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Reliability, Maintainability, and Supportability


Reliability, Maintainability, and Supportability

Best Practices for Systems Engineers
Wiley Series in Systems Engineering and Management 1. Aufl.

von: Michael Tortorella

118,99 €

Verlag: Wiley
Format: PDF
Veröffentl.: 25.02.2015
ISBN/EAN: 9781119058304
Sprache: englisch
Anzahl Seiten: 464

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Beschreibungen

<p><b>Focuses on the core systems engineering tasks of writing, managing, and tracking requirements for reliability, maintainability, and supportability that are most likely to satisfy customers and lead to success for suppliers<br /> <br /> </b>This book helps systems engineers lead the development of systems and services whose reliability, maintainability, and supportability meet and exceed the expectations of their customers and promote success and profit for their suppliers. This book is organized into three major parts: reliability, maintainability, and supportability engineering. Within each part, there is material on requirements development, quantitative modelling, statistical analysis, and best practices in each of these areas. Heavy emphasis is placed on correct use of language. The author discusses the use of various sustainability engineering methods and techniques in crafting requirements that are focused on the customers’ needs, unambiguous, easily understood by the requirements’ stakeholders, and verifiable. Part of each major division of the book is devoted to statistical analyses needed to determine when requirements are being met by systems operating in customer environments. To further support systems engineers in writing, analyzing, and interpreting sustainability requirements, this book also</p> <ul> <li>Contains “Language Tips” to help systems engineers learn the different languages spoken by specialists and non-specialists in the sustainability disciplines</li> <li>Provides exercises in each chapter, allowing the reader to try out some of the ideas and procedures presented in the chapter</li> <li>Delivers end-of-chapter summaries of the current reliability, maintainability, and supportability engineering best practices for systems engineers</li> </ul> <p><i><br /> Reliability, Maintainability, and Supportability</i> is a reference for systems engineers and graduate students hoping to learn how to effectively determine and develop appropriate requirements so that designers may fulfil the intent of the customer.</p>
<p>Foreword xviii</p> <p>Acknowledgments xxii</p> <p><b>Part I Reliability Engineering</b></p> <p><b>1. Systems Engineering and the Sustainability Disciplines 3</b></p> <p>1.1 Purpose of this Book 3</p> <p>1.1.1 Systems Engineers Create and Monitor Requirements 3</p> <p>1.1.2 Good Requirements are a Key to Success 4</p> <p>1.1.3 Sustainability Requirements are Important Too 6</p> <p>1.1.4 Focused Action is Needed to Achieve the Goals Expressed by the Requirements 7</p> <p>1.2 Goals 8</p> <p>1.3 Scope 10</p> <p>1.3.1 Reliability Engineering 10</p> <p>1.3.2 Maintainability Engineering 11</p> <p>1.3.3 Supportability Engineering 12</p> <p>1.4 Audience 12</p> <p>1.4.1 Who Should Read This Book? 12</p> <p>1.4.2 Prerequisites 13</p> <p>1.4.3 Postrequisites 13</p> <p>1.5 Getting Started 14</p> <p>1.6 Key Success Factors for Systems Engineers in Reliability, Maintainability, and Supportability Engineering 15</p> <p>1.6.1 Customer–Supplier Relationships 15</p> <p>1.6.2 Language and Clarity of Communication 16</p> <p>1.6.3 Statistical Thinking 17</p> <p>1.7 Organizing a Course Using this Book 17</p> <p>1.7.1 Examples 18</p> <p>1.7.2 Exercises 18</p> <p>1.7.3 References 18</p> <p>1.8 Chapter Summary 19</p> <p>References 19</p> <p><b>2. Reliability Requirements 20</b></p> <p>2.1 What to Expect from this Chapter 20</p> <p>2.2 Reliability for Systems Engineers 21</p> <p>2.2.1 “Reliability” in Conversation 21</p> <p>2.2.2 “Reliability” in Engineering 21</p> <p>2.2.3 Foundational Concepts 21</p> <p>2.2.4 Reliability Concepts for Systems Engineers 25</p> <p>2.2.5 Definition of Reliability 28</p> <p>2.2.6 Failure Modes, Failure Mechanisms, and Failure Causes 32</p> <p>2.2.7 The Stress–Strength Model 34</p> <p>2.2.8 The Competing Risk Model 35</p> <p>2.3 Reliability, Maintainability, and Supportability are Mutually Reinforcing 36</p> <p>2.3.1 Introduction 36</p> <p>2.3.2 Mutual Reinforcement 40</p> <p>2.4 The Structure of Reliability Requirements 41</p> <p>2.4.1 Reliability Effectiveness Criteria 41</p> <p>2.4.2 Reliability Figures of Merit 43</p> <p>2.4.3 Quantitative Reliability Requirements Frameworks 44</p> <p>2.5 Examples of Reliability Requirements 46</p> <p>2.5.1 Reliability Requirements for a Product 46</p> <p>2.5.2 Reliability Requirements for a Flow Network 48</p> <p>2.5.3 Reliability Requirements for a Standing Service 50</p> <p>2.5.4 Reliability Requirements for an On‐Demand Service 51</p> <p>2.6 Interpretation of Reliability Requirements 53</p> <p>2.6.1 Introduction 53</p> <p>2.6.2 Stakeholders 54</p> <p>2.6.3 Interpretation of Requirements Based on Effectiveness Criteria 55</p> <p>2.6.4 Interpretation of Requirements Based on Figures of Merit 58</p> <p>2.6.5 Models and Predictions 62</p> <p>2.6.6 What Happens When a Requirement is Not Met? 63</p> <p>2.7 Some Additional Figures of Merit 65</p> <p>2.7.1 Cumulative Distribution Function 65</p> <p>2.7.2 Measures of Central Tendency 65</p> <p>2.7.3 Measures of Dispersion 69</p> <p>2.7.4 Percentiles 70</p> <p>2.7.5 The Central Limit Theorem and Confidence Intervals 71</p> <p>2.8 Current Best Practices in Developing Reliability Requirements 73</p> <p>2.8.1 Determination of Failure Modes 74</p> <p>2.8.2 Determination of Customer Needs and Desires for Reliability and Economic Balance with Reliability Requirements 74</p> <p>2.8.3 Review All Reliability Requirements for Completeness 76</p> <p>2.8.4 Allocation of System Reliability Requirements to System Components 76</p> <p>2.8.5 Document Reliability Requirements 79</p> <p>2.9 Chapter Summary 79</p> <p>2.10 Exercises 81</p> <p>References 82</p> <p><b>3. Reliability Modeling for Systems Engineers 84</b></p> <p>3.1 What to Expect from this Chapter 84</p> <p>3.2 Introduction 85</p> <p>3.3 Reliability Effectiveness Criteria and Figures of Merit for Nonmaintained Units 87</p> <p>3.3.1 Introduction 87</p> <p>3.3.2 The Life Distribution and the Survivor Function 90</p> <p>3.3.3 Other Quantities Related to the Life Distribution and Survivor Function 95</p> <p>3.3.4 Some Commonly Used Life Distributions 102</p> <p>3.3.5 Quantitative Incorporation of Environmental Stresses 111</p> <p>3.3.6 Quantitative Incorporation of Manufacturing Process Quality 116</p> <p>3.3.7 Operational Time and Calendar Time 118</p> <p>3.3.8 Summary 120</p> <p>3.4 Ensembles of Nonmaintained Components 120</p> <p>3.4.1 System Functional Decomposition 120</p> <p>3.4.2 Some Examples of System and Service Functional Decompositions 121</p> <p>3.4.3 Reliability Block Diagram 124</p> <p>3.4.4 Ensembles of Single‐Point‐of‐Failure Units: Series Systems 125</p> <p>3.4.5 Ensembles Containing Redundant Elements: Parallel Systems 131</p> <p>3.4.6 Structure Functions 138</p> <p>3.4.7 Path Set and Cut Set Methods 139</p> <p>3.4.8 Reliability Importance 144</p> <p>3.4.9 Non‐Service‐Affecting Parts 145</p> <p>3.5 Reliability Modeling Best Practices for Systems Engineers 146</p> <p>3.6 Chapter Summary 146</p> <p>3.7 Exercises 146</p> <p>References 149</p> <p><b>4. Reliability Modeling for Systems Engineers 153</b></p> <p>4.1 What to Expect from this Chapter 153</p> <p>4.2 Introduction 154</p> <p>4.3 Reliability Effectiveness Criteria and Figures of Merit for Maintained Systems 154</p> <p>4.3.1 Introduction 154</p> <p>4.3.2 System Reliability Process 155</p> <p>4.3.3 Reliability Effectiveness Criteria and Figures of Merit Connected with the System Reliability Process 156</p> <p>4.3.4 When is a Maintainable System Not a Maintained System? 161</p> <p>4.4 Maintained System Reliability Models 162</p> <p>4.4.1 Types of Repair and Service Restoration Models 162</p> <p>4.4.2 Systems with Renewal Repair 163</p> <p>4.4.3 Systems with Revival Repair 166</p> <p>4.4.4 More‐General Repair Models 171</p> <p>4.4.5 The Separate Maintenance Model 172</p> <p>4.4.6 Superpositions of Point Processes and Systems with Many Single Points of Failure 177</p> <p>4.4.7 State Diagram Reliability Models 179</p> <p>4.5 Stability of Reliability Models 181</p> <p>4.6 Software Resources 182</p> <p>4.7 Reliability Modeling Best Practices for Systems Engineers 182</p> <p>4.7.1 Develop and Use a Reliability Model 183</p> <p>4.7.2 Develop the Reliability–Profitability Curve 183</p> <p>4.7.3 Budget for Reliability 184</p> <p>4.7.4 Design for Reliability 186</p> <p>4.8 Chapter Summary 186</p> <p>4.9 Exercises 187</p> <p>References 188</p> <p><b>5. Comparing Predicted and Realized Reliability with Requirements 190</b></p> <p>5.1 What to Expect from this Chapter 190</p> <p>5.2 Introduction 190</p> <p>5.3 Effectiveness Criteria, Figures of Merit, Metrics, and Predictions 191</p> <p>5.3.1 Review 191</p> <p>5.3.2 Example 192</p> <p>5.3.3 Reliability Predictions 193</p> <p>5.4 Statistical Comparison Overview 194</p> <p>5.4.1 Quality of Knowledge 194</p> <p>5.4.2 Three Comparisons 195</p> <p>5.4.3 Count Data from Aggregates of Systems 198</p> <p>5.4.4 Environmental Conditions 198</p> <p>5.5 Statistical Comparison Techniques 199</p> <p>5.5.1 Duration Requirements 199</p> <p>5.5.2 Count Requirements 208</p> <p>5.6 Failure Reporting and Corrective Action System 212</p> <p>5.7 Reliability Testing 214</p> <p>5.7.1 Component Life Testing 214</p> <p>5.7.2 Reliability Growth Testing 215</p> <p>5.7.3 Software Reliability Modeling 216</p> <p>5.8 Best Practices in Reliability Requirements Comparisons 216</p> <p>5.8.1 Track Achievement of Reliability Requirements 216</p> <p>5.8.2 Institute a FRACAS 216</p> <p>5.9 Chapter Summary 216</p> <p>5.10 Exercises 217</p> <p>References 218</p> <p><b>6. Design for Reliability 219</b></p> <p>6.1 What to Expect from this Chapter 219</p> <p>6.2 Introduction 220</p> <p>6.3 Techniques for Reliability Assessment 221</p> <p>6.3.1 Quantitative Reliability Modeling 221</p> <p>6.3.2 Reliability Testing 223</p> <p>6.4 The Design for Reliability Process 224</p> <p>6.4.1 Information Sources 226</p> <p>6.5 Hardware Design for Reliability 228</p> <p>6.5.1 Printed Wiring Boards 228</p> <p>6.5.2 Design for Reliability in Complex Systems 235</p> <p>6.6 Qualitative Design for Reliability Techniques 236</p> <p>6.6.1 Fault Tree Analysis 236</p> <p>6.6.2 Failure Modes, Effects, and Criticality Analysis 243</p> <p>6.7 Design for Reliability for Software Products 251</p> <p>6.8 Robust Design 252</p> <p>6.9 Design for Reliability Best Practices for Systems Engineers 257</p> <p>6.9.1 Reliability Requirements 257</p> <p>6.9.2 Reliability Assessment 258</p> <p>6.9.3 Reliability Testing 258</p> <p>6.9.4 DFR Practices 258</p> <p>6.10 Software Resources 258</p> <p>6.11 Chapter Summary 259</p> <p>6.12 Exercises 259</p> <p>References 260</p> <p><b>7. Reliability Engineering for High‐Consequence Systems 262</b></p> <p>7.1 What to Expect from this Chapter 262</p> <p>7.2 Definition and Examples of High‐Consequence Systems 262</p> <p>7.2.1 What is a High‐Consequence System? 262</p> <p>7.2.2 Examples of High‐Consequence Systems 263</p> <p>7.3 Reliability Requirements for High‐Consequence Systems 265</p> <p>7.4 Strategies for Meeting Reliability Requirements in High‐Consequence Systems 267</p> <p>7.4.1 Redundancy 267</p> <p>7.4.2 Network Resiliency 269</p> <p>7.4.3 Component Qualification and Certification 270</p> <p>7.4.4 Failure Isolation 277</p> <p>7.5 Current Best Practices in Reliability Engineering for High‐Consequence Systems 278</p> <p>7.6 Chapter Summary 279</p> <p>7.7 Exercises 280</p> <p>References 280</p> <p><b>8. Reliability Engineering for Services 282</b></p> <p>8.1 What to Expect from this Chapter 282</p> <p>8.2 Introduction 282</p> <p>8.2.1 On‐Demand Services 283</p> <p>8.2.2 Always‐On Services 284</p> <p>8.3 Service Functional Decomposition 285</p> <p>8.4 Service Failure Modes and Failure Mechanisms 286</p> <p>8.4.1 Introduction 286</p> <p>8.4.2 Service Failure Modes 288</p> <p>8.4.3 Service Failure Mechanisms 290</p> <p>8.5 Service Reliability Requirements 294</p> <p>8.5.1 Examples of Service Reliability Requirements 294</p> <p>8.5.2 Interpretation of Service Reliability Requirements 295</p> <p>8.6 Service‐Level Agreements 296</p> <p>8.7 SDI Reliability Requirements 297</p> <p>8.8 Design for Reliability Techniques for Services 298</p> <p>8.8.1 Service Fault Tree Analysis 299</p> <p>8.8.2 Service FME(C)A 299</p> <p>8.9 Current Best Practices in Service Reliability Engineering 299</p> <p>8.9.1 Set Reliability Requirements for the Service 299</p> <p>8.9.2 Determine Infrastructure Reliability Requirements from Service Reliability Requirements 300</p> <p>8.9.3 Monitor Achievement of Service Reliability Requirements 300</p> <p>8.10 Chapter Summary 300</p> <p>8.11 Exercises 301</p> <p>References 302</p> <p><b>9. Reliability Engineering for the Software Component of Systems and Services 303</b></p> <p>9.1 What to Expect from this Chapter 303</p> <p>9.2 Introduction 304</p> <p>9.3 Reliability Requirements for the Software Component of Systems and Services 305</p> <p>9.3.1 Allocation of System Reliability Requirements to the Software Component 305</p> <p>9.3.2 Reliability Requirements for Security and Other Novel Areas 308</p> <p>9.3.3 Operational Time and Calendar Time 309</p> <p>9.4 Reliability Modeling for Software 310</p> <p>9.4.1 Reliability Growth Modeling for the Sequence of Failure Times 310</p> <p>9.4.2 Other Approaches 312</p> <p>9.5 Software Failure Modes and Failure Mechanisms 312</p> <p>9.5.1 Software Failure Modes 312</p> <p>9.5.2 Software Failure Mechanisms 313</p> <p>9.6 Design for Reliability in Software 315</p> <p>9.6.1 Software Fault Tree Analysis 316</p> <p>9.6.2 Software FME(C)A 317</p> <p>9.6.3 Some Software Failure Prevention Strategies 317</p> <p>9.7 Current Best Practices in Reliability Engineering for Software 318</p> <p>9.7.1 Follow Good Software Engineering Practices 318</p> <p>9.7.2 Conduct Design Reviews Focused on Reliability 318</p> <p>9.7.3 Reuse Known Good Software 319</p> <p>9.7.4 Encourage a Prevention Mindset 319</p> <p>9.8 Chapter Summary 319</p> <p>9.9 Exercises 320</p> <p>References 320</p> <p><b>Part II Maintainability Engineering</b></p> <p><b>10. Maintainability Requirements 325</b></p> <p>10.1 What to Expect from this Chapter 325</p> <p>10.2 Maintainability for Systems Engineers 326</p> <p>10.2.1 Definitions 326</p> <p>10.2.2 System Maintenance Concept 327</p> <p>10.2.3 Use of Maintainability Effectiveness Criteria and Requirements 329</p> <p>10.2.4 Use of Preventive Maintenance 331</p> <p>10.2.5 Levels of Maintenance 331</p> <p>10.2.6 Organizational Responsibilities 332</p> <p>10.2.7 Design Features 333</p> <p>10.2.8 Maintenance Environment 333</p> <p>10.2.9 Warranties 334</p> <p>10.2.10 Preventive Maintenance and Corrective Maintenance 334</p> <p>10.2.11 Maintainability for Services 335</p> <p>10.3 Maintainability Effectiveness Criteria and Figures of Merit 337</p> <p>10.3.1 Products and Systems 337</p> <p>10.3.2 Services 340</p> <p>10.4 Examples of Maintainability Requirements 340</p> <p>10.5 Maintainability Modeling 342</p> <p>10.5.1 Duration and Labor‐Hour Effectiveness Criteria and Figures of Merit 342</p> <p>10.5.2 Count Effectiveness Criteria and Figures of Merit 344</p> <p>10.6 Interpreting and Verifying Maintainability Requirements 344</p> <p>10.6.1 Duration Effectiveness Criteria and Figures of Merit 344</p> <p>10.6.2 Count Effectiveness Criteria and Figures of Merit 346</p> <p>10.6.3 Cost and Labor‐Hour Effectiveness Criteria and Figures of Merit 348</p> <p>10.6.4 Three Availability Figures of Merit 348</p> <p>10.7 Maintainability Engineering for High‐Consequence Systems 349</p> <p>10.8 Current Best Practices in Maintainability Requirements Development 351</p> <p>10.8.1 Determine Customer Needs for Maintainability 351</p> <p>10.8.2 Balance Maintenance with Economics 351</p> <p>10.8.3 Use Quantitative Maintainability Modeling to Ensure Support for Maintainability Requirements 352</p> <p>10.8.4 Manage Maintainability by Fact 352</p> <p>10.9 Chapter Summary 353</p> <p>10.10 Exercises 354</p> <p>References 355</p> <p><b>11. Design for Maintainability 356</b></p> <p>11.1 What to Expect from this Chapter 356</p> <p>11.2 System or Service Maintenance Concept 356</p> <p>11.3 Maintainability Assessment 358</p> <p>11.3.1 Maintenance Functional Decomposition and Maintainability Block Diagram 358</p> <p>11.3.2 Quantitative Maintainability Modeling 360</p> <p>11.4 Design for Maintainability Techniques 362</p> <p>11.4.1 System Maintenance Concept 362</p> <p>11.4.2 Level of Repair Analysis 363</p> <p>11.4.3 Preventive Maintenance 369</p> <p>11.4.4 Reliability‐Centered Maintenance (RCM) 369</p> <p>11.5 Current Best Practices in Design for Maintainability 372</p> <p>11.5.1 Make a Deliberate Maintainability Plan 372</p> <p>11.5.2 Determine Which Design for Maintainability Techniques to Use 372</p> <p>11.5.3 Integration 373</p> <p>11.5.4 Organizational Factors 373</p> <p>11.6 Chapter Summary 374</p> <p>11.7 Exercises 374</p> <p>References 374</p> <p><b>Part III Supportability Engineering</b></p> <p><b>12. Support Requirements 379</b></p> <p>12.1 What to Expect from this Chapter 379</p> <p>12.2 Supportability for Systems Engineers 380</p> <p>12.2.1 Supportability as a System Property 380</p> <p>12.2.2 Factors Promoting Supportability 382</p> <p>12.2.3 Activities Included in Supportability Engineering 382</p> <p>12.2.4 Measuring and Monitoring Supportability 383</p> <p>12.2.5 Developing and Interpreting Support Requirements 383</p> <p>12.3 System or Service Support Concept 383</p> <p>12.4 Support Effectiveness Criteria and Figures of Merit 384</p> <p>12.5 Examples of Support Requirements 387</p> <p>12.5.1 Support Elapsed Time (Duration) Requirements 387</p> <p>12.5.2 Support Count Requirements 388</p> <p>12.6 Interpreting and Verifying Support Requirements 389</p> <p>12.7 Supportability Engineering for High-Consequence Systems 391</p> <p>12.8 Current Best Practices in Support Requirements Development 391</p> <p>12.8.1 Identify Support Needs 392</p> <p>12.8.2 Balance Support with Economics 393</p> <p>12.8.3 Use Quantitative Modeling to Promote Rationally Based Support Requirements 393</p> <p>12.8.4 Manage Supportability by Fact 394</p> <p>12.9 Chapter Summary 394</p> <p>12.10 Exercises 395</p> <p>References 395</p> <p><b>13. Design for Supportability 396</b></p> <p>13.1 What to Expect from this Chapter 396</p> <p>13.2 Supportability Assessment 397</p> <p>13.2.1 Quantitative Supportability Assessment 397</p> <p>13.2.2 Qualitative Supportability Assessment 400</p> <p>13.3 Implementation of Factors Promoting Supportability 401</p> <p>13.3.1 Diagnostics and Fault Location 401</p> <p>13.3.2 Tools and Equipment 402</p> <p>13.3.3 Documentation and Workflow Management 402</p> <p>13.3.4 Staff Training 403</p> <p>13.3.5 Layout of Repair Facility and Workstation Design 403</p> <p>13.3.6 Design of Maintenance Procedures 404</p> <p>13.3.7 Spare Parts, Repair Parts, and Consumables Inventory 404</p> <p>13.3.8 Transportation and Logistics 406</p> <p>13.4 Quantitative Design for Supportability Techniques 406</p> <p>13.4.1 Performance Analysis of a Maintenance Facility 406</p> <p>13.4.2 Staff Sizing: The Machine Servicing Model 412</p> <p>13.5 Current Best Practices in Design for Supportability 414</p> <p>13.5.1 Customer Needs and Supportability Requirements 414</p> <p>13.5.2 Team Integration 415</p> <p>13.5.3 Modeling and Optimization 415</p> <p>13.5.4 Continual Improvement 415</p> <p>13.6 Chapter Summary 416</p> <p>13.7 Exercises 416</p> <p>References 417</p> <p>Index 419</p>
<p><b>Michael Tortorella</b> is a Visiting Professor at RUTCOR (Rutgers Center for Operations Research) at Rutgers University, New Jersey, USA, and an Adjunct Professor of Systems Engineering at Stevens Institute of Technology, USA. He is the Founder and Managing Director of Assured Networks LLC, USA, a next-generation networks design, performance, and reliability consultancy. Tortorella was a Distinguished Member of Technical Staff at Bell Laboratories, USA, where he was recognized as a thought leader in design for reliability processes and technologies and network design and performance analysis. He holds the Ph. D. degree from Purdue University, Indiana, USA.
<p><b>FOCUSES ON THE CORE SYSTEMS ENGINEERING TASKS OF DEVELOPING, MANAGING, AND TRACKING REQUIREMENTS FOR RELIABILITY, MAINTAINABILITY, AND SUPPORTABILITY THAT ARE MOST LIKELY TO SATISFY CUSTOMERS AND LEAD TO SUCCESS FOR SUPPLIERS</b> <p>This book helps systems engineers lead the development of systems and services whose reliability, maintainability, and supportability meet and exceed the expectations of their customers and promote success and profit for their providers. Each of its three major divisions, one each for reliability, maintainability, and supportability, tells how to create good requirements in the area and how to fulfill the requirements by using proactive design techniques. Each section also contains material on modeling and optimization, and statistical techniques needed to validate the achievement of requirements through collection and analysis of data from operating systems and services. Emphasis is placed on correct use of language as an enabler of clear communication across the entire stakeholder community. In short, the book takes the mystery out of designing systems and services to reliability, maintainability, and supportability standards. <p>To support the creation of requirements that are focused on customer needs, unambiguous, easily understood by all stakeholders, and verifiable, the book contains: <ul> <li> "Requirements Tips" that harmonize the structure and content of requirements in cases of possible confusion</li> <li> "Modeling Tips" that suggest fruitful approaches to understanding sustainability in quantitative terms, and</li> <li> "Language Tips" that help clarify potentially confusing or ambiguous terminology used by various stakeholders in the systems engineering, design, management, and executive worlds</li> </ul> <p><i>Reliability, Maintainability, and Supportability</i> is a reference for graduate students and working systems engineers who hope to learn how to be effective sustainability advocates for customers while supporting key design activities and promoting sensible economic outcomes.

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