1 - Scope

Question 1

API 650 establish minimum requirements of welded AST for internal pressure of,,,,,,,

Answer 1

approximating atmospheric pressure (internal pressures not exceeding the weight of the roof plates)

Question 2

API 650 applies only to tanks whose entire bottom is ,,,,, and to tanks in ,,,,, service that have a maximum design temperature of ,,,,

Answer 2

uniformly supported
non-refrigerated
93 °C (200 °F) or less