Color Codes for Pipe lines
COLOUR CODING OF PIPING SYSTEM Type of Pipe
Use of pipe
Colour of pipe
Water Lines:
Raw Water
Olive Green
Settled or clarified water
Aqua
Finished or potable water
Dark blue
Non-potable water
Blue
Water with heating digesters digesters or buildings
Blue with a 6 in. (150 mm) red band space 30 in. (760 mm) apart
Type of Pipe
Use of pipe
Colour of pipe
Chemical Lines:
Alum or primary coagulant
Orange
Ammonia
White
Carbon Slurry
Black
Caustic
Yellow with green band
Chlorine gas solution
Yellow
Fluoride
Light blue with red band
Lime slurry
Light green
Ozone
Yellow with orange band
Polyme Polymers rs or coagulant coagulant aids
Orange Orange with green green band
Potas otassi sium um perper-ma magn gnat ate e
Viol Viole et
Soda Ash
Light green with red band
Sulfuric Acid
Yellow with red band
Sulfur dioxide
Light green with yellow band
Type of Pipe
Use of pipe
Colour of pipe
Waste Lines:
Backwash Waste
Light Brown
Sludge
Dark Brown
Sewer Sewer (Sanitary (Sanitary or other) other) Dark grey Sludge Lines:
Gas Lines:
Other Lines:
Raw Sludge
Brown wid black bands
Sludge recirculation or suction
Brown wid yellow bands
Sludge draw off
Brown wid Orange bands
Sludge recirculation recirculation discharge
Brown
Sludge Lines
Orange (or red)
Natural gas
Orange (or red) with Black bands
Compressed air
Green
ANSI Colour Codes The yellow background signifies that the piping may hand handle le haza hazard rdou ouss ma mate teri rial al.. Unfortunately, much has changed in the typical plant over the last 70 years since this standard was origin originall ally y concei conceived ved.. The basic standard can be traced to the 1920's and use in the US military. Obviously, our definitions for what is "haz "hazar ardo dous us"" has has chan change ged. d. Water, air or carbon dioxide, under certain situations (pressure, heat, mixture with other chemicals) are not always benign.
How do we interpret, for example, materials that should be used for "fire quenching" that are also "hazardous"? Should we use the red or the yellow ANSI scheme? Or, how do we label a pipe that carries both the liquid (which should be green) and gas form of a chemical (which should be blue)?
Hazards, in other words, are not so easily defined. "Hazardous" may mean that the material is hazardous to a person nearby, or to the operation of the overall plant itself. Could "hazardous" mean that the materials flowing through the process piping, if not handled carefully, carefully, could contaminate the product. product . Or, if leaked into the atmosphere, could the chemical infect the environment or cause damage to employees after cumulative exposure over a period of years? Clearl arly, the ANSI standard was writt itten for far simpler times.
Color
Std
Red
APWA
Yellow
Meaning
Electric Power Lines, Cables, Conduit and Lighting Cables Gas, Oil, Steam, Petroleum or APWA Gaseous Materials Communication, Alarm or Signal Lines, Cables or Conduit
Example Buried High Voltage Line Natural Gas Distribution Line
Orange
APWA
Buried Fiber Optic Cable
Blue lue
APW PWA A Water, er, Irri Irrig gation tion and and Slurr lurry y Line ines
Burie ried Water Line ine
Green
APWA Sewers, Drain Line
Buried Storm Sewer Line
Red
Traffic Prohibition
STOP, Yield
Orange
Traffic Temporary Work Zone
Construction Zone Ahead
Yellow
Traffic Caution
Merge Ahead, Slow
Blue
Traffic Information Signs
Hospital
Brown
Traffic Historical or Park
Picnic Area Ahead
Color Green
Std Traffic ANSI Red Sign ANSI Orange Sign ANSI Yellow Sign ANSI Blue Sign ANSI Green Sign ANSI Red Pipe ANSI Yellow Pipe ANSI Blue Pipe ANSI Green Pipe Blue/Red/Yello NFPA w 701
Meaning Directional Signs Danger Signs, Highest Hazard Warning Signs, Medium Hazard Caution Signs, Lowest Hazard
Example Exit 1 Mile, Go Hazardous Voltage Will Cause Death Hazardous Voltage May Cause Death Turn Machine Off When Not In Use
Notice Signs
Employees Only
Safety First Signs
Wear Ear Plugs
Fir Fire Quench enchin ing g Ma Matterials ials
Fir Fire Prot Prote ectio tion Wate ater
Materi Mat erials als Inher Inheren ently tly Hazar Hazardou douss
Chlor Chlorine ine
Materials of Inherently Low Hazard, Compressed Air Gas Materials of Inherently Low Hazard, Storm Drain Liquid Blue is used for Health Hazards, Red for Flammability and Yellow for reactivity
Variations in colour-coding standards standards are inevitable in our complex plant and pluralistic society. While laudable, harmonization of colour-codes, then, will be very difficult to achieve. Many plants use other colour-codi oding; for example, colour our-code each system (i.e. Lube Oil is brown, Condensate is green, etc.) or colour code by Unit (i.e. Unit 1 is yellow, Unit 2 is blue, etc.). For most plants, we recommend either the ANSI pipe marker colour colour codes or simply black on yellow markers. markers. For more complex plants, we recommend recommend a colour-coding colour-coding by system. For all environments, we recommend the inclusion of RTK information information on the valve or on the pipe.
ANSI Color Code for Thermocouple and Thermocouple Extension Wire Thermoco Thermocouple uple Wire Color ANSI Symbol Wire Alloys
T/C Extensio Extension n Wire Color
Polarity Individual
Jacket
Individual
Jacket
J
Iron Constantan(TM)
+JP -JN
White Red
Brown
White Red
Black
K
CHROMEL®* ALUMEL®*
+KP -KN
Yellow Red
Brown
Yellow Red
Yellow
T
Copper Constantan(TM)
+TP -TN
Blue Red
Brown
Blue Red
Blue
E
CHROMEL®* Constantan(TM)
+EP -EN
Purple Red
Brown
Purple Red
Purple
N
Nicrosil(TM) Nisil(TM)
+NP -NN
Orange Red
Brown
Orange Red
Orange
RSX
Copper Copper Alloy
+RSP -RSN
-
-
Black Red
Green
BX
PCLW630/Copper Copper
+BP -BN
-
-
Grey Red
Grey
W3X W5X
Alloy 203; Alloy 405 +WP Alloy 225; Alloy 426 -WN
-
-
White/Red Red
White/R ed
ANSI & Pipes What are the ANSI pipe marking guidelines and do we have to follow them? No, many industries have not followed the ANSI guidelines. But they can still a useful guide to smaller firms, even as they becomes less popular with larger firms. The ANSI pipe marker guidelines define both colour codes and sizes.
Material
Marker Color
Fire Fire Quench Quenching ing Ma Mater terial ialss
Red Red
Materials Inherently Hazardous
Yellow
Materials of Inherently Low Hazard, Gas
Blue
Materials of Inherent Low Green Hazard, Liquid
Length of Colour Field Pipe Pipe OD Min Pipe Pipe OD Max Max for Pipe Marker
Size of Letter for Legend
0.75"
1.25"
8"
0 .5 "
1.5"
2"
8"
0.75"
2.5"
6"
12"
1.25"
8"
10"
24"
2 .5 "
10"
--
32"
3 .5 "
The The prob proble lem, m, unf unfortu ortuna nattely ely, is tha that the the mode modern rn proc proces esss plan plantt has has bec become ome ever ver more ore compl omple ex and internationally "aware". To most nuclear and large international chemical firms, the traditional ANSI pipe marker designs are both superficial and outdated. outdated. Note that OSHA or an ISO 9000 audit team inspects your plant, not ANSI! The demand, then, to put more and more information on the pipe marker is driven by several new regulations and standards: the EPA Standards for Clean Air, the OSHA Process Chemical Specifications and ISO 9000 programs.
Just as OSHA is changing their focus from complianceoriented standards to performance-oriented standards, plants are changing too. Before, the only question was whether or not your pipes, valves and hazards were were labeled at all. Simp Simple le,, oneone-wo word rd lege legend ndss wer were suff suffic icien ientt (eno (enoug ugh h to "CYA", to put it bluntly). Now, the questions are more complicated: (1) do your employees actually understand potential hazards, (2) do they know how to avoid the hazard, and most importantly (3) do they know what to do in an emergency. Passive, single word pipe markers have been supplanted by those giving more information and integrating into the plant's proactive hazardous commu mmunication training.
SAFETY & PIPING COLOR CODES OSHA SAFETY COLORS The Occu Occupa pati tion onal al Safe Safety ty and and GENERAL INFORMATION: The Health Act (OSHA) requires that all industries colourcode safety equipment locations, physical hazards and protective equipment. Safe Safety ty colo colour ur code codess were were est establi ablish shed ed by the the Am Amer eric ican an Nati Nation onal al Stan Standa dard rdss Ins Institu titutte (ANS (ANSI) I) and and adop adoptted by OSHA for use in hazardous areas. Porter Coatings’ Safety Colours conform to OSHA and ANSI guidelines. OSHA does not specify the exact shade of colour, but the colour-coding ing should be consistent throughout a facility.
RED: THE BASIC COLOR FOR THE IDENTIFICATION IDENTIFICATION OF: Fire Protection Equipment and Apparatus: Apparatus: Used for: fire alarm boxes, fire blanket boxes, fire buckets or pails, fire exit signs, fire extinguishers, fire hose locations, fire hydrants, fire pumps, fire sirens, post indicator valves for sprinkler system and sprinkler piping. Danger. Used for: safety cans or other portable containers of flammable liqu liquid idss havi having ng a flas flashp hpoi oint nt at or belo below w 80°F 80°F,, table able cont contai aine nerrs of flammable liquids (with additional clearly visible identification of the contents either in the form of a yellow band around the can or the name of the contents conspicuously stencilled or painted on the can in yellow and danger signs. Stop. Used for: Emergency stop bars on hazardous machines and stop but buttons ons or elec electr tric ical al swit witche ches used used for eme emergenc gency y stoppi opping ng of machinery. PORTER COATINGS SAFETY RED: 2772 PORTER GUARD™ Fast Dry Gloss Enamel Safety Red 2912 PORTER GUARD™ DTM Acrylic Gloss Enamel Safety Red Red PC4072 PORTERGLAZE™ 4000 Gloss Epoxy Safety Red • • •
ORANGE: THE BASIC COLOR FOR DESIGNATING DANGEROUS PARTS OF MACHINES OR ENERGIZED EQUIPMENT WHICH MAY CUT, CRUSH, SHOCK, OR OTHERWISE OTHERWISE INJURE. Used to emphasize such hazards when enclosure doors are open or when gear belt or other guards around moving equi equipm pmen entt are are open open or remov emoved ed,, expo exposi sing ng ungu unguar arde ded d hazards. PORTER COATINGS SAFETY ORANGE: 2754 PORTER GUARD™ Fast Dry Gloss Enamel Safety Yellow 2913 PORTER GUARD™ DTM Acrylic Gloss Enamel Safety Yellow PC4074 PORTERGLAZE™ 4000 Epoxy Gloss Yellow Base PC9074 PORTERTHANE™ 9000 Urethane Gloss Yellow Base
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YELLOW: Used for: or: THE THE BASI BASIC C COL COLOR FOR FOR DE DESI SIGN GNA ATING TING CAUT CAUTIO ION: N: Used marking physical hazards such as striking against, stumbling, falling, tripping and “caught in between.” Solid yellow, yellow and black stripes, yellow and black checkers (or yellow with suitable contrasting background) should be used used inte interrchan change geab ably ly,, usin using g the the combi ombina nati tion on whic which h wil will attract the most attention in the particular environment.
PORTER COATINGS SAFETY YELLOW: •
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2754 PORTER GUARD™ Fast Dry Enamel Safety Yellow 2913 2913 PO PORT RTER ER GUARD™ DTM Acry Acryli licc Glos Glosss Enam Enamel el Saf Safety ety Yellow
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PC4074 PORTERGLAZE™ 4000 Epoxy Gloss Yellow Base
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PC9074 PORTERTHANE™ 9000 Urethane Gloss Yellow Base
GREEN: THE BASIC COLOR FOR DESIGNATING “SAFETY” AND THE
LOCATION OF FIRST AID EQUIPMENT (OTHER THAN FIREFIGHTING EQUIPMENT) PORTER COATINGS SAFETY GREEN: 2744 PORTER GUARD™ Fast Dry Enamel Ultra Deep Base 2904 PORTER GUARD™ GUARD™ DTM Acrylic Gloss Enamel Ultra Deep Base PC4044 PORTERGLAZE™ 4000 Epoxy Gloss Neutral Base PC9044 PORTERTHANE™ 9000 Urethane Gloss Neutral Base
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BLUE: THE BASIC COLOR FOR DESIGNATING “CAUTION”, LIMITED TO WARNING AGAINST THE STARTING, THE USE OF, OR THE MOVEMENT OF EQUIPMENT UNDER REPAIR REPAIR OR BEING WORKED ON. PORTER COATINGS SAFETY BLUE: 2744 PORTER GUARD™ Fast Dry Enamel Ultra Deep Base 2904 PORTER GUARD™ DTM Acrylic Gloss Enamel Ultra Deep Base PC4044 PORTERGLAZE™ 4000 Epoxy Gloss Neutral Base PC9044 PORTERTHANE™ 9000 Urethane Gloss Neutral Base
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PURPLE: THE BASIC COLOR FOR DESIGNATING RADIATION HAZARDS (X-R (X-RA AY, ALPH ALPHA, A, BE BET TA, GAMM GAMMA, A, NEUT NEUTR RON, ON, PRO PROTON, ON, DEUTERON, AND MESON TYPES). Used in combination with purple for markers such as tags, labels, signs and floor markers.
PORTER COATINGS SAFETY PURPLE: Tint* from: •
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2744 PORTER GUARD™ Fast Dry Enamel Ultra Deep Base 2904 2904 PORTER PORTER GUARD™ DTM DTM Acry Acryli licc Glos Glosss Enam Enamel el Ultr Ultra a Deep Base PC4044 PORTERGLAZE™ 4000 Epoxy Gloss Neutral Base PC9074 PORTERTHANE™ 9000 Urethane Gloss Neutral Base
BLA BLACK, CK, WHIT WHITE, E, OR COMB COMBIN INA ATION TIONS S OF BLA BLACK AND WHITE: THE THE BASIC ASIC COL COLOR ORS S FOR DE DESI SIGN GNA ATING TING TRAF TRAFFI FIC C AND AND HOUSEKEEPING MARKINGS. Solid white, solid black, single colour striping, alternate stripes of black and white, or black and white checkers should be used in accordance with local conditions. PORTER COATINGS SAFETY BLACK: 2728 PORTER GUARD™ Fast Fast Dry Enamel Black 2928 PORTER GUARD™ DTM Acrylic Gloss Black NOTE: The Porter Coatings Industrial Colour Selection Guide (Order #5860/E) for safety safety colour tint formulas. •
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