Alpha Technologies Spill Control Barrier System - Manual (Page 8)

Alpha Industrial Power Spill Control Barrier System
Installation Manual Page 7 of 25
4.3 Completely clean and prepare the portion of flooring which will have Adhesive
or Coating applied during installation. For Barrier System versions without
floor coating, this area is a strip approximately 3 inches wide inside the
outline of the Barrier perimeter. For Barrier System versions with floor
coating, this includes the entire area inside the outline of the Barrier
perimeter. Prepare the flooring according to the following guidelines.
All Floor Types: Remove all oil, grease, dirt, efflorescence, laitance,
chemicals, hardeners, curing membranes, wax, previously applied coatings or
other surface containments. Floors may be cleaned with an alkaline detergent
dissolved in hot water, scrubbed with a non-metallic stripping pad and rinsed
several times. Alternatively, clean using steam, water (low pressure), air
blast, vacuum, and broom cleaning methods as described in ASTM D 4258
and SSPC-SP-1.
Concrete Floors: Roughen surface by abrading or etching. Concrete may
be etched with a 20% phosphoric acid solution, mechanically scrubbed, and
rinsed with a neutralizing solution (2 lb. Sodium bicarbonate and 1 gal.
Water) and followed by a clean water rinse. Alternatively, abrade by steel
shot blasting, sandblasting, water jetting with abrasive, power tool cleaning, or
scarifying as described in ASTM D 4258 and NACE RP-01-72.
4.4 Perform a check for cleanliness by rubbing the floor with a clean, white cloth.
If the cloth appears dirty, perform Step 4.3 again. Also check surface
preparation by performing the following ‘water-break’ test: pour a small
amount of clean water onto the surface and observe. If water evenly wets
the surface, the cleaning is adequate. If the water forms beads on the
surface, perform Step 4.3 again. Allow surfaces to completely dry before
applying Adhesive or Coating.
4.5 Use 100 grit aluminum oxide or silicon carbide sandpaper to lightly sand the
underside of the Barrier Strips and the mating surfaces of the connector
plates. Wipe all sanding debris from the Barrier Strips with a clean rag.
4.6 Inspect the floor inside the containment area for any progressive cracks
greater than 1/8 inch in width, as well as for control/expansion joints. Such
surface defects must be repaired or filled with a Joint/Crack Filler before
progressing any further with the Spill Control System installation. Smaller
defects may be filled using Adhesive and a putty knife. A Joint/Crack Filler
Kit is available from Alpha Industrial Power.