API TR 17TR1:2003 pdf download

API TR 17TR1:2003 pdf download.Evaluation Standard for Internal Pressure Sheath Polymers for High Temperature Flexible Pipes.
3 DEFINITIONS AND ABBREVIATIONS
3.1 DEFINITIONS
Rw the purposes of this standard. the following definitions apply:
3.1.1 FlexIble Pipe: An assembly ola pipe body and end fittings. The pipe body comprises a composite of layered materials (polymeric and mctailic) that form a pressure containing conduit. The pipe structure allows large dcflectiuns without a significant increase in bending stresses. The term ‘pipe is used in this document as a generic term for unbonded flexible pipe.
3.1.2 Cons enlional Flexible Pipe: An unbondesi flexible pipe which is suitable lor internal fluid temperatures of up to I 34Y’C.
3.1.3 High Temperature Flexible Pipe: An unbonded flexible pipe which is suitable for internal fluid temperatures of heswccn 130 and 2(K-C.
3.1.4 Internal Pressure Sheath: The innernsi contiguous polymeric layer of an unbondest flexible pipe. designed to contain transported fluids and ensure pipe integrity
3.1.5 Candidate Polymer: A polymeric material which is proposed for use as the internal pressure sheath of an unbonded flexible pipe and is being submitted for evaluation testing.
3.1.6 End Fitting: A nwchaiiical Lksice which forms the transition between the flexible pipe body and the connector. The diflrcnt pipe layers are terminated in the end fitting in such a way as to transfer the load bctween the flexible pipe and the connector.
3.1.7 Test Temperature, Test Pressure: The temperature (T) and pressure (P) at which a test is to be run for the purposes of evaluating a candidate polymer. The choice of test temperature/pressure will depend only on the pertiwnance requiremems for the proposed application.
3.1 .8 Test Result: The outcome ofa materials test.
This may be in the fonn of a physical quantity (e.g.. Youngs modulus) or a subjective rating (e.g.. blister)
3.1 .9 Maximum Proprrt Temperature
(NIPT): The maximum temperature for which a specified property meets the performance criterion: tor example. if a candidate polymer swells 50% in oil at 165C. but only 1% at lits MPT (for compatibility with the oil) is l6rC. assuming that 1% volume swell has been detined as acceptable for the application. See Figure I.
3.1.10 Maximum Service Temperature (NIST):
The maximum temperature for which all measured properties meet the specified performance criteria. In practice, there is little point in testing above the rapid gas decompression (RGD) MPT (other than when conducting accelerated ageing based on another property). If the MPT value of another property is lower then it will give the MST. For example. if a candidate polymer has the following MPTs — RGD (190°C), tensile (>190°C), crack growth fatigue (165°C), liquid compatibility in three different fluids (180°C. >190 °C. 170°C) then the MST for the material is defined by the lowest MPT, that is. 165°C. Sec Figure 2. It is implicit that MST is significantly below candidate polymer melting point.