GRP Pipe systems specialists

GRP Pipe systems specialists

DNV has, in close cooperation with renowned stakeholders, set competence profiles for professionals working on GRP pipe systems. The certification of the professional competence requirements are in accordance with the ISO 14692, as determined by the DNV Certification Committee and incorporated in the end terms.   The DNV Certification Committee for GRP accommodates the major global end users, manufacturers, contractors and consultants for GRP pipes in developing and maintaining globally acceptable person’s competence standards and pragmatic but strict certification rules for the currently established competence profiles for field specialist in GRP pipe systems:


A Bonder is a skilled worker, specialized in jointing GRP pipes, who’s competences are certified related to one or more different types of joints (e.g. laminated joints , adhesive joints, threaded joints, “O”- rings, locking keys etc.)

Spool builder 

A spool builder is certified bonder and additionally certified for assembling the GRP spools and fabricate GRP (mitered) Tee’s and mitered Elbows.

Pipe fitter 

A Pipe fitter is certified to lay out, assemble, fabricate, maintain and repair piping systems.


A certified supervisor monitors and takes responsibility for the execution of the work done by the bonders, spool builders and pipe fitters.


The certified inspector independently monitors the installation of the GRP piping systems. He controls and verifies that bonders, spool builders, pipe fitters, supervisors and other personnel have performed in compliance with the job specs. 

Overall certification process 

During the examination phase, a certification candidate will have to demonstrate his/her knowledge, skills and performance in a theoretical and practical exam. The exam pieces will be tested according specific DNV-criteria.

Examination details

DNV enforces and monitors the quality and independency of all by the DNV licensed examination organization GRPcenter and authorized examiners. The examinations shall be supervised by a DNV authorized examiner whilst using control equipment according to the DNV specifications. During the theoretical and practical exams, the DNV examination regulations are applicable.

Examination and test facilities 

DNV has licensed the independent examination organization GRPcenter to organize certification exams and test and has authorized local examiners to supervise these examinations and tests. Although the exams and tests are strictly independent from any training institute, they can be efficiently organized and scheduled in cooperation with GRPcenter.

Certification decision 

All exam and test results will be assessed by DNV per candidate preceding the certification decision by the Manager of Certification of Persons of DNV. When a positive certification decision is taken, a DNV Competence Certificate will be issued to the certificate holder. 

DNV Certificate of Competence 

All certificates of competence for GRP field specialists have a validity period of two year. Each six months, both the certificate holders and the employer/ contractor shall validate the work experience of the certificate holder within his certification range. At the end of the two years validity period, the certificate holder has to take and pass the recertification exam, conditions related to the initial exam.