Machinery Guarding

Why are we here today?• Training objectives

– Explain the general requirements for guarding the hazardous of machines

– Explain safety devices for machinery– Describe precautions to be taken around any

machinery used while on the job or at home

Number of Serious Violations – FY 2007 3

Most Frequently Cited Serious Violations in General Industry

FY 2007

212(a)(1) - O

1200(e)(1) - Z

23(c)(1) - D

212(a)(3)(ii) - O

1200(h)(1) - Z

215(b)(9) - O

147(c)(4)(i) - J

151(c) - K

147(c)(1) - J

305(b)(1) - S

1435

1266

743

704

682

648

615

614

613

555

Stan

dard

& S

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1910

. Machine Guards - General

Eye & Body Flushing Facilities

Point of OperationOpen-Sided Floors

Conductors Entering Cabinets/Boxes/Fittings Protected from Abrasion

Lockout/Tagout - Program

Grinders-Tongue GuardsHazard Communication – Information & Training

Lockout/Tagout - Procedures

Hazard Communication – Written Program

General Requirements

General requirements for machine guards

• Guards shall be attached to machine

• Secured elsewhere if not able to attach to machine

• Shall not cause a accident hazard in itself

• It shall not create a pinch point

Types of Guarding

• Guarding shall be provided to protect the operator from hazards created by:– Point of operation– Ingoing nip points– Rotating parts– Flying chips and sparks

Types of Guarding• Examples of guarding methods are:

– Barrier guards– Electronic safety devices– Two-hand tripping devices

• These are recommended but if is left up to the employer for the best guard for that machine

Table O-10 [In inches]___________________________________________________ | Distance of opening from point | Maximum width of of operation hazard | opening____________________________ |__________________ |

1/2 to 1 1/2 ................. | 1/41 1/2 to 2 1/2 ............... | 3/82 1/2 to 3 1/2 ............... | 1/23 1/2 to 5 1/2 ............... | 5/85 1/2 to 6 1/2 ............... | 3/46 1/2 to 7 1/2 ............... | 7/87 1/2 to 12 1/2 .............. | 1 1/412 1/2 to 15 1/2 ............. | 1 1/215 1/2 to 17 1/2 ............. | 1 7/817 1/2 to 31 1/2 ............. | 2 1/8

____________________________ |__________________

Point of Operation Guarding• Point of operation is the area where work

is actually being performed.

• Point of operation of machines that expose danger shall be guarded

• Hand tools shall be provided to protect a person from placing hands in danger zone

What’s wrong with this picture?

Safety Devices

• Some machines may take more than one means of guarding.

• It shall be that one or more methods be used in protecting the operator.

• Safety devices are used when guards can not be located in the area of the machine.

Safeguarding the point of operation

• Point of operation safety devices :

– Safety trip wired cables

– Gate or movable barrier

– Presence sensing point

– Two handed controls

CPL National Emphasis Program on Amputations

• Identify and reduce workplace hazards likely to cause amputations

• Top five machines that cause amputations are: – Saws, – Shears, – Slicers, – Slitters, and – Presses.

General Discussion on Machinery at work or at home

• Employer responsibility

• Employees responsibility

• Working at home