The latest API 650 required the drain hose for oil tank to be "Stainless Steel Armored" but this requirement is not there previously. My client worry that the stainless steel jacket will damage their tank bottom as they apply very thin coat.
Anybody has any idea why they add in this clause...
My sppliers supplied me a batch of Welded tube (even though I specified Seamless tube), which i plan to use for hydrogen services. By normal practise, seamless tube is preffered. I tried to find is there any specification specified that only seamless tube to be use in hydrogen services?