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SLOVENSKI STANDARD
01-januar-2023
Vgradnja sistemov za naknadno prednapenjanje konstrukcij - 1. del: Pristojnosti
osebja
Installation of post-tensioning kits for prestressing of structures - Part 1: Competence of
personnel
Ausführung von Arbeiten von Spannverfahren mit nachträglichem Verbund in
Tragwerken - Teil 1: Personalkompetenz
Mise en oeuvre de kits de post-tension pour la précontrainte des structures - Partie 1 :
Compétences du personnel
Ta slovenski standard je istoveten z: EN 17678-1:2022
ICS:
03.100.30 Vodenje ljudi Management of human
resources
91.080.40 Betonske konstrukcije Concrete structures
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 17678-1
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2022
EUROPÄISCHE NORM
ICS 03.100.30; 91.080.40
English Version
Installation of post-tensioning kits for prestressing of
structures - Part 1: Competence of personnel
Mise en oeuvre de kits de post-tension pour la Ausführung von Arbeiten von Spannverfahren mit
précontrainte des structures - Partie 1 : Compétences nachträglichem Verbund in Tragwerken - Teil 1:
du personnel Personalkompetenz
This European Standard was approved by CEN on 19 September 2022.
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. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists 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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17678-1:2022 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 General principles, duties and responsibilities . 7
5 Competence . 10
5.1 General. 10
5.2 Levels of competence. 10
5.3 Training modules . 10
6 Training provider . 12
7 Documents . 12
8 Records . 12
Bibliography . 13
European foreword
This document (EN 17678-1:2022) has been prepared by Technical Committee CEN/TC 104 “Concrete
and related products”, the secretariat of which is held by SN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by April 2023, and conflicting national standards shall be
withdrawn at the latest by April 2023.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: 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 the United
Kingdom.
Introduction
The market for the post-tensioning (PT) kits exists worldwide but the first area of concern is Europe.
The main motivating factor for creating this document on competence of personnel is:
— safety and quality considerations during the installation of the PT kits;
— safeguarding the integrity of structures during their service life;
— facilitating free movement of PT personnel, both between PT specialist companies and member
states.
The requirements for the competence and assessment of prestressing personnel are based on the
experience of CWA 14646:2003 [2].
The CWA was initiated by the PT providers and the CEN workshop represented all groups of stakeholders
related to the installation of PT kits.
As CWA 14646 has expired and to fill this gap, an initiative by the same group of stakeholders was taken
to replace and update the provisions on competence in CWA 14646 with this document.
This document supplements the general requirements of personnel given in EN 13670.
Part 1 of this document deals with the minimum competence personnel working with PT installations
shall possess, and with the tasks the personnel is qualified to undertake.
Part 2 of this document gives the framework for how to assess the competence of PT personnel and issue
certificates to candidates fulfilling the requirements.
Additional requirements and requirements beyond the minimum formulated in this document may be
specified in a project specification or in a national annex to this document.
1 Scope
This document specifies the minimum training and registration requirements for post-tensioning
personnel involved in the installation of PT kits. These PT kits are typically used in concrete structures
using bonded or unbonded tendons in accordance with the relevant execution specifications, product
standard and / or appropriate technical assessment.
This document specifies the tasks that the various categories of PT personnel can undertake.
For the purposes of this document, PT personnel means: PT Manager, PT Supervisors, PT Operatives and
PT Trainees who are directly employed or indirectly employed on a sub-contract basis.
This document does not cover general safety and health aspects.
This document does not cover contractual issues.
prEN 17678-2:2022 deals with the assessment of competence.
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 445, Grout for prestressing tendons – Test methods
EN 446, Grout for prestressing tendons – Grouting procedures
EN 447, Grout for prestressing tendons - Basic requirements
EN 1992-1-1, Eurocode 2: Design of concrete structures - Part 1-1: General rules and rules for buildings
EN 13670, Execution of concrete structures
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at
— ISO Online browsing platform: available at
3.1
client
body for which the PT installation works are being carried out
3.2
ETA
European Technical Assessment (ETA) for a construction product, a favourable technical assessment of
its fitness for the intended use, based on the contribution made by this product to the fulfilment of the
seven Essential Requirements, as stated in the Construction Products Regulation (CPR) for the
construction works in which the product is installed
Note 1 to entry: ETAs are issued by approved Technical Approval bodies under the guidance of “European
Organisation for Technical Assessment (EOTA)”.
3.3
hold point
defined point in the post-tensioning installation process which require inspection or verification of the
satisfactory completion of all the necessary processes up to that point and prior to the commencement of
the next stage of the process
3.4
inspection and test plan
document which summarises the inspection requirements of each stage of the PT installation process,
including receipt and safe storage
Note 1 to entry: Hold points and the person(s) responsible for release will be clearly specified in the document.
3.5
post-tensioning kit
(PT kit)
arrangement of tendons and anchorages to carry out post-tensioning
Note 1 to entry: Such a kit, as defined in the relevant technical specifications and approvals may include some or
all of the following components:
— Anchorage. A mechanical device, usually consisting of several components designed to retain the force
in the stressed tendon and to transmit it to the concrete;
— Bursting reinforcement. The reinforcement in the anchorage zone to resist transverse tensile forces due
to the introduction of prestressing force;
— Coupler. A device to join tendons;
— Duct (sheathing). An enclosure in which the prestressing steel is placed, and which temporarily or
permanently allows relative movement between the prestressing steel and the surrounding concrete;
— Tendon. One or a number of prestressing steel elements, i.e. wire, strand, bar.
3.6
grout
homogeneous mixture of cement and water, it may contain admixtures and additions
[SOURCE: EN 445:2007]
3.7
method statement
documentation describing the methods and procedures to be used to perform the work
[SOURCE: EN 13670:2009]
3.8
prestressing
controlled generation of permanent forces and deformations in a structural concrete member to
counteract the stresses arising from dead and imposed loads
3.9
PT manager
expert with a technical qualification or license and with special experience in managing large scale PT
sites
3.10
PT supervisor
expert with special experience in PT site activities, nominated by the PT specialist company (3.13)
3.11
PT operative
competent person with experience in PT site activities under the guidance of a PT supervisor (3.10)
3.12
PT trainee
unqualified person undergoing training according to a defined training plan
3.13
PT specialist company
company responsible and specializing in the installation of post-tensioning kits in accordance with the
execution specification and having large experience in the field
3.14
PT kit manufacturer
company who manufactures a post-tensioning kit and is holder of the relevant technical specifications
and approvals
3.15
quality plan
document specifying which procedures and associated resources shall be applied by whom and when to
a specific project, product, process or contract
3.16
tendon
single tensile element or a bundle of tensile elements used for the prestressing of a structure, including
the required protection and anchorages
3.17
execution specification
documents covering all drawings, technical data and requirements necessary for the execution of a
particular project
Note 1 to entry: The execution specification is not one single document, but the total sum of documents required
for the execution of the work as provided by the designer to the constructor. It includes the project specification
prepared to supplement and qualify the requirements of this document (EN 13670), as well as referring to the
national provisions relevant in the place of use.
[SOURCE: EN 13670:2009]
4 General principles, duties and responsibilities
This document describes four categories of PT personnel that are authorized to undertake related tasks
in execution class 2 and 3, in accordance with EN 13670:
PT trainee – level PT0 (An entry level with little or no knowledge of the PT installation process, but with
an a
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