1 Guards Prevent Access If Infeasible Devices Control Access

2 Requirements of Safeguards n Prevent contact n Secure n Protect from falling objects n Create no new hazards n Create no interference n Allow safe lubrication

3 Where Mechanical Hazards Occur n Point of operation n Power transmission apparatus n Other moving parts –Nip points –Pinch points –Shear points –Rotating parts –Flying parts

4 Training n Description and identification of hazards n How they provide protection n How to use safe guards n When to remove n Protocol when safeguards are missing

5 Methods of Guarding n Guards n Devices n Location/distance n Feed mechanisms n Miscellaneous aids

6 Guards n Barrier to prevent access to danger n Fixed guards n Interlocks n Adjustable n Self-adjusting Stock Exit Stock entering danger zone Transparent insert in front panel

7 Fixed Frame Panel

8 Box Barrier Guard without Inserts

9 Adjustable Panels Rigid - AdjustableFixed - Adjustable

10 Two and Four Panel Barrier Guard Not considered a safeguard. Are used with safeguarding devices such as two-hand trips, presence sensing devices, pullback, or restraints. Designed to protect sides of the point of operation while the front is open for feeding and removing of pieceparts.

11 Three and Five Panel Barrier Guard Are designed to meet point-of-operation requirements. Rear of machine must also be guarded when applying front and side guards.

12 Interlock Safety Switches

13 Devices n Presence-Sensing n Radiofrequency n Electromechanical sensing device n Pullbacks n Restraints n Safety Trip Controls n Two-Hand Controls n Two-Hand Trip n Gates

14 Presence Sensing Device TransmittersReceivers Control Box Interconnecting Cables

15 Arm-Type Device Arms

16 Arm-Type Pullback Pullbacks

17 Overhead-Type Pullback

18 Restraint Device - Arm-Type Restraint

19 Two-Person Overhead Sliding Restraint

20 Light Curtains on Floor Stands Two Operator Stations Barriers Control Box Control Package with Light Curtain Interface or Two-Hand Control

21 Press brake with two-hand control sequence Two-hand Controls Emergency Stop

22 Gate Guards - Type “A” and“B”

23 Location/Distance n Hazard analysis n Hazards not accessible n Walls n Fences n Height n Stock dimension n Operators station

24 Press Safety Distances Distance of Opening from Point of Operation Hazard (inches) Maximum width of opening (inches) 1/2 to 1-1/2 1-1/2 to 2-1/2 2-1/2 to 3-1/2 3-1/2 to 5-1/2 5-1/2 to 6-1/2 6-1/2 to 7-1/2 7-1/2 to 12-1/2 12-/12 to 15-1/2 15-1/2 to 17-1/2 17-1/2 to 31-1/2 1/4 3/8 1/2 5/8 3/4 7/8 1-1/4 1-1/2 1-7/8 2-1/8

25 Press Safety Distances (cont’d) n Once a safe distance is calculated, note the following to right of press. –Date of measurement –Stopping time –Safe distance calculation –Added distance to allow for normal deterioration –Forward most point of operation –Fixed location of safety device/guard

26 Feeding & Injection n Automatic feeding n Semi-automatic feed n Automatic injection n Semi-automatic injection n Robots

27 Robot Safeguarding Station Control Machine Guard Light Curtain Receiver Mirror Light Curtain Transmitter Guard Parts Chute Safety Mat Robot Parts Bin

28 Miscellaneous Aids n Awareness barriers n Shields n Holding tools n Push stick or block

29 OPERATOR SAFETY PRECAUTIONS Handout for Anyone Operating This Machine Before You Operate This Machine You Must Read and Understand These Safety Precaution DANGER NEVER Place Your Hands or Any Part of Your Body in This Machine See Reverse Side for Other Safety Precautions. Signs for Machinery !

30 PELIGRO ARIETE HIDRAULICO Y TROQUEL CIERREN RESULTARA EN LA PERDIDA DE DEDOS O DE MEMBROS SI ESTAN METIDO EN LA MAQUINA NUNCA USW UN PEDAL DE PIE PARA OPERAR ESTA MAQUINA A MENOS QUE SE PROVEE Y MANTIENE UN PROTECTOR DE SEGURIDA PARA EVITAR QUE LAS MANOS U OTRAS PARTES DEL CUERPO ENTREN EN LA MAQUINA. Signs For Machinery ! NO SE DEBE QUITAR O TAPAR ESTE LETRERO. VEA L REVES PARA MAS INSTRUCCIONES.

31 Free-Standing shield used around machines to protect people from flying objects

32 Shield on milling machine

33 Sliding Lathe Shield

34