ISO-11082-1992.pdf
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1、INTERNATIONAL STANDARD IS0 11082 First edition 1992-l l-l 5 Certification scheme for welded fabric for the reinforcement of concrete structures Syst - internal inspection by the manufacturer (see clause 5); - inspection and supervision by an external body (see clause 6). 2 Normative references The f
2、ollowing standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publica- tion, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard ar
3、e encouraged to investigate the possibility of applying the most re- cent editions of the standards indicated below. Members of IEC and IS0 maintain registers of cur- rently valid International Standards. IS0 6935-3:- ), Steel for the reinforcement of con- crete - Part 3: Welded fabric. IS0 9002: 19
4、87, Quality systems - Model for quality assurance in production and installation. I) To be published. ISO/IEC Guide 39:1988, Genera/ requirements for the acceptance of inspection bodies. ISO/IEC Guide 40:1983, General requirements for the acceptance of certification bodies. 3 Definitions For the pur
5、poses of this International Standard, the following definitions apply. 3.1 certification scheme: Certification system as related to specified products, processes or services to which the same particular standards and rules, and the same procedure, apply. lSO/lEC Guide 21 3.2 certification body: Body
6、 that conducts certi- fication of conformity. lSO/lEC Guide 21 3.3 characteristic value: Value having a prescribed probability of not being attained in a hypothetical un- limited test series. ISO 89301 NOTE 1 Equivalent to fractile, which is defined in IS0 3534. 3.4 fabric type: Fabric with wires an
7、d wire arrange- ments of one kind, however with variable length and width. 3.5 inspection: Activities such as measuring, ex- amining, testing, gauging one or more characteristics of a product or service and comparing these with specified requirements to determine conformity. ISO 84021 3.6 inspection
8、 body (for certification): Body that performs inspection services on behalf of a certi- fication body. lSO/lEC Guide 21 1 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 03:25:21
9、 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 11082:1992(E) 4 Suitability testing 4.3.2 Sampling and testing of specimens 4.3.2.1 General 4.1 Purpose The purpose of the suitability testing is to ensure that the manufacturer has the capability and resources to produce
10、 welded fabric in accordance with the re- quirements specified in the product standards. 4.2 Organization The certification body shall comply with the require- ments of ISO/IEC Guide 40. 4.3 Procedure Suitability testing consists of the following stages: - inspection of conditions for production (4.
11、3.1); - sampling and testing of specimens (4.3.2); - verification of the long-term quality level (4.3.3). If satisfactory results are not achieved in one stage, all the stages shall be repeated. Suitability testing ap- plies separately for each type of fabric and each method of welding. If a fabric
12、type is manufactured by various welding processes, suitability testing shall be carried out to its full extent for each of these pro- cesses. 4.3.1 Inspection of the production conditions Inspection of the production conditions shall include the following: - the competence of the personnel and satis
13、factory organization of the work; - the adequacy of the equipment for production; - the independence of the department responsible for quality assurance from the production depart- ment; - the suitability of the test equipment for internal testing; - the ability of the manufacturer s quality system
14、to ensure the quality of the products. A quality sys- tem according to IS0 9002 is considered satisfac- tory. The inspection report shall include an evaluation of the activities from receipt of wire to dispatch of fabric. NOTE 2 The wire should be subject to a separate certi- fication scheme, accord
15、ing to IS0 10144. The test samples shall be taken from the production of the plant concerned. The test shall cover the entire range of diameters, grades and spacings for which certification is applied. 4.3.2.2 Extent of sampling and testing Three different fabric types shall be tested. For each sele
16、cted type, at least 30 test pieces shall be taken at random from at least 5 tons of a lot, to determine each mechanical and geometrical property specified in the product standard. The samples shall be taken at random from the lot presented for testing by a representative from the inspection body. Ca
17、re should be taken to ensure that the specimens taken generally reflect the properties of the fabric. 4.3.2.3 Properties to be tested All properties specified in the product standard shall be tested and compared with its requirements. 4.3.2.4 Evaluation of the test results The results (individual va
18、lues, average values, stan- dard deviations) of the tests shall be collated in a, test report. 4.3.2.5 Approval Once the test results have been evaluated positively by the certification body, a works symbol and an ap- proval to produce for a specific period are granted to the manufacturer. During th
19、is period the long-term quality level shall be verified. 4.3.3 Verification of the long-term quality level 4.3.3.1 Extent of testing In order to verify the long term quality level, the manufacturer shall perform an increased number of tests (internal and external inspection) for a suffi- ciently lon
20、g period (between 6 months and 1 year). The manufacturer shall double the extent of testing specified .in 5.2.1 .I for the internal inspection. During this period, external inspection shall be carried out more intensively than specified in 6.3. 4.3.3.2 Evaluation At the end of the period specified i
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