Design Drawing Document Control Manual
Design Drawing Document Control Manual
Design Drawing Document Control Manual
The definitions listed below serve as a guide and/or as a reference for users.
DRAWING - Foreign are used by JLAB however, originate from a source other
than JLAB.
DRAWING - Revision Level is the sequential capital letter, starting with the
alphabet "A", appearing in the revision block of a drawing indicating a change
to a previously issued drawing. Revision letters "I" and "O" should not be used.
This is to avoid confusion with the numbers "1" and "0". When all single
alphabets are exhausted, double letter should be used. The revision level is
then indicated by "AA", "BB", etc.
DRAWING - Void is a hard copy drawing that has been removed from the Master
Files. A new drawing revision level received by DCG will initiate this process.
Other terms that indicate a drawing as being voided are "canceled", "changed,
"obsolete", "revised", "replaced", "voided", "was", and/or requested by the
originator to discontinue storage.
Media Bond is the type of paper used to plot preliminary or check design
drawings.
Media Vellum is the type of paper used to plot final version design drawings for
long term storage.
DRAWING FORMAT GUIDELINES
These guidelines provide formal and standard methodology for generating and
processing design drawings. The procedures follow basic guidelines of DOD-
STD-100C; Engineering Drawing Practices and industry standard documentation
procedures. These procedures are intended to provide the guidelines for the
construction and operational phases of the JLAB project for the various
functional groups.
• artwork
• assembly
• block diagram
• detail
• drawing List
• fabrication
• fabrication & assembly
• installation
• layout
• schematic
• sub-assembly
• system diagram
• system print
• weldment
• wire diagram
Multi-Sheet drawing standards apply as follows:
• TITLE BLOCK - APPROVED or CONST REL indicates the person who will
be responsible for the commitment of JLAB funding to fabricate the
depicted parts. This block "must" be signed on the initial issue of a new
drawing. All revisions that follow require the electronic application of the
same signature name in this block.
• TITLE BLOCK - CADD I.D. NO. Indicates the complete file path location so
that retrieval of the drawing, other than the designer, can be
accomplished. Blanks, dashes, or N/A are "not" acceptable in this block.
• TITLE BLOCK - CHECKED indicates the person who has vigorously
reviewed the drawing for its technical content, adherence to JLAB
document standards, compliance with ANSI Y14.5M, and good drawing
practices. This block "must" be signed on initial issue of a drawing. The
person signing the checked block "should not" be the same person
indicated in the Drawn block. All revisions that follow require the
electronic application of the same signature name in this block.
• TITLE BLOCK - DATE indicates the date the approved block was signed.
This block "must" have the date indicated on the initial issue of a new
drawing. All revisions that follow require the electronic application of the
same date in this block.
• TITLE BLOCK - DIM & TOL PER ANSI Y14.5 represents the tolerance
required to fabricate the parts. If all tolerances are indicated in the
dimensions, enter a dash in this block. This applies to mechanical
drawings only.
• TITLE BLOCK - DRAWN indicates the designer, detailer, draftsperson, etc.
who produced the graphic representation of the parts and dates the entry.
This is to be filled in on the CADD system as printed text.
• TITLE BLOCK - DWG NO. Indicates the number assigned to a single
drawing that is unique to each Major System or Work Breakdown Structure
(WBS). Multiple drawing numbers are not acceptable on a single drawing
regardless of whether it is single sheet or multiple sheets.
• TITLE BLOCK - ENGINEER indicates person who will be responsible for
the technical content of a drawing. This block "must" be signed.
• TITLE BLOCK - FINISH indicates the specific surface finish required for
the parts. If the part's finishing requirements are individually indicated on
a drawing then a dash should be entered here. This applies to mechanical
drawings only.
• TITLE BLOCK - MATERIAL indicates the specific type of material required
to fabricate the parts. If a parts list is used on a drawing then a dash or
"see parts list" is to be entered. This applies to mechanical drawings only.
• TITLE BLOCK - REV. indicates the revision level of the drawing to
represent its most current status. A dash should be entered in this block
for the initial issue of a new drawing. Subsequent revised issues are
indicated by capital alphabets starting with "A", "B", etc. and should be
sequential. Revision letters "I" and "O" should not be used. This is to
avoid confusion with the numbers "1" and "0". When all single alphabets
are exhausted, double letter should be used. The revision level is then
indicated by "AA", "BB", etc.
• TITLE BLOCK - SCALE indicates the scale used to depict the parts shown
on the drawing. A dash is to be entered if the scale is indicated with the
parts to be fabricated.
• TITLE BLOCK - SHEET _ OF _ indicates the first sheet of a multiple
drawing set and the total number of sheets in the set. Subsequent sheets
indicate the sheet number and the total number in the set. If a drawing has
only one sheet, sheet 1 of 1 should be entered. "No" blanks or dashes are
acceptable in this block.
• TITLE BLOCK - USED ON ASSY NO. Indicates any associated assembly
drawing number which provides information in understanding the depicted
parts. If no assembly is applicable a dash is to be entered.
REVISION AREA is located at the upper right corner of all mechanical drawings.
Any changes which result in the advancement of the revision level of a drawing
are recorded here. For electrical drawings, this is included as part of the title
block. The various blocks are filled out as follows:
ECO FORM - General Revision indicates changes that are extensive. "General
revision to drawing, extensive changes" can be annotated on the ECO. A mark-
up of the drawing must accompany the ECO if a general note is used.
ECO FORM -Mark-Up is a copy of the areas of the drawing to be changed. This
should accompany the ECO form to ensure that changes are clear to anyone
unfamiliar with the components. Deletions should be indicated with a "red"
pencil, additions should be indicated with a "green" pencil, and comments to the
CADD designer should be indicated with a "black" pencil. This is to eliminate
any confusion on the designer's part as to what the originator wants.
ECO FORM initiates the revision process of an existing master drawing. The
purpose of this form is to legitimize, record, and manage the flow of changes to
a master drawing to insure archive of the most current documents. ECO
Continuation sheet is used when more space is required to describe the
change. Blocks to be filled out as follows:
JLAB drawings are approved and ready for release when all procedures are
implemented and appropriate signatures are entered in the title block area
and/or revision area. DCG's master drawing turn-in process takes place once a
drawing has been received and approved by DCG. The latest revision level of a
drawing is stored in the Master Storage area located in ARC 213.
DRAWING - Approval
Stamping a copied drawing indicates its intended use. Available stamps (black
ink) are the following:
The purpose of microfiche new and revised drawings is for the long term
protection against loss or damage to any design related to JLAB. Each drawing
will have three microfiche aperture cards made. One microfiche user set is
located in DCG, ARC 225. . One microfiche master set is filed in a fireproof
vault at a remote location. The process is as follows:
• microfiche standard Mil-M-9868 requires silver master fire proof vault set
• microfiche standard Mil-C-9949 requires 2 copied diazo sets
• DCG will make a copy of all received drawings for microfiche purposes
• DCG will proof the dwg copy clarity prior to being sent out for vendor
services
• DCG will create a bi-weekly microfiche log for record integrity purposes
• DCG will visually review received microfiche aperture cards for quality &
clarity
• DCG will use the microfiche log to verify card's label accuracy
• DCG will file all sets of microfiche cards bi-weekly
• DCG will stamp "void" on a voided drawing's microfiche card
• customer user set microfiche cards are filed in the "current" microfiche
cabinet section
• customer user set voided microfiche cards are filed in the "historical"
microfiche cabinet section
• anyone may view or print current or historical microfiche cards
• drawing microfiche card process requires a 4 week turn-a-round period
• DCG will place the proposed standard into the appropriate format
• DCG will submit a draft copy to all Group Leaders
• group leaders should forward comments, if any to DCG within two weeks
• MEG/DCG will evaluate the proposed standard
• MEG/DCG will then approve/disapprove the proposed standard
• DCG will then issue the approved standards
• disapproved proposed standard will be accompanied by a written
explanation
• disapproved proposed standard may then be resubmitted
• resubmitted proposed standard should be accompanied by justification
• resubmitted proposed standard should repeat the above process
• exceptions requiring a change from a DDDCM stated procedure should go
through MEG