1910.23 Ladders. 1910.1047 Ethylene oxide. (iii) The intensity of illumination conforms to the requirements of ANSI A11.1-1965 (R-1970), which is incorporated by reference as specified in 1910.6. (B) The length of the hand tool shall be such as to ensure that the operator's hand will be detected for any safety distance required by the press set-ups. Types 27 and 28 wheels, because of their shape, require specially designed adaptors. (ix) A scale guard of substantial construction shall be provided at the back of every press, so arranged as to stop flying scale. Collars. The Office of the Federal Register publishes documents on behalf of Federal agencies but does not have any authority over their programs. ), (9) Exposure adjustment. The recommendations of the brake system manufacturer shall be used to simulate or estimate the brake wear. Nonmandatory supplementary information and guidelines relating to certification/validation of the PSDI safety system are provided to appendix B to this standard. 1910.304 Wiring design and protection. (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. ), (5) Surface grinders and cutting-off machines. 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. Bandsaw wheels shall be fully encased. (13) Control reliability. 1910.213 Woodworking machinery requirements. (12) The knife blade of jointers shall be so installed and adjusted that it does not protrude more than one-eighth inch beyond the cylindrical body of the head. 1910.261 Pulp, paper, and paperboard mills. [39 FR 23502, June 27, 1974, as amended at 39 FR 41846, Dec. 3, 1974; 53 FR 8353, Mar. The vertical clearance in passageways between the floor and power transmission beams, ceiling, or any other objects, is not less than five feet six inches (5 ft. 6 in.). Guards for horizontal overhead belts shall run the entire length of the belt and follow the line of the pulley to the ceiling or be carried to the nearest wall, thus enclosing the belt effectively. Side grinding wheel having a diameter, thickness and wall - wheel is mounted on the diameter. The employer shall evaluate and test the PSDI system installation, shall submit to the OSHA-recognized third-party validation organization the necessary supporting documentation, and shall certify that the requirements of 1910.217(a) through (h) and this appendix A have been met and that the installation is proper. (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. Sec. However, the guarding of these gears is highly recommended. (5) Where an exhaust system is used, the guard shall form part or all of the exhaust hood and shall be constructed of metal of a thickness not less than that specified in subparagraph (1) of this paragraph. (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. The brake monitor used with the Type B gate or movable barrier device shall be installed in a manner to detect slide top-stop overrun beyond the normal limit reasonably established by the employer. 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. Sections 1910.217 and 1910.219 also issued under 5 U.S.C. (vii) Reactivation of PSDI operation following deactivation of the PSDI mode from any other cause, such as activation of the red color stop control required by paragraph (b)(7)(ii) of this section, interruption of the presence sensing field, opening of an interlock, or reselection of the number of sensing field interruptions/withdrawals required to cycle the press, shall require resetting of the set-up/reset means. The validation organization's laboratory (which organizationally may be a part of the third-party validation organization): 1. 8. (5) Grinding. Dimensions of such flanges shall never be less than indicated. 5. A recognized validation organization may renew its recognition by filing a renewal request at the address in paragraph I.A.3. (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. (ii) Two-hand trip systems on full revolution clutch machines shall incorporate an antirepeat feature. Both types are reinforced, organic bonded wheels having offset hubs which permit side and peripheral grinding operations without interference with the mounting. Steam hammers shall be provided with a quick closing emergency valve in the admission pipeline at a convenient location. (2) Saws. 1910.126 Additional requirements for special dipping and coating operations. (19) Die builder means any person who builds dies for power presses. (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. Pulleys with cracks, or pieces broken out of rims, shall not be used. (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. However, in determining eligibility for a foreign-based third-party validation organization, OSHA shall take into consideration whether there is reciprocity of treatment by the foreign government after consultation with relevant U.S. government agencies. Pulleys, any parts of which are seven (7) feet or less from the floor or working platform, shall be guarded in accordance with the standards specified in paragraphs (m) and (o) of this section. Where light curtain object sensitivity is user-adjustable, either discretely or continuously, design features shall limit the minimum object sensitivity adjustment not to exceed one and one-fourth inches (31.75 mm). (ii) The motor start button shall be protected against accidental operation. 1910.213 Woodworking machinery requirements. 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. Enhanced content is provided to the user to provide additional context. (ii) Belt shifter and clutch handles shall be rounded and be located as far as possible from danger of accidental contact, but within easy reach of the operator. Type 27 wheels are manufactured with flat grinding rims permitting notching and cutting operations. 1910.147 The control of hazardous energy (lockout/tagout). Publication. All guards shall be rigidly braced every three (3) feet or fractional part of their height to some fixed part of machinery or building structure. The application for expansion will be acted upon and processed by OSHA in accordance with subsection I.B. This document is not intended to be totally inclusive but rather to highlight the information and requirements in the complete OSHA standard that all owners and 1 The recommendations listed in the above table are guides for the conditions stated. (viii) Number of operators required for the operation and the number of operators provided with controls and safeguards. (B) After a press has been equipped with a safety system whose design has been certified and validated in accordance with paragraph (h)(11)(i) of this section, the safety system installation shall be certified by the employer, and then shall be validated by an OSHA-recognized third-party validation organization to meet all applicable requirements of paragraphs (a) through (h) and appendix A of this section. The validation organization representative shall witness at least one set of tests. 2. The hazard created by a guide post (when it is located in the immediate vicinity of the operator) when separated from its bushing by more than one-fourth inch shall be considered as a point of operation hazard and be protected in accordance with paragraph (c) of this section. Spacers shall be equal in diameter to the mounting flanges and have equal bearing surfaces. (i) Wood guards may be used in the woodworking and chemical industries, in industries where the presence of fumes or where manufacturing conditions would cause the rapid deterioration of metal guards; also in construction work and in locations outdoors where extreme cold or extreme heat make metal guards and railings undesirable. Shall not engage in the design, manufacture, sale, promotion, or use of the certified equipment. 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. Blocks or wedges shall be made of material the strength and construction of which should meet or exceed the specifications and dimensions shown in Table O-11. (i) Tables O-4 and O-6 and Figures O-30 and O-32 show minimum dimensions for straight relieved and unrelieved flanges for use with wheels with small holes that fit directly on the machine spindle. The maximum angular exposure of the grinding wheel periphery and sides for safety guards used on cylindrical grinding machines shall not exceed 180. The dates of the period of recognition will be stated in the recognition letter. The certification/validation report shall include the following: b. The employer shall certify that the PSDI safety system has been design certified and validated, that the installation meets the operational and environmental requirements specified by the manufacturer, that the installation drawings are accurate, and that the installation meets the requirements of 29 CFR 1910.217 (a) through (h) and this appendix A. (iii) Full revolution mechanical power presses shall not be used in the PSDI mode of operation. Die-setting and maintenance procedures shall comply with paragraphs (a) through (g) of this section, and shall not be done in the PSDI mode. The press manufacturer's recommendations shall be followed. 1910.102 Acetylene. 1910.1004 alpha-Naphthylamine. Limitation: These wheels shall be mounted only with a special tapered flange. (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. In no case shall a warning device of leather or other material attached to the spindle be acceptable. (ii) The operating levers on hand-tripped presses having more than one operating station shall be interlocked to prevent the tripping of the press except by the concurrent use of all levers. Guarding. Standard conditions shall be secured by the use of the following materials. Conveyor safety hazards are varied, and the most common type is contact with the moving belt or other parts. (7) Direct drive means the type of driving arrangement wherein no clutch is used; coupling and decoupling of the driving torque is accomplished by energization and deenergization of a motor. Where guard is exposed to contact with moving equipment, additional strength may be necessary. Displaying title 29, up to date as of 3/02/2023. OSHA Conveyor Standards 1926.555 (a) General requirements. Minimum object sensitivity describes the largest acceptable size of the interruption in the sensing field. (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). 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. 1910.11 Scope and purpose. (b) A Type B gate or movable barrier device shall protect the operator in the manner specified in paragraph (c)(3)(i)(g) of this section. (1) All projecting keys, setscrews, and other projections in revolving parts shall be removed or made flush or guarded by metal cover. The variance in flange diameters, the adaptor nut being less than one-third wheel diameter, and the use of side pressure in wheel operation limits the use to reinforced organic bonded wheels. (3) Cylinder draining. (iii) Safety tripwire cable or wire center cord. The safety system provision continues the concept of paragraph (b)(13) that the probability of two independent failures in the length of time required to make one press cycle is so remote as to be a negligible risk factor in the total array of equipment and human factors. (2) Each self-feed circular ripsaw shall be provided with sectional non-kickback fingers for the full width of the feed rolls. 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 be not less than three-sixteenths inch in thickness. 1910.28 Duty to have fall protection and falling object protection. FAR). 1910.24 Step bolts and manhole steps. result, it may not include the most recent changes applied to the CFR. 1910.1050 Methylenedianiline. Gears. In every case the sides of trough shall extend at least two (2) inches beyond the shafting or protuberance. (v) The employer shall provide brushes, swabs, lubricating rolls, and automatic or manual pressure guns so that operators and diesetters shall not be required to reach into the point of operation or other hazard areas to lubricate material, punches or dies. The sides of the lower exposed portion of the blade shall be guarded to the full diameter of the blade by a device that will automatically adjust itself to the thickness of the stock and remain in contact with stock being cut to give maximum protection possible for the operation being performed. (ii) The point of operation of machines whose operation exposes an employee to injury, shall be guarded. 1910.180 Crawler locomotive and truck cranes. Based on this, the Assistant Secretary shall issue the final decision (including reasons) of the Department of Labor stating whether the applicant has demonstrated by a preponderance of evidence that it meets the requirements for recognition. In all other industries, wood guards shall not be used. (2) Each radial saw used for ripping shall be provided with nonkickback fingers or dogs located on both sides of the saw so as to oppose the thrust or tendency of the saw to pick up the material or to throw it back toward the operator. (10) Sheaves mean grooved pulleys, and shall be so classified unless used as flywheels. The employer shall provide clearance between machines so that movement of one operator will not interfere with the work of another. 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. 1910.212 General requirements for all machines. Pulleys, any parts of which are seven (7) feet or less from the floor or working platform, shall be guarded in accordance with the standards specified in paragraphs (m) and (o) of this section. Inclined and vertical shafts, particularly inclined idler shafts, shall be securely held in position against endwise thrust. d. When one year has elapsed since the installation certification/validation or the last recertification/revalidation. (6) Multiple wheel mounting. The manufacturer shall design a set of integrated tests to demonstrate compliance with the following requirements: Sections 1910.217(h)(6) (ii); (iii); (iv); (v); (vi); (vii); (viii); (ix); (xi); (xii); (xiii); (xiv); (xv); and (xvii). (4) Shot blast. The written notice shall indicate the termination date. Clutches, cutoff couplings, or clutch pulleys having projecting parts, where such clutches are located seven (7) feet or less above the floor or working platform, shall be enclosed by a stationary guard constructed in accordance with this section. 1910.1025 Lead. 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. Acceptance and field inspection. The midrail may be one by four (1 x 4) inches or more. The maximum angular exposure above the horizontal plane of the wheel spindle as specified in paragraphs (b) (3) and (4) of this section shall never be exceeded, and the distance between the wheel periphery and the adjustable tongue or the end of the peripheral member at the top shall never exceed one-fourth inch. (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 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. (7) Environmental requirements. (4) Guards for horizontal overhead rope and chain drives. It should be noted that this does not require redundancy for press components such as structural elements, clutch/brake mechanisms, plates, etc., for which adequate reliability may be achieved by proper design, maintenance, and inspection. Unused keyways shall be filled up or covered. 1910.1045 Acrylonitrile. These tests shall specify the acceptable tolerance band sufficient to assure that tolerance build-up will not render the safety distance unsafe. (4) Where practicable, hand and footpower guillotine veneer cutters shall be provided with rods or plates or other satisfactory means, so arranged on the feeding side that the hands cannot reach the cutting edge of the knife while feeding or holding the stock in place. For installation certification/validation and annual recertification/revalidation, in the first stage the employer certifies or recertifies that the employer is installing or utilizing a PSDI safety system validated as meeting the design requirements of 29 CFR 1910.217 (a) through (h) and this appendix A by an OSHA-recognized third-party validation organization and that the installation, operation and maintenance meet the requirements of 29 CFR 1910.217 (a) through (h) and this appendix A.

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