We have a firewater pump system where the piping has been ruptured when the pumps started. A "top up" vessel was then installed to eliminate the possibilities for water hammering to occur. This pressure dampening helped. However, pressure peaks are registered on the gauges which show peaks way...
Can anyone tell me what options I have as a piping stress engineer when it comes to evaluating a pipe designers decision to weld o'lets to fittings such as reducers, tee's and elbows?
I have seen many designs where a weldolet is fitted to an elbow or tee, and I wonder how this is documented...
During my years as offshore engineer we have obtained a set of allowable loads from a supplier that our piping system may induce on a valve. Typically welded valves or valves with mechanical hubs have been of concern.
The vendor has been required to allow for moment and forces in the magnitude...
Our Process deparment has asked a question regarding allowance for increased pressure.
In ASME B31.3 para. 302.2.4 it is described allowance for increased pressure rating (33% or 20%).
Increased pressure is allowed if the duration is within limits described by the Code.
Process is asking...
Reciprocating pumps are used in mud systems while drilling offshore. We are talking 2500lbs systems with 6” or 8” piping. The discharge piping systems are sometimes designed poorly, resulting in reckless shaking and demolished pipe supports. (Rectifying measures have been performed before pipe...
