As others have noted, Caesar won't check the local stresses that you need to consider for a support attachment - this is true for dummy legs, lugs, saddles, whatever. That's just not within the capacity of a Caesar beam element model.
The Paulin suite of tools is really something every stress...
I'm surprised it's only three so far
$1 million lawsuit filed by injured workers in Pemex Deer Park hydrogen sulfide release
“If owners and operators of oil refineries follow the proper policies and procedures designed to protect people, then the release of highly toxic gases does not happen,”...
At low levels, you can definitely smell the rotten egg scent of H2S. However, at levels that rise to immediate danger, you nasal receptors get overloaded and you don't smell it anymore.
Edward L. Klein
Pipe Stress Engineer
Houston, Texas
"All the world is a Spring"
All opinions expressed...
Shelter in place has been lifted. Death toll now at 2 with another 35 injured.
Edward L. Klein
Pipe Stress Engineer
Houston, Texas
"All the world is a Spring"
All opinions expressed here are my own and not my company's.
Still developing, so no details on the cause, but local areas are still ordered to shelter in place.
PEMEX Refinery H2S leak
H2S is pretty nasty and most of us local have had to go through safety awareness training specifically for it. Many facilities require folks to wear H2S monitors where...
The driver of the SUV has finally been identified. And, for the love of all you hold dear, avoid the comments section. People are terrible.
human-remains-found-in-suv-that-struck-deer-park-pipeline-identified
Edward L. Klein
Pipe Stress Engineer
Houston, Texas
"All the world is a Spring"...
The fire has died down significantly and investigators have been able to get into the area to begin their work. Not surprisingly, they found human remains in the car. That cannot have been an easy thing to look upon.
Human Remains Found
Edward L. Klein
Pipe Stress Engineer
Houston, Texas...
Wow, that video of the crash is impressive. The eye witness report from earlier suggest the driver had some kind of medical incident and ended up flooring the accelerator. It was definitely moving fast in that video clip.
Edward L. Klein
Pipe Stress Engineer
Houston, Texas
"All the world is...
The wild thing to me is that even this afternoon, nothing about the driver has been released. I would assume she was killed when her car got blown off after colliding with the valve. She certainly couldn't have survived the heat when the fire kicked off.
Edward L. Klein
Pipe Stress Engineer...
This was quite the hot topic for those of us in the Houston area yesterday:
La Porte Pipeline Explosion
It ended up being a case of an out of control car from the adjacent Wal-Mart parking lot drove into the right-of-way, crashed through the enclosure fence, and broke the line.
It made for an...
I'm curious why you're trying to design these. They should have been designed and provided by the expansion joint manufacturer in their scope.
You really don't want to hydrotest that with the expansion joint in the system - especially at that high of a pressure. Why is the test pressure 4x...
So, first off, there is no NEMA SM-23 anymore. The API codes have all adopted their versions of the NEMA methodology for turbines and compressors. NEMA SM-24 isn't a replacement for SM-23, it addressed different machinery.
That said, I see V14 still has an SM-23 section in the equipment...
Sure, but we also can't tell how close the support at node 190 is to the elbow, given we can't see where the 76985 mm dimension starts from.
Edward L. Klein
Pipe Stress Engineer
Houston, Texas
"All the world is a Spring"
All opinions expressed here are my own and not my company's.
NPS 4" pipe with 6.5" of insulation is already a tough order. All that insulation creates a lot of weight, but contributes no strength. Pyrogel would certainly help as you get a much thinner and lighter weight of insulation in that case.
1300°F with 316L is pretty extreme, as the others...
Ec isn't the "conservative" value for calculating pipe stresses per the piping codes, it's the requirement. For reference, B31.3 2022 section 319.4.4 calls this explicitly for flexibility stresses (EXP in Caesar).
For loads/reactions, you can use Eh at the operating temperature, though I...
And, what's the reason for doing a hydrotest on this line now?
Edward L. Klein
Pipe Stress Engineer
Houston, Texas
"All the world is a Spring"
All opinions expressed here are my own and not my company's.
Admittedly, I've never worked with EN 13480 - but, I would assume it has something in there to address branch reinforcement requirements to determine if your stub-in/on's are going to require repads for pressure design?
If you're writing a pipe spec, the branch connections are going to have to...
That's deeply unfortunate and quite frankly concerning. The process design should be pretty well established before piping design and pipe stress even get started. The P&ID's and line list are the upstream documents that we base our work on.
I'm curious what kinds of industries y'alls clients...
That's pretty shocking. There's no way I'd be putting my seal on any work done under those conditions.
Edward L. Klein
Pipe Stress Engineer
Houston, Texas
"All the world is a Spring"
All opinions expressed here are my own and not my company's.
I must confess, I'm having trouble understanding your usage here. In my parlance, a spec break is a point where there is a change in the piping specification used, typically due to switching to a different pressure class or material type.
70°F is our typical "ambient" temperature for...
