BS EN 10217-1:2002 pdf download

BS EN 10217-1:2002 pdf download.Welded steel tubes for pressure purposes-
Technical delivery conditions – Part 1: Non-alloy steel tubes with specified room temperature properties.
7.3 Tube manufacture and delivery conditions
7.3.1 All NOT activities shall be carried out by qualified and compelent level 1,2 and/or 3 personnel authorised to operate by the employer.
The qualification shall be in accordance with EN 10256 or. at least, an equivalent to It.
It is recommended that the level 3 personnel be certified in accordance with EN 473 or, at least, an equivalent to it.
The operating atithonsatlon issued by the employer shall be In accordance with a written procedure.
NDT operations shall be authonsed by a level 3 NDT individual approved by the employer
NOTE The definition of level 1,2 end 3 cen be found In appropriate Standards. eg. EN 473 and EN 10256.
For pressure equipment in categories Ill and IV (of Directive 97l23-EC) the personnel shall be approved by a recognised third-party organisation. Tubes not conforming to this requirement shall be marked C 2, unless a requirement to mark C1 (see 7.3.3applies
7.3.2 The tubes shall be manufactured by the manufacturing processes and routes as specified in table I
Unless Option I is specified the manufacturing process and route is at the discretion of the manufacturer.
Option 1: The manufacturing process and/or route s specified by the purchaser
The submerged arc weld of SAW tubes shall be made using at least one weld run on the inside and one weld run on the outside of the tube.
The strip used for the manufacture ci the helically submerged arc welded (SAWH) tubes shall have a width of not less than 0.8 times or more than 3.0 times the outside diameter of the tube.
The finished tubes shall not include welds used for joining together lengths of the hot or cold rolled strip or plate prior to forming except that for hetcally welded.
For helically welded submerged arc welded (SAWN) tubes, when the weld joining lengths of strip are part of the delivered tube, they shall have the welding procedure qualified in accordance with annex A and the weld shall be subjected to the same inspection and testing as the helical weld
7.3.3 Welding shall be carried out by suitably qualified personnel ii accordance with suitable operating procedures.
For pressure equipment in categories II, Ill, and IV. (of Directive 97/23 EC) the operating procedures and the personnel shall be approved by a competent third-party, Tubes not conforming to this requirement shall be marked C 1.
7.3.4 The welding procedure for SAW tubes shall be qualified in accordance with Annex A.
7.3.5 The delivery conditions of tubes covered by this Part of EN 10217 are shown In Table 1.
Unless Option 2 is specified at the time of enquiry and order the choice of the delivery condition is at the discretion of the manufacturer,
Option 2: The delivery COndVIIOn is chosen by the purchaser.
8.4.3 Internal soundness
8.4.3.1 Leak-tightness
The tubes shall pass a hydrostatic test (see 11.81) ci electromagnetic test (see 11.8.2) fcw leak-tightness.
Unless Option 6 is specified the choice of the test method is at the discretion of the manufacturer.
Option 6. The test method (o verification of leak-tightness in acccidance wrlh 11.8.1 ci 11.8.2 is specified by the purchaser.
NOTE SAW tubes cannot be tested Wi accowdance with 11.82.
8.4.3.2 Non-Destructive Testing
The full length of the weld seam of all EW and BW tubes shall be subjected to a Non-Destructive test for the detection of tongitudinal wnperfections, in accordance with 11.11.1,
The full length of the weld seam of aN SAW tubes shall be subjected to a Non-Destructive test for the detection of imperfections in accordance with 11.112.
8.5 Straightness
The deviation from straightness, of any tube length L. shall not exceed 0,0015 L. Deviations from straightness over any one metre length shall not exceed 3 mm.
8.6 Preparation of ends
Tubes shall be delivered with square cut ends. The ends shall be free from excessive burrs.
Option 7: The tubes shall be delivered with bevelled ends (see figure 1). The bevel shall have an angle a of 30 with a root (ace C of 1.6mm ± 0.8 mm. except that for E thickness T greater than 20mm. an agreed alternative bevel may be specified.