Thermal Sprayed Aluminium

[uaepiping]

Dear friends,
A consultant is suggesting (TSA) thermally sprayed aluminium with hot insulation for a 16" diameter piping system. This system has cyclic service for which temperature changes from ambient to the 300°C. The minimum design temperature is -15°C. The line material is ASTM A333 Gr. 6. Now in my opinion, whenever the line temperature will go below ambient due to any reason, the condensation on the piping will start and corrosion will occur. Consultant's point is that sprayed aluminium will take care of that problem.
This type of combination is new for me. Any friend having experience with this type of TSA pipe with hot insulation and having cyclic service.
Is it working anywhere in this world?
Will it work in the conditions stated above?

 

[BigInch]

Is that sprayed on the pipe with insulation put over that?
It won't condense with that 300C op temp, so only during shut downs. Restart should dry it out rather quickly again.

 

[IRstuff]

Sounds plausible:

http://www.praxairsurfacetechnologi...06E6B8C/$file/P10305_TSA_petrochemical_lr.pdf

TTFN
faq731-376

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Of course I can. I can do anything. I can do absolutely anything. I'm an expert!
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[SJones]

NACE SP0198 coating system CS-5 for typical temperature range of -45 to +595 deg C

API RP 583

ExxonMobil information: NACE Corrosion 2012, Paper 2012-1100, Deployment Of CUI Strategies And TSA Implementation In Projects

Steve Jones
Corrosion Management Consultant

http://www.linkedin.com/pub/8/83b/b04

All answers are personal opinions only and are in no way connected with any employer.

 

[BigInch]

Sounds great. Just wondering how much I can afford to buy.

 

[LittleInch]

you would need to ask the TSA supplier / vendor for an experience list, but I've seen it proposed for hot sub sea lines where they wanted maximum exposure to seawater for cooling purposes.

It is not cheap, but is reported to be very effective in such locations.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[uaepiping]

@biginch:
Q - "Is that sprayed on the pipe with insulation put over that?"
A - Yes!
@IRstuff: The link that you gave above, shows the temperature range is something like -45° to 538°C. Good enough for this system. I will discuss this with operations/inspection.
@Sjones: Same temperature range! So I shall look into SP0198.
@Littleinch: Yes, contacting TSA supplier is a good idea. And shall do it.
Thanks all for your help! As the design temperature is less than ambient (-15°C) so our inspection engineer is insisting that we should go for cellular glass insulation and not this combination of (TSA + Hot Insulation). I shall share if anything is new regarding this matter.