failure of a significant component has occurred or a change has been made which may affect safety; or. (1) Inspection. (1) Veneer slicer knives shall be guarded to prevent accidental contact with knife edge, at both front and rear. (See Figures O-14 and O-15. The stroking selector generally includes positions for Off (Clutch Control), Inch, Single Stroke, and Continuous (when Continuous is furnished). (e) Inspection, maintenance, and modification of presses -. (a) The device may not be used on machines using full revolution clutches. Subscribe to: Changes in Title 29 :: Subtitle B :: Chapter XVII :: Part 1910 :: Subpart O. 3. Die keys and shims shall be made from a grade of material that will not unduly crack or splinter. Analysis. The recognition of each validation organization will be valid for five years, unless terminated before or renewed after the expiration of the period. (iv) All overhead parts shall be fastened or protected in such a manner that they will not fly off or fall in event of failure. Appendix C to Subpart T of Part 1910Alternative Conditions Under 1910.401(a)(3) for Recreational Diving Instructors and Diving Guides (Mandatory). PART 1910 - OCCUPATIONAL SAFETY AND HEALTH STANDARDS Source: 39 FR 23502, June 27, 1974, unless otherwise noted. (2) The report shall include the following information: (i) Employer's name, address and location of the workplace (establishment). (2) Veneer clippers shall have automatic feed or shall be provided with a guard which will make it impossible to place a finger or fingers under the knife while feeding or removing the stock. (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. A validation organization may be considered independent even if it has ties with manufacturers, employers or employee representatives if these ties are with at least two of these three groups; it has a board of directors (or equivalent leadership responsible for the certification/validation activities) which includes representatives of the three groups; and it has a binding commitment of funding for a period of three years or more. (15) Pull-out device means a mechanism attached to the operator's hands and connected to the upper die or slide of the press, that is designed, when properly adjusted, to withdraw the operator's hands as the dies close, if the operator's hands are inadvertently within the point of operation. 1910.159 Automatic sprinkler systems. Such mesh or perforated metal shall be not less than 0.037 inch (U.S. Gage No. (o) Profile and swing-head lathes and wood heel turning machine. (vii) The two hand control device shall protect the operator as specified in paragraph (c)(3)(i)(e) of this section. The validation organization shall demonstrate competence and experience in either power press design, manufacture or use, or testing, quality control or certification/validation of equipment comparable to power presses and associated control systems. 2. 3. In addition, General Industry applications must adhere to OSHA regulations for Ladder Safety 1910.23 (if applicable) and Walking-Working Surfaces 1910.28. Organization and Purpose Safety guards of the types described in subparagraphs (3) and (4) of this paragraph, where the operator stands in front of the opening, shall be constructed so that the peripheral protecting member can be adjusted to the constantly decreasing diameter of the wheel. Specifications Met: ANSI Z359.14, OSHA 1910.66, OSHA 1926.502 ; 3M Protecta Fall Protection AD120BC Rebel Self-Retracting Lifeline With Swivel Hook, 310 lb Load . Such attachments shall be securely anchored and adjusted in such a way that the operator is restrained from reaching into the point of operation. 8. 1910.214 Cooperage machinery. Couplings. (19) Die builder means any person who builds dies for power presses. 3. All pressure vessels used in conjunction with power presses shall conform to the American Society of Mechanical Engineers Code for Pressure Vessels, 1968 Edition, which is incorporated by reference as specified in 1910.6. Displaying title 29, up to date as of 3/02/2023. Conveyor Safety When used incorrectly, they can be dangerous. 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. 1910.166-1910.168 [Reserved] 1910.309-1910.330 [Reserved], 1910.331 Scope. Employees are required to cover and protect long hair to prevent it from getting caught in machine parts such as belts, chain and rotating parts. (b) Portable wheels with threaded inserts or projecting studs. 1910.37 Maintenance, safeguards, and operational features for exit routes. 1910.169 Air receivers. (9) Repairs and maintenance. 1910.425 Surface-supplied air diving. A test report shall be prepared for each PSDI safety system that is tested. 5. This content is from the eCFR and is authoritative but unofficial. The validation organization and the validating laboratory shall be adequately staffed by personnel who are qualified by technical training and/or experience to conduct the validation of the certification of PSDI safety systems. (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.