eCFR :: 29 CFR Part 1910 -- Occupational Safety and Health Standards 10. 1910.1008 bis-Chloromethyl ether. (i) A two-hand trip shall have the individual operator's hand controls protected against unintentional operation and have the individual operator's hand controls arranged by design and construction and/or separation to require the use of both hands to trip the press and use a control arrangement requiring concurrent operation of the individual operator's hand controls. The failure shall be indicated by the system. Part 1910 Previous Next Top Enhanced Content The complete text of this part is too large to display all at once. The requirements of paragraph (f)(1) of this section shall also apply to hot trimming presses. 1910.212 General requirements for all machines. 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. Where prong anchor or cupback bushing are used, this footnote does not apply. 1910.166-1910.168 [Reserved] Broken pulleys. Decreasing manual material handling also lessens the chance of injury to a workers back and hands. If a stairway accesses the catwalk, the width requirements depend on the width of the stairway that serves it. (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. Engine rooms. and 2. for the combined position. 4. 1910.1050 Methylenedianiline. (e) Trip and emergency switches. (4) Gravity hammers mean a class of forging hammer wherein energy for forging is obtained by the mass and velocity of a freely falling ram and the attached upper die. (56) Turnover bar means a bar used in die setting to manually turn the crankshaft of the press. 1910.212(a)(1) 1910.269 Electric power generation, transmission, and distribution. The failure shall be detectable by a simple test, or indicated by the control system. (ii) The requirement of paragraph (c)(1)(i) of this section shall not apply when the point of operation opening is one-fourth inch or less. (2) Each hand-fed circular ripsaw shall be furnished with a spreader to prevent material from squeezing the saw or being thrown back on the operator. All power-transmission equipment shall be inspected at intervals not exceeding 60 days and be kept in good working condition at all times. C. Analyses may be used for certification/validation when existing data are available or when test is not feasible. All trip and emergency switches shall not be of the automatically resetting type, but shall require manual resetting. (2) The opening in the table shall be kept as small as possible. 1910.265 Sawmills. (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. (ii) Under the directed component of the inspection program, the employer shall: (A) Inspect and test each press on a regular basis at least once a week to determine the condition of the clutch/brake mechanism, antirepeat feature, and single-stroke mechanism; (B) Perform and complete necessary maintenance or repair, or both, on the clutch/brake mechanism, antirepeat feature, and single-stroke mechanism before operating the press; and. 6. Subpart BAdoption and Extension of Established Federal Standards. 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. The sides of the trough shall come within at least six (6) inches of the underside of table, or if shafting is located near floor within six (6) inches of floor. (1) Boltheading. The upper-wheel guard shall be made to conform to the travel of the saw on the wheel. (ix) A scale guard of substantial construction shall be provided at the back of every press, so arranged as to stop flying scale. 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. (i) Machines using full revolution clutches shall incorporate a single-stroke mechanism. Where two or more knives are used in one head, they shall be properly balanced. (iii) Suitable reinforcement shall be provided for the ceiling rafters or overhead floor beams, where such is necessary, to sustain safely the weight and stress likely to be imposed by the guard. 12-71 (36 FR 8754), 8-76 (41 FR 25059), 9-83 (48 FR 35736), 1-90 (55 FR 9033), 5-2002 (67 FR 65008), or 1-2012 (77 FR 3912), as applicable; 20 CFR part 1911. 1910.425 Surface-supplied air diving. Surface Feet per minute .262 12 1,000 = 3,144 s.f.p.m. (pounds per square inch) or greater. (65) Validation or validate means for PSDI safety systems that an OSHA recognized third-party validation organization: (i) For design certification/validation has reviewed the manufacturer's certification that the PSDI safety system meets the requirements of 1910.217 (a) through (h) and appendix A and the underlying tests and analyses performed by the manufacturer, has performed additional tests and analyses which may be required by 1910.217 (a) through (h) and appendix A, and concludes that the requirements of 1910.217 (a) through (h) and appendix A have been met; and. c. Its employees are secure from discharge resulting from pressures from manufacturers, suppliers, vendors, employers or employee representatives. (3) Tail rods or extension piston rods. (7) Feeder attachments shall have the feed rolls or other moving parts so covered or guarded as to protect the operator from hazardous points. This content is from the eCFR and may include recent changes applied to the CFR. means the distance in feet any one abrasive grain on the peripheral surface of a grinding wheel travels in 1 minute. (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. Please do not provide confidential Tongs shall be of sufficient length to clear the body of the worker in case of kickback, and shall not have sharp handle ends. (vi) Equipment shall be kept clean, particularly from accumulations of yellow lead oxide. (3) Steam hammers mean a type of drop hammer where the ram is raised for each stroke by a double-action steam cylinder and the energy delivered to the workpiece is supplied by the velocity and weight of the ram and attached upper die driven downward by steam pressure. (1) Hot trimming presses. Similarity analysis should not be accepted when the internal and external stresses on the item being certified/validated are not defined. The spreader shall be slightly thinner than the saw kerf and slightly thicker than the saw disk. Die-setting and maintenance procedures shall comply with paragraphs (a) through (g) of this section, and shall not be done in the PSDI mode. (vii) The two hand control device shall protect the operator as specified in paragraph (c)(3)(i)(e) of this section. 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. Other Safety Resources - CEMA Wheels bonded with clay, glass, porcelain or related ceramic materials are characterized as vitrified bonded wheels. Any detected broken or unserviceable springs shall be replaced before the test is conducted. 1910.244 Other portable tools and equipment. 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. The use of belt poles as substitutes for mechanical shifters is not recommended. If there is a valid request for a hearing pursuant to paragraph I.B.7.b. Use of a brake monitor does not eliminate the need for periodic brake inspection and maintenance to reduce the possibility of catastrophic failures. Such stresses shall not so affect the control system as to cause unsafe operation. (i) Standard conditions shall be secured by the use of the following materials. (4) This section covers the principal features with which power transmission safeguards shall comply. (16) Sweep device means a single or double arm (rod) attached to the upper die or slide of the press and designed to move the operator's hands to a safe position as the dies close, if the operator's hands are inadvertently within the point of operation. Workplace Violence. Blotters shall be used in accordance with paragraph (c)(6) of this section. Handling equipment attach points shall be provided on all dies requiring mechanical handling. It is recommended that old installations be changed to conform to this rule. 1910.1052 Methylene chloride. (iii) If two-hand trip systems are used on multiple operator presses, each operator shall have a separate set of controls. A recognized validation organization may change a test method of the PSDI safety system certification/validation program by notifying the Assistant Secretary of the change, certifying that the revised method will be at least as effective as the prior method, and providing the supporting data upon which its conclusions are based. Friction brakes provided for stopping or holding a slide movement shall be inherently self-engaging by requiring power or force from an external source to cause disengagement. Bolts, nuts, and setscrews will, however, be permitted where they are covered with safety sleeves or where they are used parallel with the shafting and are countersunk or else do not extend beyond the flange of the coupling. Control components shall be selected, constructed, and connected together in such a way as to withstand expected operational and environmental stresses, at least including those outlined in appendix A. 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.
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