P&ID

Question 1

Description of the nature of the process

Answer 1

Process flow sheet

Question 2

Other terms for P&ID

Answer 2

Engineering Flow Sheet
Engineering Line Diagram

Question 3

Who does the design and piping system specification of process instrumentation & control system

Answer 3

Specialist design groups

Question 4

Identified by equipment no.
Drawn roughly in proportion
Location of nozzles are shown

Answer 4

Process equipment

Question 5

Identified by line numbers

Answer 5

Pipes

Question 6

Line number should have

Answer 6

Pipe size and material of construction

Question 7

Two types of valves

Answer 7

Control
Block

Question 8

Valves are identified through ID no containing

Answer 8

Type ( symbol or code)
Size

Question 9

3 ancillary fittings

Answer 9

Inline sight glass
Strainer
Steam traps

Question 10

In this process the utility or service lines are shown in P&ID

Answer 10

Simple process

Question 11

T/F: In complex process the service connection to each unit operation must be shown in P&ID

Answer 11

T

Question 12

Resembles process for sheet without process information

Answer 12

P&ID

Question 13

T/F: In P&ID, same equipment no. Should be used

Answer 13

T

Question 14

In P&ID, these were more detailed than those used for Process flow sheet

Answer 14

Equipment symbols

Question 15

T/F: There exists an ISO or European Standard for P&ID symbols

Answer 15

F

Question 16

Most used international standard symbols for instruments, controllers and valves

Answer 16

Instrumentation Systems & Automation Society Design Code

Question 17

T/F:When laying out a P&ID, show relative elevation of the process connections

Answer 17

T

Question 18

Examples of Relative elevation of the process connections

Answer 18

NPSH of Pumps
Barometric legs
Thermosyphon Reboilers

Question 19

Full details of pipe layout are shown in?

Answer 19

Piping isometric drawing

Question 20

Where does the P&ID prepared

Answer 20

CAD

Question 21

Modern control valves has final control elements and are actuated by

Answer 21

Electric motors

Question 22

Older control valves are actuated by___ using ____

Answer 22

Pneumatic Signals
Instrument air

Question 23

Device that makes something move/operate

Answer 23

Actuator

Question 24

Receives a source of energy to move something

Answer 24

Actuator

Question 25

Used when electronic controllers might cause process hazard and when electric power is not available/reliable

Answer 25

Pneumatic

Question 26

Inclusions of P&ID

Answer 26

Process equipment Pipes Valves Ancillary Fittings Pumps Control Loops and Instruments

Question 27

Different standards followed by some contries

Answer 27

BS 1646 in UK DIN 19227 & DIN 2429 in Germany

Question 28

Actuator for larger valves

Answer 28

Motor actuator

Question 29

For valves that opens and closes which is commonly present in batch processing

Answer 29

Digital & Solenoid

Question 30

Drawn to a manner distinguishable from process lines

Answer 30

Instrument connecting lines

Question 31

T/F: Process line are thinner than instrument connecting lines

Answer 31

F

Question 32

Direction of the arrow shows the position of the valve on failure of the power supply

Answer 32

Failure mode

Question 33

Controller & display is located out on the plant near the sensing instrument location

Answer 33

Locally Mounted

Question 34

Located in the control room

Answer 34

Main panel

Question 35

T/F most controllers are mounted in control rooms except small plants

Answer 35

T

Question 36

A system that is functionally Integrated, but consisting of subsystems that may be physically separate and remotely located from one another

Answer 36

Distributed control system

Question 37

Is an operator interface device that is used to display process control information from a number of sources at the command of the operator

Answer 37

Shared display

Question 38

Examples of operator interface device

Answer 38

Computer screen Video screen

Question 39

T/F: Most plants built since 1990 use instrument panels instead of shared display

Answer 39

F, the other way around

Question 40

Used to control discrete operation such as steps in a batch or semi continuous process and to program interlock controls that guard against unsafe or uneconomic conditions

Answer 40

Programmable logic controllers

Question 41

Indicated on the circle represents ____ by a letter code

Answer 41

Instrument- controller

Question 42

Indicates property measured

Answer 42

First letter

Question 43

Indicates the function

Answer 43

Subsequent letters

Question 44

is used for final control elements when this is not a valve

Answer 44

Z