Examples: Linear equipment structures - HxGN EAM - Version 11.07.01 - Feature Briefs - Hexagon

HxGN EAM Linear Equipment

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HxGN EAM
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Feature Briefs
HxGN EAM Version
11.7.1

The equipment structure in HxGN EAM offers comprehensive capabilities consisting of parent – child relationship between different equipment types. Equipment types are broken down into Systems, Positions (functions), and Assets. A typical equipment structure consists of one parent with one or more children on the next lower level. The number of levels in the structure is infinite.

The equipment type System is the exception because it supports multiple parents for one child.

Cost information and work order history rolls up from the child to the parent.

This works very well for point equipment, but not as well for linear equipment. For example, assume there is a mile-long rail track downtown. The Red line and the Blue line are both light rail services but follow a different route. However, both lines share the mile-long track downtown. Dollars spent on the downtown track roll up to both lines. These are the two issues:

  • It is not clear where the costs on the Red or the Blue line are located. Once the costs roll up, the location of the costs on the downtown track are lost.

  • Both parents get all the costs attached. So, the $100 repair is now associated to both the Blue and the Red line. It was not possible to split the costs evenly so that it is $50 for each line.

Therefore, for linear equipment you must also define where the child is located on the parent equipment on the Linear References tab of the equipment screens. Now, if you define that the downtown rail track is located on the Blue line from mile 6 to 7 and on the Red line from mile 8 to 9, the work order costs on the rail track will be allocated to mile 6 to7 on the Red line and to mile 8 to 9 on the Blue line. Also, consider the proper use of the Linear Cost Weight on both lines if you want to distribute the costs between both lines. See above for an explanation of this field, which is only available on the Systems screen.

Note that for Routes and for Segments this is implicit. You do not have to create another record on the Linear References tab. The definition on the Routes tab and the Segments tab is sufficient.

Below are examples of potential structures:

All examples show a three-level hierarchical structure with a System on top, a Position in the middle, and an Asset at the bottom. There is no meaning to the choice of the equipment types in these examples. The same would be applicable if they were all assets, all positions, all systems, or any other variation of equipment types.

Whatever you do, you must always create the equipment. Without that structure, costs and history will never roll up. In all examples below the assumption will be that that structure is present and that you know how to establish this structure.

For linear equipment, the extra structure component needed is the definition of where the child equipment is located relative to its parent. That definition is done on the Linear References tab of the parent equipment.

Example 1

The above example describes a common scenario where the child is shorter than the parent. In this scenario, multiple children placed next to each other together make up the total length of the parent equipment.

On the Linear References tab of the parent equipment P4 enter:

  • Type

Related Equipment

  • Equipment

A4

  • From Point

21000

  • To Point

36000

On the Linear References tab of the parent equipment S4 enter:

  • Type

Related Equipment

  • Equipment

P4

  • From Point

39000

  • To Point

89000

Example 2

The above example describes a scenario where the child is longer than the parent. The parent starts at a location somewhere on the child.

On the Linear References tab of the parent equipment P5 enter:

  • Type

Related Equipment

  • Equipment

A5

  • From Point

-2000

  • To Point

10000 (The child is still 2000 longer, but you hit the maximum on the parent)

On the Linear References tab of the parent equipment S5 enter:

  • Type

Related Equipment

  • Equipment

P5

  • From Point

-3000

  • To Point

5000

Example 3

On the Linear References tab of the parent equipment P6 enter:

  • Type

Related Equipment

  • Equipment

A6

  • From Point

-2000

  • To Point

13000

On the Linear References tab of the parent equipment S6 enter:

  • Type

Related Equipment

  • Equipment

P6

  • From Point

4000

  • To Point

5000

Example 4

On the Linear References tab of the parent equipment P7 enter:

  • Type

Related Equipment

  • Equipment

A7

  • From Point

2000

  • To Point

10000

On the Linear References tab of the parent equipment S7 enter:

  • Type

Related Equipment

  • Equipment

P7

  • From Point

-7000

  • To Point

3000

What happens if you do not define the relationship between a parent and a child on the Linear References tab and only define the parent-child structure, and do not define the Linear Cost Weight? Nothing will happen. The system will simply roll up costs to the parent without knowing the location of these costs, and System parents will all get the full costs associated.