2022.08.24 WednesdayThe OSHA standards on general guarding of machinery and mechanical power transmission apparatus (29 CFR 1910.212 and 1910.219) are very broad and general minimum guarding standards, one of which was predicated on the 1970's version of the ANSI/ASME B15.1 standard, which itself had undergone several . (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) Each circular resaw (other than self-feed saws with a roller or wheel at back of the saw) shall be provided with a spreader fastened securely behind the saw. (59) Control system means sensors, manual input and mode selection elements, interlocking and decision-making circuitry, and output elements to the press operating mechanism. A copy of the certification/validation report shall be maintained on file at the validation organization and/or validating laboratory, and shall be available to the public upon request. Materials should be placed on the conveyor so that they will ride safely. The midrail may be one by four (1 x 4) inches or more. 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. (vi) Certain Type 1 and Type 27A cutting-off wheels. (2) Foot operated devices. 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. 2. [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. If workers need to cross over a conveyor, OSHA has specific requirements for both Construction and Marine applications of Conveyor Crossovers. (vii) The two hand control device shall protect the operator as specified in paragraph (c)(3)(i)(e) of this section. 1 Flanges for wheels under 2 inches diameter may be unrelieved and shall be maintained flat and true. All metal should be free from burrs and sharp edges. 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. C. Analyses may be used for certification/validation when existing data are available or when test is not feasible. Conveyor systems shall be equipped with an audible warning signal to be sounded immediately before starting up the conveyor. (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. 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. Analysis. Showing adjustable tongue giving required angular protection for all sizes of wheel used. The certification record shall be made available upon request to the Assistant Secretary for Occupational Safety and Health. (2) Brakes. (5) Changing dies. A. Certification/validation of hardware design below the system level should be accomplished by test and/or analysis. Pulley speeds. It shall be made of material that is soft enough so that it will be unlikely to cause tooth breakage. (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. 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. Toeboards shall be four (4) inches or more in height, of wood, metal, or of metal grill not exceeding one (1) inch mesh. 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. Surface Feet per minute .262 12 1,000 = 3,144 s.f.p.m. Hand feeding tools are intended for placing and removing materials in and from the press. On the completion of such operations, the spreader shall be immediately replaced. 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. (3) Auxiliary equipment. They shall be of rigid construction and designed to be adjustable to compensate for wheel wear. 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. 1910.15 Shipyard employment. 1910.305 Wiring methods, components, and equipment for general use. (c) Presses. PDF Safety Factsheet: Hazards of Conveyors - NYCOSH This section covers all types and shapes of power-transmission belts, except the following when operating at two hundred and fifty (250) feet per minute or less: Flat belts one (1) inch or less in width. Each manufacturer supplying parts, components, subsystems, and assemblies needs to maintain the quality of the product, and each employer needs to maintain the system in a non-degraded condition. 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. The maximum anticipated working pressures in any hydraulic system on a mechanical power press shall not exceed the safe working pressure rating of any component used in that system. 1910.178 Powered industrial trucks. 1910.1200 Hazard communication. It shall include instruction relative to the following items for presses used in the PSDI mode. (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. (iii) Training personnel for the proper inspection and maintenance of forging machinery and equipment. A hearing will be granted to an objecting member of the public only if evidence of failure to meet the requirements of this appendix is supplied to OSHA. Standard conditions shall be secured by the use of the following materials. 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. (iii) A presence sensing point of operation device shall protect the operator as provided in paragraph (c)(3)(i)(a) of this section, and shall be interlocked into the control circuit to prevent or stop slide motion if the operator's hand or other part of his body is within the sensing field of the device during the downstroke of the press slide. If used, these devices shall be located so as to detect all operator locations and positions not detected by the PSDI sensing field, and shall prevent stroking or stop a stroke in process when any supplemental sensing field(s) are interrupted. 1926.555 (a) (5) Where a conveyor passes over work areas, aisles, or thoroughfares, suitable guards shall be provided to protect employees required to work below the conveyors. The certification/validation process should also confirm that residual hazards identified by operational analysis are addressed by warning, labeling safety instructions or other appropriate means. Expanded metal, perforated or solid sheet metal, wire mesh on a frame of angle iron, or iron pipe securely fastened to floor or to frame of machine. Blanking of the sensing field is not permitted. (1) General requirements. (ii) All guards for inclined belts shall be arranged in such a manner that a minimum clearance of seven (7) feet is maintained between belt and floor at any point outside of guard. Such cross-referencing of specific requirements from paragraphs (a) through (g) of this section is intended only to enhance convenience and understanding in relating to the new provisions to the existing standard, and is not to be construed as limiting the applicability of other provisions in paragraphs (a) through (g) of this section. 1910.169 Air receivers. (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. If you have comments or suggestions on how to improve the www.ecfr.gov website or have questions about using www.ecfr.gov, please choose the 'Website Feedback' button below. The integrated test specifications and procedures shall be made available to the validation organization. Flywheels. For any timer setting greater than 15 seconds, the adjustment shall be made by the use of a special tool available only to authorized persons. (45) Point of operation means the area of the press where material is actually positioned and work is being performed during any process such as shearing, punching, forming, or assembling. (iii) Portable units shall be used only in areas where good, general room ventilation is provided. 1910.39 Fire prevention plans. 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. It shall automatically adjust itself to the thickness of and remain in contact with the material being cut. 1 Flanges shall be of steel, quality SAE 1040 or equivalent, annealed plate, heat treated to R. 25-30. Crossing Over Conveyors Safely The employer shall establish and follow an inspection program having a general component and a directed component. b. Instructions for use of the test rod shall be noted on a label affixed to the presence sensing device. Hangers shall be inspected to make certain that all supporting bolts and screws are tight and that supports of hanger boxes are adjusted properly. 2. 1910.426 Mixed-gas diving. b. (i) 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. A summary of part level content is listed below followed by the table of contents, where you can drill down further. (vi) Oil swabs, or scale removers, or other devices to remove scale shall be provided. 653, 655, 657; Secretary of Labor's Order No. Tail rods or extension piston rods shall be guarded in accordance with paragraphs (m) and (o) of this section, or by a guardrail on sides and end, with a clearance of not less than fifteen (15) nor more than twenty (20) inches when rod is fully extended. 1910.132 General requirements. (ix) Diamond wheels, except certain vitrified diamond wheels. (i) The requirements of paragraph (h) shall apply to all part revolution mechanical power presses used in the PSDI mode of operation. 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. 1910.261 - Occupational Safety and Health Administration user convenience only and is not intended to alter agency intent Where panels are fitted with expanded metal or wire mesh the middle rails may be omitted. The spreader shall be slightly thinner than the saw kerf and slightly thicker than the saw disk. The Type 27 A Wheel is mounted between flat non-relieved flanges of equal bearing surfaces. The scope of the appendix includes the three categories of certification/validation required by the PSDI standard: Design Certification/Validation, Installation Certification/Validation, and Annual Recertification/Revalidation. Table O-7 - Minimum Dimensions for Straight Flanges - for Mechanical Grinders 12,500 S.F.P.M. (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. (3) Shoe last and spoke lathes, doweling machines, wood heel turning machines, and other automatic wood-turning lathes of the rotating knife type shall be equipped with hoods enclosing the cutter blades completely except at the contact points while the stock is being cut. 1910.23 Ladders. One or more methods of machine guarding shall be provided to protect the operator and other employees in the machine area from hazards such as those created by point of operation, ingoing nip points, rotating parts, flying chips and sparks. It would not be necessary to repeat the tests on individual safety systems of the same manufacture or design.
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