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BS-1710 : 1984

Contents

ForewordCommittees responsible

Specification1. Scope2. Definitions3. General4. Basic identification colours5. Code indications6. Method of application7. Direction of flow

AppendicerA. Examples of basic identification and code

indications illustrating the application ofsafety colours 4

ForewordThis British Standard has been prepared under the directionof the Mechanical Engineering Standards Committee.This revision of BS 1710 : 1975 is published to give furtherclarif ication and supersedes the 1975 edition which iswithdrawn.This standard remains in alignment with ISO/R 508'ldentification colours for pipes conveying fluids in liquidor gaseous conditions in land installations and on boardships'which is published by the lnternational Organizationfor Standardization (lSO). Table 1 gives the basic identi-fication colours but supplements ISO/R 508 by providinga basic colour for 'other liquids'and a further colour forventilation ducts and conduits for electrical services. Theprevious marking to denote a hazard (yellow with blackdiagonal stripes) has been omitted from this revisionbecause of the use of this symbol in BS 5378 to indicatea physical hazard.Examples of identification by basic colour and codeindications are illustrdted in appendices A and B. Colour

Page

B. Examples of basic identification and codeindications giving information on the pipecontents

C, Colour code indications for medical gasservices

D. Optional colour code indications for generalbuilding servicesE. Optional colour code indications for

ref rigeration services

TablerBasic identif ication coloursSafety coloursColour guideReference coloursColour guideReference colours

F igure1. Application of safety colours and code

indication colours

code indications for medical gas services are given inappendix C and these comply with the requirements ofBS 1319 which is in course of revision. Pipelines carryingindustrial gases from cylinders should have a basicidentification colour in accordance with table 1 . Optionalcolour code indications for general building services aregiven in appendix D.The identification of pipelines in land transport shouldcomply with this standard. An identification scheme forpipelines in aircraft and spacecraft is given in BritishStandard M 23.The names of colours have been retained in this standardbut these are given for guidance and when ordering onlythe reference number should be specified.This standard is supplementary to any regulations laiddown for public safety,Compliance with a Britirh Standard does not of itrelfconfer immunity from legal obligations. ,

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1.2.3.4.5.6.

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British Standard Specification forldentification of pipelines and services

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1. ScopeThis British Standard specifies the colours for theidentification of pipes conveying fluids in above groundinstallations and on board ships on a generic basis. lt alsoincludes ducts for ventilation and conduits used forcarrying electrical services.The following three methods of identification are included:

(a) basic identif ication colours only;(b) basic identif ication colours and code indications;(c) basic identification colours used in conjunctionwith the user's particular colour coding scheme.

These methods are augmented by the requirements of 5.2.NOTE, The titles ot the publications referred to in this standardare listed on the inside back cover.

2. DefinitionsFor the purposes of this British Standard the followingdefinitions apply.2.1 pipe and pipelines. Pipes, electrical conduits andducts, and their coverings.2.2 fluids. Substances consisting of particles that movefreely among themselves and are capable of being conveyedthrough pipes.2,3 labelr. Labelling including labels, plates, clips or signs.

3. General3.1 All methods of identification shall be compatiblewith the pipe and operating conditioni.3.2 Where banding (see 6.1) is adopted, the decorativeor protective colour of the pipe shall not be any of thebasic identif ication colours.3.3 The basic identification shall be included at iunctions,at both sides of each valve, service appliance, bulkhead

and wall penetration and at any other place whereidentif ication is necessary.3.4 lf the pipeline has been coded with safety colours forfire fighting, the valves shall be painted red (see b.l (a)and table 2), e,g. valves in fire extinguishing steam or waterpipelines, or in waterflooding pipelinesshall be painted red.NOTE. ln other cases valves may be painted with the appropriateidentif ication colours.

4. Basic identification coloursThe appropriate basic colour shall be in accordance withtable 1.

5, Code indications5.1 Safety colours (see table 2). Safety colours shallbe as follows:

(a) red, for fire fighting;(b) yellow for warning*;(c) auxiliary blue in conjunction with the green basiccolour, to denote pipes carrying fresh water, eitherpotable or non-potable.

5.2 lnformation. Information shall be given regarding thenature of the contents of the pipe by using the followingsystems either individually or in combination:

(a) name in full;(b) abbreviation of name;(c) chemical symbol;(d) refrigerant number as specified in BS 4580;(e) appropriate code indication lolou, bands (seenotes 1 and 2).

NOTE 1. Colour code indications for medical gas services aregiven in appendix C.NOTE 2, Optional colour code indications for genoral buildingservices are given in appendix D.NOTE 3. Optional colour code indications for refrigeration seruicesare given in appendix E. The nature of the contents of refrigerationservice pipes should also be indicated by the chemical symbol andthe refrigerant number where appropriate as specified in BS 4580,

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6. Method of application6.1 Basic identification colour only. Where the deter-mination of merely the basic nature of the fluid isrequired, the basic identif ication colour shall be appliedby one of the following methods:

(a) painted on the pipe over the whole length;(b) painted on the pipe as a band over a length ofabout 150 mm, depending on the diameter of the

I pipe at points specified in 3.3;(c) applied by wrapping around the pipe at points

I specified in 3.3 an adhesive band or identification clipof the basic identif ication colour over a length ofabout 150 rnm. depending upon the diameter of thepipe.

6,2 Basic identification colour with code indications6.2.1 Code indications as specif ied in 5.1 shall be placedat junctions, at both sides of each valve, service appliance,bulkhead and wall penetration and at any other placewhere identification is necessary. Code indication inaccordance with 5,1 shall be used in conjunction with thebasic identif ication colour reference as shown in table 1.The basic identif ication colour shall be painted either over

. the whole length of the pipe or by colour banding at

I points specified in 3.3. Where the basic identif icationcolour is applied over the whole length of pipe, the codeindications in 5,1 shall be applied at intervals along thepipe with at least the minimum number of points as

I specified in 3.3. Where the basic identification colour isin the form of bandinE (see 3.2) the code indication shallbe on or next to the colour banding.Code indication as specified in 5.2 plus, if required,other information regarding the fluid, shall be placedon the basic identification colour. lf the pipes are colourbanded, the code indication shall be on or next to thecolour band. The names. abbreviations or chemical symbolsshall be either white or black in order to contrast clearlywith the colour of the pipe or with the basic identif icationcolour and shall be placed directly on the pipe or on alabel fixed to the pipe near the basic identification colour.When labels are to be used on an installation in combina.tion with a safety colour, the background colour of thelabels shall be that of the safety colour.NOTE. Examples of the use of basic identif ication colours withcode indication are given in appendices A and B.

BS 1710: 1984

6.3 Basic identification colour with code colounNOTE, This standard only specif ies the basic identitication colourfor groups of fluids. Within a group there are many varieties forwhich it could be impossible to specify particular colours thatwould be unique to that fluid.When it is required to indicate more precisely the fluidthen the following procedures shall be adopted.lf, for example, it is required to visually identify pipesconveying various types of gas then the user shall allocatea colour for each type of gas in the plant (the colourchosen shall not be a colour listed in table 1 ) and thenproceed as follows.Three colour bands shall be placed at junctions. at bothsides of each valve, service appliance, bulkhead and wallpenetration and at any other place where identificationis necessary. The outside colour bands shall be the basicidentif ication colour for the particular family of fluids.ln this example for gas, the outside colour bands wouldbe 08 C 35 and the centre band shall be the colourallocated by the user or installer for the particular typeof gas flowing. The centre band may be of one colouror a combination of colours within the width ofapproximately 100 mm. Further examples are given inappendices C and D.NOTE. The dimensions of the colour bands are illustrated infigure L

The application of colour bands shall be by one of thefollowing methods:

(a) painting;(b) adhesive colour bands;(c) equivalent colour clips.

7. Direction of flowWhen it is required to show the direction of flow of thefluid, this shall be indicated by an arrow situated in theproximity of the basic identif ication colour and paintedwhite or black in order to contrast clearly with the basicidentification colour. lf a label with a code indication isattached to the pipe. the direction of flow shall be shownby the pointed end of this label.For central heating systems and other closed circuitswhere it is necessary to indicate separately the flow andreturn pipes, this shall be done by the use of the wordFLOW or the letter F on the one pipe, and the wordRETURN or the letter R on the other (see appendix B).

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Basic identificaiioncotour

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BS 1710:1984

Appendix A

Examples of basic identif ication and code indications illustrating the application of safety colours

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Appendix D

Optional colour code indications for general building services :(Colour names are given for guidance. When specifying colours the colour references given in tables 1, 2 and 4 shouldbe stated.)Tabte 3. Colour guide

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Colour code indication Eaaic identifi oatkm colour(approximatly 150 mm)

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Table 4. Reference colours (if other than safety colours) !not previously specif ied in tables 1 and 2.

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optionalcolourcodeindieationsforrefrigerationservices(Colour names are given for guidance. When specifying colours the colour references given in tables 1, 2, 4 and 6 shouldbe stated.)

Table 5. Colour guide

Table 6. Referenos colourc (if other than safety colours)not previously specif ied in tables 1.2 and 4

NOTE 1; Basic colour: Yellow ochre 0S C 35/BS 48ff).NOTE 2. See noto 3 of 5.2.

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e for this British StandardcommitGes responsiblThe preparation of this gritish Standard was entrusted by theMechanical Engineering Standards Committee (MEE/-) toTechnical Committee MEE/l04 upon which the followingbodies were represented:British Compressed Air SocietyBritish Compressed Gases AssociationBritish Befrigeration and Air Conditioning AssociationBritish Ship Research AsrociationChief and Assistant Chief Fire Officers' Association '

Amendments issued since publication

Engineeiirrg Equipment and Materials Users' AssociationFire Offices Committeelnstitute of Marine Engineerslnstitute of Ref rigerationlnstitution of Fire Engineerslnstitution of Gas Engineerslnstitution of Occupational Safety and Healthlnstitution of Plant EngineersPaintmakers .Association of-.Great Br itain Ltd'United Kingdom Atomic Energy Authority t

Amd. No.

6012

Text

lndicated bY a line in the margin

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