API 653 Chap 7/8

Question 1

What test to perform if material has no identification? (2)

Answer 1

1. mechanical tests (ASTM A6 )

2. Charpy V-notch (A370)

Question 2

All known material must meet what criteria?

Answer 2

chemical and mechanical properties in regards to thickness , design, and metal temperature in API 650 Figure 4.1a

Question 3

What happen when the direction of rolling is not known?

Answer 3

2 tension specimens shall be taken at right angles to each other from a corner of each plate, and one of those test specimen must meet the requirement

Question 4

Existing rolled structural shape that are reused shall meet what requirement?

Answer 4

ASTM A7 (obsolete)

Question 5

New structural material shall meet what requirement?

Answer 5

ASTM A36 / A992

Question 6

Flanges / fasteners shall meet?

Answer 6

as built standards as a min/ current applicable standards

Question 7

What should new weld joint meet?

Answer 7

welding requirement of the current

Question 8

What should existing weld joint meet?

Answer 8

requirement of the as built standards

Question 9

Where should the allowable stress (and hydro) for reconstructed tank be taken from? and what if the material not listed?

Answer 9

API 650 table 5-2 , 2/3 Y and 2/5 T (lesser), 3/4 Y and 3/7 T for hydro

Question 10

Replacement/new penetration’s shall meet what?

Answer 10

Current standards

Question 11

Existing penetration shall meet what?

Answer 11

As built standards

Question 12

What should reconstructed tanks be checked for?

Answer 12

(1) wind induced buckling with current

(2) seismic stability with current

Question 13

windgirders shall meet?

Answer 13

current standards

Question 14

roofs shall meet?

Answer 14

as built standards