(iii) A fixed barrier guard shall be attached securely to the frame of the press or to the bolster plate. fOSHA Conveyor Standards (iv) single strand V-belts, the width of which is thirteen thirty-seconds (1332) inch or less. (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. If you have questions for the Agency that issued the current document please contact the agency directly. (5) Additional requirements for safe-guarding. ), Wherever the nature of the work requires contact with the wheel below the horizontal plane of the spindle, the exposure shall not exceed 125. PART 1910 - OCCUPATIONAL SAFETY AND HEALTH STANDARDS Source: 39 FR 23502, June 27, 1974, unless otherwise noted. This appendix provides employers, manufacturers, and their representatives, with nonmandatory guidelines for use in developing certification documents. If such guard is constructed of sheet metal, the material used shall be not less than 116 inch in thickness, and if cast iron is used, it shall be not less than three-sixteenths inch in thickness. 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. 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. Rivet making with less than 1-inch diameter is usually a cold forging operation, and therefore not included in this subpart. For hole sizes smaller than shown in this table, use table 12. Where the upper and lower runs of horizontal belts are so located that passage of persons between them would be possible, the passage shall be either: Completely barred by a guardrail or other barrier in accordance with paragraphs (m) and (o) of this section; or. (ii) The relevant requirements of paragraphs (a) through (g) of this section also shall apply to all presses used in the PSDI mode of operation, whether or not cross referenced in this paragraph (h). 1910.1043 Cotton dust. The spindle speed of the machine shall be checked before mounting of the wheel to be certain that it does not exceed the maximum operating speed marked on the wheel. Peripheral grinding wheel having a diameter, thickness and hole. switch to drafting.ecfr.gov. They allow workers to reduce the amount of materials handled manually thereby increasing work capacity and production output. Gears shall be guarded in accordance with one of the following methods: (ii) By a standard guard as described in paragraph (o) of this section, at least seven (7) feet high extending six (6) inches above the mesh point of the gears; or. Expanded metal, sheet or perforated metal, and wire mesh shall be securely fastened to frame. The cone belt and pulley shall be equipped with a belt shifter so constructed as to adequately guard the nip point of the belt and pulley. (vi) For thread grinding wheels not exceeding 1 inch in thickness cast iron or malleable iron safety guards as specified in Figures O-36 and O-37, and in Table O-9 shall be used. (b) Abrasive discs (inserted nut, inserted washer, and projecting stud type). 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. (2) Inspection and maintenance. (47) Repeat means an unintended or unexpected successive stroke of the press resulting from a malfunction. 1910.120 Hazardous waste operations and emergency response. Appendix C to Subpart I of Part 1910Personal Fall Protection Systems Non-Mandatory Guidelines (i) Spring counterbalance systems when used shall incorporate means to retain system parts in event of breakage. 7, 1996; 69 FR 31882, June 8, 2004]. (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. The clutch/brake control system shall be designed and constructed to prevent actuation of the clutch if all operating stations are bypassed. (4) Guide post hazard. (8) Hinged saw tables shall be so constructed that the table can be firmly secured in any position and in true alignment with the saw. 1910.111 Storage and handling of anhydrous ammonia. Overhead horizontal belts, with lower parts seven (7) feet or less from the floor or platform, shall be guarded on sides and bottom in accordance with paragraph (o)(3) of this section. (h) Modified types 6 and 11 wheels (terrazzo). from the floor or platform may be guarded with a disk covering the spokes. Substantial modifications would require testing as a new safety system, as deemed necessary by the validation organization. 1910.178 Powered industrial trucks. 1910.38 Emergency action plans. Shaft couplings shall be so constructed as to present no hazard from bolts, nuts, setscrews, or revolving surfaces. Vertical and inclined shafting seven (7) feet or less from floor or working platform, excepting maintenance runways, shall be enclosed with a stationary casing in accordance with requirements of paragraphs (m) and (o) of this section. (i) Point of operation devices shall protect the operator by: (a) Preventing and/or stopping normal stroking of the press if the operator's hands are inadvertently placed in the point of operation; or, (b) Preventing the operator from inadvertently reaching into the point of operation, or withdrawing his hands if they are inadvertently located in the point of operation, as the dies close; or, (c) Preventing the operator from inadvertently reaching into the point of operation at all times; or, (e) Requiring application of both of the operator's hands to machine operating controls and locating such controls at such a safety distance from the point of operation that the slide completes the downward travel or stops before the operator can reach into the point of operation with his hands; or, (f) Enclosing the point of operation before a press stroke can be initiated, and maintaining this closed condition until the motion of the slide had ceased; or. All metal should be free from burrs and sharp edges. (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. (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. d. Tests designed by the manufacturer shall be made available upon request to the validation organization. 1910.1005 [Reserved] 1910.122 Table of contents. Allow OSHA to conduct unscheduled reviews or on-site audits of it or the validating laboratories on matters relevant to PSDI, and cooperate in the conduct of these reviews and audits; 2. In overhead silent chain-drive guards where the chain is held from lateral displacement on the sprockets, the side clearances required on drives of twenty (20) inch centers or under shall be not less than one-fourth inch from the nearest moving chain part, and on drives of over twenty (20) inch centers a minimum of one-half inch from the nearest moving chain part. (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).). 1910.184 Slings. Where the drive extends over other machine or working areas, protection against falling shall be provided. 1910.501 [Reserved] (3) Surface condition. Hand feeding tools are intended for placing and removing materials in and from the press. 3. (ii) Air-lift hammers shall have an air shutoff valve as required in paragraph (d)(2) of this section. The tripwire cable or wire center cord shall operate readily whether cable or cord is pushed or pulled. 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. Compliance with 1910.217(h)(9)(x). By a band guard covering the face of gear and having flanges extended inward beyond the root of the teeth on the exposed side or sides. 2. (ix) A scale guard of substantial construction shall be provided at the back of every press, so arranged as to stop flying scale. Consistency of braking action is enhanced by high brake torque. You are using an unsupported browser. (iii) Modified Types 6 and 11 wheels (terrazzo) with tapered K dimension. (d) Each pull-out device in use shall be visually inspected and checked for proper adjustment at the start of each operator shift, following a new die set-up, and when operators are changed. (10) Material requirements and minimum dimensions. Learn more about the eCFR, its status, and the editorial process. This table technically only applies to mechanical power presses operated within OSHA's jurisdiction, although some industry consensus standards also reference this table, such as ANSI B65.1 . 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 not be less than three-sixteenths inch in thickness. user convenience only and is not intended to alter agency intent 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. 1910.253 Oxygen-fuel gas welding and cutting. The guard shall be such that it does not offer an accident hazard in itself. The adjustment shall not be made with the wheel in motion. 1910.1014 2-Acetylaminofluorene. 1910.266 Logging operations. (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. All drip cups and pans shall be securely fastened. 7, 1996]. All projecting keys, setscrews, and other projections in revolving parts shall be removed or made flush or guarded by metal cover. If made of wood, the posts shall be two by four (2 4) inches or larger. http://www.osha.gov/pls/oshaweb/mechanical.html. Filing office location. 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. Natural sandstone wheels and metal, wooden, cloth, or paper discs, having a layer of abrasive on the surface are not covered by this section. Workplace Violence. 2. 1 Flanges shall be of steel, quality SAE 1040 or equivalent, annealed plate, heat treated to R. 25-30. Forging hammers, counterblow equipment and high-energy-rate forging machines impart impact to the workpiece, while most other types of forging equipment impart squeeze pressure in shaping the stock. (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. (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. (iii) When presses used in the PSDI mode have flywheel or bullgear running on crankshaft mounted journals and bearings, or a flywheel mounted on back shaft journals and bearings, periodic inspections following the press manufacturer's recommendations shall be made to ascertain that bearings are in good working order, and that automatic lubrication systems for these bearings (if automatic lubrication is provided) are supplying proper lubrication. 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. This document is available in the following developer friendly formats: Information and documentation can be found in our 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. The OSHA-recognized third-party validation organization shall conduct tests, and/or review and evaluate the employer's installation tests, documentation and representations. Table O-8 - Minimum Dimensions for Straight Flanges Used as Wheel Sleeves for Precision Grinding Only. The PSDI safety system shall remain under certification/validation for the shorter of one year or until the system hardware is changed, modified or refurbished, or operating conditions are changed (including environmental, application or facility changes), or a failure of a critical component has occurred. Inspection shall be made of belts, lacings, and fasteners and such equipment kept in good repair. (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. 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. (1) The cutting heads of each wood shaper, hand-fed panel raiser, or other similar machine not automatically fed, shall be enclosed with a cage or adjustable guard so designed as to keep the operator's hand away from the cutting edge. If belt is eight (8) inches or more in width. ), (9) Exposure adjustment. Flywheels located so that any part is seven (7) feet or less above floor or platform shall be guarded in accordance with the requirements of this subparagraph: (i) With an enclosure of sheet, perforated, or expanded metal, or woven wire; (ii) With guard rails placed not less than fifteen (15) inches nor more than twenty (20) inches from rim. In all other industries, wood guards shall not be used. Flanges shall be dimensionally accurate and in good balance. Revision of application. 1910.219 - Mechanical power-transmission apparatus. Inspections of the clutch/brake mechanism, antirepeat feature, and single-stroke mechanism conducted under the directed component of the inspection program are exempt from the requirement to maintain certification records specified by paragraph (e)(1)(i)(C) of this section, but inspections of the clutch/brake mechanism, antirepeat feature, and single-stroke mechanism conducted under the general component of the inspection program are not exempt from this requirement. (3) Tail rods or extension piston rods. (2) Guard exposure angles. Amendments and withdrawals. A separate set of restraints shall be provided for each operator if more than one operator is required on a press. 7, 1996; 69 FR 31882, June 8, 2004; 76 FR 80739, Dec. 27, 2011; 77 FR 46949, Aug. 7, 2012; 78 FR 69550, Nov. 20, 2013]. Die-setting shall not be done in the PSDI mode. No changes found for this content after 1/03/2017. Surface Feet per minute .262 24 1,000 = 6,288 s.f.p.m. (v) The route followed by the oiler is protected in such manner as to prevent accident. Higher pressures may be permitted, however, to increase clutch torque to free jammed dies, provided positive measures are provided to prevent the higher pressure at other times. Appendices to Subpart L of Part 1910Note (f) Certain Type 1 and Type 27A cutting-off wheels. The angular exposure of the grinding wheel periphery and sides for safety guards used on machines known as bench and floor stands should not exceed 90 or one-fourth of the periphery. (59) Control system means sensors, manual input and mode selection elements, interlocking and decision-making circuitry, and output elements to the press operating mechanism. The guard shall be constructed of heavy material, preferably metal, and firmly secured to the frame carrying the rolls so as to remain in adjustment for any thickness of stock. (viii) The control system shall incorporate an automatic means to prevent initiation or continued operation in the PSDI mode unless the press drive motor is energized in the forward direction of crankshaft rotation. (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. (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. f. The instrument used to measure reaction time shall be calibrated to be accurate to within 0.001 second. (14) No saw, cutter head, or tool collar shall be placed or mounted on a machine arbor unless the tool has been accurately machined to size and shape to fit the arbor. This table shows the distances that guards shall be positioned from the danger line in accordance with the required openings. Preliminary decision by Assistant Secretary. (D) The requirements for hand tools that may be used in the PSDI mode. Pulley speeds. Vertical belts running over a lower pulley more than seven (7) feet above floor or platform shall be guarded at the bottom in the same manner as horizontal overhead belts, if conditions are as stated in paragraphs (e)(2)(ii) (a) and (c) of this section. The areas covered by this set of standards include: An upper and a lower die make a complete set. A validation organization may not terminate its installation certification and recertification validation functions earlier than either one year from the date of the written notice, or the date on which another recognized validation organization is able to perform the validation of installation certification and recertification. If you have questions or comments regarding a published document please Three months prior to the operation of any alternative system, the employer must notify the OSHA Directorate of Safety Standards Programs of the name of the system to be installed, the manufacturer and the OSHA-recognized third-party validation organization immediately. (41) Knockout means a mechanism for releasing material from either die. The test(s) shall document the range of object diameter sizes which will produce both single and double break conditions. (d) Two hand trips shall be fixed in position so that only a supervisor or safety engineer is capable of relocating the controls. (iv) For cutting-off wheels 16 inches diameter and smaller and where speed does not exceed 16,000 surface feet per minute, cast iron or malleable iron safety guards as specified in Figures O-36 and O-37, and in Table O-9 shall be used. The unused run of the sanding belt shall be guarded against accidental contact. 1910.133 Eye and face protection. The validation organization shall demonstrate a capability for selecting, reviewing, and/or validating appropriate standards and test methods to be used for validating the certification of PSDI safety systems, as well as for reviewing judgements on the safety of PSDI safety systems and their conformance with the requirements of this section. 1910.156 Fire brigades. The safety system shall have the ability to sustain a single failure or a single operating error and not cause injury to personnel from point of operation hazards. (iii) If the cone is located less than 3 feet from the floor or working platform, the cone pulley and belt shall be guarded to a height of 3 feet regardless of whether the belt is endless or laced with rawhide. contact the publishing agency. Limitation: Rim height, T dimension, is generally equal to or greater than rim thickness, W dimension. (i) Limitation: Cutting off wheels are recommended only for use on specially designed and fully guarded machines and are subject to the following maximum thickness and hole size limitations. (4) Clutch means the coupling mechanism used on a mechanical power press to couple the flywheel to the crankshaft, either directly or through a gear train. 1910.3 Petitions for the issuance, amendment, or repeal of a standard. All new mill installations shall be installed so that the top of the operating rolls is not less than 50 inches above the level on which the operator stands, irrespective of the size of the mill. (2) Hand-operated gears. 1910.1013 beta-Propiolactone. (1) Each hand-fed planer and jointer with horizontal head shall be equipped with a cylindrical cutting head, the knife projection of which shall not exceed one-eighth inch beyond the cylindrical body of the head. The certification/validation report shall be signed by the Administrative Director and the Technical Director. Pulleys shall be kept in proper alignment to prevent belts from running off. These records shall be available for inspection by OSHA and OSHA State Plan offices. If you work for a Federal agency, use this drafting If made of metal shapes or bars, their section shall be equal in strength to that of one and one-half (112) by one and one-half (112) by three-sixteenths (316) inch angle iron. Programmable controllers which meet the requirements for controls with internally stored programs stated above shall be permitted only if all logic elements affecting the safety system and point of operation safety are internally stored and protected in such a manner that they cannot be altered or manipulated by the user to an unsafe condition. 2. (1) Gears. Wheels bonded with clay, glass, porcelain or related ceramic materials are characterized as vitrified bonded wheels. The provision of a spreader in connection with grooving, dadoing, or rabbeting is not required. These tests shall specify the acceptable tolerance band sufficient to assure that tolerance build-up will not render the safety distance unsafe. (See Figures O-6 and O-7 and paragraph (b)(9) of this section. 1910.1029 Coke oven emissions. (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. (14) Operators shall not ride the carriage of a veneer slicer. It would not be necessary to repeat the tests on individual safety systems of the same manufacture or design. (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. Guardrail shall be forty-two (42) inches in height, with midrail between top rail and floor. (9) Ring rolls mean a class for forging equipment used for shaping weldless rings from pierced discs or thick-walled, ring-shaped blanks between rolls which control wall thickness, ring diameter, height and contour. ), (7) Automatic snagging machines. (4) The Assistant Secretary shall review the record, the decision by the administrative law judge, and the exceptions. Similarity analysis should not be accepted when the internal and external stresses on the item being certified/validated are not defined.
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