Tm = Increase in the press stopping time at the top of the stroke, in seconds, allowed by the brake monitor for brake wear. (xiii) The Control system shall incorporate interlocks for supplemental guards, if used, which will prevent stroke initiation or will stop a stroke in progress if any supplemental guard fails or is deactivated. Wood guards may be used in the woodworking and chemical industries, in industries where the presence of fumes or where manufacturing conditions would cause the rapid deterioration of metal guards; also in construction work and in locations outdoors where extreme cold or extreme heat make metal guards and railings undesirable. Side grinding wheel having a diameter, thickness and hole with one side straight or flat and the opposite side recessed. OSHA 29 CFR 1910.147 outlines "Alternative Protection Measure" procedures that can result in increased efficiency without compromising the safety of the operation. 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. This checklist covers regulations issued by the U.S. Department of Labor, Occupational Safety and Health Administration (OSHA) under the general industry standard 29 CFR 1910.23. (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. 1910.98 Effective dates. (2) Ambient relative humidity of 99 percent. For full revolution clutch presses with only one engaging point Tm is equal to the time necessary for one and one-half revolutions of the crankshaft. "Employers want to make sure their equipment is safe to operate," says McCullough. A slide is also called a ram, plunger, or platen. (1) Belts include all power transmission belts, such as flat belts, round belts, V-belts, etc., unless otherwise specified. (14) Holdout or restraint device means a mechanism, including attachments for operator's hands, that when anchored and adjusted prevent the operator's hands from entering the point of operation. When a recognized validation organization has filed such a renewal request, its current recognition will not expire until a final decision has been made on the request. Adjustable guard to be used for starting engine or for running adjustment may be provided at the flywheel of gas or oil engines. 1 Flanges shall be of steel, quality SAE 1040 or equivalent, annealed plate, heat treated to R. 25-30. All contact surfaces of wheels, blotters and flanges shall be flat and free of foreign matter. Vertical and inclined belts shall be enclosed by a guard conforming to standards in paragraphs (m) and (o) of this section. These devices shall be long enough to enable a man to reach the full length of the die without placing his hand or arm between the dies. (7) Driving flange. 1910.112-1910.113 [Reserved] 1910.119 Process safety management of highly hazardous chemicals. C. Analyses may be used for certification/validation when existing data are available or when test is not feasible. (2) It is recommended, however, that no projecting setscrews or oilcups be used in any revolving pulley or part of machinery. (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. (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 safety attributes of a certified/validated PSDI safety system are more likely to be maintained if the quality of the system and its parts, components and subsystem is consistently controlled. 4. 1910.177 Servicing multi-piece and single piece rim wheels. (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. 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. Shall have legal authority to perform the validation of certification; 2. In all other industries, wood guards shall not be used. When more than one wheel is mounted between a single set of flanges, wheels may be cemented together or separated by specially designed spacers. 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. Nonmandatory supplementary information and guidelines relating to certification/validation of the PSDI safety system are provided to appendix B to this standard. Where belts are so located as to make it impracticable to carry the guard to wall or ceiling, construction of guard shall be such as to enclose completely the top and bottom runs of belt and the face of pulleys. If the frame of the belt shifter does not adequately guard the nip point of the belt and pulley, the nip point shall be further protected by means of a vertical guard placed in front of the pulley and extending at least to the top of the largest step of the cone. 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. Grinding is performed on the rim face only, dimension W. Cylinder wheels may be plain, plate mounted, inserted nut, or of the projecting stud type. (ii) Straight flanges of the adaptor or sleeve type (Table O-7 and Figures O-33 and O-34) shall be undercut so that there will be no bearing on the sides of the wheel within one-eighth inch of the arbor hole. (3) For the Textile Industry, because of the presence of excessive deposits of lint, which constitute a serious fire hazard, the sides and face sections only of nip-point belt and pulley guards are required, provided the guard shall extend at least six (6) inches beyond the rim of the pulley on the in-running and off-running sides of the belt and at least two (2) inches away from the rim and face of the pulley in all other directions. b. (b) The control system shall be designed to permit an adjustment which will require concurrent pressure from both hands during the die closing portion of the stroke. The guard shall effectively keep the operator's hand from coming in contact with the revolving knives. Certain exceptions are forging hammers made with frame mounted on the anvil; e.g., the smaller, single-frame hammers are usually made with the anvil and frame in one piece. Following a deactivation of PSDI by the timer, the system shall make it necessary to reset the set-up/reset means in order to reactivate the PSDI mode. (v) The route followed by the oiler is protected in such manner as to prevent accident. This requirement does not apply to those elements of the control system which have no effect on the protection against point of operation injuries. They shall operate readily when pushed or pulled. They allow workers to reduce the amount of materials handled manually thereby increasing work capacity and production output. 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. A. Certification/validation of hardware design below the system level should be accomplished by test and/or analysis. (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. a. (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. The employer shall evaluate and test the PSDI system installation, shall submit to the OSHA-recognized third-party validation organization the necessary supporting documentation, and shall certify that the requirements of 1910.217(a) through (h) and this appendix A have been met and that the installation is proper. (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. (B) After a press has been equipped with a safety system whose design has been certified and validated in accordance with paragraph (h)(11)(i) of this section, the safety system installation shall be certified by the employer, and then shall be validated by an OSHA-recognized third-party validation organization to meet all applicable requirements of paragraphs (a) through (h) and appendix A of this section. The maximum angular exposure of the grinding wheel periphery and sides for safety guards used on cylindrical grinding machines shall not exceed 180. Immediately before mounting, all wheels shall be closely inspected and sounded by the user (ring test) to make sure they have not been damaged in transit, storage, or otherwise. 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. 1910.139 [Reserved] (66) Certification/validation and certify/validate means the combined process of certification and validation. Minimum requirements. 1910.138 Hand protection. (13) Control reliability. Pulleys with cracks, or pieces broken out of rims, shall not be used. A copy of the certification/validation report shall be submitted to OSHA within 30 days of its completion. Die-setting and maintenance procedures shall comply with paragraphs (a) through (g) of this section, and shall not be done in the PSDI mode. It shall automatically adjust itself to the thickness of and remain in contact with the material being cut. 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. (i) The operator training required by paragraph (f)(2) of this section shall be provided to the employee before the employee initially operates the press and as needed to maintain competence, but not less than annually thereafter. Minimum requirements for this position are a Bachelor's degree and five years professional experience, at least one of which shall have been in responsible charge of a function in the areas of power press design or manufacture or a broad range of power press use, or in the areas of testing, quality control, or certification/validation of equipment comparable to power presses or their associated control systems. 1910.213 Woodworking machinery requirements. OSHA may revoke its recognition of a validation organization if its program either has failed to continue to satisfy the requirements of this appendix or its letter of recognition, has not been performing the validation functions required by the PSDI standard and appendix A, or has misrepresented itself in its applications. 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. (2) Calenders. 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. Die keys and shims shall be made from a grade of material that will not unduly crack or splinter. Search & Navigation Such mesh or perforated metal shall be not less than 0.037 inch (U.S. Gage No. Preliminary decision by Assistant Secretary. b. This requirement pertains only to those single-stroke, two-hand controls manufactured and installed on or after August 31, 1971. These tests shall specify the acceptable tolerance band sufficient to assure that tolerance build-up will not render the safety distance unsafe. (iii) Air-lift hammers shall be provided with two drain cocks: one on main head cylinder, and one on clamp cylinder. Appendix to Subpart E of Part 1910Exit Routes, Emergency Action Plans, and Fire Prevention Plans, Subpart FPowered Platforms, Manlifts, and Vehicle-Mounted Work Platforms. 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.
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