Tank Plate Material

Question 1

Plates more than 40 mm (1.5 in.) thick shall be of

Answer 1

killed steel made to
fine-grain practice and
Heat treated
Impact tested

Question 2

Plates less than or equal to 40 mm (1.5 in.) thick may be used ,,,,,

Answer 2

at or above the DMT

Question 3

Plate used to reinforce shell openings and insert plates or thickened insert plates shall be ,,,,,as the shell plate to which they are attached

Answer 3

of the same material

Question 4

Except for nozzle and manway necks, the material shall be of ,,,,,, yield and tensile strength and shall be compatible with the adjacent shell material

Answer 4

equal or greater

Question 5

Materials for roof nozzles and manholes do not require ,,,,,,, test

Answer 5

special toughness.

Question 6

For the welding of materials with a minimum tensile strength less than ,,,,,,, the manual arcwelding electrodes shall conform to the E60 and E70 classification series

Answer 6

550 MPa (80 ksi),

Question 7

For the welding of materials with a minimum tensile strength of ,,,,,, the
manual arc-welding electrodes shall conform to the ,,,,,, classification series E80XX-CX

Answer 7

550 MPa to 585 MPa (80 ksi to 85 ksi),

Question 8

Use of the oxyfuel process is not permitted when ,,,,,,of the material is required

Answer 8

impact testing

Question 9

Low-hydrogen electrodes shall be used for all manual metal-arc welds in ,,,,,,

Answer 9

• annular rings and shell courses
• attachment of the first shell course
• bottom or annular plates,