kSIST FprEN 18213-1:2026
(Main)District heating and district cooling pipes - Bonded single and twin pipe systems for directly buried hot and cold water networks - Part 1: Qualification testing of fitter
- Abstract
This document specifies the methods of examining the knowledge and skill set of the fitter required to carry out on-site sealable joint casing connections on thermally insulated rigid single and twin pipe systems for directly buried hot and cold water networks according to EN 13941-1 [7] and EN 13941-2 [8] also as for flexible pipe systems according to EN 15632-1 [10], EN 15632-2 [11], EN 15632-3 [12], EN 15632-4 [13], EN 17414-1 [17], EN 17414-2 [18], EN 17414-3 [19], EN 17878-1 [23], EN 17878-2 [24], EN 17878-3 [25] and CEN/TS 17889 [26].
The application of these specifications ensures that the examination is carried out according to a standardised examining procedure.
This document covers the following processes:
- preparatory works for joint casing assembly;
- assembling and testing the elements for surveillance systems;
- assembling sealable joint casing system;
- verifying joint tightness (leak tightness testing);
- thermally insulating the joint casing (PUR foaming or half-shells);
- sealing fill & vent openings (weldable or sealable plugs);
- assessing overall installation quality of the completed sealed joint casing assembly (non destructive).
Requirements for test institutes and supervisors are also specified.
NOTE Due to differences of the specific application methods and equipment from joint casing system suppliers, it might be advisable for the fitter to be certified for the particular sealable joint casing system.
- Status
- Not Published
- Public Enquiry End Date
- 24-Dec-2025
- Technical Committee
- I13 - Imaginarni 13
- Current Stage
- 5020 - Formal vote (FV) (Adopted Project)
- Start Date
- 20-Aug-2026
- Due Date
- 08-Oct-2026
- Completion Date
- 20-Aug-2026
kSIST FprEN 18213-1:2026 is a European draft standard published by SIST for examining and qualifying fitters who make on-site sealable joint casing connections in district heating and district cooling pipe systems. It defines the theory test, practical test, acceptance criteria, and the responsibilities of the test institute and supervisor for thermally insulated single and twin pipe systems for directly buried hot and cold water networks.
What does kSIST FprEN 18213-1:2026 specify?
kSIST FprEN 18213-1:2026 specifies how to assess a fitter’s knowledge and practical skill for on-site joint casing connections. The document is about qualification testing, so it focuses on how competence is examined and documented for work on sealed joint casing assemblies.
The scope covers preparatory work, assembly of surveillance-system elements, installation of the sealable joint casing system, leak tightness testing, thermal insulation of the joint cavity, sealing of fill and vent openings, and a final non-destructive check of the completed assembly. The scope also links this work to the pipe-system standards named in the document, including EN 13941-1, EN 13941-2, the EN 15632 and EN 17414 series, the EN 17878 series, and CEN/TS 17889.
The document is organized into 13 clauses and four annexes.
| Annex | What it covers |
|---|---|
| Annex A | Normative guidance for fitter qualification, training subjects, and minimum knowledge and skills |
| Annex B | Normative checklist for sealed joint casing systems and exam evaluation |
| Annex C | Informative template for the fitter qualification test certificate |
| Annex D | Informative template for the qualification identity card |
What are the key requirements of kSIST FprEN 18213-1:2026?
kSIST FprEN 18213-1:2026 requires both a theoretical and a practical examination. The candidate passes only when both parts are successful, so employers and certification bodies can rely on a single qualification route for the fitter’s competence.
Qualification bodies and supervisors
Clause 4 requires a recognized test institute and a qualified supervisor. The test institute must have suitable premises, equipment, and testing capability, and it is expected to have substantial theoretical and practical experience in joint installation, or equivalent staffing if that experience is not available.
Clause 4.1 also states that recognition is handled through Euroheat & Power (EHP), with inspection of the specialist knowledge of supervisors and of the site and equipment used for testing. The recognition is valid for 5 years. In practice, this means the organization running the exam must be set up for controlled, repeatable testing - not just for training.
Clause 4.2 requires the supervisor to have a relevant technical qualification, at least 5 years of practical experience in joint casing installation and quality assessment, and experience from observing fitter examinations. The clause also gives an alternative route based on valid fitter qualification certificates plus observation or internship time.
Admission and training background
Clause 5 limits admission to candidates whose training or experience suggests they can pass the test. The document names apprenticeship as plastics fabricator, at least 1 year as a joint casing installation assistant, or completion of theoretical and practical preparation training.
Clause 5 also requires training in handling isocyanate. That matters because the fitter will work with PUR-foam components and must handle the materials safely on site.
Theoretical test
Clause 6.2 sets a closed-book multiple-choice exam with 20 questions to be answered in no more than 1 hour. The supervisor oversees the test, and the candidate may not use teaching aids.
The questions cover PPE, trench preparation, storage and handling of chemicals and flammable or corrosive substances, tools and equipment, working conditions, preparation of sealing surfaces, surveillance systems, joint casing installation, tightness testing, PUR foam sampling, thermal insulation, sealing of openings, self-checking, and health and safety. In practice, this checks whether the fitter understands the sequence and risks before starting work on site.
Practical test and test-piece setup
Clause 6.3 requires a supervised practical test on a sealable joint casing system approved in accordance with EN 489-1. The candidate prepares and assembles the test piece following the installation instructions, and the practical test lasts 120 minutes.
The standard also controls the setup of the test piece: it must be positioned above ground level in a way that resembles site conditions, with the pipe support height between 200 mm and 400 mm from the floor to the bottom edge of the steel service pipe. This matters because the test is meant to reflect real installation conditions, not a bench-only exercise.
The candidate is responsible for suitable PPE and tools. If the candidate uses tools that are not the test centre’s tools, proof of good condition, function, and calibration is required.
Evaluation and acceptance
Clause 9 uses both visual checks and destructive tests. It covers measuring elements for the surveillance system, visual inspection of the processed sealed joint casing system, adhesive wetting tests on shrink sleeves, welded PE plugs, and sealed plugs.
For welded plugs, the standard combines visual criteria with a mechanical peel-type test. For sealed plugs, the document uses visual inspection and a wetting test to confirm adhesive coverage. In practice, these checks tell the supervisor whether the installation was prepared, heated, aligned, and sealed correctly.
Annex B records the checklist and shows which joint casing system types are examined for each task. Table 3 in Clause 10 also limits the practical qualification scope to the joint casing system types that were actually examined.
Test result, certificate, and validity
Clause 10 states that the qualification is passed only when both the theoretical and practical tests are successful. The theoretical exam requires at least 80% correct answers, while the practical exam requires all relevant evaluation requirements in Clause 9 to be met.
Clauses 10, 12, and 13 control the certificate, identity card, validity period, and renewal. The qualification is valid for 3 years, with conditions on continuous work, no interruption longer than 6 months, and annual employer checks of competence. Renewal is allowed when the test is taken within 3 months before expiry.
What terms does kSIST FprEN 18213-1:2026 define?
- Test Institute - a recognized center that examines fitters and provides the premises, equipment, and process for the qualification test.
- Supervisor - the qualified person who oversees, rates, and validates the fitter examination.
- Sealable joint casing system - the joint casing arrangement that the fitter assembles and seals on site and then verifies for tightness and quality.
- Surveillance system - the measuring system installed and tested as part of the joint casing assembly.
- PUR-foam - the foam insulation used to fill and thermally insulate the joint casing cavity.
- PPE - personal protective equipment, which the candidate must use and the theory test must cover.
- Qualification certificate - the document issued by the test institute to confirm the fitter’s passed examination and qualified joint casing systems.
Who uses kSIST FprEN 18213-1:2026?
kSIST FprEN 18213-1:2026 is used by fitters, test institutes, supervisors, certification bodies, employers, and training providers in district heating and district cooling work. It is especially relevant for companies that manufacture, distribute, or install factory-made pipe assemblies and for organizations that train or assess specialist staff.
In practice, they use it to set up fitter training, run qualification exams, check installation quality, issue certificates and identity cards, and verify whether a fitter is qualified for specific sealable joint casing system types.
Which standards are used with kSIST FprEN 18213-1:2026?
kSIST FprEN 18213-1:2026 relies on EN 489-1 for joint casing assemblies and thermal insulation, EN 14419 for surveillance systems, and EN 17248 for terms and definitions. These are the main normative references named in Clause 2.
The scope also places the fitter qualification in the context of EN 13941-1, EN 13941-2, EN 15632-1 to EN 15632-4, EN 17414-1 to EN 17414-3, EN 17878-1 to EN 17878-3, and CEN/TS 17889. These standards identify the pipe-system families for which the fitter qualification is relevant.
What does the kSIST FprEN 18213-1:2026 document contain?
kSIST FprEN 18213-1:2026 contains the written examination structure, the practical test structure, and the acceptance criteria for both parts. It gives the supervisor control points for identity checks, test-piece preparation, visual inspection, and pass/fail recording.
The document also includes a figure showing the test-piece set-up, tables for plug evaluation and qualification scope, and Annex B’s checklist for recording conformity. Annex C and Annex D provide templates for the certificate and identity card, which are used for documentation and on-site proof of qualification.
Annex A expands the qualification background into training topics such as PE casing, surveillance systems, PUR-foam systems, joint casing systems, joint installation, and documentation. This makes the standard useful not only for examination, but also for planning training content and competence records.
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Frequently Asked Questions
kSIST FprEN 18213-1:2026 is a draft published by the Slovenian Institute for Standardization (SIST). Its full title is "District heating and district cooling pipes - Bonded single and twin pipe systems for directly buried hot and cold water networks - Part 1: Qualification testing of fitter". This standard covers: This document specifies the methods of examining the knowledge and skill set of the fitter required to carry out on-site sealable joint casing connections on thermally insulated rigid single and twin pipe systems for directly buried hot and cold water networks according to EN 13941-1 [7] and EN 13941-2 [8] also as for flexible pipe systems according to EN 15632-1 [10], EN 15632-2 [11], EN 15632-3 [12], EN 15632-4 [13], EN 17414-1 [17], EN 17414-2 [18], EN 17414-3 [19], EN 17878-1 [23], EN 17878-2 [24], EN 17878-3 [25] and CEN/TS 17889 [26]. The application of these specifications ensures that the examination is carried out according to a standardised examining procedure. This document covers the following processes: - preparatory works for joint casing assembly; - assembling and testing the elements for surveillance systems; - assembling sealable joint casing system; - verifying joint tightness (leak tightness testing); - thermally insulating the joint casing (PUR foaming or half-shells); - sealing fill & vent openings (weldable or sealable plugs); - assessing overall installation quality of the completed sealed joint casing assembly (non destructive). Requirements for test institutes and supervisors are also specified. NOTE Due to differences of the specific application methods and equipment from joint casing system suppliers, it might be advisable for the fitter to be certified for the particular sealable joint casing system.
This document specifies the methods of examining the knowledge and skill set of the fitter required to carry out on-site sealable joint casing connections on thermally insulated rigid single and twin pipe systems for directly buried hot and cold water networks according to EN 13941-1 [7] and EN 13941-2 [8] also as for flexible pipe systems according to EN 15632-1 [10], EN 15632-2 [11], EN 15632-3 [12], EN 15632-4 [13], EN 17414-1 [17], EN 17414-2 [18], EN 17414-3 [19], EN 17878-1 [23], EN 17878-2 [24], EN 17878-3 [25] and CEN/TS 17889 [26]. The application of these specifications ensures that the examination is carried out according to a standardised examining procedure. This document covers the following processes: - preparatory works for joint casing assembly; - assembling and testing the elements for surveillance systems; - assembling sealable joint casing system; - verifying joint tightness (leak tightness testing); - thermally insulating the joint casing (PUR foaming or half-shells); - sealing fill & vent openings (weldable or sealable plugs); - assessing overall installation quality of the completed sealed joint casing assembly (non destructive). Requirements for test institutes and supervisors are also specified. NOTE Due to differences of the specific application methods and equipment from joint casing system suppliers, it might be advisable for the fitter to be certified for the particular sealable joint casing system.
kSIST FprEN 18213-1:2026 is classified under the following ICS (International Classification for Standards) categories: 23.040.07 - Pipeline and its parts for district heat; 23.040.99 - Other pipeline components. The ICS classification helps identify the subject area and facilitates finding related standards.
kSIST FprEN 18213-1:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN 18213-1:2025
01-december-2025
Cevi za daljinsko ogrevanje in daljinsko hlajenje - Sistemi s spojenimi eno- in
dvocevnimi sistemi za neposredno vkopana omrežja za toplo in hladno vodo - 1.
del: Preskus usposobljenosti monterja
District heating and district cooling pipes - Bonded single and twin pipe systems for
directly buried hot and cold water networks - Part 1: Qualification testing of fitter
Fernwärme- und Fernkälterohre - Ein- und Doppelrohr-Verbundsysteme für direkt
erdverlegte Fernwärme- und Fernkältenetze - Teil 1: Prüfung von Muffenmonteuren
Tuyaux de chauffage et de refroidissement urbains - Systèmes bloqués de monotubes et
bitubes pour les réseaux d'eau chaude et froide enterrés directement - Partie 1 :
Epreuve de qualification d’installateur
Ta slovenski standard je istoveten z: prEN 18213-1
ICS:
23.040.07 Cevovodi za daljinsko Pipeline and its parts for
ogrevanje in njihovi deli district heat
23.040.99 Drugi sestavni deli za Other pipeline components
cevovode
oSIST prEN 18213-1:2025 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
oSIST prEN 18213-1:2025
oSIST prEN 18213-1:2025
DRAFT
EUROPEAN STANDARD
prEN 18213-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2025
ICS 23.040.07; 23.040.99
English Version
District heating and district cooling pipes - Bonded single
and twin pipe systems for directly buried hot and cold
water networks - Part 1: Qualification testing of fitter
Tuyaux de chauffage et de refroidissement urbains - Fernwärme- und Fernkälterohre - Ein- und
Systèmes bloqués de monotubes et bitubes pour les Doppelrohr-Verbundsysteme für direkt erdverlegte
réseaux d'eau chaude et froide enterrés directement - Fernwärme- und Fernkältenetze - Teil 1: Prüfung von
Partie 1 : Epreuve de qualification d'installateur Muffenmonteuren
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 107.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 18213-1:2025 E
worldwide for CEN national Members.
oSIST prEN 18213-1:2025
prEN 18213-1:2025 (E)
Page
Contents
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Qualification of Test Institute, Supervisor . 6
4.1 Test Institute . 6
4.2 Supervisor . 7
5 Admission to qualification . 8
6 Testing knowledge and skills. 8
6.1 General . 8
6.2 Theoretical test . 8
6.2.1 General . 8
6.2.2 Questions . 8
6.3 Practical test . 9
6.3.1 General . 9
6.3.2 Equipment . 10
6.3.3 Test piece preparation and assembling . 10
7 Examination of skills and knowledge . 11
8 Test piece assembly . 11
8.1 Difficulties and corrections whilst fitting the test piece . 11
8.2 Inspection requirements . 11
9 Evaluation and acceptance criteria of test piece and test specimens . 11
9.1 General . 11
9.2 Evaluation of test piece and test specimen . 11
9.2.1 General . 11
9.2.2 Measuring elements . 12
9.2.3 Visual inspection of processed sealed joint casing system . 12
9.2.4 Adhesive wetting test of processed shrink sleeve . 12
9.2.5 Welded PE plugs . 13
9.2.6 Sealed plugs. 14
10 Test result and qualification test certificate . 15
10.1 Overall assessment . 15
10.2 Theoretical Exam . 15
10.3 Practical Exam . 15
10.4 Qualification certificate and identity card . 15
10.4.1 Qualification certificate. 15
10.4.2 Qualification identity card . 16
11 Failed exam . 16
12 Period of validity. 17
13 Qualification test certificate renewal . 17
Annex A (normative) Qualification of Fitters. 18
A.1 A.1 Knowledge and skills . 18
A.2 Background for training and testing . 18
A.3 Subjects for training and testing . 18
A.3.1 General . 18
A.3.2 Polyethylene (PE) casing . 19
A.3.3 Surveillance systems . 19
A.3.4 PUR-foam system . 19
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prEN 18213-1:2025 (E)
A.3.5 Joint casing systems . 20
A.3.6 Joint installation . 20
Annex B (normative) Checklist of sealed joint casing systems . 24
Annex C (informative) Template fitter's qualification test certificate . 27
Annex D (informative) Template fitter's qualification tests identity card . 28
D.1 Front of the identity card (example) . 28
D.2 Back of the identity card (example) . 28
Bibliography . 29
oSIST prEN 18213-1:2025
prEN 18213-1:2025 (E)
European foreword
This document (prEN:18213-1:2025) has been prepared by Technical Committee CEN/TC 107 “District
heating and cooling systems”, the secretariat of which is held by DS.
This document is currently submitted to the CEN Enquiry.
oSIST prEN 18213-1:2025
prEN 18213-1:2025 (E)
Introduction
The installation quality of joint casing application and the installation of measuring elements for
surveillance systems is crucial for the service life and efficiency of district heating and cooling networks,
built with factory-made thermally insulated pipe, fitting and valve assemblies. Damage caused by
improper installation leads to moisture ingress into the thermal insulation and to corrosion of the steel
service pipe.
This document deals with the installation of sealable joint casing systems according to EN 489-1[1].
The fitter’s ability to follow verbal or written instructions and to testify his skills are important factors
in ensuring the integrity of the joint casing connection.
This document serves as the basis for general recognition by test and certification bodies of the fitter's
competency and qualification.
Fitters can also take an examination according to prEN 18213-2[2] to demonstrate their ability to install
weldable joint casing systems.
This document is an integral part of the standards for bonded pipe systems for district heating and
cooling.
Other standards from CEN/TC 107 covering this subject:EN 253[3], EN 448[4], EN 489-1[1], EN 13941-
1[5], EN 13941-2[6], EN 14419[7], EN 15698-1[8], EN 15698-2[9], EN 17248[10], EN 17415-1[11], EN
17415-2[12], EN 17415-3[13]and prEN 18213-2[2] are listed in the bibliography.
oSIST prEN 18213-1:2025
prEN 18213-1:2025 (E)
1 Scope
This document specifies the methods of examining the knowledge and skill set of the fitter required to
carry out on-site joint casing connections on thermally insulated single and twin pipe systems for
directly buried hot and cold water networks according to EN 13941-2[14].
The application of these specified methods specifications ensures that the examination is carried out
according to a standardised examining procedure.
This document covers the following processes:
— preparatory works for joint casing assembly;
— assembling and testing the elements for surveillance systems;
NOTE For special surveillance systems it can be important to have additional training.
— preparing work for joint casing system installation;
— assembling sealable joint casing system;
— verifying joint tightness (leakage testing);
— thermally insulating the joint casing (PUR foaming or half-shells);
— sealing fill & vent openings (weldable or sealable plugs);
— assessing overall installation quality of the completed joint connection (non-destructive).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 489-1, District heating pipes - Bonded single and twin pipe systems for buried hot water networks -
Part 1: Joint casing assemblies and thermal insulation for hot water networks in accordance with EN
13941-1
EN 14419, District heating pipes - Bonded single and twin pipe systems for buried hot water networks -
Surveillance systems
EN 17248, District heating and district cooling pipe systems - Terms and definitions
District heating and district cooling pipes — Bonded single and twin pipe systems for directly buried
hot and cold water networks — Qualification testing of PE-welder
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 17248 and the following apply.
— ISO Online browsing platform: available at http://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
4 Qualification of Test Institute, Supervisor
4.1 Test Institute
The test institute is a recognized centre for the examination of fitters.
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prEN 18213-1:2025 (E)
NOTE The training of fitters can also take place at the test institute.
Test institutes can be companies that:
— manufacture factory made district heating and district cooling pipe, fitting and valve assemblies,
— distribute factory made district heating and district cooling pipe, fitting and valve assemblies,
— carry out joint installation work on factory made bonded and flexible pipe systems for district
heating and district cooling,
who have demonstrated extensive theoretical and practical experience in joint installation over a
minimum period of 5 years.
or:
— institutions whose business activities include the education and examination of specialist staff,
however with additional personnel requirements, in case extensive theoretical and practical
expertise over a minimum period of 5 years cannot be demonstrated.
Factual requirements for test institutes are suitable equipment engineering, testing technology and
premises for knowledge and practical skills tests.
The application for recognition as testing institute shall be submitted in writing to the Euroheat & Power
association (EHP), followed by an examination of the required specialist knowledge of the supervisors
as well as by an inspection of the required spatial and factual infrastructure. A group of experts decides
on the award or refusal of the certificate of recognition or raises deficiencies for rectification.
The rules of procedure for the entire recognition process should be adhered to
— process of the recognition procedure
— duration of validity
— recognition of additional supervisors
— issuance, expiry or withdrawal of recognition
— monitoring
— review
— extension of the period of validity
— change of recognition
— complaints procedure
The recognition is valid for a period of 5 years. In order to maintain its recognition, the test institute
shall ensure the necessary premises, technical equipment, further training and the availability of a
recognized supervisor.
4.2 Supervisor
The qualification of a supervisor shall be:
— an engineer, bachelor, master, technician or state-recognized master craftsman respectively
master chamber of industry and commerce in a relevant technical profession;
— proving extensive theoretical and practical experience over a minimum period of 5 years in joint
casing installation as well as in the assessment of joint casing quality characteristics, in particular
in the joint casing installation processes to be tested;
oSIST prEN 18213-1:2025
prEN 18213-1:2025 (E)
— having served at least 3 observations/internships during fitter examinations.
Instead of the 5 years of practical experience, the necessary skills can be demonstrated through the
following evidence:
— a valid test certificate according to this document, and
— a valid test certificate according to prEN 18213-2[2], and
— at least 10 days observation/internship on joint casing installation construction sites.
5 Admission to qualification
Only applicants whose training and/or previous activities indicate that they are likely to pass the
planned test may be admitted as candidate.
As a rule, this is the case if one of the following applies:
— completed apprenticeship as plastics fabricator;
— at least one year experience as joint casing installation assistant, confirmed by employer’s
declaration;
— completion of both a theoretical and practical training course in preparation for the fitter’s
qualification test.
The applicant shall be trained in handling of isocyanate.
NOTE Further information can be found in the European REACH regulation.
.
The content of the training course is defined in Annex A
6 Testing knowledge and skills
6.1 General
The candidate shall demonstrate in qualification tests his theoretical knowledge according to 6.2 and
practical skills according to 6.3.
6.2 Theoretical test
6.2.1 General
The candidate’s knowledge of the practical rules for skillful and safe working shall be evaluated in a
theoretical test.
This part of the qualification is carried out under the supervision of the supervisor.
The candidate shall answer 20 multiple-choice questions. Filling in the questionnaire shall not exceed
one hour and be continuous without access to teaching aids.
The questions shall cover the subjects in 6.2.2.
6.2.2 Questions
The questions shall be related to the following subjects, as appropriate:
— personal protective equipment (PPE) (observe the national requirements)
— preparation of pipe trench
oSIST prEN 18213-1:2025
prEN 18213-1:2025 (E)
— storage, transport and handling of chemicals and flammable/corrosive substances
— proper installation equipment and tools
— surrounding conditions for joint installation
— working and ambient conditions
— systems and products to be used
— preparatory works for joint casing installation
— assembly and test of surveillance systems
— preparation of sealing surfaces
— installation of sealable joint casing systems
— tightness testing of joint casing prior to thermal insulation
— production of PUR foam sample
— thermal insulation of joint casing cavity
— sealing foam and vent openings
— self-assessment possibilities of sealed joint casing assembly
— awareness of health and safety requirements.
6.3 Practical test
6.3.1 General
The practical test shall be carried out under the supervision of the supervisor on a sealable joint casing
system approved in accordance with EN 489-1.
Assembling the examination test piece is to be carried out following the installation instructions.
Prior to the practical test, the supervisor shall inform the candidates about the procedures of examining
and rating the individual installation steps. During the practical test, the supervisor shall not provide
any advice.
All materials and documents necessary for the practical test shall be available to the candidate.
The fitter himself is responsible for the personal protective and suitable installation equipment.
The fitter himself can decide whether to use his own tools and equipment (or those of his employer) or
those of the test centre. Unless the fitter uses the tools and equipment of the test centre, separate proof
shall be provided about its flawless condition, functionality and calibration.
The practical test shall be conducted within 120 minutes.
Subject areas of the practical test are:
— preparatory works for sealable joint casing assembly;
— assembly of measuring elements and test of surveillance system;
— preparation of sealing surfaces;
— handling of joint casing system;
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prEN 18213-1:2025 (E)
— tightness test of joint casing, if applicable;
— handling of PUR foam
— closing of foam and vent openings, if applicable;
— visual assessment of assembled joint casing system;
— documentation of joint casing system installation.
6.3.2 Equipment
The equipment to be used in the practical test shall be in flawless condition, functional and calibrated.
Equipment can be the one of the candidate or of the test institute.
6.3.3 Test piece preparation and assembling
The test piece shall be positioned above ground level similarly to the situation on site. The height of the
supports to be attached to the free ends of the steel service pipe shall be between 200 and 400 mm from
the floor to the bottom edge of the steel service pipe, see Figure 1.
The test piece shall be properly prepared for assembling of the joint casing system by the candidate.
Key
A Non-rotating pipe fixings
B Factory made pipe assembly according to EN 253[15]
C Sealable joint casing according to EN 489-1[1]
D Distance between floor and bottom edge of the service pipe (200 mm to 400 mm)
E Floor
Figure 1 — Set-up of the test piece for the preparation and assembly of the joint system
oSIST prEN 18213-1:2025
prEN 18213-1:2025 (E)
7 Examination of skills and knowledge
The exam shall be supervised, rated and validated by the supervisor.
8 Test piece assembly
8.1 Difficulties and corrections whilst fitting the test piece
In the event of difficulties during the practical test for which the candidate is not responsible, the test
piece on which assembling has been started may be replaced provided the supervisor’s prior consent.
Errors made or occurring during the assembling may be repaired only after permission has been given
by the supervisor.
8.2 Inspection requirements
Before assembling, the supervisor shall check the identity of the candidate, as well as the suitability of
the materials and equipment. The test piece shall be identified with the number or mark of the
supervisor and of the candidate.
The supervisor shall
— supervise the preparation and the assembling of the test piece.
— terminate the qualification test if the assembling is not in compliance with the manufacturer’s
instructions or the candidate does not have the skills required to obtain a satisfactory result.
— visually check the test piece after completion by the candidate.
9 Evaluation and acceptance criteria of test piece and test specimens
9.1 General
The supervisor inspects the installation documentation and evaluates the test specimen made by the
candidate.
The test has to be evaluated as follows:
— “c”: conform;
— “nc”: non-conform.
Storage or disposal of the test piece or test specimens shall be as instructed by the supervisor.
9.2 Evaluation of test piece and test specimen
9.2.1 General
Assembly of the test piece shall comply with the installation instructions of the joint casing system used
in the practical test.
The supervisor shall visually evaluate the correct application by accompanying the assembly of the test
piece by the candidate.
After completion of the test piece, visual inspection and destructive tests shall be performed under
supervision.
The evaluation shall be recorded in accordance with Annex B.
Mechanical-technological tests in general shall be carried out after cooling down to 20 +/-10°C.
oSIST prEN 18213-1:2025
prEN 18213-1:2025 (E)
9.2.2 Measuring elements
The following requirements shall be met when installing the surveillance system according to
EN 14419:
— Applying the spacers
— Connecting the measuring elements
— Checking for electrical continuity
— Testing for electrical circuit
— Measuring the electrical insulation resistance
— Evaluating the measured values of electrical circuit and electrical insulation resistance
9.2.3 Visual inspection of processed sealed joint casing system
— Joint casing
— is centred over the joint, evenly installed without overheating and firmly resting against the
casing (no upstanding edges)
— shows uniform appearance around the entire circumference
— Shrink sleeve
— is duly positioned onto,
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