API SPEC 15LR:2001(2013) pdf download

API SPEC 15LR:2001(2013）pdf download.Specification for Low Pressure Fiberglass Line Pipe.
In each range of size the manufacturer may elect at its option to test a smaller product size to qualify only the smaller size,
5.7.2 Short.Tlme Hydrostatic QualificatIon Pressure Tests
Short-time hydrostatic qualification pressure tests to determine compliance with 5.6a shall be performed with unrestrained ends at ambient temperature. The pressure shall he applied unutorTnly and continuously until thc desired pressure is reached, in a time of no less than 60 seconds.
5.7.3 CyclIc 01 Static Pressure Test
a Using the cyclic test data or static test data and regression analysis as developed fix the pipe. following ASTM 1) 2992. Procedure A or B. construct a regression line convening the stress (or strain) versus cycle data or stress (or strain) versus time data to pressure versus cycle or time data for pipe of the intended pressure class.
b. For cyclic pressure tests, the gauge pressure at the peak pressure of the cycle shall he not less than I 1/2 nor more than 2 times the pressure rating of the fitting. The cycle amplitude pressure shall be at least X0% of the selected peak pressure.
c. For static pressure tests, the gage pressure shall be no less than 2 1/2 times and no more than 2 3/4 times the fining static pressure rating.
d. Test each component specimen as required above with unrestrained ends in accordance with Test Methods of ASThI D 2143 for cyclic tests and ASTM D 15914 for static tests, at a lest temperature of l5OF, For components which are to be used at higher temperatures. the higher temperature shall be used.
e. ‘The number of cycles or hours to failure for the coniponeat must be no less than that predicted by the HOB line lower 95 prediction limits of the corresponding pipe.
5.7.4 Degree of Cure
All fittings. couplings and connections tested in accordance with 5,7 after the effective date of this Seventh Edition of API Spec I5LR chall have DSC’ data on each sample in accordance with Appendis B.
5.8 REQUALIFICATION TESTS FOR FITTiNGS, COUPLINGS, CONNECTiONS AND
ADHESIVES
The qualification tests of 5.7 shall be repeated after any change as described in Appendis F.
6 Quality Control Tests
6.1 PIPE
6.1.1 Miii Pressure Test
Pipe shall be tested following the sampling plan of Appendix D at a pressure of not less than 1,5 times the calculated cyclic pressure rating. All mill jointers shall be hydrostatically tested.
6.1.2 Lot of Pipe
A lot of pipe shall consist of 5,000 feet or fraction thereof of one site, wail thickness and grade in continuous production.
6.1.3 Pressure Test Frequency
The shori-tcnn cyclic pressure test or the short-time hydrostatic tiilurc test per 5.2.1 shall be conducted at a minimum frequency of’ one test per lot
6.1.4 Degree of CureTest Frequency
The test for degree of cure (Tg) per 4.2 and 4.3 shall he conducted at a minimum frequency of one test per lot
6.1.5 Retests
II’ any test specimen of the tests specifically mentioned in 5.2.1. 6.1 and 6.2 tails to conft,nn to the specified requirements. the manufacturer may elect to reject the entire lot or make retests oil two additional lengths from the same lot. If both of the retest specimens conform to the requirements, all of the lengths in the lot shall be accepted. except the length from which the initial specimen was taken If one or both of the retest specimens fail to conform to the specified requirements, the manufacturer may elect to test individually the remaining lengths in the lot, in which case determinations are required only for the particular requirements with which the specimens lailed to comply in the preceding tcsL
6.2 FITTINGS—MiLL PRESSURE TESTS
All fittings except bushings and flanges shall be hydrotested or pneumatic tested at a pressure no less than I .5 times its cyclic pressure rating.
7 Dimensions and Lengths
7.1 PIPE
7.1.1 Dimensions
Fiberglass pipe shall he furnished in sizes shown in Tables I and 2 as specified on the purchase order.