EN 818-3:1999+A1:2008
(Main)Short link chain for lifting purposes - Safety - Part 3: Medium tolerance chain for chain slings - Grade 4
Short link chain for lifting purposes - Safety - Part 3: Medium tolerance chain for chain slings - Grade 4
This part of EN 818 specifies the requirements related to safety for short link chains, grade 4, of medium tolerance for use in chain slings to EN 818-4:1996+A1 and for general lifting purposes. The standard is applicable to electrically welded round steel short link chains, conforming to !EN 818-1:1996+A1", which are intended for lifting objects, materials or goods.
The range of nominal sizes of chain covered by this Part of EN 818 is from 7 mm to 45 mm.
The hazards covered by this Part of EN 818 are identified in clause 4.
Annex A contains the bases for calculation of tabulated values for dimensions, working load limits and mechanical properties.
Annex B gives information on the mass/metre of chain.
Annex C gives an example of a designation system for chains of grade 4.
Annex ZA gives the relationship with EU Directives.
Kurzgliedrige Rundstahlketten für Hebezwecke - Sicherheit - Teil 3: Mitteltolerierte Rundstahlketten für Anschlagketten - Güteklasse 4
Chaînes de levage à maillons courts - Sécurité - Partie 3: Chaînes de tolérance moyenne pour élingues en chaînes - Classe 4
La présente partie de l’EN 818 spécifie les prescriptions relatives à la sécurité pour les chaînes de levage
à maillons courts de classe 4, de tolérance moyenne utilisées dans les élingues en chaîne conformément
à l’EN 818-4:1996+A1 et pour les applications générales de levage."
La gamme de dimensions nominales des chaînes couvertes par cette partie de l'EN 818 va de 7 mm à 45 mm.
Les phénomènes dangereux couverts par cette partie de l'EN 818 sont définis dans l'article 4.
L'annexe A contient les bases pour le calcul des valeurs relatives aux dimensions, aux charges maximales
d'utilisation et aux propriétés mécaniques, indiquées dans les tableaux.
L'annexe B donne une information sur la masse linéaire des chaînes.
L'annexe C donne un exemple de système de désignation des chaînes de classe 4.
!Les annexes ZA et ZB donnent" la relation avec les Directives UE.
Kratkočlene okrogle verige za dvigovalne namene - Varnost - 3. del: Verige za obesne verige srednje tolerance - Kakovostni razred 4
General Information
Relations
Overview - EN 818-3:1999+A1:2008 (Short link chain, Grade 4)
EN 818-3:1999+A1:2008 is a CEN harmonized safety standard for short link round steel chains (grade 4) of medium tolerance used in lifting applications. It applies to electrically welded short link chains (nominal sizes 7 mm to 45 mm) intended for use in chain slings (see EN 818-4) and general lifting purposes. The standard specifies design, manufacturing, testing and marking requirements to reduce the risk of load release and ensure conformity with EU machinery directives.
Key topics and technical requirements
- Scope & conformity
- Chains must conform to EN 818-1 (general conditions of acceptance) and EN 818-4 for chain slings.
- Harmonized to support EU Directives (relationship shown in Annex ZA/ZB).
- Dimensions & tolerances
- Nominal sizes, material diameter tolerances, weld diameter limits, pitch and link widths are defined (tables provide dimensional limits for 7–45 mm chains).
- Short link definition includes nominal pitch:nominal size ratio of 3:1.
- Materials & heat treatment
- Steel production, deoxidation and heat treatment requirements to ensure required mechanical properties; stainless steel options addressed.
- Mechanical properties & testing
- Requirements for Manufacturing Proof Force (MPF), breaking force (BF) and total ultimate elongation (A).
- Bend deflection (bend test) acceptance criteria and static tensile testing procedures.
- Lot sampling, test frequency and qualification of personnel for verification.
- Safety, marking & certification
- Hazard identification (clause 4) and measures to prevent accidental load release.
- Marking, manufacturer’s certificate and information for use are required.
- Informative annexes
- Annex A: calculation bases for dimensions, Working Load Limits (WLL) and mechanical properties.
- Annex B: mass per metre data.
- Annex C: example designation system for grade 4 chains.
- Annex ZA/ZB: relationship to EU Directives.
Practical applications and who uses it
- Target users:
- Chain manufacturers and heat-treatment specialists
- Lifting equipment designers and fabricators
- Rigging and lifting contractors, safety engineers, inspectors
- Procurement and quality assurance teams specifying certified chain slings
- Typical uses:
- Chain slings and lifting accessories for construction, shipping, heavy industry, and warehousing
- Selection and verification of chains for safe load handling where short-link grade 4 chain is required
Related standards
- EN 818-1 (General conditions of acceptance)
- EN 818-4 / EN 818-5 / EN 818-6 (Chain slings and information for use)
- EN ISO 12100 (Safety of machinery - design principles)
Keywords: EN 818-3:1999+A1:2008, short link chain, grade 4, medium tolerance, chain slings, CEN, lifting safety, working load limits, weld diameter, manufacturing proof force, breaking force.
Frequently Asked Questions
EN 818-3:1999+A1:2008 is a standard published by the European Committee for Standardization (CEN). Its full title is "Short link chain for lifting purposes - Safety - Part 3: Medium tolerance chain for chain slings - Grade 4". This standard covers: This part of EN 818 specifies the requirements related to safety for short link chains, grade 4, of medium tolerance for use in chain slings to EN 818-4:1996+A1 and for general lifting purposes. The standard is applicable to electrically welded round steel short link chains, conforming to !EN 818-1:1996+A1", which are intended for lifting objects, materials or goods. The range of nominal sizes of chain covered by this Part of EN 818 is from 7 mm to 45 mm. The hazards covered by this Part of EN 818 are identified in clause 4. Annex A contains the bases for calculation of tabulated values for dimensions, working load limits and mechanical properties. Annex B gives information on the mass/metre of chain. Annex C gives an example of a designation system for chains of grade 4. Annex ZA gives the relationship with EU Directives.
This part of EN 818 specifies the requirements related to safety for short link chains, grade 4, of medium tolerance for use in chain slings to EN 818-4:1996+A1 and for general lifting purposes. The standard is applicable to electrically welded round steel short link chains, conforming to !EN 818-1:1996+A1", which are intended for lifting objects, materials or goods. The range of nominal sizes of chain covered by this Part of EN 818 is from 7 mm to 45 mm. The hazards covered by this Part of EN 818 are identified in clause 4. Annex A contains the bases for calculation of tabulated values for dimensions, working load limits and mechanical properties. Annex B gives information on the mass/metre of chain. Annex C gives an example of a designation system for chains of grade 4. Annex ZA gives the relationship with EU Directives.
EN 818-3:1999+A1:2008 is classified under the following ICS (International Classification for Standards) categories: 53.020.30 - Accessories for lifting equipment. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 818-3:1999+A1:2008 has the following relationships with other standards: It is inter standard links to EN 818-3:1999/prA1, EN 818-3:1999. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 818-3:1999+A1:2008 is associated with the following European legislation: EU Directives/Regulations: 2006/42/EC, 98/37/EC; Standardization Mandates: M/079, M/396. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
You can purchase EN 818-3:1999+A1:2008 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2008
.UDWNRþOHQHRNURJOHYHULJH]DGYLJRYDOQHQDPHQH9DUQRVWGHO 9HULJH]D
REHVQHYHULJHVUHGQMHWROHUDQFH.DNRYRVWQLUD]UHG
Short link chain for lifting purposes - Safety - Part 3: Medium tolerance chain for chain
slings - Grade 4
Kurzgliedrige Rundstahlketten für Hebezwecke - Sicherheit - Teil 3: Mitteltolerierte
Rundstahlketten für Anschlagketten - Güteklasse 4
Chaînes de levage à maillons courts - Sécurité - Partie 3: Chaînes de tolérance
moyenne pour élingues en chaînes - Classe 4
Ta slovenski standard je istoveten z: EN 818-3:1999+A1:2008
ICS:
53.020.30 Pribor za dvigalno opremo Accessories for lifting
equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 818-3:1999+A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2008
ICS 53.020.30 Supersedes EN 818-3:1999
English Version
Short link chain for lifting purposes - Safety - Part 3: Medium
tolerance chain for chain slings - Grade 4
Chaînes de levage à maillons courts - Sécurité - Partie 3: Kurzgliedrige Rundstahlketten für Hebezwecke - Sicherheit
Chaînes de tolérance moyenne pour élingues en chaînes - - Teil 3: Mitteltolerierte Rundstahlketten für Anschlagketten
Classe 4 - Güteklasse 4
This European Standard was approved by CEN on 16 April 1999 and includes Amendment 1 approved by CEN on 10 February 2008.
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 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 Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 818-3:1999+A1:2008: E
worldwide for CEN national Members.
Contents Page
Foreword.4
Introduction .5
1 Scope .5
2 Normative references .5
3 Terms and definitions .6
4 Hazards .6
5 Safety requirements .7
5.1 General.7
5.2 Dimensions.7
5.2.1 Nominal size of chain, d .7
n
5.2.2 Tolerance on material diameter (except at the weld).7
5.2.3 Weld diameter .7
5.2.4 Length dimensionally affected by welding .7
5.2.5 Pitch and widths .7
5.3 Materials and heat treatment.9
5.3.1 !!General .9
!!
5.3.2 Quality of material.9
5.3.3 Heat treatment.10
5.3.4 !!!!Stainless steel.10
5.4 Mechanical properties.10
5.4.1 Manufacturing proof force (MPF).10
5.4.2 Breaking force (BF) and total ultimate elongation (A) .10
5.4.3 Bend deflection.10
6 Verification of safety requirements.11
6.1 Qualification of personnel .11
6.2 Size of lot and selection of samples.12
6.3 Manufacturing proof force, breaking force and total ultimate elongation.12
6.3.1 Static tensile test .12
6.3.2 Manufacturing proof force acceptance criteria .12
6.3.3 Breaking force and total ultimate elongation acceptance criteria.12
6.4 Bend deflection.12
6.4.1 Bend test.12
6.4.2 Bend deflection acceptance criteria .13
7 Marking .13
8 Manufacturer's certificate .13
9 !!!!Information"""" for use .13
Annex A (informative) Calculation of dimensions, working load limits and mechanical properties .14
A.1 Dimensions and tolerances .14
A.2 Working load limits and mechanical properties.14
Annex B (informative) Mass of chain .17
Annex C (informative) Designation system for chain (medium tolerance) - Grade 4.18
Annex ZA (informative) !!!!Relationship between this European Standard and the Essential
Requirements of EU Directive 98/37/EC.19
Annex ZB (informative) !!!!Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC.20
!!!!Bibliography .21
Foreword
This document (EN 818-3:1999+A1:2008) has been prepared by Technical Committee CEN/TC 168 “Chains,
ropes, webbing, slings and accessories - Safety”, the secretariat of which is held by BSI.
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 October 2008 and conflicting national standards shall be withdrawn at
the latest by October 2008.
This document includes Amendment 1, approved by CEN on 2008-02-10.
This document supersedes EN 818-3:1999.
The start and finish of text introduced or altered by amendment is indicated in the text by tags ! ".
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive(s).
!For relationship with EU Directive(s), see informative Annexes ZA and ZB, which are integral parts of this
document."
The other Parts of EN 818 are:
Part 1 : General conditions of acceptance
Part 2 : Medium tolerance chain for chain slings - Grade 8
Part 4 : Chain slings - Grade 8
Part 5 : Chain slings - Grade 4
Part 6 : Chain slings - Specification for information for use and maintenance to be provided by the
manufacturer
Part 7 : Fine tolerance chains for hoists, Grade T (types T, DAT, DT).
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and United Kingdom.
Introduction
This European Standard has been prepared to be a harmonized standard to provide one means of conforming
with the essential safety requirements of the Machinery Directive and associated EFTA regulations.
The Directive stipulates that where chain with welded links is used for lifting accessories it is to be of short link
type and for the purposes of this standard this is chain having a ratio of nominal pitch to nominal size of 3:1.
The extent to which hazards are covered is indicated in the scope. In addition, lifting equipment shall conform
as appropriate to !EN ISO 12100" for hazards which are not covered by this standard.
!This standard is a Type C standard as stated in EN ISO 12100.
When provisions of this type C standard are different from those which are stated in type A or B standards, the
provisions of this type C standard take precedence over the provisions of the other standards, for equipment
that have been designed and built according to the provisions of this type C standard."
1 Scope
!This part of EN 818 specifies the requirements related to safety for short link chains, grade 4, of medium
tolerance for use in chain slings to EN 818-4:1996+A1 and for general lifting purposes." The standard is
applicable to electrically welded round steel short link chains, conforming to !EN 818-1:1996+A1", which
are intended for lifting objects, materials or goods.
The range of nominal sizes of chain covered by this Part of EN 818 is from 7 mm to 45 mm.
The hazards covered by this Part of EN 818 are identified in clause 4.
Annex A contains the bases for calculation of tabulated values for dimensions, working load limits and
mechanical properties.
Annex B gives information on the mass/metre of chain.
Annex C gives an example of a designation system for chains of grade 4.
Annex ZA gives the relationship with EU Directives.
2 Normative references
This European Standard incorporates by dated or undated reference provisions from other publications.
These normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of, any of these publications apply to
this European Standard only when incorporated in it by amendment or revision. For undated references, the
latest edition of the publication referred to applies.
!deleted text"
!EN 818-1:1996+A1:2008", Short link chain for lifting purposes - Safety – Part 1: General conditions of
acceptance
!EN 818-6:2000+A1", Short link chain for lifting purposes - Safety – Part 6: Chain slings - Specification
for information for use and maintenance to be provided by the manufacturer
EN 1050:1996, Safety of machinery – Principles for risk assessment
!EN 10025 (all parts), Hot rolled products of structural steels"
!EN 10088-3, Stainless steels – Part 3: Technical delivery conditions for semi-finished products, bars, rods,
wire, sections and bright products of corrosion resisting steels for general purposes
EN ISO 12100-1, Safety of machinery - Basic concepts, general principles for design - Part 1: Basic
terminology, methodology (ISO 12100-1:2003)
EN ISO 12100-2, Safety of machinery - Basic concepts, general principles for design - Part 2: Technical
principles (ISO 12100-2:2003)"
ISO 643, Steels - Micrographic determination of the ferritic or austenitic grain size
3 Terms and definitions
!For the purposes of this document, the terms, definitions and symbols given in EN 818-1:1996+A1 and the
following apply."
4 Hazards
!Accidental release of a load, or release of a load due to" failure of lifting accessories such as chain
slings or their component parts puts at risk either directly or indirectly the safety or health of those persons
within the danger zone of lifting equipment.
In order to provide the necessary strength and durability of lifting accessories this Part of EN 818 lays down
requirements for the design, manufacture and testing to ensure that specified levels of performance are met.
Fatigue failure has not been identified as being a haz
...
The standard EN 818-3:1999+A1:2008 is a crucial document that outlines the safety requirements for short link chains, specifically those of grade 4, utilized in chain slings designed for lifting purposes. This standard is particularly relevant in settings where safety is paramount, as it addresses the specifications for electrically welded round steel short link chains, thereby ensuring compliance with the general lifting purposes laid out in EN 818-4:1996+A1. One of the significant strengths of this standard is its comprehensive scope, which encompasses a range of nominal sizes from 7 mm to 45 mm. This extensive coverage allows for a versatile application of the standard across various lifting scenarios, ensuring that users can trust the integrity and safety of the lifting chains they utilize. Additionally, the identification of hazards in clause 4 provides a critical framework for assessing risks associated with the use of medium tolerance chains. The inclusion of Annex A is noteworthy, as it details the calculation bases for tabulated values related to dimensions, working load limits, and mechanical properties. This annex not only supports manufacturers and users in understanding the operational thresholds but also serves as a benchmark for quality and compliance testing. Furthermore, Annex B, which provides information on the mass per meter of the chain, is invaluable for ensuring that lifting operations remain within safe load limits. Annex C introduces a designation system for grade 4 chains, promoting consistency and clarity in the identification of products within the industry. This aspect strengthens communication among manufacturers, distributors, and end-users, facilitating easier compliance with the standard's safety requirements. Moreover, Annex ZA elucidates the standard's relationship with EU Directives, ensuring that users are aware of the regulatory framework surrounding the chains' safety and performance requirements. This connection to broader regulatory measures enhances the standard's relevance in the global market, emphasizing the commitment to maintaining high safety standards in lifting operations. In summary, EN 818-3:1999+A1:2008 stands out as an essential standard for short link chains for lifting purposes, combining rigorous safety requirements with practical guidelines and detailed information that significantly contribute to the overall safety and reliability of chain slings in various lifting applications.
SIST EN 818-3:2001+A1:2008 표준은 중간 공차를 갖는 4등급 단링 체인에 대한 안전 요구사항을 규정하고 있습니다. 이 표준은 EN 818-4:1996+A1에 따른 체인 슬링 및 일반 리프팅 용도로 사용되는 전기 용접 원형 강철 단링 체인에 적용됩니다. 이 표준의 범위는 사용되는 체인의 공식 크기가 7mm에서 45mm까지로, 다양한 크기를 포괄하고 있습니다. 이 표준의 강점 중 하나는 안전성과 관련된 위험 요소를 명확히 정의하고 있다는 점입니다. 제4조에서는 이 표준이 다루는 위험을 구체적으로 식별하고 있어, 사용자들이 해당 체인을 안전하게 사용할 수 있도록 돕습니다. 또한, 부록 A는 치수, 작동 하중 한계 및 기계적 특성의 표준화된 계산 기준을 제공하여, 안정적인 리프팅을 위한 필수적인 정보들을 체계적으로 제시합니다. 부록 B에서는 체인의 중량을 미터당 정보를 제공하여, 사용자가 리프팅 작업을 계획할 때 참고할 수 있도록 하고, 부록 C는 4등급 체인에 대한 지정 시스템의 예를 명확히 하여 표준화된 규격을 따르게 돕습니다. 마지막으로, 부록 ZA는 EU 지침과의 관계를 명시하여, 해당 체인의 사용이 유럽 규제 기준에 부합함을 강조합니다. 종합적으로 SIST EN 818-3:2001+A1:2008 표준은 리프팅 작업의 안전성을 강화하고, 체인 슬링의 품질 및 신뢰성을 보장하는 데 있어 필수적인 기준을 제공합니다. 이 표준은 사용자가 안전하게 작업할 수 있도록 지침을 제공하며, 중간 공차를 갖는 체인 사용에 대한 최고 수준의 안전을 보장합니다.
Die Norm EN 818-3:1999+A1:2008 legt spezifische Anforderungen an Sicherheit für Ketten mit kurzen Gliedern der Klasse 4 fest, die für die Verwendung in Kettenzüge gemäß EN 818-4:1996+A1 sowie für allgemeine Hebezwecke bestimmt sind. Diese Norm ist von großer Bedeutung für die Sicherheitsstandards im Bereich des Hebens, da sie sicherstellt, dass die verwendeten Ketten den strengen Sicherheitsanforderungen entsprechen. Ein hervorzuhebender Aspekt der Norm ist die Abdeckung eines breiten Spektrums von Nenngrößen, die von 7 mm bis 45 mm reichen. Dies ermöglicht eine vielseitige Anwendung in unterschiedlichen Hebeszenarien und stellt sicher, dass Nutzer von Ketten mit den entsprechenden Spezifikationen für verschiedene Einsatzbedingungen versorgt werden. Die Norm beschreibt auch die Gefahren, die in Klausel 4 identifiziert werden, was die Benutzer über potenzielle Risiken informiert und sie in die Lage versetzt, fundierte Entscheidungen zu treffen. Die Stärken dieser Norm liegen nicht nur in den klaren Anforderungen, sondern auch in den unterstützenden Informationen, die in den Anhängen bereitgestellt werden. Annex A liefert die Berechnungsgrundlagen für die tabellierten Werte in Bezug auf Abmessungen, Tragfähigkeitsgrenzen und mechanische Eigenschaften. Dies ist besonders wertvoll für Ingenieure und Konstrukteure, die präzise Berechnungen durchführen müssen. Annex B bietet zudem Informationen über die Masse pro Meter Kette, was für die Logistik und den Transport der Ketten von Bedeutung ist. Ein weiterer positiver Aspekt ist das Beispiel eines Bezeichnungssystems für Ketten der Klasse 4 in Annex C, das eine klare und einheitliche Benennung gewährleistet und somit Verwirrungen im Markt erheblich reduziert. Schließlich klärt Annex ZA die Beziehung zu den EU-Richtlinien, was die Norm nicht nur auf nationaler, sondern auch auf europäischer Ebene relevant macht. Insgesamt ist die Norm EN 818-3:1999+A1:2008 ein äußerst relevantes und starkes Dokument, das die Sicherheit und Zuverlässigkeit bei der Verwendung von kurzen Gliedern Ketten der Klasse 4 für Hebezwecke gewährleistet. Die umfassenden Vorgaben und unterstützenden Materialien machen sie zu einer wertvollen Ressource für Hersteller, Anwender und Sicherheitsbeauftragte in der Industrie.
La norme EN 818-3:1999+A1:2008 présente une spécification indispensable pour les chaînes à maillons courts de grade 4 destinées à être utilisées dans des applications de levage. Son champ d'application se concentre sur les chaînes à tolérance moyenne, qui sont conformes aux exigences de sécurité pour les dispositifs de levage, comme stipulé par la norme EN 818-4:1996+A1. Les forces de cette norme résident dans sa capacité à établir des exigences claires et précises pour la fabrication de chaînes en acier rond électriquement soudées. Couvrant un éventail de tailles nominales allant de 7 mm à 45 mm, cette partie de la norme EN 818 fournit des spécifications essentielles pour assurer la sécurité dans le levage de divers objets et matériaux. Les dangers associés au levage sont systématiquement abordés dans la clause 4, permettant aux utilisateurs de mieux comprendre les risques potentiels et de prendre les mesures nécessaires pour les atténuer. Les annexes fournissent des informations supplémentaires significatives : l'annexe A présente les bases de calcul des valeurs tabulées concernant les dimensions, les limites de charge de travail et les propriétés mécaniques, tandis que l'annexe B détaille la masse par mètre de chaîne, facilitant ainsi le choix approprié pour différents scénarios de levage. L'annexe C offre un système de désignation exemplaire pour les chaînes de grade 4, ce qui contribue à une standardisation nécessaire dans l'industrie. De plus, l'annexe ZA établit un lien entre la norme et les directives de l'UE, renforçant sa pertinence et son intégration dans le cadre réglementaire plus large. En résumé, la norme EN 818-3:1999+A1:2008 est un document crucial garantissant la sécurité et l'efficacité des chaînes utilisées dans le levage, abordant avec pertinence les aspects essentiels de la tolérance, des dimensions, et des propriétés mécaniques des chaînes à maillons courts.
EN 818-3:1999+A1:2008の標準は、リフティング目的で使用される短リンクチェーンの安全要件を定めたもので、特にグレード4に焦点を当てています。この標準は、チェーンスリングと一般的なリフティング用途のために、中程度の公差を持つ短リンクチェーンに関する重要なガイドラインを提供します。 この標準の主な強みは、電気溶接された丸鋼製の短リンクチェーンが対象であり、EN 818-1:1996+A1に準拠している点です。また、標準は7 mmから45 mmまでの公称サイズのチェーンをカバーしており、幅広い用途に適用可能なため、業界全体での関連性が高いです。 危険要因は第4条に明確に特定されており、これにより使用者は潜在的なリスクを把握し、適切な対策を講じることができます。付属書Aには、寸法、作業負荷限界、機械的特性の計算に必要な値が一覧化されており、実用的な情報が揃っています。さらに、付属書Bではチェーンの質量/メートルが提供されており、設計者やエンジニアが計算する際に非常に有益です。 付属書Cは、グレード4のチェーンのための指定システムの例を示しており、標準化された命名規則が導入されています。これにより、業界内での互換性や整合性が向上します。最後に、付属書ZAはEU指令との関係を示しており、欧州連合内での規制の一環としても重要な役割を果たしています。 総じて、EN 818-3:1999+A1:2008は、リフティングチェーンに関する安全基準を提供し、品質と安全性の向上に寄与するための不可欠なドキュメントです。標準の構成と詳細な情報は、業界の専門家にとって非常に価値のあるリソースであり、実際の使用場面においても非常に関連性があります。
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