(i) Both flanges, of any type, between which a wheel is mounted, shall be of the same diameter and have equal bearing surface. 30, 1984; 51 FR 34561, Sept. 29, 1986; 53 FR 8353, 8358 Mar. If you work for a Federal agency, use this drafting (ii) The ram shall be blocked with a material the strength of which shall meet or exceed the specifications or dimensions shown in Table O-11. (h) Keys, setscrews, and other projections. The clearance between the edge of the rear table and the cutter head shall be not more than one-eighth inch. Machinery shall be oiled when not in motion, wherever possible. The time increase allowed shall be limited to no more than 10 percent of the longest press stopping time measured at the top of the stroke, or 10 milliseconds, whichever is longer. 1910.1007 3,-Dichlorobenzidine (and its salts). 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.) (b) Each two hand control shall meet the construction requirements of paragraph (b)(7)(v) of this section. 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. In addition, a permanent label not less than 112 inches by 34 inch shall be affixed to the rear of the guard at approximately the level of the arbor, reading as follows: Danger: Do Not Rip or Plough From This End. 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. (a) As used in 1910.213 and 1910.214 unless the context clearly requires otherwise, the following woodworking machinery terms shall have the meaning prescribed in this paragraph. If the conveyor runs overhead, precautions must be taken to prevent injuries from materials that may fall from above. The safety factor and/or derated percentage shall be specifically noted and complied with. 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. (2) Foot operated devices. (3) Scrap handling. Upsetters shall be provided with a means for locking out the power at its entry point to the machine and rendering its cycling controls inoperable. 4. (g) Swing cutoff saws. Where guard is exposed to contact with moving equipment additional strength may be necessary. Where tools are used for feeding, removal of scrap, lubrication of parts, or removal of parts that stick on the die in PSDI operations: (A) The minimum diameter of the tool handle extension shall be greater than the minimum object sensitivity of the presence sensing device(s) used to initiate press strokes; or. 1. When more than one wheel is mounted between a single set of flanges, wheels may be cemented together or separated by specially designed spacers. 1910.218 Forging machines. The validation organization shall have a reasonable written procedure for acknowledging and processing appeals or complaints from program participants (manufacturers, producers, suppliers, vendors and employers) as well as other interested parties (employees or their representatives, safety personnel, government agencies, etc. 1910.122 Table of contents. 1910.1008 bis-Chloromethyl ether. (a) When used in press operations requiring more than one operator, separate two hand trips shall be provided for each operator, and shall be designed to require concurrent application of all operators' to activate the slide. The manufacturer's recommended procedures for maintenance and inspection should be closely followed. 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. 1910.140 Personal fall protection systems. When more than one wheel is mounted between a single set of flanges, wheels may be cemented together or separated by specially designed spacers. This subdivision does not apply to flywheels with solid web centers. The back flange shall extend beyond the central hub or raised portion and contact the wheel to counteract the side pressure on the wheel in use. Adjustments shall be made only by authorized personnel whose qualifications include a knowledge of the provisions of Table O-10 and this subparagraph. Revolving drums, barrels, and containers shall be guarded by an enclosure which is interlocked with the drive mechanism, so that the barrel, drum, or container cannot revolve unless the guard enclosure is in place. Therefore, the wall dimension W takes precedence over the diameter of the recess as an essential intermediate dimension to describe this shape type. 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. 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. a. (b) As used in 1910.215 unless the context clearly requires otherwise, the following abrasive wheel machinery terms shall have the meanings prescribed in this paragraph. (c) Presses. Adjustment of the location of the PSDI presence sensing device shall require use of a special tool available only to the authorized persons. 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. (eg: Nonmandatory supplementary information and guidelines relating to certification/validation of the PSDI safety system are provided to appendix B to this standard. Public review and comment period. A certification/validation report shall be prepared for each PSDI safety system for which the certification is validated. 1910.216 Mills and calenders in the rubber and plastics industries. fOSHA Conveyor Standards 1. (xiii) The Control system shall incorporate interlocks for supplemental guards, if used, which will prevent stroke initiation or will stop a stroke in progress if any supplemental guard fails or is deactivated. 1910.136 Foot protection. a. (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. (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). 2. (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. (i) All calenders, irrespective of size of the rolls or their configuration, shall be stopped within a distance, as measured in inches of surface travel, not greater than 134 percent of the peripheral no-load surface speeds of the respective calender rolls as determined in feet per minute. 2 Adapted from U.S. Department of Agriculture Technical Bulletin 479. 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. (39) Inch means an intermittent motion imparted to the slide (on machines using part revolution clutches) by momentary operation of the Inch operating means. (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. Showing adjustable tongue giving required angular protection for all sizes of wheel used. This subparagraph does not apply to manually operated sprockets. A PSDI safety system which has received installation certification/validation shall undergo recertification/revalidation the earlier of: a. 1910.161 Fixed extinguishing systems, dry chemical. 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. 1910.509Incorporation by reference. (2) It is recommended, however, that no projecting setscrews or oilcups be used in any revolving pulley or part of machinery. and 2. for the combined position. (iii) Table O-8 and Figure O-35 show minimum dimensions for straight flanges that are an integral part of wheel sleeves which are frequently used on precision grinding machines. Types of Tests Acceptable for Certification/Validation. (c) The control system shall incorporate an antirepeat feature. formatting. The recognition of each validation organization will be valid for five years, unless terminated before or renewed after the expiration of the period. Handling equipment attach points shall be provided on all dies requiring mechanical handling. 1910.1048 Formaldehyde. Subpart GOccupational Health and Environmental Control. (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. 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. (g) Reports of injuries to employees operating mechanical power presses. Maximum hole size for all other applications should not exceed one-half wheel diameter. (1) Safety-bit chucks with no projecting set screws shall be used. 1910.266 Logging operations. 1. The scope of the appendix includes the three categories of certification/validation required by the PSDI standard: Design Certification/Validation, Installation Certification/Validation, and Annual Recertification/Revalidation. It is recommended, however, that no projecting setscrews or oilcups be used in any revolving pulley or part of machinery. (ii) The control system shall incorporate a means of dynamically monitoring for decoupling of the rotary position indicating mechanism drive from the crankshaft. (23) Die shoe means a plate or block upon which a die holder is mounted. 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. The written procedures for test and certification/validation of PSDI systems, and the standards and test methods on which they are based, shall be reproducible and be available to OSHA and to the public upon request. Acceptance and field inspection. If a stairway accesses the catwalk, the width requirements depend on the width of the stairway that serves it. (5) Full revolution clutch means a type of clutch that, when tripped, cannot be disengaged until the crankshaft has completed a full revolution and the press slide a full stroke. Control components shall be selected, constructed, and connected together in such a way as to withstand expected operational and environmental stresses, at least including those outlined in appendix A. Subpart PHand and Portable Powered Tools and Other Hand-Held Equipment. (1) Determination of distance of travel. (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. This contact form is only for website help or website suggestions. Surface Feet per minute .262 12 1,000 = 3,144 s.f.p.m. (iv) A PSDI set-up/reset means shall be provided which requires an overt action by the operator, in addition to PSDI mode selection, before operation of the press by means of PSDI can be started. General. 1910.15 Shipyard employment. 2. (2) Guard exposure angles. If you would like to comment on the current content, please use the 'Content Feedback' button below for instructions on contacting the issuing agency. 1910.402 Definitions. (ii) If the single-stroke mechanism is dependent upon spring action, the spring(s) shall be of the compression type, operating on a rod or guided within a hole or tube, and designed to prevent interleaving of the spring coils in event of breakage. (5) Additional requirements for safe-guarding. Machines designed for a fixed location shall be securely anchored to prevent walking or moving. Standards covering issues of occupational safety and health which have general application without regard to any specific industry are incorporated by reference in paragraphs (b) through (m) of this section and in subparagraphs (3) and (4) of this paragraph and made applicable under this section. Where the drive extends over other machine or working areas, protection against falling shall be provided. The manufacturer shall design a test to demonstrate that the prescribed minimum object sensitivity of the presence sensing device is met. (6) Emphasis is placed upon the importance of maintaining cleanliness around woodworking machinery, particularly as regards the effective functioning of guards and the prevention of fire hazards in switch enclosures, bearings, and motors. 1910.1028 Benzene. "Employers want to make sure their equipment is safe to operate," says McCullough. (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. Shall be free of operational control and influence of manufacturers, suppliers, vendors, employers, or employee representatives that would impair its integrity of performance; and. developer resources. (1) Hazards to personnel associated with broken or falling machine components. When a recognized validation organization has filed such a renewal request, its current recognition will not expire until a final decision has been made on the request. (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. 1910.4 Amendments to this part. (iii) 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. 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. (2) Instruction to operators. 1910.1009 beta-Naphthylamine. b. (11) Rivet making machines mean the same as upsetters and boltheaders when producing rivets with stock diameter of 1-inch or more. (11) Device means a press control or attachment that: (i) Restrains the operator from inadvertently reaching into the point of operation, or, (ii) Prevents normal press operation if the operator's hands are inadvertently within the point of operation, or, (iii) Automatically withdraws the operator's hands if the operator's hands are inadvertently within the point of operation as the dies close, or. The triprods shall be accessible and shall operate readily whether the rods are pushed or pulled. (xi) The control of air-clutch machines shall be designed to prevent a significant increase in the normal stopping time due to a failure within the operating value mechanism, and to inhibit further operation if such failure does occur. (1) Inspection and maintenance records. 3. (2) Calender means a machine equipped with two or more metal rolls revolving in opposite directions and used for continuously sheeting or plying up rubber and plastics compounds and for frictioning or coating materials with rubber and plastics compounds. (5) Each wood jointer with vertical head shall have either an exhaust hood or other guard so arranged as to enclose completely the revolving head, except for a slot of such width as may be necessary and convenient for the application of the material to be jointed. 2. (i) Expanded metal, sheet or perforated metal, and wire mesh shall be securely fastened to frame. 29 CFR 1910 Subpart O - Machinery and Machine Guarding - 1910.212 General Requirements for All Machines 29 CFR 1926 Subpart N - Helicopters, Hoists, Elevators, and Conveyors - 1926.555 Conveyors U.S. Occupational Safety and Health Administration Publication, "Safeguarding Equipment and Protecting Employees from Amputations", OSHA 3170-02R, 2007 If you have questions or comments regarding a published document please (4) Gravity hammers mean a class of forging hammer wherein energy for forging is obtained by the mass and velocity of a freely falling ram and the attached upper die. They allow workers to reduce the amount of materials handled manually thereby increasing work capacity and production output. (e) Trip and emergency switches. b. (iii) A presence sensing point of operation device shall protect the operator as provided in paragraph (c)(3)(i)(a) of this section, and shall be interlocked into the control circuit to prevent or stop slide motion if the operator's hand or other part of his body is within the sensing field of the device during the downstroke of the press slide. This exposure shall begin at a point not more than 65 above the horizontal plane of the wheel spindle. If cracked, there will be a dead sound and not a clear ring.. (m) Standard guards - general requirements -. The employer shall provide clearance between machines so that movement of one operator will not interfere with the work of another. 1. The bottom of the guard shall come to within three-eighths inch of a plane formed by bottom or contact face of the feed roll where it touches the stock. Provide employees with the right battery handling equipment. (11) Hydraulic equipment. 1910.1010 Benzidine. (29) Manual feeding means feeding wherein the material or part being processed is handled by the operator on each stroke of the press. (3) Bench and floor stands. 1910.112-1910.113 [Reserved] These safety training PowerPoints cover the items specified by OSHA standards. (b) Mechanical power press guarding and construction, general -. (ii) The spindle end, nut, and outer flange may be exposed on machines designed as portable saws. Instructions for use of the test rod shall be noted on a label affixed to the presence sensing device. (iii) Modified Types 6 and 11 wheels (terrazzo) with tapered K dimension. (4) Belt sanding machines shall be provided with guards at each nip point where the sanding belt runs on to a pulley. 1910.265 Sawmills. It is necessary to maintain clearance between the wheel side and the guard. (i) The pedal mechanism shall be protected to prevent unintended operation from falling or moving objects or by accidental stepping onto the pedal. (4) Overloading. (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. 1910.1053 Respirable crystalline silica. Dp = Penetration depth factor, required to provide for possible penetration through the presence sensing field by fingers or hand before detection occurs. Brakes which are the adjustable type shall be adjusted properly before the test. 1910.264 Laundry machinery and operations. (18) Die means the tooling used in a press for cutting or forming material. flat belts two (2) inches or less in width which are free from metal lacings or fasteners. PART 1910 - OCCUPATIONAL SAFETY AND HEALTH STANDARDS Source: 39 FR 23502, June 27, 1974, unless otherwise noted. In powerplants only the lower run of the belt need be guarded. d. The applicant shall identify the test methods it or the validating laboratory will use to test or judge the components and operations of the PSDI safety system required to be tested by the PSDI standard and appendix A, and shall specify the reasons the test methods are appropriate. (viii) The two hand trip device shall protect the operator as specified in paragraph (c)(3)(i)(e) of this section. (3) Surface condition. (iv) The Inch operating means shall be designed to prevent exposure of the workers hands within the point of operation by: (a) Requiring the concurrent use of both hands to actuate the clutch, or. 1910.213 Woodworking machinery requirements. (i) Projecting shaft ends shall present a smooth edge and end and shall not project more than one-half the diameter of the shaft unless guarded by nonrotating caps or safety sleeves. Ample room for cleaning machines, handling material, work pieces, and scrap shall also be provided. Hangers. 1. e-CFR 1910.219 (a) General requirements. Such attachments shall be securely anchored and adjusted in such a way that the operator is restrained from reaching into the point of operation. (2) General requirements for machine guards. 3. (iv) For flywheels with smooth rims five (5) feet or less in diameter, where the preceding methods cannot be applied, the following may be used: A disk attached to the flywheel in such manner as to cover the spokes of the wheel on the exposed side and present a smooth surface and edge, at the same time providing means for periodic inspection.
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