What company standrards checking proceedure do the drawings at your work go through?Does each individual check their own,or does the CAD manager also check every drawing that goes out?Batch standards checker?Custom programs that set standards
Here and in another company I worked for before I started my own we had a simple and accurate checking procedure which is probably a bit detailed for some disciplines but the basics could be used in the same way. We use this method for checking structural steel detail (workshop) drawings.
1. Drawing (or set of drawings) ready and issued for checking, drawing comes with A3 copies of all reference drawings which are marked as such and given to another person for checking. These ref. drawings would have relevant details highlighted with a pink highlighter to aid the checker to locate info. When drafting we try to include as many 'relevant' reference dimensions that are exactly the same as on the ref. drawings, these are quick to see and check against the reference drawings. Designing in round numbers (ie. 500 instead of 467) makes checking a lot easier, we also try to rationalise details as much as possible so we produce less drawings therefore less checking.
Ideally you would have a dedicated checker but that's not always possible.
2. The checker then checks
every item on the drawing for correctness, if it is correct it is marked with a yellow highlighter, if it is wrong it's marked in red and the correct value or a brief note to describe why or what is wrong. The drawing is also checked for general layout and drafting standards as well.
3. The checker returns the drawing to the drafter and the mark ups are discussed and agreed upon (or revoked if the drafter has good reason) and the drafter makes the changes required. The drafter marks off the fixed mark ups in orange to indicate they have been done. If the drafter has to change any of the yellow (correct items) they also mark them in orange to alert the checker of the change. This is very important!
4 The drafter re-issues a new copy of the drawing along with the previously marked up copy to the checker who then marks off the orange marks (on the original) in blue if correct. He may also see other changes that are required and mark up the drg again to be corrected and the process will loop again.
This system is very fast and accurate, the initial check may take the longest but drawings a very easy to check when they are correct
. The second check usually takes only minutes as the checker only has to check the previous red/orange mark ups as all the yellow markes were correct and don't require another look.