API 653 - Section 650 EXAM 1 QUESTIONS AND ANSWERS 2024

API 650 covers material, design, fabrication, erection and testing requirements for aboveground welded steel storage tanks. Internal pressure allowed for these tanks approximates atmospheric pressure. However, the internal pressures mus not exceed what criteria? - ANSWERS The weight f the roof plates (1.1.1) What is the maximum temperature permissible for a 'standard tank' covered by API 650, unless additional requirements of appendix M of API 650 are followed? - ANSWERS 200F (1.1.1) Appendix A provides alternative simplified design requirements for tanks where the stressed components, such as shell plates and reinforcing plates. They are limited to a maximum nominal thickness of what (inches)? - ANSWERS 1/2" (1.1.7) Who is responsible for complying with all of the provisions of API 650 when a new tank is built? - ANSWERS The manufacturer (1.3) Required sections of this Standard become mandatory if the Standard has been adopted by _________ - ANSWERS Legal jusrisdiction (3.11) The lowest tempreature considered in the design shall be assumed to be how many degrees Farenheit above the lowest one-day mean ambient temperature of the locality where the tank is to be installed? - ANSWERS 15F (3.4) Material used to construct a tank shall conform to the specifications of API 650. May other material be used? - ANSWERS Yes, provdied that the material is certified to meet all the requirements of an applicable material spec listed in 650 and it is approved by the buyer. (4.1.2) Shell plates for API 650 tanks are limited to what maximum thickness? - ANSWERS 1.75" (4.2.1.4) A tank is to be fabricated using ASTM A283 Grade C 'killed' material. The maximum thickness of the lower two course plates is 3/4". The tank is to be constructed in Las Vegas, NV. What Minimum Design Temperature could be used without impact testing? - ANSWERS 35F (3.4) and (Fig 4.2) An impact specimen is removed from a 1.25" thick ASTM A516 Grade 55 plate. Three impact tests are taken from the specimen. What average longitudinal impact value must the test meet? - ANSWERS 15ft-lb (Tab 4.5b)