1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS 5970:2012Thermal insulation ofpipework, ductwork,associated equipment andother industrial installationsin the temperature range of100 C to +870 C Code ofpracticePublishing and
2、 copyright informationThe BSI copyright notice displayed in this document indicates when the documentwas last issued. The British Standards Institution 2012Published by BSI Standards Limited 2012ISBN 978 0 580 56662 2ICS 23.040.01; 27.220; 91.100.60The following BSI references relate to the work on
3、this standard:Committee reference B/540/7Draft for comment 12/30147224 DCPublication historyFirst published May 1981Second edition April 1992Third edition December 2001Fourth (current) edition, September 2012Amendments issued since publicationDate Text affectedBS 5970:2012 BRITISH STANDARDContentsFo
4、reword ivSection 1: General 11 Scope 12 Normative references 13 Terms and definitions 3Section 2: Design and materials 54 Design considerations 55 Exchange of design data 116 Factors affecting planning and programming 137 Typical characteristics of insulating materials and insulation systems 148 Cor
5、rosion 279 Selection of thermal insulating materials 3310 Selection of securing materials 3911 Selection of vapour barriers 5312 Selection of finishing materials, including ultimate treatment of finish 6213 Selection of thermal insulation systems 67Section 3: Site considerations 7114 Basis and metho
6、d of presenting schedule of work for agreement betweenpurchaser and contractor 7115 Packaging and transport to site 7216 Labour and supervision 7217 Provision of storage space, protection and safety during storage 7318 Provision of power, water, light, heat and accommodation forpersonnel 7319 Provis
7、ion of access equipment 7420 Responsibility for studs, cleats, etc. 7421 Observance of site safety and security regulations 7422 Protection of adjacent equipment and surfaces 7423 Clearing waste material from site 7424 Health considerations 75Section 4: Application methods 7625 Methods of applicatio
8、n and practical consideration 7626 Surface preparation and accessories 7627 Securements 7728 Cold insulation Application for systems operating in the temperaturerange 100 C to ambient temperature 8729 Hot insulation Application for systems operating in the temperaturerange above ambient to +870 C 10
9、230 Indoor finishes and their methods of application 12531 Weather-resistant finishes 13232 Ultimate treatment of finish painting 13433 Inspection and testing of the insulated system materials before and duringinstallation 135Section 5: Post-installation inspection and maintenance 13634 Maintenance
10、13635 Guarantees 138AnnexesAnnex A (informative) Adhesives 139Annex B (informative) Water vapour pressure and the relation to water vapourbarriers 143Annex C (informative) Water vapour diffusion resistance ratio ( value) 145Annex D (informative) Examples of termination methods 146Bibliography 148BRI
11、TISH STANDARD BS 5970:2012 The British Standards Institution 2012 iList of figuresFigure1Typical method of staggering insulation sections on a straight pipe(applies where pipe sections are applied in half sections) 6Figure 2 Ship-lapped layers of insulation 7Figure3Typical contraction/expansion join
12、ts for insulated pipework (for use at5 C or colder) 36Figure 4 Linear thermal movement of various materials between temperaturesof 20 C and 100 C 43Figure5Typical compression/support joint (for use at 5 C or above) 44Figure6Typical cladding and/or insulation support for vertical pipework Spacing of
13、joints (hot insulation) 45Figure7Typical methods of insulating horizontal vessels 46Figure8Typical cladding and/or insulation support for vertical pipework Support arrangements (hot insulation) 47Figure9Typical insulation supports for vessels 48Figure 10 Typical methods of insulating vertical vessel
14、s 51Figure 11 Method of supporting cladding 52Figure 12 Preferred option Hanger incorporating load-bearing insulation (forpipes operating above or below ambient temperature) 58Figure 13 Non-preferred option Hanger in direct contact with pipe (not forpipes operating below ambient temperature) 59Figur
15、e 14 Typical roller support incorporating load-bearing insulation 60Figure 15 Typical support for circular ducting incorporating load-bearinginsulation (operating above or below ambient temperature) 61Figure 16 Banding 79Figure 17 Typical support for rectangular ducting incorporating load-bearingins
16、ulation (operating above or below ambient temperature) 83Figure 18 Typical proprietary support inserts 84Figure 19 Typical method for insulating vessels with conical bottoms 85Figure 20 Typical arrangement showing termination of insulation adjacent tothe tank bottom with the bottom left uninsulated
17、for ease of inspection 86Figure 21 Typical method of insulating a valve where metal cladding is notrequired 88Figure 22 Typical method of insulating branches of vessel for cold workshowing layered junction 89Figure 23 Pre-fabricated valve box in single-layer insulation system 93Figure 24 Valve box,
18、dual layer cold pipework using rigid insulation withnon-metallic coating 94Figure 25 Pre-fabricated flange box in single-layer insulation system 95Figure 26 Typical method of insulating manhole (cold work) 96Figure 27 Typical method indicating the extent of insulation on vessel skirt 98Figure 28 Typ
19、ical method of insulating high temperature expansionbellows 104Figure 29 Typical method of insulating cold temperature expansionbellows 104Figure 30 Typical method of insulating flexible pipe 106Figure 31 Typical method of insulating steam traced pipe 109Figure 32 Typical method of insulating electr
20、ically traced pipe 110Figure 33 Typical arrangement showing termination of insulation adjacent tothe tank roof 115Figure 34 Insulated support plate for metal cladding 150 mm square 120Figure 35 Typical joints in sheet metal 121Figure 36 Typical expansion joint between hot vessel and self-setting cem
21、entcovering 127Figure D.1 Termination method, hot pipework using rigid insulation 146Figure D.2 Termination method, dual-layer cold pipework using rigidinsulation 147BRITISH STANDARDBS 5970:2012ii The British Standards Institution 2012List of tablesTable1Typical insulating materials for use at tempe
22、ratures higher thanambient 16Table2Typical insulating materials for use at temperatures higher thanambient with no product standard 18Table3Typical insulating materials for use at temperatures below ambient 20Table4Typical insulating materials for use at temperatures below ambientwith no product sta
23、ndard 21Table 5 Insulation bonding adhesives for pre-formed sections and slabs 40Table6Typical values for water vapour permeance 55Table7Water vapour permeance conversion 56Table 8 Expansion gaps 103Table 9 Thickness of metal cladding 122Table 10 Compatibility between screws/rivets and cladding mate
24、rial 128Table C.1 Water vapour diffusion resistance ratio ( value) 145Summary of pagesThis document comprises a front cover, an inside front cover, pages i to vi,pages 1 to 150, an inside back cover and a back cover.BRITISH STANDARD BS 5970:2012 The British Standards Institution 2012 iiiForewordPubl
25、ishing informationThis British Standard is published by BSI Standards Limited, under licence fromThe British Standards Institution, and came into effect on 30 September 2012. Itwas prepared by Subcommittee B/540/7, Thermal insulation for equipment andindustrial applications, under the authority of T
26、echnical Committee B/540,Energy performance of materials, components and buildings. A list oforganizations represented on this committee can be obtained on request to itssecretary.SupersessionThis British Standard supersedes BS 5970:2001, which is withdrawn.Information about this documentCombustion
27、of fossil fuel is a major cause of the “greenhouse effect”, the termgiven to global warming caused by the build-up of greenhouse gases in theatmosphere, principally carbon dioxide, which inhibits the re-radiation of heatfrom the Earth. This British Standard acknowledges that the application oftherma
28、l insulation leads to a reduction in these greenhouse gases.This British Standard explains the basic principles for selecting insulation systemsfor specific requirements. It is not practical to deal with every possiblecombination of insulating material and finish, so only general principles areindic
29、ated.Hazard warningsWARNING. This British Standard calls for the use of substances and/orprocedures that can be injurious to health if adequate precautions are nottaken. It refers only to technical suitability and does not absolve the userfrom legal obligations relation to health and safety at any s
30、tage.Use of this documentAs a code of practice, this British Standard takes the form of guidance andrecommendations. It should not be quoted as if it were a specification andparticular care should be taken to ensure that claims of compliance are notmisleading.Any user claiming compliance with this B
31、ritish Standard is expected to be able tojustify any course of action that deviates from its recommendations.It has been assumed in the preparation of this British Standard that compliancewith its provisions will be entrusted to appropriately qualified and experiencedpeople, for whose use it has bee
32、n produced.This British Standard contains many references to the literature and adviceprovided by the source of the materials to be used. Traditionally, this was themanufacturer and ultimately still is. However, there has been a rise in the use ofsuppliers or distributors offering a whole range of i
33、nsulation and ancillaryproducts, made by others, who are “middlemen” between the manufacturerand the user. In this instance, the contractor has the commercial/contractualrelationship with the supplier who obtains the material literature or advice fromthe manufacturer.BRITISH STANDARDBS 5970:2012iv T
34、he British Standards Institution 2012Presentational conventionsThe provisions in this standard are presented in roman (i.e. upright) type. Itsrecommendations are expressed in sentences in which the principal auxiliaryverb is “should”.Commentary, explanation and general informative material is presen
35、ted insmaller italic type, and does not constitute a normative element.The word “should” is used to express recommendations of this standard. Theword “may” is used in the text to express permissibility, e.g. as an alternative tothe primary recommendation of the Clause. The word “can” is used to expr
36、esspossibility, e.g. a consequence of an action or an event.Notes and commentaries are provided throughout the text of this standard.Notes give references and additional information that are important but do notform part of the recommendations. Commentaries give background information.Contractual an
37、d legal considerationsThis publication does not purport to include all the necessary provisions of acontract. Users are responsible for their correct application.Compliance with a British Standard cannot confer immunity from legalobligations.Particular attention is drawn to the following specific re
38、gulations: The Building Regulations 2010 1, 2, 3; The Control of Substances Hazardous to Health (Amendment) Regulations2004 4; The Chemicals (Hazard Information and Packaging for Supply) Regulations2009 5; The Collection and Disposal of Waste Regulations 1988 6; The Petroleum Act 1998 7; and The Con
39、trol of Asbestos at Work Regulations 2006 8.BRITISH STANDARD BS 5970:2012 The British Standards Institution 2012 vBRITISH STANDARDBS 5970:2012This page deliberately left blankvi The British Standards Institution 2012Section 1: General1 ScopeThis British Standard gives recommendations for thermal ins
40、ulation of pipework,ductwork, associated equipment and other industrial installations in thetemperature range 100 C to +870 C.The prime focus of each section within this British Standard is: design (Section 2), for design consultants and specifiers; site considerations (Section 3), for all users; ap
41、plication (Section 4), for mechanical contractors and thermal insulationcontractors; post-installation inspection (Section 5), for operators.It does not cover structural insulation of buildings and cold stores, fireprotection of structures, refractory linings of plant, aircraft and all externalunder
42、ground mains.NOTE Annex A provides further guidance on adhesives. Annex B provides guidanceon water vapour pressure and the relation to water vapour barriers. Annex Cprovides guidance on the water vapour diffusion resistance ratio. Annex D givesillustrative examples of termination methods for hot an
43、d cold pipework.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in thisdocument and are indispensable for its application. For dated references, onlythe edition cited applies. For undated references, the latest edition of thereferenced document (includi
44、ng any amendments) applies.BS 1710, Specification for identification of pipelines and servicesBS 3533, Glossary of thermal insulation termsBS 3958-3, Thermal insulating materials Part 3: Metal mesh faced man-mademineral fibre mattressesBS 3958-6, Thermal insulating materials Part 6: Finishing materi
45、als Hardsetting composition, self-setting cement and gypsum plasterBS 5241 (all parts), Rigid polyurethane (PUR) and polyisocyanurate (PIR) foamwhen dispensed or sprayed on a construction siteBS 54221), Method for specifying thermal insulating materials for pipes, tanks,vessels, ductwork and equipme
46、nt operating within the temperature range40 C to +700 CBS 5908, Code of practice for fire precautions in the chemical and alliedindustriesBS 7021, Code of practice for thermal insulation of roofs externally by means ofsprayed rigid polyurethane (PUR) or polyisocyanurate (PIR) foamBS 9999, Code of pr
47、actice for fire safety in the design, management and use ofbuildings1)BS 5422:2009 is referenced informatively.BRITISH STANDARD BS 5970:2012 The British Standards Institution 2012 1BS EN 12664, Thermal performance of building materials and products Determination of thermal resistance by means of gua
48、rded hot plate and heatflow meter methods Dry and moist products of medium and low thermalresistanceBS EN 12667, Thermal performance of building materials and products Determination of thermal resistance by means of guarded hot plate and heatflow meter methods Products of high and medium thermal res
49、istanceBS EN 12939, Thermal performance of building materials and products Determination of thermal resistance by means of guarded hot plate and heatflow meter methods Thick products of high and medium thermal resistanceBS EN 13480 (all parts), Metallic industrial pipingBS EN 13941, Design and installation of preinsulated bonded pipe systems fordistrict heatingBS EN 14015:2004, Specification for the design and manuf
