Colour used for hand marked updates to engineering drawings
Colour used for hand marked updates to engineering drawings
(OP)
What colours are typically used for checking and updating process drawings? What about other engineering disciplines, eg civil drawings?
Typically companies I've worked with use red for additions, green for deletions and blue or black for comments (that are not CADDED). This is for hand markups to the Master drawings, before they are sent to CAD. (Whereas squad check markups may be made with a variety of colours or systems that differ from company to company.) Is this red/green/blue colour system industry-wide, or just the companies I've worked for? I'm interested in North America mostly, but would also like to know if there is a generally accepted colour coding convention used worldwide. And is this consistent between engineering disciplines?
Typically companies I've worked with use red for additions, green for deletions and blue or black for comments (that are not CADDED). This is for hand markups to the Master drawings, before they are sent to CAD. (Whereas squad check markups may be made with a variety of colours or systems that differ from company to company.) Is this red/green/blue colour system industry-wide, or just the companies I've worked for? I'm interested in North America mostly, but would also like to know if there is a generally accepted colour coding convention used worldwide. And is this consistent between engineering disciplines?





RE: Colour used for hand marked updates to engineering drawings
RE: Colour used for hand marked updates to engineering drawings
RE: Colour used for hand marked updates to engineering drawings
RED - demolition
BLUE - construction
GREEN - comments (for clarification purposes only)
The companies were outside of US.
Dejan IVANOVIC
Process Engineer, MSChE
RE: Colour used for hand marked updates to engineering drawings
RE: Colour used for hand marked updates to engineering drawings
CR
"As iron sharpens iron, so one person sharpens another." [Proverbs 27:17, NIV]
RE: Colour used for hand marked updates to engineering drawings
RE: Colour used for hand marked updates to engineering drawings
CAD for process drawings:
Additions : Red
Deletions : Blue
Comments / directions to CAD : Green
Notes by engineer ( to be ignored by CAD ) : Pencil
Modifications to CAD process drawings to be only via Controlled Process Master markup
RE: Colour used for hand marked updates to engineering drawings
RE: Colour used for hand marked updates to engineering drawings
Yellow is transparent in copies.
Other disciplines (Instruments and Piping) added other red comments on the Process Master.
In case of massive modifications required, the Process Masters were copied before implementing other comments.
This master passed to the Project Engineer for the final comments (red or blue to override) and finally to the Draftmen.
In case of short time available, parallel Master Copies were created and commented by each Discipline (Process, Instruments and Piping) and then passed to the Project Engineer.
RE: Colour used for hand marked updates to engineering drawings
Generally following colours are used:
1. Red Pen/Pencil: For Comments
2. Blue Pen/Pencil: For Deleting
3. Green Pen/Pencil: For Suggestions
4. Orange Highlighter: For Self Check
5. Yellow Highlighter: For Desipline Check
Dinesh S SHELATKAR.
Process Engineer
RE: Colour used for hand marked updates to engineering drawings
http://pipingdesigners.com/contents/tips-tools-tra...
Sometimes its possible to do all the right things and still get bad results
RE: Colour used for hand marked updates to engineering drawings
http://pipingdesigners.com/contents/tips-tools-tra...
Sometimes its possible to do all the right things and still get bad results