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Questions and Answers
A-516-70 Plate that is normalized is a group _____ material
The maximum Excessive reinforcement allowed on the vertical joint for a new 3/4" plate?
What is the minimum tensile strength of an A-841 Class 2 plate
Maximum misalignment allowed on a 1" thick vertical shell weld is ______ inch.
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A new concrete ring wall is installed. around the entire circumference, the ring wall should be level within _______ inch
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The maximum weld undercut allowed on a nozzle fillet weld is ______ inch
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The letters on a nameplate should be at least ______ high
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When installing a new course, at what plate thickness should the entire vertical weld be radiographed?
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The minimum thickness allowed for the skin of an internal aluminum floating rood is _________ inch
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A new 40 foot diameter API 650 tank is being built. Shell plate used for this tank should never be less than:
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Overlap for a single welded lap joint never needs to exceed ________ inch(es)
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On a specific tank, the bottom course is 0.800" and the 2nd course is 0.600". the vertical welds in these courses must be offset by:
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A stiffening ring at the tanks top made from plate has a minimum new thickness of _______ inch
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Annex M of API 650 provides additional requirements for tanks that operate above _________ degrees F, But not exceeding _______ degrees F
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The minimum size of a manhole on an external floating roof is ______________ inches
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The tank nameplate should be attached near a shell ______
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Surface porosity must not exceed; 1 cluster every ______ inches, and the diameter of the cluster does not exceed ______ inch(es).
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The maximum nominal thickness allowed by API 650 for ASTM A-283 Grade C plates is ________ inch(es)
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Shell plate that is 3/8" must be shaped to the curvature of the tank when the tank diameter is ______ feet
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The slope of a cone roof tank must be at least _______
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Bottom plates are 1/4". The minimum fillet weld size for these welds is _______ inch
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Repads are not need for tank nozzles < ______ NPS
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The bottom course is 1" thick and the sketch plate is 1/4" thick. The minimum size of the fillet for the bottom to shell weld is ________ inch
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Thickened insert plates should have a taper of:
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A tanks bottom course is 0.750" thick. During the hydrotest, what is the maximum fill rate for the lower tank courses? ______ inch/hr
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The bottom course is 0.750" thick and the sketch plate is 3/8" thick. The minimum size of fillet for the bottom to shell weld is _____ inch
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What is the maximum size of a rectangular roof opening?
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Stiffening rings that can trap water should have drain holes that are
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A new stairway is added to a tank. the stairs must be at least _____ wide.
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