Related Topics and Links:

Load Sharing Containers

Reliability Block Diagrams (RBDs)

Block Properties

Contained Load Sharing Blocks

Add a contained block to a container by selecting the container and then choosing Diagram > Blocks > Add Block.

The properties available for configuring a contained load sharing block will vary depending on whether it is in an analytical RBD or a simulation RBD. In addition to the common block properties, you will need to describe how the block behaves.

The first step is to assign a URD for the block. As explained in the topic on standard blocks, the URD uses a failure model to describe the block's reliability characteristics; for blocks in simulation diagrams, the corrective task and/or scheduled tasks associated with the URD are also applied to the block.

What's Changed? Version 7 required a life-stress relationship for load sharing configurations and based the re-calculation of load after block failure on that relationship; subsequent versions calculate load using the weight proportionality factor as a multiplier. Because of this, if you convert a Version 7 diagram that uses load sharing containers, you will need to manually configure the contained load sharing blocks after conversion.

The following options may be available for contained load sharing blocks in both analytical and simulation diagrams:

When you are working with a simulation diagram, the following options are also available:

Once the block is configured, you can click the Optimum Replacement icon in the Properties area to open the Optimum Replacement window for the current block; this window allows you to determine the most cost-effective time to replace the component based on costs for planned (i.e., preventive) and unplanned (i.e., corrective) replacement.

 

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