tensile strength 50,000 p.s.i.) a. will also bring you to search results. The visual check shall include a determination that the spring housing or rod does not show damage sufficient to degrade the structural integrity of the unit, and the spring does not show any tendency to interleave. 1. Some metals can be forged at room temperature, but the majority of metals are made more plastic for forging by heating. We're always open to new suggestions on safety training topics you'd like to see! (3) Guarding vertical and inclined shafting. Use of a brake monitor does not eliminate the need for periodic brake inspection and maintenance to reduce the possibility of catastrophic failures. 7. The explanation and use of the scale shall be documented. Please do not provide confidential (1) General. The certification/validation report shall include the following: b. The triprods shall be accessible and shall operate readily whether the rods are pushed or pulled. (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. 3. The adaptor nut which is less than the minimum one-third diameter of wheel fits in the depressed side of wheel to prevent interference in side grinding and serves to drive the wheel by its clamping force against the depressed portion of the back flange. On the completion of such operations, the spreader shall be immediately replaced. In powerplants only the lower run of the belt need be guarded. This distance shall apply to the actual working level, whether it be at the general floor level, in a pit, or on a platform. (13) Gate or movable barrier device means a movable barrier arranged to enclose the point of operation before the press stroke can be started. View the most recent official publication: These links go to the official, published CFR, which is updated annually. Compliance with 1910.217(h)(2)(ii). 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. If, after review of the application, any additional information, and the inspection report, the applicant and any validating laboratory appear to have met the requirements for recognition, a written recommendation shall be submitted by the responsible OSHA personnel to the Assistant Secretary to approve the application with a supporting explanation. (51) Slide means the main reciprocating press member. When frequent oiling must be done, openings with hinged or sliding self-closing covers shall be provided. (xiv) The clutch/brake control shall automatically deactivate in event of failure of the counterbalance(s) air supply. (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. (l) Belt shifters, clutches, shippers, poles, perches, and fasteners -. (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. 553. [39 FR 23502, June 27, 1974, as amended at 49 FR 5323, Feb. 10, 1984; 51 FR 34561, Sept. 29, 1986; 61 FR 9240, Mar. (1) Minimum requirements. 1910.112-1910.113 [Reserved] 1910.213 Woodworking machinery requirements. 1910.1013 beta-Propiolactone. Where presence sensing devices are used for supplemental safeguarding, a check for proper operation shall be performed using the test rod according to the presence sensing device manufacturer's instructions. Natural sandstone wheels and metal, wooden, cloth, or paper discs, having a layer of abrasive on the surface are not covered by this section. 1910.216 Mills and calenders in the rubber and plastics industries. 1910.105 Nitrous oxide. 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. (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. (4) Vertical belts. 1 The recommendations listed in the above table are guides for the conditions stated. This type, however, differs from Type 5 in that the grinding is performed on the wall of the abrasive created by the difference between the diameter of the recess and the outside diameter of the wheel. All mechanical power transmission apparatus located in basements, towers, and rooms used exclusively for power transmission equipment shall be guarded in accordance with this section, except that the requirements for safeguarding belts, pulleys, and shafting need not be complied with when the following requirements are met: (i) The basement, tower, or room occupied by transmission equipment is locked against unauthorized entrance. (Ts is defined as the sum of the kinetic energy dissipation time plus the pneumatic/magnetic/hydraulic reaction time of the clutch/brake operating mechanism(s).). (i) Tight and loose pulleys on all new installations made on or after August 31, 1971, shall be equipped with a permanent belt shifter provided with mechanical means to prevent belt from creeping from loose to tight pulley. The maximum angular exposure of the grinding wheel periphery and sides for safety guards used on machines known as swing frame grinding machines shall not exceed 180, and the top half of the wheel shall be enclosed at all times. The employer shall: (i) Use dies and operating methods designed to control or eliminate hazards to operating personnel, and. 1910.176 Handling materialsgeneral. 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. (3) Type 6 straight cup wheels means wheels having diameter, thickness, hole size, rim thickness, and back thickness dimensions. 1910.427 Liveboating. 1910.155 Scope, application and definitions applicable to this subpart. 39 FR 23502, June 27, 1974, unless otherwise noted. 1910.213 Woodworking machinery requirements. The application for expansion will be acted upon and processed by OSHA in accordance with subsection I.B. The Occupational Safety and Health Administration's (OSHA's) requirements for machine guarding are found in 29 Code of Federal Regulations (CFR) 1910 Subpart O, Machinery and Machine Guarding as detailed below; 1910.211 Definitions; 1910.212 General requirements for all machines; . learn more about the process here. 1910.181 Derricks. 20), and the openings shall be not greater than three-eighths inch. Where loose pulleys or idlers are not practicable, belt perches in form of brackets, rollers, etc., shall be used to keep idle belts away from the shafts. (See Figure O-24-A.). An alternative manual cycle initiation and control means shall be supplied for use in die setting which meets the requirements of paragraph (b)(7) of this section. 1910.217 Mechanical power presses. Tp = Longest presence sensing device response time, in seconds. For saws with tilting tables or tilting arbors the fence shall be so constructed that it will remain in a line parallel with the saw, regardless of the angle of the saw with the table. (1) Determination of distance of travel. 1910.156 Fire brigades. Publication. 2. This is an automated process for (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. 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. All upsetters shall be installed so that they remain on their supporting foundations. of this appendix, subject to the possible reinspection exception. 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. (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. 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. The upper run shall be so guarded as to prevent contact therewith either by the worker or by objects carried by him. Similarity analysis should not be accepted when the internal and external stresses on the item being certified/validated are not defined. (2) Ambient relative humidity of 99 percent. (3) Sprockets on chain or slat-belt conveyors shall be enclosed. Vertical and inclined belts (paragraphs (e) (3) and (4) of this section) if not more than two and one-half (2 12) inches wide and running at a speed of less than one thousand (1,000) feet per minute, and if free from metal lacings or fastenings may be guarded with a nip-point belt and pulley guard. The guarding device shall be in conformity with any appropriate standards therefor, or, in the absence of applicable specific standards, shall be so designed and constructed as to prevent the operator from having any part of his body in the danger zone during the operating cycle. The press manufacturer's recommendations shall be followed. (i) The employer shall establish a diesetting procedure that will insure compliance with paragraph (c) of this section. c. Demonstration that review has been made of the reports covering the design certification/validation, the installation certification/validation, and all recertification/revalidations, in order to detect any degradation to an unsafe condition, and that necessary changes have been made to restore the safety system to previous certification/validation levels. (4) Flywheels and bearings. (4) Installation shall be in such a manner that the front end of the unit will be slightly higher than the rear, so as to cause the cutting head to return gently to the starting position when released by the operator. (1) Hazards to personnel associated with broken or falling machine components. (b) The control system shall be designed to permit an adjustment which will require concurrent pressure from both hands during the die closing portion of the stroke. The term manufacturers refers to the manufacturer of any of the components of the safety system. (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. When blotters or flange facings of compressible material are required, they shall cover entire contact area of wheel flanges. (2) Each self-feed circular ripsaw shall be provided with sectional non-kickback fingers for the full width of the feed rolls. The third-party validation organization shall validate the employer's certifications that the PSDI safety system is design certified and validated, that the installation meets the installation and environmental requirements specified by the manufacturer, and that the installation meets the requirements of 29 CFR 1910.217 (a) through (h) and this appendix A. A report shall be made of each field inspection. (1) Belts include all power transmission belts, such as flat belts, round belts, V-belts, etc., unless otherwise specified. Instructions for use of the test rod shall be noted on a label affixed to the presence sensing device. b. Shaft couplings shall be so constructed as to present no hazard from bolts, nuts, setscrews, or revolving surfaces. (2) Guard design. (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. ), (8) Top grinding. (4) Lathes used for turning long pieces of wood stock held only between the two centers shall be equipped with long curved guards extending over the tops of the lathes in order to prevent the work pieces from being thrown out of the machines if they should become loose. A copy of the test report shall be maintained on file at the validation organization and/or validating laboratory, and shall be available to OSHA upon request. (vi) It shall be the responsibility of the employer to ensure the competence of personnel caring for, inspecting, and maintaining power presses equipped for PSDI operation, through initial and periodic training. Gears. (2) Type 2 cylinder wheels means wheels having diameter, wheel thickness, and rim thickness dimensions. The analysis reports should identify: (1) The basis for the analysis; (2) the hardware or software items analyzed; (3) conclusions; (4) safety factors; and (5) limit of the analysis.
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