API 650 - Section - 9 (WELDING PROCEDURE AND WELDER QUALIFICATIONS)

Question 1

Welding procedures for ladder and platform assemblies,
handrails, stairways, and other miscellaneous assemblies, but not their attachments to the tank, shall comply with either ,,,,,

Answer 1

AWS D1.1, AWS D1.6, or Section IX of the ASME Code

Question 2

Material with strength < 485 MPa (70 ksi)—

Answer 2

Group 1;

Question 3

Material with strength ≥ 485 MPa (70 ksi) but < 550 MPa (80 ksi)—

Answer 3

Group 2

Question 4

Material with strength ≥ 550 MPa (80 ksi)—

Answer 4

Group 3

Question 5

Separate welding procedures and performance qualifications shall be conducted for,,,,,,,,,,,,

Answer 5

A841M/A841 material

Question 6

For all materials to be used at a design metal temperature below ,,,,,,,,,,, the qualification of the
welding procedure for vertical joints shall include impact tests of the weld metal

Answer 6

10 °C (50 °F), (for vertical joint & Welding procedure)

Question 7

If vertical joints are to be made by a

machine, automatic, or semiautomatic process, impact tests of the ,,,,,,,,,,, shall also be made

Answer 7

heat-affected zone

Question 8

When the design metal temperature is below,,,,,,,,,,,,,,,,impact tests of the weld metal shall be made for all procedures used for welding the components

Answer 8

–7 °C (20 °F), (for All Welds & Procedures)

Question 9

Impact tests shall show minimum values for …….

for P-No. 1, Group 1, materials………
for P-No. 1, Group 2, materials……..
for P-No. 1, Group 3, materials……….

Answer 9

20 J (15 ft-lbf)
27 J (20 ft-lbf)
34 J (25 ft-lbf)

Question 10

For shell plates thicker than ,,,,,,, these values shall be increased by ,,,,,,,,,,,,,, for each ,,,,,,, over 40 mm (11/2 in.). Interpolation is permitted

Answer 10

40 mm (11/2 in.)
7 J (5 ft-lbf)
13 mm (1/2 in.)

Question 11

Weld-metal impact specimens shall be taken across the weld with one face substantially parallel to and
within ,,,,,,,,,,,,,of the surface of the material.

Answer 11

1.5 mm (1/16 in.)

Question 12

The welder or welding operator’s identification mark shall be hand- or machine-stamped adjacent to and at intervals not exceeding ,,,,,,,along the completed welds.

Answer 12

1 m (3 ft)