(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. Examples of guarding methods are - barrier guards, two-hand tripping devices, electronic safety devices, etc. 1910.1025 Lead. 1910.335 Safeguards for personnel protection. 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. 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. (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. (1) Safety cylinder head. It is recommended that old installations be changed to conform to this rule. (4) Hand feeding tools. Compliance with 1910.217(h)(7). 2. tensile strength 60,000 p.s.i.). Paragraph (f)(1) of this section does not apply to hand-operated gears used only to adjust machine parts and which do not continue to move after hand power is removed. The manufacturer's certification 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. (See Figures O-12 and O-13), (6) Swing frame grinders. Steam hammers shall be provided with a quick closing emergency valve in the admission pipeline at a convenient location. Gears shall be guarded in accordance with one of the following methods: Hand-operated gears. The removal of a hand from any control button shall cause the slide to stop. The analysis reports should identify: (1) The basis for the analysis; (2) the hardware or software items analyzed; (3) conclusions; (4) safety factors; and (5) limit of the analysis. The maximum angular exposure of the grinding wheel periphery and sides for safety guards used on cutting-off machines and on surface grinding machines which employ the wheel periphery shall not exceed 150. 3. If you work for a Federal agency, use this drafting Pulleys, any parts of which are seven (7) feet or less from the floor or working platform, shall be guarded in accordance with the standards specified in paragraphs (m) and (o) of this section. Please do not provide confidential The intent of paragraph (h)(9)(iii) is to prohibit use of mirrors to bend a single light curtain sensing field around corners to cover more than one side of a press. (4) Shot blast. a. (d) The control systems shall be designed to require release of all operators' hand controls before an interrupted stroke can be resumed. The employer shall evaluate and test the PSDI safety system installation, shall submit to the OSHA-recognized third-party validation organization the necessary supporting documentation, and shall recertify that the requirements of 1910.217(a) through (h) and this appendix are being met. All trip and emergency switches shall not be of the automatically resetting type, but shall require manual resetting. The manufacturer or the manufacturer's representative shall certify to and submit to an OSHA-recognized third-party validation organization the documentation necessary to demonstrate that the PSDI safety system design is in full compliance with the requirements of 29 CFR 1910.217(a)-(h) and this appendix A, as applicable, by means of analysis, tests, or combination of both, establishing that the following additional certification/validation requirements are fulfilled. The test shall be considered successful if the stopping time remains within that which is determined by paragraph (h)(9)(v) for the safety distance setting. They shall be designed to provide adequate holding power for all the thicknesses of materials being cut. (10) Air controlling equipment. Cold trimming presses shall be safeguarded in accordance with 1910.217(c). On offhand grinding machines, work rests shall be used to support the work. (3) Guards for horizontal overhead belts. (2) Guard exposure angles. 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. Click on the image to download the training you need, and they will be automatically downloaded. 1910.184 Slings. (4) Where an exhaust system is used, the guard shall form part or all of the exhaust hood and shall be constructed of metal of a thickness not less than that specified in subparagraph (3) of this paragraph. Grinding is always performed on rim face, W dimension. The total system design shall be certified by the manufacturer as complying with all requirements in 29 CFR 1910.217 (a) through (h) and this appendix A. Even though not employing a clutch, direct drives match the operational characteristics of part revolution clutches because the driving power may be disengaged during the stroke of the press. (1) Mills. (2) Saws. (1) Forging means the product of work on metal formed to a desired shape by impact or pressure in hammers, forging machines (upsetters), presses, rolls, and related forming equipment. In overhead silent chain-drive guards where the chain is held from lateral displacement on the sprockets, the side clearances required on drives of twenty (20) inch centers or under shall be not less than one-fourth inch from the nearest moving chain part, and on drives of over twenty (20) inch centers a minimum of one-half inch from the nearest moving chain part. Blanking of the sensing field is not permitted. Where tools are used for feeding, removal of scrap, lubrication of parts, or removal of parts that stick on the die in PSDI operations: (A) The minimum diameter of the tool handle extension shall be greater than the minimum object sensitivity of the presence sensing device(s) used to initiate press strokes; or. (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. 3. Tests which are conducted by the manufacturers of electrical components to establish stress, life, temperature and loading limits must be tests which are in compliance with the provisions of the National Electrical Code. 1910.509Incorporation by reference. 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. (4) The Assistant Secretary shall review the record, the decision by the administrative law judge, and the exceptions. (ii) Type 27 and Type 28 wheels, because of their shape and usage, require specially designed adaptors. (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. (ii) Spring counterbalances when used shall have the capability to hold the slide and its attachments at midstroke, without brake applied. See Table O-10. The test specification and procedure shall be submitted to the validation organization for review and validation prior to the test. a. (iii) Type 27A cutting-off wheels are designed to be mounted by means of flat, not relieved, flanges having matching bearing surfaces and which may be less than one-third but shall not be less than one-fourth the wheel diameter. 3. 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. (12) Pressure vessels. The spreader shall be made of hard tempered steel, or its equivalent, and shall be thinner than the saw kerf. All mechanical power transmission apparatus located in basements, towers, and rooms used exclusively for power transmission equipment shall be guarded in accordance with this section, except that the requirements for safeguarding belts, pulleys, and shafting need not be complied with when the following requirements are met: (i) The basement, tower, or room occupied by transmission equipment is locked against unauthorized entrance. 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. Recording of inspections shall be in the form of a certification record which includes the date the inspection was performed, the signature of the person who performed the inspection and the serial number, or other identifier, of the equipment inspected. (4) Each hand-fed jointer with horizontal cutting head shall have a guard which will cover the section of the head back of the gage or fence. 2. (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. (11) Rivet making machines mean the same as upsetters and boltheaders when producing rivets with stock diameter of 1-inch or more. (2) Calenders. This subparagraph does not apply to manually operated sprockets. The failure shall be detectable by a simple test, or indicated by the control system. In addition, the brake monitor shall be adjusted during installation certification to prevent successive stroking of the press if increases in stopping time cause an increase in the safety distance above that required by paragraph (h)(9)(v) of this section. A means of air lubrication shall be provided when needed. 6. (i) Shafting shall be kept in alignment, free from rust and excess oil or grease. 1910.176 Handling materialsgeneral. In deriving the safety distance required in paragraph (h)(9)(v), all stopping time measurements should be made with clutch/brake air pressure regulated to the press manufacturer's recommended value for full clutch torque capability. Agree to terms and conditions established by OSHA in the grant of recognition on matters such as exchange of data, submission of accident reports, and assistance in studies for improving PSDI or the certification/validation process. A slide is also called a ram, plunger, or platen. This subdivision does not apply to flywheels with solid web centers. (2) Type 2 cylinder wheels means wheels having diameter, wheel thickness, and rim thickness dimensions. (10) Material requirements and minimum dimensions. However,current OSHA regulations on the control of hazardous energy sources (lockout/tagout)[29 CFR 1910.147],and machine guarding [29 CFR Part 1910.212 ] are applicable to these types of equipment. 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. 4. (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. (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. (1) Belts include all power transmission belts, such as flat belts, round belts, V-belts, etc., unless otherwise specified. If workers need to cross over a conveyor, OSHA has specific requirements for both Construction and Marine applications of Conveyor Crossovers. 1910.211 Definitions. (f) As used in 1910.219, unless the context clearly requires otherwise, the following mechanical power-transmission guarding terms shall have the meaning prescribed in this paragraph. After installation of point of operation guards and before a job is released for operation a check should be made to verify that the guard will prevent the operator's hands from reaching the point of operation. Subpart BAdoption and Extension of Established Federal Standards. On both sides of the calender and near each end of the face of the roll, there shall be a cable or wire center cord connected to the safety trip. 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. Part 1910 Previous Next Top Enhanced Content The complete text of this part is too large to display all at once. ), Wherever the nature of the work requires contact with the wheel below the horizontal plane of the spindle, the exposure shall not exceed 125. 1. 1910.111 Storage and handling of anhydrous ammonia. 1910.17 Effective dates. It should also be noted that organic bonded wheels do not emit the same clear metallic ring as do vitrified and silicate wheels. This subparagraph does not apply to manually operated sprockets. Validation for Design Certification/Validation. (iv) Overhead chain and link belt drives are governed by the same rules as overhead horizontal belts and shall be guarded in the same manner as belts. (i) Projecting shaft ends shall present a smooth edge and end and shall not project more than one-half the diameter of the shaft unless guarded by nonrotating caps or safety sleeves. Appendices to Subpart L of Part 1910Note See paragraph (b) of 1910.215. 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. (See Figures O-14 and O-15. 1910.1007 3,-Dichlorobenzidine (and its salts). (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. The unused run of the sanding belt shall be guarded against accidental contact. (ii) All presses shall be installed in such a manner that they remain where they are positioned or they are anchored to foundations sufficient to support them according to applicable engineering standards. 1910.422 Procedures during dive. (9) Continuous means uninterrupted multiple strokes of the slide without intervening stops (or other clutch control action) at the end of individual strokes.
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