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Environmental & Facility SAFETY SIGN Overview. IEEE IAS 2000 San Antonio, TX Bob Rafferty - DuPont / Global Services Business / Engineering February 16, 2000. Electrical Safety Workshop. Agenda. Guiding Standards Types of Safety Signs Signal words Message words Symbols Color

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environmental facility safety sign overview

Environmental & Facility SAFETY SIGNOverview

IEEE IAS 2000

San Antonio, TX

Bob Rafferty - DuPont / Global Services Business / Engineering

February 16, 2000

Electrical Safety Workshop

agenda
Agenda
  • Guiding Standards
  • Types of Safety Signs
  • Signal words
  • Message words
  • Symbols
  • Color
  • Examples

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

safety sign definition
Safety Sign - Definition
  • A visual alerting device in the form of a sign, label, decal, placard or other marking which advises the observer of the nature and degree of the potential hazard(s) which can cause an accident. It may also provide other directions to eliminate or reduce the hazard and advise of the probable consequences of no avoiding the hazard.

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

safety signs colors applicable standards
SAFETY SIGNS & COLORSApplicable Standards
  • ANSI Z535.1 - Safety Color Code
  • ANSI Z535.2 - Environmental & Facility Safety Signs
  • ANSI Z535.3 - Criteria for Safety Symbols
  • ANSI Z535.4 - Product Safety Signs and Labels
  • ANSI Z535.5 - Accident Prevention Tags

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

safety signs what has changed
Safety Signs(what has changed)

ANSI Z535 volumes 1 through 5 were revised in 1998. Major changes include:

  • Change in sign format and layout
  • Safety alert and other symbols
  • Signal Words (four that are most important to the electrical community)
  • Quantifying use of signal words

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

categories of safety signs
Categories of Safety Signs
  • Environmental safety sign: Sign or placard in a work or public area that provides safety information about the immediate environment. (will be addressed)
  • Product safety sign: Sign, label, or decal affixed to a product that provides hazard and safety information about that product. (not addressed)

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

classification of safety signs three tier personnel injury hazard classification others
Classification of Safety Signs(three tier personnel injury hazard classification & others)
  • DANGER
  • WARNING
  • CAUTION
  • NOTICE
  • SAFETY INSTRUCTIONS
  • FIRE SAFETY & DIRECTIONAL SIGNS (not discussed)

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

safety sign format normally made up of two or three panels
Safety Sign Format(Normally made up of two or three “Panels”)
  • Signal word panel: Contains signal word. Also contains safety alert symbol for personnel hazards.
  • Message panel: Contains those words relating to: Identification of the hazard, how to avoid the hazard, and/or the probable consequence of not avoiding the hazard.
  • Symbol/Pictorial panel: Contains symbol

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

two panel sign format
Two-panel sign format

Signal Word Panel

Word Message ____________________

_________________________________

_________________________________

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

three panel sign format layout can vary
Three-Panel Sign Format(Layout can vary)

Signal Word Panel

Word message Symbol/Pictorial

Panel

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

safety alert
Safety Alert

!

  • It is used to alert to potential personal injury hazards. Obey all safety messages that follow to avoid possible injury or death.

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

danger signal word panel ansi 535 2
Danger - Signal word panel(ANSI 535.2)
  • DANGER: Imminently hazardous situation which, if not avoided, will result in death or serious injury.

DANGER

!

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

danger alternate signal word panel ansi 535 2 for danger only
Danger - Alternate signal word panel(ANSI 535.2, for Danger only)
  • DANGER: Imminently hazardous situation which, if not avoided, will result in death or serious injury.

DANGER

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

warning signal word panel ansi 53 1 ansi 535 2
Warning - Signal word panel(ANSI 53.1, ANSI 535.2)
  • WARNING: Potentially hazardous situation which, if not avoided, could result in death or serious injury.
  • Alternate (older) black letters, on safety orange truncated triangle, on a black background.

WARNING

!

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

caution signal word panel 1 ansi 53 1 ansi 535 2
Caution - Signal word panel #1(ANSI 53.1, ANSI 535.2)
  • CAUTION: Potentially hazardous situation which, if not avoided, may result in minor or moderate injury.
  • Alternate safety yellow on black background

CAUTION

!

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

caution signal word panel 2 ansi 53 1 ansi 535 2
Caution - Signal word panel #2(ANSI 53.1, ANSI 535.2)
  • Used without the safety alert symbol indicates a potentially hazardous situation which, if not avoided, may result in property damage.

CAUTION

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

notice signal word panel
Notice - Signal word panel
  • NOTICE: Signs used to indicate a statement of company policy or information indirectly related to the safety of personnel or protection of property.

NOTICE

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

general safety signal word panel
General Safety-Signal word panel
  • Indicates general instructions relative to safe work practices, reminders of proper safety procedures, or location of safety equipment.

SAFETY

INSTRUCTIONS

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

word message panel
Word Message Panel
  • Communicates information to an observer on the type of hazard, the consequence of not avoiding the hazard and how to avoid the hazard.
  • Some factors to consider:
    • Can the hazard be inferred by the symbol?
    • Reaction time required to avoid the hazard?
    • Target audiences knowledge of the hazard?

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

formatting the word message use headline style
Formatting the word message(use “headline style”)
  • Omit pronouns (this, that, they) , articles (a, the, an), verbs (is, are, were)
  • Headline style Message examples:

Hazardous voltage inside

Keep out!

Keep access door locked

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

ordering the content of word message example
Ordering the content of word message (example)

Keep OutAvoidance or action Statement

Hazardous

Voltage inside Type of Hazard Statement

Can shock, burnConsequence Statement

or cause death

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

action statement
Action Statement
  • Tells the viewer how to avoid the hazard
  • Statement should be simple, direct and applicable to the hazard
  • Examples:

Keep out! Wear hard hats

Keep away No smoking

Call before you dig

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

hazard description statement
Hazard description statement
  • Identify the hazard in clear simple language
  • Action and consequence can be omitted if obvious (such as “slippery when wet”)
  • Examples:

Hazardous voltage inside

Buried underground cables

More than one source of voltage

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

consequence statement
Consequence statement
  • Tells the viewer in clear, simple language what will happen if the warning is ignored.
  • Examples:
    • Can shock, burn, or cause death
    • Will disrupt electrical service
    • Can irritate skin
    • Can cause serious burns
    • Exposure can cause nausea, and dizziness

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

symbols pictorial panel ansi z535 3 1998
Symbols / pictorial panel(ANSI Z535.3-1998)
  • SYMBOL: Graphic representation intended to covey a message. May represent a hazard, hazardous situation or precaution to avoid a hazard, the result of not avoiding the hazard of any combination of these messages.

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

typical symbol
Typical Symbol
  • Symbols - Recognition by a multi-ethnic, highly mobile, population derived from a multiplicity of social and educational backgrounds, with different reading skills and word comprehension.

Electrical

Hand with wire

Electrical

Body with wire

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

typical symbol cont d
Typical Symbol (cont’d)
  • Other electrical symbols - Use only with supplementary word messages (50 - 83% recognition testing)

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

safety sign color recommended panel color schemes all alternates not shown
Safety Sign Color (recommended panel color schemes, all alternates not shown)

DANGER

Signal word: White letters on a safety red background, safety red exclamation mark

(Alternate): White letters on safety red oval with white outline on black rectangle

Message word : Black or red letters on white background, or white letters on black background

Symbol/pictorial:Black, safety red, or black and safety red on a white background

WARNING

Signal word: Black letters on a safety orange background, safety orange exclamation mark

(Alternate): Black letters within a safety orange truncated diamond on a black background

Message word: Black letters on a white background, or white letters on a black background

Symbol/pictorial: Black symbol on a white background. Alternate safety orange. background

CAUTION

Signal word: Black letters on a safety yellow background, safety yellow exclamation mark

(Alternate): Black letters within a safety orange truncated diamond on a black background

Message word: Black letters on a white background, or white letters on a black background

Symbol/pictorial: Black symbol on a white background. Alternate safety yellow background.

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

danger sign example based on interpretation of ansi z535 1 1997 replaces z53 1 1979
Danger Sign - Example(Based on interpretation of ANSI Z535.1-1997 / replaces Z53.1-1979)
  • Example safety sign with message panel where hazard may not be clearly understood.

Safety Alert symbol (optional with message)

Signal Word (degree

of hazard)

DANGER

!

Hazard statement (can

also be avoidance

statement)

Hazardous Voltage Inside

Consequence hazard

Will cause death or

serious injury

Change “will” to “could”

changes signal word to

“WARNING”.

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

caution sign example
Caution Sign - Example
  • Identify source of hazard where opening the supply disconnect does not remove all sources of hazardous voltages

!

CAUTION

CONTAINS 120Vac FROM

MORE THAN ONE SOURCE

(CONSULT SCHEMATIC (S) ______________ )

CONTAINS 120Vac FROM

MORE THAN ONE SOURCE

(CONSULT SCHEMATIC (S) ______________ )

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

arc flash ppe label
Arc-Flash / PPE Label
  • Example of a PPE label attached to the front of electrical equipment. (based onNFPA 70E-1995)

EQUIPMENT NAME ___________________________________________

POWER SOURCE LOCATION __________________________________

EQUIPMENT RATING ________ VOLT __ PHASE

FLASH HAZARD BOUNDARY _______ inches PPE LEVEL ____

SHOCK HAZARD BOUNDARY:

LIMITED APPROACH ________ inches

RESTRICTED APPROACH ____ inches

PROHIBITIED APPROACH ____ inches

EQUIPMENT NAME ___________________________________________

POWER SOURCE LOCATION __________________________________

EQUIPMENT RATING ________ VOLT __ PHASE

FLASH HAZARD BOUNDARY _______ inches PPE LEVEL ____

SHOCK HAZARD BOUNDARY:

LIMITED APPROACH ________ inches

RESTRICTED APPROACH ____ inches

PROHIBITIED APPROACH ____ inches

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

arc flash ppe label ansi z535 2 clauses 4 12 4 and 5 4 1
Arc-Flash / PPE Label(ANSI Z535.2, clauses 4.12.4, and 5.4.1)
  • Example of a PPE label attached to the front of electrical equipment. (based onNFPA 70E-1995)

NOTICE

EQUIPMENT NAME ___________________________________________

POWER SOURCE LOCATION __________________________________

EQUIPMENT RATING ________ VOLT __ PHASE

FLASH HAZARD BOUNDARY _______ inches PPE LEVEL ____

SHOCK HAZARD BOUNDARY:

LIMITED APPROACH ________ inches

RESTRICTED APPROACH ____ inches

PROHIBITIED APPROACH ____ inches

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

arc flash incident energy label
Arc-Flash -Incident Energy Label
  • Changes to NFPA 70E arc-flash incident energy calculation may be required.
  • At this time, there is not a recognized label that could be attached to equipment.
  • Forms available in the back of the room to propose a label to NFPA. Chance to directly influence a standard.

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

danger sign example more than one language
Danger Sign Example - More than one language

DANGER

PELIGRO

PROHIBIDA

LA ENTRADA

ALTO

VOLTAJE

KEEP OUT

HIGH

VOLTAGE

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

closing we discussed
Closing - We discussed
  • Guiding Standards
  • Types of Safety Signs
  • Signal words
  • Message words
  • Symbols
  • Color
  • Examples

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

alert the hazard
Alert the hazard !

DANGER

PELIGRO

PROHIBIDA

LA ENTRADA

ALTO

VOLTAJE

KEEP OUT

HIGH

VOLTAGE

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

comments made during presentation
Comments made during presentation
  • NEC article 490-2 defines high voltage as more then 600 volts. Use this as a guide in using the signal word “High Voltage”.
  • Similarly, voltages in the range of 50 to 600 volts should use the signal word “Hazardous Voltage”.
  • NEC 110-34(c) requires all buildings, rooms or enclosures containing exposed live parts or exposed conductors operating at over 600 voltage to have a warning sign “Danger - High Voltage - Keep Out” (also see NEC 225-50, and NEC 230-203)
  • Since the signal word “Danger” is probably overused in industry, consider using “Warning” (orange) signs to alert personnel of the hazard boundary during maintenance work procedures.
  • Also refer to NFPA-70E

IEEE IAS 2000 - Electrical Safety Workshop - Safety signs

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