See Table O-10. (41) Knockout means a mechanism for releasing material from either die. (i) Shafting shall be kept in alignment, free from rust and excess oil or grease. All points not readily accessible shall have oil feed tubes if lubricant is to be added while machinery is in motion. Compliance with 1910.217(h)(5)(iii) and (h)(9)(v). "Published Edition". (12) Guard design specifications. Wherever flywheels are above working areas, guards shall be installed having sufficient strength to hold the weight of the flywheel in the event of a shaft or wheel mounting failure. Guardrail shall be forty-two (42) inches in height, with midrail between top rail and floor. (1) Safety trip, face. (i) Tables O-4 and O-6 and Figures O-30 and O-32 show minimum dimensions for straight relieved and unrelieved flanges for use with wheels with small holes that fit directly on the machine spindle. The upper hood shall be constructed in such a manner and of such material that it will protect the operator from flying splinters, broken saw teeth, etc., and will deflect sawdust away from the operator. (2) Saws. Bolts, nuts, and setscrews will, however, be permitted where they are covered with safety sleeves or where they are used parallel with the shafting and are countersunk or else do not extend beyond the flange of the coupling. The minimum guarding line is the distance between the infeed side of the guard and the danger line which is one-half inch from the danger line. 1910.98 Effective dates. Clutches, cutoff couplings, or clutch pulleys having projecting parts, where such clutches are located seven (7) feet or less above the floor or working platform, shall be enclosed by a stationary guard constructed in accordance with this section. Grinding is always performed on rim face, W dimension. (ii) Air-lift hammers shall have an air shutoff valve as required in paragraph (d)(2) of this section. 1910.143 Nonwater carriage disposal systems. 1910.213 Woodworking machinery requirements. Publication. Wheels bonded with clay, glass, porcelain or related ceramic materials are characterized as vitrified bonded wheels. 5. A slot opening for jack bar will be permitted. This does not apply to constant pressure controls used only for setup purposes. b. (2) Boring bits should be provided with a guard that will enclose all portions of the bit and chuck above the material being worked. (7) High-energy-rate forging machines mean a class of forging equipment wherein high ram velocities resulting from the sudden release of a compressed gas against a free piston impart impact to the workpiece. (2) Inspection and maintenance. Blocks or wedges shall be made of material the strength and construction of which should meet or exceed the specifications and dimensions shown in Table O-11. Flexible steel band brakes do not possess a long-term reliability against structural failure as compared to other types of brakes, and therefore are not acceptable on presses used in the PSDI mode of operation. Navigate by entering citations or phrases (10) Counterbalance means the mechanism that is used to balance or support the weight of the connecting rods, slide, and slide attachments. 1910.107 Spray finishing using flammable and combustible materials. (5) Saw frames or tables shall be constructed with lugs cast on the frame or with an equivalent means to limit the size of the saw blade that can be mounted, so as to avoid overspeed caused by mounting a saw larger than intended. 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. 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. As an added precaution to the requirements in paragraph (h)(2)(iii), brake adjustment locking means should be secured. (iii) Be constructed and installed in a manner to monitor brake system performance on each stroke. However, where an operator must do many operations outside the press, such as lubricating, trimming, deburring, etc., a longer interval up to 30 seconds is permitted. Since that time there have been several revisions, 1987, 1990, 1993, an Addenda in 1992, 2003, 2009, 2012, and 2015. (10) Air controlling equipment. An open space, not exceeding four (4) inches in width, may be left between the outside edge of the disk and the rim of the wheel if desired, to facilitate turning the wheel over. (i) Spring counterbalance systems when used shall incorporate means to retain system parts in event of breakage. (i) It shall be the responsibility of the employer to provide and insure the usage of point of operation guards or properly applied and adjusted point of operation devices on every operation performed on a mechanical power press. Where passage is regarded as necessary, there shall be a platform over the lower run guarded on either side by a railing completely filled in with wire mesh or other filler, or by a solid barrier. (3) Sprockets on chain or slat-belt conveyors shall be enclosed. (2) Cranks and connecting rods. (1) Belts include all power transmission belts, such as flat belts, round belts, V-belts, etc., unless otherwise specified. The third-party validation organization shall validate the manufacturer's certification under paragraphs 2 and 3. 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. 1910.37 Maintenance, safeguards, and operational features for exit routes. The midrail may be one by four (1 4) inches or more. OSHA Regulations on Long Hair Around Machinery - Career Trend On offhand grinding machines, work rests shall be used to support the work. After receipt of a notification of preliminary disapproval, the applicant may submit a revised application for further review by OSHA pursuant to subsection I.B. The upper rail shall be two by four (2 x 4) inches, or two one by four (1 x 4) strips, one at the top and one at the side of posts. If workers need to cross over a conveyor, OSHA has specific requirements for both Construction and Marine applications of Conveyor Crossovers. (i) Air valve and air pressure supply/control. General. (PDF) Best Practices on Conveyor Safety - ResearchGate The regular oilers shall wear tight-fitting clothing. Shaft couplings shall be so constructed as to present no hazard from bolts, nuts, setscrews, or revolving surfaces. Machines designed for a fixed location shall be securely anchored to prevent walking or moving. flat belts two (2) inches or less in width which are free from metal lacings or fasteners. Presses whose designs incorporate flywheels running on journals on the crankshaft or back shaft, or bull gears running on journals mounted on the crankshaft, shall be inspected, lubricated, and maintained as provided in paragraph (h)(10) of this section to reduce the possibility of unintended and uncontrolled press strokes caused by bearing seizure. Fixing of selection shall be by means capable of supervision by the employer. Search & Navigation For installation certification/validation and annual recertification/revalidation, in the first stage the employer certifies or recertifies that the employer is installing or utilizing a PSDI safety system validated as meeting the design requirements of 29 CFR 1910.217 (a) through (h) and this appendix A by an OSHA-recognized third-party validation organization and that the installation, operation and maintenance meet the requirements of 29 CFR 1910.217 (a) through (h) and this appendix A. (1) Safety trip control. (9) All belts, pulleys, gears, shafts, and moving parts shall be guarded in accordance with the specific requirements of 1910.219. (vii) Where presence sensing device location is adjustable, adjustment shall require the use of a special tool available only to authorized persons. (42) Liftout means the mechanism also known as knockout. 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. means the distance in feet any one abrasive grain on the peripheral surface of a grinding wheel travels in 1 minute. round belts one-half (12) inch or less in diameter; and. 1910.252 General requirements. c. Its employees are secure from discharge resulting from pressures from manufacturers, suppliers, vendors, employers or employee representatives. (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. (d) Fluid compatability with other materials, (d) Material stress tolerances and limits, (e) Stability to long term power fluctuations, (g) Repeatability of measured parameter without inadvertent initiation of a press stroke, (h) Operational life of components in cycles, hours, or both, (1) Specific operational wave lengths; and. 1910.334 Use of equipment. (2) Rivet making. (ii) A pad with a nonslip contact area shall be firmly attached to the pedal. (i) Expanded metal, sheet or perforated metal, and wire mesh shall be securely fastened to frame. 1910.336-1910.360 [Reserved], Safety Requirements for Special Equipment, 1910.399 Definitions applicable to this subpart. 1910.1025 Lead. This web site is designed for the current versions of A U type guard is permissible. (5) Full revolution clutch means a type of clutch that, when tripped, cannot be disengaged until the crankshaft has completed a full revolution and the press slide a full stroke. 1910.111 Storage and handling of anhydrous ammonia. Table O-7 - Minimum Dimensions for Straight Flanges - for Mechanical Grinders 12,500 S.F.P.M. All measurements on mills and calenders shall be taken with the rolls running empty at maximum operating speed. (2) The report shall include the following information: (i) Employer's name, address and location of the workplace (establishment). California Code of Regulations, Title 8, Section 3999. Conveyors. It is financially capable to conduct the work; b. The manufacturer shall certify and the OSHA-recognized third-party validation organization shall validate that: (a) The design of components, subsystems, software and assemblies meets OSHA performance requirements and are ready for the intended use; and. Its hood shall be so designed that it will automatically cover the lower portion of the blade, so that when the saw is returned to the back of the table the hood will rise on top of the fence, and when the saw is moved forward the hood will drop on top of and remain in contact with the table or material being cut. (vi) Oil swabs, or scale removers, or other devices to remove scale shall be provided. a. 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. Although this appendix as such is not mandatory, it references sections and requirements which are made mandatory by other parts of the PSDI standard and appendices. (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. If there is a valid request for a hearing pursuant to paragraph I.B.7.b. 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]. 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. c. The recognized validation organization shall continue to satisfy all the requirements of this appendix and the letter of recognition during the period of recognition. Belt shippers and shipper poles. (11) Device means a press control or attachment that: (i) Restrains the operator from inadvertently reaching into the point of operation, or, (ii) Prevents normal press operation if the operator's hands are inadvertently within the point of operation, or, (iii) Automatically withdraws the operator's hands if the operator's hands are inadvertently within the point of operation as the dies close, or. (v) An indicator visible to the operator and readily seen by the employer shall be provided which shall clearly indicate that the system is set-up for cycling in the PSDI mode. The spreader shall be slightly thinner than the saw kerf and slightly thicker than the saw disk. 1910.1096 Ionizing radiation. (c) Presses. 1910.38 Emergency action plans. This subparagraph does not apply to manually operated sprockets. Appendix A to Subpart T of Part 1910Examples of Conditions Which May Restrict or Limit Exposure to Hyperbaric Conditions (ix) If foot control is provided, the selection method between hand and foot control shall be separate from the stroking selector and shall be designed so that the selection may be supervised by the employer. 1910.142 Temporary labor camps. (b) Where passage is regarded as necessary, there shall be a platform over the lower run guarded on either side by a railing completely filled in with wire mesh or other filler, or by a solid barrier. (6) Circular saw fences shall be so constructed that they can be firmly secured to the table or table assembly without changing their alignment with the saw. (57) Two-hand trip means a clutch actuating means requiring the concurrent use of both hands of the operator to trip the press. Where a disk is used, the keys or other dangerous projections not covered by disk shall be cut off or covered. Certification/Validation Program Requirements. 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. Minimum requirements. (9) Flanges means collars, discs or plates between which wheels are mounted and are referred to as adaptor, sleeve, or back up type. 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. (2) General requirements for machine guards. 1. (vi) Wherever flywheels are above working areas, guards shall be installed having sufficient strength to hold the weight of the flywheel in the event of a shaft or wheel mounting failure. (ix) Diamond wheels, except certain vitrified diamond wheels. (2) All knives and cutting heads of woodworking machines shall be kept sharp, properly adjusted, and firmly secured. The validation organization shall demonstrate competence and experience in either power press design, manufacture or use, or testing, quality control or certification/validation of equipment comparable to power presses and associated control systems. (2) Type 2 cylinder wheels means wheels having diameter, wheel thickness, and rim thickness dimensions. c. The applicant shall provide information demonstrating that it and any validating laboratory utilized meet the program requirements set forth in section III of this appendix. b. 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. Sec. The exception in paragraph (b)(7)(xi) of this section for controls manufactured and installed before August 31, 1971, is not applicable under this paragraph (c)(5). 1910.169 Air receivers. The requirements of this paragraph are also applicable to sliding cutoff saws mounted above the table. Similarity analysis should not be accepted when the internal and external stresses on the item being certified/validated are not defined. (iv) single strand V-belts, the width of which is thirteen thirty-seconds (1332) inch or less. Click on the image to download the training you need, and they will be automatically downloaded. user convenience only and is not intended to alter agency intent (11) Off-hand grinding means the grinding of any material or part which is held in the operator's hand. 1910.243 Guarding of portable powered tools. All sprocket wheels and chains shall be enclosed unless they are more than seven (7) feet above the floor or platform. Standard conditions shall be secured by the use of the following materials. A slide is also called a ram, plunger, or platen. The removal of a hand from any control button shall cause the slide to stop. See paragraph (b) of 1910.215. There are other general safety precautions which should be followed by everyone even if they dont work directly with conveyors. In addition, when unthreaded hole wheels are specified, the inside flat, K dimension, must be large enough to accommodate a suitable flange. 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. 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. a. The clearance line marks the distance required to prevent contact between guard and moving parts. In all other industries, wood guards shall not be used. (1) Veneer slicer knives shall be guarded to prevent accidental contact with knife edge, at both front and rear. Mills and calenders in the rubber and plastics industries. (i) Every point of operation guard shall meet the following design, construction, application, and adjustment requirements: (a) It shall prevent entry of hands or fingers into the point of operation by reaching through, over, under or around the guard; (b) It shall conform to the maximum permissible openings of Table O-10; (c) It shall, in itself, create no pinch point between the guard and moving machine parts; (d) It shall utilize fasteners not readily removable by operator, so as to minimize the possibility of misuse or removal of essential parts; (e) It shall facilitate its inspection, and. 1910.134 Respiratory protection. (3) Scrap handling. b. (ii) The inside diameter of the band shall not be more than 1 inch larger than the outside diameter of the wheel, and shall be mounted as nearly concentric with the wheel as practicable. A report shall be made of each field inspection. (9) Continuous means uninterrupted multiple strokes of the slide without intervening stops (or other clutch control action) at the end of individual strokes. 6. 1910.3 Petitions for the issuance, amendment, or repeal of a standard. (8) Die handling. (i) A main power disconnect switch capable of being locked only in the Off position shall be provided with every power press control system. Shafting under bench machines shall be enclosed by a stationary casing, or by a trough at sides and top or sides and bottom, as location requires. 1910.1047 Ethylene oxide. 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. ( 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. 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. (1) Machine guarding. Filing office location. 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. 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. (A) The manufacturer's recommended test procedures for checking operation of the presence sensing device.