An Introduction to ISO 15926 November 2011 - iRINGToday

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Of course, in the real world things seldom work out so nicely. Even in the rather small scope of a line list (where there the lexical scope is only a dozen or so terms) there is usually ambiguity. For instance, in Figure 1.6 two columns have names that do not match. One of them, tag_no in the engineering application, is most probably equivalent to the id column in the construction application. But what about the column cl in the construction application? For that matter, what does temp really mean? Could it mean “Temporary”? It is possible. It is not unheard of to have temporary lines erected for commissioning, which are then removed after a plant has been put in production. In addition, if you are being a bit paranoid (and if you have to sign off on the actual hydrostatic test pressure you better be at least a bit paranoid) what do you make of press? It almost certainly means “pressure,” but what type of pressure? • Operating pressure? • Maximum allowable working pressure? • Design pressure? Engineering Application Line Table tag_no dia len temp press ifc ? ? id dia cl temp press ifc Line Table ? ? Construction Application Fig 1.6 Real-life situation. If you have to specify the hydrostatic test pressure, you have to know for sure. The reality is that we are inferring everything, based on context. The only solution is to start digging. Fortunately, the lexical scope of a line list is only a couple dozen terms. To determine if temp means “temperature” or “temporary” you will have to look at a few rows of data. If the data values are y/n, or 0/1, it points to “temporary.” However, if the data values are numbers in the range of, say, –50 to 1,500 it probably means “temperature.” The column name press will take a bit longer. You will have to look for clues in other documents and use your engineering judgment to determine which type of pressure it is. You may have to contact the design engineer. What looked fairly simple just a while ago is looking a bit more complex. CHAPTER 1 20
There is always an easy solution to every human problem— neat, plausible, and wrong. 5 If you only have to import the data once, one option is to simply copy the information column by column. However, if you have to import information from the engineering application several times you will want to have someone configure a custom mapping application. In Figure 1.7, someone has examined the data coming from the engineering application and determined which columns matched those of your construction application. In software development jargon, they have “mapped the databases together.” The red box represents software that uses the map to transfer information from the design application to the construction application. (An interesting side note is that you may not have to actually transfer very much. For instance, if you knew that both applications expect pipe sizes based on ASME B36.10M you would only have to transfer numerical digits—such as 6 or 12.) Custom Map Engineering Application Line Table tag_no dia len temp press ifc tag_no dia len temp press ifc id dia cl temp press ifc id dia cl temp press ifc Line Table Construction Application Fig 1.7 A custom solution. So far in this simple example, writing the mapping software would be relatively easy. But the real world is usually a bit more complex. One common problem, from the point of view of a lonely construction engineer on a remote project a long way from help, is that the data is often mangled across many fields. Take, for example, a “simple” line number such as what might be represented by the column tag_no. As a construction engineer, you are likely to look at a line number as “a label representing the name of this run of pipe, from here to there.” You expect the line number to be one string of text, something like: Line Number 150-HCL-250-1C200-35 However, the design engineer needs to be able to sort and filter on the pieces. Her idea of a line number probably looks more like this: 5. H. L. Mencken, 1917 (Variously attributed to Albert Einstein, Winston Churchill and others.) CHAPTER 1 21
Page 1 and 2: ELEMENT 8 WORKFORCE & TRAINING An I
Page 3 and 4: ACKNOWLEDGMENTS Fiatech has produce
Page 5 and 6: TABLE OF CONTENTS INTRODUCTION 1 In
Page 7 and 8: INTRODUCTION Introduction to ISO 15
Page 9 and 10: • The owner will open the link to
Page 11 and 12: that a large proportion of plant in
Page 13 and 14: Although it describes some complex
Page 15 and 16: who need to exchange information al
Page 17 and 18: Open-source and commercial tools ex
Page 19 and 20: what it means in information exchan
Page 21 and 22: No one really liked this (as in “
Page 23 and 24: The Data Sheet Problem Consider a m
Page 25: Let’s say you are an engineer wor
Page 29 and 30: pair of applications. Conceivably,
Page 31 and 32: Map to Common Dictionary Map from C
Page 33 and 34: application, he simply used the app
Page 35 and 36: zation will use it to further their
Page 37 and 38: EPC 1 F F Const 3 Fig 1.14 Everyone
Page 39 and 40: der will have to fill in the remain
Page 41 and 42: Some owners these days make turnove
Page 43 and 44: Previous project information stored
Page 45 and 46: V 03 EPC 1 ISO 15926 Owner Const 2
Page 47 and 48: How we use the internet to find inf
Page 49 and 50: Suppose one such friend is Bill, wh
Page 51 and 52: “I have data I want to keep for d
Page 53 and 54: markup tags freed document creators
Page 55 and 56: minimize the variability of parts b
Page 57 and 58: change drawings with each other and
Page 59 and 60: 1980 1990 2000 2010 NIST IGES IGES
Page 61 and 62: 1980 1990 2000 2010 This AP is a me
Page 63 and 64: were themselves made up of other co
Page 65 and 66: The Japan Electric Measuring Instru
Page 67 and 68: useful today as a starting point fo
Page 69 and 70: APs by their nature overlap with ea
Page 71 and 72: EPISTLE’s idea was that if you br
Page 73 and 74: For planning, Fiatech developed wha
Page 75 and 76: can be read by another. A translato
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plug to integrate their products).
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Procurement A Construction A Engine
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Part 2: Data Model Fig. 3.6 The par
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in French, cook in German, type in
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y pulling in the individual parts a
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Where it gets complicated is differ
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many engineering standards for vari
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15926 so that it can be translated
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ably 1:00 in the morning. Walking t
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But what if we told you that your o
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Part 9: Implementation Methods for
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Other Parts of ISO 15926 Astute rea
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“Do you retain any information of
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When new terms are introduced, you
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you are using them correctly and wi
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from the structure of the data in t
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In turn, you program your cell phon
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CHAPTER 4: CURRENT EVENTS IN THE WO
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umes on an asset. POSC Caesar will
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Fig. 4.1 O&M reference information
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• There will be many levels of ce
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adopting ISO 15926 by highlighting
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Automating Equipment Information Ex
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proof-of-concept software that will
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two applications. (Note here that w
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Tools When the project is ready for
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have already been written and are a
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Part 2 Formal name: Data Model Publ
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for a way to test systems to see ho
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Functional capability Semantic Prec
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URIs Resolvable in Shared Reference
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Functional Capability This category
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Roles Fig. C.1 Figure out each exch
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ACME EMCA Table Name Column Name Ta
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tremely improbable that a valve wil
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number but in a separate table base
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wej The nominal pressure rating for
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drawing_no_piping_ortho maintenance
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and may find that some terms confli
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SEQUENCE NUMBER PR3 1.10 VALVE TYPE
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New Role Fig. C.16 Use ISO 15926-4
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• EMCA receives the neutral file
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Class: The URI of the Class Pressur
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lndirectPropertyScaleReal Individua
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Examples In the search box, search
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Hans Teijgeler has been influential
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Other Organizations MIMOSA http://w
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ver must often operate on what is l
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GLOSSARY OF CONCEPTS There are alre
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meant, ‘there’s a nice knock-do
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If you are a Start Trek fan and hav
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In this example, you reduce the Cor
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3925 West Braker Lane (R4500) Austi
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An Introduction to ISO 15926 November 2011 - iRINGToday

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