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Assmann polyethylene tank maintenance schedule and check list.

  1. Never enter a tank without following OSHA-approved guidelines.
  2. Check each fitting monthly for possible seepage or leaks.
  3. If you detect seepage, tighten the bolts or the compression nut slightly. Do not over-tighten.
  4. If tightening the hardware does not solve your problem, you may need to replace the gasket or the complete fitting.
  5. Flush your tank every 12 months. This will help to prevent premature failure due to buildup or oxidation. Do not flush the tank with anything that may cause an exothermic reaction. Check with your chemical supplier for a solution that can safely flush the tank.
  6. If your tank is five years or older, check the inside and outside surface of the tank for crazing, cracking, or unusual discoloration. Focus on fitting areas. If you do not find anything, you should check the tank yearly. For chemicals like sulfuric acid,
    sodium hypochlorite, sodium hydroxide, or other known stress-cracking agents, check the surface area after the second year in service and every six months after that.
  7. Stress cracking is a warning sign that should not be ignored. If you suspect or see any signs that could be stress cracks, call your United States Plastic Corp or Assmann Corporation direct.
  8. Make sure all flexible expansion joints are in good working order.
  9. Do not allow the individual responsible for filling the tank to surge air into the tank after filling is complete. This tank is not a pressure vessel. Do not use more than 7 psi when clearing fill lines.
  10. Keep a log of all inspections.
Title: Assmann polyethylene tank maintenance schedule and check list.
Description: What to do to make sure your Assmann tank stays in good shape.
Published: 1/10/2014
Last Edited: 1/23/2023
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