1910.159 Automatic sprinkler systems. (iii) A label shall be affixed to the press as part of each installation certification/validation and the most recent recertification/revalidation. Antirepeat requires release of all tripping mechanisms before another stroke can be initiated.
eCFR :: 29 CFR Part 1910 Subpart O -- Machinery and Machine Guarding Sec. 1910.1016 N-Nitrosodimethylamine. Similarity analysis should not be accepted when the internal and external stresses on the item being certified/validated are not defined. c. Its employees are secure from discharge resulting from pressures from manufacturers, suppliers, vendors, employers or employee representatives. Cranks and connecting rods, when exposed to contact, shall be guarded in accordance with paragraphs (m) and (n) of this section, or by a guardrail as described in paragraph (o)(5) of this section. 1910.424 SCUBA diving. The adjustments shall be made before performing the stopping time measurements required by paragraphs (h)(2)(ii), (h)(5)(iii), and (h)(9)(v) of this section. (1) Gears. OSHA intends that PSDI continue to be prohibited where present state-of-the-art technology will not allow it to be done safely. Collars. (ii) The control system shall incorporate a means of dynamically monitoring for decoupling of the rotary position indicating mechanism drive from the crankshaft. 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. Equip.)
Machine Safety Standards | UL Solutions 1910.162 Fixed extinguishing systems, gaseous agent. 1910.164 Fire detection systems. (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. (5) Saw frames or tables shall be constructed with lugs cast on the frame or with an equivalent means to limit the size of the saw blade that can be mounted, so as to avoid overspeed caused by mounting a saw larger than intended. (10) Material requirements and minimum dimensions. It is recommended, however, that no projecting setscrews or oilcups be used in any revolving pulley or part of machinery. 10. 1910.24 Step bolts and manhole steps. 1910.1000 Air contaminants. (iii) Air counterbalance cylinders shall incorporate means to retain the piston and rod in case of breakage or loosening. (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. (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. (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. b. This subparagraph does not apply to keys or setscrews within gear or sprocket casings or other enclosures, nor to keys, setscrews, or oilcups in hubs of pulleys less than twenty (20) inches in diameter where they are within the plane of the rim of the pulley. (a)(1) OSHA Basics: OSHA's Special Industry Standards in Subpart R 1910.101 Compressed gases (general requirements). However,current OSHA regulations on the control of hazardous energy sources (lockout/tagout)[29 CFR 1910.147],and machine guarding [29 CFR Part 1910.212 ] are applicable to these types of equipment. 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. (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. (1) Collars. b. The employer shall evaluate and test the PSDI safety system installation, shall submit to the OSHA-recognized third-party validation organization the necessary supporting documentation, and shall recertify that the requirements of 1910.217(a) through (h) and this appendix are being met. (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. 1910.104 Oxygen. 653, 655, 657; Secretary of Labor's Order No. 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 . (3) On applications where injury to the operator might result if motors were to restart after power failures, provision shall be made to prevent machines from automatically restarting upon restoration of power. If a stairway accesses the catwalk, the width requirements depend on the width of the stairway that serves it. Preliminary disapproval. (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. 1910.126 Additional requirements for special dipping and coating operations. Grinding wheels shall fit freely on the spindle and remain free under all grinding conditions. Table O-7 - Minimum Dimensions for Straight Flanges - for Mechanical Grinders 12,500 S.F.P.M. The failure of a critical component shall necessitate the removal of the safety system from service until it is recertified and revalidated, except recertification by the employer without revalidation is permitted when a non-critical component or subsystem is replaced by one of the same manufacture and design as the original, or determined by the third-party validation organization to be equivalent by similarity analysis, as set forth in appendix A. a. Conveyor systems shall be equipped with an audible warning signal to be sounded immediately before starting up the conveyor. (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. a. Pulleys with cracks, or pieces broken out of rims, shall not be used. (ii) Shafting under bench machines shall be enclosed by a stationary casing, or by a trough at sides and top or sides and bottom, as location requires. 1910.427 Liveboating. 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. (1) Cup wheels. (ii) 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. Based upon this determination, a scale shall be developed to indicate the allowable 10 percent of the stopping time at the top of the stroke for slide or ram overtravel due to brake wear. (iii) A fixed barrier guard shall be attached securely to the frame of the press or to the bolster plate. (4) of this appendix. (i) Air valve and air pressure supply/control. 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. (4) Guide post hazard. (13) Whenever veneer slicers or rotary veneer-cutting machines have been shutdown for the purpose of inserting logs or to make adjustments, operators shall make sure that machine is clear and other workmen are not in a hazardous position before starting the machine. If the deficiencies are not corrected, OSHA may revoke recognition, effective in 60 days, unless the validation organization requests a hearing within that time. ), concerning certification or validation. 1910.146 Permit-required confined spaces. 1910.264 Laundry machinery and operations. Mills and calenders in the rubber and plastics industries. All sprocket wheels and chains shall be enclosed unless they are more than seven (7) feet above the floor or platform. (1) Antirepeat means the part of the clutch/brake control system designed to limit the press to a single stroke if the tripping means is held operated. (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. This checklist covers regulations issued by the U.S. Department of Labor, Occupational Safety and Health Administration (OSHA) under the general industry standard 29 CFR 1910.23. (See Figures O-18, O-19, O-20, O-21, O-22, and O-23.). 1. 1910.1005 [Reserved] A means of air lubrication shall be provided when needed. Have unit wired by qualified electrician. It shall be of sufficient width to provide adequate stiffness or rigidity to resist any reasonable side thrust or blow tending to bend or throw it out of position. (ii) The inside diameter of the band shall not be more than 1 inch larger than the outside diameter of the wheel, and shall be mounted as nearly concentric with the wheel as practicable. 1910.332 Training. The provisions of paragraph (h) of this section shall apply to rivet making. Press brakes, hydraulic and pneumatic power presses, bulldozers, hot bending and hot metal presses, forging presses and hammers, riveting machines and similar types of fastener applicators are excluded from the requirements of this section. Where belts are so located as to make it impracticable to carry the guard to wall or ceiling, construction of guard shall be such as to enclose completely the top and bottom runs of belt and the face of pulleys. (5) Ripping and ploughing shall be against the direction in which the saw turns. A positive-type lockout device for disconnecting the power to the shear shall be provided. 1910.1030 Bloodborne pathogens. (v) The PSDI mode of operation shall be used only for normal production operations. Employees are also encouraged to pay close attention to work pieces that have slots or other surface profiles that may increase the risk of entanglement. (14) Brake system monitoring. (3) Installation/Certification/Validation and Annual Recertification/Revalidation. This is known as the Ring Test. Where panels are fitted with expanded metal or wire mesh the middle rails may be omitted. (2) Cranks and connecting rods. The clutch/brake control system shall be designed and constructed to prevent actuation of the clutch if all operating stations are bypassed. (6) Multiple wheel mounting. 1910.144 Safety color code for marking physical hazards. If made of wood, the posts shall be two by four (2 4) inches or larger. The requirement in paragrpah (h)(2)(iii) reduces the possibility of significantly increased stopping time if a spring breaks. Openings for oiling. If the conveyor runs overhead, precautions must be taken to prevent injuries from materials that may fall from above. The guard shall have openings no larger than one-half (12) inch. Hand feeding tools are intended for placing and removing materials in and from the press. 1. Demonstrations that such adjustments as may be needed (such as to the brake monitor setting) have been accomplished with proper changes made in the records and on such notices as are located on the press and safety system. (20) Die set means a tool holder held in alignment by guide posts and bushings and consisting of a lower shoe, an upper shoe or punch holder, and guide posts and bushings. 1910.218 Forging machines. Mechanical and electrical equipment and auxiliaries shall be installed in accordance with this section and subpart S of this part. Maximum hole size for all other applications should not exceed one-half wheel diameter. (iii) Toeboards shall be four (4) inches or more in height, of wood, metal, or of metal grill not exceeding one (1) inch mesh. The official, published CFR, is updated annually and available below under 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. (3) Bolster plate means the plate attached to the top of the bed of the press having drilled holes or T-slots for attaching the lower die or die shoe. 1910.103 Hydrogen. (viii) A scale guard of substantial construction shall be provided at the back of every hammer, so arranged as to stop flying scale. The validation organization and validating laboratory shall have adequate administrative and technical staffs to conduct the validation of the certification of PSDI safety systems. 1910.1053 Respirable crystalline silica. Grinding is performed on the rim face only, dimension W. Cylinder wheels may be plain, plate mounted, inserted nut, or of the projecting stud type. An upper and a lower die make a complete set. Limitation: Hole dimension (H) should not be greater than two-thirds of wheel diameter dimension (D) for precision, cylindrical, centerless, or surface grinding applications. Flywheels. (2) Each self-feed circular ripsaw shall be provided with sectional non-kickback fingers for the full width of the feed rolls. Click on the image to download the training you need, and they will be automatically downloaded. A sound and undamaged wheel will give a clear metallic tone. OSHA regulates conveyors specifically in its construction rule at 29 CFR 1926.555, and the general use of such equipment is regulated under general industry and contruction rules for lockout/tagout, machine guarding, signs, signals, and barricades, and under the General Duty Clause. (i) Blotters (compressible washers) shall always be used between flanges and abrasive wheel surfaces to insure uniform distribution of flange pressure. (2) Modification. This diagram shows the accepted safe openings between the bottom edge of a guard and feed table at various distances from the danger line (point of operation). 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. (3) Shoe last and spoke lathes, doweling machines, wood heel turning machines, and other automatic wood-turning lathes of the rotating knife type shall be equipped with hoods enclosing the cutter blades completely except at the contact points while the stock is being cut. Open frame hammers generally are so constructed that the anvil assembly is separate from the operating mechanism and machine supports; it rests on its own independent foundation. (A) A check shall be performed using the test rod according to the presence sensing device manufacturer's instructions to determine that the presence sensing device used for PSDI is operational. 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. The cleaning chamber shall have doors or guards to protect operators. (35) Interlocked press barrier guard means a barrier attached to the press frame and interlocked so that the press stroke cannot be started normally unless the guard itself, or its hinged or movable sections, enclose the point of operation. (7) All cracked saws shall be removed from service. 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. (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. Showing movable guard with size of opening correct for full size wheel but too large for smaller wheels. Enhanced content is provided to the user to provide additional context.
Conveyors training, regulations, analysis, news, and tools - BLR (6) Trimming presses mean a class of auxiliary forging equipment which removes flash or excess metal from a forging. (xiv) The clutch/brake control shall automatically deactivate in event of failure of the counterbalance(s) air supply. (2) Brake means the mechanism used on a mechanical power press to stop and/or hold the crankshaft, either directly or through a gear train, when the clutch is disengaged. When more than one wheel is mounted between a single set of flanges, wheels may be cemented together or separated by specially designed spacers. (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. (3) An adjustable stop shall be provided to prevent the forward travel of the blade beyond the position necessary to complete the cut in repetitive operations. Examples of guarding methods are - barrier guards, two-hand tripping devices, electronic safety devices, etc. 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. (6) Types 27 and 28 depressed center wheels mean wheels having diameter, thickness, and hole size dimensions. This table shows the distances that guards shall be positioned from the danger line in accordance with the required openings. The current OSHA standard for safe distance as a function of opening size is set forth in Table O-10 of OSHA 29 CFR 1910.217 - Mechanical Power Presses. Brakes which are the adjustable type shall be adjusted properly before the test. Tail rods or extension piston rods. (i) Point of operation is the area on a machine where work is actually performed upon the material being processed. This shall include the use of the test rod required by paragraph (h)(10)(i) of this section. 1910.179 Overhead and gantry cranes. (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). This subparagraph does not apply to manually operated sprockets. Subscribe to: Changes in Title 29 :: Subtitle B :: Chapter XVII :: Part 1910 :: Subpart O. 1910.213 Woodworking machinery requirements. (iv) For cutting-off wheels 16 inches diameter and smaller and where speed does not exceed 16,000 surface feet per minute, cast iron or malleable iron safety guards as specified in Figures O-36 and O-37, and in Table O-9 shall be used. The certification/validation process includes two stages. Usually used for preforming, roll forging is often employed to reduce thickness and increase length of stock. (3) Surface condition. 1910.1028 Benzene. (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. (b) Each two hand trip shall meet the construction requirements of paragraph (b)(6) of this section. Gears shall be guarded in accordance with one of the following methods: (ii) By a standard guard as described in paragraph (o) of this section, at least seven (7) feet high extending six (6) inches above the mesh point of the gears; or. (a) When used in press operations requiring more than one operator, separate two hand controls shall be provided for each operator, and shall be designed to require concurrent application of all operators' controls to activate the slide. 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. (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. Personal protective equipment shall be used in grinding operations, and equipment shall be used and maintained in accordance with ANSI B7.1-1970, Safety Code for the Use, Care, and Protection of Abrasive Wheels, which is incorporated by reference as specified in 1910.6, and with 1910.215. (iii) Portable units shall be used only in areas where good, general room ventilation is provided. (3) Feed rolls of band resaws shall be protected with a suitable guard to prevent the hands of the operator from coming in contact with the in-running rolls at any point. If, after review of the application, additional information, and inspection report, the applicant does not appear to have met the requirements for recognition, the Director of the PSDI certification/validation program shall notify the applicant in writing, listing the specific requirements of this appendix which the applicant has not met, and the reasons. (9) Ring rolls mean a class for forging equipment used for shaping weldless rings from pierced discs or thick-walled, ring-shaped blanks between rolls which control wall thickness, ring diameter, height and contour. Die-setting and maintenance procedures shall comply with paragraphs (a) through (g) of this section, and shall not be done in the PSDI mode.
eCFR :: 29 CFR Part 1910 -- Occupational Safety and Health Standards 2. 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) The upper hood shall completely enclose the upper portion of the blade down to a point that will include the end of the saw arbor. The adjustment shall not be made with the wheel in motion. The failure shall be indicated by the system. Pulleys shall be kept in proper alignment to prevent belts from running off. 1. b. Tongs shall be of sufficient length to clear the body of the worker in case of kickback, and shall not have sharp handle ends. 1910.308 Special systems. PART 1910 - OCCUPATIONAL SAFETY AND HEALTH STANDARDS Source: 39 FR 23502, June 27, 1974, unless otherwise noted.