Is "aesthetic" painting going to create a problem?
Is "aesthetic" painting going to create a problem?
(OP)
The management of the refinery I work in want a lot of painting done by operators and fitters to improve the look of the place. This painting will not be done with proper surface preparation (cleaning/blasting) nor special paint systems. They will be brush painting a general purpose paint out of a tin over old paint with surface residues and rust. This is on structural steel, motors, guards, pipes etc.
My opinion is that this could cause accelerated corrosion particularly where active rust will get some level of coating over it and then may stay wetter for longer and may tend to generate aggressive corrosion cells. (We have plenty of rain here)
I would value your input on this. If my fears are correct I could do with some reference material to back me up (I have not been able to find anything, I suspect because doing something like this is a bad idea)
My opinion is that this could cause accelerated corrosion particularly where active rust will get some level of coating over it and then may stay wetter for longer and may tend to generate aggressive corrosion cells. (We have plenty of rain here)
I would value your input on this. If my fears are correct I could do with some reference material to back me up (I have not been able to find anything, I suspect because doing something like this is a bad idea)





RE: Is "aesthetic" painting going to create a problem?
RE: Is "aesthetic" painting going to create a problem?
I perhaps haven't explained myself that well.
It is a conscious decision not to follow our normal procedures on painting and understood that it won't last that long. It is intended to smarten the place up using the workforce that are not that busy due to production cuts.
I am concerned over longer term effects that may require costly rectification.
RE: Is "aesthetic" painting going to create a problem?
KENAT,
Have you reminded yourself of FAQ731-376: Eng-Tips.com Forum Policies recently, or taken a look at posting policies: http://eng-tips.com/market.cfm?
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Is "aesthetic" painting going to create a problem?
RE: Is "aesthetic" painting going to create a problem?
Monti Tools markets hand held (pnumatic & electric) surface prep tools. Web site is www.monti-tools.com, considering this myself for repair jobs.
Painting over oxidized, oily surfaces is a waste of time and money, I agree with your concerns.
Good luck
RE: Is "aesthetic" painting going to create a problem?
RE: Is "aesthetic" painting going to create a problem?
But this is a bit off track, sorry.
KENAT,
Have you reminded yourself of FAQ731-376: Eng-Tips.com Forum Policies recently, or taken a look at posting policies: http://eng-tips.com/market.cfm?
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Is "aesthetic" painting going to create a problem?
Steve Jones
Materials & Corrosion Engineer
http://www.linkedin.com/pub/8/83b/b04
RE: Is "aesthetic" painting going to create a problem?
RE: Is "aesthetic" painting going to create a problem?
Rustbuster, thanks for the link to Monti MBX - looks very good - I want one!
SJones, good point about cororosion rates not being that high, but in our 25 years service we have had some nasty corrosion under failed coatings (e.g. ø67m tank roof has to be replaced due to poor painting). I suppose I should be concerned about stuff that will be painted badly and forgotten about. I think most of the painting intended will be highly visible.
Brimmer, thanks for your scientific input.
We are not expecting visits from purchasers. A refinery in our group has already done this and the feedback has encouraged the management to pursue it.
Overall I agree with all of you that say that some surface prep should be done. I think I will write a short note indicating the potential pitfalls and recommend that a work method involving surface preparation is drawn up and followed
RE: Is "aesthetic" painting going to create a problem?