Reliability, Maintainability, and Supportability
Best Practices for Systems Engineers
Wiley Series in Systems Engineering and Management
1. Edition March 2015
464 Pages, Hardcover
Wiley & Sons Ltd
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
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
* Contains "Language Tips" to help systems engineers learn the different languages spoken by specialists and non-specialists in the sustainability disciplines
* Provides exercises in each chapter, allowing the reader to try out some of the ideas and procedures presented in the chapter
* Delivers end-of-chapter summaries of the current reliability, maintainability, and supportability engineering best practices for systems engineers
Reliability, Maintainability, and Supportability 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.
Acknowledgments xxii
Part I Reliability Engineering
1. Systems Engineering and the Sustainability Disciplines 3
1.1 Purpose of this Book 3
1.2 Goals 8
1.3 Scope 10
1.4 Audience 12
1.5 Getting Started 14
1.6 Key Success Factors for Systems Engineers in Reliability, Maintainability, and Supportability Engineering 15
1.7 Organizing a Course Using this Book 17
1.8 Chapter Summary 19
References 19
2. Reliability Requirements 20
2.1 What to Expect from this Chapter 20
2.2 Reliability for Systems Engineers 21
2.3 Reliability, Maintainability, and Supportability are Mutually Reinforcing 36
2.4 The Structure of Reliability Requirements 41
2.5 Examples of Reliability Requirements 46
2.6 Interpretation of Reliability Requirements 53
2.7 Some Additional Figures of Merit 65
2.8 Current Best Practices in Developing Reliability Requirements 73
2.9 Chapter Summary 79
2.10 Exercises 81
References 82
3. Reliability Modeling for Systems Engineers 84
3.1 What to Expect from this Chapter 84
3.2 Introduction 85
3.3 Reliability Effectiveness Criteria and Figures of Merit for Nonmaintained Units 87
3.4 Ensembles of Nonmaintained Components 120
3.5 Reliability Modeling Best Practices for Systems Engineers 146
3.6 Chapter Summary 146
3.7 Exercises 146
References 149
4. Reliability Modeling for Systems Engineers 153
4.1 What to Expect from this Chapter? 153
4.2 Introduction 154
4.3 Reliability Effectiveness Criteria and Figures of Merit for Maintained Systems 154
4.4 Maintained System Reliability Models 162
4.5 Stability of Reliability Models 181
4.6 Software Resources 182
4.7 Reliability Modeling Best Practices for Systems Engineers 182
4.8 Chapter Summary 186
4.9 Exercises 187
References 188
5. Comparing Predicted and Realized Reliability with Requirements 190
5.1 What to Expect from this Chapter 190
5.2 Introduction 190
5.3 Effectiveness Criteria, Figures of Merit, Metrics, and Predictions 191
5.4 Statistical Comparison Overview 194
5.5 Statistical Comparison Techniques 199
5.6 Failure Reporting and Corrective Action System 212
5.7 Reliability Testing 214
5.8 Best Practices in Reliability Requirements Comparisons 216
5.9 Chapter Summary 216
5.10 Exercises 217
References 218
6. Design for Reliability 219
6.1 What to Expect from this Chapter 219
6.2 Introduction 220
6.3 Techniques for Reliability Assessment 221
6.4 The Design for Reliability Process 224
6.5 Hardware Design for Reliability 228
6.6 Qualitative Design for Reliability Techniques 236
6.7 Design for Reliability for Software Products 251
6.8 Robust Design 252
6.9 Design for Reliability Best Practices for Systems Engineers 257
6.10 Software Resources 258
6.11 Chapter Summary 259
6.12 Exercises 259
References 260
7. Reliability Engineering for High?]Consequence Systems 262
7.1 What to Expect from this Chapter 262
7.2 Definition and Examples of High?]Consequence Systems 262
7.3 Reliability Requirements for High?]Consequence Systems 265
7.4 Strategies for Meeting Reliability Requirements in High?]Consequence Systems 267
7.5 Current Best Practices in Reliability Engineering for High?]Consequence Systems 278
7.6 Chapter Summary 279
7.7 Exercises 280
References 280
8. Reliability Engineering for Services 282
8.1 What to Expect from this Chapter 282
8.2 Introduction 282
8.3 Service Functional Decomposition 285
8.4 Service Failure Modes and Failure Mechanisms 286
8.5 Service Reliability Requirements 294
8.6 Service?]Level Agreements 296
8.7 SDI Reliability Requirements 297
8.8 Design for Reliability Techniques for Services 298
8.9 Current Best Practices in Service Reliability Engineering 299
8.10 Chapter Summary 300
8.11 Exercises 301
References 302
9. Reliability Engineering for the Software Component of Systems and Services 303
9.1 What to Expect from this Chapter 303
9.2 Introduction 304
9.3 Reliability Requirements for the Software Component of Systems and Services 305
9.4 Reliability Modeling for Software 310
9.5 Software Failure Modes and Failure Mechanisms 312
9.6 Design for Reliability in Software 315
9.7 Current Best Practices in Reliability Engineering for Software 318
9.8 Chapter Summary 319
9.9 Exercises 320
References 320
Part II Maintainability Engineering
10. Maintainability Requirements 325
10.1 What to Expect from this Chapter 325
10.2 Maintainability for Systems Engineers 326
10.3 Maintainability Effectiveness Criteria and Figures of Merit 337
10.4 Examples of Maintainability Requirements 340
10.5 Maintainability Modeling 342
10.6 Interpreting and Verifying Maintainability Requirements 344
10.7 Maintainability Engineering for High?]Consequence Systems 349
10.8 Current Best Practices in Maintainability Requirements Development 351
10.9 Chapter Summary 353
10.10 Exercises 354
References 355
11. Design for Maintainability 356
11.1 What to Expect from this Chapter 356
11.2 System or Service Maintenance Concept 356
11.3 Maintainability Assessment 358
11.4 Design for Maintainability Techniques 362
11.5 Current Best Practices in Design for Maintainability 372
11.6 Chapter Summary 374
11.7 Exercises 374
References 374
Part III Supportability Engineering
12. Support Requirements 379
12.1 What to Expect from this Chapter 379
12.2 Supportability for Systems Engineers 380
12.3 System or Service Support Concept 383
12.4 Support Effectiveness Criteria and Figures of Merit 384
12.5 Examples of Support Requirements 387
12.6 Interpreting and Verifying Support Requirements 389
12.7 Supportability Engineering for High-Consequence Systems 391
12.8 Current Best Practices in Support Requirements Development 391
12.9 Chapter Summary 394
12.10 Exercises 395
References 395
13. Design for Supportability 396
13.1 What to Expect from this Chapter 396
13.2 Supportability Assessment 397
13.3 Implementation of Factors Promoting Supportability 401
13.4 Quantitative Design for Supportability Techniques 406
13.5 Current Best Practices in Design for Supportability 414
13.6 Chapter Summary 416
13.7 Exercises 416
References 417
Index 419
