API SPEC 15LR:2001 pdf download

API SPEC 15LR:2001 pdf download.Specification for Low Pressure Fiberglass Line Pipe.
In each range of size the manutcturer may elect at its option to test a smaller product size to qualify only the smaller sizc.
5.7.2 Short-Time Hydrostatic Qualification Pressure Tests
Short-time hydrostatic qualification pressure tests to determine compliance with 5.6a shall he perftrmed with unrestrained ends at ambient temperature. The pressure shall be applied uniformly and continuously until the desired pressure is reached, in a time of no less than 60 seconds.
5.7.3 Cyclic or Static Pressure Test
a. Using the cyclic test data or static test data and regression analysis as developed for the pipe, following ASTM D 2992, Procedure A or B, construct a regression line converting 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 be not less than 1 1/2 nor more than 2 times the pressure rating of the fitting. The cycle amplitude pressure shall be at least 80% 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 fitting static pressure rating.
d. Test each component specimen as required above with unrestrained ends in accordance with Test Methods of ASTM D 2143 for cyclic tests and ASTM D 1598 for static tests, at a test temperature of I 50°E For components which are to he used at higher temperatures, the higher temperature shall be used.
e. The number of cycles or hours to failure for the component must be no less than that predicted by the HDB 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 1 5LR shall have DSC data on each sample in accordance with Appendix 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 Appendix E.
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 size, wall thickness and grade in continuous production.
6.1.3 PressureTest Frequency
The short-term cyclic pressure test or the short-time hydrostatic failure test per 5.2.1 shall be conducted at a minimum frequency of one test per lot.
6.1.4 Degree of Cure Test Frequency
The test for degree of cure (Tg) per 4.2 and 4.3 shall be conducted at a minimum frequency of one test per lot.
6.1.5 Retests
If any test specimen of the tests specifically mentioned in 5.2.1, 6.1 and 6.2 fails to conform to the specified requirements, the manufacturer may elect to reject the entire lot or make retests on 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 failed to comply in the preceding test.
6.2 FITTINGS—MILL PRESSURE TESTS
All fittings except bushings and flanges shall be hydrotested or pneumatic tested at a pressure no less than 1.5 times its cyclic pressure rating.
7 Dimensions and Lengths
7.1 PIPE
7.1.1 Dimensions
Fiberglass pipe shall be furnished in sizes shown in Tables I and 2 as specified on the purchase order.