API RP 15S:2006 pdf download
API RP 15S:2006 pdf download.Qualification of Spoolable Reinforced Plastic Line Pipe.
4.2 MATERIAL.S SELECTION
The manufacturer shall be responsible tbr the selection and supply of all materials so that they meet the specified service and installation requirements.
4.2.1 Polymeric Liner
The liner shall maintain its integrity throughout the lifetime of the pipe for the specified fluids under the given service conditions. The manufacturer shall document materials propenies. and the efkcts of service conditions on those properties, including:
absorption of species from the carried fluid: leaching of low molecular wright material or plasticiser from the polymer chemical changes to the molecular structure of the polymer: and environmental stress cracking. This RP qualifies the performance of the liner by a series of qualification tests based on current industry best practice.
Material qualification data shail be documented as agreed between the manufacturer and the purchaser. (iuidance within Table II of API Specification I V is useful in this respect. and the manufacwrer should provide a summary of this test data for each liner material. For applications where gas or volatile components may be present under pressure. the liner polymer itself shall have adequate resistance to blistering.
The most common liner material is Ph. Only established ‘pipeline’ grades shall be employed, namely Ph 84) or Ph 100 materials as defined by EN 12202 and EN 1555. or equivalents as defined by ASTM 03350.
Other liner materials, such as crosslinked polyethylene (PEX), pohyatnide (PA), and polyvinylidene fluoride t PVDfl, may be used provided that they conform to the material requirements of a relevant pipe standard. e.g. ISO 14531-I for PEX and ISO 10931-2 for PVDF, and that fitness for purpose has been established- The manufacturer shall provide data, where applicable. reLating to mechanical behavior, thermal behavior, permeability and fluid compatibility, following relevant national and international standards.
Fusion joints in a PE liner shall be acceptable so long as they are made according to the manufacturer’s written procedure. which shall be consistent with ISO 11414 or ASTh4 D2657. The manutlicturer shall demonstrate that the properties of the joint are equal to those of the parent pipe. Suitable QA checks shall be included in manufacture to control the fusion process. The position of all fusion joints shall be recorded by the manufacturer.
4.2.2 Structural Layer
Ihe structural layer, including any bonding agents. shall sustain its integrity throughout the lifetime ot the pipe under the given service conditions. The manufacturer shall provide the test data that demonstrate the short term and long-tern load-bearing capabilities of the layer, and the temperature capabilities, required fluid compatibility and aging characteristics of all materials employed. This RP qualifies die performance of the structural layer by a series ofqualiflcation tests based on current industry best practice. Where “dry” glass fibers are employed as the structural layer. the additional requirements of Appcndix A shall apply.
4.2.3 Cover Materials
The cover shall sustain its function throughout the lifetime of the pipe for the specified service conditions. The resistance to instillation loads and environmental conditions (UV wear etc.) shall he documented if required by the application or by the purchaser.
5.1 PRESSURE RATING OF PIPE
5.1.1 Definition of Product Family
Similar products shIl be divided into product families, each product family being a range of product sizes and pressure ratings which have the same regression slope.
A product family representative with an internal diameter of at least 2 in. shall be tested in accordance with 5.1.2 to determine the regression slope fo the product family. A product family size range may extend 2 in. (51 mm+4 in, (102 mm) from the family representative.
All products within a product family shall be termed product variants and qualified according to 5.1.3. Product variants shall be manufactured with the same material types. production process and process controls, and reinforcement arvhiiceturc as the product family representative. Changes to any of these parameters will require re-qualification in accordance with 5,4.
