Midterm/q1,2,3 Mod 1,2,2a,3,4, discussions and P&ID questions ch6 7 text Flashcards
The process, in engineering units, to a electronic transmitter that has an analog lower input of 300C and an analog upper value of 500 C would be:
A) LRV = 0 % URV = 100 %
B) Zero = 300 C Span = 200 C
C) LRV = 4mA URV = 20mA
D) LRV = 300 C URV = 500 C
D) LRV = 300 C URV = 500 C
Which of the following rules have legal force, or could be enforced in a court of law?
A) The black wire in a cable must always be connected to the negative terminal.
B) Always walk on the right side of the sidewalk.
C) A pressure relief device for a boiler must be set to open before the pressure in the pressure equipment exceeds the maximum allowable working pressure of the pressure equipment.
D) Label the balloon symbol of a differential pressure transmitter as PDT.
C) A pressure relief device for a boiler must be set to open before the pressure in the pressure equipment exceeds the maximum allowable working pressure of the pressure equipment.
Name the instrument that can indicate time stamped, historical PV data.
A) A wireless lap top with an Excel spreadsheet
B) A transmitter with diagnostics
C) A strip chart recorder
D) A process alarm
C) A strip chart recorder
What does the “P” mean in this drawing?
A) The valve has a positioner attached to it.
B) It is a pressure control valve
C) This valve flags a fails to the last known position
D) The valve ia a direct acting positive displacement type
A) The valve has a positioner attached to it.
Describe what could happen with this device.
A) it will open when the return spring fails
B) it will opens when a control signal fails
C) it will open when the process falls below the setpoint
D) it will open upon an operator manual input
B) it will opens when a control signal fails
Where would you go if you wanted to know about specific personal safe working practices on the job site?
A) Alberta Occupational Health and Safety Part 18 personal duty to risk
B) Alberta Safety Codes Act Section 65 equipment safety design
C) Alberta Safety Codes Act Section 34 safety inspections
D) Alberta Occupational Health and Safety Part 15 risk isolation
A) Alberta Occupational Health and Safety Part 18 personal duty to risk
Why must the water level not get too low in a steam drum?
A) Low water level will not produce as much steam.
B) A low water level is really an ideal condition , since the volume in the steam drum will now be filled with steam.
C) The boiler tubes could crack under excessive heat stress.
D) There is no “water level” in the steam drum. That’s why it’s called the “steam” drum.
C) The boiler tubes could crack under excessive heat stress.
A question came up about what color the ground wire should be in a service panel. We would consult:
A) CEC
B) ISA
C) NEMA
D) ISO
A) CEC
Where would you go to find information on standards for control signals?
A) ISA
B) ISO
C) IEC
D) IEEE
A) ISA
An example of a device used to produce a standardized signal from a a process variable is:
A) an I/P
B) a controller
C) a transmitter
D) a P/I
C) a transmitter
You try to connect a pipe segment to a vessel, in a Smartplant P&ID drawing, and an inconsistency shows up between the vessel and the pipe. What is the solution?
A) make sure the other end of the pipe segment is attached to something
B) add a flange to the vessel
C) use a connect to process signal line
D) use a secondary piping segment instead
B) add a flange to the vessel
In what situation would the AGA 3 standard be used?
A) To standardize the measurment of gas flow through an orifice plate.
B) To measure standardized liquid flow rates through a PD meter
C) To measure standard liquid levels and compensate for density
D) To measure the quality of gas through a meter.
A) To standardize the measurment of gas flow through an orifice plate.
If the controller generates an output signal based on the relationship of
process variable (PV) to the setpoint (SP), then we could say the process is under __________.
A) feedforward control
B) self regulating control
C) manual control
D) automatic control
D) automatic control
A process variable is defined as:
A) a measurement of how the process affects the environment
B) an external variable that will affect the process at the final stage of production.
C) the variable that is a part of the process and contributes to its overall characteristic.
D) a variable that affects the process, but is not a part of the process.
C) the variable that is a part of the process and contributes to its overall characteristic.
Under what condition would this type of device be used?
A) abnormal process value will safely shutdown this device
B) this device can be operated manually if required
C) this device will fail in the last known position
D) device will locally indicate a failed control signal
B) this device can be operated manually if required
What does the following symbol represent?
A) Current transmitter
B) Indicator
C) Input node
D) Current source
B) Indicator
What does FSHH mean?
A) Flow Switch High High means the switch senses a high flow rate and logs the event
B) Flow Switch Hold High alarm means the switch is still operable
C) Flow Switch High High means an alarm is sent and an automatic shutdown is initiated.
D) Fast Switch High High indicating a high pressure
C) Flow Switch High High means an alarm is sent and an automatic shutdown is initiated.
The variable that is used to alter the process and is typically not measured is:
A) measurement variable
B) disturbance
C) manipulated variable
D) process variable
C) manipulated variable
Which organization lists regulations that deal with Personal Protective Equipment?
A) Occupational Health and Safety Association
B) Alberta Safety Codes Association
C) Alberta Boiler Safety Association
D) Canadian Standards Association
A) Occupational Health and Safety Association
Which drawing shows the flow of information within a control system?
A) Loop drawings
B) PFD’s.
C) Functional diagrams.
D) P&ID’s
C) Functional diagrams.
All field instruments used in a loop drawing, have:
A) a fail mode indication
B) a unique ISA symbol.
C) a control loop number
D) an input and output.
D) an input and output.
Which device can be turned down?
A) a P/I
B) an I/P
C) a controller
D) a tranmsitter
D) a tranmsitter
What symbol is used, in Smartplant P&ID, to represent a “connect to process “ connection line?
A) a thin solid line
B) a dashed line
C) a heavy solid line
D) a thin solid line with flanged connections
A) a thin solid line
What window, in Smartplant P&ID, is used to potentially link future drawings together with existing drawings?
A) the OPC listed in the properties window
B) OPCs listed in the Engineering Data Editor
C) the OPC object in the catalog explorer window and its active linked partner
D) the OPC Consistency Checker window
B) OPCs listed in the Engineering Data Editor
What is a Standard?
A) A collection of rules and practical guidelines for the completion of a task.
B) A governmental order having the force of law that contains more information than that Act from which it came.
C) An accepted norm or requirement.
D) A principle or regulation that governs our conduct.
C) An accepted norm or requirement.
What is a Regulation?
A) A governmental order having the force of law that contains more detailed information than that Act from which it came.
B) A principle or regulation that governs our conduct.
C) A collection of detailed rules and practical guidelines for the completion of a task.
D) An norm or requirement generally accepted by the industry.
A) A governmental order having the force of law that contains more detailed information than that Act from which it came.
What does this symbol represent?
A) A manual augmented control valve.
B) An indeterminate failed control valve
C) A failed locked position control valve
D) An out of service control valve
C) A failed locked position control valve
What is a Code?
A) A governmental order having the force of law that contains more information than that Act from which it came.
B) A principle or regulation that governs our conduct.
C) A collection of rules and practical guidelines for the completion of a task.
D) An accepted norm or requirement.
C) A collection of rules and practical guidelines for the completion of a task.
The zero and span output for a pneumatic transmitter is:
A) zero = 3 span = 12 psi
B) zero = 0 span = 15 psi
C) zero = 3 span = 15 psi
D) zero = 4 mA span = 20 mA
A) zero = 3 span = 12 psi
What can be said about this device?
A) It is direct acting
B) It has a range of 0 to - 200 PSID
C) 200 PSID = 20 mA
D) 200 PSID = 4 mA
D) 200 PSID = 4 mA
When selecting an actuator for a control valve in Smartplant P&ID, you must:
A) select a positioner as well
B) select a P/I as well
C) select only a pneumatic actuator for the valve
D) select both items from the same category
D) select both items from the same category
What does the following acronym mean ins a P&ID document?
A/S
A) avaraging sensor.
B) analytical system
C) ac supply
D) air supply
D) air supply
What is indicated in the drawing shown below?
A) A cascade control system
B) Two standard feedback control systems running in tandem
C) A manual flow override control system
D) A redundant feedback control system
A) A cascade control system
The information inside an ISA standard instrument bubble indicates its :
A) location
B) digital characteristic
C) signal type
D) function and address
D) function and address
The Canadian Electrical Code is important to Instrumentation Technologists and Technicians because
A) It tells Instrumentation Technologists how to handle higher voltages safely.
B) Instrumentation Technologists will often be required to wire connection loops and power supplies to service panels.
C) It defines common communication standards used in many instrumentation control strategies.
D) It defines hazardous locations and the kind of instruments we can put in them.
D) It defines hazardous locations and the kind of instruments we can put in them.
What does a square root symbol inside a box, attached to a field device, represent?
A) The instrument is used to convert volume to cubic feet.
B) The instrument is used to convert flow to metric values
C) The instrument is used to remove the square root effect of the flow through the differential producer.
D) The instrument removes the square effect due to flow through a differential producer.
C) The instrument is used to remove the square root effect of the flow through the differential producer.
Where would this device be used?
A) implied flow applications
B) direct flow applications
C) differential applications
D) viscosity applications
B) direct flow applications
What is an orifice plate used for?
A) To create the differential pressure through a flow run
B) To measure the differential pressure through a flow run
C) To measure critical flow through a flow run
D) To infer flow through a flow run.
A) To create the differential pressure through a flow run
The target value of the process is called:
A) the measurment variable
B) the controller output
C) the setpoint
D) the controlled variable
C) the setpoint
Where can you find regulations for over pressure protection devices on vessels?
A) Pressure Safety Regulation Section 10
B) Alberta Safety Codes Act Section 34
C) Pressure Safety Regulation Section 38
D) Alberta Boiler Safety Association Section 10
C) Pressure Safety Regulation Section 38
What component, in a diaphragm actuated, spring return valve directly moves the valve to a fail safe condition if control is lost?
A) the I/P
B) the diaphragm
C) the spring
D) the fail open solenoid
C) the spring
What three resource windows are usually shown in Smartplant P&ID?
A) catalog explorer, engineering data editor, instrument index
B) specification sheet, catalog explorer, reference explorer
C) domain explorer, catalog explorer, drawing manager
D) catalog explorer, properties, and engineering data editor
D) catalog explorer, properties, and engineering data editor
What organization sets standards for flange dimensions?
A) CSA
B) ANSI
C) ISA.
D) ABSA
B) ANSI
The process between the LRV and URV ranges so that the transmitter produces an increasing, non linear output. Select the correct statement.
A) the gain of the transmitter changes with the change in the range
B) the process is probably liquid level in a vertical cylindrical vessel
C) the 4 mA and 20 mA values will not correspond to the LRV and URV of the process due to the non-linearity
D) the process is direct acting and has a linear gain
A) the gain of the transmitter changes with the change in the range
What does this symbol represent?
A) A generic metering device
B) A metering point
C) A motor
D) A magnetic flowmeter
D) A magnetic flowmeter
What is a PSV and what is it’s main purpose?
A) a pressure switch valve used to control pressure.
B) a pressure safety valve used to relieve an overpressured system.
C) a pressure solution valve used to mix liquids.
D) a pressure solvent valve used to redistribute hazardous liquids.
B) a pressure safety valve used to relieve an overpressured system.
Fill in the missing word. An Act is a ___________ passed by parliament to provide for a safe working environment.
A) regulation
B) code
C) standard
D) law
D) law
What will FT-42 do if the flow decreases through the compressor ?
A) it will produce a decreasing non linear signal to FY42a
B) It will produce a decreasing linear signal to FY42a
C) it will sense a reduced flow and safely shutdown the compressor through FY42b
D) It will produce an increasing non linear signal to the controller
A) it will produce a decreasing non linear signal to FY42a
What type of drawing typically illustrates the failure mode of a control valve?
A) Loop diagram
B) Functional diagram
C) P&ID
D) Process Flow Diagram
A) Loop diagram
What is the main difference between Smartplant P&ID and Visio?
A) Both are identical except for the name.
B) Smartplant P&ID is a stand alone program while Visio is server based.
C) Visio is a rules based program; while Smartplant is a stand alone program.
D) Smartplant P&ID is a server, rule based progam; while Visio is a stand alone program.
D) Smartplant P&ID is a server, rule based progam; while Visio is a stand alone program.
Which symbol indicates a logic function that would be indicated on a main control panel?
A) B
B) A
C) D
D) C
C) D
What final control element prevents surging?
A) PDT 42
B) FV-42
C) FT 42
D) FE 42
B) FV-42
Select the correct description for the following drawing:
A) Loop 301 is a pneumatic control loop, with a reverse acting transmitter and a positoner operated control vavle.
B) Loop 301 is a pneumatic control loop, sending out a 3-15 psig signal to a positioner controlled ball valve.
C) Loop 301 is a pneumatic control loop, with a direct acting transmitter using a 15 psig air supply
D) Loop 301 is a pneumatic control loop, sending 3-15 psig to a positioner controlled globe valve.
B) Loop 301 is a pneumatic control loop, sending out a 3-15 psig signal to a positioner controlled ball valve.
What does this symbol represent?
A) Automatic Shutdown Valve.
B) Pressure Bypass Valve
C) Manual Control Valve.
D) Pressure Regulator
D) Pressure Regulator
Variable speed drive motors are examples of what part of the process control loop?
A) process energy input
B) process energy output
C) flow controller
D) final control element
D) final control element
The LRV and URV of a process that ranges from 100 C to 700 C, and is represented by a standardized 4-20 mA electronic transmitter. What is the transmitter output, to one decimal place, if the process temperature is 350 C?
10.7 mA
What is the process variable in the control system illustrated below?
A) chlorine supply
B) effluent
C) influent
D) chlorine concentration
D) chlorine concentration
Refer to the previous question. Why is a motor driven valve used?
A) It provides more power to move the valve stem
B) It allows a slow accurate movement of the valve stem
C) limit switches can be wired directly to the valve
D) It allows for a fast movment of the valve stem
B) It allows a slow accurate movement of the valve stem
Refer to the previous question (drawing) once again. The manipulated variable is:
A) the flowrate of the influent
B) the flow rate of effluent
C) chlorine supply
D) flow rate of chlorine supply
D) flow rate of chlorine supply
Refer back to the previous (drawing) question. The manipulated variable is measured.
A) True B) False
B) False
Refering to the drawing below (Fig 1). Which number represents the flow transmitter?
A) 6
B) 1
C) 2
D) 3
B) 1
Refering to the previous drawing (Fig 1). Which number represents the function block wherein the measured quantity is compared to the set point?
A) 3
B) 2
C) 6
D) 4
B) 2
Refering to previous drawing Fig 1. Which number represents a standard signal?
A) 5
B) 4
C) 3
D) 1
C) 3
Refer to previous drawing (Fig 1). What number represents the manipulated variable?
A) 4
B) 5
C) 3
D) 1
A) 4
What process is indicated by the following diagram?
A) A process collection system
B) A process separation system
C) A level control process system
D) A compression process system
B) A process separation system
Refer to the diagram in the previous question. What should the fail mode of the control valve be in order to protect the compressor?
A) Fail closed
B) Fail open
B) Fail open
Refer to the previous question with the vessel. Where are the OPC numbers stored?
A) Symbol Catalog
B) P&ID File Manager
C) Engineering Data Editor
D) Item Properties
C) Engineering Data Editor
Refer back to the vessel in the previous questions. Where would you obtain the vessel template for the vessel ?
A) labels-equipment
B) annotation - labels
C) labels- piping components
D) labels - equipment components
A) labels-equipment
Refer back to the previous vessel related questions. What is the purpose of the indicated control loop?
A) Maintain liquid in the vessel to a safe level.
B) Maintain a constant flow rate through the 4” pipe
C) Maintain a stable gas pressure to the compressor
D) Maintain a constant inlet flow rate
A) Maintain liquid in the vessel to a safe level.
A steam drum is 48” in diameter and the hydrostatic pressure transmitter is ranged 0% to 100 % for the full diameter. We want the transmitter to be re-ranged to read 25% to 75% of the distance around the center or datum of the steam drum. What would be the new LRV and URV in engineering units?
A) 0” to 24” increasing
B) -12” to 12” balanced
C) -24” to 24” balanced
D) 24” to 0 “ decreasing
B) -12” to 12” balanced
A remote RTD sensor is 200 ft away from a transmitter and control room. How should it be connected?
A) Connect the RTD sensor in a 3 or 4 wire configuration to a transmitter first.
B) Connect the RTD as a 2 wire configuration to a transmitter first.
C) Connect the RTD directly as a 2 wire connection to the controller in the control room
D) Connect the RTD sensor as a 2 wire connection to the transmitter and then connect a 4 wire loop to the controller
A) Connect the RTD sensor in a 3 or 4 wire configuration to a transmitter first.
What do ISA symbols represent?
A) Instrumentation
B) Process Flow
C) Measurement
D) Process Loops
A) Instrumentation
What does a square root symbol inside a box represent?
A) The instrument adds a square root function to the process signal
B) The instrument is used to add a square function to the process signal.
C) The instrument is used to remove a square function from the process
D) The instrument is used to remove a square root function from the process
D) The instrument is used to remove a square root function from the process
Pressure, level and temperature are all examples, within a defined boundary, of:
A) process variables that exhibit a span
B) disturbance variables
C) controller output variables
D) process variables that are measured only
A) process variables that exhibit a span
What maintains the height of the water level in a toilet tank after equilibrium has been achieved?
A) the action of the flapper
B) the number of times you flush the toilet, will adaptively control the level.
C) the volume of the tank is set, due to its dimensions, and once the volume of water equals this volume then equilibrium is achieved.
D) fluctuations in the city water pressure; which is tightly controller by the water department of the city.
A) the action of the flapper
What is an orifice plate used for?
A) To infer flow through a flow run.
B) To measure differential pressure through a flow run directly
C) To restrict flow thereby creating a differential pressure
D) To measure non linear flow
C) To restrict flow thereby creating a differential pressure
The following indicates that:
A) the PV responds to the output of the controller
B) the process is not properly controlled
C) there is lot of noise in the process loop
D) the control valve is fixed at 50%; which is equal to the SP
A) the PV responds to the output of the controller
