This valve shall be closed and locked in the off position while the hammer is being adjusted, repaired, or serviced, or when the dies are being changed. (2) Brake means the mechanism used on a mechanical power press to stop and/or hold the crankshaft, either directly or through a gear train, when the clutch is disengaged. (vi) The employer shall notify the OSHA-recognized third-party validation organization within five days of the occurrence of any point of operation injury while a press is used in the PSDI mode. The clearance between the edge of the rear table and the cutter head shall be not more than one-eighth inch. b. 653, 655, 657; Secretary of Labor's Order No. (h) Modified types 6 and 11 wheels (terrazzo). The application shall provide information demonstrating that it and any validating laboratory utilized meet the qualifications set forth in section II of this appendix. (iii) The brake monitor setting shall allow an increase of no more than 10 percent of the longest stopping time for the press, or 10 milliseconds, whichever is longer, measured at the top of the stroke. They shall be designed to provide adequate holding power for all the thicknesses of materials being cut. Appendix C to Subpart I of Part 1910Personal Fall Protection Systems Non-Mandatory Guidelines (iv) The pull-out device shall protect the operator as specified in paragraph (c)(3)(i)(b) of this section, and shall include attachments for each of the operator's hands. If there are no valid requests for a hearing, based on the application, supporting documents, staff recommendation, evidence and public comment, the Assistant Secretary shall issue the final decision (including reasons) of the Department of Labor on whether the applicant has demonstrated by a preponderance of the evidence that it meets the requirements for recognition. Pulleys intended to operate at rim speed in excess of manufacturers normal recommendations shall be specially designed and carefully balanced for the speed at which they are to operate. Where both runs of horizontal belts are seven (7) feet or less from the floor level, the guard shall extend to at least fifteen (15) inches above the belt or to a standard height except that where both runs of a horizontal belt are 42 inches or less from the floor, the belt shall be fully enclosed in accordance with paragraphs (m) and (o) of this section. (See Figures O-14 and O-15. Please do not provide confidential (1) Each swing cutoff saw shall be provided with a hood that will completely enclose the upper half of the saw, the arbor end, and the point of operation at all positions of the saw. Guarding friction drives. Therefore, the wall dimension W takes precedence over the diameter of the recess as an essential intermediate dimension to describe this shape type. All manually operated valves and switches shall be clearly identified and readily accessible. In addition, a permanent label not less than 112 inches by 34 inch shall be affixed to the rear of the guard at approximately the level of the arbor, reading as follows: Danger: Do Not Rip or Plough From This End. In engine rooms a guardrail, preferably with toeboard, may be used instead of the guard required by paragraph (k)(1) of this section, provided such a room is occupied only by engine room attendants. Conveyor Safety - HSI A test report shall be prepared for each PSDI safety system that is tested. Sec. Where panels are fitted with expanded metal or wire mesh the middle rails may be omitted. (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. (i) Where both runs of horizontal belts are seven (7) feet or less from the floor level, the guard shall extend to at least fifteen (15) inches above the belt or to a standard height except that where both runs of a horizontal belt are 42 inches or less from the floor, the belt shall be fully enclosed in accordance with paragraphs (m) and (o) of this section. Compliance with this requirement shall be determined by using the heaviest upper die to be used on the press, and operating at the fastest press speed if there is speed selection. (d) Cylinders, cups, or segmental wheels that are mounted in chucks. (v) A covered container shall be provided to store dross skimmings. 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. (4) of this appendix. (2) The opening in the table shall be kept as small as possible. (4) The Assistant Secretary shall review the record, the decision by the administrative law judge, and the exceptions. (v) The PSDI mode of operation shall be used only for normal production operations. Bearings shall be kept in alignment and properly adjusted. Provision shall be made in both the upper and lower shoes for securely mounting the die to the bolster and slide. Each reaction time required to calculate the Safety Distance, including the brake monitor setting, shall be documented in separate reaction time tests. Shaft couplings shall be so constructed as to present no hazard from bolts, nuts, setscrews, or revolving surfaces. (b) 12-inch diameter wheel, 1,000 revolutions per minute. information or personal data. Reaction time means the time, in seconds, it takes the signal, required to activate/deactivate the system, to travel through the system, measured from the time of signal initiation to the time the function being measured is completed. 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. (iv) There are three general types of flanges: (a) Straight relieved flanges (see Figure O-32); (b) Straight unrelieved flanges (see Figure O-30); (c) Adaptor flanges (see Figures O-33 and O-34); (v) Regardless of flange type used, the wheel shall always be guarded. (v) The employer shall notify the OSHA-recognized third-party validation organization within five days whenever a component or a subsystem of the safety system fails or modifications are made which may affect the safety of the system. This diagram shows the accepted safe openings between the bottom edge of a guard and feed table at various distances from the danger line (point of operation). (iii) Toeboards shall be four (4) inches or more in height, of wood, metal, or of metal grill not exceeding one (1) inch mesh. 1910.28 Duty to have fall protection and falling object protection. (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. b. They shall be continuous, the ends being either riveted, bolted, or welded together in such a manner as to leave the inside free from projections. (iv) Cylinders, cups, or segmental wheels that are mounted in chucks. e-CFR 1910.219 (a) General requirements. 1910.145 Specifications for accident prevention signs and tags. (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. (1) Antirepeat means the part of the clutch/brake control system designed to limit the press to a single stroke if the tripping means is held operated. Full stop or No movement of the slide or ram means when the crankshaft rotation has slowed to two or less revolutions per minute, just before stopping completely. (g) Reports of injuries to employees operating mechanical power presses. Similarity analysis should not be accepted when the internal and external stresses on the item being certified/validated are not defined. Further, each operator shall be provided with a set-up/reset means that meets the requirements of paragraph (h)(6) of this section, and which must be actuated to initiate operation of the press in the PSDI mode. 1. (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).). (3) On applications where injury to the operator might result if motors were to restart after power failures, provision shall be made to prevent machines from automatically restarting upon restoration of power. (i) Both flanges, of any type, between which a wheel is mounted, shall be of the same diameter and have equal bearing surface. (52) Stop control means an operator control designed to immediately deactivate the clutch control and activate the brake to stop slide motion. 1910.12 Construction work. As an added precaution to the requirements in paragraph (h)(2)(iii), brake adjustment locking means should be secured. The explanation and use of the scale shall be documented. (1) General. A slot opening for jack bar will be permitted. All exposed parts of horizontal shafting seven (7) feet or less from floor or working platform, excepting runways used exclusively for oiling, or running adjustments, shall be protected by a stationary casing enclosing shafting completely or by a trough enclosing sides and top or sides and bottom of shafting as location requires. The Type 27 A Wheel is mounted between flat non-relieved flanges of equal bearing surfaces. (1) Each circular resaw shall be guarded by a hood or shield of metal above the saw. (2) Push stick means a narrow strip of wood or other soft material with a notch cut into one end and which is used to push short pieces of material through saws. (1) All projecting keys, setscrews, and other projections in revolving parts shall be removed or made flush or guarded by metal cover. 2. This portion of the guard shall be self-adjusting to raise and lower with the guide. (xi) The control of air-clutch machines shall be designed to prevent a significant increase in the normal stopping time due to a failure within the operating value mechanism, and to inhibit further operation if such failure does occur. The bottom of the guard shall come to within three-eighths inch of a plane formed by bottom or contact face of the feed roll where it touches the stock. (a) 24-inch diameter wheel, 1,000 revolutions per minute. The regulations listed in OSHA 1910.145 cover a variety of aspects of signs and tags. Both types are reinforced, organic bonded wheels having offset hubs which permit side and peripheral grinding operations without interference with the mounting. (4) Shot blast. (5) Unitized tooling. 653, 655, 657; Secretary of Labor's Order No. (60) Brake monitor means a sensor designed, constructed, and arranged to monitor the effectiveness of the press braking system. (1) 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: (i) Flat belts one (1) inch or less in width. The safety guard shall cover the spindle end, nut, and flange projections. 1910.156 Fire brigades. Each recognized third-party validation organization and its validating laboratories shall: 1. The test report shall include the following: a. 3. (ii) furnish and enforce the use of hand tools for freeing and removing stuck work or scrap pieces from the die, so that no employee need reach into the point of operation for such purposes. (2) Belt shippers and shipper poles. (3) Bearings shall be kept free from lost motion and shall be well lubricated. (vii) Where presence sensing device location is adjustable, adjustment shall require the use of a special tool available only to authorized persons. (i) Each continuous line of shafting shall be secured in position against excessive endwise movement. 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. Air controlling equipment shall be protected against foreign material and water entering the pneumatic system of the press. Dimensions of such flanges shall never be less than indicated. 1910.132 General requirements. (3) Guarding vertical and inclined shafting. 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. (2) General requirements for machine guards. (4) Surfacers or planers used in thicknessing multiple pieces of material simultaneously shall be provided with sectional infeed rolls having sufficient yield in the construction of the sections to provide feeding contact pressure on the stock, over the permissible range of variation in stock thickness specified or for which the machine is designed. (15) Pull-out device means a mechanism attached to the operator's hands and connected to the upper die or slide of the press, that is designed, when properly adjusted, to withdraw the operator's hands as the dies close, if the operator's hands are inadvertently within the point of operation. Analysis. (vii) Means used to actuate press stroke (foot trip, foot control, hand trip, hand control, or other). - Occupational Safety and Health Administration, Department of Labor, - Occupational Safety and Health Standards, 1910.214 Cooperage machinery. If no exceptions are filed, this is the final decision of the Department of Labor. Design certification/validation for a new safety system, i.e., a new design or new integration of specifically identified components and subsystems, would entail a single certification/validation which would be applicable to all identical safety systems. 1910.213 Woodworking machinery requirements. Minimum object sensitivity describes the largest acceptable size of the interruption in the sensing field. March 1, 2022 | Occupational Safety and Health Administration Antirepeat requires release of all tripping mechanisms before another stroke can be initiated. (4) Hangers. Any press whose safety system has not been recertified and revalidated within the preceding 12 months shall be removed from service in the PSDI mode until the safety system is recertified and revalidated. Pulleys with cracks, or pieces broken out of rims, shall not be used. Where any portion of the train of gears guarded by a band guard is less than six (6) feet from the floor a disk guard or a complete enclosure to the height of six (6) feet shall be required. 1910.97 Nonionizing radiation. 1. The dates of the period of recognition will be stated in the recognition letter. Gears shall be guarded in accordance with one of the following methods: Hand-operated gears. Search & Navigation (iii) Air-lift hammers shall be provided with two drain cocks: one on main head cylinder, and one on clamp cylinder. To accomplish this, the machine spindle shall be made to nominal (standard) size plus zero minus .002 inch, and the wheel hole shall be made suitably oversize to assure safety clearance under the conditions of operating heat and pressure. (2) Vertical and inclined belts (paragraphs (e) (3) and (4) of this section) if not more than two and one-half (212) 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. Conveyor power transmission equipment shall be guarded in accordance with ANSI B20.1-1957, Safety Code for Conveyors, Cableways, and Related Equipment, which is incorporated by reference as specified in 1910.6. (e) The safety distance (Ds) from the sensing field to the point of operation shall be greater than the distance determined by the following formula: Ds = minimum safety distance (inches); 63 inches/second = hand speed constant; Ts = stopping time of the press measured at approximately 90 position of crankshaft rotation (seconds). (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. (ii) The employer shall certify that employees have been trained by preparing a certification record which includes the identity of the person trained, the signature of the employer or the person who conducted the training, and the date the training was completed. (1) General requirements. Industrial/MRO/Safety; Safety & Security; Personal Protective Equipment (PPE) . 1910.243 Guarding of portable powered tools. If cracked, there will be a dead sound and not a clear ring.. The manufacturer shall evaluate and certify, and the OSHA-recognized third-party validation organization shall validate, the design and operation of the safety system by determining conformance with the following: a. (9) Flanges means collars, discs or plates between which wheels are mounted and are referred to as adaptor, sleeve, or back up type. (i) All hammers shall be positioned or installed in such a manner that they remain on or are anchored to foundations sufficient to support them according to applicable engineering standards. (1) Billet shears. Based on this, the Assistant Secretary shall issue the final decision (including reasons) of the Department of Labor stating whether the applicant has demonstrated by a preponderance of evidence that it meets the requirements for recognition. 1910.24 Step bolts and manhole steps. (13) Gate or movable barrier device means a movable barrier arranged to enclose the point of operation before the press stroke can be started. Hangers shall be inspected to make certain that all supporting bolts and screws are tight and that supports of hanger boxes are adjusted properly. (D) The requirements for hand tools that may be used in the PSDI mode. (4) Reconstruction and modification. (ii) Inclined and vertical shafts, particularly inclined idler shafts, shall be securely held in position against endwise thrust. The validation organization's validating laboratory shall have available all testing facilities and necessary test and inspection equipment relevant to the validation of the certification of PSDI safety systems, installations and operations. The cleaning chamber shall have doors or guards to protect operators. Expanded metal, sheet or perforated metal, and wire mesh shall be securely fastened to frame. Where two or more knives are used in one head, they shall be properly balanced. (1) Collars. (4) Exposed to contact means that the location of an object is such that a person is likely to come into contact with it and be injured. 1910.66 Powered platforms for building maintenance. (ii) The PSDI mode shall not be used for die setting or set-up. A sound and undamaged wheel will give a clear metallic tone. Compliance with 1910.217(h)(9)(iv). Identification and description of test methods or procedures used. 4. The safety system provision continues the concept of paragraph (b)(13) that the probability of two independent failures in the length of time required to make one press cycle is so remote as to be a negligible risk factor in the total array of equipment and human factors. 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. (1) Keys. Rivet making with less than 1-inch diameter is usually a cold forging operation, and therefore not included in this subpart. Paragraph (h)(6)(xv) of the standard requires that the control system have provisions for an inch operating means; that die-setting not be done in the PSDI mode; and that production not be done in the inch mode. Where explosives, explosive dusts, flammable vapors or flammable liquids exist, the hazard of static sparks from shafting shall be carefully considered. 1910.18 Changes in established Federal standards. OSHA Regulations on Long Hair Around Machinery - Career Trend 1910.423 Post-dive procedures. The outside periphery of the enclosure shall be solid. (ii) Air-lift hammers shall have an air shutoff valve as required in paragraph (d)(2) of this section. Installed in the front and in the back of each mill and located within 2 inches of a vertical plane tangent to the front and rear rolls. (13) Control reliability. When required by paragraph (c)(5) of this section, the brake monitor shall meet the following requirements: (i) Be so constructed as to automatically prevent the activation of a successive stroke if the stopping time or braking distance deteriorates to a point where the safety distance being utilized does not meet the requirements set forth in paragraph (c)(3)(iii)(e) or (c)(3)(vii)(c) of this section. The certification/validation report shall be signed by the Administrative Director and the Technical Director.