Disclosure to Promote the Right To Information

Transcription

1 इ टरन ट म नक Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. ज न1 क अ+धक र, ज 1 क अ+धक र Mazdoor Kisan Shakti Sangathan The Right to Information, The Right to Live प0र 1 क छ ड न' 5 तरफ Jawaharlal Nehru Step Out From the Old to the New IS (2012): Welding - Test for Shop Primers in Relation to Welding and Allied Processes, Part 1: General Requirements [MTD 12: Welding Applications]! न $ एक न' भ रत क +नम-ण Satyanarayan Gangaram Pitroda Invent a New India Using Knowledge! न एक ऐस खज न > ज कभ च0र य नहB ज सकत ह ह Bhartṛhari Nītiśatakam Knowledge is such a treasure which cannot be stolen

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4 Hkkjrh; ekud osfymax osfymax,oa lec¼ çfø;kvksa ls lec¼ 'kkwi çkbejksa dk ijh{k.k Hkkx 1 lkeku; vis{kk, IS (Part 1) : 2012 ISO : 2003 Indian Standard WELDING TEST FOR SHOP PRIMERS IN RELATION TO WELDING AND ALLIED PROCESSES PART 1 GENERAL REQUIREMENTS ICS BIS 2012 B U R E A U O F I N D I A N S T A N D A R D S MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELHI December 2012 Price Group 2

5 Welding Application Sectional Committee, MTD 12 NATIONAL FOREWORD This Indian Standard (Part 1) which is identical with ISO : 2003 Welding Test for shop primers in relation to welding and allied processes Part 1: General requirements issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of the Welding Application Sectional Committee and approval of the Metallurgical Engineering Division Council. This standard is published in four parts. Other parts in this series are: Part 2 Part 3 Part 4 Welding properties of shop primers Thermal cutting Emmision of fumes and gases The text of ISO Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following: a) Wherever the words International Standard appear referring to this standard, they should be read as Indian Standard. b) Comma (,) has been used as a decimal marker while in Indian Standards, the current practice is to use a point (.) as the decimal marker. In this adopted standard, reference appears to certain International Standards for which Indian Standards also exist. The corresponding Indian Standards which are to be substituted in their respective places, are listed below along with their degree of equivalence for the editions indicated : International Standard Corresponding Indian Standard Degree of Equivalence EN ISO : 2003 Welding welding and allied processes Part 2: Welding properties of shop primers EN ISO : 2003 Welding welding and allied processes Part 3: Thermal cutting EN ISO : 2003 Welding welding and allied processes Part 4: Emmision of fumes and gases IS (Part 2) : 2012 Welding welding and allied processes: Part 2 Welding properties of shop primers IS (Part 3) : 2012 Welding welding and allied processes: Part 3 Thermal cutting IS (Part 4) : 2012 Welding welding and allied processes: Part 4 Emmision of fumes and gases Identical do do For the purpose of deciding whether a particular requirement of this standard is complied with the final value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with IS 2 : 1960 Rules for rounding off numerical values (revised). The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.

6 1 Scope This part of this European Standard specifies standardised conditions for an assessment of shop primers on the weldability of steel materials. The standard is intended to be used for assessment of shop primers by: testing by the suppliers during development of new shop primers; testing by the suppliers during production as part of a quality control scheme; declaration of the properties of shop primers by suppliers; use as a reference in contracts between suppliers and customers for deliveries of shop primers; acceptance testing of shop primers by customers. The standard can also be used for comparisons between different shop primers using the welding procedure appropriate for the task, or between the different welding procedures using a specific shop primer. For guidance on application see clause 4. 2 Normative references Indian Standard WELDING TEST FOR SHOP PRIMERS IN RELATION TO WELDING AND ALLIED PROCESSES PART 1 GENERAL REQUIREMENTS IS (Part 1) : 2012 ISO : 2003 This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN ISO :2003, Welding - welding and allied processes - Part 2: Welding properties of shop primers (ISO :2003). EN ISO , Welding - welding and allied processes - Part 3: Thermal cutting (ISO :2003). EN ISO , Welding - welding and allied processes - Part 4: Emission of fumes and gases (ISO :2003). 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply. 3.1 emission test this test describes a method for evaluating the influence of shop primers on the emission of fumes and gasses during welding 3.2 rating test this screening test provides a method of assessing the relative weldability of shop primers of a specified thickness by making a standard weld over a range of shop primers and subsequently evaluating of the severity of the resulting porosity 3.3 shop primer primer made for corrosion protection of steel in the production period. The shop primer is applied uniformly in a controlled thickness to abrasive blasted steel plates. It should be possible to weld and cut shop primed materials. The demand on corrosion protection may vary from one application to another. The term prefabrication primer is equivalent to shop primer 1

7 IS (Part 1) : 2012 ISO : supplier manufacturer of shop-primer 3.5 supplier s recommendation supplier s specification for the practical application of the shop primer 3.6 test of cutting properties this test describes a method for evaluating the influence of shop primers on thermal cutting. The test conditions and quality level have been chosen to eliminate other variables so that the speed is the variable being measured 3.7 weldability test this test describes a method for evaluating the weldability of welding consumables and shop primer combinations, using various arc welding processes. A standard size fillet is produced that enables comparison to be made. An overall assessment of the quality of the resultant weld is made 4 Guidance on application Any application shall include a reference to the part(s) of EN ISO to be used and a statement of the requirements to be fulfilled, as required. EN ISO , clause 3 and 5 apply to all applications. Applications are detailed in the following tables: Table 1 - Application for comparison of shop primers (rating), using standardised procedures Comparison of shop primers (rating) in relation to: Reference shall be made to the following part: Welding properties of shop primers Thermal cutting properties Emission of fumes and gases during welding EN ISO :2003, clause 4, Rating test. EN ISO , all clauses. EN ISO , all clauses. Table 2 - Application for comparison of different procedures (intended for application in production) for the same primer Comparison of different procedures (intended for application in production) for the same primer in relation to: Reference shall be made to the following part: Welding properties of shop primers Use test methods specified in EN ISO :2003, clause 5: Weldability test. Application not suitable for contractual purposes. Thermal cutting properties Emission of fumes and gases during welding Use test methods specified in EN ISO for the actual cutting procedures. Application not suitable for contractual purposes. Not covered by standard. 2

8 IS (Part 1) : 2012 ISO : 2003 Table 3 - Application for comparison of different primers for the same procedure (intended for application in production) Application for comparison of different primers for the same procedure (intended for application in production) in relation to Reference shall be made to the following part: Welding properties of shop primers Use test methods specified in EN ISO :2003, clause 5: Weldability test, for both primers for the actual welding procedures and compare results. Application not suitable for contractual purposes. Thermal cutting properties Emission of fumes and gases during welding See Table 1 (EN ISO specifies the use of cutting procedure intended for application in production). Not covered by standard. 5 Health, safety and environment Shop primers emit solvents during the application and curing. Further, shop primers may augment the emissions of fumes and gases during welding and cutting. Proper precautions shall be taken during application, curing, welding and cutting in order to protect the personnel involved in the testing. Environmental aspects during testing shall also be taken into account, like reduction of emissions and the use of hazardous substances. NOTE Special care is needed in particular when testing shop primers with unknown properties. 3

9 IS (Part 1) : 2012 ISO : 2003 Bibliography EN Automatically blast-cleaned and automatically prefabricated primed structural steel products. EN ISO Paints and varnishes - Corrosion protection of steel structures by protective paint systems Part 4: Types of surface and surface preparation (ISO :1998). EN ISO Paints and varnishes - Corrosion protection of steel structures by protective paint systems Part 5: Protective paint systems (ISO :1998). EN ISO Paints and varnishes - Corrosion protection of steel structures by protective paint systems Part 7: Execution and supervision of paint work (ISO :1998). EN ISO Paints and varnishes - Corrosion protection of steel structures by protective paint systems Part 8: Development of specifications for new work and maintenance (ISO :1998). 4

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