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Apache Stainless Equipment Corporation


When do you need an R-stamp for repairs to an ASME tank?

The National Board of Boiler and Pressure Vessels requires a Certificate of Authorization and R-Stamp for the repair or alteration of boilers, pressure vessels and other pressure retaining equipment.

Any repairs to the ASME pressure zones on tanks require an R-Stamp. Any repairs not in that designated area will not require an R-Stamp.

Apache's Field Service Technicians are fully certified ASME welders. For over 40 years, Apache continues to maintain rounds of audits and inspections from ASME compliance and safety professionals that speak to the consistency of the welders and the effectiveness of the quality control department.

Our Field Service team are  R-Stamp certified. Apache will also provide all compliance addendum documentation required for ASME repairs of modifications in the field.

A host of modifications are available to ASME and non-ASME tanks and vessels. We offer a feasibility audit to compare field modifications to the cost of a new system.

Call Joe Hertel, Field Services Manager,  at 920-356-7334 to discuss your application.


Sometimes Tank Damage Isn't as Bad as You Think

Sometimes things just happen, like a tool accidentally falling into the tank and causing damage.  The damage might be a bent agitator or it might be damage to a side wall or baffles.  We see these kinds of things all the time and we can fix them most of the time.


Repair and refurbish experience:
  • Repair and replace agitator shafts
  • Add agitation to a non-agitation vessel
  • Refurbish outlet valves, seals, or-rings and gaskets
  • Relocate nozzles and fittings
  • Replace manways
  • Repair jackets (conventional, dimple, half-pipe)
  • Add cooling or heating coils
  • Detect and repair leaks
  • Refinish product contact surfaces
  • Repair sidewalls
  • Change bottom head configurations
  • Modify tanks, platforms, catwalks for repurposing
  • Convert non-pressured vessel to pressurized (if approved by engineering)

Download the Tank Group Field Services flyer


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