(b) Abrasive discs (inserted nut, inserted washer, and projecting stud type). (12) Pressure vessels. 1910.306 Specific purpose equipment and installations. 1. e. The generation of the test signal introduced into the system for measuring reaction time shall be such that the initiation time can be established with an error of less than 0.5 percent of the reaction time measured. (c) The device shall be constructed so that a failure within the system does not prevent the normal stopping action from being applied to the press when required, but does prevent the initiation of a successive stroke until the failure is corrected. In all other industries, wood guards shall not be used. Gears shall be guarded in accordance with one of the following methods: Hand-operated gears. Abrasive wheels shall be used only on machines provided with safety guards as defined in the following paragraphs of this section, except: (i) Wheels used for internal work while within the work being ground; (ii) Mounted wheels, used in portable operations, 2 inches and smaller in diameter; and. (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. 653, 655, 657; Secretary of Labor's Order No. 3. (28) Semiautomatic feeding means feeding wherein the material or part being processed is placed within or removed from the point of operation by an auxiliary means controlled by operator on each stroke of the press. Preliminary approval. 1910.12 Construction work. 1910.16 Longshoring and marine terminals. 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. (xiii) The clutch/brake control shall automatically deactivate in event of failure of the power or pressure supply for the clutch engaging means. (ii) Where explosives, explosive dusts, flammable vapors or flammable liquids exist, the hazard of static sparks from shafting shall be carefully considered. ), (7) Automatic snagging machines. (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). Sections 1910.217 and 1910.219 also issued under 5 U.S.C. (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. - Occupational Safety and Health Administration, Department of Labor, - Occupational Safety and Health Standards, 1910.214 Cooperage machinery. (7) Machines using part revolution clutches. of this appendix, above, except that a reinspection is not required but may be performed by OSHA. (b) Portable wheels with threaded inserts or projecting studs. If a stairway accesses the catwalk, the width requirements depend on the width of the stairway that serves it. All Conveyors - Safety Section Refer to OSHA 1910.132 (Personal Prot. (1) Hot trimming presses. (i) Guardrail shall be forty-two (42) inches in height, with midrail between top rail and floor. (21) Die setter means an individual who places or removes dies in or from mechanical power presses, and who, as a part of his duties, makes the necessary adjustments to cause the tooling to function properly and safely. (10) It is recommended that each power-driven woodworking machine be provided with a disconnect switch that can be locked in the off position. The manufacturer shall certify and the OSHA-recognized third-party validation organization shall validate that: (a) The design of components, subsystems, software and assemblies meets OSHA performance requirements and are ready for the intended use; and. A summary of part level content is listed below followed by the table of contents, where you can drill down further. See Table O-10. It shall be the responsibility of any person modifying a power press to furnish instructions with the modification to establish new or changed guidelines for use and care of the power press so modified. (i) Each continuous line of shafting shall be secured in position against excessive endwise movement. (vii) Material handling equipment shall be of adequate strength, size, and dimension to handle diesetting operations safely. (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. The identified parts, components and subsystems shall be certified by the manufacturer to be able to withstand the functional and operational environments of the PSDI safety system. 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. (1) Dull, badly set, improperly filed, or improperly tensioned saws shall be immediately removed from service, before they begin to cause the material to stick, jam, or kick back when it is fed to the saw at normal speed. (5) Universal joints on spindles of boring machines shall be completely enclosed in such a way as to prevent accidental contact by the operator. Guardrail shall be forty-two (42) inches in height, with midrail between top rail and floor. 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. Subpart O - Machinery and Machine Guarding. 1910.420 Safe practices manual. This shall include the use of the test rod required by paragraph (h)(10)(i) of this section. Expanded metal, sheet or perforated metal, and wire mesh shall be securely fastened to frame. For saws with tilting tables or tilting arbors the fence shall be so constructed that it will remain in a line parallel with the saw, regardless of the angle of the saw with the table. (ii) Table O-5, and Table O-7 and Figures O-31, O-33, O-34 show minimum dimensions for straight adaptor flanges for use with wheels having holes larger than the spindle. (5) Blotters. The Federal Register notice of preliminary decision will provide a period of not less than 60 calendar days for the written comments on the applicant's fulfillment of the requirements for recognition. (2) Hand-operated gears. March 1, 2022 | Occupational Safety and Health Administration 1910.251 Definitions. (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. a. 1910.1008 bis-Chloromethyl ether. If the validation organization has been recognized for more than one year, meets the requirements for expansion of recognition, and there is no evidence that the recognized validation organization has not been following the requirements of this appendix and the letter of recognition, an expansion will normally be granted. (A) The manufacturer's recommended test procedures for checking operation of the presence sensing device. (10) Sheaves mean grooved pulleys, and shall be so classified unless used as flywheels. here. (1) General requirements. Final decision by Assistant Secretary - a. 1910.254 Arc welding and cutting. (ii) Where suspended counterweights are used and not guarded by location, they shall be so encased as to prevent accident. (ii) An automatic guard which will remove the hands of the operator from the danger zone at every descent of the blade, used in conjunction with one-hand starting devices which require two distinct movements of the device to start the cutting motion, and so designed as to return positively to the nonstarting position after each complete cycle of the knife. (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. In all other industries, wood guards shall not be used. full text search results 1910.112-1910.113 [Reserved] 1910.119 Process safety management of highly hazardous chemicals. b. The manufacturer's recommended procedures for maintenance and inspection should be closely followed. 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. Other material, designs or dimensions affording equal or superior protection are also acceptable. (e) Cylinders, cup, or segmental wheels that are mounted in chucks. (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. 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.) 1910.25 Stairways. (B) Alternatives to photo-electric light curtains may be used for PSDI when the employer can demonstrate, through tests and analysis by the employer or the manufacturer, that the alternative is as safe as the photo-electric light curtain, that the alternative meets the conditions of this section, has the same long term reliability as light curtains and can be integrated into the entire safety system as provided for in this section. (4) Power controls and operating controls should be located within easy reach of the operator while he is at his regular work location, making it unnecessary for him to reach over the cutter to make adjustments. For hole sizes smaller than shown in this table, use table 12. (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. Grinding machines shall be equipped with flanges in accordance with paragraph (c) of this section. (i) Cutting-off wheels, Types 1 and 27A (see paragraphs (c)(1) (ii) and (iii) of this section). C. Analyses may be used for certification/validation when existing data are available or when test is not feasible. (1) Hazards to personnel associated with broken or falling machine components. (v) Two-hand controls for single stroke shall conform to the following requirements: (a) Each hand control shall be protected against unintended operation and arranged by design, construction, and/or separation so that the concurrent use of both hands is required to trip the press. After hearing. Belt perches. (g) Swing cutoff saws. Grade 32510. 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. (14) Holdout or restraint device means a mechanism, including attachments for operator's hands, that when anchored and adjusted prevent the operator's hands from entering the point of operation. (x) Foot operated tripping controls, if used, shall be protected so as to prevent operation from falling or moving objects, or from unintended operation by accidental stepping onto the foot control. (ii) The relevant requirements of paragraphs (a) through (g) of this section also shall apply to all presses used in the PSDI mode of operation, whether or not cross referenced in this paragraph (h). (8) Concurrent means acting in conjunction, and is used to describe a situation wherein two or more controls exist in an operated condition at the same time. (n) Planing, molding, sticking, and matching machines. This should enhance the reliability of the device and ensure that it remains operable. (1) Point of operations means that point at which cutting, shaping, boring, or forming is accomplished upon the stock. [39 FR 23502, June 27, 1974, as amended at 39 FR 41846, Dec. 3, 1974; 40 FR 3982, Jan. 27, 1975; 43 FR 49750, Oct. 24, 1978; 45 FR 8594, Feb. 8, 1980; 49 FR 18295, Apr. (1) General requirements. Where a calender 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 calender, safety control devices listed in paragraph (c) of this section shall not apply. tensile strength 20,000 p.s.i.) The test(s) shall document the range of object diameter sizes which will produce both single and double break conditions. The major parts, components and subsystems used shall be defined by part number or serial number, as appropriate, and by manufacturer to establish the configuration of the system. General. When more than one wheel is mounted between a single set of flanges, wheels may be cemented together or separated by specially designed spacers. 1910.255 Resistance welding. (1) Each circular resaw shall be guarded by a hood or shield of metal above the saw. 1910.6 Incorporation by reference. It shall automatically adjust itself to the thickness of and remain in contact with the material being cut. Certain exceptions are forging hammers made with frame mounted on the anvil; e.g., the smaller, single-frame hammers are usually made with the anvil and frame in one piece. 1910.215 Abrasive wheel machinery. Occupational Safety and Health Administration, Outreach Training Program (10- and 30-hour Cards), OSHA Training Institute Education Centers, Severe Storm and Flood Recovery Assistance. (27) Automatic feeding means feeding wherein the material or part being processed is placed within or removed from the point of operation by a method or means not requiring action by an operator on each stroke of the press. Integrated Tests Certification/Validation. If such a guard is constructed of sheet metal, the material used shall be not less than one-sixteenth inch in thickness; and if cast iron is used, it shall not be less than three-sixteenths inch in thickness. 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. Use of a brake monitor does not eliminate the need for periodic brake inspection and maintenance to reduce the possibility of catastrophic failures. 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. 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. (l) Belt shifters, clutches, shippers, poles, perches, and fasteners -. They shall be of rigid construction and designed to be adjustable to compensate for wheel wear. (j) Bearings and facilities for oiling. (1) Types of guarding. (This may be through reference to published sources which describe the test methods or procedures used.). The term manufacturers refers to the manufacturer of any of the components of the safety system. Immediately before mounting, all wheels shall be closely inspected and sounded by the user (ring test) to make sure they have not been damaged in transit, storage, or otherwise. It is recommended that old installations be changed to conform to this rule. (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 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. All upsetters shall be installed so that they remain on their supporting foundations. 1910.67 Vehicle-mounted elevating and rotating work platforms. If there are no valid requests for a hearing, based on the application, supporting documents, staff recommendation, evidence and public comment, the Assistant Secretary shall issue the final decision (including reasons) of the Department of Labor on whether the applicant has demonstrated by a preponderance of the evidence that it meets the requirements for recognition. 1 Flanges shall be of steel, quality SAE 1040 or equivalent, annealed plate, heat treated to R. 25-30. (vii) Means used to actuate press stroke (foot trip, foot control, hand trip, hand control, or other). a. (vi) Wherever flywheels are above working areas, guards shall be installed having sufficient strength to hold the weight of the flywheel in the event of a shaft or wheel mounting failure. All exposed parts of horizontal shafting seven (7) feet or less from floor or working platform, excepting runways used exclusively for oiling, or running adjustments, shall be protected by a stationary casing enclosing shafting completely or by a trough enclosing sides and top or sides and bottom of shafting as location requires. (8) Die handling. The adaptor nut which is less than the minimum one-third diameter of wheel fits in the depressed side of wheel to prevent interference in side grinding and serves to drive the wheel by its clamping force against the depressed portion of the back flange. Only part revolution type mechanical power presses are approved for PSDI. 1910.106 Flammable liquids. 1. b. The Type 27 A Wheel is mounted between flat non-relieved flanges of equal bearing surfaces. guide. 1910.8 OMB control numbers under the Paperwork Reduction Act. 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. (12) For all circular saws where conditions are such that there is a possibility of contact with the portion of the saw either beneath or behind the table, that portion of the saw shall be covered with an exhaust hood, or, if no exhaust system is required, with a guard that shall be so arranged as to prevent accidental contact with the saw. e. The applicant may include whatever enclosures, attachments, or exhibits the applicant deems appropriate. 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. Where more than one interruption of the light sensing field is used in the initiation of a stroke, either the mode selection means must have one position for each function, or a separate selection means shall be provided which becomes operable when the PSDI mode is selected. (x) All components and subsystems of the control system shall be designed to operate together to provide total control system compliance with the requirements of this section. Air controlling equipment shall be protected against foreign material and water entering the pneumatic system of the press. Brake capacity shall be sufficient to stop the motion of the slide quickly and capable of holding the slide and its attachments at any point in its travel. Hand feeding tools are not a point of operation guard or protection device and shall not be used in lieu of the guards or devices required in this section. Content of application. There are other general safety precautions which should be followed by everyone even if they dont work directly with conveyors. 1910.1043 Cotton dust. 8. Surface Feet Per Minute = 3.1416 diameter in inches r.p.m. Test results obtained from development testing may be used to certify/validate the design. 7. (ii) A gate or movable barrier device shall protect the operator as follows: (a) A Type A gate or movable barrier device shall protect the operator in the manner specified in paragraph (c)(3)(i)(f) of this section, and. 1910.269 Electric power generation, transmission, and distribution. All auxiliary equipment such as mill divider, support bars, spray pipes, feed conveyors, strip knives, etc., shall be located in such a manner as to avoid interference with access to and operation of safety devices. The third-party validation organization shall have legal authority to perform certification/validation activities. If the conveyor runs at head height or carries material hung from hooks, workers in the area should remain alert to possible danger and measures should be taken to prevent workers from being accidentally struck by moving material. Certification/Validation Program Requirements. (36) Adjustable barrier guard means a barrier requiring adjustment for each job or die setup. (viii) The two hand trip device shall protect the operator as specified in paragraph (c)(3)(i)(e) of this section. 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. (3) Auxiliary equipment. Appendix C to Subpart T of Part 1910Alternative Conditions Under 1910.401(a)(3) for Recreational Diving Instructors and Diving Guides (Mandatory). (1) Keys. The validation organization shall make available upon request a list of PSDI safety systems which have been certified/validated by the program. (i) All hammers shall be positioned or installed in such a manner that they remain on or are anchored to foundations sufficient to support them according to applicable engineering standards. [Reserved] The upper rail shall be two by four (2 4) inches, or two one by four (1 4) strips, one at the top and one at the side of posts. 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 . The official, published CFR, is updated annually and available below under Flywheels located so that any part is seven (7) feet or less above floor or platform shall be guarded in accordance with the requirements of this subparagraph: Cranks and connecting rods. (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. Enhanced content is provided to the user to provide additional context. Compliance with 1910.217(h)(7). The guard shall be constructed of heavy material, preferably metal, and the edge of the guard shall come to within three-eighths inch of the plane formed by the inside face of the feed roll in contact with the stock being cut. This contact form is only for website help or website suggestions. (h) Presence sensing device initiation (PSDI) -. information or personal data. Fixing of selection shall be by means capable of supervision by the employer. The stopping time measurements should be made with the heaviest upper die that is planned for use in the press. This appendix prescribes mandatory requirements and procedures for OSHA recognition of third-party validation organizations to validate employer and manufacturer certifications that their equipment and practices meet the requirements of the PSDI standard. (2) Cranks and connecting rods. Bolts, nuts, and setscrews will, however, be permitted where they are covered with safety sleeves or where they are used parallel with the shafting and are countersunk or else do not extend beyond the flange of the coupling. Tail rods or extension piston rods. switch to drafting.ecfr.gov. The requirement in paragrpah (h)(2)(iii) reduces the possibility of significantly increased stopping time if a spring breaks. (iv) Light curtains used for PSDI operation shall have minimum object sensitivity not to exceed one and one-fourth inches (31.75 mm). (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. (See Figures O-6 and O-7 and paragraph (b)(9) of this section. Conveyor Safety | OSHA Safety Manuals Where suspended counterweights are used and not guarded by location, they shall be so encased as to prevent accident. Wall thickness at the back is normally greater than at the grinding face (W). A U type guard is permissible. 1910.11 Scope and purpose. 4. (2) Guard exposure angles. Choosing an item from (66) Certification/validation and certify/validate means the combined process of certification and validation. 553. of this appendix, the following procedures will be used: (1) The Assistant Secretary will issue a notice of hearing before an administrative law judge of the Department of Labor pursuant to the rules specified in 29 CFR part 1905, subpart C. (2) After the hearing, pursuant to subpart C, the administrative law judge shall issue a decision (including reasons) based on the application, the supporting documentation, the staff recommendation, the public comments and the evidence submitted during the hearing (the record), stating whether it has been demonstrated, based on a preponderance of evidence, that the applicant meets the requirements for recognition. (C) Maintain a certification record of each maintenance task performed under the directed component of the inspection program that includes the date of the maintenance task, the signature of the person who performed the maintenance task, and the serial number, or other identifier, of the power press maintained. Tests which are conducted by the manufacturers of electrical components to establish stress, life, temperature and loading limits must be tests which are in compliance with the provisions of the National Electrical Code. (v) The safety distance (Ds) from the sensing field of the presence sensing device to the point of operation shall be greater than or equal to the distance determined by the formula: Hs = Hand speed constant of 63 inches per second (1.6 m/s). An application may be withdrawn by an applicant, without prejudice, at any time prior to the final decision by the Assistant Secretary in paragraph I.B.8.b. (12) Guard design specifications. 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. Diamond and reinforced wheels are included. (2) Push stick means a narrow strip of wood or other soft material with a notch cut into one end and which is used to push short pieces of material through saws. When flywheel extends into pit or is within 12 inches of floor, a standard toeboard shall also be provided; When the upper rim of flywheel protrudes through a working floor, it shall be entirely enclosed or surrounded by a guardrail and toeboard. 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. The Office of the Federal Register publishes documents on behalf of Federal agencies but does not have any authority over their programs. 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. Consistency of braking action is enhanced by high brake torque. 1. If it so determines, it shall revalidate the employer's recertification that the PSDI system is in full conformance with all requirements of 29 CFR 1910.217(a) through (h) and this appendix A. (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. (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. Without hearing. (ii) The employer shall certify that employees have been trained by preparing a certification record which includes the identity of the person trained, the signature of the employer or the person who conducted the training, and the date the training was completed.
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