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. (3) Manually operated controls. 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. In every case the sides of trough shall extend at least two (2) inches beyond the shafting or protuberance. 1910.158 Standpipe and hose systems. (vi) The presence sensing device location shall either be set at each tool change and set-up to provide at least the minimum safety distance, or fixed in location to provide a safety distance greater than or equal to the minimum safety distance for all tooling set-ups which are to be used on that press. 1910.177 Servicing multi-piece and single piece rim wheels. Grinding is always performed on rim face, W dimension. (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. (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. 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 1910.3 Petitions for the issuance, amendment, or repeal of a standard. (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. 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. (2) Hand-operated gears. (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. (9) Prime movers include steam, gas, oil, and air engines, motors, steam and hydraulic turbines, and other equipment used as a source of power. (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. (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. here. Such stopping distances shall be subject to engineering determination. (iii) Type 27A cutting-off wheels are designed to be mounted by means of flat, not relieved, flanges having matching bearing surfaces and which may be less than one-third but shall not be less than one-fourth the wheel diameter. (j) Modified Types 6 and 11 wheel (terrazzo) - blotters applied flat side of wheel only. The third-party validation organization shall validate the manufacturer's certification under paragraphs 2 and 3. (i) Shafting shall be kept in alignment, free from rust and excess oil or grease.
1910.261 - Occupational Safety and Health Administration Revision of application. A U type guard is permissible. Preliminary decision by Assistant Secretary. (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. Learn more about the eCFR, its status, and the editorial process. When refacing or truing, care shall be exercised to make sure that proper relief and rigidity is maintained as specified in paragraphs (c) (2) and (5) of this section and they shall be replaced when they do not conform to these subparagraphs and Table O-4, Figure O-30, Table O-5, Figure O-31, Table O-6, Figure O-32, and Table O-8, Figure O-35. (2) Ambient relative humidity of 99 percent. (eg: (2) Where an exhaust system is used, the guards shall form part or all of the exhaust hood and shall be constructed of metal of a thickness not less than that specified in paragraph (h)(1) of this section. Since that time there have been several revisions, 1987, 1990, 1993, an Addenda in 1992, 2003, 2009, 2012, and 2015. You can The validation organization representative shall witness at least one set of each of these tests. (i) Air-lift hammers shall have a safety cylinder head as required in paragraph (d)(1) of this section. (2) Safety trip, side. OSHA has two standards specific to conveyors, its 1910 standard applying to general industry. Friction brakes provided for stopping or holding a slide movement shall be inherently self-engaging by requiring power or force from an external source to cause disengagement. 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. The safety guard shall be mounted so as to maintain proper alignment with the wheel, and the strength of the fastenings shall exceed the strength of the guard, except: (i) Safety guards on all operations where the work provides a suitable measure of protection to the operator, may be so constructed that the spindle end, nut, and outer flange are exposed; and where the nature of the work is such as to entirely cover the side of the wheel, the side covers of the guard may be omitted; and. If the deficiencies are not corrected, OSHA may revoke recognition, effective in 60 days, unless the validation organization requests a hearing within that time. 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. On offhand grinding machines, work rests shall be used to support the work. (a)(1) OSHA Basics: OSHA's Special Industry Standards in Subpart R Means must be provided to prevent tightener from falling, in case the belt breaks. (OSHA 3170-02R, 2007) Title: Microsoft Word - FS Conveyors2.doc Author: rudnick Created Date: 11/18/2011 5:41:31 PM . The certification/validation process shall verify that the safety system complies with the OSHA safety requirements as follows: 1. (1) Feed rolls and saws shall be protected by a hood or guard to prevent the hands of the operator from coming in contact with the in-running rolls at any point. (iv) Type of safeguard(s) being used (two hand control, two hand trip, pullouts, sweeps, or other). (39) Inch means an intermittent motion imparted to the slide (on machines using part revolution clutches) by momentary operation of the Inch operating means. Scrap cutters used in conjunction with scrap handling systems shall be safeguarded in accordance with paragraph (c) of this section and with 1910.219. (7) Machines using part revolution clutches. For the purpose of demonstrating compliance with the reaction time required by 1910.217(h), the tests shall use the following definitions and requirements: a. Failure to observe these rules might cause excessive flange pressure around the hole of the wheel. Where the drive extends over other machine or working areas, protection against falling shall be provided. (v) Tongs shall be of sufficient length to clear the body of the worker in case of kickback, and shall not have sharp handle ends. 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. 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. (i) The control system on presses used in the PSDI mode shall meet the applicable requirements of paragraphs (b)(7), (b)(8), (b)(13), and (c)(5) of this section. Therefore, the wall dimension W takes precedence over the diameter of the recess as an essential intermediate dimension to describe this shape type. Belt fasteners. The guard shall prevent opening of the interlocked section and reaching into the point of operation prior to die closure or prior to the cessation of slide motion.
1910.219 - Occupational Safety and Health Administration In the second stage, the OSHA-recognized third-party validation organization validates or revalidates that the PSDI safety system installation meets the requirements of 29 CFR 1910.217 (a) through (h) and this appendix A and the employer's certification, by reviewing that the PSDI safety system has been certified; the employer's certification, designs and tests, if any; the installation, operation, maintenance and training; and by performing any additional tests and reviews which the validation organization believes is necessary. 1910.420 Safe practices manual. (34) Fixed barrier guard means a die space barrier attached to the press frame. 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). When dies are being changed, maintenance performed, or any work done on the machine, the power to the upsetter shall be locked out, and the flywheel shall be at rest. (3) Upon issuance of the decision, any party to the hearing may file exceptions within 20 days pursuant to subpart C. If exceptions are filed, the administrative law judge shall forward the decision, exceptions and record to the Assistant Secretary for the final decision on the application. 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. 1910.211 Definitions. This distance shall apply to the actual working level, whether it be at the general floor level, in a pit, or on a platform. The adjustment shall be done under the supervision of an authorized person whose qualifications include knowledge of safety distance requirements and experience with the brake system and its adjustment. 1910.254 Arc welding and cutting. (vii) The two hand control device shall protect the operator as specified in paragraph (c)(3)(i)(e) of this section. Appendix A to Subpart S of Part 1910 References for Further Information. 1910.425 Surface-supplied air diving. 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. 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. 1910.166-1910.168 [Reserved] (3) Belt pole (sometimes called a belt shipper or shipper pole,) means a device used in shifting belts on and off fixed pulleys on line or countershaft where there are no loose pulleys. Copyright OSHA Safety Manuals | All Rights Reserved, Care For Your Half-Mask Air-Purifying Respirator, Cold Weather Hazards Of Propane Fueled Vehicles, Machine Safety- Requirements For Safeguards, IIPP Injury and Illness Prevention Program. The materials and dimensions specified in this paragraph shall apply to all guards, except horizontal overhead belts, rope, cable, or chain guards more than seven (7) feet above floor, or platform. (3) Machines using full revolution positive clutches. (iii) The band shall be of sufficient width and its position kept so adjusted that at no time will the wheel protrude beyond the edge of the band a distance greater than that indicated in Figure O-29 and in Table O-2 or the wall thickness (W), whichever is smaller. (1) All portions of the saw blade shall be enclosed or guarded, except for the working portion of the blade between the bottom of the guide rolls and the table. 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. 12 or .262 diameter in inches r.p.m. We recommend you directly contact the agency responsible for the content in question. On presses with provision for manual lubrication of flywheel or bullgear bearings, lubrication shall be provided according to the press manufacturer's recommendations. OSHA Basics: OSHA's Parts 1910 and 1926 ; OSHA Basics: How OSHA Standards are Named and Numbered; OSHA Basics: Incorporation by Reference (IBR) OSHA Basics: The OSHA Field Operations Manual; OSHA Basics: OSHA's Small Business Handbook ; OSHA Basics: The General Duty Clause-5. from the floor or platform may be guarded with a disk covering the spokes. Minimum requirements. (i) Die setting on presses used in the PSDI mode shall be performed in accordance with paragraphs (d) and (h) of this section. 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. 1910.263 Bakery equipment. Reactivation of the clutch shall require restoration of normal supply and the use of the tripping mechanism(s). Shall be free of operational control and influence of manufacturers, suppliers, vendors, employers, or employee representatives that would impair its integrity of performance; and. (iii) Special Revolving Cup Guards which mount behind the wheel and turn with it. (vii) A point of operation enclosure which does not meet the requirements of this subparagraph and Table O-10 shall be used only in conjunction with point of operation devices. Minor modifications not affecting the safety of the system may be made by the manufacturer without revalidation. information or personal data. Guarding Floor and Wall Openings and Holes OSHA Standard 1910.23 2 Overview This is a condensation of Standard 1910.23 of the Occupational Safety and Health Act. 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. Rivet making with less than 1-inch diameter is usually a cold forging operation, and therefore not included in this subpart. The test specifications and procedures shall be made available upon request to the validation organization. The test(s) shall document the range of object diameter sizes which will produce both single and double break conditions. (41) Knockout means a mechanism for releasing material from either die. (4) Bushing. 1910.132 General requirements. (2) Brakes. When dies are being changed or maintenance is being performed on the press, the following shall be accomplished: (i) The power to the press shall be locked out. (7) Nip-point belt and pulley guard means a device which encloses the pulley and is provided with rounded or rolled edge slots through which the belt passes. (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. The OSHA-recognized third-party validation organization shall conduct tests, and/or review and evaluate the employer's installation tests, documentation and representations. A slot opening for jack bar will be permitted. (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. (ix) The control design shall preclude any movement of the slide caused by operation of power on, power off, or selector switches, or from checks for proper operations as required by paragraph (h)(6)(xiv) of this section. (2) Foot operated devices. All sprocket wheels and chains shall be enclosed unless they are more than seven (7) feet above the floor or platform. The clearance line marks the distance required to prevent contact between guard and moving parts. (d) Muting (bypassing of the protective function) of such device, during the upstroke of the press slide, is permitted for the purpose of parts ejection, circuit checking, and feeding. Spacers shall be equal in diameter to the mounting flanges and have equal bearing surfaces. (xvii) Controls with internally stored programs (e.g., mechanical, electro-mechanical, or electronic) shall meet the requirements of paragraph (b)(13) of this section, and shall default to a predetermined safe condition in the event of any single failure within the system. (2) Guard exposure angles. (iii) Where brake engagement and clutch release is effected by spring action, such spring(s) shall operate in compression on a rod or within a hole or tube, and shall be of non-interleaving design. 1910.9 Compliance duties owed to each employee. (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. (b) The performance of combined subsystems meets OSHA's operational requirements. 1910.95 Occupational noise exposure. (ii) Where suspended counterweights are used and not guarded by location, they shall be so encased as to prevent accident. If you work for a Federal agency, use this drafting (2) Cranks and connecting rods. The outside periphery of the enclosure shall be solid. (viii) Number of operators required for the operation and the number of operators provided with controls and safeguards. 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. (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. Side grinding wheel having a diameter, thickness and wall - wheel is mounted on the diameter. (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. Workplace Violence. 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. (i) Cutting-off wheels, Types 1 and 27A (see paragraphs (c)(1) (ii) and (iii) of this section). 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.)
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