In the battle to maintain the health and value of pipe systems everywhere,
corroded vessel remediation is all too common.
These guidelines will help you complete this vital mission effectively:
1. Remove all loose
scale with a water jet or power wire brush and then clean with RG-2400® (can
be sprayed as a wash down) or alcohol cleaner to remove any oil film
or loose rust residue.
2. If no scale exists, the first step is to clean the vessel with RG-2400
cleaner or alcohol to remove any oil films.
3. RG-2400 can be sprayed onto tanks and vessels to a thickness of 30
mils. (Contact HQ for thinning specifications to obtain a spray-grade
RG-2400.)
4. RG-2400 should be brush-applied into crevices and around fittings
or appurtenances on the tank. Special care should be used to force the
RG-2400 into girts, ladder welds, nuts and bolts, flanges, or any other
irregular surface.
5. Fasten the insulation to the vessel according to the mechanical specifications,
as RG-2400 is not an adhesive and should not be relied on to hold the
insulation on the tank or vessel.
6. Install a self-healing
vapor barrier such as Polyguard's Fabwrap 20™ or Alumaguard 60™ over
the insulation to complete the waterproofing of the system. Install
the final protective
jacket (PVC or Metal) over the vapor barrier.
Conditions
and considerations:
1. Although damp surfaces do not adversely affect application, all surfaces
should be wiped as dry as possible prior to installation.
2. DO NOT apply to surfaces where running water or rainy conditions
are present.
3. Wet surfaces MUST have a light mesh cloth installed to improve material
adherence.
4. Do not apply to surfaces with visible frost without calling for special
instructions.
5. Surface temperatures
should not exceed 120°F.
Special spray application instructions:
1. RG-2400 can be sprayed with general purpose sprayers using proper
solvent dilution.
2. Successful spray with mineral spirits or 5:1 mineral spirits: alcohol
(ethanol or reagent) at 11 to 12% v:v.
3. Too high cut results in unacceptable sag.
4. Inadequate dilution results in unacceptable stringing of material,
similar to orange peel.
5. Typical sprayers used are the Graco 10:1 President, Model 207-353,
Spray Cap 192-315 and the Graco 5:1 Monarch, Model 205-997, Spray Cap
192-315.
6. Typical sprayer settings (provided best results in lab setting):
a. Air pressure, 50 PSI
b. Pump inlet pressure, 50 PSI
c. Fluid flow pressure, 100-120 PSI
7. Requires a minimum 24-hour cure time for elimination of the solvent.
8. Temperature limitations,
50° to 150°F.
9. Do not expose the thinned spray to open flame or sparks. Call Polyguard
for specific spraying information on a job-by-job basis.
Safety precautions:
1. There are no known hazards associated with the application of RG-2400.
2. RG-2400 is classified as an irritant for chemical hygiene purposes.
3. Hand and eye protection
is recommended – protective
gloves, glasses, goggles for spray application. Use of respirator for
spray application
is dependent upon thinning solvent used.
4. RG-2400 will not burn, however, the thinning solvents can. Use caution
after altering the flammability of RG-2400 by thinning.
5. Consult your safety
procedures (and our MSDS) for further.
