create a vortex that could introduce air into the product until a uniform color is achieved making sure to scrape the bottom and sides of the container (approximately 2 minutes). No streaks shall be visible.
APPLICATION SHALL TAKE PLACE IMMEDIATELY AFTER MIXING. Apply the product onto the surface and spread down and around the surface in bands beginning from the leading edge of the material to as far under the pipe as can be reached. Overlap the bands and onto the existing coating a minimum of 1". Applicators shall use a brush to smooth out any obvious sags or rough edges, valleys, or drips. Special attention shall be given to weld buttons and bottom surfaces.
The thickness of Protal shall be checked periodically by wet film gauge to achieve the minimum and maximum wet film thickness specified. After the Protal has cured, the owner’s representative and/or contractor’s inspector should measure the film thickness by magnetic gauge and notify the applicator of their acceptance. Notification to the applicator of any inadequately coated sections must be made immediately.
Over-coating, when necessary, shall take place within 2 hours at 80°F (27°C). If recoat window has lapsed, the surface shall be roughed prior to application of the topcoat using 80 grit sand paper or by sweep blast- ing.
Denso and/or the owner’s representative immediately upon completion of the work shall make final inspection of the completed application. Notification of all defects must be made within a reasonable time frame from completion of the work to allow for all repairs within the allowed time frame for the project.
Pinhole repairs may be repaired by using Protal Repair Cartridge. Areas shall be roughened a minimum 1 in. around holiday using Carborundum cloth or 80 grit sandpaper and wiped clean with a xylene soaked cloth prior to patching.
Areas larger than 0.15 sq. in. (0.3 sq. cm.), but less than 1.0 sq. ft. (100 sq. cm.) shall be repaired using a Protal Repair Cartridge. The surface to be coated shall be clean and dry prior to applying the coating. Surfaces below 40°F (4°C) shall be pre-heated in accordance with Section 5.2. Areas requiring repair shall be prepared with a surface grinder or by grit blasting prior to application of the coating. All edges of the surrounding area should be feathered prior to performing the repair.
Refer to "7200 Accelerated Cure Specifications for Repairs" for additional information.
Follow the guidelines detailed in the Material Safety Data Sheets (MSDS).
Keep containers closed when not in use. In case of spillage, absorb with inert material and dispose of in accordance with applicable regulations.
Always refer to project specifications as they may supercede Denso specifications.
DENSO NORTH AMERICA
A Member of Winn & Coales International
Spark testing shall be performed to ensure proper film thickness and for holiday inspection. The voltage used for testing weld joints and field applications shall be equal to that used for testing the mainline coating in the field or 125 volts/mil. based on the specified min. mil. thickness.
HOUSTON: 9747 Whithorn Drive, Houston, Texas, U.S.A. 77095 Tel: 281-821-3355 Fax: 281-821-0304
TORONTO: 90 Ironside Crescent, Unit 12, Toronto, Ontario, Canada M1X1M3 Tel: 416-291-3435 Fax: 416-291-0898
An acceptable field test to check to see if the coating has a full chemical cure, a solvent such as Xylene, MEK or Toluene can be rubbed on to the coating. If the gloss / sheen is removed the coating is not fully cured.
Inspection/ Testing for Backfill
The finished coating shall be smooth and free of protuberances or holidays. All surfaces shall have the required minimum/maximum DFT. Inspection of brush application is best performed immediately after application.
Backfill time shall be determined by the “thumb nail test”. The thumb nail test is defined by when one can no longer make a permanent indention in the coating with his or her thumb nail. Note: A full and/or chemical cure may not be achieved by backfill time. Therefore, in wet soils or water the coating will need a full chemical cure.(refer to Section 6.3 for acceptable field test for chemical cure)