Reliability HotWire: eMagazine for the Reliability Professional
In this issue:

Issue 29, July 2003

*Hot Topics
*Reliability Basics
*Tool Tips
*Latest Software Updates
*Hot News
*Contribute to HotWire

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Hot Topics  
Using the Fault Tree Method to Analyze Dependent and Independent Failure Modes 
In May's issue of the HotWire, a method was presented for modeling dependent and independent failure modes using a reliability block diagram. In this month's issue, we will revisit this topic. However, instead of using the reliability block diagram approach, the fault tree method will be incorporated utilizing BlockSim 6 FTI.

To read more, see 

Reliability Basics  

Using Pools and Crews in System Analysis (Part I)

In order to make system analysis more realistic, you may wish to consider additional sources of delay times in the analysis or study the effect of limited resources. As an example, you can utilize a repair distribution to identify how long it takes to restore a component. The factors that you choose to consider in this time may include the time it takes to complete the repair and/or the time it takes to obtain a crew, spare part, etc. While all of these factors may be included in the repair duration, optimized usage of these resources can only be achieved if the resources are studied individually and their dependencies are identified.

In Part I of this article, we will examine the utilization of crews in the system analysis. In Part II, which will be presented in next month's issue of the Hotwire, we will deal with spare part pools as well as including pools and crews together.

To read more, see 

Tool Tips  
  • What revision tracking methods are available in Xfmea?

  • Have additional subjects been added to ReliaSoft's training seminars?

To read more, see 

Latest Software Updates
New service releases are now available for BlockSim 6 (SR 6.0.7), Weibull++ 6 (SR 6.0.11), Weibull++ 6 MT (SR 6.0.11/6.1.7) and Xfmea (SR 1.0.4). To determine the compile revision of the application on your computer, select About from the Help menu.


Application Date Created Version
BlockSim 6
BlockSim 6 6/24/03 6.0.7
BlockSim 6 Update N/A SR 6.0.7
Weibull++ 6
Weibull++ 6 6/24/03 6.0.11
Weibull++ 6 Update N/A SR 6.0.11
Weibull++ 6 MT 6/24/03 6.0.11/6.1.7
Weibull++ 6 MT Update N/A SR 6.0.11/6.1.7
Xfmea 6/26/03 1.0.4
Xfmea Update N/A SR 1.0.4
Hot News
* Announcing the Xfmea Competitive Upgrade Program - To ease your transition to Xfmea, our competitive upgrade pricing lets you step up to Xfmea for $695 (65% off the single user price), which may be less than the upgrade costs of your existing software. Available for the next two months, this offer gives you the advantage of a comprehensive FMEA package designed to meet your current and future needs at a minimal cost. For pricing and eligibility, please visit
* Pre-Release Pricing on BlockSim FTI Edition - BlockSim FTI Edition is a complete and integrated RBD and Fault Tree package. You can use Fault Trees, RBDs or combinations of both. With the FTI Edition you get the same powerful analyses capabilities available in BlockSim 6 Standard, regardless of how you choose to represent your system, erasing the distinction between Fault Trees and Reliability Block Diagrams. The FTI Edition will be available August 2003. You can order FTI before August 15th, 2003 for the same price as BlockSim Standard ($2495) or upgrade to the FTI Edition from BlockSim Standard for only $395.00. For more information, please visit:
* QTMS Web Site Enhancement - Do you want to learn more about Failure Reporting, Analysis and Corrective Action Systems (FRACAS)? The new enhancements to our QTMS Web site now offer readers incredible detail and insight into this complex, yet efficient, management process. A downloadable PowerPoint presentation is also available.
* Reliability Workshop in Malaysia - DACQ Technologies Pte Ltd and Maintain-IT (two of ReliaSoft's international distributors) have teamed up to offer a 2-day reliability workshop in Kuala Lumpur, Malaysia on August 7-8, 2003. More information is available on the DACQ Technologies and Maintain-IT websites.
* Xfmea Enhancements - Registered Xfmea users continue to benefit from added features without paying more. Here are some of the additions contained within the latest free minor software update:
- Added the ability to automatically "promote" and "demote" items in the System hierarchy, as well as the ability to automatically renumber the items in the System hierarchy based on their positions in the hierarchy.
- Added the ability to highlight records based on priority.
- Added the ability to view records by type within the Project window. For example, you can display a list of all causes and sort them by occurrence rating or RPN, display a list of all actions and sort them by due date or person responsible, etc.
* Chinese Seminar - Dr. Wendai Wang will be teaching ReliaSoft's MSMT Training Seminar in Chinese October 27 - 31, 2003 in Shanghai, China. Dr. Wang is a senior professional reliability engineer at the General Electric Corporate Research & Development Center. He received his B.S. and M.S. from Shanghai Jiaotong University and his Ph.D. from the University of Arizona. He has more than 15 years teaching and working experience in reliability and maintainability engineering. For more information about Dr. Wang and the upcoming seminar, please visit:
* ReliaSoft Web Store now available - You can now place orders for ReliaSoft's software through our newly created Web store. This secure Web site is available at
* Calendar of Public Training Events:


Master the Subject, Master the Tools Training Seminar (MSMT) - Life data analysis, accelerated life data analysis and system analysis: August 18 - 22, 2003 in San Diego, CA. For more information, see
Advanced System Analysis and BlockSim Training Seminar - September 22 - 24, 2003 in Tucson, AZ. An intensive theoretical and hands-on course (utilizing BlockSim) which exposes the attendee to the advanced concepts, principles and requirements for performing detailed system reliability, maintainability, availability and related analyses. For a detailed course overview, see

FMEA/FMECA Analysis and Xfmea Training Seminar - September 25 - 26, 2003 in Tucson, AZ. This course offers an overview of FMEA/FMECA analysis procedures with emphasis on the use of the Xfmea software. For a detailed course overview, see
International Seminar at the Island of Cyprus The Crossroads of Europe, Asia and Africa  - Master the Subject, Master the Tools Training Seminar (MSMT) - Life data analysis, accelerated life data analysis and system analysis: October 6 - 10, 2003 in Larnaca, Cyprus. This seminar is in English. For more information, see
China - Master the Subject, Master the Tools Training Seminar (MSMT) - Life data analysis, accelerated life data analysis and system analysis: October 27 - 31, 2003 in Shanghai, China. This seminar is primarily in Chinese. For more information, see

Contribute to HotWire

Contributions Welcomed
As always, your feedback and contributions are appreciated. ReliaSoft is able to provide the most user-friendly reliability software packages and support because we listen to our customers. This applies to our newsletters and publications as well. We welcome any suggestions or contributions you may have for Reliability HotWire. If you have a topic or article that you think would be useful to the readers of Reliability HotWire, feel free to contact us.

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