MIL-STD-46855 Human Engineering Requirements For Military Systems, Equipment, And FacilitiesThis standard establishes and defines the requirements for applying human engineering to the design, development, and acquisition of military systems, equipment, and facilities. These requirements include the work to be accomplished in conducting a human engineering effort integrated with the total system engineering and development effort. These requirements are the basis for including human engineering in proposals; system, equipment, software and associated user interfaces, and facility analysis, design and test; and documentation and reporting.

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MIL-STD-46855A

APPENDIX A

SELECTION AND TAILORING OF MIL-STD-46855

A.1  SCOPE.  This appendix provides criteria for the procuring activity's selection of the standard for contract use and, when used, the partial and incremental application of the requirements provisions.

A.2  APPLICABLE DOCUMENTS. HANDBOOKS

DEPARTMENT OF DEFENSE

MIL-HDBK-505      -    Definitions of Item Levels, Item Exchangeability, Models, and

Related Items

A.3  SELECTION OF MIL-STD-46855

A.3.1  General.  Selection of MIL-STD-46855 for application to contracts for military systems, equipment, and facilities is dependent upon the nature of the system (hardware and/or software and associated user interfaces) in terms of operational, maintenance, and support functions; the degree to which human interface is involved with the system; and the acquisition phase involved.

Selection of MIL-STD-46855 is generally independent of system complexity, branch of military service involved, equipment duty cycles and, within practical limits, contract type, cost, duration, and size of production lots.

A.3.2  Selection for use.  A decision must first be made whether to use MIL-STD-46855, prescribe it as a guide, or invoke it as a mandatory contract provision.  Selection for use should consider the following provisions.

A.3.2.1  Nature of the materiel.  Selection of MIL-STD-46855 for a specific contract is dependent upon the nature of the end-item, materiel, or system in terms of its ability to perform operational, maintenance, and support functions.  Generally, the standard:

a.   should not be considered for use in contracts for parts, subassemblies, or units as defined in MIL-HDBK-505, but

b.   should be considered for use in contracts for sets, subsystems, and systems, as defined in MIL-HDBK-505, and for facilities.

The rationale for this initial screening is that parts, subassemblies, assemblies, and units typically are not produced to perform an operational function, but can be used as elements of different sets, subsystems, etc., which produce different desired operational functions.  The contractor furnishing

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