thread1452-421887 hello colleagues. I work for Axion energy (former Exxon) here in Argentina. We currently building a 40.000 m3 crude tank. I have the contractor site manager and owners debating me about the NDE required on the Shell connections at the first course. These are 3 8" connections...
Hi colleagues, once again, I will require your advices on this fórum. On a new 15 000 m3 virgin napphta tank, the last plate (12mts x 2.5mts x 9.5mm) to be installed in one of the Shell courses,length was short by 15 mm. The contractor installed an adjustment plate of 900 mm long x 2.5 mts high...
Thanks for the replies colleagues, but let's say, I have a 3 to 4 mm gap all the way around, and I place the repad on the backside, what is it going to guarantee the penetration of the root to thru the shell thickness and fusion to the reinforce pad. PT on that case won't work. Don't you think...
Hello colleagues, I have a question about the Shell cut out for an API 650 tank. The contractor wants to use the reinforcement pad as a backing for one of the connections on the Shell. Shell is 33 mm thick, nozzle is 8" diameter. Engineering drawings call for a 10 mm gap between neck and Shell...
Hi there, I have a question about roundness measurements required in a 40.000 m3 storage tank. I have been assigned to follow QC on this job when the 6 courses and top reinforcement angle were already installed. Performing a walkdown on the jobsite, I have noticed lots of local deviations on all...
Colleagues greet you again and excuse my insistence. What happen is that I started working in another refinery, and the truth is that I do not like the way they are handling things here. My new doubt, arises because the purchasing department, bought a lot of gate valves from two different...
Hi colleagues. I was wondering what HF letters on the identification plate of a gate valve means. Is it stellite gr6, Co CrA? The Stem is 13 % cr, but seat and wedge only have this HF identification letters. Any advice will be...
Hello again colleagues. It is acceptable to sweep the thread of a NPT valve to be able to use it as a SW. I have rejected it, some suggestion about it, regardless the line service that I do not remember, but I am sure they are for drainage,
Attached photos,
Best regards...
Hello colleagues. I recently started working at an oil company. When I received KSB valves, which came directly from the factory in China, I found that the rings of the valves of 4 "and smaller in diameter, regardless of the #, have the welding of the seat rings to the body, undercut greater...