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ChE Design > P&ID > Flashcards

P&ID Flashcards

1
Q

Description of the nature of the process

A

Process flow sheet

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2
Q

Other terms for P&ID

A

Engineering Flow Sheet
Engineering Line Diagram

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3
Q

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

A

Specialist design groups

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4
Q

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

A

Process equipment

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5
Q

Identified by line numbers

A

Pipes

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6
Q

Line number should have

A

Pipe size and material of construction

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7
Q

Two types of valves

A

Control
Block

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8
Q

Valves are identified through ID no containing

A

Type ( symbol or code)
Size

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9
Q

3 ancillary fittings

A

Inline sight glass
Strainer
Steam traps

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10
Q

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

A

Simple process

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11
Q

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

A

T

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12
Q

Resembles process for sheet without process information

A

P&ID

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13
Q

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

A

T

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14
Q

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

A

Equipment symbols

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15
Q

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

A

F

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16
Q

Most used international standard symbols for instruments, controllers and valves

A

Instrumentation Systems & Automation Society Design Code

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17
Q

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

A

T

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18
Q

Examples of Relative elevation of the process connections

A

NPSH of Pumps
Barometric legs
Thermosyphon Reboilers

19
Q

Full details of pipe layout are shown in?

A

Piping isometric drawing

20
Q

Where does the P&ID prepared

A

CAD

21
Q

Modern control valves has final control elements and are actuated by

A

Electric motors

22
Q

Older control valves are actuated by___ using ____

A

Pneumatic Signals
Instrument air

23
Q

Device that makes something move/operate

A

Actuator

24
Q

Receives a source of energy to move something

A

Actuator

25
Q

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

A

Pneumatic

26
Q

Inclusions of P&ID

A

Process equipment
Pipes
Valves
Ancillary Fittings
Pumps
Control Loops and Instruments

27
Q

Different standards followed by some contries

A

BS 1646 in UK
DIN 19227 & DIN 2429 in Germany

28
Q

Actuator for larger valves

A

Motor actuator

29
Q

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

A

Digital & Solenoid

30
Q

Drawn to a manner distinguishable from process lines

A

Instrument connecting lines

31
Q

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

A

F

32
Q

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

A

Failure mode

33
Q

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

A

Locally Mounted

34
Q

Located in the control room

A

Main panel

35
Q

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

A

T

36
Q

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

A

Distributed control system

37
Q

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

A

Shared display

38
Q

Examples of operator interface device

A

Computer screen
Video screen

39
Q

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

A

F, the other way around

40
Q

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

A

Programmable logic controllers

41
Q

Indicated on the circle represents ____ by a letter code

A

Instrument- controller

42
Q

Indicates property measured

A

First letter

43
Q

Indicates the function

A

Subsequent letters

44
Q

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

A

Z

ChE Design (4 decks)

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