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STI External Tank Inspection C_ <br /> UPRR French Camp <br /> Tank No.TNKD-0829 <br /> Antea Group Project No. UP03061T c n a ro <br /> up <br /> SHELL COURSE 1 <br /> Nominal thickness of shell: 0.167 Inch <br /> Lowest observed UT thickness reading taken on the 0.165 Inch <br /> shell: <br /> Amount of metal loss(corrosion): 0.002 Inch <br /> Years tank has been in service: 24 yrs <br /> Shell corrosion rate: 0.000083 Inch per year <br /> Remaining shell thickness: 98.8 <br /> SHELL COURSE 2 <br /> Nominal thickness of shell: 0.167 Inch <br /> Lowest observed UT thickness reading taken on the 0.141 Inch <br /> shell: <br /> Amount of metal loss(corrosion): 0.026 Inch <br /> Years tank has been in service: 24 yrs <br /> Shell corrosion rate: 0.0011 Inch per year <br /> Remaining shell thickness: 84.4 <br /> SHELL COURSE 3 <br /> Nominal thickness of shell: 0.167 Inch <br /> Lowest observed UT thickness reading taken on the 0.154 Inch <br /> shell: <br /> Amount of metal loss(corrosion): 0.013 Inch <br /> Years tank has been in service: 24 yrs <br /> Shell corrosion rate: 0.00054 Inch per year <br /> Remaining shell thickness: 92.2 <br /> ROOF <br /> Nominal thickness of head: 0.123 Inch <br /> Lowest observed UT thickness reading taken on the 0.089 Inch <br /> roof: <br /> Amount of metal loss(corrosion): 0.034 Inch <br /> Years tank has been in service: 24 yrs <br /> Roof corrosion rate: 0.0014 Inch per year <br /> Remaining head thickness: 72.4 <br /> XINOGEN= <br /> 8 us_anteagroup.com <br />