jramosjr
Civil/Environmental
- Mar 5, 2007
- 18
We are rehabilitating a tank as per API 653 and when the door sheet (cut by others) was re-installed, the welding produced a localized deformation (banding) on the top horizontal seam of the door sheet of 3/4". The project inspector claims that the banding should be not more than 1/2" as per API 650 Section 7.5.4. API 653 Section 9, which covers tank repairs and/or alterations does not specify dimensional tolerances for peaking and banding. However, API 653 Section 10.5.5 gives dimensional tolerances for peaking (1/2") and banding (1"), but they apply for tank reconstructions. Is it correct to refer to API 650 for the peaking and banding tolerances? To me, these only apply in the fabrication of new tanks. Or can we claim that since API 653 Section 9 does not inlcude tolerances, this requirement does not apply? Why is that for recontructed tanks, API 653 Section 10.5.5 does inlcude a banding tolerance as high as 1"? I'm afraid that if we are asked to repair this, more heat from gouging and re-welding will make matters worse. Your opinin is greatly appreciated.
Jorge L. Ramos, Jr., MSCE, PE
Alonso & Carus Iron Works, Inc. (Euro-American Steel Co., Inc. (
Jorge L. Ramos, Jr., MSCE, PE
Alonso & Carus Iron Works, Inc. (Euro-American Steel Co., Inc. (