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DI-SESS-81585C

Reliability and Maintainability Test Plan

Describes the contractor's Reliability and Maintainability (R&M) test plan, including tests, demonstrations, schedule, and evaluation criteria for procuring activity review and approval.

Approval DateFebruary 18, 2020
AMSC NumberN10150
Preparing ActivityAS
Project NumberSESS-2020-016
OPR—
DTIC ApplicableYes
GIDEP ApplicableYes
LimitationNo
Applicable Forms—
Approval Limitation—
Form Version—
DID Formatfree_text
963C CompliantYes
DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.
Supersedes
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Related
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Description & Purpose

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Application & Interrelationship

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Use & Relationship

The Reliability and Maintainability (R&M) Test Plan describes R&M tests and demonstrations at the equipment, subsystem and system levels (including Government developmental and operational tests), their purpose, and schedule. It identifies items to be tested, the test equipment and support requirements, the test conditions to be imposed, the parameters to be measured, and the criteria against which the test results will be measured. This document will be used by the procuring activity for review, approval, and subsequent surveillance and evaluation of the contractor's R&M test and demonstration program.

This Data Item Description (DID) contains the format, intended use information, and content preparation instructions for the data product generated by the specific and discrete task described in the solicitation, and should be tailored appropriately.

Preparation Instructions

1Reference documentsNone.
2FormatThe R&M Test Plan shall be in contractor's format.
3ContentThe R&M Test Plan shall identify and describe the planned contractor activities for implementation of R&M (Maintainability includes Built-In-Test) testing and demonstration throughout the integrated test program. The R&M Test Plan shall include the following:
3.1A complete listing of all tests and demonstrationsA complete listing of all tests and demonstrations to be conducted for obtaining data for use in reliability and/or maintainability analysis and evaluation of the contract item or constituent elements thereof. This shall include all tests to be conducted by the Government, Contractor, Subcontractors, and Vendors participating in the program.
3.2A description of the overall test scheduleA description of the overall test schedule (including time for retest, if required) and resources, including person-months. Include a figure that displays (in contractor format) the integrated planning and timing for Government, prime contractor, and subcontractor and vendor tests. A sample schedule is shown in Figure 1.
3.3A description of the adequacyA description of the adequacy (i.e. breadth of testing, timing of testing, stress to system) of R&M test provisions for achieving requirements.
3.4Reliability growth planning curve(s)Reliability growth planning curve(s) that was integrated with the program's master schedule, plotting reliability against test time (or life units) to meet the quantitative requirement(s) specified in the solicitation or contract. Also, include the rationale for the initial reliability, planned growth rate (growth rate should be tied to realistic management metrics governing the fraction of initial failure rate to be addressed by corrective actions along with the effectiveness of the corrective action), test resources and growth model used. Sample system level reliability growth planning curve is shown in Figure 2.
3.5Describe data analysis methodsDescribe data analysis methods, analytical procedures to be employed, data reduction routines, and reliability growth techniques used to assess demonstrated and projected reliability.
3.6Summarize R&M engineering involvementSummarize R&M engineering involvement in applicable tests or demonstrations from equipment (i.e. qualification, accelerated life tests, BIT demonstrations), subsystem integration tests through system-level performance tests. Delineate responsibilities with regard to R&M engineering, for test design, test plan review and approval, test performance, data reduction, data analysis, and failure reporting, analysis, and corrective action requirements.
3.7Define applicable R&M parameter measurementsDefine applicable R&M parameter measurements, operating time data, test conditions, and failure and BIT information that should be collected during existing tests in the overall test plan to achieve maximum practical integration of R&M test requirements.
3.8Attach preliminary applicable data collection sheetsAttach preliminary applicable data collection sheets and R&M scoring and evaluation criteria (i.e., Failure Definition and Scoring Criteria), including the corrective action evaluation methodology that will be used to compute R&M performance based on the data collected during testing.
3.9A list of test reportsA list of test reports to be issued as a result of planned tests or demonstrations.
3.10For each test or demonstration listedFor each test or demonstration listed, provide a description of:
3.10.1The test or demonstration objectives and quantitative goalsThe test or demonstration objectives and quantitative goals or requirements to be demonstrated, including specific references to the applicable sections of the specification.
3.10.2The quantity, configuration, and identification of items to be testedThe quantity, configuration, and identification of items to be tested, including hardware and software design level and maturity.
3.10.3The test or demonstration methods planned
3.10.4The test conditionsThe test conditions, including the duty cycle, and environmental, operational, and performance profiles.
3.10.5The mode(s) of operation of the items under testThe mode(s) of operation of the items under test, including configuration and mission requirements.
3.10.6The test duration or sample size
3.10.7The statistical R&M test design criteriaThe statistical R&M test design criteria, as appropriate, including decision criteria (fail and accept criteria) if applicable.
3.10.8The measurements to be recordedThe measurements to be recorded and the provisions for recording measurement data required for R&M evaluation.
3.10.9The test conduct ground rules and system interface boundaries
3.10.10Adequacy of the item support elementsAdequacy of the item support elements and an estimate of their effect on the item maintainability.
3.10.11Description of support equipment, tools and test equipmentDescription of support equipment, tools and test equipment, technical manuals to be used, spares and consumables and any applicable safety and calibration equipment. Test facility descriptions and requirements, including provisions for voltage, temperature, and vibration.
3.10.12The Government furnished property requirements and impact
3.10.13List of test procedures to be used
3.10.14Failure Reporting, Analysis and Corrective Action (FRACAS) system to be used

References

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Figures

Figure 1: Notional Integrated Test Plan

Figure 1. Notional Integrated Test Plan

Figure 2: Sample EMD Test Sequence Growth Curve

Figure 2. Sample EMD Test Sequence Growth Curve

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