An Introduction to ISO 15926 November 2011 - iRINGToday
An Introduction to ISO 15926 November 2011 - iRINGToday
An Introduction to ISO 15926 November 2011 - iRINGToday
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Cus<strong>to</strong>m Map<br />
Line Number<br />
Area Fluid Code Nom Dia Service Class Insulation Thk<br />
150 HCL 250 1C200 35<br />
In fact, it may not even be that nice. It could be something like this:<br />
Area WBS<br />
Service<br />
Class<br />
Nom Dia Fluid<br />
Code<br />
Testing Insulation Thk<br />
150 7395-132 1C200 250 HCL 3 35<br />
Many engineering procurement and construction (EPC) contrac<strong>to</strong>rs have proprietary work<br />
processes for plant design supported with cus<strong>to</strong>m software. It is quite possible that the database<br />
the design engineer used <strong>to</strong> create your line list has the columns in a different order, and<br />
with other columns mixed in. The line list sent <strong>to</strong> you could have been created with reportwriting<br />
software that had been configured <strong>to</strong> select just the right columns and put them in<br />
just the correct order just for your project. This added complication may not reveal itself until<br />
you get “under the hood” and look at the database dump.<br />
If you are the one transferring information from one application <strong>to</strong> another, it is up <strong>to</strong> you <strong>to</strong><br />
figure out all the pieces and <strong>to</strong> put Humpty Dumpty back <strong>to</strong>gether for your construction application.<br />
It is a good thing that the lexical scope of a line list is only a few dozen terms!<br />
A Confederation of Applications<br />
If linking the first two applications <strong>to</strong>gether works out well, you may be tempted <strong>to</strong> link in another<br />
one. Figure 1.8 shows how the engineering application might be mapped <strong>to</strong> a procurement<br />
application with a second cus<strong>to</strong>m database map.<br />
Engineering Application<br />
Line Table<br />
tag_no dia len temp press ifc<br />
tag_no dia len temp press ifc<br />
id dia cl temp press ifc<br />
id dia cl temp press ifc<br />
Line Table<br />
Construction Application<br />
Cus<strong>to</strong>m Map<br />
tag_no dia len temp press ifc<br />
tag dia cl ifc<br />
tag dia len code price ifc<br />
Line Table<br />
Procurement Application<br />
Fig 1.8 A confederation of applications.<br />
This is the beginning of what might be called a “confederation of applications” whereby many<br />
applications get information from each other, with cus<strong>to</strong>m-built database maps between each<br />
CHAPTER 1<br />
22