An OSHA catwalk serviced by a stairway is a type of stair landing. The official, published CFR, is updated annually and available below under from the floor or platform may be guarded with a disk covering the spokes. 1910.1015 4-Dimethylaminoazobenzene. (e) Trip and emergency switches. 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. If unitized tooling is used, the opening between the top of the punch holder and the face of the slide, or striking pad, shall be safeguarded in accordance with the requirements of paragraph (c) of this section. Publication. above floor level. FAR). Subpart O - Machinery and Machine Guarding. 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. (C) The operation, function and performance of the PSDI mode. Diamond and reinforced wheels are included. (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. 1910.241 Definitions. (v) All clutch/brake control electrical circuits shall be protected against the possibility of an accidental ground in the control circuit causing false operation of the press. (66) Certification/validation and certify/validate means the combined process of certification and validation. Upsetters shall be provided with a means for locking out the power at its entry point to the machine and rendering its cycling controls inoperable. (C) Maintain a certification record of each inspection, and each maintenance and repair task performed, under the general component of the inspection program that includes the date of the inspection, maintenance, or repair work, the signature of the person who performed the inspection, maintenance, or repair work, and the serial number, or other identifier, of the power press inspected, maintained, and repaired. This trimming operation can also be done cold, as can coining, a product sizing operation. (iv) All a.c. control circuits and solenoid value coils shall be powered by not more than a nominal 120-volt a.c. supply obtained from a transformer with an isolated secondary. d. When one year has elapsed since the installation certification/validation or the last recertification/revalidation. Acceptable design features shall demonstrate, in the following order or precedence, that: (1) No single failure points may cause injury; or. In the second stage, the OSHA-recognized third-party validation organization validates or revalidates that the PSDI safety system installation meets the requirements of 29 CFR 1910.217 (a) through (h) and this appendix A and the employer's certification, by reviewing that the PSDI safety system has been certified; the employer's certification, designs and tests, if any; the installation, operation, maintenance and training; and by performing any additional tests and reviews which the validation organization believes is necessary. 653, 655, 657; Secretary of Labor's Order No. (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. 1910.39 Fire prevention plans. These tests shall specify the acceptable tolerance band sufficient to assure that tolerance build-up will not render the safety distance unsafe. (4) Any automatic cutoff saw that strokes continuously without the operator being able to control each stroke shall not be used. This subparagraph does not apply to manually operated sprockets. If the conveyor runs at head height or carries material hung from hooks, workers in the area should remain alert to possible danger and measures should be taken to prevent workers from being accidentally struck by moving material. (iii) Toeboards shall be four (4) inches or more in height, of wood, metal, or of metal grill not exceeding one (1) inch mesh. 1. (32) Guard means a barrier that prevents entry of the operator's hands or fingers into the point of operation. The application shall be filed with: PSDI Certification/Validation Program, Office of Variance Determination, Occupational Safety and Health Administration, U.S. Department of Labor, Room N3653, 200 Constitution Avenue, NW., Washington, DC 20210. b. 1910.183 Helicopters. (1) Dull, badly set, improperly filed, or improperly tensioned saws shall be immediately removed from service, before they begin to cause the material to stick, jam, or kick back when it is fed to the saw at normal speed. 1910.242 Hand and portable powered tools and equipment, general. (9) All belts, pulleys, gears, shafts, and moving parts shall be guarded in accordance with the specific requirements of 1910.219. to 16,5 S.F.P.M.1. The assumptions made during the analysis should be clearly stated and a description of the effects of these assumptions on the conclusions and limits should be included. Calculating Safe Mounting Distances for Safeguards | EHS Today (ii) If the single-stroke mechanism is dependent upon spring action, the spring(s) shall be of the compression type, operating on a rod or guided within a hole or tube, and designed to prevent interleaving of the spring coils in event of breakage. 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. This does not apply to constant pressure controls used only for setup purposes. Conveyor Safety When used incorrectly, they can be dangerous. OSHA Conveyor Standards | PDF | Safety | Transmission (Mechanics) - Scribd 1910.123 Dipping and coating operations: Coverage and definitions. 14, 1988]. (4) Lathes used for turning long pieces of wood stock held only between the two centers shall be equipped with long curved guards extending over the tops of the lathes in order to prevent the work pieces from being thrown out of the machines if they should become loose. (eg: (v) Two-hand controls for single stroke shall conform to the following requirements: (a) Each hand control shall be protected against unintended operation and arranged by design, construction, and/or separation so that the concurrent use of both hands is required to trip the press. (52) Stop control means an operator control designed to immediately deactivate the clutch control and activate the brake to stop slide motion. (vii) Reactivation of PSDI operation following deactivation of the PSDI mode from any other cause, such as activation of the red color stop control required by paragraph (b)(7)(ii) of this section, interruption of the presence sensing field, opening of an interlock, or reselection of the number of sensing field interruptions/withdrawals required to cycle the press, shall require resetting of the set-up/reset means. 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. Work rests shall be kept adjusted closely to the wheel with a maximum opening of one-eighth inch to prevent the work from being jammed between the wheel and the rest, which may cause wheel breakage. 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. 1910.268 Telecommunications. Minor modifications not affecting the safety of the system may be made by the manufacturer without revalidation. 1910.1001 Asbestos. (2) Cold trimming presses. The fourth regulation in OSHA standard 1910.178(g) requires a "conveyor, overhead hoist, or equivalent material handling equipment" to assist workers in moving forklift batteries. (2) Hydraulic forging presses. If made of wood, the posts shall be two by four (2 4) inches or larger. 1910.94 Ventilation. (2) The report shall include the following information: (i) Employer's name, address and location of the workplace (establishment). Table O-8 - Minimum Dimensions for Straight Flanges Used as Wheel Sleeves for Precision Grinding Only. The manufacturer shall design a test(s) to establish the hand tool extension diameters allowed for variations in minimum object sensitivity response. The validation organization's laboratory (which organizationally may be a part of the third-party validation organization): 1. Every steam or airhammer shall have a safety cylinder head to act as a cushion if the rod should break or pullout of the ram. It shall be readily accessible and operate whether pushed or pulled. When more than one wheel is mounted between a single set of flanges, wheels may be cemented together or separated by specially designed spacers. (A) A check shall be performed using the test rod according to the presence sensing device manufacturer's instructions to determine that the presence sensing device used for PSDI is operational. (A) Where presses that have slide counterbalance systems are used in the PSDI mode, the counterbalance system shall also meet the requirements of paragraph (b)(9) of this section. (8) Surface feet per minute (s.f.p.m.) f. The instrument used to measure reaction time shall be calibrated to be accurate to within 0.001 second. (2) Modification. (vii) Means used to actuate press stroke (foot trip, foot control, hand trip, hand control, or other). (5) Excluded machines. (A) Presence sensing devices used as supplemental safeguarding shall not initiate a press stroke, and shall conform to the requirements of paragraph (c)(3)(iii) and other applicable provisions of this section, except that the safety distance shall comply with paragraph (h)(9)(v) of this section. (5) Changing dies. Gears. This monitor shall stop slide motion and prevent successive press strokes if decoupling occurs, or if the monitor itself fails. (4) Openings for oiling. The dates of the period of recognition will be stated in the recognition letter. (i) The clutch shall release and the brake shall be applied when the external clutch engaging means is removed, deactivated, or deenergized. 1910.1 Purpose and scope. 2. Control elements shall be checked for correct status after power on and before the initial PSDI stroke. Unless the distance to the nearest fixed pulley, clutch, or hanger exceeds the width of the belt used, a guide shall be provided to prevent the belt from leaving the pulley on the side where insufficient clearance exists. The Electronic Code of Federal Regulations (eCFR) is a continuously updated online version of the CFR. 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. (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. (58) Unitized tooling means a type of die in which the upper and lower members are incorporated into a selfcontained unit so arranged as to hold the die members in alignment. (ii) The ram shall be blocked with a material the strength of which shall meet or exceed the specifications or dimensions shown in Table O-11. Validation for Design Certification/Validation. (2) Shutoff valve. (n) Planing, molding, sticking, and matching machines. The cables shall not be more than 72 inches above the level on which the operator stands. (C) The air pressure supply for clutch/brake valves on machines used in the PSDI mode shall be regulated to pressures less than or equal to the air pressure used when making the stop time measurements required by paragraph (h)(2)(ii) of this section. Equip.) Pulleys with cracks, or pieces broken out of rims, shall not be used. Subpart O: Machinery and Machine Guarding, OSHA 1910 General - UpCodes 2. (ii) A pad with a nonslip contact area shall be firmly attached to the pedal. The clearance between the edge of the rear table and the cutter head shall be not more than one-eighth inch. The guard shall effectively keep the operator's hand from coming in contact with the revolving knives. (48) Safety block means a prop that, when inserted between the upper and lower dies or between the bolster plate and the face of the slide, prevents the slide from falling of its own deadweight. 1910.215 Abrasive wheel machinery. Background and more details are available in the Showing adjustable tongue giving required angular protection for all sizes of wheel used. When frequent oiling must be done, openings with hinged or sliding self-closing covers shall be provided. 1910.147 The control of hazardous energy (lockout/tagout). 1 For wheels under 114 inches thick F dimension shall not exceed 40 percent of wheel thickness. Brakes which are the adjustable type shall be adjusted properly before the test. (b) Abrasive discs (inserted nut, inserted washer, and projecting stud type). There are other general safety precautions which should be followed by everyone even if they dont work directly with conveyors. (ii) Unused keyways shall be filled up or covered. Appendix to Subpart E of Part 1910Exit Routes, Emergency Action Plans, and Fire Prevention Plans, Subpart FPowered Platforms, Manlifts, and Vehicle-Mounted Work Platforms. Higher voltages that may be necessary for operation of machine or control mechanisms shall be isolated from any control mechanism handled by the operator, but motor starters with integral Start-Stop buttons may utilize line voltage control. 1910.164 Fire detection systems. a. 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. Emergency Stop Pull-Cords - Machinery Safety 101 a. PART 1910OCCUPATIONAL SAFETY AND HEALTH STANDARDS. Programmable controllers which meet the requirements for controls with internally stored programs stated above shall be permitted only if all logic elements affecting the safety system and point of operation safety are internally stored and protected in such a manner that they cannot be altered or manipulated by the user to an unsafe condition. 1910.502 Healthcare. If cracked, there will be a dead sound and not a clear ring.. All guards shall be rigidly braced every three (3) feet or fractional part of their height to some fixed part of machinery or building structure. (1) Inspection and maintenance records. (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. (3) Bearings shall be kept free from lost motion and shall be well lubricated. 1910.217 Mechanical power presses. 4. 1. Page 1 of 4 | Conveyor Hazards Safety Factsheet: Hazards of Conveyors Conveyors are used to transport materials . (6) Tonnage, stroke, and weight designation. The provision of a spreader in connection with grooving, dadoing, or rabbeting is not required. 1910.219 - Occupational Safety and Health Administration (3) New Design Certification/Validation. The validation organization or the validating laboratory shall own a registered certification/validation mark or logo. (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. 1/1.1 An application may be withdrawn by an applicant, without prejudice, at any time prior to the final decision by the Assistant Secretary in paragraph I.B.8.b. 1910.213 Woodworking machinery requirements. 1. (56) Turnover bar means a bar used in die setting to manually turn the crankshaft of the press. All revolving collars, including split collars, shall be cylindrical, and screws or bolts used in collars shall not project beyond the largest periphery of the collar. (2) The opening in the table shall be kept as small as possible. 2. Cast iron (min. (i) The control system on presses used in the PSDI mode shall meet the applicable requirements of paragraphs (b)(7), (b)(8), (b)(13), and (c)(5) of this section. Prior to use, both the employer and manufacturer must certify that these requirements and all the other applicable requirements of this section are met and these certifications must be validated by an OSHA-recognized third-party validation organization to meet these additional requirements and all the other applicable requirements of paragraphs (a) through (h) and appendix A of this section. (vi) It shall be the responsibility of the employer to ensure the competence of personnel caring for, inspecting, and maintaining power presses equipped for PSDI operation, through initial and periodic training. (ii) Inclined and vertical shafts, particularly inclined idler shafts, shall be securely held in position against endwise thrust. (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. The manufacturer's recommended procedures for maintenance and inspection should be closely followed. (3) Finish and balance. A positive-type lockout device for disconnecting the power to the shear shall be provided. Grinding machines shall be equipped with flanges in accordance with paragraph (c) of this section. If made of wood, the posts shall be two by four (2 x 4) inches or larger. Shall have legal authority to perform the validation of certification; 2. The third-party validation organization, the validating laboratory, and the employees of each shall meet the requirements set forth in this section of this appendix. The midrail may be one by four (1 x 4) inches or more. 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. a. (5) Excluded machinery. (vii) Where presence sensing device location is adjustable, adjustment shall require the use of a special tool available only to authorized persons. The guard shall have openings no larger than one-half (12) inch. (a) When used in press operations requiring more than one operator, separate two hand controls shall be provided for each operator, and shall be designed to require concurrent application of all operators' controls to activate the slide. 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. A separate drafting site See Table O-10. "Employers want to make sure their equipment is safe to operate," says McCullough. 1910.211 Definitions. Die-setting shall not be done in the PSDI mode. Any detected broken or unserviceable springs shall be replaced before the test is conducted. Handling equipment attach points shall be provided on all dies requiring mechanical handling. Subpart GOccupational Health and Environmental Control. Therefore, the wall dimension W takes precedence over the diameter of the recess as an essential intermediate dimension to describe this shape type. (4) Vertical belts. (1) Bite means the nip point between any two inrunning rolls. The validation organization shall in its installation validation, state that in what circumstances, if any, the employer has advance approval for adjustment, when prior oral approval is appropriate and when prior approval must be in writing. In the area of Safety Standards for Conveyors, CEMA defers and refers to the American Society of Mechanical Engineers, Association for Manufacturing Technology, and OSHA to develop broad industry safety standards where they can.. Read below for additional safety information: For all Conveyors the ASME B20 Committee for Conveyors and Related Equipment maintains the National Standard ANSI/ASME . 1910.1008 bis-Chloromethyl ether. Appendix E to Subpart L of Part 1910Test Methods for Protective Clothing, Subpart MCompressed Gas and Compressed Air Equipment. If previous design, history and application are considered to be similar, but not equal to or more exacting than earlier experiences, the additional or partial certification/validation tests should concentrate on the areas of changed or increased requirements. tensile strength 20,000 p.s.i.) (11) Band type guards - general specifications. Mandatory requirements for certification/validation of the PSDI safety system are provided in appendix A and appendix C to this standard. The recognition of any validation organization will be evidenced by a letter of recognition from OSHA. (1) All projecting keys, setscrews, and other projections in revolving parts shall be removed or made flush or guarded by metal cover. Refer to OSHA 1910.132 (Personal Prot. (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. (4) The Assistant Secretary shall review the record, the decision by the administrative law judge, and the exceptions. (33) Die enclosure guard means an enclosure attached to the die shoe or stripper, or both, in a fixed position. All drip cups and pans shall be securely fastened. of this appendix, subject to the possible reinspection exception. Consistency of braking action is enhanced by high brake torque. (7) Driving flange. 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 employer shall provide means for handling scrap from roll feed or random length stock operations. (iii) The ram shall be blocked with a material the strength of which shall meet or exceed the specifications or dimensions shown in Table O-11. 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. 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. 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. 3. When the bearing surfaces become worn, warped, sprung, or damaged they should be trued or refaced. Belt perches. 1910.263 Bakery equipment. Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible. The materials and dimensions specified in this paragraph shall apply to all guards, except horizontal overhead belts, rope, cable, or chain guards more than seven (7) feet above floor, or platform. This subparagraph does not apply to keys or setscrews within gear or sprocket casings or other enclosures, nor to keys, setscrews, or oilcups in hubs of pulleys less than twenty (20) inches in diameter where they are within the plane of the rim of the pulley. Steam or air piping shall conform to the specifications of American National Standard ANSI B31.1.0-1967, Power Piping with Addenda issued before April 28, 1971, which is incorporated by reference as specified in 1910.6. (i) Point of operation is the area on a machine where work is actually performed upon the material being processed. (iv) An interlocked press barrier guard shall be attached to the press frame or bolster and shall be interlocked with the press clutch control so that the clutch cannot be activated unless the guard itself, or the hinged or movable sections of the guard are in position to conform to the requirements of Table O-10. 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. (iii) Special handtools for placing and removing material shall be such as to permit easy handling of material without the operator placing a hand in the danger zone. a. Any person or organization considering itself capable of conducting a PSDI-related third-party validation function may apply for OSHA recognition. The time increase allowed shall be limited to no more than 10 percent of the longest press stopping time measured at the top of the stroke, or 10 milliseconds, whichever is longer. Press brakes, hydraulic and pneumatic power presses, bulldozers, hot bending and hot metal presses, forging presses and hammers, riveting machines and similar types of fastener applicators are excluded from the requirements of this section. (i) The cone belt and pulley shall be equipped with a belt shifter so constructed as to adequately guard the nip point of the belt and pulley. The adjustments shall be made before performing the stopping time measurements required by paragraphs (h)(2)(ii), (h)(5)(iii), and (h)(9)(v) of this section. Demonstration of a thorough inspection of the entire press and PSDI safety system to ascertain that the installation, components and safeguarding have not been changed, modified or tampered with since the installation certification/validation or last recertification/revalidation was made. (3) Each tenoning machine shall have all cutting heads, and saws if used, covered by metal guards. If made of pipe, the post shall be one and one-fourth (114) inches inside diameter, or larger. (x) Foot operated tripping controls, if used, shall be protected so as to prevent operation from falling or moving objects, or from unintended operation by accidental stepping onto the foot control. (36) Adjustable barrier guard means a barrier requiring adjustment for each job or die setup. [Reserved] The failure of a critical component shall necessitate the removal of the safety system from service until it is recertified and revalidated, except recertification by the employer without revalidation is permitted when a non-critical component or subsystem is replaced by one of the same manufacture and design as the original, or determined by the third-party validation organization to be equivalent by similarity analysis, as set forth in appendix A. The procedures shall be based on pertinent OSHA standards and test methods, or other publicly available standards and test methods generally recognized as appropriate in the field, such as national consensus standards or published standards of professional societies or trade associations. contact the publishing agency. If you would like to comment on the current content, please use the 'Content Feedback' button below for instructions on contacting the issuing agency. (7) Die fastening. If made of metal shapes or bars, their section shall be equal in strength to that of one and one-half (112) by one and one-half (112) by three-sixteenths (316) inch angle iron. All contact surfaces of wheels, blotters and flanges shall be flat and free of foreign matter. 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. 1910.1025 Lead. (13) Cutting off wheels means wheels having diameter thickness and hole size dimensions and are subject to all limitations of mounting and use listed for type 1 wheels, the definition in subparagraph (1) of this paragraph and paragraph (d) of 1910.215. For saws with tilting tables or tilting arbors the fence shall be so constructed that it will remain in a line parallel with the saw, regardless of the angle of the saw with the table. (ii) If operating speed does not exceed 8,000 surface feet per minute cast iron safety guards, malleable iron guards or other guards as described in paragraph (b)(10)(iii) of this section shall be used. The regular oilers shall wear tight-fitting clothing. (d) As used in 1910.217, unless the context clearly requires otherwise, the following power press terms shall have the meaning prescribed in this paragraph. (i) Cutting-off wheels, Types 1 and 27A (see paragraphs (c)(1) (ii) and (iii) of this section). In addition, General Industry applications must adhere to OSHA regulations for Ladder Safety 1910.23 (if applicable) and Walking-Working Surfaces 1910.28. Limitation: Hole dimension (H) should not be greater than two-thirds of wheel diameter dimension (D) for precision, cylindrical, centerless, or surface grinding applications. 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. (c) Abrasive discs (inserted nut, inserted washer and projecting stud type). Each reaction time required to calculate the Safety Distance, including the brake monitor setting, shall be documented in separate reaction time tests. When repairing or cleaning a conveyor, all equipment must be locked or blocked and operating controls tagged. 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. (f) Guards shall be used to protect all areas of entry to the point of operation not protected by the presence sensing device.