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25 Manufacturing engineering
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EVS-EN IEC 62541-2:2026
OPC unified architecture - Part 2: Security model
Scope: IEC 62541-2:2026 describes the OPC Unified Architecture (OPC UA) security model. It describes the security threats of the physical, hardware, and software environments in which OPC UA is expected to run. It describes how OPC UA relies upon other standards for security. It provides definition of common security terms that are used in this and other parts of the IEC 62541 series. It gives an overview and concept of the security features that are specified in other parts of the series. It references services, mappings, and Profiles that are specified normatively in other parts of the 62541 series. It provides suggestions or best practice guidelines on implementing security. Any seeming ambiguity between this document and one of the other normative parts does not remove or reduce the requirement specified in the other normative part.
There are many different aspects of security that are addressed when developing applications. However, since OPC UA specifies a communication protocol, the focus is on securing the data exchanged between applications. This does not mean that an application developer can ignore the other aspects of security like protecting persistent data against tampering. It is important that the developers look into all aspects of security and decide how they can be addressed in the application. Common security features for industrial Controls are defined in IEC 62443-4-2 and OPC UA defined a relationship to them in Annex A.
This document is directed to readers who will develop OPC UA applications. It is also for end Users that wish to understand the various security features and functionality provided by OPC UA. It also offers some recommendations that can be applied when deploying systems. These recommendations are generic in nature since the details would depend on the actual implementation of the OPC UA applications and the choices made for the site security.
This edition cancels and replaces the third edition of IEC TR 62541-2, published in 2020.This edition constitutes a technical revision.
There are many different aspects of security that are addressed when developing applications. However, since OPC UA specifies a communication protocol, the focus is on securing the data exchanged between applications. This does not mean that an application developer can ignore the other aspects of security like protecting persistent data against tampering. It is important that the developers look into all aspects of security and decide how they can be addressed in the application. Common security features for industrial Controls are defined in IEC 62443-4-2 and OPC UA defined a relationship to them in Annex A.
This document is directed to readers who will develop OPC UA applications. It is also for end Users that wish to understand the various security features and functionality provided by OPC UA. It also offers some recommendations that can be applied when deploying systems. These recommendations are generic in nature since the details would depend on the actual implementation of the OPC UA applications and the choices made for the site security.
This edition cancels and replaces the third edition of IEC TR 62541-2, published in 2020.This edition constitutes a technical revision.
Base documents: IEC 62541-2:2026; EN IEC 62541-2:2026
Replaces: CLC IEC/TR 62541-2:2021
EVS-EN IEC 61512-1:2026
Batch control - Part 1: Models and terminology
Scope: IEC 61512-1:2026 applies to systems, specifications, and their use for implementing batch and related procedure-oriented manufacturing controls in the process industries. This document establishes a reference model framework for procedure-oriented control, defines terms to help explain the model relationships and usage, and describes general criteria for evaluating conformance. This follows the principle of separation between recipe procedural elements and equipment procedural elements enabling operations to define recipes without the need of changes in equipment procedures.
This second edition cancels and replaces the first edition published in 1997. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) Models and text are modified to provide more detail and clarity. Key clarifications are:
1) Two types of equipment modules are defined: generic and recipe-aware. All recipe-aware equipment modules contain procedural control and can be used as phases in the recipe.
2) Execution of all procedural control contained directly in units is part of the Unit Supervision activity.
3) The relationships between types of recipes, recipe components, and equipment control are more fully described and illustrated.
4) Entity relationship diagrams have been replaced with more intuitive UML instance diagrams, except for the equipment entity model.
5) The transition diagram for the procedural states example has been updated with a more intuitive and complete UML state diagram.
6) References to other standards in the series and to IEC 62264 are included to provide direction for further clarification of selected topics.
7) Activity names are capitalised to help prevent confusion with similar terms, such as their underlying functions.
b) Previous Clauses 4 through 6 (now Clauses 4 through 8) were rearranged to provide a clearer top-down organisation of the document. Key changes are:
1) Removing the lower levels of the physical (role-based equipment) model (see 4.4.2) to eliminate redundancy because their groupings are defined by the associated functionality in the equipment entity model and are not meaningful for batch control without those associations.
2) Describing equipment control and the equipment entity model immediately after the physical (role-based equipment) model and describing each level as completely as possible without excessive use of forward references (see 4.4.3).
3) Combining the descriptions of basic, procedural, and coordination control with their usage in each type of equipment entity, providing a single consolidated discussion of each type of control (see Clause 5)
4) Additional considerations to support application of the models have been grouped in Clause 7 to clarify their supporting relationship to the core models.
c) Clause 9 was added to define completeness, compliance, and conformance in relation to this document.
d) Annex B was added to provide a more expansive procedural state reference model. The model found in Clause 7 can be considered a collapsed version of this more general model.
e) Annex C was added to clarify a number of points concerning the models, their application, and the new Clause 9 on conformance and compliance.
f) Annex E was added to more fully describe the changes in this update to IEC 61512-1:1997.
This second edition cancels and replaces the first edition published in 1997. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) Models and text are modified to provide more detail and clarity. Key clarifications are:
1) Two types of equipment modules are defined: generic and recipe-aware. All recipe-aware equipment modules contain procedural control and can be used as phases in the recipe.
2) Execution of all procedural control contained directly in units is part of the Unit Supervision activity.
3) The relationships between types of recipes, recipe components, and equipment control are more fully described and illustrated.
4) Entity relationship diagrams have been replaced with more intuitive UML instance diagrams, except for the equipment entity model.
5) The transition diagram for the procedural states example has been updated with a more intuitive and complete UML state diagram.
6) References to other standards in the series and to IEC 62264 are included to provide direction for further clarification of selected topics.
7) Activity names are capitalised to help prevent confusion with similar terms, such as their underlying functions.
b) Previous Clauses 4 through 6 (now Clauses 4 through 8) were rearranged to provide a clearer top-down organisation of the document. Key changes are:
1) Removing the lower levels of the physical (role-based equipment) model (see 4.4.2) to eliminate redundancy because their groupings are defined by the associated functionality in the equipment entity model and are not meaningful for batch control without those associations.
2) Describing equipment control and the equipment entity model immediately after the physical (role-based equipment) model and describing each level as completely as possible without excessive use of forward references (see 4.4.3).
3) Combining the descriptions of basic, procedural, and coordination control with their usage in each type of equipment entity, providing a single consolidated discussion of each type of control (see Clause 5)
4) Additional considerations to support application of the models have been grouped in Clause 7 to clarify their supporting relationship to the core models.
c) Clause 9 was added to define completeness, compliance, and conformance in relation to this document.
d) Annex B was added to provide a more expansive procedural state reference model. The model found in Clause 7 can be considered a collapsed version of this more general model.
e) Annex C was added to clarify a number of points concerning the models, their application, and the new Clause 9 on conformance and compliance.
f) Annex E was added to more fully describe the changes in this update to IEC 61512-1:1997.
Base documents: IEC 61512-1:2026; EN IEC 61512-1:2026
Replaces: EVS-EN 61512-1:2002
EVS-EN IEC 60519-4:2022/A1:2026
Safety in installations for electroheating and electromagnetic processing - Part 4: Particular requirements for arc furnace installations
Scope: Amendment to EN IEC 60519-4:2022
Base documents: IEC 60519-4:2021/AMD1:2026; EN IEC 60519-4:2022/A1:2026
ISO 20895:2026
Welded joints performance for seismic steel structures
Scope: This document defines two performance levels for welded joints, namely Basic Demand and Critical Demand, for longitudinal tensile strength of weld metals, impact toughness of weld metals and heat affected zones (HAZ) to suit the level of seismic performance specifications required for welded steel structures.
This document supplements the provisions of the standards or codes for welding procedure qualification in the application of new steel materials, welding consumables, or complex joints, for welds that require the performance of Basic or Critical Demands as specified by the engineer in the contract.
This document supplements the provisions of the standards or codes for welding procedure qualification in the application of new steel materials, welding consumables, or complex joints, for welds that require the performance of Basic or Critical Demands as specified by the engineer in the contract.
Base documents:
Replaced standards
EVS-EN 14879-1:2005
Organic coating systems and linings for protection of industrial apparatus and plants against corrosion caused by aggressive media - Part 1: Terminology, design and preparation of substrate
Scope: This European Standard describes the terminology, the design and the preparation of the substrate of industrial apparatus for the protection against corrosion caused by aggressive media. These industrial apparatus include, for example, reaction tanks, storage tanks, floors in industrial plants, in general for production and handling of chemicals.
Base documents: EN 14879-1:2005
EVS-EN 14879-2:2007
Organic coating systems and linings for protection of industrial apparatus and plants against corrosion caused by aggressive media - Part 2: Coatings on metallic components
Scope: This European Standard specifies the requirements for and methods of testing of organic coatings which are applied to metallic process engineering equipment that will come in contact with chemical substances (liquids, solids and gases). The requirements specified here may be used for the purposes of quality control (e.g. As agreed between the contract partners or been given by national regulations).
Base documents: EN 14879-2:2006
EVS-EN 14879-3:2007
Organic coating systems and linings for protection of industrial apparatus and plants against corrosion caused by aggressive media - Part 3: Coatings on concrete components
Scope: This European Standard specifies the requirements for and methods of testing of organic coatings which are applied to concrete process engineering equipment that will come in contact with aggressive chemical substances (liquids, solids and gases). The requirements specified here may be used for the purposes of quality control (e.g. as agreed between the contract partners).
Base documents: EN 14879-3:2006
EVS-EN 14879-4:2007
Organic coating systems and linings for protection of industrial apparatus and plants against corrosion caused by aggressive media - Part 4: Linings on metallic components
Scope: This document describes the requirements for and methods of testing of organic linings which are applied to metallic process engineering equipment that will come in contact with chemical substances. The requirements specified here may be used for the purposes of quality control (e.g. as agreed between the contract partners1)).
Base documents: EN 14879-4:2007
EVS-EN 14879-5:2007
Organic coating systems and linings for protection of industrial apparatus and plants against corrosion caused by aggressive media - Part 5: Linings on concrete components
Scope: This document describes the requirements for and methods of testing of organic linings which are applied to concrete process engineering equipment that will come in contact with aggressive chemical substances (liquids, solids and gases). The requirements specified here may be used for the purposes of quality control (e.g. as agreed between the contract partners).
Base documents: EN 14879-5:2007
EVS-EN 14879-6:2010
Organic coating systems and linings for protection of industrial apparatus and plants against corrosion caused byaggressive media - Part 6: Combined linings with tile and brick layers
Scope: This European Standard describes the requirements for and methods of testing of combined systems with tile and brick layers which are applied to concrete or metallic process engineering equipment that will come in contact with chemical substances (liquids, solids and gases). The requirements specified here may be used for the purposes of quality control (e.g. as agreed between the contract partners or having been given by na-tional regulations1)).
Base documents: EN 14879-6:2009
ISO 14306:2017
Industrial automation systems and integration -- JT file format specification for 3D visualization
Scope: ISO 14306:2017 defines the syntax and semantics of a file format for the 3D visualization and interrogation of lightweight geometry and product manufacturing information derived from CAD systems, using visualization software tools that do not need the full capability of a CAD system.
ISO 14306:2017 has been adopted as a 3D visualization capability in addition to the ISO 10303 series.
The file format supports the following information:
� facet information (triangles), stored with geometry compression techniques
� visual attributes such as lights, textures and materials
� product manufacturing information, such as dimensions, tolerances and other attributes
� boundary representation (b-rep) solid model shape representations. Several alternatives are available, including a representation based on the geometry standard defined in ISO 10303
� configuration representations
� delivery methods such as asynchronous streaming of content
ISO 14306:2017 does not specify the implementation of, or definition of a run-time architecture for viewing or processing of the file format.
ISO 14306:2017 has been adopted as a 3D visualization capability in addition to the ISO 10303 series.
The file format supports the following information:
� facet information (triangles), stored with geometry compression techniques
� visual attributes such as lights, textures and materials
� product manufacturing information, such as dimensions, tolerances and other attributes
� boundary representation (b-rep) solid model shape representations. Several alternatives are available, including a representation based on the geometry standard defined in ISO 10303
� configuration representations
� delivery methods such as asynchronous streaming of content
ISO 14306:2017 does not specify the implementation of, or definition of a run-time architecture for viewing or processing of the file format.
Base documents:
EVS-EN 61512-1:2002
Batch control - Part 1: Models and terminology
Scope: This part of the standard on Batch Control defines reference models for batch control as used in the process industries and terminology that helps explain the relationships between these modles and terms. This standard may not apply to all batch control applications.
Base documents: IEC 61512-1:1997; EN 61512-1:1999
Replaced: EVS-EN IEC 61512-1:2026
CLC IEC/TR 62541-2:2021
OPC unified architecture - Part 2: Security Model
Scope: This part of IEC 62541 describes the OPC Unified Architecture (OPC UA) security model. It describes the security threats of the physical, hardware, and software environments in which OPC UA is expected to run. It describes how OPC UA relies upon other standards for security. It provides definition of common security terms that are used in this and other parts of the OPC UA specification. It gives an overview of the security features that are specified in other parts of the OPC UA specification. It references services, mappings, and Profiles that are specified normatively in other parts of the OPC UA Specification. It provides suggestions or best practice guidelines on implementing security. Any seeming ambiguity between this part and one of the other normative parts does not remove or reduce the requirement specified in the other normative part.
Base documents: IEC/TR 62541-2:2020; CLC IEC/TR 62541-2:2021
Replaced: EVS-EN IEC 62541-2:2026
Drafts
FprEN IEC 62841-4-11:2026/prAA:2026
Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 4-11: Particular requirements for edgers
Scope: Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 4-11: Particular requirements for edgers
Base documents: FprEN IEC 62841-4-11:2026/prAA:2026