We continue to provide technical support and certification services in all applications with brazed manufacturing…
Brazer Performance Qualification Test Certificate, BPQTC
BPQTC certificate is a document confirming that a person who passed the performance qualification test/exam. This certificate, which is prepared according to “TS EN ISO 13585 (2012): Brazing – Qualification test of brazers and brazing operators” standard, includes test variables, test conditions, and approved performance specifications.
Brazing Procedure Qualification Record, BPQR
A BPQR report is a document showing that the brazed connection produced is suitable for welding method, material group, additional metal, consumables etc. according to the relevant standards, necessary destructive/non-destructive examinations/tests are performed, and the results are in the required competence.
It is an approval of a preliminary Brazing Procedure Specification (pBPS) according to “EN 13134 (2004): Brazing – Procedure approval” standard; becoming Brazing Procedure Specification (BPS). Briefly, BPS and BPQR are documents that cover all necessary brazing parameters, verify and guarantee a brazing procedure.
In the examination of brazed joints, firstly, “visual inspection” is applied according to “EN 12799 (2000): Brazing- Non- Destructive examination of brazed joints” standard, and the following characteristics of the brazed joint are considered: Paste/flux residue, dimensional mismatch, lute continuity, lute concavity, excessive filler metal, erosion, uniformity. If necessary, macro-examination is performed by cutting the brazed joint; in this case, visual inspection can become a “destructive testing”.
After visual inspection, “metallographic examination” is applied according to “EN 12797 (2003): Brazing- Destructive tests of brazed joints” standard. Additional examinations / tests specified in EN 12797 (2003) and EN 12799 (2000) standards may be applied depending on the type of brazed connection produced and the service conditions. In cases where the additional examinations/tests specified here are also insufficient, other appropriate tests may be applied.
Inspection/test results are evaluated according to “EN ISO 18279 (2004): Brazing – Imperfections in brazed joints” standard. In this standard, guidelines and recommended incompatibility limits are given for the classification and quality levels of incompatibilities that may occur in brazed joints.
As TEKNOLAB®, in our accredited laboratories according to TS EN ISO / IEC 17025 standard, we provide destructive / non-destructive inspection and test services to brazer and brazing operator certification institutions and brazing procedure approval institutions.
TS EN ISO 13585 (2012): Brazing – Qualification test of brazers and brazing operators
TS EN 13134 (2004): Brazing – Procedure approval
TS EN 12797 (2003): Brazing- Destructive tests of brazed joints
TS EN 12799 (2000): Brazing- Non- Destructive examination of brazed joints
TS EN ISO 18279 (2004): Brazing – Imperfections in brazed joints