1. 11006115 Copyright  Business & Legal Reports, Inc. Machine Guarding 29 CFR 1910.211 to 1910.219 Occupational Health and Safety Program

2. 11006115 Copyright  Business & Legal Reports, Inc. Basic Standard Any machine part, function, or process that may cause injury must be safeguarded.

3. 11006115 Copyright  Business & Legal Reports, Inc. Regulatory Requirements Regulatory requirements found in 29 CFR 1910, Subpart O. Applies to specific types of equipment. Delineates general requirements.

4. 11006115 Copyright  Business & Legal Reports, Inc. Where Mechanical Hazards Occur The point of operation. In the power transmission apparatus. Other moving parts.

5. 11006115 Copyright  Business & Legal Reports, Inc. Hazardous Mechanical Motions Rotating Reciprocating Transverse

6. 11006115 Copyright  Business & Legal Reports, Inc. Hazardous Actions Cutting Punching Shearing Bending

7. 11006115 Copyright  Business & Legal Reports, Inc. Types of Rotating Mechanisms Collars Couplings Cams Clutches Flywheels Shaft ends Spindles

8. 11006115 Copyright  Business & Legal Reports, Inc. Nip Points Caused by rotating parts. Causes include: –Parts rotating in opposite directions. –Parts rotating in longitudinal motion (belt & pulley). –Parts rotating close to a fixed part.

9. 11006115 Copyright  Business & Legal Reports, Inc. Types of Reciprocating Motions Back and forth Up and down

10. 11006115 Copyright  Business & Legal Reports, Inc. Types of Transverse Motions Straight and in a continuous line. Examples include two pulleys and a belt.

11. 11006115 Copyright  Business & Legal Reports, Inc. Cutting Actions Include: –Rotating motions –Reciprocating motions –Transverse motions

12. 11006115 Copyright  Business & Legal Reports, Inc. Types of Cutting Mechanisms Band saws Circular saws Boring or drilling machines Lathes Milling machines

13. 11006115 Copyright  Business & Legal Reports, Inc. Types of Punching Actions A ram mechanism –Blanks –Draws –Stamps Used on metal or other materials.

14. 11006115 Copyright  Business & Legal Reports, Inc. Types of Punching Equipment Power presses Iron working equipment

15. 11006115 Copyright  Business & Legal Reports, Inc. Types of Shearing Actions Uses a powered slide or knife. Done to trim or shear metal or other materials.

16. 11006115 Copyright  Business & Legal Reports, Inc. Types of Shearing Equipment Shears that are operated: –Hydraulically –Mechanically –Pneumatically

17. 11006115 Copyright  Business & Legal Reports, Inc. Types of Bending Actions Power is applied to a slide to: –Draw –Stamp Used on metal or other materials.

18. 11006115 Copyright  Business & Legal Reports, Inc. Types of Bending Equipment Power presses Press brakes Tubing benders

19. 11006115 Copyright  Business & Legal Reports, Inc. Requirements for Safeguards Minimum general requirements include: –Prevent contact –Secure –Protect from falling objects –Create no new hazards –Create no interference –Allow for safe lubrication

20. 11006115 Copyright  Business & Legal Reports, Inc. Classifications of Safeguards Guards Devices Location/distance Feeding and ejection methods Miscellaneous aids

21. 11006115 Copyright  Business & Legal Reports, Inc. Types of Guards Fixed Interlocked Adjustable Self-adjusting

22. 11006115 Copyright  Business & Legal Reports, Inc. Types of Devices Presence Sensing –Photoelectrical (optical) –Radio frequency (capacitance) –Electromechanical Pullbacks or Restraints

23. 11006115 Copyright  Business & Legal Reports, Inc. Types of Devices Safety Controls –Safety trip control Pressure-sensitive body bar Safety tripod Safety tripwire cable –Two-hand control –Two-hand trip Gates –Interlocked –Other

24. 11006115 Copyright  Business & Legal Reports, Inc. Location/Distance Makes it virtually impossible to contact moving parts. Separates operators from the equipment. Limited by the available workspace.

25. 11006115 Copyright  Business & Legal Reports, Inc. Feeding and Ejection Methods Automatic feed Semiautomatic feed Automatic ejection Semiautomatic ejection Robot

26. 11006115 Copyright  Business & Legal Reports, Inc. Miscellaneous Aids Awareness barriers Protective shields Hand-feeding tools and holding fixtures

27. 11006115 Copyright  Business & Legal Reports, Inc. Guards Fixed-Provides a barrier. Interlocked-Shuts off or disengages power and prevents starting of machine when guard is open. Adjustable-Provides a barrier which may be adjusted to facilitate a variety of operations. Self Adjusting-Provides a barrier which moves according to the size of the stock entering danger area.

28. 11006115 Copyright  Business & Legal Reports, Inc. Devices Photoelectric (optical)-Machine will not start cycling when the light field is interrupted. Radiofrequency (capacitance)-Machine cycling will not start when the capacitance field is interrupted. Electromechanical-Contact bar or probe travels a predetermined distance between the operator and the danger area. Pullback-As the machine begins to cycle, the operator’s hands are pulled out of the danger area. Restraint (holdback)-Prevents the operator from reaching into the danger area.

29. 11006115 Copyright  Business & Legal Reports, Inc. Location/Distance Machine or its dangerous moving parts must be so positioned that hazardous areas are not accessible or do not present a hazard to a worker during the normal operation of the machine.

30. 11006115 Copyright  Business & Legal Reports, Inc. Feeding and Ejection Methods Automatic Feed-Stock is fed from rolls, indexed by machine mechanism. Semiautomatic Feed-Stock is fed by chutes, movable dies, dial feed, plungers or sliding bolster. Automatic Ejection-Work pieces are ejected by air or mechanical means. Semiautomatic Election-Work pieces are ejected by mechanical means which are initiated by the operator. Robots-Perform work usually done by operator.

31. 11006115 Copyright  Business & Legal Reports, Inc. Example-Rotating Parts Hazards

32. 11006115 Copyright  Business & Legal Reports, Inc. Example-Common Nip Points

33. 11006115 Copyright  Business & Legal Reports, Inc. Example-Dangerous Cutting Actions

34. 11006115 Copyright  Business & Legal Reports, Inc. Example-Guard

35. 11006115 Copyright  Business & Legal Reports, Inc. Example-Guard

36. 11006115 Copyright  Business & Legal Reports, Inc. Thank You For Your Participation Safety is as simple as ABC Always Be Careful