Reliability Prediction
Many government purchasing contracts for Military hardware require a MIL-HDBK-217F Prediction report for inclusion with the submitted proposal. We are fully ITAR compliant and will put the necessary documentation in place before work proceeds. We hold certification under the United States/Canada Joint Certification Program (JCP).
Underwriter’s Laboratories (UL) requires Computational Investigation and Demonstrated methods which prescribe using MIL-HDBK-217F Parts Stress Method to determine the failure rate of electronic equipment.
The Food and Drug Administration (FDA) require a good faith Regulatory Due Diligence effort to determine the Reliability of Medical devices. A MIL-HDBK-217F or Telcordia SR-332 prediction report is an excellent low cost way of satisfying this requirement.
Prediction Standards we support
- MIL-HDBK-217F
- Bellcore TR-332, Issue 6
- Telcordia SR-332, Issue 1
- Telcordia SR-332, Issue 2
- Telcordia SR-332, Issue 3
- NSWC-94/L07
- NSWC-94/L11
- IEEE Gold Book
- FIDES
- Siemens SN 2950
- IEC TR 62380
Systems Analysis
A Reliability Block Diagram (RBD) is a graphical representation of the components of the system and how they are reliability-wise related. The diagram represents the functioning state (i.e., success or failure) of the system in terms of the functioning states of its components. For example, a simple series configuration indicates that all of the components must operate for the system to operate, a simple parallel configuration indicates that at least one of the components must operate, and so on. When you define the reliability characteristics of each component, you can use software to calculate the reliability function for the entire system and obtain a wide variety of system reliability analysis results, including the ability to identify critical components and calculate the optimum reliability allocation strategy to meet a system reliability goal. Likewise, when you also define the maintainability characteristics of the components in the RBD, you can use software to simulate the operation of the system and obtain an array of system maintainability and availability results that will help you to make decisions about the design and/or operation of the system.
Component Derating
Derating is a technique employed in electrical and electronic devices, where the devices are operated at less than their rated maximum specifications. This is done in order to reduce the rate at which they deteriorate over time and the reliability and life expectancy are improved. Therefore, derating is a practical means of reducing failures and is supported by much literature including multiple standards as well as suppliers of components.
Conceptually if a component or system is operated under its design limit, it will be more reliable than if it is operated at or above the design limit. While a component may be specified to operate at high voltage and high temperature, applying those conditions simultaneously would probably be worse than applying either one or the other independently. Derating increases the margin of safety between part design limits and applied stresses, thereby providing extra protection for the part. Also given that reactions are known to proceed at higher speeds at higher temperatures (Arrhenius), we would expect reduced degradation, and hence extended life, by running a component at lower than its maximum temperature.
Since 1993
Your Needs
Many government purchasing contracts for Military hardware require a MIL-HDBK-217F Prediction report for inclusion with the submitted proposal. We are fully ITAR compliant and will put the necessary documentation in place before work proceeds.
Underwriter’s Laboratories (UL) requires Computational Investigation and Demonstrated methods which prescribe using MIL-HDBK-217F Parts Stress Method to determine the failure rate of electronic equipment.
The Food and Drug Administration (FDA) require a good faith Regulatory Due Diligence effort to determine the Reliability of Medical devices. A MIL-HDBK-217F or Telcordia SR-332 prediction report is an excellent low cost way of satisfying this requirement.
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