For the high pressure steam or high pressure fuel gas applications, I have been using a double block & bleed valves arrangements. During one of our HAZOP reviews, the facilitator asked me a question 'What was the definition of high pressure? and where was it mentioned in the code?'. My answer...
Yes, we have used a mill tolerance (or) a negative tolerance of 12.5% while calculating the thickness.
Thanks a lot for your responses. Based on your feedbacks, I have justified to the Client.
JB
Can anyone please clarify the following?
We have selected SA335 P11 pipe material for the superheated steam piping (for the operating temp of 470 deg C). The piping was designed to ASME B31.1. The question is, what should be the minimum corrosion allowance considered while selecting the pipe...
