![]() In figure 5-7 there is a formula for pad length: greater value of (d+2c)/2+ (tn-c)-(tw-c) and (d+2c) but 5.16.3.2 saysĪ) A distance equal to the diameter of the opening after corrosion in the case of noncircular openings, a distanceĮqual to the corresponding clear dimension is substituted for the diameter of the opening.ī) A distance equal to the radius of the opening after corrosion plus the thickness of the nozzle wall plus the thickness of the tank wall, all taken in the corroded condition in the case of noncircular openings, a distance equal to the corresponding half chord is substituted for the radius of the opening. ![]() Reinforcement pad is mentioned in Api620 5.16.there is a part which I do not understand.
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