CEN/TS 17959:2023

SLOVENSKI STANDARD
01-november-2023
Varnost zabaviščnih atrakcij in naprav: Priporočila za kakovost proizvodnje za
strojne komponente
Safety of amusement rides and devices: Manufacturing Quality Recommendations for
Machinery Components
Sicherheit von Fahrgeschäften und Vergnügungsanlagen - Teil 4: Empfehlungen für die
Herstellung von Maschinenbauteilen
Sécurité des manèges et des dispositifs de divertissement - Recommandations relatives
à la qualité de fabrication pour les éléments de machinerie
Ta slovenski standard je istoveten z: CEN/TS 17959:2023
ICS:
97.200.99 Druga oprema za razvedrilo Other equipment for
entertainment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CEN/TS 17959
TECHNICAL SPECIFICATION
SPÉCIFICATION TECHNIQUE
September 2023
TECHNISCHE SPEZIFIKATION
ICS 97.200.99
English Version
Safety of amusement rides and devices: Manufacturing
Quality Recommendations for Machinery Components
Sécurité des manèges et des dispositifs de Sicherheit von Fahrgeschäften und
divertissement - Recommandations relatives à la Vergnügungsanlagen: Empfehlungen für die
qualité de fabrication pour les éléments de machinerie Herstellung von Maschinenbauteilen
This Technical Specification (CEN/TS) was approved by CEN on 23 July 2023 for provisional application.

The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to
submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard.

CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS
available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in
parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached.

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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 17959:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Applicability of the Machinery component quality grade method. 7
5 Quality Grade . 8
5.1 Sub-components of machinery components . 8
5.2 Determination of Quality Grade . 10
5.2.1 General . 10
5.2.2 Redundancy considerations . 10
5.2.3 Commercial parts . 10
6 Quality Requirements on Machinery Components . 15
Bibliography . 19
European foreword
This document (CEN/TS 17959:2023) has been prepared by Technical Committee CEN/TC 152
“Fairground and amusement park machinery and structures - Safety”, the secretariat of which is held by
UNI.
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 announce this Technical Specification: 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
This document was prepared with reference to EN 13814-1:2019, 5.4.1, 5.4.1.1.
When designing components for an amusement device it is important to take into account the intended
quality of the manufactured and installed parts. The manufacturing quality requirements will vary
depending upon the consequences in case of a failure of the component. For example, a component whose
failure could cause serious injury of a passenger would have a high quality level, to ensure that the risk
of material failure (such as raw material quality and treatment) can be reduced to a tolerable level. The
intent of this document is to propose a method which enables the designer to be guided as to what should
be the minimum applicable quality requirements for each of the parameters listed. Three quality grades
(QG) are defined here.
The manufacturing quality requirements are identified as an integral part of risk mitigation.
If the standards used for the design already reference quality requirements, these quality requirements
should be used as long as they are at least equivalent to quality requirements used in this document.
1 Scope
This document provides a method on how to assign minimum acceptable manufacturing quality
requirements to amusement device metallic components which have been classified as machinery
components. Bonded assemblies made in plastic composites are excluded from this scope. Quality
requirements can be found in EN 13814-1:2019, 5.4.3.7.
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 1090-2:2018, Execution of steel structures and aluminium structures - Part 2: Technical requirements
for steel structures
EN 1090-3:2019, Execution of steel structures and aluminium structures - Part 3: Technical requirements
for aluminium structures
EN 1369:2012, Founding - Magnetic particle testing
EN 1371-1:2011, Founding - Liquid penetrant testing- Part 1: Sand, gravity die and low pressure die
castings
EN 1563, Founding - Spheroidal graphite cast irons
EN 1993-1-10, Eurocode 3: Design of steel structures - Part 1-10: Material toughness and through-thickness
properties
EN 10160:1999, Ultrasonic testing of steel flat product of thickness equal or greater than 6 mm (reflection
method)
EN 10164, Steel products with improved deformation properties perpendicular to the surface of the product
- Technical delivery conditions
EN 10204:2004, Metallic products - Types of inspection documents
EN 10228-1:2016, Non-destructive testing of steel forgings - Part 1: Magnetic particle inspection
EN 10228-2:2016, Non-destructive testing of steel forgings - Part 2: Penetrant testing
EN 10228-3:2016, Non-destructive testing of steel forgings - Part 3: Ultrasonic testing of ferritic or
martensitic steel forgings
EN 10228-4:2016, Non-destructive testing of steel forgings - Part 4: Ultrasonic testing of austenitic and
austenitic-ferritic stainless steel forgings
EN 10308:2001, Non destructive testing - Ultrasonic testing of steel bars
EN 12681 (all parts), Founding — Radiographic testing
EN 13814-1:2019, Safety of amusement rides and amusement devices - Part 1: Design and manufacture
EN ISO 945-1:2019, Microstructure of cast irons - Part 1: Graphite classification by visual analysis (ISO 945-
1:2019)
EN ISO 10893-11:2011, Non-destructive testing of steel tubes - Part 11: Automated ultrasonic testing of the
weld seam of welded steel tubes for the detection of longitudinal and/or transverse imperfections (ISO
10893-11:2011)
EN ISO 16228:2018, Fasteners - Types of inspection documents (ISO 16228:2017)
EN ISO/IEC 17025:2017, General requirements for the competence of testing and calibration laboratories
(ISO/IEC 17025:2017)
ISO 3183:2019, Petroleum and natural gas industries — Steel pipe for pipeline transportation systems
ISO 4967:2013, Steel — Determination of content of non-metallic inclusions — Micrographic method using
standard diagrams
ASTM B594, Standard Practice for Ultrasonic Inspection of Aluminum-Alloy Wrought Products
ASTM B618, Standard Specification for Aluminum-Alloy Investment Castings
ASTM E155, Standard Reference Radiographs for Inspection of Aluminum and Magnesium Castings
ASTM E186, Standard Reference Radiographs for Heavy-Walled (2 to 412 in. (50.8 to 114 mm)) Steel
Castings
ASTM E280, Standard Reference Radiographs for Heavy-Walled (412 to 12 in. (114 to 305 mm)) Steel
Castings
ASTM E446, Standard Reference Radiographs for Steel Castings Up to 2 in. (50.8 mm) in Thickness
ASTM E689, Standard Reference Radiographs for Ductile Iron Castings
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
dynamic load
load which results in fatigue stresses as also defined in EN 13814-1:2019, 4.7.3.2
3.2
static load
any load not considered as a dynamic load (3.1)
3.3
commercially available components or parts
parts which are listed in a catalogue, where the performance specification of the part is defined by its
technical datasheet
Note 1 to entry: The terms “components” and “parts” are synonymous.
Note 2 to entry: Off the shelf parts are synonymous to commercially available parts.
Note 3 to entry: Mass produced bespoke parts (custom designed) are not considered to be commercially
available parts.
3.4
quality grade
QG
classification of machinery parts as defined in Clause 5
3.5
manufacturing
process of creation, including material, machining, welding, cutting, assembly and verification of all steps
4 Applicability of the machinery component quality grade method
In order to assess whether and how this method is applicable for the component in question, the following
flow diagram (Figure 1) shall be used.
Figure 1 — Applicability of the Machinery component quality grade method
5 Quality grade
5.1 Sub-components of machinery components
Depending on the complexity of the design, machinery components may consist of one or more sub-
components. Figure 2 contains examples of sub-components and their reference to potential steps in
production.
Figure 2 — Sub-Components of a Machinery Component
Sub-components in Figure 2 are:
— formed parts,
— machined parts,
— bonded assemblies,
— machined bonded assemblies,
— fastenings/ fitting elements.
5.2 Determination of quality grade
5.2.1 General
Manufacturing quality requirements on machinery components and their sub-components depend on the
risk of failure and their nature of loading (static or dynamic). Based on these parameters the components
can be classified in three different quality grades. Figure 4 shall be used to identify the appropriate quality
grade QG.
Figure 3 can be used for sub-components, and machinery components.
It shall be used assuming that all other components are in place and functioning as designed.
QG requirements are only needed, with regard to the structural safety of a part, for parts whose failure in
static or dynamic conditions can result in harm.
Other factors may lead to different quality requirements being applied. For example, the engineer could
raise the QG level if he considers that there is an increased risk due to the complexity of the production
pro
...