Colour Coding system of Utility Lines

  • Objective:To lay down the Colour Coding system for indicating the contents of Utility Lines.
  • Scope: This Standard Operating Procedure is applicable to the formulation plant of pharmaceutical Company.
  • Responsibility
    • The Concerned Technician shall follow the Colour Coding System as per this SOP.
    • The Officer/Executive-Engineering shall be responsible for implementation of the procedure as per this SOP.
  • Accountability:Head-Engineering/Designee shall ensure the compliance of the procedure as per this SOP.
  • Abbreviation and Definitions:
  • HSD :High Speed Diesel
  • FO :Furnace Oil
  • LPG:Liquefied Petroleum Gas
  • SOP: Standard Operating Procedure
  • Procedure
  • The purpose of painting the utility pipelines with different colours is to facilitate the easy identification of the contents of the service lines and to indicate their direction of flow.
  • The colour codes for pipelines shall be painted as per the following Table.
Sr.No.Content of PipelineGround ColourFirst Colour BandSecond Colour Band
1Treated WaterSea GreenLight Orange
2Purified WaterSea Green Band

On SS line

French BlueSignal red
3Hydrant waterFire RedCrimson Red
4Chilled WaterSea GreenBlackCanary Yellow
5SteamSilver Grey Band on Aluminum CladdingSignal Red
6Compressed AirSky BlueSignal Red
7VacuumSky BlueBlack
8LPGCanary Yellow
9FOLight BrownBrilliant Green
10HSD FuelLight Brown
11HydrogenCanary YellowSignal RedFrench Blue
12NitrogenCanary YellowBlack
13OxygenCanary YellowWhite
15CondensateSea GreenLight Brown
16Hot WaterSea GreenLight Gray
17Soft WaterSea GreenLight Brown
18Waste WaterSea GreenCanary YellowSignal Red


  • To indicate the direction of flow red or white arrow marks shall be painted on the pipeline at suitable positions (e.g. at junction, entry and exit point etc.)
  • The paints used for painting on the pipeline or the tape used should have a glossy finish.
  • Forms and Records:
  • Not Applicable
  • Distribution
  • Master Copy : Documentation Cell
  • Controlled Copies: Engineering, Quality Assurance Production, Quality control,warehouse. Administration and Housekeeping

8.0       History

DateRevision NumberReason for Revision
00New SOP

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About Pharmaceutical Guidanace

Mr. Shiv Kumar is the Author and founder of pharmaceutical guidance, he is a pharmaceutical Professional from India having more than 14 years of rich experience in pharmaceutical field. During his career, he work in quality assurance department with multinational company’s i.e Zydus Cadila Ltd, Unichem Laboratories Ltd, Indoco remedies Ltd, Panacea Biotec Ltd, Nectar life Science Ltd. During his experience, he face may regulatory Audit i.e. USFDA, MHRA, ANVISA, MCC, TGA, EU –GMP, WHO –Geneva, ISO 9001-2008 and many ROW Regularities Audit i.e.Uganda,Kenya, Tanzania, Zimbabwe. He is currently leading a regulatory pharmaceutical company as a head Quality. You can join him by Email, Facebook, Google+, Twitter and YouTube

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