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Page Title:
Appendix A. Engineering Drawings Technical Content Requirements |
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|  MIL-D-18641F(SH)
APPENDIX A
ENGINEERING DRAWINGS TECHNICAL CONTENT REQUIREMENTS
10. SCOPE
10.1 Scope. This appendix covers the technical content that shall be included on drawings
when required by the contract or order. This appendix is mandatory only when data item
description DI-DRPR-80651 is cited on the DD Form 1423.
20. APPLICABLE DOCUMENTS
This section is not applicable to this appendix.
30. DRAWING CONTENTS
30.1 Drawing types. The following types of drawings are required:
a. Outline drawings. Outline drawings are external arrangement drawings that shall show
all necessary external views of the unit and shall include all external dimensions
required for reproduction on ship's machinery arrangement drawings, for guidance of
the shipyard in designing the foundation structure for the unit, for installation thereof,
and for connection of the unit to the external piping. The drawing shall show the
space required for removal and replacement of tubes in the heat exchanger components,
removal of water boxes, covers of access openings, zinc anodes, vapor separators,
location of lifting lugs or eyebolts provided for handling of the unit or its components
and size of openings therein provided for lifting.
b. Assembly drawings. Assembly drawings shall show complete longitudinal and transverse
cross sectional views of the unit, relationship of all parts, arrangement of tubes in heat
exchanger components, method of tube end expansion, baffles, vapor separators, and
welding of adjacent parts. Liberal use of enlarged views or sections shall be made. If
necessary, subassembly drawings conforming to the above may be furnished for
individual components of the unit. The drawing shall be such that a thorough
understanding of the design and construction of the apparatus may be obtained without
reference to the related detailed drawings.
c. List of materials. The assembly drawing shall contain a list of materials showing names
of parts with identifying numbers and materials of all parts. The identifying numbers
shall also be shown adjacent to the part depicted in the various views, with arrows
pointing to the parts.
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