BS/EN 13100-1-2017 pdf download.Non destructive testing of welded joints of thermoplastics semi-finished products Part 1: Visual examination.
This BS/EN 13100-1 covers the visual examination of welds in thermoplastic materials. It may also be applied to visual testing of the Joint prior to and during the welding.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable (or its application. For dated references, only the edition cited applies. For undated references, the latest editon of the referenced document (including any amendments) applies.
EN 14728, Imperfections in thermoplastic welds — Classification
EN 16296. imperfections in thermoplastics welded joints — Quality levels
EN ISO 17637:2016, Non-destructive testing of welds — Visual testing of fusion-welded joints
(iSO 1 7637:2016)
EN ISO 17659 Welding — Multilingual terms jôr welded joints with illustrations (iSO 17659)
3 Test conditions and equipment
The illuminance at the surface, shall be a minimum of 350 lx, 500 lx is recommended.
For direct visual examination of welds, access shall be sufficient to allow the eye to be placed within a distance of 600 mm from the weld, around the whole weld and the viewing angle shall not be less than 30°
Remote visual examination of welds using mirrors, boroscopes, fibre optics or cameras shall be considered as additional requirements and shall be specified by an application standard or by agreement between the contracting parties.
If a good contrast and relief effect between imperfections and background is required, an additional light source can be used.
The equipment gauges. callipers) used for the dimensional check of the weld shall ensure the necessary precision level, in accordance with the applicable acceptance criteria.
Examples of examination equipment are given in EN ISO 17637:2016, Annex A.
4 Personnel
Visual examination of welds and the evaluation of results for final acceptance should be performed by personnel qualified and familiar with the relevant standards, rules, specifications and the weldIng procedure [1] used.
It Is recommended that personnel should be qualified in accordance with IN Iso 9712 or an equivalent standard at an appropriate level in the relevant industry sector.
5 Visual examination
5.1 General
The examination Is normally performed on welds in the as-welded condition; however, for example when required by an application standard or by agreement between the contracting parties, the examination may be also carried out at other stages during the welding process, such as for checking the weld preparation and during the welding, for evaluating the effective application of the relevant welding procedure specification [1].
The extent of examination and the acceptance criteria of the imperfections shall he defined In advance
by EN 16296. an application standard or by agreement between the contracting parties.
The examiner shall have access to the necessary inspection and production documentation required.
The classification of the imperfections can he found In EN 14728.
The terms to be used are available in EN ISO 17659.
5.2 Visual examination of joint preparation
When visual examination Is required prior to welding, the joint preparation shall be examined to check that the shape, dimensions and the cleaning conditions of the weld preparation meet the specified requirements given In the relevant standards and/or in the applicable welding procedure specification [1].
During this examination special attention should he paid to the correct fixing of the parts to he welded (e.g.: linear and angular alignment, gap).
5.3 Visual examination during welding
When required, in the case of multipass welding processes. the weld shall be examined during the welding process to check that:
a) each run is cleaned and/or scraped before It is covered by subsequent runs;
b) there are no visible imperfections (such as cracks or cavities), if imperfections arc observed, they shall be reported immediately so that remedial action can be taken before the execution of the ncxt run;
c) the transition between the runs and between the weld and the parent material is so formed that satisfactory penetration can be accomplished when welding the next run;
d) after any necessary repairs/remedial action, the weld conforms to the original requirements of the welding procedure specification.
5.4 Visual examination of the finished weld
Welds shall be examined in the as-welded condition and shall also be examined after any surface treatment (ii any).
The finished weld shall be examined to determine whether it meets the requirements of the application or product standard or other agreed acceptance criteria, on the basis of specific quality levels as defined in EN 16296.
All the imperfections that are not permissible shall be reported.
5.5 Visual examination of repaired welds
When a weld fails to comply wholly or In part with the applicable acceptance criteria and repair Is necessary. the repaired weld shall be re-examined to the same requirements as the original weld.
6 Test report
When test records are required, at least the following information shall be included in the report:
a) name of the component manufacturer;
b) name of the examining body, if different from the component manufacturer;BS/EN 13100-1-2017 pdf download.