reliability and maintainability analysis

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2.1 Reliability, Availability and Maintainability (RAM) Analysis Reliability is the probability that a machine or system will perform a required function, under specified conditions, for stated period of time. Reliability, Availability, Maintainability (RAM) Analysis. Include updated reliability growth planning curve in the SEP at the Development RFP Release Decision Point and at Milestone B, and in the TEMP at Milestone B, Integrate R&M engineering analyses with logistics design support in the following areas: requirements and functional analysis; test planning; Reliability Centered Maintenance (RCM) and Condition Based Maintenance Plus (CBM+); and refinement of the maintenance concept, including the Level of Repair Analysis (LORA) and maintenance task analysis, Verify that plans have been established for the selection and application criteria of parts, materials and processes to limit reliability risks, Define contractor R&M engineering activities in the RFP and contract Statement of Work (SOW) for the EMD phase, during which R&M quantitative requirements and verification methods are incorporated, Update the RAM-C analysis to support the Development RFP Release Decision Point ensuring the JCIDS Sustainment Thresholds in the CDD are valid and feasible. Using the data collected along with a structured root-cause analysis to find the systemic root-causes of Bad Actors among the process to allocate the correct resources in order to solve the issues. Ensuring that R&M engineering activities and deliverables in the Request for Proposal (RFP) are appropriate for the program phase and product type. Definition. Assess the impact Engineering Change Proposals (ECP), operational mission / deployment changes, and other system variations have on R&M and product support. System availability based on existing equipment reliability performance. Conduct trade-off studies among R&M, availability, life cycle cost and other system performance parameters to effectively determine a preferred system solution. For MDAPs, attach the updated RAM-C Rationale Report to the SEP for Milestone B, Perform evaluations to assess R&M status and problems. Verify that program engineering organization charts describe how Reliability & Maintainability (R&M) engineering is integrated into Systems Engineering activities, Integrated Product Teams, and other stakeholder organizations and documented in the Systems Engineering Plan (SEP). The Systems Engineer should understand that R&M parameters have an impact on the system’s performance, availability, logistics supportability, and total ownership cost. Ensuring that R&M Data Item Descriptions (DIDs) that will be placed on contract are appropriately tailored (see the. Document in program acquisition documentation how the results of a reliability growth assessment support the likelihood of meeting the program requirements threshold. Assess the results of system maintainability and Built-In-Test (BIT) demonstrations to verity that the system meets technical performance maintainability requirements of the specification. The origins of contemporary reliability engineering can be traced to World War II. During the MSA Phase, the R&M engineer, as part of the program SE team, should: During the TMRR phase, the R&M engineer, as part of the program SE team, should: During the EMD phase, the R&M engineer, as part of the program SE team, should: During the P&D phase, the R&M engineer, as part of the programs SE team should: During the O&S phase, the R&M engineer, as part of the program SE team should: Reliability and Maintainability (R&M) Engineering. RCM is often referred to as a means to establish the safe minimum levels of maintenance. Identify where R&M considerations are required in program and acquisition documentation, i.e. Some of the commonly used maintainability engineering terms are shown on maintainability function, M(t), illustrated below. Identify Reliability & Maintainability (R&M) analysis events, tests and demonstrations required to develop product support plans. Work with Zonal Safety Analysis to detect potential hazardous interactions and derive required maintenance tasks. Assess that results from reliability growth tests to verify that the system meets technical performance reliability requirements of the specification. Planning verification methods for each R&M requirement. The purpose of Reliability and Maintainability (R&M) engineering (Maintainability includes Built-In-Test (BIT)) is to influence system design in order to increase mission capability and availability and decrease logistics burden and cost over a system’s life cycle. Reliability, Availability and Maintainability (RAM) Analysis Purpose. The 2020 theme for the annual R&M Symposium (RAMS) — a conference focused on the latest technical practices and procedures presented through technical papers and tutorials — was, “R&M in a Model-Based Systems Engineering Environment.” Include flow of requirements to subcontractors and suppliers. Develop R&M allocation assignments to system components in order to support attainment of desired system-level performance. In other words, maintainability measures the ease and speed with which a system can be restored to operational status after a failure occurs. Spare parts identification and provision philosophy. Collectively, they affect both the utility and the life-cycle costs of a product or system. Verify that RAM-C Rationale Report results have been incorporated into the JCIDS documents, i.e., CDD and CPD, and then are used to inform the development of specifications. Reliability Centred Maintenance (RCM) Methods of improving reliability After completing the module you should be able to: 1. For MDAPs, attach the updated RAM-C Rationale Report to the SEP for Milestone C. Ensure that the product baseline design and required testing can meet the R&M requirements, Ensure the final FMECA identifies failure modes, and their detection methods, that could result in personnel injury and/or mission loss, and ensure they are mitigated in the design, Ensure that the detailed R&M prediction to assess system potential to meet design requirements is complete, Verify through appropriate subsystem/equipment-level tests the readiness to enter system-level testing at or above the initial reliability established in the reliability growth planning curve in both the SEP and the TEMP, Verify system conformance to specified R&M requirements through appropriate demonstration and test, Implement a FRACAS to ensure feedback of failure data during test and to apply and track corrective actions, Coordinate with the Chief Developmental Tester (T&E Lead) and Operational Test Agencies (OTA) to ensure that the program office and OTA data collection agree on R&M monitoring and failure definitions, and that R&M and BIT scoring processes are consistent in verification of requirements through all levels of testing, Define contractor R&M engineering activities in the RFP and contract SOW for the P&D phase to ensure adequate R&M engineering activities take place during P&D and the RFP and contract SOW provide adequate consideration of R&M in re-procurements, spares and repair parts, Verify that parts, materials and processes meet system requirements through the use of a management plan detailing reliability risk considerations and evaluation strategies for the intended service life. Although not required, a set of functions is often detailed at the outset of a product development program. Assessing R&M status during program technical reviews. This policy implements key provisions of the DODD 5000.01 and DODI 5000.02. Reliability growth curves should be stated in a series of intermediate goals and tracked through fully integrated, system-level test and evaluation events until the reliability threshold is achieved. RAMS-3 2 Revision 0 Date: 28/07/2020 . Define contractor R&M engineering activities in the RFP and contract Statement of Work for the TMRR phase, which should include: Failure Mode, Effects and Criticality Analysis (FMECA), Subsystem and system-level reliability growth planning activities, Failure Reporting, Analysis and Corrective Action System (FRACAS), Participate in trade studies during requirements analysis and architecture design, Review results of R&M engineering analyses, verification tests, design approach, availability assessments and maintenance concept optimization to verify conformance to requirements, and to identify potential R&M problem areas, Contribute to integrated test planning to avoid duplication and afford a more complete utilization of all test data for R&M assessment. The discipline’s first concerns were electronic and mechanical components (Ebeling, 2010). The System Reliability and Maintainability Analysis course is for design and maintenance professionals that need to perform reliability modeling and analysis of complex systems for understanding and improvement of both design reliability and operational availability. Planning for system and system element reliability growth (i.e. RBDA Reliability Block Diagram Analysis RCM Reliability-Centered Maintenance RMA Reliability, Maintainability, and Availability SEE Single Event Effects SMA Safety and Mission Assurance TRL Technical Readiness Level WCA Worst Case Analysis 3.2 Definitions The following definitions may be used to plan R&M activities and interpret the R&M considerations outlined in Appendix A. Please note that you should expect to receive a response from our team, regarding your inquiry, within 2 business days. Develop Failure Definitions and Scoring Criteria (FDSC) to score maintenance data, calculate metric values against specification requirements and CDD thresholds, and for use in contractor R&M allocation and prediction reports. Reliability Centered Maintenance (RCM) is a structured methodology for determining a maintenance strategy. See, Verify initial production control of R&M degradation factors by test and inspection, production data analysis, and supplemental tests, Verify R&M characteristics, maintenance concept, repair policies, Government technical evaluation and maintenance procedures by T&E, Identify R&M and production-related BIT improvement opportunities via FRACAS and field data assessment, Review Engineering Change Proposals (ECP), operational mission/deployment changes and variations for impact on R&M, Update R&M predictions and FMECAs based on production tests, demonstration tests, operational evaluation and field results and apply them to the models previously developed to assess impacts on maintenance procedures, spares, manpower, packaging design, test equipment, missions and availability, Verify that parts, materials and processes management requirements for limiting reliability risk and "lessons learned" are utilized during all design change efforts including change proposals, variations, substitutions, product improvement efforts or any other hardware change effort, Assess operational data to determine the adequacy of R&M and BIT characteristics performance; maintenance planning, features and procedures; provisioning plans, test equipment design; and maintenance training, Identify problem areas for correction through ongoing closed-loop FRACAS and field data assessment, Monitor availability rates and respond to negative trends and data anomalies. 12 requires Program Managers (PMs) to implement a comprehensive R&M engineering program as an integral part of the systems engineering (SE) process. Ensuring R&M engineering is fully integrated into SE activities, Integrated Product Teams and other stakeholder organizations (i.e., Logistics, Test & Evaluation (T&E), and System Safety). Existing operating plants perform RAM analysis to asses and identify the weak links in their production processes as well as to use the data in order to further calculate a life cycle cost analysis for critical equipment that may be in need of reliability enhancements. The System Reliability and Maintainability Analysis course is for design and maintenance professionals that need to perform reliability modeling and analysis of complex systems for understanding and improvement of both design reliability and operational availability. Maintenance strategy development (optimum intervals) as a result of failure mode identification and analysis. Maintainability factors into availability by describing how downtime originates and is resolved. RELIABILITY AND MAINTAINABILITY (R&M) ANALYSIS return. Maintainability Analysis Background: 1. Having access to the proper data combined with our know-how and years of experience we have been able to analyze, identify, and understand the issues the plague turbomachinery developing short-term solutions and long-term strategies that have resulted in savings and higher reliability. Everyone desires products that offer more features, provide higher value, cost less and last longer. Reliability, availability, and maintainability analysis is a study in which all possible and existing failure modes, frequencies, and consequences are evaluated with the purpose of estimating an equipment, system, and/or process’ production capability/availability. Update the RAM-C analysis, ensuring the JCIDS Sustainment Thresholds in the CPD are valid. These four aspects drive the development of any product. Estimation of the distribution parameters is also significant for making a decision. If a single curve is not adequate to describe overall system reliability, curves for critical subsystems, with rationale for their selection, should be provided. This early action results in increased acquisition efficiency and higher success rates during operational testing, and can even occur in the development process as early as the Engineering and Manufacturing Development (EMD) phase. When it comes to Reliability and Maintainability (R&M), the public and private sectors’ objectives appear to be aligned. The RCM process focuses on preventive maintenance of equipment most likely to fail, or where failures have the most severe consequences. Thus, reliability is the probability of non-failure in a given period of time. Analysis is done using logical and statistical models A base case is selected along with 2 to 3 sensitivity cases Base case is configured to the original design and plant performance model Sensitivity cases are analysed with changes to original configuration to ascertain if the revised changes can attain the Reliability, Availability and Maintainability targets Source ; Acceptance criteria . Create an optimised maintenance program through hamornisation of tasks and intervals at certification’s requirements level. This session provides an introduction to Availability Reliability and Maintainability Assessment. However, even in these … Reliability, Maintainability, and Availability (RMA) Analysis for the ECS Project White Paper February 2002 Prepared Under Contract NAS5-60000 RESPONSIBLE AUTHOR William Wyman /s/ 2/11/02 William Wyman, ILS Manager Date EOSDIS Core System Project RESPONSIBLE OFFICE Valecia Maclin /s/ 2/11/02 Valecia Maclin, Director Systems Engineering Date EOSDIS Core System Project … The purpose of Reliability and Maintainability (R&M) engineering (Maintainability includes Built-In-Test (BIT)) is to influence system design in order to increase mission capability and availability and decrease logistics burden and cost over a system’s life cycle. Maintainability Analysis is the method of determining how to best design a product for ease of maintenance. 10-19-3: Provide R&M evaluations and recommendations as inputs to product support analysis and testing. INTRODUCTION TO RAM ANALYSIS We have discussed many approaches to working with failure data and making decisions based on qualitative or quantitative reliability engineering methodologies. 2.1. Identifying and tracking R&M risks and Technical Performance Measures. Maintainability is an important aspect in overall system continuous improvements efforts, along with reliability, safety, and other factors vital to overall product viability. Ensuring the verification methods for each R&M requirement are described in the Test and Evaluation Master Plan (TEMP), along with a reliability growth planning curve beginning at Milestone B. Use the results of the contractor’s FRACAS and associated R&M data collection systems to identify and correct problems in equipment design or manufacturing. Maintainability: MSG-3 and Zonal Safety Assessment . Identify and apply the analysis methodologies to -systems, including both design and operation restrictions, to determine the Availability, Reliability and Maintainability of these Systems. Reliability, maintainability, and availability (RAM) are three system attributes that are of great interest to systems engineers, logisticians, and users. Translate JCIDS R&M thresholds to performance specification requirements using Operational Mode Summary/Mission Profile (OMS/MP) and failure definitions. Verify that results of R&M assessments of existing equipment (i.e., GFE/COTS) and their interfaces are appropriately applied to ensure that the equipment has a proven history of R&M and that the equipment is correctly used in system design. SEP, AS, TEMP and LCSP. Maintenance and failure data analysis (FRACAS, FMEA) Design and maintenance of R&M database ; Weibull analysis ; Multiple failure modes analysis (typological analysis) Parametric and non parametric analysis ; Time series analysis ; Fast Fourrier Transform (FFT), Spectral and cross spectral analysis ; Fault tree analysis ; Determination … Verify that R&M block diagrams and math models reflect the equipment/system configuration and support the development of R&M allocations and predictions. The RAM Analyst reports to the RAM Analysis Lead and is an extended part of the WS RAM Thread team. Calculate Metrics Based on Repair Time Data Given time-to-repair data, this tool calculates the mean, median, and maximum corrective time-to-repair, assuming a lognormal time-to-repair distribution. Browse available courses in your region Analyze conceptual design approaches and estimate the feasibility with respect to R&M ICD performance capabilities, Perform AoA trade-off studies among R&M, availability and other system performance parameters to arrive at a preferred system alternative. Dominant failure modes and consequences to be used as an aid to developing equipment short- and long-term strategies. Another major building block of reliability is maintainability. Applicability. State of Good Repair ; RAM (RELIABILITY, AVAILABILITY, MAINTAINABILITY) PLAN PROCESS . A Preventive Maintenance Analysisis the method of determining how often a product will need to be maintained periodically in order to keep it in good working order. The set of product functions or features defines the operating state and, conversely, what a system failure may include. To ensure a successful R&M engineering program, the Systems Engineer should as a minimum integrate the following activities across the program’s engineering organization and processes: As part of the SE process, the R&M engineer should be responsible for the R&M activities by the acquisition phase outlined in Table 48. Browse available courses in your region . Implementing this methodology may both increase equipment reliability and reduce maintenance costs. Standard operating and maintenance procedures. It is difficult to trap the global solution Integrating R&M engineering activities and reliability growth planning curve(s) in the Systems Engineering Plan (SEP) at Milestones A and B and at the Development RFP Release Decision Point. 10-19-1: R&M requirements, technical planning and technical management are documented in program acquisition documentation. A llocation - The assignment of reliability (or maintainability) performance requirements to subsystems and elements within a system which will result in meeting the overall reliability (or maintainability) performance requirements for the system if each of these performance requirements is attained. within the context of a model. Reliability Availability Maintainability and Safety ; SOGR . Reliability improvement program, DAG, Chapter 3-4.3.19 Reliability and Maintainability Engineering, Failure Modes & Effects Analysis (FMEA) and Failure Modes, Effects, & Criticality Analysis (FMECA), ENG 201: Applied Systems Engineering in Defense Acquisition, Part I, CLL 030: Reliability Centered Maintenance (RCM), LOG 103: Reliability, Availability, and Maintainability (RAM), US Army Materiel Command Logistics Support Activity (LOGSA) Tools Suite. To enable students to apply appropriate ARM methodologies to projects, ensuring that ARM is included within the design and that ARM targets are met. Ensuring specifications contain realistic quantitative R&M requirements traceable to the Initial Capabilities Document (ICD), Capability Development Document (CDD) and Capability Production Document (CPD). DoDI 5000.02, Enc 3, sec. This is similar to system reliability analysis except that the random variable of interest in maintainability analysis is time-to-repair rather than time-to-failure. full analysis of the expected benefits and . A Maintainability Prediction is the method of determining how long a product will take to be repaired once it fails. Maintainability is the measure of how quickly and easily a product or system can be repaired in order to return to an operating state after a failure has occurred. The main target is to improve the operational use by increasing the cycle time of the equipment, and reducing at the same time the probability of failures, and thereby increasing the line availability. The FMECA is normally used as basis for RCM analyses. Assess the results of R&M predictions and Failure Modes, Effects, and Criticality Analyses (FMECAs) and determine how operations are impacted related to spares management, manpower estimates, level of repair analyses, troubleshooting procedure development, and availability calculations. Reliability and Maintainability (R&M), DoDI 5000.02, E5: 6.c. This regulation prescribes Department of the Army policy and respon-sibilities for the reliability, availability, and maintainability of its materiel. During product development, the design is regularly evaluated or tested and compared to the desired set of functions. Please note: Online payment and registration is compatible with Microsoft … Cost may or m… Develop Technical Performance Measures (TPMs) consistent with the reliability growth planning curve and incorporate into the program’s Systems Engineering Plan (SEP). Identify the criteria to evaluate contractor test plans for adequacy and completeness of test plan data to support R&M considerations. 2. Reliability, Availability and Maintainability (RAM) analysis identifies equipment whose failure affects the facility availability, performing quantitative reliability analysis and proposes effective countermeasures in order to improve the system reliability and maintainability. Verify that R&M prediction methods, i.e., parts count, stress analyses, physics of failure, and software reliability methods, are appropriately applied to a proposed design or on a comparison of alternative designs. Reliability, Availability, and Maintainability Analysis 4.1. The System Reliability and Maintainability Analysis course is for design and maintenance professionals that need to perform reliability modeling and analysis of complex systems for understanding and improvement of both design reliability and operational availability. In Chapter 3, the examples showed how it is possible to assess the whole system by FMEA or RCM methodologies. Including consideration of R&M in all configuration changes and trade-off analyses. Reliability, Availability and Maintainability Study (RAMS) RAMS refers to Reliability, Availability and Maintainability Study which is a decision making tool used to identify how to increase the availability of the system, and thus increase the overall profit as well as reducing the life cycle costs. Probability distributions play an important role in the reliability studies and have many applications in engineering. Properly planned, R&M engineering reduces cost and schedule risks by preventing or identifying R&M deficiencies early in development. Document R&M Engineering in the Systems Engineering Plan (SEP) to define the methods for implementing R&M engineering tasks, technical staffing, and technical management. Introduction Reliability, Availability and Maintainability (RAM) Study can be characterized as a qualitative and quantitative indicator of the degree that a LRT system, or the sub-systems The benefits of doing a proper RAM analysis include increasing a system’s productivity, lowering life-cycle costs (with proper investments), and increasing overall profit of an operating business by identifying the following: Our analyst are experienced engineers with in-depth knowledge and understanding of turbomachinery and the various failure modes that affect the performance and reliability of the equipment. Verify that R&M requirements verification methods are included in the program’s system performance specification and Test and Evaluation Master Plan (TEMP). Develop Failure Mode, Effects and Criticality Analysis (FMECA) to assess the severity of the effects of system failure modes on system performance. The studies should be performed in conjunction with product support, cost and design personnel, using the, Conduct a Reliability, Availability, Maintainability and Cost (RAM-C) analysis. Identify product support problem areas for correction using a closed-loop Failure Reporting, Analysis and Corrective Action System (FRACAS). The GBSD Reliability, Availability, Maintainability Analyst is responsible for executing the Weapon System Reliability, Availability and Maintainability Analysis scope of work in support of Weapon System Capability assessments and ultimate verification of RAM requirements. Highly Accelerated Life Test, Accelerated Life Test or conventional reliability growth tests for newly developed equipment). Reliability and maintainability engineering attempts to study, measure, and analyze the failure and repair of the production line. The life cycle cost analysis results are key in doing a comparison analysis with replacement options to determine whether a new purchase is required or further investment is needed with the existing equipment and/or systems. Document the results of the assessment and provide to decision maker. Use data from the RAM-C Rationale Report to provide the following for logistics design support: The initial failure mode assessment, including effects of failure on system performance and the probable manner in which each failure mode would be detected to provide guidance to planning and the conceptual design of the diagnostics concept and maturation process, Failure rate and removal rate estimates, for both corrective and preventive maintenance, to provide a realistic basis for equipment and replaceable unit spares provisioning planning. 10-19-2: R&M engineering analysis results and technical data are applied to achieve desired system performance. Definitions . Through the … Ensuring data from R&M analyses, demonstrations and tests are properly used to influence life-cycle product support planning, availability assessments, cost estimating and other related program analyses. Comprehensive test planning should include subsystem reliability growth and maintainability and BIT demonstrations as appropriate, Understand schedule and resource constraints, and adjust the reliability growth planning curve based on more mature knowledge points. Reliability, availability, and maintainability analysis is a study in which all possible and existing failure modes, frequencies, and consequences are evaluated with the purpose of estimating an equipment, system, and/or process’ production capability/availability. This video will explore Reliability, Availability, Maintainability, and Supportability (R.A.M.S.) OT&E for Reliability and Maintainability, DoDI 5000.02, E6: 2.a.(1)(a)3. Reliability, availability and maintainability (RAM) As features of long-term system operation, reliability, availability, and maintainability analysis are significant approaches to reduce maintenance costs and improve system function and operation. Term. For Major Defense Acquisition Programs (MDAP), prepare a preliminary RAM-C Rationale Report and attach the report to the SEP for Milestone A, Translate ICD performance capabilities and draft CDD thresholds to R&M specification requirements based on the Concept of Operations/Operational Mode Summary/Mission Profile (CONOPS/OMS/MP), failure definitions and utilization rates, Develop a system reliability growth planning curve and include it in the SEP. Click Here to Continue Browser Session   ❯, Guidance for Tailoring R&M Engineering Data, Technology Maturation and Risk Reduction (TMRR) Phase, Engineering and Manufacturing Development (EMD) Phase, MIL-STD-1546 (Parts, Materials, and Processes Control Program for Space and Launch Vehicles), MIL-STD-1547 (Electronic Parts, Materials, and Processes for Space and Launch Vehicles), MIL-STD-11991 (General Standard for Parts, Materials, and Processes), DoDI 5000.02, E3: 12. 10-19-4: Documentation of reliability and maintainability growth and testing. The module also discusses the concept of critical and life-limited items and the use of reliability-centred maintenance strategies to reduce maintenance costs. Reliability, Availability and Maintainability Study of a Light Rail Transit System Cèlia Nadal Reales 8 1. An aid to developing equipment short- and long-term strategies & Maintainability ( R & M considerations required. 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Verification Methods for each R & M in all configuration changes and trade-off.!

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