1. The document discusses the importance of interdisciplinary interface engineering for electrical projects and describes various types of interfaces and deliverables that must be coordinated between electrical and other disciplines like process, piping, civil, and instrumentation. 2. It provides examples of typical electrical deliverables that interface with other groups and deliverables received from other groups including plans, diagrams, schedules, specifications and calculations. 3. Maintaining proper documentation through methods like document control indexes, distribution matrices, notes of meetings and memos is important to facilitate interface engineering and coordination between groups.

1. Electrical Deliverables and its Interdisciplinary Interfaces

2. Preface Interdisciplinary interface engineering : A major engineering aspect for electrical discipline Requires appropriate coordination at appropriate time to avoid mishap during execution stage Interface types Indirect interface – Deliverables exchanged as input or output without any squad check Direct interface – Deliverables going through squad check before furnished as official input or output. Basis of Interface DCI – Document Control Index DDM – Document Distribution Matrix Vendor Documents requiring squad check

3. Electrical Deliverables Electrical Design Area Classification Plans Single Line Diagram and Control Schematics Substation Layout Cable Routing, Grounding, Lightning Protection, Lighting & Instrumentation Plans Cable Schedules & Interconnection Charts Electrical Engineering Design Basis & Load List Sizing and Selection of Electrical Equipments Specifications, MTO and Requisitions Vendor Drawing Review

4. Electrical Deliverables – contd. Electrical Studies & Calculations ETAP (for Power System studies) Capacitor Sizing Motor Voltage Drop Study Grounding Calculations Cable Sizing Lighting Calculations Lightning Protection Calculations

5. Typical Electrical DCI

6. Document Distribution Matrix – a typical format

7. Interface Engineering with Process Department Electrical Deliverables Flow of interface Process Data Hazardous Area Classification & Plans Material Safety Data Sheet (require case by case basis) Material of Construction Notes (required case by case basis) Process Design Basis (in case operation philosophy is to be known) Piping & Instrument Diagrams Flow of interface Process Flow Diagram Hazardous Area Classification & Plans Heat & Material Balance Sheet Electrical Deliverables Process Deliverables

8. Interface Engineering with Process Department – contd. Lightning Protection Calculation (for tank, vessel and tower dimensions) In order to decide motor rating under design and peak conditions if necessary for electrical study Utility Summary (case by case basis) Motor Control Schematics & Subsequently Control Cable Selection Piping & Instrument Diagrams Cable Sizing (for rating of mechanical loads) Flow of interface Lighting Calculation (for equipment dimensions) Load List (for rating of mechanical loads) Process Equipment Data Sheet (in case Sized Equipment List not available) Electrical Deliverables Process Deliverables

9. Interface Engineering with Process Department – contd. Flow of interface Hazardous Area Classification, Plans & Details HAZOP study and analysis Electrical Deliverables Process Deliverables

10. Typical Process Interface Deliverables

11. Interface with Piping Department Single Line Diagrams & S/S or Electrical room allocation Instrumentation Plans Underground Piping Plans Grounding Plans Piping Plan in Pipe Rack Cable Routing Plans All deliverables mentioned above Lightning Protection Plans All deliverables mentioned above Lighting Plans Battery Limits Layout Drawings Hazardous Area Plans Unit Module Key Plan Lightning Protection Calculation Lighting Calculation Unit Elevation Drawing (Pipe Rack & Platform Sections) Cable Sizing, Selection Plot Plan / Equipment Layouts Flow of interface Electrical Deliverables Piping Deliverables

12. Interface with Piping Department – contd. Indoor Lighting and Conduit Routing Plan Electrical Deliverables Flow of interface HVAC Deliverables Cable Routing Plan Substation / Electrical room layout HVAC Layouts Substation / Electrical room location plan Fire Fighting Piping Layout Cable Routing Plan Substation / Electrical room location plan Overall Plot Plan Flow of interface Electrical Deliverables Piping Deliverables

13. Typical Piping Interface Deliverables

14. Interface with Civil & Structural Department Roads and Drainage Drawings Paving Drawings Final Cable Raceway & Tray Routing Plans Foundation Drawings Electrical Deliverables Flow of interface Civil & Structural Deliverables Grounding Notes & Detail Drawings Main Grounding Grid and Equipment Grounding Conductor Calculation Soil Investigation Report including Soil Resistivity Data Flow of interface Electrical Deliverables Civil Data / Document (obtained from Owner)

15. Interface with Civil & Structural Department – contd. Electrical Deliverables Flow of interface Architectural Deliverables Indoor / Semi-Outdoor Lighting Calculation & Plans Industrial & Non-industrial Building Drawings Equipment Structure Drawings Lightning Protection Calculation & Plans Industrial & Non-industrial Building Drawings Street Lighting Calculation & Plan Roads & Drainage Drawings Flow of interface Electrical Deliverables Civil & Structural Deliverables

16. Interface with Civil & Structural Department – contd. Lighting & Small Power Plans Cable Routing Plan Electrical Deliverables Flow of interface Architectural Deliverables Substation / Electrical room Layout Building / Structural Drawings Equipment GA and Installation Details (Vendor Drawings) Equipment Foundation Drawings Substation / Switchyard / Electrical room Layouts Building / Switchyard Foundation Drawings Power & Cable Raceway Notes & Detail Drawings Cable Routing Plan Trench Foundation Drawings Flow of interface Electrical Deliverables C&S Deliverables

17. Typical C&S Interface Deliverables

18. Interface Engineering with Control & Instrumentation Department Control Cable Schedules Substation / Electrical room layouts (with RIE allocation for different units) Overall Control Philosophy UPS and UPS Battery Sizing UPS Load List Electrical Control Schematics & Terminal Block Diagram Control System / Electrical Interface Document Control Cable Selection Power & Control Cable Routing Plans Flow of interface Electrical Deliverables C&I Deliverables

19. Interface Engineering with Control & Instrumentation Department – contd. Instrument Wiring Design Specification Instrumentation Cable Routing Plans Instrument Cable Schedule Instrument Wiring Notes & Detail Drawings Cable Block Diagram Junction Box & LCP Location Plan Instrument Cable List Instrument Wiring Installation Specification Flow of interface Electrical Deliverables C&I Deliverables

20. Interface Engineering with Control & Instrumentation Department – contd. Substation Layouts (with IRP Location Plans) Electrical Control Schematics & Terminal Block Diagram DCS / SIS I/O Count Document Cable Block Diagram Instrument Cable List Flow of interface Electrical Deliverables C&I Deliverables

21. Typical C&I Interface Deliverables

22. Interface with Projects Department Electrical Service Flow of interface Project Service Deliverables / meetings / e-mail correspondences / vendor engineering review / test inspections Co-ordination between other disciplines, client, vendor, third party (statutory agencies) Weekly Progress Reports Work Share Plan Electrical Deliverables Flow of interface Project Deliverables Load List Sized Equipment List Electrical DCI and subsequent updating Of Electrical Project Control Documents Document Control Index Electrical Design Basis Project Site Data & Grid Utility Requirements Single Line Diagrams Flow of interface Electrical Deliverables Project Data

23. Typical Project Interface Deliverables

24. Interface Engineering & Electrical Work Flow

25. Conclusion Calls for proper planning of delivery schedule dates Require re-work on electrical plans case by case basis Better late than never Documentation to facilitate proper interface engineering Squad check templates / stamps Notes of Meeting Inter Office Memo / e-mail correspondences THANK YOU