The certification record shall be prepared at the completion of training and shall be maintained on file for the duration of the employee's employment. Belt fasteners. (iii) All mechanical power press controls shall incorporate a type of drive motor starter that will disconnect the drive motor from the power source in event of control voltage or power source failure, and require operation of the motor start button to restart the motor when voltage conditions are restored to normal. (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. (3) Machines using full revolution positive clutches. 1910.22 General requirements. 1910.4 Amendments to this part. (8) The practice of inserting wedges between the saw disk and the collar to form what is commonly known as a wobble saw shall not be permitted. (xiii) The clutch/brake control shall automatically deactivate in event of failure of the power or pressure supply for the clutch engaging means. (2) Type 2 cylinder wheels means wheels having diameter, wheel thickness, and rim thickness dimensions. Grinding is always performed on rim face, W dimension. Belts which of necessity must be shifted by hand and belts within seven (7) feet of the floor or working platform which are not guarded in accordance with this section shall not be fastened with metal in any case, nor with any other fastening which by construction or wear will constitute an accident hazard. Each recognized third-party validation organization and its validating laboratories shall: 1. The most recent records shall be made available to OSHA upon request. Installed at front and back of each mill having a 46-inch roll height or over. Stopping distances shall be expressed in inches of surface travel of the roll from the instant the emergency stopping device is actuated. 1910.25 Stairways. The adjustment shall not be made with the wheel in motion. 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. Where the work is applied to the wheel above the horizontal centerline, the exposure of the grinding wheel periphery shall be as small as possible and shall not exceed 60. When the bearing surfaces become worn, warped, sprung, or damaged they should be trued or refaced. The stop control shall override any other control, and reactuation of the clutch shall require use of the operating (tripping) means which has been selected. (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. (3) Training of maintenance personnel. 3. 1910.1012 Ethyleneimine. 2. (vii) Controls for more than one operating station shall be designed to be activated and deactivated in complete sets of two operator's hand controls per operating station by means capable of being supervised by the employer. 1910.11 Scope and purpose. Grade 32510. These guards shall effectively prevent the hands or fingers of the operator from coming in contact with the nip points. The validation organization and the validating laboratory shall be adequately staffed by personnel who are qualified by technical training and/or experience to conduct the validation of the certification of PSDI safety systems. (iii) Stamped to indicate complete die weight when handling equipment may become overloaded. Choosing an item from (4) Belt fasteners. When dies are being changed or maintenance is being performed on the press, the following shall be accomplished: (i) The hydraulic pumps and power apparatus shall be locked out. (This may be through reference to published sources which describe the test methods or procedures used.). (7) Lubrication. (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. Brake design parameters important to PSDI are high torque, low moment of inertia, low air volume (if pneumatic) mechanisms, non-interleaving engagement springs, and structural integrity which is enhanced by over-design. 11. Provision shall be made in both the upper and lower shoes for securely mounting the die to the bolster and slide. (ii) Where explosives, explosive dusts, flammable vapors or flammable liquids exist, the hazard of static sparks from shafting shall be carefully considered. Mines. It should be noted that the sensing device would be by-passed in the inch mode. (12) For all circular saws where conditions are such that there is a possibility of contact with the portion of the saw either beneath or behind the table, that portion of the saw shall be covered with an exhaust hood, or, if no exhaust system is required, with a guard that shall be so arranged as to prevent accidental contact with the saw. Only part revolution type mechanical power presses are approved for PSDI. Nor would it be necessary to repeat these tests in the case of modifications where determined by the manufacturer and validated by the third-party validation organization to be equivalent by similarity analysis. This is in addition to the report of injury required by paragraph (g) of this section; however, a copy of that report may be used for this purpose. Belt shifters, clutches, shippers, poles, perches, and fasteners -. Compliance with 1910.217(h)(9)(x). (1) All portions of the saw blade shall be enclosed or guarded, except for the working portion of the blade between the bottom of the guide rolls and the table. Occupational Safety and Health Administration (OSHA) No current OSHA standards apply specifically to compacting and baling equipment. Guarding of clutches, cutoff couplings, and clutch pulleys -. (iii) Where brake engagement and clutch release is effected by spring action, such spring(s) shall operate in compression on a rod or within a hole or tube, and shall be of non-interleaving design. (2) At the rear ends of frames over which feed conveyors run, sprockets and chains shall be guarded at the sides by plates projecting beyond the periphery of sprockets and the ends of lugs. The validation organization representative shall witness at least one set of tests. 2. (xvii) Controls with internally stored programs (e.g., mechanical, electro-mechanical, or electronic) shall meet the requirements of paragraph (b)(13) of this section, and shall default to a predetermined safe condition in the event of any single failure within the system. (1) Collars. (b) Portable wheels with threaded inserts or projecting studs. 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. It is recommended, however, that no projecting setscrews or oilcups be used in any revolving pulley or part of machinery. The purpose of the certification/validation of safety systems for presence sensing device initiation (PSDI) of mechanical power presses is to ensure that the safety systems are designed, installed, and maintained in accordance with all applicable requirements of 29 CFR 1910.217 (a) through (h) and this appendix A. 1910.304 Wiring design and protection. 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. (3) An adjustable stop shall be provided to prevent the forward travel of the blade beyond the position necessary to complete the cut in repetitive operations. The results shall document the conditions under which the brake and/or clutch will and will not comply with the requirement. (2) Stopping limits for mills. (ix) Barriers shall be fixed to the press frame or bolster to prevent personnel from passing completely through the sensing field, where safety distance or press configuration is such that personnel could pass through the PSDI presence sensing field and assume a position where the point of operation could be accessed without detection by the PSDI presence sensing device. (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. (vii) Means used to actuate press stroke (foot trip, foot control, hand trip, hand control, or other). 1910.1450 Occupational exposure to hazardous chemicals in laboratories. It is recommended that old installations be changed to conform to this rule. (vi) The presence sensing device location shall either be set at each tool change and set-up to provide at least the minimum safety distance, or fixed in location to provide a safety distance greater than or equal to the minimum safety distance for all tooling set-ups which are to be used on that press. (iii) Air counterbalance cylinders shall incorporate means to retain the piston and rod in case of breakage or loosening. (j) Modified Types 6 and 11 wheel (terrazzo) - blotters applied flat side of wheel only. Where the operator feeds or removes parts by placing one or both hands in the point of operation, and a two hand control, presence sensing device, Type B gate or movable barrier (on a part revolution clutch) is used for safeguarding: (i) The employer shall use a control system and a brake monitor which comply with paragraphs (b) (13) and (14) of this section; (ii) The exception in paragraph (b)(7)(v)(d) of this section for two hand controls manufactured and installed before August 31, 1971 is not applicable under this paragraph (c)(5); (iii) 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 valve mechanism, and to inhibit further operation if such failure does occur, where a part revolution clutch is employed. If workers need to cross over a conveyor, OSHA has specific requirements for both Construction and Marine applications of Conveyor Crossovers. 1910.112-1910.113 [Reserved] 1910.119 Process safety management of highly hazardous chemicals. The safety tripping devices shall be located within reach of the operator and the bite. The guard shall automatically adjust itself to cover the unused portion of the head and shall remain in contact with the material at all times. Subpart O: Machinery and Machine Guarding, OSHA 1910 General Industry | UpCodes Subpart O Machinery and Machine Guarding Authority: 29 U.S.C. (1) Safety cylinder head. (ii) Once the PSDI safety system has been certified/validated, adjustment of the brake monitor shall not be done without prior approval of the validation organization for both the brake monitor adjustment and the corresponding adjustment of the safety distance. (iv) Records of the installation certification and validation and the most recent recertification and revalidation shall be maintained for each safety system equipped press by the employer as long as the press is in use. A recognized validation organization may renew its recognition by filing a renewal request at the address in paragraph I.A.3. A safety trip control shall be provided in front and in back of each mill. With an enclosure of sheet, perforated, or expanded metal, or woven wire; With guard rails placed not less than fifteen (15) inches nor more than twenty (20) inches from rim. Integrated test of the press fully equipped to operate in the PSDI mode shall be conducted to establish the total system reaction time. 1. This trimming operation can also be done cold, as can coining, a product sizing operation. (5) Ripping and ploughing shall be against the direction in which the saw turns. Table O-11 - Strength and Dimensions for Wood Ram Props. 1910.39 Fire prevention plans. 1910.426 Mixed-gas diving. 4. (2) Hydraulic forging presses. (3) Cylinder draining. The identified parts, components and subsystems shall be certified by the manufacturer to be able to withstand the functional and operational environments of the PSDI safety system. (53) Stripper means a mechanism or die part for removing the parts or material from the punch. (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. 30, 1984; 51 FR 34561, Sept. 29, 1986; 53 FR 8353, 8358 Mar. 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. If made of wood, the posts shall be two by four (2 x 4) inches or larger. The cleaning chamber shall have doors or guards to protect operators. (iv) Type of safeguard(s) being used (two hand control, two hand trip, pullouts, sweeps, or other). An acceptable method for interlocking supplemental guards as required by paragraph (h)(6)(xiii) would be to incorporate the supplemental guard and the PSDI presence sensing device into a hinged arrangement in which the alignment of the presence sensing device serves, in effect, as the interlock. The guard shall be fastened to the frame carrying the rolls so as to remain in adjustment for any thickness of stock. If it so determines, it shall validate the employer's certification that the PSDI safety system is in full conformance with all requirements of 29 CFR 1910.217(a) through (h) and this appendix A. The requirement in paragraph (h)(3)(i)(C) is intended to prevent degradation in stoping speed from higher air pressure. Side grinding wheel having a diameter, thickness and wall - wheel is mounted on the diameter. Surface Feet Per Minute = 3.1416 diameter in inches r.p.m. 39 FR 23502, June 27, 1974, unless otherwise noted. (21) Die setter means an individual who places or removes dies in or from mechanical power presses, and who, as a part of his duties, makes the necessary adjustments to cause the tooling to function properly and safely. The top rods shall be not more than 72 inches above the level on which the operator stands. (15) Organic wheels means wheels which are bonded by means of an organic material such as resin, rubber, shellac, or other similar bonding agent. 1910.219 - Mechanical power-transmission apparatus. They shall operate readily when pushed or pulled. 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. For compliance with these requirements, the average value of the stopping time, Ts, shall be the arithmetic mean of at least 25 stops for each stop angle initiation measured with the brake and/or clutch unused, 50 percent worn, and 90 percent worn. 1910.103 Hydrogen. This content is from the eCFR and is authoritative but unofficial. 1910.95 Occupational noise exposure. Table O-2 - Exposure Versus Wheel Thickness, Table O-4 - Minimum Dimensions for Straight Unrelieved Flanges for Wheels with Threaded Inserts or Projecting Studs. Machine components shall be designed, secured, or covered to minimize hazards caused by breakage, or loosening and falling or release of mechanical energy (i.e. 1910.309-1910.330 [Reserved], 1910.331 Scope. 2 For wheels under 114 inch thick F dimension shall not exceed 40 percent of wheel thickness. It is the intent of paragraph (h)(7) that control components be provided with inherent design protection against operating stresses and environmental factors affecting safety and reliability. (ii) The vertical clearance in passageways between the floor and power transmission beams, ceiling, or any other objects, is not less than five feet six inches (5 ft. 6 in.). These tests shall specify the acceptable tolerance band sufficient to assure that tolerance build-up will not render the safety distance unsafe. Name of manufacturer and catalog or model number of each subsystem or major component. It would normally be preferable to limit the adjustment of the time required in paragraph (h)(6)(vi) to a maximum of 15 seconds. Subpart BAdoption and Extension of Established Federal Standards. 1910.38 Emergency action plans. 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. (E) The severe consequences that can result if he or she attempts to circumvent or by-pass any of the safeguard or operating functions of the PSDI system.