CAD Manual I

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Computer Aided Design (CAD) Reference Manual Part I

ITER

ITER

COMPUTER AIDED DESIGN

(CAD)

REFERENCE MANUAL

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Preface

This CAD manual is split into four parts as follows:

Part I. To clarify how the ITER CAD work is managed and to explain access to theCAD drawings.

Part II. To describe the CAD standard practices required for the ITER project.

Part III. To explain access at the JWSs to the CAD models and drawings. To giveinstruction in usage of the ITER Integrated Model Management System(IMMS).

Part IV. The appendices.

The individual parts contain the following sections.

Part I.1 Control of the CAD Data.2 Drawings on the www.

Part II.1 Component and Plant Identification Scheme.2 ITER Drawing Practices.3 CATIA Information for CAD Users.4 Mandatory CATIA Requirements for External Organisations.5 Translation of 2D CATIA and 2D AutoCAD Models.

Part III.1 Models and Drawings on the www.2 Using IMMS.

Part IV.Appendix A Standard symbols for PFDÕs and P&IDs.Appendix B ISO Standards for Drawings.Appendix C Example of the WBS/RAM.

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PART I

MANAGEMENT OF THE CAD DATA

AND

ACCESS TO THE CAD DRAWINGS

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Table of Contents

1 Control of the CAD Data _________________________________________________51.1 Definition of Terms___________________________________________________5

1.1.1 Models and Drawings _________________________________________________________51.1.2 Objects ____________________________________________________________________51.1.3 Assembly Set (AS) and Design Set (DS)__________________________________________5

1.1.3.1 Objects within a Design Set (DS) _____________________________________________51.1.3.2 Objects within an Assembly Set (AS)__________________________________________6

1.1.4 CATIA - Computer Aided Three Dimensional Interactive Application ___________________61.1.4.1 ITER CATIA Project File ___________________________________________________6

1.1.5 IMMS - Integrated Model Management System_____________________________________61.1.5.1 IMMS Model Browser ______________________________________________________61.1.5.2 TDBASE ________________________________________________________________71.1.5.3 TDOVLY ________________________________________________________________7

1.1.6 WBS/RAM Ð Work Breakdown Structure/Responsibility Assignment Matrix_____________71.1.7 Abbreviations and Acronyms ___________________________________________________7

1.2 Integrated Model Management System (IMMS) Numbering___________________81.2.1 The IMMS Tag within CATIA _________________________________________________8

1.2.1.1 Subject Index _____________________________________________________________81.2.1.2 Sequential IMMS Number___________________________________________________81.2.1.3 Drawing Number __________________________________________________________91.2.1.4 Object Type ______________________________________________________________91.2.1.5 Revision Number and Status _________________________________________________91.2.1.6 Request for Modification ___________________________________________________111.2.1.7 Site____________________________________________________________________111.2.1.8 Baseline ________________________________________________________________111.2.1.9 Date ___________________________________________________________________111.2.1.10 Designer Initials _______________________________________________________111.2.1.11 Task OfficerÕs Initials ___________________________________________________111.2.1.12 Title of Document______________________________________________________111.2.1.13 Abbreviated IMMS Tag__________________________________________________12

1.3 CAD Structure_____________________________________________________121.3.1 Drawing Search_____________________________________________________________121.3.2 Drawing Structure___________________________________________________________121.3.3 M+D Model and Drawing Structure _____________________________________________131.3.4 Configuration Model Structure_________________________________________________14

1.3.4.1 Configuration Tokamak Models _____________________________________________141.3.4.2 Configuration Site Models__________________________________________________15

1.3.5 Revised Models in a DS ______________________________________________________15

1.4 Component and Plant Identification Scheme ______________________________15

1.5 Management Structure_______________________________________________15

2 Drawings on the www __________________________________________________172.1 Types of Structures__________________________________________________17

2.1.1 Drawing Search_____________________________________________________________172.1.2 Drawing Structure___________________________________________________________17

2.2 ITER Database Home Page___________________________________________172.2.1 Representations within the Web Browser_________________________________________18

2.3 The Drawing Search ________________________________________________182.3.1 Using the Drawing Search ____________________________________________________192.3.2 Downloading the drawing _____________________________________________________19

2.4 The Drawing Structure ______________________________________________202.4.1 Structure Navigation_________________________________________________________202.4.2 Using the Drawing Structure __________________________________________________212.4.3 Viewing the Drawing ________________________________________________________22

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1 Control of the CAD Data

At the start of the ITER-EDA, CAD systems did not have model management tools thatallowed for change control. It was therefore decided by the project management to developour own management tools. These tools evolved into the ITER Integrated ModelManagement System (IMMS) that we use today.

1.1 Definition of Terms

1.1.1 Models and Drawings

In CAD systems with 3D capabilities, it is often normal practice to have the 3D geometryand the drawings in the same CAD model file.

The ITER CAD design office management have decided to separate the 3D geometry from the2D drawings. This gives us the advantage of having only one 3D geometry defining aparticular component. At the same time using the CAD tools (see section 1.1.5) we havespecially developed we can assemble these models together to make larger assemblies.Drawings from the 3D models can be created at any stage in this process again using thesetools.

1.1.2 Objects

An object is either an electronic folder (AS and DS) within the IMMS database or a CATIAmodel (3D, 2D and PL) linked to the IMMS database (see section 1.2). Several examples ofobject types are:

CATIA Objects IMMS Objects3D Model AS Assembly Set2D Drawing DS Design SetPL Parts List

1.1.3 Assembly Set (AS) and Design Set (DS)

An Assembly Set (AS) and a Design Set (DS) is a system of computer folders that containthe references to individual models and drawings. They are used to assemble together thelarger assemblies from the smaller component models.

The AS is hierarchically our highest level object in IMMS.

In a very simplistic form, the AS refers to the drawings and the DS refers to models. See thesections 1.1.3.1 and 1.1.3.2 for a full explanation of the objects within the As and DS.

1.1.3.1 Objects within a Design Set (DS)

A DS is a computer folder within IMMS (see section 1.1.5), that contains references tomodels and lower level DSs that make up a particular design assembly. It can be read by theBrowser and the models referenced in the DS accessed by CATIA through TDOVLY (seesection 1.1.5.3). When a DS is read by TDOVLY, the models referenced in the DS will openin CATIA as an overlay model session. The DS is given a unique tag (see section 1.2.1) so

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that all the contents can be tracked. A DS does not directly contain any drawings but caninclude references to models that contain drawings.

1.1.3.2 Objects within an Assembly Set (AS)

An AS is a computer folder within IMMS (see section 1.1.5), that contains the references todrawings, lower level ASs and DSs that make up a particular design assembly. An AS canonly be read by the Browser (see section 1.1.5.1) Ð it is not accessible by CATIA. The ASdoes not directly contain reference to any models only the DS that contains the models. TheAS is given a unique tag (see section 1.2.1) so that all the contents can be tracked.

Note. The model that contains the drawings shown in an AS will be referenced in the lowerlevel DS.

1.1.4 CATIA - Computer Aided Three Dimensional Interactive Application

The CATIA CAD system, marketed by Dassault Systemes France, is the system selected bythe Project for all its CAD applications. CATIA was chosen for its power in 3D solidmodelling and solid analysis.

1.1.4.1 ITER CATIA Project File

CATIA requires the use of a project file which defines and contains the geometric and projectspecific attributes (default colours, patterns, fonts, text heights, etc.). The ITER CATIAproject file model can be obtained from the CAD Administrator.

The project file is common to the JWS and the Home Teams. It is used to ensure theseamless transfer of CATIA models throughout the ITER project.

1.1.5 IMMS - Integrated Model Management System

The ITER Integrated Model Management System (IMMS) is designed to handle all of therelevant project information for CAD related documents to be recorded in the ITER projectdatabase. The system was developed in-house to meet these needs. IMMS is the term usedto describe the entire system that manages and controls the ITER CATIA data. IMMS usesan Oracle database for storing the data. Specialised software is used to access the IMMSdatabase.

The three IMMS access programs are the IMMS Model Browser, TDBASE and TDOVLY.

The CATIA models are stored externally to the database, but are recognised by IMMSthrough the model filename - TAG (see section 1.2.1), the directory where the model file isstored and internal IMMS coding.

The TDBASE and TDOVLY programs are used under license from TDC Limited.

1.1.5.1 IMMS Model Browser

This is the Unix user interface to the IMMS database.The IMMS Model Browser handles the management of the ITER CAD models and drawings.This management process records, tracks, updates, replicates, notifies a list of addresses,

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indicates the status, and organises traffic among the joint working sites for CAD relateddocuments.

In the remainder of this manual, the IMMS model browser is referred to as Òthe browserÓ.

1.1.5.2 TDBASE

This is the program within CATIA that connects the CATIA models in their UNIXdirectories to the IMMS database. TDBASE has the functionality to read models from andregister models to the IMMS database. This provides a user interface to the database directlyfrom within the CATIA environment (see part III section 2).

1.1.5.3 TDOVLY

This is the program within CATIA that links design sets (DSs see section 1.1.8) to theIMMS database. TDOVLY has the functionality to read a DS and overlay the containedmodels in a CATIA session. This provides a user interface to the database directly fromwithin the CATIA environment (see part III section 2).

1.1.6 WBS/RAM Ð Work Breakdown Structure/Responsibility AssignmentMatrix

The WBS/RAM is used by IMMS. Appendix C shows the two highest levels of theWBS/RAM. The WBS/RAM to the fifth level is available as a separate document. ThisWBS/RAM is reviewed regularly and updated when task officers are changed.

1.1.7 Abbreviations and Acronyms

Abbreviationor Acronym

Full word

Assy AssemblyAS Assembly SetCSA CAD Structure AdministratorDia. DiameterDIU Design Integration UnitDrg. DrawingDOM Design Office ManagerDS Design SetIMMS ITER Model Management SystemJCT Joint Central TeamJWS Joint Work SiteMech. MechanicalP&ID Piping and Instrumentation DiagramPFD Process Flow DiagramPL Parts ListRAM Responsibility Assignment MatrixSht SheetSub-assy Sub-assemblyWBS Work Breakdown Structure

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1.2 Integrated Model Management System (IMMS) Numbering

The IMMS assigns a unique number, the IMMS tag, to individual CATIA objects (see Figure1.2.1). See part III section 2 for a full description of how IMMS is used.

1.2.1 The IMMS Tag within CATIA

The IMMS tag uniquely identifies all object types within the database. Within CATIA, thereis a restriction of 70 characters that can be used in a tag. IMMS tags that are longer than thatcan be read using the Browser (see part III section 2) or using the www (see sections 2 andsee part III section 1). For CATIA object types, certain information is put into IMMS usingthe Browser or TDBASE (see part III section 2) and the database assigns the tag. Someexplanation of the IMMS tag elements is required to understand the CAD structures (seesection 1.3).

Figure 1.2-1 Example of an IMMS Tag

This typical IMMS tag is normally written as follows:16.0465.0000.3D.0001.W

1.2.1.1 Subject Index

Digits 1 and 2 of the tag describe the subject of the CATIA object. The subject index is takenfrom the second level WBS number (without decimals, see Appendix C); in the example, WBS1.6 is the blanket system, which is shown as Ô16Õ. Any object can be filed in the database tolower levels (3rd, 4th etc.) of the WBS. This is not shown in the tag but is shown on thedrawing and parts list title block (see part II section 2.4.3 and see part III section 2).

1.2.1.2 Sequential IMMS Number

Digits 3 through 6 are the unique sequential object numbers supplied by the database. In thisexample, the number is Ô0465Õ. N.B. These digits apply to ASs, DSs and models.

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1.2.1.3 Drawing Number

Digits 7 through 10 are used for drawings and parts lists that are contained within a model.Another way of looking at this is they are sequential sheet numbers in the model, in thisexample the number is Ô0000Õ.

1.2.1.4 Object Type

Digits 11 and 12 refer to the object type; there are five object types at this time. For the firstthree objects below, digits 7 through 10 are always Ô0000Õ.

AS Assembly Set Folder containing DS(s) at a lower level, AS and DrawingsDS Design Set Folder containing DS(s) at a lower level and Models3D Model The CATIA file containing 3D and 2D Data

The next two objects types reside within a model. Therefore, they always take the modelnumber (digits 3 through 6). Digits 7 through 10 will increment depending upon how manydrawings or parts lists, reside in the model. As stated before they are sequential sheetnumbers within the model.

2D Drawing 2D Data within a ModelPL Parts List 2D Data within a Model

When stating an IMMS tag, the minimum number of digits used must include the object type(e.g., 10.0001.0001.2D). This may be abbreviated to 10.1.1.2D by removing the leading zerosfrom each field (see also section 1.2.1.13).

1.2.1.5 Revision Number and Status

This includes the reference or formal revision number, the working revision number and statusof Figure 1.2-1.Digits 13 through 17 refer to the revision number and status. These five digits should betreated together.Digits 13 through 16 refer to the revision number. Digit 17 refers to the status.Digits 13 and 14 are used for the status ÔRÕ or ÔFÕ.Digits 15 and 16 are used for the status ÔWÕ.Once an object has been at ÔRÕ or ÔFÕ status, digits 13 and 14 remain unchanged until the nexttime that status is used. See example in section 1.2.1.5.1.For a ÔPÕ revision of an approved object, digits 13 through 16 remain unchanged until themodel is approved. See example in section 1.2.1.5.1.Digit 17 is the status. There are seven statuses.

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Symbol StatusP PrivateC CheckedW WorkingR ReferenceF FormalM ModifiedO ObsoleteX Cancelled

The following is an example of Change of Status procedure.A model starts life as Ô0000.PÕ. When the design is sufficiently mature, it is approved asworking (W) status and moves through the following process.

It is first checked and goes to status Ô0000.CÕ after checking it then moves to Ô0001.WÕ

If a new revision is required, a new model is created Ô0001.PÕ. It is then checked as Ô0001.CÕand approved as working Ô0002.WÕ. The previous revision 0001.W is saved as obsolete0001.O.

This same iteration process carries on until it is decided to increase its status to ÔRÕ.

When the design maturity of a model reaches the stage where it is suitable to be released tothe members of the Home Teams. The model is prepared for reference status. The model ischecked against the configuration models to ensure the space envelope is not exceeded and theinterfaces with adjacent components is correct.

When approving as reference, it moves to Ô0100.RÕ. If further revisions are required themodel moves back to Ô0100.PÕ. Then to Ô0100.CÕ, then to Ô0101.WÕ, then to Ô0200.RÕ, thento Ô0201.PÕ etc. as shown below. (The sequence table below ignores the fact that theprevious approved revision is saved as obsolete for the history of the model)

P Private e.g. 0000.PC Checked e.g. 0000.CW Working e.g. 0001.WP Private e.g. 0001.PC Checked e.g. 0001.CW Working e.g. 0002.WR Reference e.g. 0100.RP Private e.g. 0100.PC Checked e.g. 0100.CW Working e.g. 0101.WR Reference e.g. 0200.RP Private e.g. 0201.P

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1.2.1.6 Request for Modification

Digits 18 through 20 are used only for a ÒRequest for ModificationÓ, otherwise it is left blankthus Ò---Ò. This field is in two parts. Character 18 signifies the site requesting themodification to a model that originates from a remote site (e.g. G for Garching, N for Naka).Digits 19 and 20 form the revision number for this modification. The ÒMÓ status keeps thesame values of digits 13 to 16 as the previously released model (see part III section 2.10.4.6).

1.2.1.7 Site

Character 21 is the alphabetical character signifying the site where the object has beendeveloped. These will be entered automatically by the database. The characters used are:G: Garching N: Naka

1.2.1.8 Baseline

This four character alphabetical field (characters 22 to 25) is the baseline of the machine forexample, FEAT.

1.2.1.9 Date

The date format is the year, month and day of the object registration. The date is givendirectly by the database in the field digits 26 to 31.

1.2.1.10 Designer Initials

This three character alphabetical field (characters 32 to 34) are for the initials of the designerwho made the CATIA object. The designerÕs initials are allocated automatically by thedatabase.

1.2.1.11 Task OfficerÕs Initials

This three character alphabetical field (characters 35 to 37) is the initials of the task officer forthe object when registered. This information is assigned automatically from the responsibilityassignment matrix (RAM) within the database when the designer chooses the WBS level ofthe object (see Appendix C).

1.2.1.12 Title of Document

This field is a description of the object. In the Oracle database, it can have up to 70characters plus the 47 characters already being used, thus giving a total of 117 charactersmaximum. Within CATIA, only the first 23 characters of the title are shown in the modelfilename, as CATIA is limited to a total of 70 characters.

Note. To indicate whether a CATIA model contains only 3D space geometry or onlydrawings, the following text is added at the start of the model title.

3D These two characters signify the model contains only 3D space geometry.2D These two characters signify the model contains only drawings.

Note. The Ò2DÓ identifier is only added to the model title it is not shown in the drawing title.When a model contains both 3D space geometry and drawings, no additional text is added tothe model title.

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1.2.1.13 Abbreviated IMMS Tag

Though the number at first looks complex, after use it becomes easier. The zeros before anumber are part of the tag structure and do not need to be included when quoting the number.The number can be simplified as for example, 12.0045.0002.2D.0001W would read Ôdrawingnumber 12-45-sheet 2-issue 1-workingÕ. This is clearly a drawing of the poloidal field coilssystem (see subject index Ò12Ó in Appendix C).

1.3 CAD Structure

There are four structures within IMMS:

1) Drawing Search2) Drawing Structure3) M+D Model and Drawing Structure4) Configuration Model Structure

Structures 3) and 4) can be viewed only as 3D models within CATIA (at this time) usingTDOVLY (see part III section 2). Even so, the structure and its numbers can be followedusing the www (see part III section 1). It is useful to use both systems when moving throughthe structures. The reason for both structures 3) and 4) to exist is as follows. Everycomponent is designed as a self-consistent entity for costing, procurement and manufacture.This is defined in structure 3) M+D Model and Drawing Structure. At the same time everycomponent exists in a definitive set of xyz co-ordinates and interacts with every othercomponent in the same space or volume that needs to be checked for consistency, ensuringthey are interference free. The structures all use AS and DS.

1.3.1 Drawing Search

This is a search engine to allow the user to locate any drawing whose number is known andalso to download a pdf file from this drawing (see section 2).

1.3.2 Drawing Structure

This is a structure to allow the user to locate any reference drawing within the ITER design.The structure is based on a folder system that spreads out from the WBS top two levelsdown to the component level. Figure 1.3-1 shows a simplified drawing structure AScontaining only drawings (see section 2). The example uses a three-legged table, as this iseasier to explain the concept.

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Figure 1.3-1 Simplified Drawing Structure AS

1.3.3 M+D Model and Drawing Structure

This is a structure of each model component connected to any of its relevant drawings withinits own WBS system (i.e. TF coil system). This structure enables the user to find therelationship between drawings and the model(s), from which they were derived forprocurement, manufacture or costing purposes. This ensures data integrity. The samemodels exist in both the model and drawing structure and the configuration model structure.To help identify the folders for the models and drawings structure the title starts withÔM+DÕ. Figure 1.3-2 shows a simplified model and drawing structure AS, containing DSs(with 3D models inside), and the drawings associated with them (see part III section 1). Theexample uses a three-legged table, as this is easier to explain the concept.

Figure 1.3-2 Simplified Model and Drawing Structure AS

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1.3.4 Configuration Model Structure

The configuration model structure is used to locate any model that is used for theconfiguration control of the tokamak and the site. All our models use the same reference axissystem, which means the different components and systems are always in their correctrelative position (see part III section 1). The configuration model structure is split into twoparts as follows :

1) The Configuration Tokamak Models which are the models defining the componentsinside the Bio-shield of the tokamak hall.

2) The Configuration Site Models which are the models defining the remainder of thesite.

1.3.4.1 Configuration Tokamak Models

These configuration models define the Tokamak. They are used to control the space envelopeand interfaces of the component for configuration control purposes. In the case of the majortokamak components, e.g. the VV, a series of simplified solid models have been created.These configuration models contain a solid that defines the space envelope and interfaces withadjacent components. A designer working on a component is responsible for ensuring he doesnot exceed the space envelope of his component or change the interface to an adjacentcomponent without receiving approval from the DIU. To help identify the AS and DS thatbelong to the configuration tokamak models structure the title starts with ÔConfigÕ. Figure1.3-3 shows a typical configuration tokamak model structure AS containing DS. These DScontain the models for that particular component.

Figure 1.3-3 Typical Configuration Tokamak Model AS

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1.3.4.2 Configuration Site Models

This is a topological structure to locate any model, which makes up the ITER site. Theavailable power of a standard CAD workstation, make it impossible to show all the 3Dmodels that make up the complete site at the same time. At the top level, the site is split into24 zones or boxes. Each zone relates to a building or site area. Every model exists in adefinitive x, y and z co-ordinate range within one or more zones. Global interference checkscan be carried out on these zones for configuration control purposes. Therefore, the completeassembly may have multiple models making up any one assembly. To help identify foldersfor the configuration models the title starts with ÔZoneÕ. Figure 1.3-4 shows a simplifiedconfiguration site model structure AS containing DS. These DS contain the models for thatparticular zone. The example uses a three-legged table, as this is easier to explain the concept.

Figure 1.3-4 Typical Configuration Site Model AS

1.3.5 Revised Models in a DS

Changes within a DS are notified to the user through the database when the DS is next read.When a model in a DS has been revised the DS will show the ÔOÕ obsolete revision and thedesigner will be asked if he requires the new revision.

1.4 Component and Plant Identification Scheme

The components shown in PFDs and P&IDs are identified using the component and plantidentification scheme described in part II section 1.1.

1.5 Management Structure

The Head of the JWS Design Office (DOM) is the JCT responsible officer for the CADDesign Office at each JWS. He is also referred to as the Design Office Head.

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The CAD Administrator is the person responsible for the CAD systems and environment ateach JWS.

The JWS CAD Structure Administrator (CSA) is the JCT responsible officer for managingthe AS and DS structure within the IMMS database.

The ITER Database Manager is the JCT responsible officer for managing the IMMS databasefor the ITER Project.

The Design Integration Unit (DIU) is the JCT group that has the task to control the overallconfiguration of the ITER machine in both the engineering and physics areas.

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2 Drawings on the www

The CAD drawings are available on the www. The addresses are:

Garching www.iter.org/dbNaka http://iterdbs.naka.jaeri.go.jp:8000/agt/plsql/access1.home1

The Oracle database user name and password must be entered to access the ITER Databasehomepage. Please check with the IMMS Database Administrator, should problems withaccess be encountered.

2.1 Types of Structures

Two types of structures have been created within the IMMS database for viewing drawings.These structures are available to both the JWS and the Home Teams. They are:

1) Drawing search2) Drawing structure

2.1.1 Drawing Search

The drawing search is a search engine that allows the user to query the IMMS database forany approved drawing. If the drawing number is known this can be entered. Alternatively,the database can be searched by completing the appropriate field. A small preview of theselected drawing is displayed in a window and if desired a pdf format file of the drawing canbe downloaded (see section 2.3).

2.1.2 Drawing Structure

The drawing structure allows the user to locate any reference drawing within the ITER design.The structure is based on a folder system that spreads out from the WBS top two levelsdown to the component level (see section 2.4).

2.2 ITER Database Home Page

After logging into the web site as a member of the Home Team, you will be directed to theÒITER Database Home PageÓ (see Figure 2.2-1). This web page contains a selectable list ofÒIMMS FunctionsÓ. When the web site is accessed by the JCT at the JWS this homepagehas additional functionality (see part III - section 1and Figure 1.2-1).

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Figure 2.2-1 ITER Database Home Page

2.2.1 Representations within the Web Browser

In front of each line is an icon that depicts the object type, there are two types for thedrawings on the www :

Assembly Set (AS): This is a folder that is only read by the Browser

Drawing: This is a 2D object within a CATIA model and does notcontain 3D information

At the top level, there is a set of folders AS with a title. This title is taken from the WBS. Infront of this title are the first two levels of the WBS (see Appendix C), for example:10.Tokamak Basic Machine1.0 is the top level WBS for the tokamak basic machine and is represented as 10.

When we get down to the level of drawings a typical tag would be

62.0354.0001.2D.0100.R.TRITIUM VACUUM & SERVICES BUILDING PLAN VIEW

62 WBS levels 1&2354 Models number1 Drawing number within the model2D Indicates this is a drawing1 Issue numberR StatusFollowed by the model title

2.3 The Drawing Search

From the ÒITER Database Home PageÓ (see Figure 2.2-1), select ÒDrawing SearchÓ and theÒITER Database of DrawingsÓ page is shown (see Figure 2.3-1).

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2.3.1 Using the Drawing Search

In the upper portion of this web page is the search engine (see Figure 2.3-1). Clicking on theWBS button allows the user to either search the whole database or a selected WBS. If thedrawing number or part of the title is known that can be entered into the appropriate field.The search can be out for either, the last two weeks, last 30 days or all dates. The search canalso be made for ÔALL DRAWINGSÕ or only those that are included in the ÔDRAWINGSTRUCTURE ONLYÕ (see section 2.4).

The search button when pressed will execute the search. The search result will list thedrawings in a scrollable list in the lower portion of the page.

In the upper right hand portion of this page is a small preview window showing currentdrawing selected. To the right of this window are up and down buttons to scroll through thelist of drawings.

2.3.2 Downloading the drawing

Between these buttons is a PDF button. If this button is pressed, a pdf file is downloaded toyour computer. Depending on your web browser preference setting, you can either view thefile using ÒAcrobat ReaderÓ or the internal ÒPDFViewerÓ.

By default, the first drawing is always displayed in the preview window.

The current drawing number and title is displayed to the left of the preview. In the list ofdrawings, the current drawing is indicated by a highlighted icon.

The .pdf file is formatted to print at A3 size. Figure 2.3-2 shows an example of a pdfdrawing.

Figure 2.3-1 Drawing Search

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Figure 2.3-2 PDF Drawing

2.4 The Drawing Structure

From the ITER IMMS home page (see Figure 2.2-1), select ÒDrawing StructureÓ and theÒITER Drawing StructureÓ page is shown (see Figure 2.4-1).

In the upper portion of the page is the structure navigation (see section 2.4.1).

In the lower portion of the page is the list of children of the drawing structure.

At the bottom of the page is a list of the parents of the drawing structure. If one of these isselected, you will return to the higher level in the structure.

2.4.1 Structure Navigation

At the top of the web page (see Figure 2.4-1) is the structure navigation ÔShow LevelsÕbutton. This allows you to move down on various levels of a structure 1,2,3 or ALL. If youselect the Ôshow levelsÕ button, the possibilities will be shown. Select the level then press therefresh button to actuate the request.

your computer down. Start with show levels Ô1Õ until you know how many levels there are,then you can increase the levels to show more of the structure.

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Figure 2.4-1 Drawing Structure

2.4.2 Using the Drawing Structure

In our example if the AS Ò53-NEUTRAL BEAM SYSTEMÓ is selected (see Figure 2.4-1)then this AS will be opened. If we now select show Ô2Õ levels and press the refresh buttonwe will see the resultant list (see Figure 2.4-2).

Figure 2.4-2 Neutral Beam System Drawing Structure

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2.4.3 Viewing the Drawing

In our example, (see Figure 2.4-2). If you select the drawing number 53.0001.0002 from theAS Ò53-NB CELL INTEGRATIONÓ this is displayed in the preview window. You can nowpress the PDF button to the left of the preview window and you will be shown the drawing(see Figure 2.4-3).

Figure 2.4-3 PDF Drawing

CAD Manual I

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