SATPC0031546 Tab 04 Drawing Manual.pdf

Johnson Space Center Procedural Requirements

JPR No.: 8500.4K Effective Date: 03/06/2006

Expiration Date: 11/12/2026

Verify correct version before use at: https://cdms.nasa.gov/ JSC Form JF2420B (Revised January 21, 2020) (MS Word August 28, 2006)

Verify correct version before use

Compliance is Mandatory

ENGINEERING DRAWING SYSTEM MANUAL

Revalidation, November 2021

Responsible Office: Engineering Directorate

Engineering Drawing System Manual

JPR No. 8500.4K

Page Number Page 2 of 116

TABLE OF CONTENTS

P.1 PURPOSE

P.2 APPLICABILITY

P.3 AUTHORITY

P.4 APPLICABLE DOCUMENTS AND FORMS

P.4 MEASUREMENT/VERIFICATION

P.5 CANCELLATION

CHAPTER 1 ADMINISTRATIVE PROCEDURES

1.1 POLICY

1.2 APPLICABILITY

1.3 RESPONSIBILITIES

1.4 CONTRACTOR COMPLIANCE

1.4.1 Contractor Releasing to EDRS/EDCC with Approved OPR

1.4.2 Contractor Delivering to DDMS

1.5 IMPLEMENTATION

1.5.1 Compliance

1.5.2 Paper Drawings

1.6 DDMS, EDCC, AND EDRS

1.7 REFERENCED DOCUMENTS

2.0 CHAPTER 2 JSC ENGINEERING DRAWING REQUIREMENTS

2.1 BASIC REQUIREMENTS

2.1.1 Purpose of Drawings

2.1.2 Legibility

2.1.3 General Drawing Practice

2.2 SIZE AND FORMAT

2.2.1 Drawing Sizes

2.2.2 Basic Sheet Format

2.2.3 Title Block

2.2.4 Parts List

2.2.5 Drawing Titles

2.2.6 Drawing Notes

2.3 NUMBERING OF DRAWINGS AND PARTS

2.3.1 NASA Center Designation

2.3.2 Types of Engineering Drawings

2.3.3 Program Letter

2.3.4 Equipment Type

2.3.5 Drawing Sequence Numbers

2.3.6 Part-Numbering Format

2.3.7 Assignment of Dash Numbers

2.4 CONFIGURATION CONTROL OF PART NUMBERS

3.0 CHAPTER 3 DRAWING CONTROL SYSTEM

Page Number Page 3 of 116

3.1 NUMBERING JSC DRAWINGS AND PARTS

3.1.1 Drawing Number Assignment

3.1.2 Lot and Serial Number Assignment

3.2 DRAWING REVIEW, APPROVAL, AND ARCHIVING

3.2.1 Engineering Drawing Review

3.2.2 Approval Requirements on Engineering Drawings

3.2.3 Approval Verification

3.2.4 Fabrication Approval of Drawings

3.2.5 Final Approval of Drawings

3.2.6 Validation

3.2.7 Archiving

3.2.8 Distribution

3.3 DRAWING REVISIONS AND CHANGE NOTICES

3.3.1 Revision of Drawings

3.3.2 Drawing Change Notices

3.3.3 Redline Changes to Final and Fabrication Approval Drawings

3.3.4 Drawing Cancellation Procedure

3.4 SECURITY CLASSIFICATION

3.4.1 Procedures for Classified Drawings

3.4.2 Markings for Classified Drawings

3.4.3 Safeguarding of Classified Drawings

3.5 GOVERNMENT DRAWINGS FURNISHED TO A CONTRACTOR

3.5.1 Drawing Transfer Authority

3.5.2 Transfer CR Approval

3.5.3 Transferred Drawing Release

3.5.4 Drawing Transfer Contract Requirements

3.5.5 Return of Transferred Drawings to JSC

3.6 RETIREMENT OF JSC ENGINEERING DRAWINGS

3.6.1 Policy

3.6.2 Procedures

3.6.3 Retrieval of Retired Drawings

3.6.4 Retirement Records

4.0 CHAPTER 4 CAD FILE CONTROL

4.1 DEFINITION AND OBJECTIVE

4.2 CAD CONFIGURATION CONTROL SOFTWARE

4.3 CAD FILE NAMING CONVENTIONS

4.3.1 Tabulated Part Naming Conventions

4.3.2 CAD File Naming Examples

4.4 CAD FILE SUBMISSION, ATTRIBUTE PROMOTION, ARCHIVING, AND

DISTRIBUTION

4.4.1 CAD File Submission

4.4.2 CAD File Revision Attribute

4.4.3 CAD File Release Level Attribute

4.4.4 Model Distribution

5.0 CHAPTER 5 RECORDS

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APPENDIX A. DEFINITIONS OF HARDWARE DRAWING TYPES

APPENDIX B. ACRONYMS

APPENDIX C. JSC STANDARD DRAWING FORMATS AND FORMS

APPENDIX D. PARTS LIST ENTRY REQUIREMENTS

TABLE 1-1 REFERENCES FOR STANDARD SYMBOLS

TABLE 2-1 JSC STANDARD DRAWING SIZES (ENGLISH)

TABLE 2-2 CODES FOR EQUIPMENT TYPE

TABLE 2-3 NASA PROGRAM DESIGNATOR

TABLE 2-4 ENGINEERING DRAWING TYPE

TABLE 2-5 SUPERSEDED AND CANCELLED TABLE

TABLE 3-1 TRACE CODE IMPLEMENTATION FOR ASSEMBLY DRAWINGS . 52

TABLE 3-2 APPROVAL REQUIRED FOR ENGINEERING DRAWINGS

FIGURE 2-1 FORMAT NUMBER COMPONENTS

FIGURE 2-2 FORMAT OF THE TITLE BLOCKS

FIGURE 2-3 SPECIFICATION OF FLAG NOTES

FIGURE 2-4 JSC DRAWING AND PART NUMBER FORMAT

FIGURE 3-1 SERIAL NUMBER ASSIGNMENT

FIGURE 3-2 LOT NUMBER ASSIGNMENT

FIGURE 3-3 SERIALIZED LOT NUMBER ASSIGNMENT

FIGURE 3-4 JSC DRAWING APPROVAL PROCESS

FIGURE 3-5 REVISION HISTORY BLOCK

FIGURE 3-6 FAB TO FINAL REVISION HISTORY BLOCK WITH NO CHANGES 67

FIGURE 3-7 FAB TO FINAL REVISION HISTORY BLOCK WITH CHANGES

FIGURE 3-8 DCN INFO FORMAT

FIGURE 4-1 JSC CAD FILE WORKFLOW

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Change Record Log Revision Date Originator Description of Changes

Baseline June 1964 Initial Release of original version A February 1987 Scope change to include flight hardware

B February 1991 Updated guidelines for compliance with Mil-Std-100

C August 1997 Major revision introducing Fabrication Approval, redline procedures, and electronic drawing control

D May 1998 New Section 1.4 describes implementation policy Modify 2.2.7 to reference PRC process specifications Modify 2.2.7b2 to specify instructions for MIP notes Add instructions to 2.3 for changing DCN numbers Modify 3.2.6c to require vendor next assy number Strike 3.2.7 e, f, i, & k regarding the EDCC database Strike last sentence in 3.3.1 regarding bookform dwgs Strike last paragraph in 3.3.4 on drawing cancellation Modify 3.6.2 to reflect electronic procedures

E February 2000 2.1.5 Reworded geometric dimensioning requirement and added specification on the use of English units 2.2.7a3 Relaxed restrictions on the depictions of flag notes 2.2.7b5 Added instructions for property tag note

Page Number Page 6 of 116

2.3.2i Drawing trees now treated as diagram drawings

2.3.2.7.1 Added instructions to document

temporary configurations

3.1.1 Revised procedure for obtaining drawing

numbers

3.2.1 Added signature authority guidance

3.2.2 Table 5 New stress signature

exceptions

3.2.3 Requires use of Form 1237 for

Approvers only

3.2.6 EDCC validation modified consistent

with automated release 3.3.3b Deleted since EDCC does not record redlines

3.3 Option for attaching revision index sheet to

book form drawings eliminated since it cannot be accommodated App A Eliminated reservation of notes area in A-3 and A-4 App C Deleted – EDRS user guide is now online

F May 2000 3.2.2 Table 5: Added cable sub assembly drawings as an exception for stress signature

G August 2001 Revised and rewritten, Major changes include:

1.5 Added to and updated Applicable

Documents, combined with Referenced Documents

2.1.31 Identified Projection System

Requirements

2.2 Added Format Number to Title Block to

identify software, date, and revision of format Fig. 2 Updated Title Block to identify use of inches, CAGE Code, and FMT

2.2.4 Added capability to use separate parts

lists

Page Number Page 7 of 116

2.3.24 Clarified detail drawing types and uses.

2.3.2.12.2 Clarified vendors name may only

be included as suggested source

2.3.2.12.3 Clarified approvals for interface

control drawings.

3.1.2.2 Serial No. assignment for re-fabricated

parts with unknown or questionable history begins at 4001. WAS: 5001 3.2.1c Added options for entering Checker name Table 4 Updated Approval Signature Required for Engineering Drawings

3.2.4 Clarified Fabrication Approval Drawing

procedures

3.2.6 Revised EDCC validation procedures

3.3.1 Clarified options for promoting from FAB

Approval to Final Approval

3.3.2 Revised Drawing Change Notice

Procedures

3.3.3 Revised Redline Procedures

Section 4 Moved Appendix C, Model Control, to create Section 4

H March 2004 2.3.2 Clarified second letter designator are guidelines and not cause for rejection of the drawing.

2.3.2.4.2b Clarified requirements for matched parts drawing.

2.3.4. Added new equipment code for Bio-

Medical equipment type.

2.3.72.3.7.0. & 2.3.7.0 Clarified general assignment of dash numbers and mirror image parts

2.3.72.3.7.1.2 & 2.3 Clarified use of -3XX and -7XX series

2.4.1 Added clarification that EA-WI-027 is the

governing document for configuration management requirements for EA engineering

Page Number Page 8 of 116 projects and removed duplicate wording between JPG 8500.4 and EA-WI-027.

3.1 Added lot numbers to numbers controlled

by the EDCC.

3.1.2 Revised section and sub-sections to

clarify lot and serial number assignment.

Added Figure 6 and Figure 7.

3.2.1 Clarified names and dates for in the title

block indicate the person responsible for that specific revision of the drawing. Added further clarification for each role in sub-sections.

3.2.2 Clarified Table 3.2 1 indicates minimum

approvals required. Added NOTE: If materials certification of components on drawings is required the project shall establish a policy for additional signatures such as materials, stress, or QE.

Table 3.2 1 Updated types of drawings and required signatures. Added division level authorization requirement for changing OPR of drawing.

3.2.6 Added authorization for EDCC to hold

drawings for errors that prevent entry into the

DDMS.

3.3.2 Block K was added. Dates shall be

entered as M/D/YY or MM/DD/YY.

4. Revised and Invoked Model Control Section.

Appendix B – Revised to examples and table to reflect new parts lists requirements.

J February 2005 Converted document from JSC Policy Guideline (JPG) to JSC Procedural Requirements (JPR). JPR 8500.4 supersedes JPG 8500.4.

K Note: Document skips Rev “I” per center document revision standard.

K

PCN-1

January 2010 1.7 Added reference to NPR 1600.1, NASA Security Program Procedural Requirements Table 2.1-1 Updated reference for Mathematical Signs and Symbols

Page Number Page 9 of 116

2.2 Added Altium CAD reference

2.3.4.2.3 Corrected reference

2.3.7.5 and 2.3.7.6 Editorial changes

3.1.2.2 Added trace code LL for assembly

drawings

K Revalidation

April

Dale Huls Reformat of JPR 8500.4K to conform to current JPR template including numbering of paragraphs and breaking requirements statements into separate numbered paragraphs.

K PCN 002 June 2015 Dale Huls Table 2-3 NASA Program Designator:

added Orion Program to row H

K PCN 003 September

Dale Huls Appendix C: Add definition for Flight Experiment (Class 1-E) and GSE (Class 1-E).

Add line in Section 2.3.4.1.1: “Flight Class I-E products shall use an Equipment Code Type of 39”.

Modify Section 2.3.4.1.2: “For Ground Support Equipment (GSE), the originating organization shall use Code 38 or, if applicable, Code 34 for Recovery Support Equipment. GSE Class I-E products use an Equipment Code Type of 36”.

Update Table 3-2: Add new line – Drawing type: Flight Experiment (Class I-E), ENG (Engineering) X (Single approver) and APP (Approver) X (Eng or APP as single approver) Update Table 3-2: Add new line – Drawing Type: GSE (Class I-E), ENG (Engineering) X (Single approver) and APP (Approver) X (Eng or APP as single approver

K Revalidation

June 2016 Dale Huls Reformat of JPR 8500.4K to conform to current JPR template including numbering of paragraphs and breaking requirements statements into separate numbered paragraphs.

K September

The Human Systems Engineering & Development Division (SF) is seeking a

Page Number Page 10 of 116

Admin Change 1 change to allow the use of equipment code 46 (Life Science Experiments) from Class IE hardware instead of equipment code 39 (Experimental Equipment (Flight)). EA54 has previously approved 3 waivers allowing this departure from the existing requirements and have no objections to changing requirement 2.3.4.1.1 to allow the use of equipment code 46 for Class IE flight hardware.

K Revalidation

November

Richard Lee Revalidation, update references and applicable documents list

All previous versions of the Engineering Drawing System Manual may be found in the Design and Data Management System. Search DDMS for the number, 8500.4, and the version of the document

Page Number Page 11 of 116

PREFACE

P.1 PURPOSE

The purpose of this document is to establish the Johnson Space Center (JSC) Engineering Drawing System Requirements (JPR 8500.4) as the official medium for establishing the procedures to follow when preparing, releasing, maintaining, and controlling engineering drawings and their associated files. This document is intended to ensure a standard drawing format and to ensure that changes to released drawings are documented and approved.

P.2 APPLICABILITY

a. This JSC Procedural Requirements (JPR) is applicable to all JSC NASA organizations, including Ellington Field, and the Sonny Carter Training Facility, except for the following:

(1) White Sands Test Facility,

(2) Office of Inspector General.

b. JSC directives may apply to contractors or grant recipients only to the extent specified or referenced in the appropriate contracts, grants, or agreements.

c. In this directive, all mandatory actions (i.e., requirements) are denoted by statements containing the term “shall.” The terms: “may” or “can” denote discretionary privilege or permission, “should” denotes a good practice and is recommended, but not required, “will” denotes expected outcome, and “are/is” denotes descriptive material.

d. All document citations are assumed to be the latest version unless otherwise noted.

P.3 AUTHORITY

a. NPR 7123.1 NASA Systems Engineering Processes and Requirements

b. JPD 8500.2 JSC Engineering Drawing System

P.4 APPLICABLE DOCUMENTS AND FORMS

Ref. Document No. Title

a. Title 36 of the Code of Federal Regulations, Chapter XII, Part

Electronic Records Management

b. DFARS 204.7302 Defense Federal Acquisition Regulation Supplement subpart 204.7302

c. NPR 1600.1 NASA Security Program Procedural Requirements

Page Number Page 12 of 116

Ref. Document No. Title

d. NPR 4200.1 NASA Equipment Management Manual

e. NRRS 1441.1 NASA Records Retention Schedules

f. JPD 8500.3 Serial and Lot Numbers for Certain Items of

Government Furnished Equipment

g. ANSI/AWS-A2.4 Standard Symbols for welding, brazing, and

Nondestructive Examination

h. ANSI/IEEE STD 260.3 Mathematical Signs and Symbols for Use in Physical

Sciences and Technology

i. ASME B46.1 Surface Texture (Surface Roughness, Waviness and

Lay)

j. ASME Y14.1 Decimal Inch Drawing Sheet Size and Format

k. ASME Y14.100 Engineering Drawing Practices

l. ASME Y14.24 Types and Applications of Engineering Drawings

m. ASME Y14.2M Line Conventions and Lettering

n. ASME Y14.3 Multi-view and Sectional Drawings

o. ASME Y14.5M-1994 Dimensioning and Tolerancing

p. IEEE-STD-315-1975 IEEE Graphic Symbols for Electrical and Electronic

Diagrams (Including Reference Designation Letters) Bound with 315A-1986 (R1993) Supplement to

IEEE-STD-315-1986

q. ISO 5457 Technical Product Documentation – Sizes and Layout of Drawing Sheets

r. MIL-STD-17 Mechanical Symbols for Aeronautical, Aerospacecraft, and Spacecraft Use

s. NASA/JSC PRC-9002 Process Specification for Part Marking

t. JSC 61231 Engineering Drawing Requirements for Composite

Structures

u. SKZ36103755 JSC Fabrication Tolerances and Practices

P.4 MEASUREMENT/VERIFICATION

Compliance with this JPR is a distributive function managed on a drawing specific case-by-case review via the Electronic Drawing Release System and the various project management milestone reviews. There is no overall performance/ verification metric required for this JPR.

P.5 CANCELLATION

Issuance of this JPR cancels JPR 8500.4J, Engineering Drawing System Manual.

Page Number Page 13 of 116

Original Signed By:

Julie Kramer-White Director, Engineering

Distribution:

JDMS

Page Number Page 14 of 116

CHAPTER 1 ADMINISTRATIVE PROCEDURES

1.1 POLICY

The Engineering Drawing System Manual establishes the procedures to follow when preparing, releasing, maintaining, and controlling engineering drawings and associated files. These procedures are intended to ensure a standard drawing format and to ensure that changes to released drawings are documented and approved. The following definitions differentiate between requirements and other statements.

a. Shall: This verb is used for stating binding requirements.

b. Should: This verb is used for stating non-mandatory goals.

c. Will: This verb is used for stating facts or declaration of purpose.

1.2 APPLICABILITY

a. The JSC Policy Directive JPD 8500.2 defines applicability of this document.

b. All JSC numbered drawings (See Section 2.3) shall be released through the Engineering Drawing Control Center (EDCC).

1.3 RESPONSIBILITIES

The JSC Policy Directive JPD 8500.2 defines responsibilities.

1.4 CONTRACTOR COMPLIANCE

1.4.1 Contractor Releasing to EDRS/EDCC with Approved OPR

This section outlines requirements for contractor compliance if the contractor releases JSC drawings with JSC numbers through the EDRS/EDCC.

1.4.1.1 Contractor Level of Effort Tasks Releasing through EDCC/EDRS

For level of effort tasks, contractors shall use the JSC Commercial and Government Entity (CAGE) code.

1.4.1.2 Contractor Completion Form Task Releasing through EDCC/EDRS

a. For completion form tasks, contractors shall use their own CAGE codes on the drawings rather than the JSC CAGE code.

b. Contractors releasing drawings through the EDRS/EDCC shall adhere to the requirements as defined in JPR 8500.4.

c. To use a contractor CAGE code, the Contracting Officer’s Technical Representative (COTR) of that contract shall provide a written request to the EDCC listing the following:

(1) Contractor name

(2) CAGE Code

Page Number Page 15 of 116

(3) List of contractor personnel authorized to sign the JSC Form (JF1237) requests for that Contractor. Refer to Section 3.2.3.

d. The EDCC shall assign an OPR code to that contractor for issuing EDCC drawing numbers, and EDRS drawing approval authority.

e. EDCC shall maintain a list of all approved contractor Office of Primary Resonsibility (OPR) codes.

1.4.2 Contractor Delivering to DDMS

This section outlines requirements for contractor compliance if the Government Furnished Equipment (GFE) drawings and associated files are delivered to the Design and Data Management System (DDMS) rather than released through the EDRS/EDCC.1.4.2.1 Contractor Configuration Management

(CM).

1.4.2.1 Contractor Configuration Management

a. Prior to delivery, the contractor shall maintain revision and release configuration control of his or her drawings and associated files.

b. The contractor internal engineering drawing practice standard shall be consistent with a NASA/JSC accepted standard such as ASME Y14.100.

c. Contractor’s drawing standard acceptance shall be delineated in the NASA contract or written NASA/Contractor agreement.

d. The Contractor drawing standard shall be made available upon request for NASA audit.

e. If an audit is requested, the Engineering Services and Management Integration Office from the Engineering Directorate shall perform the audit.

f. The contractor’s approval cycle shall include technical discipline review and approval that meets the intent of the drawing content reviews defined in Section 3.2 and Table 3-2.

g. The contractor is responsible for certifying internal technical reviewers.

1.4.2.2 Drawing and Part Numbers

a. The contractor shall not use JSC drawing or part numbers if the GFE drawings and associated files are delivered to the DDMS rather than released through the EDCC.

b. However, the contractor numbering scheme shall use dash numbers.

c. The contractor is not required to use the JSC dash numbering scheme. Refer to Section

2.3 for information on JSC Numbers.

1.4.2.3 Contractor Specifications and Processes

Restrictions (see Section 2.1.3.8) for material and process callouts also apply to drawings and associated files delivered to the DDMS rather than released through the EDRS/EDCC.

1.4.2.4 Drawing Delivery

Page Number Page 16 of 116

a. The contractor shall deliver all drawings, Separate Parts Lists (SPLs), and meta-data electronically in a format compatible with the DDMS.

b. Drawing delivery shall include any change notices or engineering orders which modify the drawing.

c. The meta-data encompasses attributes required to enter a record in the system. Address questions regarding format and required meta-data to the DDMS Engineering project manager.

1.4.2.5 Required Associated Files Delivery

a. For each drawing submitted, the contractor shall submit electronically all files in the native format required to open and modify the drawing in its native format.

b. The contractor shall not convert the associated files in any way from the native format.

In addition, any required associated documents for assembly and/or manufacture shall be delivered.

c. For example, an assembly drawing in Pro/Engineer requires the following file types.

(1) .drw This is the drawing file. However, it cannot be opened without the model and drawing format files

(2) .asm This is the assembly model. However it cannot be opened without all the part models

(3) .prt All the individual parts that make up the assembly.

(4) .frm This is the drawing format file or template required to open the drawing file.

Format delivery is not required if the JSC standard Pro/E template format is used.

d. Address questions regarding electronic delivery and formats to the DDMS Engineering project manager.

e. It is not a requirement to use the model naming convention outlined in Section 4.2.

f. However, if the JSC specified model naming convention is not used, the contractor shall provide information to interpret all associated file relationships to specific part and drawing numbers in order to facilitate use of the delivered native files.

1.4.2.6 DDMS Parts List Data Delivery

a. For each drawing submitted, the contractor shall deliver a SPL per the format defined in Section 2.2.4.4 to support automated procedures for entering part data into the DDMS database.

Note: The SPL contains all the data required to create product records and product structure. The contractor may, in addition to providing the SPL, also show a traditional parts list on the face of the drawing (integral parts list) if desired.

c. The integral and separate parts lists shall have identical information. DDMS will treat the SPL as the master to populate the DDMS.

1.4.2.6.1 Parts List Data Format

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a. For each drawing submitted, the contractor shall deliver data in a format compatible with data entry in DDMS. The data delivered will be used to create parts and indentured parts list in DDMS.

b. Contact the DDMS Engineering project manager for the data formats allowed.

1.4.2.6.2 Alternate Format for Parts List Data

a. If there is no DDMS compatible data entry format available, the contractor shall deliver a SPL format as defined in Section 2.2.4.4.

b. The contractor may, in addition to providing the SPL, also show a traditional parts list on the face of the drawing (integral parts list) provided that the requirements in Section 1.4.2.6 are met.

1.4.2.6.3 Parts List Data Master

The contractor provided data shall have identical information to the drawing parts list. DDMS will treat the contractor provided data file as the master to populate the DDMS.

1.4.2.7 Serial and/or Lot Number Records

a. If the contractor is manufacturing the hardware depicted on the drawings, a list of serial and/or lot numbers assigned for each part, if applicable, shall be provided.

b. The contractor is not required to use the JSC numbering and lettering scheme for serial and lot numbers. However, the contractor shall adhere to uniqueness requirements as outlined in Section 3.1.2.

c. Address questions regarding electronic delivery and format serial/lot number list to the DDMS Engineering project manager.

1.5 IMPLEMENTATION

1.5.1 Compliance

1.5.1.1 Contractors

a. For contractors with a specific revision of JPG 8500.4 or JPR 8500.4 invoked in an existing contract, that revision shall remain in effect until the contract is modified.

b. For contractors with “latest revision” of JPG 8500.4 or JPR 8500.4 invoked in an existing contract,

c. This revision L of JPR 8500.4 shall be in effect as of the date of its approval and

d. Drawing compliance shall be as of the date specified in Section 1.5.1.3 below.

e. For contractors with JPR 8500.4 invoked in new contracts:

(1) This revision L of JPR 8500.4 shall be in effect as of the date of its approval and

(2) Drawing compliance shall be as of the date specified in Section 1.5.1.3 below.

1.5.1.2 Civil Servants

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a. For civil servants, this Revision L of JPR 8500.4 shall be in effect as of the date of its approval and

b. For civil servants, drawing compliance shall be as of the date specified in Section 1.5.1.3 below.

1.5.1.3 Drawing Compliance Deadline

Drawings submitted to the EDCC or DDMS after the effective date for JPR 8500.4L shall be submitted in full compliance with all requirements of this Revision L of JPR 8500.4 unless exempted elsewhere in this document. For drawing compliance the previous Revision K of JPR 8500.4 is applicable until this date.

1.5.2 Paper Drawings

The EDCC shall not accept paper documents for JSC numbered drawings. If a JSC organization requires the archival of paper documents for non-JSC numbered drawings, the drawings may be scanned electronically and submitted to the DDMS. Refer to Section 2.3 for information on JSC numbers.

1.6 DDMS, EDCC, AND EDRS

References to the DDMS, the EDCC, and the EDRS are used throughout this document. The DDMS is an engineering environment comprised of multiple systems with the purpose of configuration managing and warehousing design data. In the context of this document, DDMS design data includes drawings, Computer Aided Design (CAD) models associated with drawings, part hierarchical relationships (parts list and next assemblies), as well as attributes such as drawing numbers, CAGE Codes, serial numbers, part names, drawing titles, etc.

a. In the context of this document, the EDCC refers to the following:

(1) The organization which performs duties associated with drawing control. Responsibilities of the EDCC organization are established in JPD 8500.2, JPD 8500.3, and JPR 8500.4.

(2) The database which stores drawings as well as attributes related to those drawings such as drawing number, revision, and serial numbers

(3) The Web site which allows users to access the database. The EDCC database and website are part of the DDMS environment.

b. In the context of this document, the EDRS refers to the system used for electronic drawing review and approval. Drawings approved through EDRS are released into the EDCC database. This document provides the functional requirements for the system. The EDRS is part of the DDMS environment.

1.7 REFERENCED DOCUMENTS

a. Adhere to the latest revisions of the following documents invoked as part of JPR 8500.4 when generating engineering drawings.

b. If an applicable or referenced document has been superseded, the superseding document shall take precedence.

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c. In case of conflict between JPR 8500.4 and an applicable document (other than Title 36 of the Code of Federal Regulations, Chapter XII, Part 1234), JPR 8500.4 shall take precedence.

d. In case of conflict between JPR 8500.4 and Title 36 of the Code of Federal Regulations, Chapter XII, Part 1234, Part 1234 shall take precedence.

e. Nationally recognized standards governing use of symbols on engineering drawings and associated lists are shown in Table 1-1.

Table 1-1 References for Standard Symbols Ref Discipline Standard Number Standard Title 1 Electrical and

Electronic

IEEE-STD-315-1975

IEEE Graphic Symbols for Electrical and Electronic Diagrams (Including Reference Designation Letters) Bound with 315A-1986 (R1993) Supplement to IEEE-STD-315-1986

2 Mechanical MIL-STD-17 Mechanical symbols for Aeronautical, Aerospace- craft and Spacecraft use.

3 Welding and

NDT

ANSI/AWS-A2.4 Standard Symbols for Welding, Brazing, and Nondestructive Examination

4 Mathematical ANSI/EEE Std 260.3 Mathematical Signs and Symbols for Use in Physical Sciences and Technology

5 Logic ANSI/IEEE-STD-91 IEEE Standard Graphic Symbols for Logic Functions

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2.0 CHAPTER 2 JSC ENGINEERING DRAWING REQUIREMENTS

2.1 BASIC REQUIREMENTS

2.1.1 Purpose of Drawings

The purpose of drawings is to convey sufficient engineering requirements, characteristics, and information to manufacture, install, or procure an item or to procure materials or services.

a. Ensure that drawings are complete for the purpose intended.

b. Provide drawings that are easily and completely understandable by craftsmen, production planners, buyers, and others who must use the drawing.

2.1.2 Legibility

a. Create line work that is sharply defined and of uniform density, with clear and adequately spaced lettering.

b. Produce line work and lettering that are opaque enough to be legible in full-size or reduced-size copies prepared by a generally accepted method of reproduction.

c. Find guidelines for line conventions and lettering in ASME Y14.2M.

2.1.3 General Drawing Practice

Prepare drawings in accordance with ASME Y14.100.

2.1.3.1 Projection System

a. ASME Y14.3M delineates projection system definitions.

(1) In general: use third-angle projection on JSC drawings.

(2) Use first-angle projection drawings only if they are identified as such and program approval has been established.

b. Establish projection system identification with text stating the type of system used, adjacent to a graphic symbol (per ASME Y14.3M), located near the title block.

c. Third-angle projection drawings need not be identified, although it is recommended that drawings to be viewed internationally should have the particular system identified.

2.1.3.2 Specification of General Fabrication Practices

It is recommended that drawings for fabrication specify, as a general note, SKZ36103755. This document defines numerous tolerances and shop practices to be used in lieu of explicit drawing callouts.

2.1.3.3 Dimensions and Tolerances

a. The design organization shall use dimensioning and tolerancing practices as specified in

ASME Y14.5M-1994.

b. The recommended best practice for dimensioning and tolerancing is to use geometric dimensioning and tolerancing where appropriate.

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c. Design organizations may also use general dimensioning practices as defined in ASME Y14.5M.

d. Drawing dimensions are in English units unless otherwise specified.

e. When applicable, use SI Units in accordance with IEEE/ASTM-SI-10.

2.1.3.4 Surface Texture, Roughness, Waviness, and Lay

Surface texture, roughness, waviness, and lay requirements shall be as specified in ASME B46.1.

2.1.3.5 Abbreviations

Use abbreviations that conform to those listed in ASME Y14.38. Nonstandard abbreviations are not allowed.

2.1.3.6 Standard Symbols

2.1.3.6.1 Standards

Nationally recognized standards governing use of symbols on engineering drawings and associated lists are shown in Table 1-1.

2.1.3.6.2 Symbols Not Covered by Standards

a. When symbolic representation is required for items not covered by the standards shown in Table 1-1, select symbols from standards issued by the American Standards Association or by national engineering societies.

b. Other symbols may be devised by the design activity. However, when using symbols that are not covered by standards, the design activity shall explain the meaning of each of these symbols by a general note on the drawing.

2.1.3.7 Drawing Guidelines for Composite Material

Produce drawings of composite laminate material in accordance with JSC 61231.

2.1.3.8 Materials and Processes

a. Manufacturing/assembly processes, commercial hardware, and standard hardware (e.g.

fasteners, etc.) called out on the drawings shall not be defined by contractor in-house specifications but rather by publicly available standards maintained by the military, government, or standards committee/institution (e.g. MS, NAS, SAE, ASTM, ASME, etc.).

b. When available, JSC standards and processes are preferred over all other processes.

c. The following exceptions are allowed only for standards and processes, not hardware (e.g.

fasteners, etc.):

(1) Specific processes which are proprietary that can only be performed by the contractor.

(2) A contractor non-proprietary standard or process may only be used with specific approval by the COTR. The full standard or process shall be delivered to DDMS and linked to the part in

DDMS.

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2.2 SIZE AND FORMAT

a. All JSC drawings shall conform to the sizes and formats defined in this document.

b. The EDCC shall make EDRS-compatible formats, with a seven-character-code format number, electronically available (Example: P01MAR01, Figure 2-1 below).

c. New drawings shall use the latest revision of the format within six months of the revision date of the format.

d. Revised drawings previously electronically released in EDRS/EDCC may use previous EDRS-compatible formats.

e. The first character is a one-letter abbreviation of the software used to create the format, as identified below. Contact the EDCC for additional abbreviations.

A AutoCAD

M MSWord

O Or CAD

P Pro/E

S SDRC I-DEAS (Master Series)

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T Altium

U Unigraphics

W Solidworks

Figure 2-1 Format Number Components

f. The second two characters are the numerical version of the format, starting with 01.

g. The next three characters are the three-letter abbreviation of the month the format was revised.

h. The final two characters designate the year the format was revised.

2.2.1 Drawing Sizes

a. For the English system, use finished sheet format sizes and the size-designating letters as shown in ASME Y14.1. The EDCC provides electronic standard formats described in Table 2- 1 below.

(1) Select sheet sizes to provide well-arranged drawings with adequate allowance for future revisions and added material at the discretion of the draftsman.

(2) Size A sheets are intended for use in parts lists, book-form, tabulated, or specification drawings; avoid their use for other purposes.

(3) Multi-sheet drawings in Sizes A, B, C, D, E, and F are permissible and should be used when practicable in preference to roll-size drawings; however, roll-size drawings (J size) may be used when necessary.

b. For the metric system, if the drawing is created using metric units, use the English drawing formats (due to a current system limitation with EDRS).

c. Drawing originators shall address the tolerance block and indicate use of metric units.

Table 2-1 JSC Standard Drawing Sizes (English)

Size Code Width x Length (in) See Example in Appendix A

A 11 x 8.5 A-1

A 8.5 x 11 A-2

B 11 x 17 A-3

C 17 x 22 A-3

D 22 x 34 A-4

E 34 x 44

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Size Code Width x Length (in) See Example in Appendix A

F 28 x 40

J 34 x AR -

2.2.2 Basic Sheet Format

a. For the English system, use the general format and arrangement of data on drawings as shown in Appendix C. The reserved areas illustrated are recommended allowances for future additions and revisions, and are neither mandatory nor intended to be restrictive.

b. For the metric system, adhere to International Standard ISO 5457 for the general arrangement of data on drawings.

2.2.3 Title Block

The basic drawing title block in the lower right-hand corner of each drawing is illustrated in Figure 2-2.

a. Include the continuation sheet title block on subsequent sheets of a multi-sheet drawing per Figure 2-2.

b. Find guidelines for lettering of title block entries in ASME Y14.2M.

c. Complete the title blocks as follows in Figure 2-2:

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First Page Title Block

Multi-sheet Title Block

Block A Reserved for the drawing title. The guide for drawing titles and other title block entries is

ASME Y14.100.

Block B Reserved for the project name.

Block C Reserved for the drawing number as specified in Restrictions defined in Section 2.1.3.8 for material and process callouts also apply to.

Block D Reserved for revision letter for Final Approval drawings or revision number for Fabrication Approval drawings.

(Important: Leave this block empty; the EDCC shall fill it out.)

Block E Designates how many sheets the drawing has (example: 1 of 1, 2 of 4).

Block F Reserved for the OPR code of record identified in the EDCC for the specified drawing number (example: ES or EC2).

Block G Indicates letter size of the drawing.

Block H Reserved to show scale of drawing and is to be designated by the fractional method as illustrated in ASME Y14.100.

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Block I Reserved for the commercial and government entity (CAGE) code identification number as specified in the Defense Logistics Information Service Web Site, http://www.dlis.dla.mil/cage_welcome.asp. The number to be used by all JSC civil servants is 21356. Refer to Section 1.4 for CAGE code to be used by contractors.

Block J Reserved for the official release stamp.

Block K Provides for identification of the drawing type. The drawing type is used to identify required approvals. Allowable values for the drawing type field are listed in Table 3-2.

For example, enter “Flight Schematics” in this block.

Block L Reserved for the date (see Section 3.2.1). Dates shall be entered as M/D/YY or MM/DD/YY (e.g., March 6, 2011 would be 3/6/11, or 03/06/11).

Block M Reserved for surface finish (see Section 2.1.3.4).

Block N Specifies JSC standard tolerances. These values shall not be changed. If the originating organization wishes to use different values, the design organization shall cross out the block and indicate the new tolerances for that drawing with another table or flag note.

Block O Designates blocks for: drafter, design engineer, checker, org. official’s approval, stress, quality engineering, materials & processes, & optional approving authority. Approvals always apply to the latest revision (see Section 3.2.1). The heading for these approvals may be labeled either SIGNATURES or APPROVALS.

Block P Reserved for drawing number of next higher assembly drawing. Use “N/A” if next higher assembly is not applicable. Multiple next assemblies shall be separated by commas. If multiple next assemblies will not fit in this block, indicate with a flag note or application block per ASME Y14.100. For application block, use “SEE APPLICATION BLOCK” in Block P. For non-JSC next higher assembly numbers, the vendor number shall be entered in the block and the vendor CAGE Code shall be called out using a flag note.

Additional information such as vendor name and address may be provided as a flag note. If the next assembly is a pick list, enter the document number of the pick list.

Block Q Available for additional information.

Block R Specifies the format identification number (see Section 2.2).

Figure 2-2 Format of the Title Blocks

2.2.4 Parts List

The following is a list of requirements and guidelines for parts list creation and entry.

a. Detail drawings (type “D”), Assembly drawings (type “E”), Installation drawings (type “G”) and Kit drawings (type “J”) shall have a parts list showing a complete list of components that go into the top level item being defined on the drawing.

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b. Specification control drawings and source control drawings (type “L”) shall have a parts list if multiple configurations are defined on the drawing.

c. All other drawing types may have a parts list but it is not required.

d. The parts list may be on the drawing (integral) or prepared as a separate parts list associated with the drawing.

e. Do not specify materials in the drawing notes unless they meet one of the exceptions noted in Section 2.2.4.1 below.

f. When a specification without a revision designation is referenced in the parts list, the latest revision of that specification shall apply. Note: An assembly, subassembly, or detailed part is simply referred to in this section as a “part.”

2.2.4.1 Parts List Entry Items

If possible, organize the parts list into subsets in the following order.

a. For integral parts lists, arrange subsets in order from the bottom to the top.

b. For separate parts lists, arrange subsets in order from top to bottom.

c. List each subset in alphanumeric ascending order from the bottom to the top on integral parts lists and from top to bottom on separate parts lists. Several spaces can be left between each subset if desired to allow for later additions. See examples in Appendix B.

d. JSC in-house parts

(1) Unit assemblies (i.e. -301, -302, -701, etc.)

(2) Detail parts (i.e. -001, 002, -003, etc.)

(3) JSC components (i.e. SDDXXXXXXXX-XXX, SEDXXXXXXXX-XXX, etc.)

e. Other NASA center parts or NASA contractor parts

f. Parts design controlled by publicly available standards maintained by the government, military, or standards committee/institution (e.g. AN, AS, MS, NAS, DIN, ISO, SAE, ASTM, ASME, etc.).

g. Parts design controlled by private vendors (e.g. commercial-off-the-shelf parts (COTS) Products, contractor designed parts).

h. Bulk materials

2.2.4.2 Parts Lists Entry Requirements

See detailed matrix in Appendix D. Cargo Configuration Control Drawing (CCCD) and Space Station Configuration Control Drawing (SSCCD) drawings are exempt from parts lists requirements.

2.2.4.3 Integral Parts List Columns

a. The mandatory columns for an integral parts list are as follows (located from left to right):

(1) Quantity required - labeled “QTY” or “-XXX” (dash number of the assembly)

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(2) CAGE Code – Note: This is the CAGE Code for the organization responsible for design of the part, not the manufacture of the part. Manufacturing CAGE codes will be tracked against “As Built” records not on drawings. See Appendix B for further clarification.

(3) Part number

(4) Description

(5) Material

(6) Specification – labeled “SPECIFICATION” or “SPEC”

(7) Fracture Critical – labeled “FRAC CRIT”

(8) Trace Code – labeled “TRACE CODE”

b. The following additional optional columns may be added to the parts list to the right of the “TRACE CODE” column:

(1) Locating zone – labeled “ZONE”

(2) Reference Designator – labeled “REF DES”

(3) Find (item) number – labeled “F/N” or “ITEM”

(4) Flag Notes – This column is used to list the numbers of the flag note(s) which indicate information specific to that item. Do not include the flag note symbol.

2.2.4.4 Additional Requirements for Separate Parts List

a. Separate parts lists will serve two purposes. First, it allows flexibility in creation of the parts list. Second, it allows the part data to be electronically captured by the DDMS and displayed as an indented parts list.

b. If the parts list is a separate file, insert “SEE SEPARATE PARTS LIST” above the title block of the associated engineering drawing in the location reserved for the parts list. For an approximate location of the standard parts list placement, see Appendix A.

c. The mandatory columns for the separate parts list are as follows (the listed order shall be displayed from left to right).

d. All columns listed shall remain on the parts list regardless of whether they are used.

e. For example, if the Zone column is not used, a blank Zone column shall remain in the spreadsheet as a placeholder. The column order is critical in order to load the information properly in the DDMS.

(1) ITEM

(2) Quantity required - labeled “QTY” or “-XXX” for multi-dash assemblies on the same parts list (dash number of the assembly). Drawings with multiple dash numbers may be depicted on a single sheet with multiple quantity columns or multiple sheets with one or more quantity columns.

See Appendix B for examples.

(3) CAGE CODE – Note: This is the CAGE Code for the organization responsible for design of the part, not the manufacturer of the part. Manufacturing CAGE codes will be tracked against “As Built” records not on drawings. See Appendix B for further clarification.

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(4) PART NUMBER

(5) DESCRIPTION

(6) MATERIAL

(7) SPECIFICATION

(8) FRAC CRIT

(9) TRACE CODE

(10) REF DES

(11) ZONE

(12) FLAG NOTES

2.2.4.4.1 Format Requirements

The format for a separate parts list is as follows (also see Appendix B):

a. The separate parts list is in landscape format. Get templates through the EDCC Web Page (http://edcc.jsc.nasa.gov/).

b. Users shall leave the header blank upon submission of the SPL to EDRS.

c. The following items shall be stamped on the header of the SPL by the EDRS:

(1) Company name centered in header (Use NATIONAL AERONAUTICS AND SPACE ADMINISTRATION, LYNDON B. JOHNSON SPACE CENTER for JSC users and contractors releasing to the EDCC).

(2) “Parts List” heading in upper left corner.

(3) Drawing number in upper left corner of header under “Parts List” heading.

(4) Drawing title in upper left corner of header under drawing number.

(5) Drawing revision designator and DCN sequence number.

(6) EDCC release stamp (FAB APP or FINAL APP).

(7) Drawing release date.

(8) Item entries as listed above.

d. The drawing submitter shall verify the sheet count is displayed correctly in the lower right corner of footer.

2.2.4.4.2 User Requirements for Releasing to the EDCC

a. Get templates through the EDCC web page (http://edcc.jsc.nasa.gov/ ).

b. The originating organization shall leave blank the 1.25” top margin on the parts list.

c. This area shall be stamped by the EDRS with the header information. Reference Appendix B.

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d. Submit the parts list electronically to the EDCC using the EDRS by creating a drawing review package with the drawing and its separate parts list. Contact the EDCC supervisor for submission instructions.

2.2.4.4.3 EDCC Requirements

a. Provide templates through the EDCC Web page.

b. Ensure that the released parts list is electronically available through the EDCC web page, as well as its associated engineering drawing.

2.2.4.5 Revisions to Separate Parts List

a. Separate parts lists may be modified by revising the drawing (see Section 3.3.1) or using a DCN (see Section 3.3.2). Separate parts list cannot be modified independent of the drawing.

b. Once a separate parts list has been submitted with a drawing, all future revisions of the drawing or DCNs submitted to EDRS shall include an updated separate parts list even if changes are required to the associated engineering drawing only.

c. A new updated separate parts list shall be submitted along with the revised drawing or DCN. EDCC will stamp the new SPL with the latest revision designator and Drawing Change Notice (DCN) count.

2.2.5 Drawing Titles

Create drawing titles that conform to the procedures for creating title block nomenclature entries for drawings and for parts detailed thereon as specified in ASME Y14.100.

2.2.6 Drawing Notes

a. Drawing notes are used to show requirements, provide supplemental information, avoid repetition of information, avoid congestion on the drawing field, and otherwise ensure completeness and clarity of the drawing.

b. In JSC drawings that reference specifications, reference approved specifications. When referencing specifications in notes, indicate the specification number. The complete specification title is optional. Assume the latest revision of a referenced specification unless noted otherwise. The specification revision letter is not required on the drawing. In process notes, reference NASA/JSC PRC specifications where available. Contact the Materials and Processes Branch Chief for exceptions.

2.2.6.1 Types of Notes

2.2.6.1.1 Local Notes

a. Local notes, which appear on the field of the drawing, apply to specific operations or instructions and are placed adjacent to the point where the operations are required.

b. Connect the callout to the point where the operations are required by a leader taken from either end of the top line of the note.

c. Minimize the use of local notes to prevent congestion in the drawing field.

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2.2.6.1.2 General Notes

a. General notes apply to the drawing as a whole. Number them consecutively, beginning with number one. Precede them with the statement: “NOTES: UNLESS OTHERWISE

SPECIFIED.”

b. General notes shall not require reference or callout elsewhere on the drawing.

c. General notes shall be located in the lower left corner of the drawing and in ascending order.

Figure 2-3 Specification of Flag Notes

2.2.6.1.3 Flag Notes

a. Place flag note symbols around note numbers that are shown in the field of the drawing.

Flag notes may be numbered separately from general notes or the flag symbols may be included in the general notes. In either case the notes shall be numbered consecutively.

b. The coding symbol consists of the note number, approximately one-eighth-inch high, placed in the center of a triangle that is proportional to text height. Place the symbol to the left of the first line of the note.

c. The apex of the triangle:

(1) Shall point either up or to the right, but

(2) Shall remain consistent throughout the drawing (Refer to Figure 2-3).

d. Also place the symbol at each location on the drawing to which the note applies.

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e. If flag notes are separate from general notes, place them to the right of or above the general notes in ascending order, and precede them by “FLAG NOTES.”

2.2.6.2 Special Cases of Local Notes, General Notes, and Flag Notes

2.2.6.2.1 Special Instructions

Originating organizations may delineate, on the face of the drawing, functional test requirements;

procedures for adjustment, servicing, or repair; instructions for special assembly, installation, or modification; and other types of instructions or procedures.

a. The originating organization shall place a descriptive title above or beneath each set of instructions as appropriate to distinguish it clearly from all other notes or instructions.

b. The notes or instructions may appear on the field of the drawing as required.

2.2.6.2.2 Mandatory Inspection Points

a. A Mandatory Inspection Point (MIP) is a dimension, feature, process, or other aspect of a part or assembly that requires Quality Assurance (QA) inspection or verification.

b. The MIP symbol (shown below) shall be placed on the drawing using the standard text size based on the drawing size (refer to Section 2.1.2).

c. The design organization shall place the MIP symbol in the vicinity of the dimension, feature or process to be inspected or verified, so long as there is no ambiguity as to which item is being MIP’ed.

d. To maintain consistency in the inspection process for the part or assembly, the design organization shall place the MIP on the original CAD drawing as opposed to placing the MIP on quality copies, as built records, etc.

e. The inclusion of a MIP on a drawing means that the dimension, feature, or process which is MIP’ed SHALL BE inspected or verified by Quality Assurance Representative (QAR). It does not, in any way, prohibit QAR verification of any other dimension, feature, or process called out on the drawing. Likewise, the absence of a MIP from a drawing does not prohibit QAR verification of any dimension, feature, or process called out on the drawing, nor does it imply that the part or assembly should not be verified as a normal course of the QAR verification processes.

f. MIPs applied to dimensions means those dimensions a QAR shall verify according to the drawing.

g.…