BS 5289-1976 Code of practice Visual inspection of fusion welded joints
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6BF7CEB5D05C4F00ACE61C51B30122C1 |
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0.56 |
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12 |
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日期： |
2024-6-23 |
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BSI BS*5Eacl ?b ■ □ロトヨ57a! ロ 丒,BS 5289 :1976,UDC 621.791.05 : 621.791.5/.8 : 620J11.1,Confirmed January 1983,Code of practice,Visual inspection of,fusion welded joints,Code de bonne pratique concernant,^inspection visuelle des joints soudes par fusion,Richtlinien fur die Sichtpriifung von SchmelzschweiBverbindungen,British Standards Institution,Copyright by the British Standards Institution,Mon May 22 13:26:29 2000,BSI BS*SEflcl 7b ■ IbSMbbT ロdトヨ57吁 B ■,BS 5289 : 1976,Contents,Page Page,Foreword Inside front cover Appendices,Code drafting technical committee Back cover A. Notes on visual acuity 8,B. Electrochemical marking 8,1. Scope ?,2. References 1,3, Aids to visual inspection 1 Figures,4. Measuring devices 1 1. Example of contour gauge,5. Before welding 2 2. Example of fillet weld gauge,6. Intermediate inspection 2 3. Root defects,7. After welding 2 4. Contour defects,8. Repairs 7 5. Weld dimensions,9. Inspection of completed fabrication 7 6. Undercut,10. Inspection records 7 7. Overlap,11. Macro-examination 7 8. Cracking in completed welds,1,2,3,4,5,6,6,6,This code of practice represents a standard of good,practice. Compliance with it does not confer,immunity from relevant legal requirements, including,regulations and byelaws.,Foreword,This British Standard code of practice is a companion,publication to the series of standards dealing with,methods for the non-destructive testing of welds. All,welds should be inspected visually as this is the most,elementary method of non-destructive testing but much,experience is required for it to be effective. When and,where visual inspection is to be carried out should be,detailed in the relevant application standard, which should,be read in conjunction with this code of practice.,Similarly, standards of acceptance are not given as these,also should be covered in the appropriate application,standard or be agreed between the contracting parties.,In reading this code of practice it should be assumed that,the article or material concerned is of approved quality,and is suitable for welding.,In general fabrication work, grossly defective welds can,usually be detected as a result of visual inspection alone,but for some applications more sophisticated aids are,available. Visual inspection is often followed or,supplemented by some other testing method in orderto,examine completely a welded article or structure.,Copyright by the British Standards Institution,Mon May 22 13:26:48 2000,BSI BS*5Eflcl 7L ■ IbEMbbT 0Db35fi0 ワ丒,BS 5289 :1976,British Standard Code of practice,Visual inspection of fusion welded joints,1 Scope,This code of practice relates to the visual inspection of,. fusion welded joints, including the methods of measuring,the various parameters and features of a weld and how,these are recorded.,2, References,The titles of the British Standards referred to in this,standard are listed on the inside back cover.,3. Aids to visual inspection,Aids ta visual inspection should be used whenever,practicable to facilitate the assessment of imperfections,-or the examination of welds not directly visible. These,aids may be in various forms depending on the type and,location of the weld being examined (see appendix A).,For local examination of a weld that is directly visible to,the eye, a small hand lens used in conjunction with a pen,torch while varying the direction of the light is usually,very revealing. In such cases the hand lens should have a,magnification of from 2 diameters to 2% diameters (see,appendix A).,End view,of gauge,4. Measuring devices,When it is required to measure the dimensions of a weld,preparation, a weld or an imperfection, the following,devices, alone or in combination, should be used:,(a) straight edge;,(b) rule;,(c) protractor;,(d) calipers: internal, external or vernier;,(e) height or depth gauge;,(f) contour gauge (see figure 1);,(g) fillet weld gauge (see figure 2).,For repetitive work it is usually preferable to have special,tempfates and gauges made for ease of checking weld,profiles and dimensions on a go, NO-GO basis.,To take measurements of a weld that is not directly,visible or of a weld where access for a measuring device is,restricted, modelling clay* or cold setting resins or rubbers,may be applied to the joint to obtain an impression of the,weld and the replica can then be measured after removal,(see also BS 5166). Figure 1. Example of contour gauge,*'Plasticine' is one product that is suitable.,1,Copyright by the British Standards Institution,Mon May 22 13:26:49 2000,BS 5289 : 1976,bsi Bs*saan ?l ■ lL2MLbn DDLBSfll 0 ■,5. Before welding,5.1 Before welding commences, the inspector should:,(a) have knowledg……
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