prEN 10369-1

SLOVENSKI STANDARD
01-september-2019
Prednapeta jekla - Zaščitena in obložena vlakna za prednapenjanje - 1. del:
Splošno
Prestressing steels - Protected and sheathed strands for prestressing - Part 1: General
Spannstähle - Geschützte und gehüllte Litze zum Vorspannen - Teil 1: Allgemeine
Anforderungen
Aciers de précontrainte - Fils protégés et gainés de précontrainte - Partie 1 : Généralités
Ta slovenski standard je istoveten z: prEN 10369-1
ICS:
77.080.20 Jekla Steels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2019
ICS 77.140.15
English Version
Prestressing steels - Protected and sheathed strands for
prestressing - Part 1: General requirements
Armatures de précontrainte - Torons protégés gainés Spannstähle - Geschützte und gehüllte Litzen für
pour précontrainte - Partie 1 : Prescriptions générales Vorspannen - Teil 1: Allgemeine Anforderungen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 459/SC 4.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey 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
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 10369-1:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Symbols . 7
5 Classification and designation . 8
5.1 Classification . 8
5.2 Designation. 8
6 Information to be obtained by the manufacturer . 8
7 Requirements . 9
7.1 General . 9
7.2 Requirements for the protected and sheathed strands . 9
8 Assessment and verification of the constancy of performance (AVCP) . 12
8.1 General . 12
8.2 Type testing . 12
8.3 Factory production control (FPC) . 15
8.4 Evaluation, reporting and action . 20
9 Test methods . 20
10 Delivery conditions . 20
10.1 Conditioning . 20
10.2 Transportation and storage . 21
10.3 Labelling . 21
10.4 Documents accompanying the delivery . 21
Annex A (normative) Requirements for greases and waxes used as protection material for
protected and sheathed strands . 22
A.1 Grease . 22
A.2 Wax . 23
Annex B (normative) Requirements for material used for the manufacture of the sheath of
protected and sheathed strands . 24
B.1 Base material, ready for use mixture (granules), black sheath . 24
B.2 Base material, ready for use mixture (granules), sheath other than black . 24
Annex C (normative) Testing procedures . 25
C.1 Determination of the mass per unit length of the protection product . 25
C.2 Determination of the thickness of the sheath . 26
C.3 Test of initial resistance to friction of the sheath . 26
C.3.1 General . 26
C.3.2 Test method applicable to sliding protected and sheathed strands (type S) . 26
C.3.3 Test method applicable to adherent protected and sheathed strands (type A) . 26
C.4 Test of bond retention under thermal variations . 27
C.5 Water tightness test . 28
C.5.1 Static test . 28
C.5.2 Dynamic test . 28
C.6 Impact resistance of the sheath . 29
Annex ZA (informative) Relationship between this European Standard and the
requirements of Regulation (EU) No. 305/2011 aimed to be covered . 32
ZA.1 Scope and relevant characteristics . 32
ZA.2 System of Assessment and Verification of Constancy of Performance (AVCP) . 33
ZA.3 Assignment of AVCP tasks . 34
Bibliography . 35

European foreword
This document (prEN 10369-1:2019) has been prepared by Technical Committee CEN/TC 459/SC 4
“Concrete reinforcing and prestressing steels”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document has been prepared under a standardization request given to CEN by the European
Commission and the European Free Trade Association, and supports essential requirements of
EU Construction Products Regulation (EU 305/2011).
For relationship with EU EU Construction Products Regulation (EU 305/2011), see informative
Annex ZA, which is an integral part of this document.
prEN 10369 consists of three parts under the general title “Prestressing steels — Protected and
sheathed strands for prestressing”:
— Part 1: General requirements
— Part 2: Sliding strands
— Part 3: Adherent strands
Whenever approved, the publication of this series of standards will wait until EN 10138-1 and
EN 10138-3 and EN 10337 are approved.
1 Scope
This document specifies the requirements for uncoated high strength steel strands or zinc or zinc alloy
1)
coated high strength steel strands, encapsulated with a protection product and a sheath .
The intended use of these products is mainly the prestressing of concrete.
NOTE These products can also be used in other stress applications in the construction field (e.g. stay cables
for bridges) where the protection of the products is not removed in use.
The standard applies only to products as supplied by the producer.
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 728, Plastics piping and ducting systems — Polyolefin pipes and fittings — Determination of oxidation
induction time
EN 10020, Definition and classification of grades of steel
prEN 10138-1, Prestressing steels — Part 1: General requirements
prEN 10138-3, Prestressing steels — Part 3: Strand
EN 10204, Metallic products — Types of inspection documents
prEN 10337, Zinc and zinc alloy coated prestressing steel wires and strands
prEN 10369-2, Prestressing steels — Protected and sheathed strands for prestressing — Part 2: Sliding
strands
prEN 10369-3, Prestressing steels — Protected and sheathed strands for prestressing — Protected and
sheathed high strength steel strands — Part 3: Adherent strands
EN ISO 175, Plastics — Methods of test for the determination of the effects of immersion in liquid
chemicals (ISO 175:2010)
EN ISO 527-1, Plastics — Determination of tensile properties — Part 1: General principles (ISO 527-1)
EN ISO 527-2, Plastics — Determination of tensile properties — Part 2: Test conditions for moulding and
extrusion plastics (ISO 527-2)
EN ISO 4892-2, Plastics — Methods of exposure to laboratory light sources — Part 2: Xenon-arc lamps
(ISO 4892-2)
EN ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests (ISO 9227)

1)
The word "sheath" used in the present document does not cover the sheaths as stated in mandate M/115 and
specified in EN 523.
EN ISO 10304-1, Water quality — Determination of dissolved anions by liquid chromatography of ions —
Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate (ISO 10304-1)
EN ISO 10304-4, Water quality — Determination of dissolved anions by liquid chromatography of ions —
Part 4: Determination of chlorate, chloride and chlorite in water with low contamination (ISO 10304-4)
EN ISO 15630-3, Steel for the reinforcement and prestressing of concrete — Test methods — Part 3:
Prestressing steel (ISO 15630-3)
ISO 1183-1, Plastics — Methods for determining the density of non-cellular plastics — Part 1: Immersion
method, liquid pyknometer method and titration method
ISO 2137, Petroleum products and lubricants — Determination of cone penetration of lubricating greases
and petrolatum
ISO 2176, Petroleum products — Lubricating grease — Determination of dropping point
ISO 2207, Petroleum waxes — Determination of congealing point
ISO 6964, Polyolefin pipes and fittings — Determination of carbon black content by calcination and
pyrolysis — Test method
ISO 18553, Method for the assessment of the degree of pigment or carbon black dispersion in polyolefin
pipes, fittings and compounds
BS 2000-121, Methods of test for petroleum and its products — Determination of oil separation from
lubricating grease — Pressure filtration method
DIN 51451, Testing of petroleum products and related products — Analysis by infrared spectrometry —
General working principles
NF M 07-023, Liquid fuels — Determination of chlorides in crude petroleum and petroleum products
NF T 60-191, Petroleum products and lubricating greases — Oil separation on storage of grease — Static
conditions under pressure
ASTM D95, Standard Test Method for Water in Petroleum Products and Bituminous Materials by
Distillation
ASTM D942, Standard Test Method for Oxidation Stability of Lubricating Greases by the Oxygen Pressure
Vessel Method
3 Terms and definitions
For the purposes of this document, the terms and definitions given in prEN 10138-1 and prEN 10337
and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
uncoated strand
strand consisting of uncoated high strength steel wires in accordance with prEN 10138-1 and
prEN 10138-3
3.2
zinc or zinc alloy coated prestressing strand
strand consisting of zinc or zinc alloy hot-dip coated high strength steel wires in accordance with prEN
3.3
protected and sheathed strand
uncoated or zinc or zinc alloy coated strand encapsulated with a protection product and a sheath
A distinction is made between:
3.3.1
sliding protected and sheathed strand (type S)
protected and sheathed strand for which the protection product allows a movement between the sheath
and strand by application of a specified force
3.3.2
adherent protected and sheathed strand (type A)
protected and sheathed strand for which an adherence between the sheath and strand restricts their
relative movement until a specified minimum force is reached
3.3.3
protected and double sheathed strand
protected and sheathed strand using double sheathing for both types (S and A)
3.4
protection product
product applied before sheathing to ensure full encapsulation
3.5
sheath
continuous envelope surrounding the strand
3.6
batch of protection material
quantity of grease or wax produced in one manufacturing operation
4 Symbols
The symbols used in this European Standard and the corresponding designations are given in Table 1.
Table 1 — Symbols and corresponding designations
Symbol Unit Designation
L mm Length of the test piece
M g Total mass of the test piece
t
M g Mass of the sheath
s
M g Total mass of wires
w
M g/m Mass per unit length of the protection product
pl
E MPa Modulus of elasticity of the strand
α ° Angle of bend of the test piece in the test for resistance to rotating
bending
D mm Diameter of the core wire
a
5 Classification and designation
5.1 Classification
The steels of the constituent strands of protected and sheathed strands covered by this document are
classified as special steels according to EN 10020.
5.2 Designation
The designation of the products covered by this standard comprises in the order:
— the description of the product (i.e. protected and sheathed strand);
— the designation of the strand from which the protected and sheathed strand is produced according
to the relevant standard in square brackets;
— the symbol of the protection product (+ G for grease; + W for wax);
— the symbol of the type of protected and sheathed strand (S or A, respectively see prEN 10369-2 and
prEN 10369-3);
— the colour of the sheath when other than black.
6 Information to be obtained by the manufacturer
The following information shall be obtained by the manufacturer at the time of enquiry and order:
a) designation of the product in accordance with 5.2;
b) the packaging and protection requirements;
c) the requirements concerning information to accompany the delivery (e.g. date of manufacture,
delivery note, type of inspection document, see EN 10204, copies of force/extension diagrams);
d) special requirements for labelling.
7 Requirements
7.1 General
7.1.1 Manufacturing process
The strands to be protected and sheathed shall be manufactured in accordance with prEN 10138-1 and
prEN 10138-3 or prEN 10337.
The manufacturing method of the protected and sheathed strands shall be at the discretion of the
manufacturer provided that the sheath is applied to the protected strand by direct extrusion and all the
requirements of this standard are fulfilled.
7.1.2 Requirements for the constituent materials of the protected and sheathed strands
7.1.2.1 Strand
The uncoated strands shall be in accordance with prEN 10138-1 and prEN 10138-3 and be free from
rust at the time of application of the protection and sheath.
The zinc or zinc alloy coated prestressing strands shall be in accordance with prEN 10337.
7.1.2.2 Protection product
7.1.2.2.1 General
The protection product is a mineral oil-based grease or a microcrystalline wax.
7.1.2.2.2 Grease
The grease shall meet the requirements given in Table A.1.
7.1.2.2.3 Wax
The wax shall meet the requirements given in Table A.2.
7.1.2.3 Base material of the sheath
The base material of the sheath shall meet the requirements given in Annex B.
7.2 Requirements for the protected and sheathed strands
7.2.1 Standard and special properties
The requirements for the standard and special properties as defined in prEN 10138-1 and
prEN 10138-3 or prEN 10337 respectively shall apply.
7.2.2 Overall diameter
The overall diameter of the protected and sheathed strands shall be within a specified range in
accordance with the requirements of:
— prEN 10369-2 for sliding protected and sheathed strands (type S), and
— prEN 10369-3 for adherent protected and sheathed strands (type A).
7.2.3 Straightness
The maximum bow height of the protected and sheathed strands from a reference line of 1 m long,
measured within the curvature, in its plane, according to EN ISO 15630-3, shall be less than or equal to
25 mm.
7.2.4 Mass of the protection product
The minimum specified value for the mass of grease or wax per metre of strand shall be as given in the
relevant requirements of prEN 10369-2 or prEN 10369-3.
The mass per unit length of grease or wax shall be determined according to the procedure described in
C.1.
7.2.5 Properties of the sheath
7.2.5.1 Thickness
The minimum thickness of the sheath shall meet the requirements specified in prEN 10369-2 or
prEN 10369-3 at any section.
The thickness of the sheath shall be determined according to the procedure described in C.2.
7.2.5.2 Surface conditions
There shall be no trace of protection product at the surface of the sheath.
The sheath shall not show continuous scratches, injuries or craters visible with a normal or corrected
vision. Local discontinuities shall not be of a length greater than the maximum overall diameter of the
protected and sheathed strand. The thickness of the sheath at a local discontinuity shall not fall below
the specified minimum.
7.2.5.3 Mechanical properties
The specified values of mechanical properties of the sheath shall be the minimum specified value of
tensile stress at yield, tensile strain at break at 23 °C, determined according to EN ISO 527-1 and
EN ISO 527-2 on a specimen 1B with a testing speed of 100 mm/min ± 10 %, and shall meet the
requirements specified in prEN 10369-2 or prEN 10369-3.
7.2.5.4 Stress cracking resistance
There shall be neither rupture nor cracking of the sheath, visible under a visual inspection by a person
with a normal or corrected vision when tested according to ASTM D1693 in an aqueous solution with
1 % of nonylphenol poly(ethylene-oxy)ethanol.
7.2.5.5 Resistance to aggressive media
The values of the tensile stress at yield and tensile strain at break of the sheath at 23 °C, determined
according to EN ISO 527-1 and EN ISO 527-2 on a specimen 1B with a testing speed of
100 mm/min ± 10 %, shall be greater than or equal to 75 % of those specified in prEN 10369-2 or
prEN 10369-3, after an exposure of 16 weeks to each of the aggressive media as listed in Table 2.
Table 2 — List of typical aggressive media and test agents
Exposure to Test agent
Mineral oil Oil No 3 according to ISO 1817
Acid 10 % sulphuric acid
Base Saturated calcium hydroxide 40 % sodium hydroxide
Solvents Blend of acetone: ethanol: n-heptane: toluol, 1:1:1:1 by mass
Salt water Saturated solution of demineralised tab water and NaCl

The change of the test piece volume after each test shall be lower than or equal to 5 %.
The tests shall be carried out according to EN ISO 175.
7.2.5.6 Resistance to ionising radiation
Where required or applicable, there shall not appear cracks visible under a visual inspection without
assistance by a person with a normal or corrected vision and the yield strength of the sheath shall
remain at a value greater than or equal to 75 % of that specified in prEN 10369-2 or prEN 10369-3,
after a 3 000 h-test.
The test shall be carried out according to EN ISO 4892-2.
7.2.5.7 Properties after exposure to temperature
The values of tensile stress at yield and tensile strain at break of the sheath shall be greater than or
equal to 75 % of those specified in prEN 10369-2 or prEN 10369-3, after exposure of the sheath for 72
h ± 1 h to temperatures of 100 °C ± 5 °C and - 20 °C ± 2 °C.
The tensile test shall be carried out at 23 °C ± 5 °C according to EN ISO 527-1 and 2 on a specimen 1B
with a testing speed of 100 mm/min ± 10 %.
7.2.5.8 Colour stability
Where required and for specific applications, the colour stability as well as the method of verification of
this property may be specified for colours other than black.
7.2.6 Water tightness
Water tightness of the product shall be specified as the maximum mass variation of the test piece and
the mass of water passing through the test piece during the test as specified in prEN 10369-2 or
prEN 10369-3.
The tests to characterize the water tightness shall be carried out according to the procedure described
in C.5.
NOTE These tests are intended to give the proof of a proper filling of the spaces between the wires of the
strand and between the sheath and the wires by the protection product.
7.2.7 Initial resistance to friction
Initial resistance to friction shall be a maximum or minimum specified force as given in prEN 10369-2
or prEN 10369-3.
It shall be determined according to the procedure described in C.3.
7.2.8 Retention of the adherence under thermal variations
The retention of the adherence under thermal variations is only specified for adherent protected and
sheathed strands (type A), see prEN 10369-3.
It shall be determined according to the procedure described in C.4.
7.2.9 Impact resistance
Impact resistance shall be as specified in prEN 10369-2 or prEN 10369-3.
The test shall be carried out according to the procedure described in C.6.
8 Assessment and verification of the constancy of performance (AVCP)
8.1 General
The compliance of the protected and sheathed strands for prestressing with the requirements of this
standard and with the performances declared by the manufacturer in the declaration of performance
(DoP) shall be demonstrated by:
— determination of the product type;
— factory production control by the manufacturer, including product assessment.
The manufacturer shall always retain the overall control and shall have the necessary means to take
responsibility for the conformity of the product with its declared performance(s).
8.2 Type testing
8.2.1 General
All performances related to characteristics included in this standard shall be determined when the
manufacturer intends to declare the respective performances.
Assessment previously performed in accordance with the provisions of this standard, may be taken into
account provided that they were made to the same or a more rigorous test method, under the same
AVCP system on the same product or products of similar design, construction and functionality, such
that the results are applicable to the product in question.
NOTE 1 Same AVCP system means testing by an independent third party, under the responsibility of a notified
product certification body.
For the purposes of assessment, the manufacturer's products may be grouped into families, where it is
considered that the results for one or more characteristics from any one product within the family are
representative for those same characteristics for all products within that same family.
NOTE 2 Products can be grouped in different families for different characteristics.
NOTE 3 Reference to the assessment method standards can be made to allow the selection of a suitable
representative sample.
In addition, the determination of the product type shall be performed for all characteristics included in
the standard for which the manufacturer declares the performance:
— at the beginning of the production of a new or modified protected and sheathed strands for
prestressing (unless a member of the same product range), or
— at the beginning of a new or modified method of production (where this may affect the stated
properties); or
they shall be repeated for the appropriate characteristic(s), whenever a change occurs in the protected
and sheathed strands for prestressing design, in the raw material or in the supplier of the components,
or in the method of production (subject to the definition of a family), which would affect significantly
one or more of the characteristics.
Where components are used whose characteristics have already been determined, by the component
manufacturer, on the basis of assessment methods of other product standards, these characteristics
need not be re-assessed. The specifications of these components shall be documented.
Products bearing regulatory marking in accordance with appropriate harmonized European
specifications may be presumed to have the performances declared in the DoP, although this does not
replace the responsibility on the protected and sheathed strands for prestressing manufacturer to
ensure that the protected and sheathed strands for prestressing as a whole is correctly manufactured
and its component products have the declared performance values.
8.2.2 Test samples, testing and compliance criteria
The type and number of initial tests on protected and sheathed strands for prestressing (defined by the
type i.e. S or A, the protection material i.e. grease or wax, the sheath thickness class i.e. T 1, T 2 or
n n
T 3), shall be as given in Table 2.
n
The samples to be taken per size shall permit the determination of geometrical properties, standard
mechanical properties and special properties, with retests on any invalid results due to inappropriate
testing procedure where necessary.
The samples shall be taken as random samples from the production material presented for testing. Care
should be taken to ensure that the samples genuinely reflect the properties of the products to be tested.
Any sample preparation shall be in accordance with EN ISO 377.
Tests previously performed in accordance with the provisions of this standard (the same or more
technically demanding and appropriate test method, sampling procedure and system of attestation of
conformity) may be taken into account.
Initial type tests shall be repeated for the appropriate characteristic(s), whenever a change occurs in
the design of protected and sheathed strand, in the raw material or in the supplier of the components,
or in the production process (subject to the definition of a family), which would affect significantly one
or more of the characteristics.
Products marked in accordance with appropriate harmonized European specifications may be
presumed to have the performances stated with that marking, although this does not replace the
responsibility on the protected and sheathed strand designer to ensure that the protected and sheathed
strand as a whole is correctly designed and its component products have the necessary performance
values to meet the design.
Table 3 — Type and number of tests for the type testing
Base strand Case 1 – Integrated manufacturers
Certificate of constancy of performance of the product
according to prEN 10138-1 and prEN 10138-3 or
prEN 10337
Visual control “free of rust”
Case 2 – Manufacturers buying their base strand
Control of CE marking according to prEN 10138-1 and
prEN 10138-3 or prEN 10337
Visual control “free of rust”
Verification of the mechanical properties of For each supplier of base strand:
the protected and sheathed strands
a
- 5 tensile tests
a
- 1 relaxation test
a
- 1 fatigue test
Protection material Declaration of conformity with the support of test reports
for all properties listed in either Table A.1 or Table A.2 by
the supplier
Material for sheathing Declaration of conformity with the support of test reports
for all properties listed in Tables B.1 and B.2 by the supplier
Protection and sheath regular tests 5 tests per each diameter of protected and sheathed strand
(defined by the type i.e. S or A, the protection material i.e.
Overall diameter
grease or wax, the sheath thickness class i.e. T 1, T 2 or
n n
Straightness
T 3)
n
Mass of the protection product
Thickness of the sheath
Surface conditions and homogeneity
Protection and sheath other tests 1 test per diameter of protected and sheathed strands
(defined by the type i.e. S or A, the protection material i.e.
Water tightness
grease or wax, the sheath thickness class i.e. T 1, T 2 or
n n
Initial resistance to friction
T 3)
n
Impact resistance
Protection and sheath special tests 1 test per supplier’s combination (protection material +
sheath) independently of the type of protected and sheathed
Stress cracking resistance of the sheath
strand and sheath thickness class
Resistance to aggressive media
Sheath’s mechanical properties
Retention of the adherence (only type A)
Resistance to ionising radiation
Colour stability (other than black), where
required
Properties after exposure to temperature
a
These tests may be carried out on samples specially produced in the same manufacturing conditions without the
incorporation of the protection product.
8.2.3 Test reports
The results of the determination of the product type shall be documented in test reports. All test reports
shall be retained by the manufacturer for at least 10 years after the last date of production of the
protected and sheathed strands for prestressing to which they relate.
8.2.4 Shared other party results
A manufacturer may use the results of the product type determination obtained by someone else (e.g.
by another manufacturer, as a common service to manufacturers, or by a product developer), to justify
his own declaration of performance regarding a product that is manufactured according to the same
design (e.g. dimensions) and with raw materials, constituents and manufacturing methods of the same
kind, provided that:
— the results are known to be valid for products with the same essential characteristics relevant for
the product performance;
— in addition to any information essential for confirming that the product has such same
performances related to specific essential characteristics, the other party who has carried out the
determination of the product type concerned or has had it carried out, has expressly accepted to
transmit to the manufacturer the results and the test report to be used for the latter’s product type
determination, as well as information regarding production facilities and the production control
process that can be taken into account for FPC;
— the manufacturer using other party results accepts to remain responsible for the product having
the declared performances and he also:
— ensures that the product has the same characteristics relevant for performance as the one that
has been subjected to the determination of the product type, and that there are no significant
differences with regard to production facilities and the production control process compared
to that used for the product that was subjected to the determination of the product type; and
— keeps available a copy of the determination of the product type report that also contains the
information needed for verifying that the product is manufactured according to the same
design and with raw materials, constituents and manufacturing methods of the same kind.
8.3 Factory production control (FPC)
8.3.1 General
The manufacturer shall establish, document and maintain an FPC system to ensure that the products
placed on the market comply with the declared performance of the essential characteristics.
The FPC system shall consist of procedures, regular inspections and tests and/or assessments and the
use of the results to control raw and other incoming materials or components, equipment, the
production process and the product.
All the elements, requirements and provisions adopted by the manufacturer shall be documented in a
systematic manner in the form of written policies and procedures.
This factory production control system documentation shall ensure a common understanding of the
evaluation of the constancy of performance and enable the achievement of the required product
performances and the effective operation of the production control system to be checked. Factory
production control therefore brings together operational techniques and all measures allowing
maintenance and control of the compliance of the product with the declared performances of the
essential characteristics.
In case the manufacturer has used shared product type results, the FPC shall also include the
appropriate documentation as foreseen in 8.2.4.
8.3.2 Requirements
8.3.2.1 General
The manufacturer is responsible for organizing the effective implementation of the FPC system in line
with the content of this product standard. Tasks and responsibilities in the production control
organization shall be documented and this documentation shall be kept up-to-date.
The responsibility, authority and the relationship between personnel that manages, performs or verifies
work affecting product constancy, shall be defined. This applies in particular to personnel that need to
initiate actions preventing product non-constancies from occurring, actions in case of non-constancies
and to identify and register product constancy problems.
Personnel performing work affecting the constancy of performance of the product shall be competent
on the basis of appropriate education, training, skills and experience for which records shall be
maintained.
In each factory the manufacturer may delegate the action to a person having the necessary authority to:
— identify procedures to demonstrate constancy of performance of the product at appropriate stages;
— identify and record any instance of non-constancy;
— identify procedures to correct instances of non-constancy.
The manufacturer shall draw up and keep up-to-date documents defining the factory production
control. The manufacturer's documentation and procedures should be appropriate to the product and
manufacturing process. The FPC system should achieve an appropriate level of confidence in the
constancy of performance of the product. This involves:
a) the preparation of documented procedures and instructions relating to factory production control
operations, in accordance with the requirements of the technical specification to which reference is
made;
b) the effective implementation of these procedures and instructions;
c) the recording of these operations and their results;
d) the use of these results to correct any deviations, repair the effects of such deviations, treat any
resulting instances of non-conformity and, if necessary, revise the FPC to rectify the cause of non-
constancy of performance.
Where subcontracting takes place, the manufacturer shall retain the overall control of the product and
ensure that he receives all the information that is necessary to fulfil his responsibilities according to this
European standard.
If the manufacturer has part of the product designed, manufactured, assembled, packed, processed
and/or labelled by subcontracting, the FPC of the subcontractor may be taken into account, where
appropriate for the product in question.
The manufacturer who subcontracts all of his activities may in no circumstances pass the above
responsibilities on to a subcontractor.
NOTE Manufacturers having an FPC system, which complies with EN ISO 9001 standard and which addresses
the provisions of the present European standard are considered as satisfying the FPC requirements of the
Regulation (EU) No 305/2011.
8.3.2.2 Equipment
8.3.2.2.1 Testing
All weighing, measuring and testing equipment shall be calibrated and regularly inspected according to
documented procedures, frequencies and criteria.
8.3.2.2.2 Manufacturing
All equipment used in the manufacturing process shall be regularly inspected and maintained to ensure
that use, wear or failure does not cause inconsistency in the manufacturing process. Inspections and
maintenance shall be carried out and recorded in accordance with the manufacturer’s written
procedures and the records retained for the period defined in the manufacturer's FPC procedures.
8.3.2.3 Raw materials and components
The specifications of all incoming raw materials and components shall be documented, as shall the
inspection scheme for ensuring their compliance. In case supplied kit components are used, the
constancy of performance system of the component shall be that given in the appropriate harmonized
technical specification for that component.
8.3.2.4 Traceability and marking
Individual coils of protected and sheathed strand shall be identifiable and traceable with regard to their
production origin. The manufacturer shall have written procedures ensuring that processes related to
affixing traceability codes and/or markings are inspected regularly.
8.3.2.5 Controls during manufacturing process
The manufacturer shall plan and carry out production under controlled conditions.
8.3.2.6 Product testing and evaluation
8.3.2.6.1 Unit of product and unit of inspection
The unit of product is the coil of strand as delivered to the customer.
The unit of inspection shall be composed of a maximum of 50 tonnes of protected and sheathed strands
of the same type (S or A) and diameter produced from the same constituent materials according to the
same manufacturing conditions in a period not exceeding 7 days.
8.3.2.6.2 Frequency of sampling and inspection for factory production control
The protected and sheathed strands shall be sampled and tested in accordance with Table 3.
Table 4 — Sampling and testing frequency for factory production control of protected
and sheathed strands
Base strand According to prEN 10138-1 and
prEN 10138-3 or prEN 10337
Mechanical and technological properties
(prestressing steel strand manufacturers
Surface conditions (free of rust)
holding a certificate of constancy of the
performance of the product) or CE
marking
Every unit of manufacture or unit of
inspection according to prEN 10138-1
and prEN 10138-3 or prEN 10337
Protection material Grease
Inspection certificate 3.1 including results
for the following properties: aspect, cone
penetration, dropping point, chemical
signature, by the supplier for each batch
Wax
Inspection certificate 3.1 including results
for  the following properties: aspect, cone
penetration, dropping point, chemical
signature, by the supplier for each batch
Material for sheathing Declaration of conformity to the
properties specified in Tables B.1 and B.2
by the supplier for each batch
Protection and sheath regular tests One test per unit of product
Overall diameter
Straightness
Mass of the protection product
Thickness of the sheath
Surface conditions
Protection and sheath other tests One test per unit of inspection
Initial resistance to friction One test every 20 units of inspection with
a minimum of one test every 6 months
Water tightness and impact resistance
...