Flange Fitter

Working on flange connections requires attention and discipline. This is because opening and closing flange connections is not without risks and hazards. Doing this (de)assembly work incorrectly is always lurking. Therefore, it is very important for workers to learn about these connections before doing the work. At Doornbos Equipment, we conduct two-day training sessions on Working on Flange Connections. With and without protocol.


  • Instructors with years of experience.
  • Professional training setup available for hands-on exercises
  • Experience in training experienced, inexperienced, national and international participants.
  • Extensive time is taken to practice well in addition to theory.

Employees working on flange connections

The trainings are designed for flange fitters; employees who open and close flange connections at (petro-)chemical plant sites. During the Working on Flange Connections training course, they learn to assess risks and learn all about safe preparation, execution and inspection. In doing so, we reduce the risk of dangerous situations and business damage. Has the employee already taken the training but the certificate is no longer valid? Then schedule a one-day refresher training.

Working according to protocol (WFPR)

This training is also known as the flange fitter course. We give this course to employees who work according to the protocol of the NEN-EN-1591. Specially designed for mounting and dismounting flanges with specified tightening torque. This is not without risk and thus must be carried out accurately according to protocol. Participants become familiar with procedures and safety measures.

Working without protocol

It is not always mandatory to work according to protocol. In that case, training Working on flange connections without protocol is sufficient. This is the case when the participant opens and closes low-pressure flange connections while working. Again, the participant becomes familiar with all procedures, safety rules and risks.

SOG Exam

We offer employees at (petro-)chemical plant sites the option of concluding the training with an SOG exam that meets the guidelines of the Stichting Samenwerken Voor Veiligheid (SSVV). This applies to both training, with and without protocol.

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The teaching material

Teaching Theory

  • Safety and procedures

  • Tools and working methods for controlled tightening

  • Difference between low and high pressure flanges

  • Stud bolts and nuts (check with measuring caliber)

  • Explanation regarding the terms "relaxation" and "creep" in studbolts

  • Gaskets applied to HD joints

  • Measuring and noting parameters

  • Flange Protocols

  • Industry-specific information

Teaching Practice

  • Working on flanges (with the torque wrench)

  • Apply the flange protocol in your daily work.

Duration of training and exam

The training lasts 2 days. A refresher course lasts 1 day. The certificate is valid for 5 years.

Requirements and details
No specific prior education is required for the Working on Flange Joints course.

  • A valid VCA certificate is required for this course
  • You are at least 18 years old.
  • You have a command of the Dutch language both verbally and in writing
  • Note! For combi training incl Independent Respiratory Protection, participants must have a valid compressed air medical examination. In addition, any facial hair should be shaved off beforehand so that the respirator fits snugly on the face.

Training dates and prices

  1. Working with Flange Connections with Protocol (WFPR) training.
    Basic: € 395,- |Repeat: € 300,-

Prices quoted are excl. 21% VAT.