1. 2 1. walking and working surfaces 2. means of egress (exits, exit markings) 3. occupational...

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MACHINE SHOP SAFETY

Department of Environmental Health & Safety

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1. Walking and Working Surfaces

2. Means of Egress (Exits, Exit Markings)

3. Occupational Health and Environmental Controls (Ventilation, Noise, Radiation)

4. Hazardous Materials (Compressed Gases, Flammable and Combustible Liquids, etc.)

5. Personal Protective Equipment (Eye and Face Protection, Respiratory Protection, etc.)

6. Fire Protection (Portable Fire Extinguishers, etc.)

7. Material Handling and Storage (Powered Industrial Trucks, Cranes)

8. Machinery and Machine Guarding (Mechanical Power Presses, Abrasive Wheels, etc.)

9. Hand and Portable Powered Tools

10. Welding, Cutting, and Brazing

11. Electrical

12. Toxic and Hazardous SubstancesNOTE: Although many shops may not have these particular hazards/issues/concerns many shops may have others not listed. This lesson does not contain information that addresses every shop hazard. It is the supervisor's responsibility to perform a Hazard Assessment to determine existing and predictable hazards. It is highly recommended the shop supervisor or designee contact EH&S for guidance at 480-965-1823 or [email protected]

Machine Shop Safety


TABLE OF CONTENTSSections

mailto:[email protected]

3Department of Environmental Health & Safety

Section 1

Walking and Working Surfaces

HousekeepingShop floors shall be maintained in a sanitary, clean and, so far as possible, a dry condition. Where wet processes are used, drainage shall be provided, and false floors, platforms, mats, or other dry standing places should be provided where practicable.

To facilitate cleaning make sure the floors, working place, and passageway are kept free from protruding nails, splinters, holes, or loose boards.

Machine Shop Safety


Section 1

If mechanical handling equipment is used, sufficient safe clearances shall be allowed for aisles, at loading docks, through doorways and wherever turns or passage must be made.

Aisles and passageways shall be kept clear and in good repairs, with no obstruction across or in aisles that could create a hazard.

Machine Shop Safety


Housekeeping


Section 1

If materials are stored on a mezzanine floor or if the mezzanine is used as office space the mezzanine floor must be load tested and a plate installed indicating theapproved floor loading.

The plates shall not be removed or defaced but, if lost, removed, or defaced, shall be replaced immediately!

Machine Shop Safety


Housekeeping

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Section 2 Machine Shop Safety

Exits and Exits Markings

An exit route must be permanent. Each exit route must be a permanent part of the workshop!

Each exit and exit markings, at a minimum, shall be: Clearly identifiable

Effectively illuminated

Instructed to the occupants

Free from obstructions

For More Information and Guidance Contact The ASU Fire Marshal's Officeat 480-965-1823


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Occupational Health and EnvironmentalControls (Ventilation, Noise)

An exhaust ventilation system for removing contaminated air from a space shall be comprised of two or more of the following elements:

a. enclosure or hood,

b. duct work,

c. dust collecting equipment,

d. exhauster,

e. discharge stack.

For More Information and Guidance Contact ASU EH&S at 480-965-1823


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Occupational Health and EnvironmentalControls (Ventilation, Noise)

ASU has an established (and maintains) an audiometric testing program for all employees whose exposures equal or exceed an 8-hour time-weighted average of 85 decibels.

To determine your sound levels and requirements contact ASU EH&S at 480-965-1823.


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Hazardous Materials(Compressed Gases, Flammable and Combustible Liquids)


Each workshop supervisor shall determine that compressed gas cylinders under their control are in a safe condition to the extent that this can be determined by visual inspection.

All cylinders, at a minimum, shall be:

a. Identifiable as to the type of gas,

b. Secured at the upper half of the cylinder,

c. Capped when not in use.

Incompatible gasses shall not be stored together.

For More Information and Training Contact ASU EH&S at 480-965-1823

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"Flammable liquid" means any liquid having a flashpoint below 100 deg. F. (37.8 deg. C.), except any mixture having components with flashpoints of 100 deg. F. (37.8 deg. C.) or higher, the total of which make up 99 percent or more of the total volume of the mixture.


For More Information and Guidance Contact The ASU Fire Marshal's Office

At 480-965-1823

ALL FLAMMABLE LIQUIDS SHALLBE PROPER STORED, CONTROLLED

AND DISPOSED OF.

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"Combustible liquid" means any liquid having a flashpoint at or above 100 deg. F. (37.8 deg. C.)

For More Information and Guidance Contact The ASU Fire Marshal's Office

At 480-965-1823

ALL COMBUSTIBLE LIQUIDS SHALLBE PROPER STORED, CONTROLLED

AND DISPOSED OF.


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Personal Protective Equipment(PPE)

Protective equipment, including PPE for eyes, face, head, and

extremities, protective clothing, respiratory devices, and protective

shields and barriers, shall be provided, used, and maintained in a

sanitary and reliable condition wherever it is necessary by reason of

hazards of processes

or environment, chemical hazards, radiological

hazards, or mechanical irritants encountered in

a manner capable of causing injury or

impairment in the function of any

part of the body through absorption,

inhalation or physical contact.

Contact ASU EH&S at 480-965-1823 for Assistance With Workshop Hazard Assessments and PPE Determinations.


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Personal Protective Equipment(PPE)

Where spraying operations take place be sure to have the operations evaluated for potential air contaminants, what respiratory PPE

is required and other regulatory requirements!

Nuisance dust masks are not an effective means of respiratory protection where chemicals are used!

Respirator use requires a personal medical evaluation, training and respirator fit testing by a qualified person!

=Department of Environmental Health & Safety

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Fire ProtectionPortable Fire Extinguishers


The workshop shall provide portable fire extinguishers and shall mount, locate and identify them so that they are readily accessible to the users without subjecting the user to possible injury.

The workshop shall not provide or make available in the workshop portable fire extinguishers using carbon tetrachloride or chlorobromomethane extinguishing agents.

The workshop shall assure that portable fire extinguishers are maintained in a fully charged and operable condition and kept in their designated places at all times.

For More Information, Guidance and Training Contact The ASU Fire Marshal's Officeat 480-965-1823

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Material Handling And Storage

Storage of material shall not create a hazard. Bags, containers, bundles, etc., stored in tiers shall be stacked, blocked, interlocked and limited in height so that they are stable and secure against sliding or collapse.

Storage areas shall be kept free from accumulation of materials that constitute hazards from tripping, fire, explosion, or pest harborage.


X

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Material Handling And StorageForklifts , Cranes and Slings

Formal Training Is Required Where Forklifts , Cranes and Slings Are Used!

Contact ASU EH&S at 480-965-1823 for Training


Machines designed

for a fixed location

shall be securely

anchored to

prevent walking

or moving.

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Machine Shop Safety Section 8


Machinery and Machine Guarding

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“…but its old and it came this way!...”

It Still Must Be Guarded!

Examples OfEffective Shop

Made BeltGuards

Internal BeltsInternal Belts

Machine Shop Safety


Section 8


ANY machine part, function, or process which may cause injury must be safeguarded.

WHERE the operation of a machine or accidental contact with it can injure the operator or others in the vicinity, the hazard must be either controlled or eliminated.

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Machine Shop Safety


Section 8


So, one of the first things to do in determining machine guarding is to identify the different hazards associated with various types of machines and equipment

WHERE MECHANICAL HAZARDS OCCUR

• POINT OF OPERATION

is that point where the work is performed.

• ALL PARTS OF THE MACHINE WHICH MOVE, SUCH AS:

flywheels, pulleys, belts, couplings, chains, cranks, gears, etc.

feed mechanisms and auxiliary parts of the machine.

• IN-RUNNING NIP POINTS

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• PREVENT CONTACT - prevent any part of the

worker’s body (i.e., long hair, beard), clothing

or jewelry 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.

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• CREATE NO NEW HAZARDS - 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.

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Machine Shop Safety


Section 8


METHODS OF MACHINE SAFEGUARDING

• GUARDS

Fixed

Interlocked

Adjustable

Self-adjusting

• DEVICES Presence sensing Pullback Restraint Safety controls

(tripwire cable, two-hand control, etc.)

Gates

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Machine Shop Safety


Section 8

HOLDING TOOLS - examples

• USED to place and remove stock in the danger area.

• NOT to be used instead of other machine safeguards,

but as a supplement.

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FIXED GUARDS - examples

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Auto Drill Press

Belt And Pulleys




ADJUSTABLE GUARD

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Provides a barrier

which may be

adjusted to facilitate

a variety of production

operations. GuideAdjustment




SELF-ADJUSTING GUARD

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Provides a barrier which

moves according to the

size of the stock entering

the danger area.




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Woodworking routers are wonderful tools and are safewhen properly guarded and used as shown above!

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Be Sure To Securely Anchor The Lathes !

Lathes are also wonderful tools. Make sure anyone who uses

these tools are properly trained in the safe operation and

maintenance such as, but not limited to, stock guards!…and remember – lathe areas always need constant housekeeping!

Wood LatheMetal Lathe

LOCATION/DISTANCE

• Locate the machine, or its dangerous moving parts,

so that it is not accessible or does not present a hazard to a worker during normal

operation.

• Maintain a safe distance from the danger area.

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Machine Shop Safety


Section 8


TOOL RESTS must be kept

with a maximum opening

of 1/8-inch to prevent

the work from being

jammed between the

wheel and the rest

which may result in

wheel breakage.

1/8”

ABRASIVE WHEEL MACHINERY

Machine Shop Safety


Section 8


ABRASIVE WHEEL MACHINERY

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The distance between the

wheel periphery and

the adjustable tongue

must never exceed

1/4-inch.

1/4”

Ps…never use a wheel that has a damaged or uneven surface!

Machine Shop Safety


Section 8


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Hand And Power Tools


All hand and power tools shall be provided and used in a safemanner in accordance with the manufacturer's specifications.

All users shall be trained in the proper use and care of all power tools used.

X…and always

wear theappropriate

PPE!

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Compressed Air Used For Cleaning

Compressed air shall not be

used for cleaning purposes

except where reduced to less

than 30 p.s.i. and then only

with effective chip guarding

and personal protective

equipment.


Hand And Power Tools


X

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Welding, Cutting and Brazing



Before cutting or welding is permitted, the area shall be

inspected by the individual responsible for authorizing

cutting and welding operations and shall designate

precautions to be followed in

granting authorization to proceed

in the form of a written permit.

Contact The ASU Fire Marshal’s OfficeFor Information and Guidance at

480-965-1823

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Electrical



Electric equipment such as (but not limited to):

Powered Hand Tools

Flexible Cords

Pedestal Equipment

Bench Equipment

…shall be free from recognized hazards that are likely to cause death or serious physical harm to employees.

WHERE REQUIRED ALL ELECTRICAL EQUIPMENT SHALL BE EFFECTIVELY GROUNDED!

NOT GOOD!

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Electrical


Flexible cords and cables shall not be used: As a substitute for the fixed wiring of a structure;

Where run through holes in walls, ceilings, or floors;

Where run through doorways, windows, or similar openings;

Where attached to building surfaces;

Where concealed behind building walls, ceilings, or floors.


X

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Electrical



GFCI

Ground Fault Circuit Interrupters (GFCI)

shall be provided at locations

where the potential for wet

operations are performed/exist.

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The width of working space in front of the electric equipment shall be the

width of the equipment or 762 mm (30 in.), whichever is greater.

Electrical


and

XDepartment of Environmental Health & Safety

Circuit breakers shall clearly

indicate whether they are in

the open (off) or

closed (on) position.

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Toxic and Hazardous Substances


Workshops shall maintain Material Safety Data Sheets (MSDS)for all chemicals in their possession.

Storage and use of all chemicals shall meet the requirements of regulatoryagencies and the manufacturer.

All response to spills/exposures shall be in compliance with requirements provided in the MSDS and ASU’s policiesand procedures.


Contact ASU EH&S For Guidance and Information

at 480-965-1823

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Machine Shop Safety

Thank You For Your Participation!

Click One More Time For Your Free Basic Machine Shop Safety Rules Poster!

…and good luck with the quiz


BASIC MACHINE SHOP SAFETY RULES

Department of Environmental Health And Safety

Always wear personal protective equipment (PPE).

Secure long hair, loose clothing and jewelry.

Use only electrically safe cords and equipment.

& Know the tools/equipment you operate!

Maintain good housekeeping.

Ensure effective machine guarding.

For More Information and GuidancePlease Call ASU EH&S at 480-965-1823

1. 2 1. walking and working surfaces 2. means of egress (exits, exit markings) 3. occupational...

Documents

surfaces housekeeping

exit route

occupational health

noise asu

mezzanine floor

shop hazard

guidance contact asu

obstructions free