Recent content by DSB123

Vertical rods are totally inappropriate to resist seismic lateral loads. cross bracing is required.

Normally because tanks are not swiss watches and some allowance for shape tolerances is needed. Also the Curb angle acts as a stiffener as well.

Kel1, Sorry I cannot help you but it you may get more responses if you say what the Suject of your questions is rather than "Hi, can anyone tell me if you" as the subject!!!

Thanks for the responses so far but none are really addressing my question. I appreciate the performance is affected by the backpressure and that a stress analysis is required. However I was trying to solicit the forum members experiences with allowable loads on relief valves from the discharge...

RVAmeche, A stress analysis would be undertaken to establish the RV loads from thermal/weight and RV discharge reaction as well as Seismic. What I am after is the Forum's thoughts on allowable loading since using the flange leakage approach could be such that some damage to the RV's...

Hi All, I have a general question regarding Relief Valves. Does anybody know what limits there are as regards the allowable loading generated from thermal and weight effects (plus seismic) which is allowed on a relief valve from the connected discharge pipework such that the performance...

What is chocked flow? Do you mean choked flow?

DekDee, If you do not have a weep hole then how would you know if the bend over which the dummy is welded has eroded/corroded and was leaking? Also the weep hole is needed in an "airtight" cylinder to let the welding gasses out during fabrication.

XL83NL, Any decent Pipestress program will allow "Cold Pull/Push" in three directions and also rotations as input.

Why are you not using the 100/30/30 rule for combining horizontal and vertical seismic effects?

Seen plenty of Structural "I" sections being used as anchors at piping bends where you have been able to kick through the web due to excessive corrosion. The benefit of Structural sections is you can see the corrosion whereas for "pipe" dummies you cannot detect the internal corrosion and the...

Go for the easier option - become a Project Manager - more rewarding financially but go and get your brains kicked out first!!!

bo7winner, It sounds like you want to know some answers so you can "bullshit" your way into a job. Not the way to go. There are far too many BS merchants in engineering positions!!!

KVdA, What are you answering No to in Q1? The OP is asking what additional requirements are needed to conform to the PED. "No" as an answer tells him nothing. Also not only does he need to meet the essential safety requirements but the materials need to be either in accordance with a...

You need to appy the force/moment in the applicable direction!