Requirement Specification Template Drawing Numbering System (DNS)
TemplatesWhat is a Drawing Numbering System? A Drawing Numbering System (DNS) is a mandatory set of rules for naming and identifying technical documents and components within a company. It ensures that every part remains uniquely identifiable throughout its entire product lifecycle and serves as the interface between CAD design, ERP systems, and manufacturing.
Why use this template?
Manually defining a numbering system is prone to errors. This template provides an atomized list of requirements that takes proven industry standards (such as ISO 7200) into account. It covers critical aspects such as:
- Avoiding duplicates through clear logic.
- Process reliability by separating component and drawing revisions.
- Efficiency by considering human readability (chunking).
Overview of the Requirement Structure
Below is the live preview of the atomized requirements for a modern DNS. The structure is divided into classification, revision management, logistics, and IT specifications.
| Structure element | Requirement | Description | Tags |
|---|---|---|---|
1 Classification & Logic | Identification of Manufacturing Type | The drawing number must contain a feature that allows differentiation between assembly, welded assembly, and single part. | Standardization |
1 Classification & Logic | Assembly Affiliation | The drawing number of newly designed parts must contain the identifier of the directly superior assembly. | Standardization |
1 Classification & Logic | Common Part Integrity | Common parts (carry-over parts) must retain their original identification number even when used in new assemblies or projects. | Standardization |
2 Revision Management | Functional Component Revision | The system must provide a revision level for changes affecting geometry, material, or function (Form-Fit-Function). | Quality |
2 Revision Management | Editorial Drawing Revision | The system must allow a separate revision level for purely documentary or editorial changes without impact on the physical component. | Quality |
3 Logistics & Procurement | Purchased Part Identification | Purchased components must be identifiable as such through a specific segment in the drawing number. | Procurement |
4 IT & CAD Compliance | Segmentation via Delimiters | The drawing number must be divided into logical data blocks using visual delimiters (e.g., hyphens). | Usability |
4 IT & CAD Compliance | Limitation of Numerical Chains | Within the drawing number, a maximum of 5 numerical characters may follow each other without a delimiter. | Usability |
4 IT & CAD Compliance | Maximum Total Length | The total length of the drawing number, including all special characters and delimiters, must not exceed 40 characters. | IT-Spec |
Key Concepts of this Template
Atomization of Requirements
Every aspect (e.g., maximum length or the use of delimiters) is created as an individual requirement. This allows you to make specific decisions on individual points in your project without calling the entire system into question.
Revision Separation Logic
Special attention is paid to the distinction between functional revision (change to the physical part) and editorial revision (correction of a typo on the drawing). This prevents unnecessary change loops in production.
How to use this template in the ETRM system
To define these requirements for your own company:
- Log in to your ETRM account.
- Create a new project (e.g., "Implementation DNS 2024").
- Import the Drawing Numbering System template.
- Use the comment function to coordinate details (e.g., exact delimiters) with IT and manufacturing.