ISO 24568-2021 pdf free download – Aerospace — Metric series pipe coupling 8°30′ up to 28 000 kPa dynamic beam seal — Technical specification.
6 Quality assurance
6.1 Product qualification
The qualification procedure for aerospace standard products (e.g.according to EN 9133 or another inaerospace accepted and established qualification procedure) shall be used and documented accordingto the specified tests if not otherwise agreed between customer and supplier.
The manufacturer’s operations shall be an approved production organisation for aerospace productsand shall demonstrate that it has implemented and is able to maintain a quality management system(e.g. according to EN 9100 or another in aerospace accepted and established quality managementsystem).
Qualification obtained for tees also covers that of elbows and crosses.
6.2Quality control records
The manufacturer shall maintain a record of inspection applied to each production batch for a minimumof 5 years. Records of chemical composition analysis, mechanical property tests showing conformancewith the applicable material specification and metallurgical tests shall be made available to thepurchaser (user) of each delivery batch of coupling parts upon request.
Each delivery batch shall be traceable to its production batch.
6.3Acceptance conditions
The acceptance of a delivery batch shall be in accordance with 5.2 to 5.7.
Non-destructive tests for inspection of threads, finish, dimensions, marking, surface defects shall beconducted on a sampling basis in accordance with ISo 2859-1.
a) Classification of defects
Defects are classified in Table 7 according to the effect they have on safety and usability. Definition ofclasses shall be in accordance with ISO 2859-1.
b)Level of inspection
The following acceptable quality levels (AQL) shall apply to the defect classifications shown in Table 7.Failure class major: AQL 1,5
Failure class minor: AQL4,0
All defects not identified in Table 7 shall be inspected in accordance with the “minor defect”classification,AQL4,0.
6.4Rejection
Parts subjected to non-destructive tests and failing to conform to the requirements of these tests shallbe rejected. Parts identified as having major defects during acceptance test require a rejection of allparts as above. Parts identified as having minor defects require the definition of a procedure by thequality assurance department of the purchaser (user).
6.5Purchaser’s (user’s) quality control
The purchaser (user) may, on receiving of a delivery batch, proceed to inspect it by using the methodsspecified in 5.2 to 5.7, in full or in part, to ensure that the items conform to the required quality level,and to determine whether the delivery batch is acceptable.
This inspection may be carried out in the purchaser’s(user’s) factory, or by special agreement with themanufacturer, in the manufacturer’s factory.
7Preparation for delivery
7.1Cleaning
Before packaging, all parts shall be free from grease, oil, dirt or other foreign matter. No preservativecompound shall be applied.
7.2Preservation and packaging
Prior to packaging, couplings or their assembled components shall be protected by capping allthreaded ends and pipe attachment ends with caps or plugs to avoid the introduction of foreign matter.Appropriate choice of plastic material, thread tolerances and design of caps/plugs shall prohibitcontamination and damage to the dynamic beam seal during transportation or storage.
The parts shall be packed on cardboard flats tightly enclosed by a transparent bag (skin package) toensure protection from damage.Each flat shall be pre-printed or a label affixed for identification.As analternative, the parts may be packaged in polyethylene bags with enclosed identification labels or thebags may be pre-printed with the identification.ISO 24568 pdf download.