CORROSION MONITORING OF SWCC PLANTS - I:1 Vapor-Side ...
CORROSION MONITORING OF SWCC PLANTS - I:1 Vapor-Side ...
CORROSION MONITORING OF SWCC PLANTS - I:1 Vapor-Side ...
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16. Saricimen, H., et. al. (1990) "Performance of Austenitic Stainless Steels in MSF<br />
Desalination Plant Flash Chamber in Arabian Gulf" Desalination Vol. 78, p. 327.<br />
17. Scholden, D. L., (1976) "Analytical Radiography Corrosion" 76, NACE, Paper No. 40.<br />
18. Strommen, R. D. H. Horn and K. R. World, (1993) "A Unique Method for Monitoring<br />
Corrosion of Steel Piping Vessels. Materials Performance, Vol. 32(3), p. 50.<br />
19. <strong>SWCC</strong> Annual Report 1994.<br />
Table 1.<br />
Corrosion resistance<br />
in oxygenated<br />
seawater at low<br />
velocities<br />
Corrosion resistance<br />
in hot deaerated<br />
moderate velocities<br />
Stress<br />
cracking<br />
Summary of Properties of Carbon Steel, 90/10 Cupronickel and type<br />
316 Stainless Steel for Evaporator Components<br />
corrosion<br />
Carbon steel 90/10 Cu Ni Type 316 SS Remarks<br />
Moderate,<br />
about 0.1<br />
mm/yr. plus<br />
pitting<br />
Poor, limited<br />
low velocities<br />
and<br />
temperature<br />
(see test<br />
Good < 0.02<br />
mm/yr.<br />
Good<br />
Suffers pitting<br />
and crevice<br />
corrosion<br />
Good if well<br />
deaerated<br />
and/or velocity<br />
is high<br />
Resistant Resistant Resistant if<br />
oxygen level is<br />
low and pH is<br />
7 or over<br />
Availability All forms Plate and pipe<br />
+ clad plate<br />
All forms<br />
including clad<br />
pate<br />
Approximate cost 1 15 10<br />
ratio in platform<br />
Weldability Good Good Good*<br />
* A low carbon grade is often used to avoid intergranular corrosion in the HAZ, e.g. AISI 316L<br />
This condition<br />
might be<br />
encountered<br />
during shut<br />
down if<br />
drainage is<br />
incomplete<br />
-<br />
Care is needed<br />
with SS if O 2<br />
can leak in or<br />
brine out.<br />
1636
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