Guide to Repairing & Altering an ASME Code Tank (Pt 1)

Your ASME tank will need to be altered or repaired at some point.

It’s important that you follow the rules and procedures to keep the tank legal.

For example, did you know that any work performed on the tank’s pressure-retaining part must be performed by a company that has been certified by the National Board to make the repair or alteration?

Here’s what you need to consider before you make any repairs or alterations to your existing ASME Code tank.

1.Find the right company to make repairs

Keep in mind that a company may be certified to repair ASME Code tanks, but may NOT be certified to make the specific repair and/or alteration you need.


When a company is certified by the National Board to repair and/or alter ASME Code tanks, they must include in the scope of the company’s quality control program what repairs and/or alterations they are going to be certified to make.

Some examples of this would be:

  • Repairs and/or alterations to steel tanks, but not fiberglass ones.
  • Repairs but not alterations to ASME Code tanks.
  • Repairs and/or alterations to ASME Code tanks, but only at their location and not off-site (i.e. your facility).
  • Repair of ASME Code tanks that contain only non-lethal substances.

2. Keep safety in mind

Why do procedures and standards need to be so rigorously adhered to?

Because the consequences of ignoring them could be disastrous.

ASME Tanks operate under enormous amounts of pressure. If any component fails, there could be an explosion.

The safety standards were introduced as a result of a number of injuries and fatalities in the early days of autoclave manufacturing.

3. Stick to the rules

It may seem like a hassle to find the right organization to repair and/or alter your ASME Code tank, but the safety of your employees is worth the effort to have the done job correctly.

In part 2 of this blog, you’ll get more examples of repairs or alterations that require a certified company to perform the work.

Have you had to have your ASME Code tank repaired and/or altered? What was the experience like?

Editor’s note: This post was originally published on 7/11/16 and has been updated for accuracy and comprehension.

Author: Jeffrey Lippincott

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