1、BRITISH STANDARD Paints and varnishes - Corrosion protection of steel structures by protective paint systems - Part 8: Development of specifications for new work and maintenance The European Standard EN IS0 129M1998 has the status of a British Standard ICs 87.020; 91.080.10 NO COPYING WITHOUT BSI PE
2、RMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW I BS EN IS0 12944-81998 STD.BSI BS EN IS0 L29qq-ENGL L978 Lb24bb 0738372 23b direction of the Sector AmdNo. Date Committee for Materiais and Chemicals, was published under the authority of the Standards Committee and comes into effect on 16 November 1998
3、 O BSI 1998 BS EN IS0 12944-8:1998 Text affected National foreword This British Standard is the English ianguage version of EN IS0 129W1998. It is identical with IS0 12944-8:1998. Together with the other seven parts of BS EN IS0 12944, it partially supersedes BS 5493 1977 which is declared obsolesce
4、nt. The UK participation in its preparation was entrusted to Technical Committee STy27, Paint systems for meMc substrates, which has the responsibility to: - aid enquirers to understand the text; - present to the responsible internationalEuropean committee any enquiries on the interpretation, or pro
5、posals for change, and keep the UK interests informed - monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN a
6、nd CENELEC Standards normally include an annex which lists normave references to international publications with their corresponding European publications. The British Standards which implement international or European publications referred to in this document may be found in the BSI Stan - environ
7、mental conditions and special stresses; - surface preparation; - different generic types of paint; - number and types of coats priming coat(s), intermediate coat(s) and top coat(s)l; - methods of application and application requirements; - place of application (shop or site); - scaffolding requireme
8、nts; - requirements regarding (future) maintenance (if any); - health and safety requirements; - environmental protection requirements. These parameters are described in detail in IS0 12944-1 to IS0 12944-7. In this part of IS0 12944, only such information is given which is considered to be particul
9、arly important to the specifier. In the drafting of a specification for maintenance work on a structure or constituent element, a decision has to be taken between - complete renewal and - partial removal of the protective paint system involved. 5 EN IS0 12944-81998 When complete renewal has been dec
10、ided, the specification should preferably be developed in accordance with a specification for new work, e.g. using the form given in annex G. At an early stage in the drafting of a project specification, a final decision will have to be taken by the specifier on essential planning parameters, such a
11、s protection of slip-resistant connections using high-tensile bolts, the inside surfaces of hollow sections and other hidden steel surfaces (see IS0 12944-3 for details of design). Exclusions, .e. items not to be painted, shall be indicated in the specification(s). The choice of protective paint sys
12、tems shall be based on practical experience and/or the results of laboratory performance tests, particularly when new coating technology is involved. The protective paint systems shall be tested for compatibility with existing coatings on previously coated surfaces. The specifier shall further take
13、into account regulations and/or requirements relating to environmental protection, health and safety, and working conditions in the shop or on site. Because national requirements concerning health and safety at work, pollution control etc. vary significantly, it may not be possible to include detail
14、ed information covering such requirements in a specification. However, the specification shall draw attention to the need to comply with current local, regional, national and international legislation and regulations. 5 Contents of a specification The items which are preferably to be covered by a sp
15、ecification are listed in tables 1 to 4, under the following headings: - Contents of a project specification (table 1); - Contents of a protective paint system specification (table 2); - Contents of a paint work specification (table 3); - Contents of an inspection and assessment specification (table
16、 4). NOTE For small structures, or those whose protection is not subject to any particular requirements, only certain items need to be taken into account. An example of a specification based on table 1 is given as annex F. NOTE Each table contains sufficient information to enable the specifier to wr
17、ite a specification for any one of the subjects listed above without having to make frequent references to the other tables. This has led to some expressions being repeated in each of the tables, for example under 1.1, 2.1, 3.1 and 4.1 the items name of project“, “name of owner“ and “name of specifi
18、er are repeated. In practice, such information should only be given once in the complete specification. 6 - STD.BS1 BS EN IS0 12744-8-ENGL 1778 U Lb24bb7 073838b 820 D EN IS0 12944-8:1998 MAIN ITEMISub-item *) Table 1 (No. Remarks 1.1.1 1.1.2 1.1.3 1.1.4 1.1.5 1.1.6 11.2 1.2.2 1.2.1 t New constructi
19、on blast-cleaned and coated 1.2.4 Name of project Name of owner LocationW of structureb) Name of specifier Environmental conditions at location(s) of structure(s1 ,t,erences to standards and regulations Maintenance TYPE OF PROJECT 1.2.5 1.2.6 1.3 New construction without protection New construction
20、and maintenance combined Items not to be coated TYPES OF STRUCTURE AND CONSTITUENT ELEMENT 1.3.2 1.3.3 I 1.2.3 Assembly methodis) Connection(s) Touch-up and final paint work 1.3.4 1.3.5 1.3.6 Galvanic couples (cells) Accessibility, e.g. manholes. Box members and hollow components 1 1.3.1 I Design I
21、I State organization and person. See annex E and IS0 12944-2. For definitions of project, structure and constituent element, see clause 3. See annexes H, I, J and K. Each project should preferably be divided on the basis of corrosion stresses and be described taking into account special design requi
22、rements. See IS0 12944-3. For example bolting, welding. See IS0 12944-3 and IS0 12944-5. See IS0 12944-3. See IS0 12944-3. See IS0 12944-S. *) These items are recommended. if, however, a particular sub-item is included in the specification any instructions in the remarks column shall be followed. 7
23、EN IS0 12944-8:1998 No. MAIN ilEM/Sub-item “1 1.4 DESCRIPTION OF EACH CONSTITUENT ELEMENT 1.4.1 Substrate(s1 1.4.2 Existing paint system and its condition 1.4.3 Areas (m2) 1.5 DESCRIPTION OF ENVIRONMENT OF EACH CONSTITUENT ELEMENT 1.5.1 Atmospheric environmental conditions 1.5.2 Special situations 1
24、.5.3 Special stresses 1.6 DURABILITY Remarks Each structure should preferably be divided into constituent elements on the basis of the protective paint system(s1 to be used and the corrosion stresses asTociated with each constituent element. cludes substrates with metallic See annex K and IS0 12944-
25、5. Descriptions are given in IS0 12944-2. See also annex E. See annex E, E.l.l. See annex E, E. 4.1. See annex E, E.4.2 (including the effects of exposure to strong UV radiation). PROTECTIVE PAINT SYSTEMS - PARTiCULaR CONSTWBINVS WITH RESPECT TO SURFACES AND SURFACE PREPARATION 1.7.1 1.7.2 1.8 1.8.1
26、 1.8.2 1.8.3 See IS0 12944-1. Details of types of surface, surface preparation grades, surface profiles and surface preparation methods can be found in IS0 12944-4. In the specification, the required surface preparation grade shall be given for each individual protective paint system to be used. Typ
27、es of surface and surface preparation grade(s) for new work and maintenance Besides the surface preparation grade, the specification shall give details of the surface preparation work required. See also annexes G and H and table 3. Surface preparation method(s1 See IS0 12944-4 PROTECTIVE PAINT SYSTE
28、MS - PARTICULAR CONSTRAINTS WITH RESPECT TO PAINT MATERIALS Protective paint systems for new, touch-up and maintenance work Particular constraints relating to coatings and paint work See IS0 12944-5, IS0 12944-7 and annexes G, H and table 2. For example: compatibility with existing coatings, . edge
29、protection (see IS0 12944-5 and IS0 12944-71, non-skid coatings or spraying with airless rather than conventional equipment. For example: low level of harmful substances, protection against pollution by such substances, waste disposal Special requirements regarding, in particular: - health and safet
30、y - environmental protection “1 These items are recommended. if, however, a particular sub-item is included in the specification any instructions in the remarks column shall be followed. 8 STD-BSI BS EN IS0 12744-8-ENGL 1198 m Lb24bb7 O738388 bT3 W No. I MAIN ITEM/Sub-item *) * m * Remarks EN IS0 12
31、944-8:1998 1.9.1 WORK Location of paint work: Workshop and/or on site See IS0 12944-7. I I 1.9 I PROTECTIVE PAINT SYSTEMS - PARTICULAR CONSTRAINTS WITH RESPECT TO PAINT Conditions for paint work Method of application of protective paint systems for new, touch-up and maintenance work Constraints rela
32、ting to paint work Special requirements regarding, in For example: timetable and climatic conditions (to be taken into account by the operator). See also IS0 12944-7. See IS0 12944-7. Any particular requirements shall be given. Special methods of application shall be described in full detail. For ex
33、ample: compatibility with existing coatings, masking of areas to be welded (see IS0 12944-71, edge protection (see IS0 12944-5 and IS0 12944-7). For example: low level of harmful substances, 1.9.2 Colours 1.9.3 Coiour should preferably be based on colour designations such as those of the Munsell Col
34、our System, RAL 840 HR, NF X 08-002, BS 4800, NS 4054, UNE 48103, JPMA Standard Paint Colours or NCS, in accordance with the relevant national standard where applicable. The colours of all coats of a paint system should normally be different from each other. The last but one coat should normally be
35、of such a colour that the top coat fully hides it. 1.9.4 1.10.2 1.9.5 Stability of top-coat colour See also No. 1.5.3, this table. 1.11 particular: - health and safety - environmental protection QUALITY MANAGEMENT protection against pollution by such substances, waste disposal. 1.11.1 1.12 I I 1.10
36、I PROPERTIES (OTHER THAN ANTI-CORROSIVE) OF PROTECTIVE PAINT SYSTEMS Quality control, quality assurance and records INSPECTION AND ASSESSMENT See table 4. 1.10.1 1.12.1 1.12.2 Inspection by internal bodies Inspection by external (e.g. independent) bGdies Names of external inspection bodies and/or th
37、e inspectors themselves Such bodies and/or inspectors, if any, shall be nominated by the specifier. 1.12.4 1.12.5 Methods of inspection The specifier shall indicate the methods and types of instrument required, using International Standards, wherever possible. The specifier shall also indicate the r
38、ecording and reporting procedures to be used. Details of inspection steps, if any, shall be described. Inspection steps 1.12.3 *) These items are recommended. if, however, a particular sub-item is included in the specification any instructions in the remarks column shall be followed. 9 STD-BSI BS EN
39、 IS0 12944-8-ENGL 1778 - ZL29bb7 0738389 53T = EN IS0 12944-8:1998 1.13.2 1.13.3 No. MAIN ITEMEub-item *i I Remarks manufacturer, sub-contractors and main contractor. See IS0 12944-7 and annex B. Responsibility for records Location and number of reference area fs) 1.13 I REFERENCE AREAS 1.13.1 I Rec
40、ords I The specifier should normally specify for which 1.14 HEALTH AND SAFETY; 1.14.1 Applicable regulations ENVIRONMENTAL PROTECTION I 1.15 SPECIAL REQUIREMENTS 1.15.1 Procedure for dealing with deviations from the specification, limits of inspection and assessment execution and supervision of pain
41、t work 1.15.2 Special factors related to 1.15.3 Any further requirements Requirements concerning transport, loading and unloading, and storage shall be indicated, if any. 1.16 MEETINGS Details of prebid and kick-off meetings should preferably be specified. The purpose of the kick-off . 1.16.1 Prebid
42、 meeting and kick-off meeting r1.13.4 I size of reference area(s) I 1.17 1.17.1 I 1.13.5 I Markina of reference area(s1 I DOCUMENTATION Documents on surface preparation The regulations applicable on site shall be observed. If appropriate, these shall be described by the specifier. See IS0 12944-7. S
43、hall be specified by the specifier. Shall be Specified by the specifier. II meeting is to settle any remaining questions concerning paint work (see annexes C and D) and I I I whether Dreviouslv coated surfaces are acceotable. Types of document required shall be specified, as appropriate, by the spec
44、ifier. and protective paint system(s)/ paints comprising information. on - paint work - constraints, see main items 1.7 to 1.9, this table - properties, see main item 1.10, this table - inspection and assessment - reference areas - other aspects “1 These items are recommended. If, however, a particu
45、lar sub-item is included in the specification any instructions in the remarks column shall be followed. 10 STD-BSI EIS EN IS0 12944-8-ENGL 1798 1111 Lb24bb7 0738370 i251 MAIN ITEM/Sub-item 9 EN IS0 12944-8:1998 Remarks Table 2 - Contents of a protective paint system specification Name of projet Name
46、 of owner Name of specifier 2.2.1 State organization and person. 2.2.2 2.2.3 2.2.4 2.3 2.3.1 2.3.2 2.3.3 2.4 2.4.1 STEEL DRESSING Edges 2.4.2 See IS0 12944-3. Steel surface imperfections Irregularities in welds Welding areas for welding on site See IS0 12944-3. See IS0 12944-3 and IS0 12944-7. Surfa
47、ce preparation grade(s1, including preparation of remaining coatings See IS0 12944-4. Further details on cleaning, degreasing and contaminants, and the condition of any existing coating shall be provided. Surface profile (roughness) See IS0 8503-1 to IS0 8503-4. Welding areas for welding on site See
48、 IS0 12944-3 and IS0 12944-7. *) These items are recommended. If, however, a particular sub-item is included in the specification any instructions in the remarks column shall be followed. Description of protective paint system(s) in accordance with annexes G and H 11 See annex A and IS0 12944-5, IS0
49、 12944-6 and IS0 12944-7. Edge protection Overcoating interval(s) Technical data sheets and safety data sheets for paint materiais Performance test results Requirements regarding overcoating intervals are to be indicated. See also manufacturers technical data sheets and instructions for application. These data sheets are prepared and provided by paint manufacturers. Results of laboratory tests in accordance with IS0 12944-6 and/or other suitability tests are to be provided. EN IS0 12944- - to check that data provided by a manufacturer or contractor are cor
