Purpose of Technical Drawings

Module 1

Enabling Learning Objectives

• Given a P&ID, the learner will be able to identify the purpose of that P&ID according to their student guide.– Given a P&ID, locate the title block and identify

its purpose according to their student guide by answering 4 out of 5 questions

– Given a P&ID, locate the revision block and identify its purpose according to their student guide by answering 4 out of 5 questions

Enabling Learning Objectives

– Given a P&ID, locate the notes section and identify its purpose according to their student guide by answering 4 out of 5 questions

– Given a P&ID, identify the sheet reference numbering procedure for P&IDs according to their student guide by answering 4 out of 5 questions

Purpose of Technical Drawing

Purpose of a Technical Drawing

A – Architectural C – Civil Engineering (Site Grading, Paving, utility lines, drainage, etc)D – Mechanical Process (Piping and Instrument Diagrams)E- Electrical EngineeringF – Process (Flow Diagrams)G – General ArrangementH – Heating, Ventilation, and Air ConditioningI – Instrumentation and Control

K – Fire ProtectionL – PlumbingM – Mechanical EngineeringP – Piping DesignS- Structural Engineering (Steel and concrete structural details)T – TelecommunicationsV – Vessels (Tanks)Z- Project (General drawings, legends, schedules, indexes, etc.)

Purpose of a P&ID

Title Block

Sheet Reference Number

Sheet Reference Number

Project Numbers256 Pepper Research Chemical Plant257 Mammoth Mountain Plant258 Unalaska Nuclear Plant

Sheet Reference Number

Project Stage DesignationRD – Research and DesignCO - ConstructionSS – Systemization and Start-upMS – Maintenance and Servicing

Sheet Reference Number

Document TypeM2 – Catalyst & Chemical SummaryM4 – Heat & Material BalanceM5 – Flow DiagramM6 – P&ID

Sheet Reference Number

System LocatorM01 – Heating and Ventilation SystemsM02 – Water and Sewage SystemsM03 – Breathing Air SystemM04 – Electrical Power Supply System

Sheet Reference Number

Discipline CodeM – Maintenance OperationsS – Support OperationsE – Engineering Operations

Sheet Reference Number

Drawing Sequence Number1 through 899 – Building, Area, System Drawings900 through 999 – Common Drawings9000 series - New drawings

Sheet Reference Number

Drawing Revision Number000 – First publication of drawing001 – First published change002 – Second published change

Practical Exercise

Revision Block

Notes

Summary

Title BlockRevisions Block

Notes Block

Sheet Reference Number