11 Questions
Which one of the following symbols represents a level alarm high in a P&ID diagram?
LAH
Which one of the following symbols represents a temperature recorder in a P&ID diagram?
TR
Which one of the following symbols represents a pressure safety valve in a P&ID diagram?
PSV
Which one of the following symbols represents a flow element in a P&ID diagram?
FE
Which of the following is NOT included in a Piping and Instrumentation Diagram (P&ID)?
Exact orientation of equipment
What is the purpose of a Piping and Instrumentation Diagram (P&ID)?
To provide a concise format for how a system should function
In which areas are Piping and Instrumentation Diagrams (P&IDs) used extensively?
In the operation, repair, and modification of a plant
Which of the following is a typical detail shown on a P&ID diagram?
Valve sizes and types
During which phase of a project is a P&ID used to develop cost estimates and bid proposals?
Design and pre-construction
What is the purpose of P&IDs during construction?
To provide reference for field construction and inspection personnel
What do P&ID abbreviations such as 'NO' and 'NC' represent?
Normally open and normally closed valves
Study Notes
P&ID Diagram Symbols
- Level alarm high is represented by LAH symbol in a P&ID diagram
- Temperature recorder is represented by TR symbol in a P&ID diagram
- Pressure safety valve is represented by PSV symbol in a P&ID diagram
- Flow element is represented by FE symbol in a P&ID diagram
P&ID Diagram Content
- Piping and Instrumentation Diagram (P&ID) does not include architectural details
Purpose and Use of P&IDs
- Purpose of a Piping and Instrumentation Diagram (P&ID) is to provide a detailed design representation of a process system
- Piping and Instrumentation Diagrams (P&IDs) are used extensively in chemical, petroleum, and power generation industries
- Typical details shown on a P&ID diagram include pipe sizes, and instrumentation and valve identification
- P&IDs are used to develop cost estimates and bid proposals during the design phase of a project
- During construction, the purpose of P&IDs is to provide a guide for installation and quality control
P&ID Abbreviations
- NO and NC abbreviations in a P&ID represent normally open and normally closed respectively
Test your knowledge on piping and instrumentation diagrams (P&IDs) with this quiz. Learn about the importance of P&IDs in showing equipment details, piping orientation, and control and instrumentation devices.
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