Nalkis Life cycle A standard is reviewed every 5 years 00 Preliminary. It is primarily intended for offshore applications on both fixed and floating topsides facilities, but it can also be used for the specification, manufacture, testing and installation of GRP piping systems in other similar applications found onshore, e. Previous Topic Index Next Topic. Dave DiehlRichard Ay.
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Page 1 of Printed in the Netherlands 2. What is ISO ? ISO , is an international standard dealing with the qualification of fittings, joints and pipes for certain applications.
Part 2: Qualification and manufacture. Part 3: System design. Part 4: Fabrication, installation and operation. Each part is therefore aimed at the relevant parties involved in that particular case. Photo 1. Together these specifications cover all design and installation aspects. Main users of the ISO document are: governments, end users, engineering companies, inspection companies, manufacturers, installers.
The advantages of the ISO standard are: - Standardizing principles, norms, working methods. The disadvantages of the ISO standard are: - Needs thorough studying, the standard is certainly difficult. Page 2 of Printed in the Netherlands 3. Part 1: Vocabulary, symbols, applications and materials First part of the ISO gives the terms, definitions and symbols used.
Main objective of this chapter is to achieve that every body speaks the same language. The reinforcement shall be glassfiber, e. The minimum wall thickness shall be 3 mm for sizes 4 inch and above. The test consists out of at least 18 samples. The test pieces are plain end pipes. The test setup is a closed end pressure vessel. Pipe samples are subject to different pressures.
The test medium is water at 65 degrees C. The required failure mode is weeping. The failures shall be in different decades. Figure 2 gives an example of a regression line. Figure 2. Page 3 of Printed in the Netherlands Each product family pipe, elbow, reducer, tee, flange is divided into product sectors. Two representative samples, usually the biggest diameter and highest pressure class, from each product sector are taken and fully tested according ASTM hrs at 65 C.
The test medium is water. The representative samples are called the product sector represen- tatives. For calculation of the test pressure, the regression line of the pipe or the fitting is used. In absence of a regression line, a default value can be obtained from a table given in the ISO. For details on the calculation see the ISO document. In general the hr test is performed at about 2. So a 20 bar system is tested around 50 to 60 bar.
A product sector contains all the items within its diameter and Table 1. Overview of product sectors pressure range, the so called component variants. Component variants are qualified by either two hr tests or through the scaling method.
ISO 14692 1 PDF
Quick Guide to ISO-14692