The maximum angular exposure of the grinding wheel periphery and sides for safety guards used on cylindrical grinding machines shall not exceed 180. It should also be noted that organic bonded wheels do not emit the same clear metallic ring as do vitrified and silicate wheels. Recording of inspections shall be in the form of a certification record which includes the date the inspection was performed, the signature of the person who performed the inspection and the serial number, or other identifier, of the equipment inspected. Such attachments shall be securely anchored and adjusted in such a way that the operator is restrained from reaching into the point of operation. d. When the change of state is motion, the measurement shall be made at the completion of the motion. (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. Object sensitivity describes the capability of a presence sensing device to detect an object in the sensing field, expressed as the linear measurement of the smallest interruption which can be detected at any point in the field. 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. (b) Guarding of abrasive wheel machinery -. (4) Type 11 flaring cup wheels mean wheels having double diameter dimensions D and J, and in addition have thickness, hole size, rim and back thickness dimensions. Such tools shall not be in lieu of other guarding required by this section, but can only be used to supplement protection provided. (13) Cutting off wheels means wheels having diameter thickness and hole size dimensions and are subject to all limitations of mounting and use listed for type 1 wheels, the definition in subparagraph (1) of this paragraph and paragraph (d) of 1910.215. This is an automated process for (14) Operators shall not ride the carriage of a veneer slicer. (g) Enclosing the point of operation before a press stroke can be initiated, so as to prevent an operator from reaching into the point of operation prior to die closure or prior to cessation of slide motion during the downward stroke. All upsetters shall be installed so that they remain on their supporting foundations. Machines designed for a fixed location shall be securely anchored to prevent walking or moving. (2) Arbor size. (iv) Personal protective equipment (gloves, goggles, aprons, and other items) shall be worn. This valve shall be closed and locked in the off position while the hammer is being adjusted, repaired, or serviced, or when the dies are being changed. Reaction time means the time, in seconds, it takes the signal, required to activate/deactivate the system, to travel through the system, measured from the time of signal initiation to the time the function being measured is completed. (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. The manufacturer's certification 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. 1910.421 Pre-dive procedures. (C) The air pressure supply for clutch/brake valves on machines used in the PSDI mode shall be regulated to pressures less than or equal to the air pressure used when making the stop time measurements required by paragraph (h)(2)(ii) of this section. c. Its employees are secure from discharge resulting from pressures from manufacturers, suppliers, vendors, employers or employee representatives. (3) Limit chains or other equally effective devices shall be provided to prevent the saw from swinging beyond the front or back edges of the table, or beyond a forward position where the gullets of the lowest saw teeth will rise above the table top. The test specifications and procedures shall be made available upon request to the validation organization. In the second stage, the OSHA-recognized third-party validation organization validates that the PSDI safety system meets the requirements of 29 CFR 1910.217 (a) through (h) and this appendix A and the manufacturer's certification by reviewing the manufacturer's design and test data and performing any additional reviews required by this standard or which it believes appropriate. Steam or air piping shall conform to the specifications of American National Standard ANSI B31.1.0-1967, Power Piping with Addenda issued before April 28, 1971, which is incorporated by reference as specified in 1910.6. If its necessary to clean belts or drums while the equipment in is motion, insure proper barrier guards are in place and that no part of the equipment can be activated which could endanger the individual at work. (v) For cutting-off wheels larger than 16 inches diameter and where speed does not exceed 14,200 surface feet per minute, safety guards as specified in Figures O-27 and O-28, and in Table O-1 shall be used. See Table O-10. This subdivision does not apply to flywheels with solid web centers. 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. You are using an unsupported browser. 1910.1050 Methylenedianiline. (i) Thermostatic control of heating elements shall be provided to maintain proper melting temperature and prevent overheating. We're always open to new suggestions on safety training topics you'd like to see! Nor would it be necessary to repeat these tests in the case of modifications where determined by the manufacturer and validated by the third-party validation organization to be equivalent by similarity analysis. This appendix provides nonmandatory supplementary information and guidelines to assist in the understanding and use of 29 CFR 1910.217(h) to allow presence sensing device initiation (PSDI) of mechanical power presses. 1910.216 Mills and calenders in the rubber and plastics industries. (4) Pulley speeds. The validation organization representative shall witness at least one set of tests. 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. (vi) Certain Type 1 and Type 27A cutting-off wheels. 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. 1910.1011 4-Aminodiphenyl. 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. Provision shall be made in both the upper and lower shoes for securely mounting the die to the bolster and slide. 1910.98 Effective dates. (12) Guard design specifications. 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. tensile strength 50,000 p.s.i.) (4) Shot blast. (B) The safety distance shall be checked for compliance with (h)(9)(v) of this section. 1910.145 Specifications for accident prevention signs and tags. 7. 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. (i) A two-hand trip shall have the individual operator's hand controls protected against unintentional operation and have the individual operator's hand controls arranged by design and construction and/or separation to require the use of both hands to trip the press and use a control arrangement requiring concurrent operation of the individual operator's hand controls. Limitation: Minimum back thickness, E dimension, should not be less than one-fourth T dimension. Table O-7 - Minimum Dimensions for Straight Flanges - for Mechanical Grinders 12,500 S.F.P.M. Cold trimming presses shall be safeguarded in accordance with 1910.217(c). 3. Where guard is exposed to contact with moving equipment, additional strength may be necessary. (4) Pressure pipes. 1910.133 Eye and face protection. Antirepeat is also called single stroke reset or reset circuit. 1910.5 Applicability of standards. (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. Spacers shall be equal in diameter to the mounting flanges and have equal bearing surfaces. c. The manufacturer shall specify the test requirements and procedures from existing consensus tests in compliance with the provisions of the National Electrical Code. Type 27 and Type 28 wheels shall be used only with a safety guard located between wheel and operator during use. Belt shippers and shipper poles. 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. (vii) Where presence sensing device location is adjustable, adjustment shall require the use of a special tool available only to authorized persons. (59) Control system means sensors, manual input and mode selection elements, interlocking and decision-making circuitry, and output elements to the press operating mechanism. (c) As used in 1910.216, unless the context clearly requires otherwise, the following mills and calenders in the rubber and plastic industries terms shall have the meanings prescribed in this paragraph. (i) Presses operated in the PSDI mode shall be equipped with a brake monitor that meets the requirements of paragraphs (b)(13) and (b)(14) of this section. the hierarchy of the document. (i) Each continuous line of shafting shall be secured in position against excessive endwise movement. 1910.1045 Acrylonitrile. The board enclosure shall be securely fastened to the hammer. (vi) Equipment shall be kept clean, particularly from accumulations of yellow lead oxide. Mandatory requirements for certification/validation of the PSDI safety system are provided in appendix A and appendix C to this standard. 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. The cleaning chamber shall have doors or guards to protect operators. Maximum hole size for all other applications should not exceed one-half wheel diameter. 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. (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. (iv) An interlocked press barrier guard shall be attached to the press frame or bolster and shall be interlocked with the press clutch control so that the clutch cannot be activated unless the guard itself, or the hinged or movable sections of the guard are in position to conform to the requirements of Table O-10. Power-transmission apparatus located in basements. 1910.1018 Inorganic arsenic. (f) As used in 1910.219, unless the context clearly requires otherwise, the following mechanical power-transmission guarding terms shall have the meaning prescribed in this paragraph. Shafting shall be kept in alignment, free from rust and excess oil or grease. The ground shall be provided through use of a separate ground wire and polarized plug and receptacle. (i) Die setting on presses used in the PSDI mode shall be performed in accordance with paragraphs (d) and (h) of this section. (iii) Be constructed and installed in a manner to monitor brake system performance on each stroke. California Code of Regulations, Title 8, Section 3999. Conveyors. This book includes the complete Part 1910 - General Industry, Part 1903 - Inspections, Citations and Proposed Penalties, 1904 - Recording and Reporting Occupational Injuries and Illnesses regulations, and Part 1928 - Occupational . (1) General requirements. Guarding Floors, Stairs, & Other Openings - Safety Checklist Program Appendix C to Subpart T of Part 1910Alternative Conditions Under 1910.401(a)(3) for Recreational Diving Instructors and Diving Guides (Mandatory). A PSDI safety system which has received installation certification/validation shall undergo recertification/revalidation the earlier of: a. The driving point of all friction drives when exposed to contact shall be guarded, all arm or spoke friction drives and all web friction drives with holes in the web shall be entirely enclosed, and all projecting belts on friction drives where exposed to contact shall be guarded. (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. Grinding is always performed on rim face, W dimension. (c) Safeguarding the point of operation -. (b) 12-inch diameter wheel, 1,000 revolutions per minute. (C) Maintain a certification record of each inspection, and each maintenance and repair task performed, under the general component of the inspection program that includes the date of the inspection, maintenance, or repair work, the signature of the person who performed the inspection, maintenance, or repair work, and the serial number, or other identifier, of the power press inspected, maintained, and repaired. (5) Blotters. Minor modifications not affecting the safety of the system may be made by the manufacturer without revalidation. (2) Cold trimming presses. They shall be designed to provide adequate holding power for all the thicknesses of materials being cut. 1910.37 Maintenance, safeguards, and operational features for exit routes. (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. The upper-wheel guard shall be made to conform to the travel of the saw on the wheel. (13) Gate or movable barrier device means a movable barrier arranged to enclose the point of operation before the press stroke can be started. 1910.426 Mixed-gas diving. (ii) A die enclosure guard shall be attached to the die shoe or stripper in a fixed position. 1910.12 Construction work. (i) Guardrail shall be forty-two (42) inches in height, with midrail between top rail and floor. (1) A mechanical or electrical power control shall be provided on each machine to make it possible for the operator to cut off the power from each machine without leaving his position at the point of operation. (1) Point of operations means that point at which cutting, shaping, boring, or forming is accomplished upon the stock. (i) Cutting-off wheels, Types 1 and 27A (see paragraphs (c)(1) (ii) and (iii) of this section). The documentation shall include, but not be limited to, the following items: a. Where guard is exposed to contact with moving equipment, additional strength may be necessary. The various openings are such that for average size hands an operator's fingers won't reach the point of operation. 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. In addition, when unthreaded hole wheels are specified, the inside flat, K dimension, must be large enough to accommodate a suitable flange. Tm = Increase in the press stopping time at the top of the stroke, in seconds, allowed by the brake monitor for brake wear. Grade V60-30. 1910.139 [Reserved] 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. Materials should be placed on the conveyor so that they will ride safely. If the deficiencies are not corrected, OSHA may revoke recognition, effective in 60 days, unless the validation organization requests a hearing within that time. (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. Table O-1 - Minimum Basic Thickness for Peripheral and Side Members for Safety Guards Used With Cutting-Off Wheels, Table O-3 - Guide for Construction of Band Type Guards, Table O-5 - Minimum Dimensions for Straight Adaptor Flange - for Organic Bonded Wheels Over 114 Inches Thick1. (d) As used in 1910.217, unless the context clearly requires otherwise, the following power press terms shall have the meaning prescribed in this paragraph. Abrasive wheel machinery guards shall meet the design specifications of the American National Standard Safety Code for the Use, Care, and Protection of Abrasive Wheels, ANSI B7.1-1970, which is incorporated by reference as specified in 1910.6. The basement, tower, or room occupied by transmission equipment is locked against unauthorized entrance. They may be steel centered, diamond abrasive or organic bonded abrasive of the plain or reinforced type. (D) A check shall be made to assure that the barriers and/or supplemental presence sensing devices required by paragraph (h)(9)(ix) of this section are operating properly. 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) Each circular resaw shall be guarded by a hood or shield of metal above the saw. (3) Surface condition. (c) The safety distance (Ds) between each two hand control device and the point of operation shall be greater than the distance determined by the following formula: (d) Two hand controls shall be fixed in position so that only a supervisor or safety engineer is capable of relocating the controls. (i) Diamond wheels, except certain vitrified diamond wheels. (2) Ambient relative humidity of 99 percent. This table shows the distances that guards shall be positioned from the danger line in accordance with the required openings. The hood shall be so mounted as to insure that its operation will be positive, reliable, and in true alignment with the saw; and the mounting shall be adequate in strength to resist any reasonable side thrust or other force tending to throw it out of line. The OSHA catwalk width requirements are found in section 1910.28 (b) (5) (ii) (A). (1) All projecting keys, setscrews, and other projections in revolving parts shall be removed or made flush or guarded by metal cover. 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. 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. (ii) The point of operation of machines whose operation exposes an employee to injury, shall be guarded. full text search results Reactivation of the clutch shall require restoration of normal air supply and use of the tripping mechanism(s). Appendix D to Subpart L of Part 1910Availability of Publications Incorporated by Reference in Section 1910.156 Fire Brigades (4) This section covers the principal features with which power transmission safeguards shall comply. (7) Driving flange. If you work for a Federal agency, use this drafting 1910.22 General requirements. To accomplish this, the machine spindle shall be made to nominal (standard) size plus zero minus .002 inch, and the wheel hole shall be made suitably oversize to assure safety clearance under the conditions of operating heat and pressure. ( 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. (1) Each circular crosscut table saw shall be guarded by a hood which shall meet all the requirements of paragraph (c)(1) of this section for hoods for circular ripsaws. Navigate by entering citations or phrases Sections 1910.217 and 1910.219 also issued under 5 U.S.C. (2) Calenders. 1910.16 Longshoring and marine terminals. (f) Certain Type 1 and Type 27A cutting-off wheels. (64) Certification or certify means, in the case of design certification/validation, that the manufacturer has reviewed and tested the design and manufacture, and in the case of installation certification/validation and annual recertification/revalidation, that the employer has reviewed and tested the installation, and concludes in both cases that the requirements of 1910.217 (a) through (h) and appendix A have been met. (2) Belt shippers and shipper poles. Appendix A to Subpart I of Part 1910References for Further Information (Non-mandatory) PDF All Conveyors - Safety Section - Sukup (m) Standard guards - general requirements -. The certification/validation process should confirm that hazards identified by hazard analysis, (HA), failure mode effect analysis (FMEA), and other system analyses have been eliminated by design or reduced to an acceptable level through the use of appropriate design features, safety devices, warning devices, or special procedures. (1) Determination of distance of travel. Shaft couplings shall be so constructed as to present no hazard from bolts, nuts, setscrews, or revolving surfaces. (6) Where two or more workers are employed at the same time on the same power-driven guillotine veneer cutter equipped with two-hand control, the device shall be so arranged that each worker shall be required to use both hands simultaneously on the controls to start the cutting motion, and at least one hand on a control to complete the cut. 1910.212 General requirements for all machines. If no exceptions are filed, this is the final decision of the Department of Labor. Horizontal overhead belts more than seven (7) feet above floor or platform shall be guarded for their entire length under the following conditions: If located over passageways or work places and traveling 1,800 feet or more per minute. Integrated test of the press fully equipped to operate in the PSDI mode shall be conducted to establish the total system reaction time. (3) Each tenoning machine shall have all cutting heads, and saws if used, covered by metal guards. If center to center distance between pulleys is ten (10) feet or more. (2) General requirements for machine guards. (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. (ii) At least annually thereafter, the safety system on a mechanical power press used in the PSDI mode shall be recertified by the employer and revalidated by an OSHA-recognized third-party validation organization to meet all applicable requirements of paragraphs (a) through (h) and appendix A of this section. (8) Forging rolls mean a class of auxiliary forging equipment wherein stock is shaped between power driven rolls bearing contoured dies. 2 For wheels under 114 inch thick F dimension shall not exceed 40 percent of wheel thickness. (5) Unitized tooling. (d) Two hand trips shall be fixed in position so that only a supervisor or safety engineer is capable of relocating the controls. 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. Where the work is applied to the wheel above the horizontal centerline, the exposure of the grinding wheel periphery shall be as small as possible and shall not exceed 60. Mounts which are affixed to the wheel by the manufacturer shall not be reused. 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. 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. 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 The scale shall be marked to indicate that brake adjustment and/or replacement is required. The third-party validation organization shall validate the manufacturer's certification under paragraphs 2 and 3. (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. Belt perches. Minimum requirements. (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. (13) Revolving double arbor saws shall be fully guarded in accordance with all the requirements for circular crosscut saws or with all the requirements for circular ripsaws, according to the kind of saws mounted on the arbors. 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. (5) Flywheels include flywheels, balance wheels, and flywheel pulleys mounted and revolving on crankshaft of engine or other shafting. 1910.308 Special systems. (2) through (4) of this appendix except that the burden of proof shall be on OSHA to demonstrate by a preponderance of the evidence that the recognition should be revoked because the validation organization either is not meeting the requirements for recognition, has not been performing the validation functions required by the PSDI standard and appendix A, or has misrepresented itself in its applications. (1) Inspection. Pulleys with cracks, or pieces broken out of rims, shall not be used. After installation of point of operation guards and before a job is released for operation a check should be made to verify that the guard will prevent the operator's hands from reaching the point of operation.