Thanks for the information and after following-up on the code, it still leaves a gray area - is that for underground piping only or does it apply for above ground install as well?
Thanks again;
New gas service to existing homes as part of a larger project, from the meter bar we bored an over-sized hole [allow movement] through the foundation piped through it. The excess clearance was caulked for fire protection and to prevent any water ingress.
Someone brought it to my attention...
Jainuts - Make some first rate points.
Yes it is a flare stack and there is a ID fan as well, however I am still going under the assumption atm pressure. Honestly how would I determine/calculate the pressure drops on the header at all the various points?
Dcasto - Valid point as well...
Johnmam
Standard pipe is manufactured to comply with ASTM standards, such as A53 & A106. I looked for the same docs online as I have in my books, however ASTM was looking to charge for the Standard Pipe Data Spread Sheet, which will give you NPS, Wall thickness, weight/ft, class, sch, grade...
Not sure of the control system, but you maybe able to do the following:
1) Make a min opening for the c/v with regards to mfg min flow requirements
2) If you can obtain a set of Kv values for the valve and base the DP off this - would require some flow testing/commissioning, rent a UT flow...
Hello All,
A new hot issue got thrown on the plate, having a tough start on how to tackle and would appreciate any help. I’m trying to calculate if the existing installation of a ‘surge header’ at a gas plant would handle a total plant upset condition – meaning if every valve lifted...
I've searched the web and really found nothing I could use for our application.
Currently installed is a 4" drain line, which needs to maintain a column of water to prevent air ingress into the system.
A typical 'P' trap or steam trap could not be use in our service - 1.) Due to location...
Can I calculate an actual flushing flow rate with a trend peak shape from an OS?
Assuming the peak as a triangle and measuring the duration in minutes between distance and top, then multiplying base line and peak to find a volumetric flow rate – g.p.m.
I’m trying to capture the flow during...
Apologize for the lack of detail.
The process line is a horizontal run and has guide installed. The scope was to install 4"x10" graphite pad slide plate, this was to be installed between our pipe saddle shoe & W8.
Dealing with 18” steam process line, temperatures of 1030F in reheat system. We are waiting for fabricated graphite pads to be installed, the expected delivery date will put us very much behind schedule.
Is there an alternative resolution or contingency action I could take to avoid such delay...
Ric 1,
We recently went through an outage repairing the fuel gas valves for our turbines. I was not directly involed in it however we replaced the standard rubber o-rings to a different compound referred to as 'VAT 80'. Again I was not directly involved in the overhaul but will try to dig in...