MIL-STD-2106A(SH) APPENDIX A
A.3 DETAILED REQUIREMENTS - TEST STAGE DEFINITIONS AND EXAMPLES
A.3.1 Scope. This appendix defines the seven stages of industrial testing and provides examples for stages two through seven. This appendix is a mandatory part of this standard. The information contained herein is intended for compliance.
A.3.2 Application. These test stage definitions apply to all testing of shipboard equipment and systems performed in a shipyard or at sea during industrial periods.
A.3.3 Detailed requirements.
A.3.3.1 Test stages. Industrial testing is accomplished in seven stages as defined in the following paragraphs. A.3.3.2 Stage one. material receipt inspection and shop tests. Stage one includes those tests and inspections
that provide for inventory management and physical inspection of new material, equipment and systems, and
associated documentation. These tests and inspections are intended to ensure receipt of equipment in good physical condition by the shipbuilder or other industrial organization. Stage one documentation is not normally in the form of a test procedure.
Stage one further includes those tests and inspections conducted prior to shipboard installation for new or repaired equipment and systems. In instances where equipment and systems are repaired aboard ship, shop test procedures may be used to validate readiness for shipboard testing. For work planning and cost accounting purposes, stage one is not a part of the test program and will normally be a part of the industrial organization's quality assurance program.
A.3.3.3 Stage two. shipboard installation inspections and tests. Stage two tests and inspections are conducted prior to operation of installed or relocated equipment, cabling, waveguide, piping, ventilation, etc., to ensure that each installation has been accomplished in accordance with established plans and specifications. The shipbuilder or industrial organization is normally responsible for the preparation of stage two test procedures.
A.3.3.4 Stage three. equipment tests. Stage three tests demonstrate that after shipboard installation, the individual equipment performs within the established limits and tolerances. These equipment operability tests are conducted independent of the system (i.e., the equipment may be isolated from the system) and can be conducted prior to complete system installation.
A.3.3.5 Stage four. intrasystem tests. Stage four tests demonstrate that equipment and required functions, entirely within one independent system, perform within established limits and tolerances. Stage four testing
normally consists of intrasystem functions, signals, and commands within a single independent system of the combat system or ship system. Stage four includes all tests involving two or more items of equipment which do not involve more than one independent system of the combat system or ship system. Stage four tests may include tests between
two or more items of equipment and between two groups of equipment within the same system.
A.3.3.6 Stage five. intersystem tests. Stage five tests involve two or more independent systems within the combat system, ship system, or between the combat system and the ship system. These tests demonstrate that two or more independent systems perform a specific function or functions within established standards. The exchange of intersystem signals, commands, functions, and all associated computer interfaces are included.
A.3.3.7 Stage six. special tests. Stage six tests require special simulation facilities or resources external to the immediate test organization, but are conducted as part of the dockside work package for the industrial effort.
Special tests can apply to one or more items of equipment, a single system, or a number of systems, and may require total ship operability. Stage six tests that can only be performed at-sea should be designated as stage seven.
Normally, there will be very few stage six tests in an industrial test program.
A.3.3.8 Stage seven. trials tests. Stage seven tests must be conducted during sea trials; e.g., Builders Trials (BT), Acceptance Trials (AT), Underway Trials (UT), and Post-Repair Trials (PRT). Test procedures are not identified with a stage seven number unless the test can only be conducted entirely or partially at sea.
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