WIXLIB

CERNLHC Project Document No.LHC-PM-QA-403.00 rev 1.0CH-1211 Geneva 23SwitzerlandCERN Div./Group or Supplier/Contractor Document No.-theEDMS Document No.LargeHadronCollider103568projectDate: 2000-07-05Quality Assurance StandardDESIGN STANDARDSELECTRICAL SCHEMATIC DIAGRAMSAbstractThis document provides standards for all electrical schematic diagrams for the LHC andits detectors. It covers:! High and low voltage distribution diagrams.! Relay and automatism diagrams.! Lighting, power and earth protection diagrams.! LHC main ring magnets cabling diagrams.! Cooling and ventilation relay and automatism diagrams.Prepared by :Checked by :Approved by :Martial DujardinST/ELMartial.Dujardin@cern.chJoaquin Inigo-GolfinST/CVJoaquin.Inigo-Golfin@cern.chLHC Quality AssuranceWorking GroupPaul FaugerasDeputy to LHC ProjectLeader for QualityAssurance

LHC Project Document No.LHC-PM-QA-403.00 rev 1.0Page 2 of 14History of ChangesRev. No.DatePagesDescription of Changes0.1 draft2000-05-151st draft submitted to QAWG for comments0.2 draft2000-05-242nd draft submitted to QAWG for comments1.02000-07-0510References corrected. Released following QAWG meeting.

LHC Project Document No.LHC-PM-QA-403.00 rev 1.0Page 3 of 14Table of Contents1.PURPOSE . 42.POLICY . 43.SCOPE. 44.RESPONSIBILITIES . 45.5.15.25.3DRAWING PREPARATION - GENERAL . 5DRAWING SIZES . 5TITLE BLOCK . 5MODIFICATION LIST . 66.6.16.2NUMBERING SCHEMES . 6DIAGRAMS PRODUCED BY ST/EL. 7DIAGRAMS PRODUCED BY ST/CV . 77.7.17.2ARCHIVING PROCESS . 7ST/EL ELECTRICAL DIAGRAMS. 7ST/CV ELECTRICAL DIAGRAMS . 88.8.1HIGH AND LOW VOLTAGE DISTRIBUTION UNIFILAR DIAGRAMS . 8FILE NAMING CONVENTION. 89.9.1RELAY AND AUTOMATISM DIAGRAMS . 8FILE NAMING CONVENTION. 810. LIGHTING, POWER AND EARTH PROTECTION DIAGRAMS . 910.1 FILE NAMING CONVENTION. 911. LHC MAIN RING MAGNETS CABLING DIAGRAMS. 912. COOLING AND VENTILATION RELAY AND AUTOMATISM DIAGRAMS . 1012.1 FILE NAMING CONVENTION.1013. RELATED DOCUMENTATION . 1014. ANNEXES . 10

LHC Project Document No.LHC-PM-QA-403.00 rev 1.0Page 4 of 141. PURPOSETo provide standards for all electrical schematic diagrams for the Large HadronCollider (LHC) and its detectors.2. POLICYAll electrical schematic diagrams for the LHC project shall be created with a ComputerAided Design (CAD) system, in accordance with the general quality assurance policy ofthe LHC project.The CAD systems used for electrical schematic diagrams prepared at CERN areAutoCAD1, the AutoCAD add-on application Alpage-Elec2, and SEE 30002.All electrical schematic diagrams prepared at CERN, and referenced in a CERNcontractual document, shall incorporate the appropriate CERN title block. The drawingtittle shall be written in English only or English and French.All electrical schematics diagrams shall be stored in the CERN Drawing Directory(CDD) with the relevant descriptive information and identified by a unique drawingnumber defined in accordance with the CERN Drawing Directory rules as described inthe “CDD Manual”[ 1 ]. Diagrams may be stored as Hewlett Packard Graphic Language(HPGL) plot files and native CAD files or as HPGL plot files only.All electrical schematic diagrams shall be submitted to a review and approval processbefore being released as described in "Drawing Management and Control", [ 2 ].New versions of released diagrams shall be submitted to the same review andapproval process as the original diagrams.3. SCOPEThis standard is applicable to:All electrical schematic diagrams for the LHC and its detectors. This includes:! High and low voltage distribution schematic diagrams.! Relay, wiring and automatism schematic diagrams.! Lighting, power and earth protection schematic diagrams.! LHC main ring magnets cabling schematic diagrams.! Cooling and ventilation relay and automatism diagrams.4. RESPONSIBILITIESManagers, Supervisors and Project Engineers (PE) at CERN working on the LHC Projectare responsible for:! Ensuring that designers and draughtsman are aware of and understand theprocedures described in the present document.! Ensuring that these design standards are fully implemented in their design.–12AutoCAD is a registered trademark of Autodesk, Inc.Alpage-Elec and SEE 3000 are registered trademarks of Ige-Xao

LHC Project Document No.LHC-PM-QA-403.00 rev 1.0Page 5 of 14! Ensuring that industrial support personnel assigned to CAD design and draftingactivity is suitably trained and has been informed of CERN practices before startingwork.Every designer and draughtsman is responsible for producing diagrams in compliancewith these design standards.The ST Division is responsible for the definition of equipment codes used for electricalschematic diagrams. Equipment codes for LHC equipment have to be approved by theLHC Co-ordinator for equipment codes [ 3 ].The diagrams in the categories below are produced under the responsibility of the STDivision Electrical Engineering and Telecom group (ST/EL).! High and low voltage distribution schematic diagrams.! Relay, wiring and automatism schematic diagrams.! Lighting, power and earth protection schematic diagrams.! LHC main ring magnets cabling schematic diagrams.Cooling and ventilation relay and automatism diagrams are produced under theresponsibility of the ST Division Cooling and Ventilation group (ST/CV).5. DRAWING PREPARATION - GENERAL5.1 DRAWING SIZESUnless otherwise specified all diagrams shall be made on one of the followingInternational Organization for Standardization (ISO) standard sizes:HorizontalA0 (1189 x 841 mm)A1 (841 x 594 mm)A2 (594 x 420 mm)A3 (420 x 297 mm)VerticalA4 (297 x 210 mm)5.2 TITLE BLOCKTitle blocks differ slightly depending on the CAD application used for preparing thediagram, but they are in all cases compatible with CDD.TITLEThe diagram‘s title in English or in English and FrenchDRAWING NUMBERAs described in chapter 6.QA CATEGORYThe code of the quality assurance category (1 char), see [ 4 ]DRAWING SIZEThe 2nd digit of the size (3 for size A3)REVISION INDEXThe 2nd letter of the revision indexAUTHORThe author’s initial and surnameDATEThe date of creation of the drawing in ISO format (yyyy-mm-dd)SCALEUsed only for lighting, power and earth protection diagrams

LHC Project Document No.LHC-PM-QA-403.00 rev 1.0Page 6 of 14Figure 1 - Title block of a lighting diagramFigure 2 - Title block of a single line diagram5.3 MODIFICATION LISTA new line has to be added to the modification list of diagrams for each revision, withthe following data:INDEXThe 2nd letter of the revision index.DATEDate of the modificationNAMEInitial and surname of the author of the modificationZONEThe location of the modification (1 char 1 digit)MODIFICATIONThe Engineering Change Request (ECR) number of the modificationor a text describing the modification(s)Figure 3 - Diagram modification list6. NUMBERING SCHEMESThe numbering scheme for electrical schematic diagrams is derived from the schemein use for LHC drawings. However deviations are introduced to take into account thespecific needs related to electrical diagrams.

LHC Project Document No.LHC-PM-QA-403.00 rev 1.0Page 7 of 146.1 DIAGRAMS PRODUCED BY ST/ELA deviation is introduced in the use of the sequential number which is 3 digits longinstead of 4. The digit freed in this way is used for a geographical location code. Thestructure of the drawing number is:Project code:A project identification code. For the LHC project the code is LHCEquipment code:An LHC equipment code (5 chars/digits). See annex A1.ZoneA geographical location code (1 digit)Number:A sequential number (3 digits).Example:EQUIPMENT CODEPROJECT CODEZONENUMBERL H C E B L 5 0 1 4Note: Equipment codes shorter than 5 chars/digits shall be completed withunderscores ( ).6.2 DIAGRAMS PRODUCED BY ST/CVThe position normally used for the equipment code is replaced by a 1 charactersystem code followed by a 4 digit building number. The structure of the drawingnumber is:Project code:A project identification code. For the LHC project the code is LHCSys:An LHC system identification code. E for electrical system.BuildingA building number (4 digits).Number:A sequential number (4 digits).Example:PROJECT CODESYSBUILDINGNUMBERL H C E 2 6 8 4 0 0 0 17. ARCHIVING PROCESSElectrical diagrams are archived in CDD as HPGL plot files. The process is describedbelow. Native CAD files of ST/CV diagrams are also stored in CDD.7.1 ST/EL ELECTRICAL DIAGRAMSA plot file in HPGL2 format is prepared and placed in a sub-directory of the directorySRV4 DIV\drawings\DRAWINGS\ELEC\HPGL\.This sub-directory, and the plot file it contains, are named in accordance with thefollowing convention:Sub-directory nameDOPRJFile nameEQUIP3N.pltwhere:

LHC Project Document No.LHC-PM-QA-403.00 rev 1.0Page 8 of 14DOPRJ:A design office code (2 digits) concatenated with a project code (3chars)EQUIP:The equipment code (5 chars/digits)ZONE:The geographical location code (1 digit)3NThe second to fourth digits of the diagram sequential number-3digitsExample:The plot file of the drawing LHCEBL 5004 is named EBL5004.plt and stored in thesub-directory SRV4 DIV\drawings\DRAWINGS\ELEC\HPGL\77LHC\.Only the last version of the plot file is stored in this directory.7.2 ST/CV ELECTRICAL DIAGRAMSA plot file in HPGL2 format is prepared; it is named and stored following theconvention described in section 12.1 with the exception of the file extension which isPLT instead of DWG.8. HIGH AND LOW VOLTAGE DISTRIBUTION UNIFILARDIAGRAMSHigh and low voltage distribution single line diagrams are prepared with the CADsystem Alpage Elec which will be replaced by SEE 3000 in the future. They are drawnas a single folio in the sizes A0 to A4.They shall be prepared in accordance to the to International ElectrotechnicalCommission (IEC) 60364-1 (1992-10) standards, [ 5 ] and (IEC) 60617 standards,[ 8 ], as well as to CERN Safety Instructions IS23 [ 6 ] and IS24 [ 7 ].8.1 FILE NAMING CONVENTIONThe native CAD files are stored on the NICE server SRV3 DIV, in the directoryST EL\BE\AE4 V4. A sub-directory is created for each diagram containing all the filesrelated to that diagram. This sub-directory is named in accordance with Alpage-Elecconstraints: 5 alphanumeric characters (1 letter followed by 4 digits)Example: ST EL\BE\AE4 V4\M00029. RELAY AND AUTOMATISM DIAGRAMSRelay and automatism schematic diagrams are prepared with the CAD systems AlpageElec and SEE 3000. Diagrams supplied by contractors may be prepared with AutoCAD.They are drawn as multi-folios in A3 size.They shall be prepared in accordance to the to International ElectrotechnicalCommission (IEC) 60364-1 (1992-10) [ 5 ] and (IEC) 60617-1 (1985-01) [ 8 ]standards, as well as to CERN Safety Instructions IS23 [ 6 ] and IS24 [ 7 ].9.1 FILE NAMING CONVENTIONAlpage Elec:As described in chapter 6.1SEE 3000:The native CAD files are stored on the NICE server SRV3 DIV, inthe directory ST EL\BE\SEE3000. A sub-directory is created foreach drawing containing all the files related to that drawing.