Commissioning and Qualification of Process Instrumentation

Pressure Transmitter

Hello good people of the world! Today’s post is on the commissioning and qualification of instruments used in process measurement and control. Instruments may be used to measure such things as flow, temperature, pressure, level, weight, conductivity, etc. In use, many of these parameters may be quality critical, so proper commissioning and qualification is key!

Things to consider at commissioning or installation qualification verification:

  1. Device is not damaged and is visibly clean
  2. Documentation (e.g. O&M manual) is available
  3. Labeling is applied and durable
  4. Device is installed according to P&ID
  5. Device is accessible for maintenance work
  6. Wiring has been performed according to the loop diagram
  7. Instrument accuracy is as expected
  8. Instrument calibrated range is as expected
  9. Process-contact material of construction (including any gaskets or seals) is as expected
  10. Process-contact surface finish is as expected

For functional and/or operational qualification testing, consider the following tests:

  1. Functional test: simulate 0 mA, 12 mA, and 24 mA signals and verify correct display
  2. Switching operation: verify switching contacts operate as expected by moving them to their position(s)
  3. Fail Safe test: verify the instrument assumes its correct fail-safe configuration, if applicable

What are you sure to check in new process instrument commissioning/qualification?

Like this MWV (Mike Williamson Validation) blog post? Be sure to like, share, and subscribe!

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s