API SPEC 2B:2001 pdf download
API SPEC 2B:2001 pdf download.Specification for the Fabrication of Structural Steel Pipe.
7 Inspection and Repair
7.1 INSPECTION
Fabrication and veritication inspection shall be conducted in accordance with the requirements of AWS Dl .1, Section 6. to assure compliance with the applicable requirements of Sections I through 6.
7.2 WELD INSPECTION
All welds shall be visually inspected on both the inside and outside surfaces. The weld profile shall meet the requirements of AWS [)l. 1. Section 5.24.
7.3 NONDESTRUCTIVE EXAMINATION
l0O°/ of each girth weld and spot testing amounting to 10% of each longitudinal weld incIuding the extreme ends) shall be examined by radiographic or ultrasonic inspection in accordance with the requirements of Section 6 and Part F with Paragraph 6,12.3 and Part F with Paragraph 6.13.3.1 of AWS Dl.l. More extensive radiographic coverage may be obtained, if desired, by specification of Supplementary Requirement SR3. The fabricator shall be responsible for conducting all radiographic examinations.
7.4 REPAIR OF BASE METAL IMPERFECTiONS
Iniperlections detected in the base metal shall be explored to determine the extent of each. IrnpertxIions in the finished tube no deeper than 5% of the specified nominal wall thickness and mechanical marks no deeper than 5% of the nominal wall thickness or 1/16 in. in depth need not be removed. Iniperfi ctions which exceed the above shall he ground to sound metal. The excavation area shall be faired, and the thickness in the ground area shall not be reduced more than 7% of the nominal thickness bin in no case more thati in. depth. If the depth of imperfections in as-rolled plate exceeds the above limits, but not more than 20% of the nominal thickness, welding repairs may be performed. Repair of defects deeper than 20% of the nominal wall thickness or repair of defects with a length and/or width more than 20% of the nominal diameter shall not be permitted. Tubulars made from other than as-rolled plate shall not be repaired by welding unless specifically approved by the purchaser.
Introduction
When specified on the purchase order, the following supplemenlary requirements shall apply:
SRi Plate Rolling Direction Orientation
SR1.1 The orientation of the pipe axis relative to the final rolling direction of the plate from which the pipe is formed shall be longitudinal or transverse (circumferential) as indicated on the purchase order and illustrated below.
SRi .2 Pipe ftibricated in accordance with this supplementary requirement shall be identified by marking “S-IL” or “S-IT’ adjacent to “API 2B” as required by Section 8, Item e and Item g. See Figure A-I.
SR2 CVN Toughness Tests
Notch toughness tests shall he conducted as a requirement of the welding procedure qualification tests. The welding procedure qualification test coupon shall he welded and tested in accordance with Paragraph 5.10.1 of AWS DII. Charpy V-notch lest specimens shall he removed from the weld and heat afTected ione in accordance with the requirements of Appendix III of AWS DI.I. The lest temperature. notch location (if different from AWS). and the minimum average energy value shall he as indicated on the purchase order. The pipe shall he identified by marking as required in Section 8 Item g.
SR3 100 Percent Radiographic Examination
In addition to l0()% radiography of the girth welds specified by 7.3. each designated longitudinal weld shall he examined by radiography throughout its entire length. Pipe inspected in accordance with this supplementary requirement shall be identified by marking as required in Section 8, Item g.
SR4 Matching Weld CVN Toughness for Designated Plate Material
SR4.i Depending on the Strength Group and Toughness Class of the designated API or ASTM plate specification, as given in Table C2.4 of AWS 1)1.1, the corresponding.
