API 650 - Section -6 (Fabrication)

Question 1

When material requires straightening, the work shall be done by ,,,,,,, or another,,,,, method prior to any layout or shaping

Answer 1

pressing, noninjurious

Question 2

Heating or hammering is ,,,,,, unless the material is maintained at forging during straightening

Answer 2

not permissible

Question 3

Attachments that will be welded to the pressure boundary shall not have a ,,,, or ,,,,, coating in the weld area within ,,,,,, of the weld.

Answer 3

zinc, cadmium
12 mm (0.5 in.)

Question 4

Shearing shall be limited to plates ,,,,,, thick used for butt-welded joints and to plates ,,,,,,,thick used for lap-welded joints.

Answer 4

≤ 10 mm (3/8 in.)

≤ 16 mm (5/8 in.)

Question 5

With the Purchaser’s approval, the shearing limitation on plates used for butt-welded joints may be increased to a
thickness ,,,,,,,,,

Answer 5

≤ 16 mm (5/8 in.)

Question 6

The Purchaser’s inspector shall be permitted ,,,,,,to all parts of the Manufacturer’s plant that are concerned with the contract whenever any work under the contract is being performed.

Answer 6

free entry

Question 7

If a lamination is visually detected, the Manufacturer shall ultrasonically examine the area to determine the extent of the laminations and shall ,,,, the plate or make ,,,

Answer 7

reject

repairs

Question 8

For laminations found not exceeding ,,,,,,, in length or ,,,, in depth, repairs may be made by edge gouging and re welding to seal the lamination

Answer 8

75 mm (3 in.)
25 mm (1 in.)