- ~~B S I B S U 4 L 4 7 80 L b 2 4 b b î 0358539 5 BS4147: 1980 UDC 669.1.056.9 : 665.775 (Reprinted, incorporatingAmendment No. 1 ) CONFIRMED AUGUST 1987 O d Specification for B¡tumen-based hot-applied coating e materials for protecting iron and steel, including suitable primers where required Spécification des matériaux de revêtement à base de bitume appliqués à chaud pour la protection du fer et de l'acier, y compris toutes couches primaires appropriées nécessaires Spezifikation für warmaufgetragene bitumenbasierte Beschichtungen fur Eisen- und Stahlschutz, einschließlich geeigneter Vorstreichstoffe sofern erforderlich e O British Standards Institution COPYRIGHT British Standards Institute on ERC Specs and Standards Licensed by Information Handling Services a revised version of which is being published the aim has been to produce a document which is simultaneously with this standard. A surface profile requirement hot-applied coatings. Tests for type 2 coating materials 3 13. COPYRIGHT British Standards Institute on ERC Specs and Standards Licensed by Information Handling Services .and coal-tar-based protections for CP 201 O : Part 2 and Part 3 gives guidance on application steel pipes is in course of preparation. Bitumen primer for hot application 2 Tables Section three. Impact test 6 2. Primers L. Synthetic primer for cold application 2 8. test is carried out at O "C as well as at 2 5 O C . Determination of density at 25 'C 5 S pecif¡cat ion D. Mould for sample for density determination 5 Foreword This revision of BS 41 47 has been prepared under the This standard gives guidance on the commonly accepted direction of the Elements and Components (of Diverse uses for the different types and grades of coating Materials) for Buildings Standards Committee. References 1 H. evident that materials and practices vary widely in the Black bitumen coating solutions for cold application are countries represented on the committee. It is against corrosion is mentioned particularly in BS 534. Characteristics of type 2 coating materials 3 12. Tests for type 1 coating materials 2 Section four.A revised edition was introduced for type 2 coating materials.Characteristics of type 1 coating materials 2 5. Type B.and coal-tar-based low ambient temperatures. Sagtest 5 F. since steel Since 1967 much has been learned about the pipelines coated with these materials are often handled at specification and testing of bitumen. the drafting being to steel and iron pipelines. water and gas. Effect of non-metallic materials on water quality 4 Figure 1. Type I.Attention is drawn to the certification but which also prescribes closer limits for many properties facilities described on the inside back cover of this which experience in the UK has shown to be standard. Type C. Bendtest 6 1. 3 4. Priming of steel surfaces for the tests given in appendices E to W. compatible with the current international standard draft. Packaging 3 7. In this British Standard BS 4164. Situmen-based primer for cold appendices E to H 7 application 1 M. General E. Coating materials with inert application 2 non-fibrous fillers 2 3. and a common specified in SS 341 6. Characteristics of type 3 coating materials 3 14. Determination of penetration 5 Section one. application of bitumen. transmission of oil. Recommendations on the use of coating materials 7 7. Determination of volatile matter 5 Cooperating organizations Back cover B. Packaging. Coating materials 1. extensive installation of steel pipelines for the introduced. Application of coating material for the tests given in 6. BS 41 47 materials. Peeltests 6 3. Definitions 1 . connection with the protection of steel pipes and fittings After many meetings a draft is nearing completion. Scope 1 G. advantageous. ineffectual if the coating materials are not correctly An international standard covering the selection and applied. Sampling 4 9. Characteristics of type B primer for 1 1.Tests for type 3 coating materials 3 15. Types of primer I K. sampling 6. Type 3. 7 Section two. or they are applied to an unsatisfactory surface.Coating materials with inert fibrous cold application 2 fillers . Performance tests for bend and peel are was first published in 1967. marking. done by a committee of CEOCOR (Western European The use of hot-applied bitumen-based coatings in Committee on Corrosion and Protection of Pipelines). Marking 4 8. particularly in connection with the for the steel plates used in performance tests is also . Characteristics of type A primer for cold 1 O. Type A. Certification. J Preparation of steel surfaces for the tests 4. The direct impact published in 1973 to take account of metrication. Determination of filler content by ignition 5 C. Characteristics of bitumen in type A primer 1 9.Hot-applied coal-tar based coating standard will have to allow for the well established materials for protecting iron and steel are specified in practices of the various countries. This standard takes It should be emphasized that the protective system can be into account these technical advances. Type 2. Types of bitumen-based coating material 1 given in appendices E to H 7 5. BSI B S X 4 I 4 7 8 0 m L b 2 4 6 6 7 0158540 I BS 41 47 : 1980' Contents Page Appendices Page Foreword Inside front cover A. Unfilled coating materials 2 2. including suitable primers where required Section one.Type A primer for cold application shall 3. "C Part 58 type 1 :unfilled coating materials. 1. different substrates. environment in which it will be used. 6. References Type C. It is substantially the appropriate performance requirements given in this non-volatile and softens gradually when heated.3 inert filler.1 bitumen. order to ensure maximum adhesion of the subsequent protective coating. type 3 : coating materials with inert fibrous fillers. Bitumen-basedcoating materials are further Penetrationa t 25 O C to 10-1 mm Solubility in carbon 120to30 I 10to20 BS 2000 : Part 49 BS 2000 : sub-dividedinto a number of grades according to the conditions disulphide or Part 47 of application and service. the performance of hot-applied coating materials depends These are available in t w o grades. Types o f primer hot-applied bitumen-based materials. It is black O - or brown in colour and possesses waterproofing and adhesive properties. the following manufacturer's instructions and shall. Finely divided mineral powder or inorganic consist of a homogeneous solution of bitumen in fibre which is not substantially hygroscopic. unfilled or Three types of primer are available for use with reinforced with inert powdered fillers or with inert fibrous bitumen-based coating materials. fillers. It is obtained by refinery processes standard. Primers from petroleum. Primer of 'grade b' is intended for use under Different types and grades of material are used for the harder coating materials. which are used t o protect iron and steel against corrosion. conditions of application and service. 2. Of such a consistency a t ambient application temperature that heating is required before application. dipping the product in a bath containing the primer in the molten state.2 hot-applied. Recommendafions on the use of coating materialsare given in appendix M. drying and application of the subsequent coating is possible within a shorter time. Requirements for primers are included because Type A. NOTE 1. comply with the appropriate performance requirements given in this standard. 3. This standard indicatesfactors which need t o be taken Type B.1 Composition.4 primer. These are The titles of the standards publications referred t o in this available in three grades. not hydrocarbon or other suitable solvent having a electrically conducting and does not react with other consistency suitable for application by spray. specified in section three. Bitumen-based primers for cold application. which is soluble in the t w o in combination shall be capable of complying with carbon disulphide or trichloroethylene. Table 1. Types of bitumen-based coating material Method of test Bitumen-based coating materials shall be classified as Softening point (ring ES 2000 : follows: and bail). consisting of and coating materials are obtained from different sources. Definitions Primers shall be applied in compliance with the For the purposes of this British Standard. hydrocarbons and their derivatives. brush or ingredients of the coating material or with the other approved method. Characteristics of bitumen in type A primer 4. T y p e A. 'grade a'. They are usualiy applied by standard are listed on the inside back cover. If primer 3. Primer of 'grade a' is on the use of suitable primers. This is into account in selecting the type and grade for a suitable for all grades of coating materials It is quick particular use. after application of definitions apply. min.A material applied as a thin film to metal in properties given in table 1. % by mass COPYRIGHT British Standards Institute on ERC Specs and Standards 1 Licensed by Information Handling Services . Bitumen primers for hot application. Details of these distinctions are trichloroethylene. O type 2 : coating materials with inert non-fibrous fillers. intended for use under the softer coating materials of type 2. A very viscous liquid or solid. General NOTE 2. Synthetic primer for cold application. Scope This British Standard specifies requirements for 5. Section two. The bitumen used as a base for the primer shall have the 3. the coating materials. Bitumen-based primer for cold 3. BSI B S * 4 1 4 7 80 Lb24bb7 O L 5 8 5 4 L 3 BS 4147 : 1980 O British Standard Specification for B¡tumen-based hot-applied coating materials for protecting iron and steel. 6. When materialsare to be used in contact with potable closed cup). 9. ! i cup at 23 "CI. min. grade a and grade b coating materials brush or other approved method. Type 2 coating materials shall consist of a uniform mixture of bitumen and inert non-fibrous filler. when dry. Type 2. Type A primer shall comply with the Section three.1 Composition. Coating materials with inert max % loss non-fibrousfillers by mass 75 Appendix A 10. Coating materials requirements given in table 2 when tested by the methods 9. _I__-- ensure freedom from contamination. COPYRIGHT British Standards Institute on ERC Specs and 2 Standards Licensed by Information Handling Services .2 Characteristics. may be used as a primer for hot application.max. Characteristicsof type B primer for cold Sag. lBS 2000 : / O0 a min. Tests for type 1 coating materials between the metal and the subsequent coating. Type B primer for cold application shall (Clevelandopen I I consist of chlorinated rubber and plasticizer and. grade a or appropriate requirements of BS 41 O : not less than grade b. Alternatively. "C I 250 i 250 250 IBS4689 to give a consistency suitable for application by spray. given in table 4 when tested by the methods 93 %. 80 !Appendix D BS 2000 : Part 170 Solubility in carboni NOTE. % by mass ! O0 00 IPart47 7..06 11. Type C primer for hot application shall follows when tested by the method given in clause 6 of consist of bitumen without fillers. Type B. B S I B S U 4 3 4 7 80 lb24bbï 0358542 5 BS 4147 : 1980 6. Synthetic primer for cold application I I Flash point 7. grade c. shall provide an effective bond passing 2 5 0 p m test sieve complying with the between the metal and the subsequent coating. s 50 minimum BS 3900 : Part A6 max.O6 IAppendix C Penetration a t Flash points (Abel 25"C.06 1. when dry. the primer shall retain these characteristics for not less than 12 months from the date Table 4. type C primer complying with the given in table 6 when tested by the methods specified. shall provide an effective bond 9.3Tests. in of bitumen.2 Characteristics. in accordance with the appropriate performance requirements given in this standard. "C 23 water. Type 1.Bitumen primer for hot application The fineness of the inert non-fibrous filler shall be as 8. min. For type 3 coating material a primer having a viscosity disulphide or . 1O. Volatile matter (105 "Cto 1 1O "C 1. Type 1 coating materials shall comply with the requirements for the appropriate grade When stored in the original sealed containers at given in table 4 when tested by the methods specified.lO-'rnm 120to30 110to20 max. Type C primer shall comply with the passing 9 0 p m test sieve complying with the requirements for type 1 coating materials.2 Characteristics. Test I Oradea 1 Gradeb Method of test Table 3.. when required. s O C.2 Characteristics. "C ii 80 to 1O0 1O0 to 12C Flow time (4 mm flow Density at 25 "C. requirements for type 1 coating materials. given in table 4.1 Composition. atmospheric temperature. Type B primer shall comply with the primer. detailed in table 4. Unfilled coating materials specified and.24h Appendix E Characteristic Methodof t e a Impact Flow time (4 mm flow Digsbonded area at cup a t 23 "CI. Type 1.mm2 Appendix G Flash points (Abel NOTE. BS 1796 : 1976: 8. 24 h Appendix E 55 C. in appropriate requirements of BS 41 O : not less than accordance with the appropriate performance 99 %. towards the upper end of the range should be used. shall comply also with the requirements given in requirements given in table 3 when tested by the methods table 5 when tested by the methods specified._ I Limita Methodof test Softening point (ring and ball).2 Characteristics. Characteristicsof type A primer for cold Characteristics i Oradea I Grade b of test application Characteristic . specified and. 10.1 Composition. requirements given in this standard. materials Table 2. by agreement between the manufacturer comply with the requirements for the appropriate grade and the purchaser. trichloroethylene. g/ml ¡ 1. Type C. 8. shall provide an effective bond Table 5. it is recommendedthat additionaltests be carried out to . rnrn application 45 :C. Type 2 coating materials shall NOTE. 9. when dry. I . accordance with the appropriate performance requirements given in this standard. Type 1 coating materials shall consist between the metal and the subsequent coating. together with solvents needed cup). in conjunction with an appropriate 7. rnax.1 Composition. specified and. Characteristicsof type 1 coating of dispatch.. colouring matter. 0 water.% by mass 20 to 40 40 to 60 Appendix B 10. by mass 25 to 35 25 to 35 45 to 55 Appendix B NOTE. instructions for storing and handling the material. mm. Penetrationa t Table 7. fillers Primers shall be packed in steel drums containing not 11. a coarser grade of inert non-fibrous mineral filler.3 Tests. Softening 11.40 1.24h It 1. Tests for type 3 coating materials iroo Bend a t O°C. min. content by passing 250 p m test sieve complying with the ignition. Tests for type 2 coating materials 25 OC. Penetration at 25 OC. shall comply also Density at 25 OC. (c) in moulded cakes. Type 3 coating materials detailed in table 8. maybe used.5 Appendix E 0°C i 15000 1 - i .65 Appendix C a minimum of 99 %will pass a 355 pm test sieve. Coating materials with inert fibrous (d) in bulk. sufficient data are not availabte to containing approximately 50 kg. When materialsare to be used in contact with potable 12.O Appendix H 60°C 3. Table 8. Characteristics of type 2 coating It may be desirable t o add a proportion of inert non-fibrous materials mineral filler. initiai i 7! a t 25 C. I B S I BSx4347 AO Lb24bb7 0358543 7 BS 41 47 : 1980 Table 6. Packaging." c 250 260 260 BS 4689 Filler content by ignition. marking.for cast iron pipes Density at only. For a works-applied bitumen coating. The fineness of any such filler added shall be as follows when tested by the method given in clause 6 of Characteristic Grade a Giade b Grade c Method BS f 7 9 6 : 1976: of test passing 9 0 p m test sieve complying with the Filler appropriate requirements of BS 4 1 O : not less than 9 3 %.. with easily strippable lining.40 to 1. (b) in steel drums containing not more than 200 litres.max. min. C 1OOtol20 115to130 120to 150 Part 58 comply with the requirements for the appropriate grade given in table 8 when tested by the methods specified. 1. sampling NOTE 1. The supplier shall provide of a uniform mixture of bitumen and inert fibrousfiller.5 i! also with the requirements for the appropriate grade 75"C. C 250 250 BS 4689 1 Gradeb 6 Test I Gradea I Gradec ! Method iI I I .2 Characteristics. ! Sag.max. ..24h 11. Method oftest Flash point Clevelandoopen cup). r Table 9. . mm2 6500 Appendix G and delayed.5 } AppendixE given in table 9 when tested by the methods specified.3 Tests.5 I : - 1. Packaging water. It is recognized that for many of the products covered by this standard a cathodic disbondment test would would be of (a) in paper bags. 1 1.2tol. define such a test but the possibility of including one in the future will be considered. Characteristics of type . When materials are to be used in contact with potable 30°C 1 3. shall comply max. Sag. Type 3 coating materials shall consist more than 2 1O litres.65 Appendix C table 7 when tested by the methods specified.0 Section four.Type 2 coating materials detailed in table 6.mm 6OoC.4to 1. of which 25'ccg/cm3 1..IComposition.0 3.3 coating 10-1 mm loto20 5to17 5to15 Appendix D materiais -~ Flash point Characteristics Grade a Grade b Method (Cleveland of test open'cup). in hot liquid form.4 1. Type 3.2 to 1.. in conjunction with an appropriate primer. with the requirements for the appropriate grade given in g/m3 1. !I 6500 [ 6500 Impact i Disbovdedarea Peel. 1 I i max.0 ensure freedom from Contamination. very great value.$ax.. .. if is recommendedthat additional tests be carried out to 4OoC 3.10-1 mm 5 to 2 0 5 to 20 Appendix D Tesf i t Gradea 1 Grade b . the coating ensure freedom from contamination. mm mm2 ! 75 C. it is recommended that additional tests be carried out to Unless otherwise ordered by the purchaser. in conjunction with an appropriate primer. % appropriate requirements of BS 4 1 O : not less than 9 9 %. COPYRIGHT British Standards Institute on ERC Specs and Standards Licensed by Information Handling Services 3 . ! oftest 11. I NOTE.4 1.24b - i - .mm 1 20 ' 15 1 10 Appendix F impact Disbonded ! i Test I Grade a I Grade b I Method of test area. 50°C 3 .I5 to 1. min.. Type 3 coating materials shall point (riny BS 2000 : and ball). 1 AppendixG ~~ ~ ~~ 25°C . Gradec I .At present. material shall be supplied in one of the following forms: NOTE 2. type 2. dry. COPYRIGHT British Standards Institute on ERC Specs and 4Standards Licensed by Information Handling Services . Hemel Hempstead. the purchaser and the supplier shall agree on 0267-03 13. the supplier and one-half retained by the purchaser for the NOTE. British Standards Institution. Marking Draw not less than 1 litre either at the filling Containers of bitumen-based hot-applied coating stage or from one or more previously unopened materials shall be legibly and permanently marked with containers.g. The samples so taken shall be identified by Avenue. airtight container the following: with the sample t o leave an ullage of of approximately (a) the number of this British Standard. Herts HP2 4SQ in the case of certification marks administered by BSI or to the appropriate authorityfor other certification marks. the filler will settle Department of the Environment Committee on Chemicals and during storage. Street.The accuracy of such a claim is therefore solely the manufacturer's responsibilit Enquiries as to the availability of third party certification to support such claims should be addressed to the Director. materials approved by the In type 2 and type 3 coating materials. A list of approved chemicals and materials is available from the Technical bottom of the package. BSI B S m 4 3 4 7 8 0 = 3b24bb7 0358544 7 m BS 41 47 : 1980 13. Berkshire SL1 4BG. they shall be made up Swimming Pools are consideredfree from toxic hazard for the of equal increments taken from the top. *Marking BS 41 47 on or in relation to a product is a claim by the manufacturer that the product has been manufactured in accordance with the requirements of the standard. ISSN for testing. Water Division. In order to ensure that test samples of Materials of Construction for use in Public Water Supply and these materials are representative. 660 Ajax t o be adopted." 5 %. Sampling set out in the UK Water Fittings Byelaws Scheme When samples of coating material or primer are required Information and Guidance Note No. Romney House. BS 41 47. Secretary of that Committee at the Department of the Sampling of primers shall be carried out in the following Environment. obtainable from the Water Research the number of packages to be sampled and the procedure Centre. Maylands Avenue. Slough. 43 Marsham manner. Effect of non-metallic materials on water (c) the manufacturer's identity. Non-metallic materials shall comply with the requirements for the testing of non-metallic materials 14. Water Byelaws Advisory Service. Seal and mark each sample container with full details and date of sampling. middle and purposes Õf compliance with this clause. grade b). ¡. Fill a suitable clean.e. 15. (b) the type and grade number of the material (e. 5-01-02. quality ídì the manufacturer's batch number. Pending the determination of suitable means of purpose of making such tests as he may require. characterizingthe toxicity of leachates from materials in contact with potable water. London SW1 P 3PY. A.7 and 9. but do not sieve the sample before Appendix C pouring it into the penetration tin.0 g of the primer into a tared flat bottomed C. Mould for sample for density determination COPYRIGHT British Standards Institute on ERC Specs and Standards 5 Licensed by Information Handling Services . Steel pot of approximately 80 mm Determinationof volatile matter diameter and 1O 0 m m height. Determinationof filler content by ignition Add a few drops of wetting agent to a small beaker of B. Weigh the C. Carefully remove a l l air bubbles adhering to the cold muffle furnace with good ventilation and raise it to a specimen and to the thread.2. stir continually to avoid in a desiccator and reweigh to the nearest milligram.1. A41 is the mass of sample before heating. It is convenient to fill the cylinder for the penetration test and the mould for the density test a t the same time. Leave a 1 5 mm uncoated border around the four edges of the plate and draw three lines parallel with one edge at 7 5 m m intervals across the surface of the coating material and continued on the uncoated surface of the plate to the edges.l Preparation of test specimens. F=IOO - Ml Appendix D where Determinationof penetration . than 2 h. Until table 3 for 3 h. Maintain the oven a t the temperature and for the period specified for the appropriate grades in tables 5. E.O g and 2. Allow the dish to cool to room temperature the sample is completely fluid. Measure the maximum sag of each line on the plate. and weigh it t o the nearest milligram. water at 2 5 C. temperature and then part the mould.5 g of water in the beaker about 25 mm from the bottom of the coating material into the crucible. until the mould is Mt -Mi almost full. A polished brass mould as shown in figure 1. plate. Ma Density at 25 OC= B. Mz is the mass of sample after heating. Calculate the filler content. The pot is covered with a loose fitting lid. avoiding the inclusion of air bubbles. Calculate the density of the sample as crucible and ash to the nearest milligram. where Allow the material and the mould to cool to ambient Ml is the mass of sample before heating. Thereafter stir occasionally. as a percentage by mass of the primer as follows: Then pour the fluid material carefully into the mould.Store the plate in a vertical position in an oven. Determination of density at 25 o C Appendix E C. V. Mz is the mass of sample after heating. B S I B S m 4 1 4 7 80 W L b 2 4 b b ï 0358545 O BS4147:1980 Appendix A C. Procedure.2 Procedure. M2 Mwis the mass of sample in water at 25 C. Determine penetration by the method given in BS 2000 : Part 49. F. Place the beaker on a bridge across the O pre-ignited silica crucible approximately 40 mm in balance pan.IMould. Draw the lines in such a way that the prepared surface is not damaged. Heat about 1O 0 g of sample slowly in the circular dish. Then remove the crucible from the muffle furnace and allow it to cool in a desiccator.2 Calculation. hook on the balance so that it is fully immersed in the Weigh to the nearest milligram between 1 g and 1. prime it by the method / . E.I 8 square given in appendix K and coat it with coating material prepared by the method given in appendix L. temperature of 700 "Cto 7 5 0 "C over a period of about 2 h.3 Calculation. Prepare one test assembled and placedon a polishedbrass plate. by the method given in appendix J. as a Ma . In cases of disagreement.2 Meltingpot. Place the crucible in a beaker. v= 1O0 M1 NOTE.l Apparatus Sag test C. about 7 5 mm in diameter. Calculate the volatile matter.M w percentage by mass of the coating material as follows: where Mais the mass of sample in air.1.2 Calculation. A.l Procedure. Heat the dish and melting pot to between 60 o C and 70 o C above the its contents in an oven at the temperature specified in softening point.Weigh to the nearesf milligram between 1. Weigh the specimen to the nearest milligram whilst Maintain it a t that temperature for a period of not less suspended in the water. local overheating and excessive loss of vapour. the Figure 1.Suspend the moulded specimen from the diameter and 30 mm in depth.l Procedure.Carry out the determination in a tared. measuring at least 300 mm x 300 m m x 3 rnm. keeping the lid on when not stirring. Suspend the moulded specimen from the hook on a Appendix B balance using a suitable length of nylon thread. A t the end of this period remove the plate and allow it to cool to room temperature. follows: Report the filler content by ignition as a percentage by mass of the original sample of coating material. for the initial peel test. Remove all the disbonded coating and by the method given in appendix L. Repeat the test in each of the other Bend test three quarters. 1 mm/s (to produce tension in the coating) until cracking Ifthe disbonded area on each plate is less than the permitted occurs. Prepare t w o test F.1. set it to give a 12 m m H. Ignore edge effects and flaws oven at 70 f 2 OC for 72 h. If the flaw detector is not plates to cool to room temperature. pull upwards until the coating 2 5 f 1 "C in an oven for at least 6 h before testing. allow the is not greater than 8 mA.Allow the plate t o reach room are vertical to the plate.2 For test a t 0 "C. Apply the deflecting load centrally across the NOTE 2.2 Procedure.1.2. COPYRIGHT British Standards Institute on ERC Specs and 6 Standards Licensed by Information Handling Services . remove the plate.l Preparation of test specimens.45 m results obtained. Use one test plate.2. allow it to cool to room temperature and Appendix G use it for the delayed peel test.5 mm. test them imniediately. with the coated side up.3 Recording.5 mm. Then remove them and disbonded coating for impact tests at 2 5 "C.1.1 Preparation of specimens. G. In case of failures. as indicated by an electrical flaw detector area.Allow the plate t o reach room Using a stiff scraper with a sharpened square-ended blade temperature and then maintain it at a temperature of of approximately 20 m m width. breaks.1 For test a t 0 "C. centre of the plate. and adjust it to provide a voltage of coating material prepared by the method given in 1O kV so arranged that the maximum short circuit current appendix L.2 Procedure Record the area of disbonded coating for impact tests F. F.0 mm. Impact test Carry out the peel test by immersing the plate in a water bath for approximately 3 0 min at the lowest temperature G.1 but drop the the average of the maximum sags of the three lines.1 on plate by means of a 1 2 mm radius mandrel at the rate of two new plates prepared in accordance with G. in an the coated steel surface. face uppermost. Gripping the coating and blade temperature and then maintain it at a temperature of between finger and thumb. operated continuously as in F. coating material at the centre of the plate. I. make a cut through the O f 1 "Cin a refrigerator for 6 h before testing.3 Assessment and recording measuring 2 5 0 m m x 1O 0 m m x 1. Continue the deflection to a maximum distance of 38. separation through leverage and cutting had ceased to the line of breakage of the coating. Remove coating for the full width between the parallel cuts. in millimetres. so as to strike the on t w o fresh specimens. specified for the particular grade of coating material in G.2. prime them by the method given in Examine the plate for evidence of disbonding (see appendix K and coat them with coating material prepared note 1 ). blade of the scraper. repeat the test as in G. by the method given in appendix J. Record the sag of the coating material as G. until they G. Prepare four test plates.2. plates. Remove the plate quickly from the oven and subject it Measure the amount of peeling from the point where the to the impact test. With a the plate quicklyfrom the refrigerator. without further spark in air to a steel plate. For tests at O 'C. prime them brush approximately 7 5 m m long and 6 m m wide with by the method given in appendix K and coat them with bristles 6 m m long. NOTE I . and the separated coating.2 For test a t 2 5 "C. steel ball so as to strike thecoating material at a point approximately 1O0 m m along the diagonal from one Appendix F corner of the plate.5 mm. .1 . BSI B S X 4 L 4 7 8 0 m Lb24664 0 3 5 8 5 4 6 2 BS 4147 : 1980 manufacturer and the purchaser shall each repeat the test above the surface of the plate. by the method given in appendix J. A t the end of this period remove the plate from the approximately 3 0 0 m m x 3 0 0 m m x 12.1 Preparation of test specimen.3. Appendix H Report.2 Test the plates for deflection by supporting them on readily removed from the plate with little force by the use of a knife blade or similar instrument. measuring table 7. equipped with voltage indication. H. G.3 For testat25 "C. more tests can be carried out.Support the plate on a flat horizontal surface of a block of wood with the coated NOTE. 3 m m radius knife edges which are spaced on 240 m m centres. Store the second test coated specimen at approximately 6 m m distance from plate in a horizontal position. 6. E. After applying the coating material. Drop a 6 3 0 g to 650 g steel ball with a extending the parallel cuts if necesary and reporting the average well polished spherical surface from a height 2. measure its area in square millimetres. prime it by the Make t w o parallel cuts through the coating material method given in appendix K and coat it with coating approximately 2 0 m m apart and 1O 0 m m long toward the material prepared by the method given in appendix L. bath and immediately test for peel as follows. measuring approximately 3 0 0 m m x 3 0 0 m m x Fit a flaw detector with a soft metallic bristled straight 12. Carefully turn the impact test.2 Procedure Carry out at least t w o tests a t each temperature. dry it with a gentle levering action separate an approximately 1 5 mm lint-free paper towel if necessary and subject it t o the long strip of coating from the steel plate.2. Pass the flaw detector over the treatment. by the method given in appendix J. G.3 Evidence of cracking by means of a f l a w detector. the deflection producing the first Peel tests crack.I General. Proceed as in 6.if the area disbonded exceeds the maximum given in tables 5 or 7.Iand G. A t the end of this period detected prior to refrigeration.2.2.1. Disbonded coating is that which can be easily and F. the material is deemed to have passed the test. F. Prepare a test plate.1 Store the plates at O OC in a w a t e r h e bath or at O "C(see note 2) and the average of the four areas of refrigerator for a minimum of 6 h. K.5 m m to second quality standard of BS 4232.1 Method. Melt the pieces in a container of uniform from those of bitumen-based coatings and that the t w o cross section not less than 150 m m nor more than kinds of coating should not be blended in protective 300 mm in diameter. Grade C is suitable for the K. when application methods K.3 Hot-applied primers. appendices E. apply coating When the coating materials are applied externally to steel material either t o a hot or t o a cold plate consistent with pipes it is usual t o incorporate one or more reinforcing the production process under evaluation. held in a horizontal position and at a temperature between First free the surface of the steel plate from all oil and 15 'C and 30 "C. Care should be exercised to Application of coating material for the tests given ensure there is n o mixing of material from different in appendices E to H sources or of different types unless experience has shown that the final product has satisfactory properties. NOTE. If gas is coal-tar coating materials or vice versa. but may also be appendices E to H applied by flood coating. Then blast it t o a uniform steel grey finish. required. than 1 5 "C. brush of 2 5 m m width t o the plates lying in a horizontal position. apply steel pipes. when lining pipes. Stir the material frequently until it reaches the application Appendix J temperature recommended by the manufacturer. Heat O separated by at least 15 m m from the cuts for the preceding test. according t o particular it should be recognized that the chemical and the number of tests required. It is important that. reference should be made t o BS 534. in a well ventilated atmosphere having a relative humidity not greater than 60 %. coating material to the plate by the method given in appendix L. These materials are applied as mastics. NOTE 2. In Break 2 k g t o 7 kg of the coating material. layers of inert fabric. the products being protected coating material to the plate by the method given in be first coated with the specified primer. pipes. not less than 16 h nor more than 32 h after M. M. for each of the successive temperatures the container so that the coating material reaches the application temperature recommended by the specified in table 7 .4 General application. and fitted with a lid.2. prime them using the a primer coat. thickness. grease. Type 2 coating materials are by the manufacturer in such a manner that the surface is commonly used on steel when heavy duty protection is uniformly covered with an even film free from air bubbles. fittings and specials.2 Cold-applied primers material occurs in the bath and on the coated article. After preparing the steel surfaces by the coatingby hot dipping of articles which have not received method given in appendix J. It is important to ensure that blasted steel surfaces are Appendix M free fram traces of previous coating materialsand do not subsequently become contaminatedwith oil or grease. used.3 Type B primer. into pieces not greater than physical characteristics of coal-tar-based coatings differ 5 0 m m size. to trough profile is 75 f 2 5 pm. G and H as follows. When the film is hard dry. apply other than dipping are used. pour the Prepare the steel surfaces used in the tests given in coating material over the primed surface of each plate. After priming.l Type 1 materials.2 Type 2 materials. When the film is hard dry. It is convenient to adjust to this thickness immediately NOTE 1. It is also essential to clean out plant thoroughly Heating may be by any convenient method such as a when the use of bitumen coating materials follows that of fluidized or liquid bafh. not less than 1 h after application of the primer.5 m m to each test specimen. Material of grade C quality is used both for charging and K.2 TypeA primer. by centrifugal action. Agitation of type 2 andtype 3 coating materials in the molten state is necessary t o prevent settling of the filler. Type 1 coating materials are most Priming of steel surfaces for the tests given in commonly applied by dipping processes. scale and all other foreign matter to the Apply thecoating material to a thickness of 1.3 Type 3 materials. appendix L.2. All materials should be applied in compliance with the Appendix L manufacturers' instructions. coatings.l General. in such a manner that fresh enamel constantly strikes the specimen surface. F. This qualitylevel is roughly equivalenf to the near-white after coating by sweeping off the surplus hot enamel with a standard of the Steel Structures Painting Council (USA) and the warmed blade moved along guide rails set for the required Sa 2 %standardof the Swedish standard SIS 05 5900. electric hotplate or gas. They are applied externally by flood coating or Allow the primer t o dry at an air temperature of not less other means and.2. ~ ~ ~ BSI B S * 4 L 4 7 B O m lib24669 0358547 4 H BS 41 47 : 1980 Repeat this procedure. Type 3 coating materials are also designed t o provide heavy duty protection for iron and K. Immediately appendices E to H it has reached the application temperature. manufacturer within 2 h. Some hardening of this K. removing rust. Preparation of steel surfaces for the tests given in replacing the lid between intervals of stirring. Recommendations on the use of coating materials AppendixK M. thickness between the container and the gas flame. immersion in the dipping bath. Apply the primer with a clean flat bristle replenishing the bath. but which have been heated before appropriate primer specified in section two. and so that the peak 2. Hot-applied primers of type C are usualiy applied by dipping. For the protection of steel application of the primer. Apply the primer at the rate of coverage specified M. interpose a steel plate of not less than 6 m m 7 COPYRIGHT British Standards Institute on ERC Specs and Standards Licensed by Information Handling Services . making new parallel cuts. fittings and specials for water and sewage BS 1 7 9 6 Method for test sieving BS 2 0 0 0 Methods of fest for petroleum and its products Part 4 7 Solubility of bituminous binders Part 4 9 Penetration of bituminous materials Part 5 8 Softening point of bitumen (ring and ball) Part 1 7 0 Flash point by the Abel apparatus (non-statutory method) BS 3 4 1 6 Black bitumen coating solutions for cold application BS 3 9 0 0 Methods of testfor paints Part A6 Determination of flow cups BS 4 1 6 4 Coal-tar based hot applied coating materials for protecting iron and steel including suitable primers where required BS 4 2 3 2 Surface finish of blast-cleaned steel for painting BS 4 6 8 9 Method for determination of flash and fire points of petroleum products and other liquids by the Cleveland open cup CP 2 0 1 o Pipelines Part 2 Design and construction of steel pipelines in land Part 3 Design and construction of iron pipelines in land o *Referred t o in the foreword only COPYRIGHT British Standards Institute on ERC Specs and Standards Licensed by Information Handling Services . BSI BS*4L47 80 m L b 2 4 b b î 0158548 b m h Standards publications referred to BS410 Specification for test sieves ES 5 3 4 Steel pipes. Any person who. Milton Keynes MK14 6LE. Incorporated by Royal Charter. 0908 221 166. No part of this publication may be Cooperating organizations The Elements and Components (of Diverse Materials) for *institution of Structural Engineers Buildings Standards Committee. by the issue either of amendments or of revised editions. Details are for Standardization and UK sponsor of the British National available from BSI Enquiry Section a t Milton Keynes. telephone Committee of the International Electrotechnical Commission. British Standards Institution.5k. Users of British Second revision October 1 9 8 0 Standards are responsible for their correct application. BSI is the independent national body for the preparation of British Automatic updating service. were directly represented on the Convention of Scottish Local Authorities Technical Committee entrusted with the prepartion of this British Department of the Environment (Building Research Standard: Establishment.&SI. is requested to notify BSI without delay in order that Copyright. was published under the implementing the standard. amendments and withdrawn standards. and other services. 1 9 8 0 and for telex 825777.Telephone 01-629 9000 6 Telex 266933 ECB/34 8803-5-0. Princes Risborough Laboratory) Department of the Environment (Housing and Construction) British Cast Iron Research Association Department of the Environment (Interdepartmental British Gas Corporation Construction Development Group) British Ironfounders' Association British Tar Industry Association Department of the Environment (PSA) Council of Ironfoundry Associations Health and Safety Executive Federation of Associations of Specialists and Incorporated Association of Architects and Surveyors Sub-contractors Institute of Building Control Institution of Gas Engineers Institute of Quality Assurance Road Emulsion Association Ltd. BSI. ISBN O 580 1 1 4 0 2 3 Revision of British Standards. BSI. It is the UK member of the International Organization and automatic standards updating service called PLUS. Trades Union Congress British Woodworking Federation The organizations marked with an asterisk in the above list. telex 825777. Date of issue Text affected 5530 July 1987 Indicated by a line in the margin British Standards Institution . 2 Park Street London W1A 2BS . BSI provides an economic. This does not preclude the free use. individual Standards. when making use of a British Standard. The number for telephone enquiries i s 0908 220022 O British Standards Institution. consists of representatives from National Council of Building Materials Producers the following: National Federation of Building Trades Employers Agrément Board . Consumer Standards Advisory Committee of BSI together with the following. Advice can be obtained from the ' subscribing members of BSI and gives details of new publications. subsists in all BSI publications. *Institution of Municipal Engineers The Pipeline Industries Guild Individual manufacturers Amendments issued since publication Amd. type or grade designations. British Standards are revised. Enquiries should be addressed to 3 1 October 1 9 8 0 the Publications Manager. in the course of Buildings Standards Committee. through the BSI Library and Standardline Database. Technical Help supplemented each month by 8Sl News which i s available to to Exporters. First published March 1 9 6 7 Contract requirements. encounters an inaccuracy or ambiguity. B COPYRIGHT British Standards Institute on ERC Specs and Standards Licensed by Information Handling Services . ElSI B S * 4 1 4 ? 80 L b 2 4 6 6 9 0358547 8 B S 4 1 4 7 : 1980 This British Standard. Committee reference ECB/34 Draft for comment 77/13457 DC It is important that users of British Standards should ascertain that they are in possession of the latest amendments or editions. BSI offers specialist services including the provision of information Information on all BSI publications is in the 6Sl Catalogue. No. having been prepared under the direction reproduced in any form without the prior permission in writing of of the Elements and Components (of Diverse Materials) for . telex 825777. of necessary details such as symbols and authority of the Executive Board and comes into effect on size. National Federation of Roofing Contractors Aluminium Federation Royal Institute of British Architects Asbestos Cement Manufacturers' Association Royal Institution of Chartered Surveyors Brick Development Association Scottish Development Department British Ceramic Research Association *Society of Chemical Industry British Hardware Federation The Glass and Glazing Federation British Plastics Federation Timber Research and Development Association British Precast Concrete Federation Ltd. 0908 221 166. Users of British Standards are reminded that copyright the matter may be investigated and appropriate action taken. Enquiry Section. telephone revisions. when The following BSI references relate to the work on this standard : necessary. In addition to the preparation and promulgation of standards. A British Standard does not purport to First revision October 1 9 7 3 include all the necessary provisions of a contract. under whose direction this Mastic Asphalt Council and Employers' Federation British Standard was prepared. Milton Keynes MK14 6LE. Linford Wood.