5400 Machine Guarding

1

Do you know why we are here, to talk about how

curly fries were invented?

2

To aid in the

identification of

machine hazards.

Objectives:

To enable you to identify the guard and it’s function

To reduce accidents that may

occur in the workplace

through the use of

machine guards and

other safety devices.

Machine GuardingWarning: Graphic content ahead.

Crushed hands and arms, severed fingers, and blindness are a couple of examples of possible machinery-related injuries.

Safeguards are essential for protecting workers from preventable machinery related injuries.

“They told me I could become anything, so I became ground beef.”

Prevent contact - prevent worker’s body or clothing from contacting hazardous moving parts

Secure - firmly secured to machine and not easily removed Protect from falling objects - ensure that no objects can fall into

moving parts Create no new hazards – guards must not have shear points,

jagged edges or unfinished surfaces Create no interference - must not prevent worker from performing

the job quickly and comfortably Allow safe lubrication - if possible, be able to lubricate the

machine without removing the safeguards

Requirements for Safeguards

Guard: means shielded, fenced, or enclosed by a covers, casings, troughs, spillways or railings, or guarded by position or location.

Purpose: To prevent any part of the body from coming in contact with moving parts of machinery or equipment which could cause injury to personnel.

What is a guard, and what is its purpose?

Fixed Guard: Provides a barrier - a permanent part of the machine, preferable to all other types of

guards and most used.

Adjustable Guard: Provides a barrier

which may be adjusted to

facilitate a variety of production operations.

Self-Adjusting Guard

Provides a barrier which moves

according to the size of the stock entering

the danger area.

Examples of typical guards found in the Maritime Industry.

Safety Jeopardy

1915 1917 Missing Guards

What’s Wrong?

Q $100

Q $300

Q $200 Q $200

Q $300 Q $300Final JeopardyQ $400

Q $100

Q $200

Q $300

Q $400

Q $100 Q $100

Q $200

Q $400

$100 Question - 1915True or False

The maximum angular exposure of a grinding wheel’s side’s shall not

exceed 90 degrees.

$100 Answer - 1915

Safety Jeopardy

False: OSHA 1915.134(e)

The maximum angular exposure of a grinding wheel’s side’s shall not

exceed 180 degrees.

$200 Question - 1915

True or False

Moving parts of machinery in a dry dock must be

guarded.

$200 Answer - 1915

Safety Jeopardy

OSHA 1915.131(d)

True

$300 Question - 1915True or False

Workers must be thoroughly trained by a Shipyard

Competent Person before using powder-actuated

fastening tools.

$300 Answer - 1915

Safety Jeopardy

OSHA 1915.135(c)False: Workers must be thoroughly trained by a competent person (not the Shipyard Competent Person) before using powder-actuated fastening tools.

$400 Question - 1915

True or False:

You can take a guard from an angle grinder and put it

on a buckeye grinder.

$400 Answer - 1915

Safety Jeopardy

False (Not unless specifically stated by the manufacturer.)

$100 Question – 1917

True or False

LOTO on machinery is not required if you are working

alone.

$100 Answer – 1917

Safety Jeopardy

False 1917.151(b)(7)

$200 Question - 1917Multiple Choice

______ Zones on machines, equipment used by employees shall be

guardeda) Contactb) Dangerc) Work d) Grind

$200 Answer - 1917

Safety Jeopardy

OSHA 1917.151(b)

b) Danger

$300 Question – 1917

Multiple Choice:

Grinding wheels shall sit ______ on the spindle.

a) Side waysb) Tautlyc) Freelyd) Loosely

$300 Answer - 1917OSHA 1917.151(g)(5)

c) Freely

Safety Jeopardy

$400 Question - 1917True or False

Machine guarding is not required when, mounted

grinding wheel is 2” (5 cm) and smaller in diameter and used in portable operations.

$400 Answer - 19171917.151(g)(3)(ii)

True

Safety Jeopardy

Lathe

$100 Question – Missing Guard

$100 Answer - Missing Guards

Safety Jeopardy

Adjusting chuck guard

Flying debris

Entanglement

Adjusting debris guard

Lathe

$200 Question – Missing Guards

Vertical Band Saw

Safety Jeopardy

$200 Answer - Missing Guards

Adjustable guard

No adjustable guard on

blade

Vertical Band Saw

Though not in first picture a full enclosure

$300 Question – Missing GuardBlaster

Safety Jeopardy

$300 Answer - Missing Guards

Covered chain and sprocket

Exposed shafts, chains, and sprockets

Blaster

$400 Question – Missing Guards

Plasma Cutter

Safety Jeopardy

$400 Answer - Missing Guards

Install light curtains or fixed barrier with

interlocking gates around cutter

Contact with moving head

of cutter

Plasma Cutter

$100 Question – What’s Wrong

$100 Answer – What’s Wrong

Safety Jeopardy

$200 Question – What’s Wrong

$200 Answer – What’s Wrong”

Safety Jeopardy

Missing Guard

$300 Question - What’s Wrong

$300 Answer – What’s Wrong

Safety Jeopardy

$400 Question – What’s Wrong

How many things are wrong?

$400 Answer – What’s Wrong

Safety Jeopardy

19 issues identified

Lack of Understanding of Machine Guarding Requirements Improper Design or Installation Failure to Consider All Risks Inadequate Controls to Ensure That Guards Are Adjusted &

Maintained Belief That Manufacturer Is Responsible for Machine Guarding

Five Serious Machine Guarding Problems

www.asse.org FEBRUARY 2012 ProfessionalSafety

Always remember having proper guards on machinery and equipment isn’t just a safety hazard but can also affect: Production Finances Injury rate / future contracts Life

Summary