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For QA purposes, what do we need to record when jointing or repairing a GRP piping system?

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Frequently asked questions

  • date
  • joint type
  • identification number of the joint or connection
  • location and details of maintenance work (for repairs)
  • temperature
  • relative humidity
  • cure time and temperature
  • name of fitter and signature
  • name of supervisor and signature
  • name of inspector and signature
  • bolt torque (mechanical joints)
  • electrical continuity and resistance to earth (if appropriate)

For more information please email:


contactus@twi.co.uk