Answer Happy

6. A stainless steel 304 sheet that is 1/8" thick is used to build a tank that will contain an aggressive solution that may cause pitting corrosion. Based on the information provided in the figure where D=1/16" answer a) What will be the maximum amount of SS in ft? that you could use in the tank to have a 90% confidence that no leaks will occur when a service life of 10 years is reached. b) What would be the probability of finding pits with a depth equal to half the thickness of the SS sheet, if the internal area of the tank is twice that in a). c) What would be the probability of finding pits 1/16" deep if a cubic tank 2x2x2 ft is built (no lid). 0.8 - Depth =D 0.6 PROBABILTY OF A PIT OF A GIVEN DEPTH Depth = 20 Depth = 3D 1 0.4 0.2 D=1/16" t = 10 years 3 5 6 2 SPECIMEN AREA (ft)