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CEN

EN 9300-121:2023

(Main)

Aerospace series - LOTAR - LOng Term Archiving and Retrieval of digital technical product documentation such as 3D CAD and PDM data - Part 121: Semantic representation of CAD 3D Explicit Geometry with Product and Manufacturing Information

Aerospace series - LOTAR - LOng Term Archiving and Retrieval of digital technical product documentation such as 3D CAD and PDM data - Part 121: Semantic representation of CAD 3D Explicit Geometry with Product and Manufacturing Information

1.1 Introduction
This document defines the requirements for the long term digital preservation of the Semantic Representation of Product and Manufacturing Information (PMI) with their possible links to the 3D explicit shape and geometry of single CAD parts. The goal is to preserve this 3D information, without loss, with respect to the geometry produced by the original CAD system, following the principles laid down in EN 9300 003 “Fundamentals and Concepts”.
The requirements of EN 9300 110 concerning the preservation of the 3D explicit shape shall apply within this Part.
The term “semantic representation” is defined in Clause 3 “Terms, definitions and abbreviations”.
1.2 In scope
The following outlines the total scope of EN 9300 121:
- machine-interpretable PMI “Semantic Representation” (Refer to clause 3 for definition);
- the association of the above with 3D geometric shapes;
- the possible association of the above with Presentation of 3D Product and Manufacturing Information (PMI), and 3D annotations as defined in EN 9300 120.
In EN 9300 121, the technology used to preserve this 3D information is based on semantic representation. The main use cases are Certification, Product Liability and Design re-use.
For the purpose of this document, the semantic definition is at the level that supports associative “Cross-highlighting” for the purpose of human readability.
1.3 Out of scope
The following is outside the scope:
- PMI presentation (defined in EN 9300 120);
- User defined attributes that are assigned to 3D geometric entities or at the part level. The archiving of the UDA is defined in EN 9300 120.
- How to preserve additional information:
- - property rights;
- - form features;
- - CAD Assemblies.
- The semantics of special Notes outside the scope of PMI: ITAR/EAR, proprietary, and title block information, etc.

Luft- und Raumfahrt - LOTAR - Langzeit-Archivierung und -Bereitstellung digitaler technischer Produktdokumentationen, wie zum Beispiel von 3D-, CAD- und PDM-Daten - Teil 121: Semantische Darstellung von eindeutiger 3D-CAD-Geometrie mit Produkt- und Fertigungsinformationen

Série aérospatiale - LOTAR - Archivage long terme et récupération des données techniques produits numériques telles que CAO, 3D et PDM - Partie 121 : Représentation sémantique de la géométrie CAO 3D explicite avec données de produit et de fabrication

Aeronavtika - LOTAR - Dolgotrajno arhiviranje in iskanje digitalne tehnične dokumentacije o izdelkih, kot so podatki o 3D, CAD in PDM - 121. del: Semantična predstavitev CAD 3D eksplicitnih informacij o geometriji z grafičnim izdelkom in izdelavo

1.1 Uvod
Ta dokument določa zahteve za dolgoročno digitalno shranjevanje semantične predstavitve informacij o grafičnem izdelku in proizvodnji (PMI) z morebitnimi povezavami do 3D eksplicitne oblike in geometrije posameznih delov CAD. Cilj je ohraniti te 3D informacije brez izgub podatkov glede na geometrijo, ki jo proizvede prvotni sistem CAD, v skladu z načeli, določenimi v standardu EN 9300-003 »Osnove in pojmi«.
V tem delu je treba upoštevati zahteve standarda EN 9300-110 v zvezi s shranjevanjem 3D eksplicitne oblike.
Izraz »semantična predstavitev« je opredeljen v točki 3 »Izrazi, definicije in kratice«.
1.2 Znotraj področja uporabe
Naslednje opisuje celotno področje uporabe standarda EN 9300-121:
– strojno berljiva »semantična predstavitev« informacij o grafičnem izdelku in proizvodnji (za definicijo glej točko 3);
– povezava zgoraj navedenega s 3D geometrijskimi oblikami;
– morebitna povezava zgoraj navedenega s predstavitvijo 3D informacij o grafičnem izdelku in proizvodnji ter 3D opomb, kot je opredeljeno v standardu EN 9300-120.
V standardu EN 9300-121 tehnologija, ki se uporablja za shranjevanje teh 3D informacij, temelji na semantični predstavitvi. Glavni primeri uporabe so certificiranje, odgovornost za izdelek in vnovična uporaba zasnove.
Za namene tega dokumenta je semantična definicija na ravni, ki podpira asociativno »navzkrižno poudarjanje«, s čimer se uporabnikom olajša berljivost.
1.3 Zunaj področja uporabe
Naslednje ne spada na področje uporabe:
– predstavitev informacij o izdelku in proizvodnji (opredeljeno v standardu EN 9300-120);
– uporabniško določeni atributi, ki so dodeljeni 3D geometrijskim entitetam ali na ravni dela. Arhiviranje UDA je opredeljeno v standardu EN 9300-120.
– način shranjevanja dodatnih informacij;
– lastninske pravice;
– oblikovne lastnosti;
– sestavi CAD;
– semantika posebnih opomb zunaj področja uporabe informacij o grafičnem izdelku in proizvodnji: ITAR/EAR, zaščitene informacije, podatki v naslovu itd.

General Information

Status
Published
Publication Date
31-Oct-2023
Withdrawal Date
23-Aug-2020
ICS
01.110 - Technical product documentation
35.240.30 - IT applications in information, documentation and publishing
49.020 - Aircraft and space vehicles in general
Technical Committee
ASD-STAN - Aerospace
Drafting Committee
ASD-STAN/D 7/WG 1 - LOTAR Long Term Archiving and Retrieval of Digital Technical Product Data
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
01-Nov-2023
Completion Date
01-Nov-2023
Ref Project
SIST EN 9300-121:2024 - Aerospace series - LOTAR - LOng Term Archiving and Retrieval of digital technical product documentation such as 3D CAD and PDM data - Part 121: Semantic representation of CAD 3D Explicit Geometry with Product and Manufacturing Information

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SLOVENSKI STANDARD
SIST EN 9300-121:2024
01-januar-2024
Aeronavtika - LOTAR - Dolgotrajno arhiviranje in iskanje digitalne tehnične
dokumentacije o izdelkih, kot so podatki o 3D, CAD in PDM - 121. del: Semantična
predstavitev CAD 3D eksplicitnih informacij o geometriji z grafičnim izdelkom in
izdelavo
Aerospace series - LOTAR - LOng Term Archiving and Retrieval of digital technical
product documentation such as 3D CAD and PDM data - Part 121: Semantic
representation of CAD 3D Explicit Geometry with Product and Manufacturing Information
Luft- und Raumfahrt - LOTAR - Langzeit-Archivierung und -Bereitstellung digitaler
technischer Produktdokumentationen, wie zum Beispiel von 3D-, CAD- und PDM-Daten -
Teil 121: Semantische Darstellung von eindeutiger 3D-CAD-Geometrie mit Produkt- und
Fertigungsinformationen
Série aérospatiale - LOTAR - Archivage long terme et récupération des données
techniques produits numériques, telles que CAO 3D et PDM - Partie 121 :
Représentation sémantique de la géométrie CAO 3D explicite avec données de produit
et de fabrication
Ta slovenski standard je istoveten z: EN 9300-121:2023
ICS:
01.110 Tehnična dokumentacija za Technical product
izdelke documentation
35.240.30 Uporabniške rešitve IT v IT applications in information,
informatiki, dokumentiranju in documentation and
založništvu publishing
49.020 Letala in vesoljska vozila na Aircraft and space vehicles in
splošno general
SIST EN 9300-121:2024 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 9300-121:2024

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SIST EN 9300-121:2024


EN 9300-121
EUROPEAN STANDARD

NORME EUROPÉENNE

November 2023
EUROPÄISCHE NORM
ICS 01.110
English Version

Aerospace series - LOTAR - LOng Term Archiving and
Retrieval of digital technical product documentation such
as 3D CAD and PDM data - Part 121: Semantic
representation of CAD 3D Explicit Geometry with Product
and Manufacturing Information
Série aérospatiale - LOTAR - Archivage long terme et Luft- und Raumfahrt - LOTAR - Langzeit-Archivierung
récupération des données techniques produits und -Bereitstellung digitaler technischer
numériques telles que CAO, 3D et PDM - Partie 121 : Produktdokumentationen, wie zum Beispiel von 3D-,
Représentation sémantique de la géométrie CAO 3D CAD- und PDM-Daten - Teil 121: Semantische
explicite avec données de produit et de fabrication Darstellung von eindeutiger 3D-CAD-Geometrie mit
Produkt- und Fertigungsinformationen
This European Standard was approved by CEN on 22 December 2019.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 9300-121:2023 E
worldwide for CEN national Members.

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SIST EN 9300-121:2024
EN 9300-121:2023 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
1.1 In scope . 5
1.2 Out of scope .
...

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1.1 Introduction
This document defines the requirements for the long term digital preservation of the presentation of Product and Manufacturing Information (PMI) with their possible links to the 3D explicit shape and geometry of single CAD parts. The goal is to preserve this 3D information with respect to the geometry and related PMI produced by the original CAD system, following the principles laid down in EN 9300 003 “Fundamentals and Concepts”.
The requirements of EN 9300 110 “CAD mechanical 3D explicit geometry information” about the preservation of the 3D explicit shape shall apply within this document.
The meaning of terms "Presentation" and "Representation", defined in the EN 9300 100 “Common concepts for Long term archiving and retrieval of CAD 3D mechanical information” is required to understand this EN 9300 document.
1.2 In scope
The following outlines the total scope of this document:
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- their possible semantic links with 3D Geometric shape;
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1.3 Out of scope
The following is outside the scope:
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- - property rights;
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1.1 Introduction
This document defines the requirements for the long-term digital preservation of the presentation of Product and Manufacturing Information (PMI) with their possible links to the 3D explicit shape and geometry of CAD assembly structure. The goal is to preserve this 3D information, without loss, with respect to the geometry produced by the original CAD system, following the principles laid down in EN 9300 003 “Fundamentals and Concepts”.
This will allow the retrieval of the assembly structure including the placement information.
This standard extends EN 9300-115 “Explicit CAD Assembly Structure” by including assembly level PMI.
PMI for the assembly structure can be recorded in the same file as the geometry, can be in a nested assembly structure or the PMI will be contained in its own separate file (Side-Car).
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1.2 Out of scope
The following is outside the scope:
- The archiving of assembly Form Features.
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- The geometry defined at assembly level is out of scope for this document.
(This document covers PMI at the assembly level only.)

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1.1   Introduction
This European Standard defines common fundamental concepts for Long Term Archiving and Retrieval of CAD mechanical information for elementary parts and assemblies. It details the "fundamentals and concepts" of EN 9300-003 in the specific context of Long Term Archiving of CAD mechanical models.
CAD mechanical information is divided into assembly structure and geometrical information, both including explicit and implicit geometrical representation, Geometric Dimensioning and Tolerancing with Form Features.
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As technology matures additional parts will be released in order to support new requirements within the aerospace community.
1.2   In scope
The present part describes:
-   the fundamentals and concepts for Long Term Archiving and Retrieval of CAD 3D mechanical information;
-   the document structure of the EN 9300-1XX family, and the links between all these parts;
-   the qualification methods for long term preservation of archived CAD mechanical information; more specially, principles for the CAD validation properties and for verification of the quality of the CAD archived file;
-   specifications for the preservation planning of archived CAD information;
-   specific functions for administration and monitoring of CAD archived mechanical models;
-   the definition of Archive Information Packages for CAD data.
1.3   Out of Scope
The following are out of scope for this part:
-   Long Term Archiving of CAD 2D drawings;
-   other CAD business disciplines, such as piping, tubing, electrical harnesses, composite, sheet metal design, kinematics.
This version does not include:
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1.1   Introduction
This document defines the requirements on a digital archive to preserve for the long term the 3D explicit geometry of single CAD parts. The goal is to preserve the 3D information without loss with respect to the geometry produced by the original CAD system, following the principles laid down in EN 9300-003 "Fundamentals and Concepts" including the use of an open data format.
1.2   In scope
The following is in scope of this part of EN 9300:
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-   validation rules to be stored with the CAD 3D explicit geometry in the archive to check essential characteristics after retrieval (see Clause 9).
NOTE   This includes the geometrical external shape resulting from CAD disciplines 3D entities (e.g., 3D Structural components, 3D Tubing, 3D electrical harness, 3D composite, etc.).
1.3   Out of scope
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This document is a part of the EN 9300 Series. This document addresses requirements for the long term archiving of digital product information, applicable to the international aerospace industry.
Data shall be available to meet regulatory, legal, contractual and business requirements.
Initially, this document sums up the main business requirements for long term archiving of digital product data. Although these requirements are not in themselves normative, when making data available over an extended period, it is a fundamental principle that the contextual data needed to interpret the data is also available.
This document uses the OAIS reference model to provide comparability with other approaches to keeping information available. However, OAIS is a standard reference model for comparison, not a standard for implementation. Consequently, this document defines requirements for processes (and associated technologies) intended to make data available for the life of a product, and does so in terms of the OAIS model.
In dealing with traditional media, the differences between substantial change and unimportant “surface” change are generally self-evident. For example, the yellowing of paper over time, or the encrustation of a gravestone with lichen do not lose the information contained, whereas the loss of pages of a document, or the erosion of the stone do so, and archiving focusses on the preservation of the medium. For digital product data, the medium is unimportant, but the content can be corrupted. The subject of the (many) remaining parts of this standard is the identification of the information that shall be uncorrupted if digital product data is to be usable in the future, and the consequent refinement of processes and procedures to insure this.
This document addresses, archiving of digital product data required for product definition, such as in three dimensional representations a tolerances, material properties, manufacturing data, etc. specification call-outs, product structure and configuration control data, etc. Other parts of the EN 9300 standards will cover more specifically the long term archiving of, for example, composites, electrical systems, product analyses and product simulation information.
This document also addresses managing the evolution of technologies required to ensure the availability and usability of the data for the required archiving period.
This document is not intended to incorporate company specific requirements and does not dictate specific organizational structures within a company. This document does not specify a design or an implementation of an archive system. Actual implementations may distribute responsibilities or break out functionality differently.
This document assumes that all requirements for configuration management of the product data are in place and therefore are not specifically described in this document.
If an organization chooses to implement requirements beyond those outlined in this requirements document, those additional requirements shall not conflict or negatively impact the requirements contained in this document.
Purpose:
This document establishes legal and other business requirements for processes intended to preserve digital data. Data needs to be stored and maintained so that data is retrievable and usable for the required archiving period. In addition, for some business requirements, data needs to be authentically preserved and accessed.
This standard is intended to allow for different implementations based on a company’s specific business environment.

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2.1   PDM data in EN 9300 context
In most modern industrial environments, product data is maintained and managed using product data management (PDM) systems. In general, these systems:
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-   Allow organization of primary technical data into structures to represent the relevant products;
-   Support definition and maintenance processes for products.
Within the EN 9300 context, several domain specific parts address LTA&R for the primary technical data (e.g. CAD, CAx, Documents) as generated by the relevant technical "authoring" systems. The EN 9300 2xx series provides information for LTA&R of product management data for the relevant documents, structures and processes.
NOTE   The terms "PDM data" and "product management data" are synonymous.
This is illustrated in the Figure below.
(...)
Figure 1 - PDM Data and Primary Technical Data
2.2   Objectives and scope of application
This part covers long term archiving (LTA&R) for product management data and relevant process related information (e.g. product structure requirements). Regarding process related information, only the process results are considered in scope as these have stable and static characteristics. The workflow used to create the information is not in scope. The resulting information, e.g. change authorization document, approvals/signatures, CAD models, attribute data, are in scope.
Product management data closely reflects the local business and data handling processes of each company. Therefore, an open standard can define only a common generic subset of the overall requirements. Other data that are only of local relevance or dependent on the local application environment are defined by local procedures. For each application environment, the complete set of standards, methods, and procedures related to the archived product management data shall be defined and documented by open standards, industry standards, or company standards and procedures. It is strongly recommended to use open standards whenever possible to ease data exchange, sharing, archiving, and ability to audit.
Three main objectives for LTA&R of product management data are:
-   enable the proper retrieval of archived primary technical data when performing queries relative to product structure, relationships, effectivity, status, etc.;
-   preserving the links between primary technical data and the associated product management data;
-   providing all relevant properties of primary technical data as contained within the associated product management data.
2.2.1   Architecture Definition
The product management data and the primary technical data may be managed in different environments (e.g. a database system for the product management data and a file system for the primary technical data with a reference in the database to the unique identifier and location for the file). In many cases, the primary technical data are held by the primary generating systems (e.g. CAD, systems engineering tool set) attached to a PDM backbone architecture.
The relationship between product management data and primary technical data is typically established by referencing mechanisms. The referencing mechanisms and the systems managing them shall be taken into account when archiving.
This can be done by describing the complete architecture of systems involved in the management of the relevant information and by defining common system requirements and procedures, such as synchronization, applied quality level, security requirements, and auditing. The overall capability of the architecture requires all systems within the architecture to comply with the common requirements.
The complete architecture definition shall comply with requirements defined in the applicable EN 9300 common process parts.
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