ISO 12290:2000 pdf download

ISO 12290:2000 pdf download.Aerospace- Rivets, solid, in titanium ortitanium alloy -Procurement specification.
3.14
sampling plan
plan according to which one or more samples are taken in order to obtain information and to reach a decision, if possible
3.15
acceptance quality limit
AOL
maximum percent defective (or the maximum number of defects per hundred units) that, for purposes of sampling inspection, can be considered satisfactory as a process average
NOTE Variant: quality limit which in a sampling plan corresponds to a specified but relatively high probability of acceptance.
4 Quality assurance
4.1 General
4.1.1 Approval of manufacturers
The manufacturer shall conform to the quality assurance and approval procedures defined in ISO 9002. The purpose of these procedures is to ensure that a manufacturer has a quality system and is capable of continuous production of solid rivets complying with the specified quality requirements.
The approval of the manufacturer shall be granted by the Certification Authorities, or their appointed representative, who may be the prime contractor.
4.1.2 Acceptance of solid rivets
The purpose of acceptance inspection and tests of a solid rivet is to check, as simply as possible, using a method which is inexpensive but the most representative of the actual conditions of use, with the uncertainty inherent in statistical sampling, that the solid rivets satisfy the requirements of this International Standard.
Acceptance inspections and tests shall be carried out by the manufacturer, or under his responsibility. The manufacturer is responsible for the quality of the solid rivets manufactured.
4.2 Acceptance inspection and test conditions
Acceptance inspections and tests (requirements, methods, numbers of solid rivets) are specified in Table 1. They shall be carried out on each batch. Solid rivets shall be selected from the batch to be tested by simple random sampling.
Each solid rivet may be submitted to several inspections or tests, provided that none of its characteristics to be verified has been previously altered during any of these inspections or tests.
The solid rivets to be subjected to destructive inspections or tests may be those on which non-destructive inspections or tests have been carried out.
Batches declared unacceptable after the acceptance inspection shall be resubmitted for acceptance only after all the defective units have been removed and/or defects have been corrected.
In this case, the attribute(s) which caused the rejection shall be verified using a sample of twice the normal size with the same acceptance limit.
If the reason for rejection results from the method, the test apparatus or from faulty heat treatment which can be rectified in a satisfactory manner, the tests may be repeated after elimination of the cause, provided that any surface treatment be removed prior to heat treatment, without being detrimental to rivet final use. A note to this effect shall be added to the corresponding inspection documents.
Unless otherwise specified, the test temperature shall be the ambient temperature.
4.3 Use of “Statistical process control (SPC)”
When a characteristic is obtained by a controlled statistical process, the manufacturer has the possibility, in order to declare conformity of the characteristic, of refraining from the final systematic sampling provided for in this International Standard, if he is capable of formally justifying this choice by using ISO/TR 13425 and the standards quoted in it as a basis.
This justification will include the following phases:
analysis of the product’s key characteristics;
analysis of the risks for each implemented process;
— determination of the parameters and/or characteristics to be respected under SPC;
— determination of the capabilities of each process;
drawing up an inspection plan and integration in the manufacturing process;
— drawing up of routes and control charts (ISO 7966, ISO 7870, ISO 8258);
— use of control charts for data consolidation;
— determination of the audits to be run and the control to be carried out to ensure reliability of the device.
To be usable in production, this process shall be or should be validated beforehand by the qualifying body, either during the qualification phase, or a posteriori according to the case, by analysing the justificatory file and the results of the qualification inspections such as provided for in clause 5.
5 Requirements and test methods
See Table 1.