A project deliverable is first created as an assembly structure. Items in
an assembly structure are usually shown in the order, as they are physically
connected to each other. The assembly structure is important and the main structure
for project deliverables. The assembly structure enables calculations of required
quantities, required dates and planned costs. Material can be reserved to parent
items, by using the project deliverables assembly structure. The assembly structure
is also the structure for which the material plan is created and additional
plans, such as estimate, work and shipment. The assembly structure is created
when entering components in Project Deliverables Design/Components.
The project deliverables assembly structure is also created when copied from
PDM, copied from product structure and when copied from an item configuration.
The assembly structure is important, but sometimes there is a need to
show items in other types of structures. These additional structures can be
defined by using navigation models. Navigational models create an alternative
way of explaining a project deliverable structure. Navigational models consist
of attribute values and could have names like facility, part of facility, building,
room, area, segment, ship, and sections etc. These navigation models together
with its attribute values are manually created. What attributes values to create,
differs between industry standards, company procedures, engineering disciplines
and the purpose of the model. In a navigation model, project deliverable items
are grouped together by using attribute values. For example, group project deliverable
items together, by using attributes values such as: facility, part of facility,
building, floor level, room, area, segment, ship, sections, to create a location
structure.
A detailed example can be like this: In
ship building industry, ship hull is created by welding pre-fabricated sections
together. Entire multi-deck segments of the hull or superstructure will be built
elsewhere in the yard, transported to the building dock or slipway, then lifted
into place. This is known as "block construction". The most modern
shipyards pre-install equipment, pipes, electrical cables, and any other components
within each section, to minimize the effort needed to assemble or install components
deep within the hull, once it is welded together. At this stage, section act
as a temporary location. A navigation model with attribute values for sections
can be created. Steel, equipment, pipes, electrical cables and any other components
can now be connected to sections.
Once the Hull is set up, actual locations
like top deck, fore deck, main deck, control room, engine room start to exist.
Equipment, pipes, electrical cables and any other component can now be connected
to new attribute values like engine room, emergency generator and control room
in a new navigation model. This structure is now used for the commissioning,
operation and maintenance. The structure of the navigation model and connected
components can now be copied to Asset Design and Maintenance
(Equipment).
The temporary model for the pre-fabrication of sections and the model for the operation and maintenance can coexist. There is no limit in how many navigation models a project deliverable structure can be connected to.
Navigation model - Created in three steps:
Navigation model - Examples
| Temporary location structure to show the prefabrication of sections during the construction phase | |
| Attribute values | Deliverable items and components are connected to attribute values |
| Section 1 | Pre-installed equipment, pipes, electrical cables, and any other components in section 1. |
| Section 2 | Pre-installed equipment, pipes, electrical cables, and any other components in section 2. |
| Section 3 | Pre-installed equipment, pipes, electrical cables, and any other components in section 3. |
| Final location structure for the operation and maintenance phase | |
| Attribute values | Deliverable items and components are connected to attribute values |
| Engine room | Equipment, pipes, electrical cables, and any other components in the engine room. |
| Main deck | Equipment, pipes, electrical cables, and any other components on the main deck |
| Control room | Equipment, pipes, electrical cables, and any other components in the control room. |
Navigation model - Templates
Navigation Model templates provide an easy way to create navigation models. A navigation model can also be saved as a template.
Navigation model - Copy to Asset Design and Equipment
A complete navigation model with attribute values, deliverable items and components can be copied to Asset Design and Equipment. A navigation model can be copied as a function structure to Equipment. A navigation model can be copied as a function, location, process, pipe system, from/to and electrical structure to Asset Design. These structures can then be transferred two-ways between Asset Design and Equipment.