API Spec 5LCP:2006(2012) pdf download

API Spec 5LCP:2006(2012) pdf download.Specification for Coiled Line Pipe.
6.2.4 Flaring Tests—All Grades
All grades of coiled line pipe shall be subjected to a flaring test as specified in 8.3.3. The acceptable criterion is no cracking in the weld seam region or base metal up to a minimum II) expansion of ll)ti defined in 8.3.3).
6.2.5 Fracture Toughness Tests
Fracwre toughness testing for Charpy v-notch energy is required where possible. considering the limitations imposed by diameter and thickness of the pipe ordered. Transverse specimens shall be used when possible to machine full site. 2/3 size, or 1/2 site specimens utilizing either tapered-end specimens. non-flattened specimens, or flattened specimens. Otherwise, longitudinal specimens shall be substituted and shall be limited to 1/2 size specimens. The test specimens shall be oriented circumkrentially from a location 90° from the weld with the axis of the notch oriented through the pipe wall thickness, All tests shall be conducted at 32°F0°C). The acceptance shall be 20 ft-lb (27 joules) average. 15 ft-lb (20joules) minimum for full size transverse specimens and 30 ft-lb (41 joules) average, 20 ft-lb (27joules) minimum for full size longitudinal specimens. By agreement. and when specified on the purchase order, alternative tesis may be used when it is not possible to machine specimens meeting the above restrictions.
6.2.6 Metallographic Examination
For all pipe. compliance with the requirement in 5.5 that the entire heat affected zone be heat treated shall be demonstrated by metallographie examination of a weld cross section. Such examinations shall be performed on both ends of each milled length.
7 Dimensions, Mass Per Unit Length, Defects, and End Finishes
7.1 GENERAL—DIMENSIONS AND MASS PER UNIT LENGTH
Coiled line pipe shall be furnished in the outside diameters, wall thicknesses, and mass per unit length specified in Table 3 as specified on the purchase order, except that pipe with outside diameters and wall thicknesses intermediate to those listed in Table 3 arc available by agreement between the purchaser and the manufacturer.
7.2 DIAMETER
The outside diameter shall be within the tolerances specified in Tables 4 and 5 for product in the as-milled condition.
Diameter measurements of pipe sizes 6-½ and smaller shall be made with a snap gauge. caliper, or other device that measures actual diameter across a single plane. Diameter measurements shall be made on both ends of each milled length. and reported as the maximum and minimum dimension across all planes.
7.3 WALL THICKNESS
Both ends of each milled length of pipe shall be measured for conformance to the specified wall thickness requirements. The wall thickness at any location shall he within the tolerances specified in Table 6. except that the weld area shall not be limited by the plus tolerance. Wall thickness measurements shall be made with a mechanical caliper or with a properly calibrated non-destructive inspection device of appropriate accuracy. In case of dispute. the measurement determined by use of the mechanical caliper shall govern.
7.7.10 Other Detects
Any imperfections having a depth grcatcr than l()% of the specified wall thickness shall be considered a defect. See 8.6.5.6 for defects discovered during radiography.
7.8 PIPE ENDS
Pipe shall be furnished wiih lurch cul unfinished or plain ends, unless otherwise specified on the purchase order.
7.9 DRIFT TESTiNG
Each spool of coiled pipe shall be tested through its entire length with a gauge ball of a diameter as agreed upon between the pur chaser and the manufacturer. ‘I’he gauge ball shall pass freely through the pipe.
8 Inspection and Testing
8.1 TEST EQUIPMENT
If test equipment—whose calibration and verification is required under the provisions of this Specification—is subjected to unusual or severe conditions sufficient to make its accuracy questionable. recalibration or reverification shall be perfomied before further use of the equipment.
8.2 TESTING OF CHEMICAL COMPOSITION
8.2.1 ChemIcal Analysis Sampling Frequency
The pipe manufacturer shall report the heat analysis and one product analysis representing each heat of steel used in the production of pipe under this specification.
8.2.1.1 Sampling Methods
At the option of the manufacturer, samples used for product analyses shall be taken from either finished pipe. skelp. tensile test specimens or flattening test specimens. The location of the samples shall be a minimum of 90’ from the electric weld.
8.3 TESTiNG OF MECHANICAL PROPERTiES
8.3.1 TensIle Tests
At the option of the manufacturer longitudinal tests may utilize a full section specimen (Sec Figure 1). or a strip specimen (sec Figures 2 and 3) taken from finished pipe. The strip specimen shall be tested without flattening.
8.3.1.1 Tensile Testing Specimens
The type. and size of the specimens shall be reported. Strip specimens shall be approximately 11/2 in. (38.1 mmn) wide in gauge length if suitable curved tace testing grips are used or if the ends of the specimens are machined to reduce the curvatures in the grip area.