Visit our website:
Call: (936) 321-3333

Thursday, May 9, 2019

Powercrete J Installation Instructions

Powercrete J Application Guidelines

Below is a guideline for applying Powercrete J to a pipeline using kits / hand applied method.  

Powercrete J is a 100% solids epoxy used for corrosion prevention and abrasion protection.  This coating is applied over clean, bare steel and adjacent plant applied or mainline coatings.  The Powercrete J application is fast and easy.  

  1. Powercrete J is supplied in pre measured kits.  Part A is the larger container.  Part B (the curing agent) is the smaller container.  Always use one A and one B.  Never create your own kit sizes.
  2. Tools you may need:  mask, wet film gauge, gloves, trowels, a PE stir stick and abrasive paper.
  3. Insure that surfaces are clean of grease, oil, salts and other contaminants.  If necessary use Acetone or MEK.  Perform cleaning when the pipe is at least 5 degrees F above the dew point.
  4. Blast clean the steel surface to SA 2 1/2 or better using particle blasting (sand or other).  Sweep blast adjacent FBE or CTE coating 2" on either side of the the cutback.  
  5. Before mixing the Powercrete J, be certain you have a 2.5 to 5 mil surface profile with sharp angularity.  Burnishing or polishing the steel surface must be avoided. 
  6. Sometimes, it may be necessary to preheat the steel just prior to application.  Preheating eliminates moisture in the pipe (if you preheat to at least 104F).  Preheat will also accelerate cure time.  You can preheat the steel up to 194F.
  7. Warm parts A & B of the Powercrete J to at least 68F.  Mix by pouring ALL of part B into part A (do not ever pour extra; or the wrong size B into it).  Thoroughly scrape container and lid of B.  Slowly begin mixing to avoid introducing air into the mixture.
  8. When using a drill mixer, use a mixing speed that blends uniformly and does NOT create a vortex in the mixture.  Mix between 2-3 minutes with a drill mixing paddle; or 4-5 minutes with a stir stick (if temps are between 68 and 105F.
  9. Reconfirm that the application temperature is above 50F and at least 5F above the dew point.  The slowly pour the mixed Powercrete J onto the pipe.  
  10. Using trowels, brushes or a roller to apply the Powercrete J to the end user specified required thickness.  Cover at least 2" of the adjacent mainline coating.  
  11. Use a wet film gauge to measure the desired minimum thickness.  Double check around the welds and on top of the pipeline to insure proper thickness has been achieved.  
  12. Cure rate for Powercrete J will vary depending on ambient temperatures and other factors.  

No comments:

Post a Comment