We have an interesting situation at the refinery. Just as an example, we may have a 2" pipe expanded into a 24" or 36" or even, let's say, a 48" pipe. Appropriate ANSI flanges are used. The piping operates at about 1,500 psi and contains purified or recycled hydrogen.
Our mechanical engineers...
Here's a program I wrote almost 10 years ago to help project engineers size pumps. I've used this successfully to size about 50 pumps.
I suggest you make an extra copy in case you scramble something.
The instructions are simple. The yellow cells are entries. There are sheets attached for...
The best source of information won't cost you much. You should look at management of change procedures, I prefer those with checklists. You may also want to talk to anyone who has done ISO-9001 commissioning. These are step-by-step procedures for commissioning, validating and handing-over...
I am looking at a way to control sludge at the bottom of large >100' diameter above ground storage tanks. These tanks have a significant slope, with perhaps 20% of the capacity in the heal. I toyed with the idea of adding agitators but this idea was scoffed at by an older engineer who said we...
I've already done some research but I can't find anything specific. I am looking for standards regarding steam vents. I have a relief valve with a discharge line about 35-ft in the air. I found a vague reference in OSHA regarding insulation and distance from personnel access but nothing specific...
Thanks for the response. Here's some information on ground conditions:
Pad above ground: 3"; Pad thickness: 22"; Fill depth: ~ 2'8" below pad.
Ground level: 591'; Top of conduit duct bank: 587';
Bottom of conduit duct bank: 583'; Bedrock: 585'.
Obviously, the problem is not the loading. At...
Relocating the pad
Unfortunately, relocating the pad won't work. I've presented 6 alternative locations in a crowded refinery. Besides, now that they've fallen in love with this location they want me to make it work for them. It's one of the dangers of the business we're in. You guys should know...
Thank Mike,
So, what would you use as a sleeve. I should add that I think there is a cross over duct underneath so the sleeve might be a regular shape.
You said that the soil will disperse the load: 232,000 lbs.? Is that possible if the soil is only 26" deep above the duct bank?
Here's...
Now, this is out of my area of expertise so bear with me. I want to install a 22" concrete pad over buried instrument/electrical conduit. The top of the conduit is about 48" below ground. This leaves a fill space of about 26" between the bottom of the pad and the top of the conduits. I am not...
We are planning to make 5-7 ppm ultra low sulfur diesel (ULSD). I have been tasked to develop a cleaning plan for converting our 500 ppm diesel tankfarm to handle ULSD.
Does anyone have any experience to relay? Does anyone know how long I can expect the cleaning to take? We're talking about...
