What's wrong with this model?

Models like this one could even be used in an interview process for potential designers. You could sit a prospective candidate down to view it. You could then discuss together
the model, probe him for his feedback and get an idea if he can spot THE OBVIOUS!

Wouldn't it be great, if you let the guy view the model and proudly claim that you feel that this is an example of your companies "best work". And then listen for his feedback. You could check his honesty also!!!!

Did anybody see that almost evey vessel did not have isolation valves or relief valves? I really like how there is a "Port hole" (a really big hole in the middle of the platforms which you fall through as you are hopping over or ducking under piping) through the access platforms.

Comments on comments above. "... a demo of what is possible, not an example of good design..." One could put tires on top of a car model to demonstrate capabilities of modeling software, but I personally would make my examples]

So much wrong, I'd run out of red ink.
Access, blocked egress, workability.
Good comment testing the mettle of prospectives.
I wouldn't call this a bad design, but more as a test to see if one knows what they are looking at.
As long as the OD is bigger than the ID, shouldn't be any problem

A 3D model done by a cadster is great for conceptual presentation but if done without basic design standard practices it will more likely shoot your co. in the foot before obtaining work.I've learned 3D on a design job and found it great to be able to see my design conceptualy before the pipe was even delivered.Bottom line it dosen't matter how nice it looks on a picture or a screen but will it work in the real world.

The layout guy has no awareness of erection and maintenance. The rack is designed as an enclosure not a backbone. Many short straight runs of hot pipe between nozzles. No access to manholes from road, in fact no access to anything.Afraid to look deeper.So much work and wasted!

1. I didnt see a single support!
2. Process point of view no drain connection(Many cases).
3. Flexibility analysis not done
4. A lot of crisis on layout.
5. Opening of Exchanger channel
6.Crisis when making scafolding as no structure near(Many cases)
7. Mobile crain/fork lift space
8. Access/Access/Access each item valve , instrument must be accessible.
More over Pump with motor maintenance space missing.

Obviously not a pipe designers demo here. I agree this might be a good quiz for interviewing prospective pipe designers.

Little or no check valves in the centrifugal pump discharges.
No operational bypasses around exchangers.
No drop out spools for pulling bundles.
Ladder cages with little or no room for workers.
Ladder cages non radial to vertical vessels.
Round holes in ladder penetrations on vertical vessel? That’s a new one.
Slanted stairs on vessel platforms. Come on really?
Stairs look way too narrow.
Tripping hazards on almost every pipe run everywhere.
Bundle ends of exchangers with no means of access or removal, extending over pumps and other obstructions.
One exchanger bundle cannot be removed without completely removing another exchanger in front of it.
No thought put into proper plant layout at all
All the equipment tucked nicely between two pipe racks running the entire length of the unit. What?
Absolutely no thought put into proper piping support at all.
Furnace/heater a few feet from vertical vessel and in the middle of the unit. Whoops!
Furnace with heat stack at platform elevation. Stay off that platform!
Piping run improperly down vertical vessels. The pipe support designer will love you for that one.
Piping run across platforms on vertical vessel instead of down through penetrations.
I haven't seen the first PRV anywhere. Stay off that unit!
No isolation valves or spec blinds at hardly any nozzle
Control valves in front of stairways. Please don't step back while turning a block valve.
Steel layout in pipe rack all wrong.
Steel stringers are normally offset from bent elevations to support piping.


I could keep going but I'm exhausted, I'll stop now but this was fun.. Thanks for the post. Brings back memories from my days on the dradfting board and whipping young designers into shape.