Configuration Control & Drawing Requirements

Document #:

LIGO-E030350-v5

Document type:

E - Engineering documents

Abstract:

Configuration Control & Drawing Requirements. The purpose of this document is to provide requirements on the format, distribution, control and archiving of LIGO drawings. The scope includes all drawings initiated by the LIGO Lab regardless of application (detector, civil construction, etc.) or discipline/type (mechanical, optical, vacuum and electronics).

In all cases an approved ECR ( ECR process M1200274 ) will result in changes in design/build documentation. The record of review and approval of these changes is handled by the DCN process which is defined in this document. All drawing changes including initial release require a DCN.

Examples of DCN's in use can be found all over the DCC. A grouping of some of these can be found here: https://dcc.ligo.org/wiki/index.php/Engineering_Workflow#Document_Change_Notification%2C_The_DCN

Please note if you are working on a draft DCN pull an E number on the DCC as you would normally do for a final DCN and include "[Draft DCN]" in the title, until you are ready to release revision to a final DCN. This will help us better identify duplicate and or work in progress documents that are appearing on the DCC. Drawings included in a procurement package without a DCN will be rejected.

Files in Document:

• E030350 Configuration Control and Drawing Requirements.pdf (file is not accessible)

Topics:

• System Engineering

Authors:

• Calum Torrie
• Jeffrey Kissel

Notes and Changes:

v5: updated abstract to include better definition and links to a groupings of DCN examples in use.

v5: Expansion on definition of electronic drawings supplied by J. Kissel.

v5: This document has been imported to google-docs and will be the source code for future versions:
https://docs.google.com/document/d/1ECfv-Ub8Wd0xwxJCzPaNqiuRpvEDxcR328wtOLLeCQM/edit?usp=sharing

v4: Updated (and refreshed) in Feb 2023 by Calum Torrie. The updated version includes links to the LIGO Business Office Procurement Best Practice pages on sharepoint as well as related documents that take the reader to important information on QA and Inventory Control as well as LIGO's Change Processes and Review Protocols. https://caltech.sharepoint.com/sites/LIGO/businessoffice/procurement/SitePages/Best-Practices.aspx

v3: Added a section on sheet metal drawing requirements.

Related Documents:

• LIGO-E000037: Detector Configuration Control Procedures

Referenced by:

• LIGO-E010613-v2: Generic Requirements & Standards for Detector Subsystems
• LIGO-E1300945: aLIGO, System Requirements
• LIGO-M960076-v5: LIGO Quality Assurance Plan
• LIGO-E1300959: aLIGO, Configuration Control