Paper Machine Dryer Inspection

Paper Machine Dryer Inspection

One of our main areas of expertise is the inspection of paper machine dryer cans.  Over the years, we have inspected thousands of dryer cans.  All of this work has been done throughout the United States.  During the past ten years, we have served on the TAPPI Committee, which formulated the TIS-0402-16 document, “Guidelines for the Inspection of Paper Machine Dryers.”  This document along with insurance company requirements states that all dryers be inspected every 5 years.

TPS uses the latest test equipment to insure accuracy

The following is a list of services we routinely perform on a typical dryer shutdown.  Following this list are some extra or specialized services we also perform at your request.

Services Routinely Performed:

  • Clean the dryer heads of all grease and oil
  • Perform internal visual inspection – dryer heads and shell
  • Magnetic particle inspect front and rear heads – Internal and External
  • Magnetic particle inspect the head to shell joint, and the first 18” of the shell – Internal
  • Ultrasonic test the front and rear head bolts – 100% if accessible
  • Wall thickness readings on the front and rear heads
  • Wall thickness readings on the dryer shell every 1’ across the face of the shell
  • Calculate the minimum shell wall thickness for the current operating pressure for each dryer can

Extras:

  • Remove and replace manhole/handhole covers
  • Fluorescent magnetic particle inspect the dryer shells
  • Hydrostatically test the dryer cans
  • Metallurgical test dryers for material classification
  • Assist in upgrading / rerating dryers
  • Perform pi tape measurements on the dryer shell
  • Perform visual inspection with a video probe with a wide angle and close up lens of the internal, if no entry is possible (Handholes).  This video inspection is recorded on a VCR tape.
  • Obtain manufacturers data reports from the National Board
  • Perform head tilt measurements

If you have any paper machine dryers coming up for inspection, give us a call and let us discuss our dryer inspection program with you.