4 - Materials

Question 1

As per API 650, ,,,,,, type of steel is not permitted

Answer 1

Rimmed or capped

Question 2

As per API 650, Use of cast iron for any pressure part or any part attached to the tank by welding is ,,,,,

Answer 2

prohibited

Question 3

Because of hydrogen embrittlement and toxicity concerns, ,,,,,, components shall not be used without the expressed consent of the Purchaser

Answer 3

cadmium-plated

Question 4

Any new or unused plate and pipe material cannot be completely identified by records that may be used in the construction of tanks, if the material passes the tests

Answer 4

Each plate shall be subjected to the chemical analysis and physical tests

Question 5

Plates:
The edge thickness ordered shall ,,,,,,, than the computed design thickness or the minimum
permitted thickness

Answer 5

not be less

Question 6

Plates:

Incoming plate material shall not be under run, more than ,,,,, from design thickness

Answer 6

0.3 mm (0.01”)

Question 7

Plates:

All plates shall be manufactured by the,,,,,,or ,,,,,, process

Answer 7

• Open-hearth, Electric-furnace,

- Basic oxygen

Question 8

Plates:

Shell plates are limited to a maximum thickness of ,,,,,

Answer 8

45 mm (1.75 in.)

Question 9

Plate:

When specified by the plate purchaser, the steel shall be ,,,,,. When specified by the plate purchaser,

Answer 9

fully killed

Question 10

Plates:

fully killed steel shall be made to ,,,,,practice.

Answer 10

fine-grain

Question 11

Plates:

fully killed plates shall be heat treated to produce grain refinement by either ,,,, or ,,,,, for hot forming

Answer 11

normalizing

heating uniformly

Question 12

Plates: (Impact Testing)

An impact test shall be performed on ,,,,, specimens taken from a single test coupon or test location

Answer 12

three

Question 13

Plates: (Impact Testing)

If more than one value is less than the specified minimum value, ,,,,,, additional specimens shall be tested

Answer 13

three

Question 14

Plates: (Impact Testing)
The min. Avg Value of impact test three specimen shall not b less then ,,,,,,,for longitudinal specimens and,,,,,,,,,,,transverse speciemns

Answer 14

18 J or ( 15 ft-lbf )

20 J or ( 13 ft-lbf )

Question 15

Structural Material:

Structural steel shall conform to

Answer 15

ASTM A36 / A992

Question 16

Welding Electrodes:
Materials with a minimum tensile strength less than ,,,,,,, the manual arc welding electrodes shall conform to the ,,,, and ,,,classification series AWS A5.1

Answer 16

550 MPa (80 ksi)
E60
E70

Question 17

Welding Electrodes:
Materials with a minimum tensile strength of ,,,,,the manual arc welding electrodes shall conform to,,,,classification series in AWS A5.5

Answer 17

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

E80XX-CX