Pipe Support Painting System
Pipe Support Painting System
(OP)
In one of our projects, there is not any clear explanation on the standard drawings for pipe supports, regarding painting. There is a FEED document covering shop and field painting specification of all fabricated items, but with regard to pipe supports it is only said that their color shall be similar to nearby structure, but no specified painting system (i.e. type and thickness of dry films in primer, intermediate and top coat).
What is your experience in this regard?
Do the "pipe supports" shall have structural steel painting system number, or they should assign to the attaching piping painting system number?
Why (as it is specified for pipes in the line list) there isn't a column in support list to have painting system specified for each support?
Any help will be highly appreciated.
What is your experience in this regard?
Do the "pipe supports" shall have structural steel painting system number, or they should assign to the attaching piping painting system number?
Why (as it is specified for pipes in the line list) there isn't a column in support list to have painting system specified for each support?
Any help will be highly appreciated.





RE: Pipe Support Painting System
Learn from the mistakes of others. You don't have time to make them all yourself.
RE: Pipe Support Painting System
RE: Pipe Support Painting System
to moltenmetal:
So, where these differentiating coating shall be specified. On the standard support drawings or it is better to assign a predefined painting system number in the support list?
RE: Pipe Support Painting System
RE: Pipe Support Painting System
Learn from the mistakes of others. You don't have time to make them all yourself.
RE: Pipe Support Painting System
In the Norwegian sector of the North Sea, stainless steel is the norm for supports offshore, and in some cases, duplex stainless has been specified. These are mostly horribly costly thin wall square hollow sections, which create their own joint detailing problems.
The reason .... you don't have to paint stainless supports and over a lifetime, it's said to be cost effctive.
RE: Pipe Support Painting System
Be aware that the spring itself needs a special coating, which must accommodate deflection ...this is typically neoprene.
For extreme corrosive conditions, sometimes the entire spring hanger is hot dip galvanized, including the spring
MJCronin
Sr. Process Engineer
RE: Pipe Support Painting System
http://www.scielo.br/scielo.php?script=sci_arttext...
As far as I remember Australian Standard 4041 (Piping) recommend not to use zinc coating on the pipe or on equipment attached to the pipe beyond 250 deg C (not exactly sure about this temperature but it is not too high) due to the embrittlement. Therefore I would recommend you to select aluminium based coating instead of galvanizing for this type applications.
RE: Pipe Support Painting System
http://www.twi-global.com/technical-knowledge/faqs...
RE: Pipe Support Painting System