Final Exam/MC/MS/TF/Calc chapters 19 20 21 22 Module 4 -7 and PID SPI material Flashcards
A hydrostatic level measurement can be obtained because:
A) A vertical column of liquid can vary its density as a function of the column height. We must
assume constant height.
B) A column of liquid exerts a pressure at the bottom of the column which is inversely proportional to the density. WE must assume constant gravity
C) A column of gas produces a pressure at the bottom of the column which is proportional to the height. This is the standard pressure called STP at sea level.
D) A vertical column of liquid exerts a pressure on the bottom of a column due to gravity. We must assume constant density.
A vertical column of liquid exerts a pressure on the bottom of a column due to gravity. We must assume constant density.
When we see an increase in heat loss in a boiler turbine, we would see:
A) a decrease in efficiency due to poor inlet water quality; which has a lower specific heat value.
B) a decrease in efficiency due to unrecoverable heat loss
C) an decrease in efficiency due to the high pressure design of the boiler
D) an increase in efficiency due to the extra heat being converted to mechanical energy
a decrease in efficiency due to unrecoverable heat loss
What is added to the basic components of a boiler to increase its efficiency?
A) a steam drum
B) a circulating pump
C) a condenser
D) a superheater
A superheater
Which SPI module would you enter process piping information in ?
A) the instrumentation index
B) the process data module
C) the calculation module
D) the specification module
the process data module
Which of the following is the smallest hydrocarbon molecule?
A) methane
B) ethane
C) butane
D) propane
Methane
An evaporator…
A) works best using natural evaporation
B) makes more efficient use of energy if done in stages
C) uses distillation to separate the solids from the liquid phase; which then can be scrapped off as a product.
D) separates liquids into constituent liquid components
makes more efficient use of energy if done in stages
Could a digital transmitter, with a 100:1 turndown, that has an upper sensor limit of 250’we be re-ranged to match a process that has a URV of 1 psi?. True or False
True
A steam turbine operates on the principle that when:
A) a super heated fluid, under pressure, is allowed to compress and release energy into the surroundings
B) a heated fluid, under pressure, is allowed to expand it will release energy into the surroundings
C) a heated fluid, under pressure, is allowed to cool it will release energy into the surroundings
D) a heated fluid, under pressure, is compressed and will release energy into the surrounding
a heated fluid, under pressure, is allowed to expand it will release energy into the surroundings
What happens to the steam, after it passes through the high pressure stage of a three stage turbine?
A) It is sent back to the super heater
B) it is recirculated back to the inlet
C) It is used to preheat the condensate
D) It is sent to the intermediate turbine
It is sent back to the super heater
Ethanol has a higher boiling point than water. True or False
False
If a PT PE PY PV and PIC all are in the same control loop then…..
A) the PT/PE and the PY/PV will be combined into two instruments for simplicity
B) all instruments will be electronic in nature
C) all the instruments will have the same function
D) all instruments will have the same loop number
all instruments will have the same loop number
Every unit operation follows this principle
A) must have a mass or energy balance
B) must produce a chemical reaction
C) must always have at least two or more inputs
D) must either produce heat or require heat
must have a mass or energy balance
You have all the process data entered into the calculation module of SPI, to do an orifice calculation. What Important factor are you calculating for in order to manufacture an orifice plate?
orifice beta ratio
Is this statement true or false
“in general science parlance, a transducer is any device that converts one form of energy into another, such as a microphone or a thermocouple. In industrial instrumentation, however, we generally use the term transmitter to describe this concept and reserve the word transducer to specifically refer to a device for standardization of instrumentation signal
False
Natural gas could produce several acids when combined with
A) carbon dioxide
B) hydrogen sulfide
C) sulfur dioxide
D) water
Water
Temperature is defined as:
A) the measure of the potential energy acquired by a molecule
B) heat energy
C) as energy of a substance due to the ambient conditions
D) measure of the average molecular kinetic energy within a substance.
measure of the average molecular kinetic energy within a substance.
Condensed water is preheated by the reheater before it is sent back to the steam drum.True or False
True
Which item does not belong in SPI?
A) specification module
B) instrument index
C) domain explorer
D) wiring module
E) process data module
F) engineering editor
G) reference explorer
H) calculation module
Engineering editor
If a river or lake is not available to cool the low pressure exhaust steam, in a boiler system then a(n) _______ can be used.
A) steam drum
B) reciprocating pump
C) condenser
D) cooling tower
Cooling tower
What resource is accessed in order to initially bring various instrument types into the drawing space of Smart Plant P&ID
A) Reference Explorer
B) Engineering Editor
C) Catalog Explorer
D) Domain Explorer
Catalog Explorer
What type of level measurement device utilizes Archimedes Principle?
A) A displacer
B) A hydrostatic level device
C) A float
D) A bubbler system
A displacer
When you right click on the inconsistencies on the drawings in P&ID, a dialog box shows up that will:
A) provide information you can use to make a change in the drawing
B) automatically correct the problem
C) be noted in the engineering edifor for future reference
D) automatically remove the inconsistency
provide information you can use to make a change in the drawing
Separation in a distillation column is due to the fact that:
A) components have different boiling points
B) components have different specific heat values.
C) components have different molecular weights
D) components have different densities
components have different boiling points
Which of the following is not a characteristic of Smartplant P&ID?
A) maintains connectivity and relationships
B) does not flag inconsistent connection items.
C) creates custom assemblies
D) provides design verification
Does not flag inconsistent connection items
Water from the condenser in a power plant boiler system is re-used. True or False
True
What else needs to be known in order to measure accurate steady state levels in a liquid storage tank, besides hydrostatic pressure?
A) Liquid inlet flow rate
B) Liquid outlet flow rate
C) Ambient pressure surrounding the vessel
D) Temperature of the liquid
Temperature of the liquid
What is the purpose of the circular component attached to the blue item?
A) it is used to compensate for static pressure effects when measuring a differential pressure
B) it is a pressure reference module, used to measure absolute pressure values.
C) it produces an un-balanced capacitive signal when a differential pressure is applied.
D) it produces a variable frequency when a differential pressure is applied
C) it produces an un-balanced capacitive signal when a differential pressure is applied.
Which word describe” a process where certain molecules from a fluid stream will move onto the surface
A) Absorption
B) Distillation
C) Adsorption
D) Desication
Adsorption
If this sensor has a measurement junction and the red and white leads must be connected to a reference junction, then the sensor is…
A) a J type thermocouple
B) a J type thermowell
C) a two wire RTD
D) a compensating resistive element
A) a J type thermocouple
What is an example of a device that allows energy to be transferred to a mass product through a medium; which must not be allowed to interact with the mass product?
a heat exchanger
If the Technician is asked to determine the liquid level in a tank and, uses a tape measure, then the level can be found by:
A) Subtracting the physical height of the tank from the reading on the tape
B) Subtracting the measurement on the tape from the physical height of the tank
C) Direct reading from the tape
D) Adding the direct measurement from the tape to the physical tank height
B) Subtracting the measurement on the tape from the physical height of the tank
Electronic field devices require..
a tag number
Orifice plates are manufactured using this data…..This resource is required before sizing
a beta ratio
Sizing a control valve will produce…
a Cv number
information can be transferred to a specification sheet.
a form number
Before we can perform an orifice plate sizing, we need to create the _____ in SPI, assuming we already have the process data
A) device panel in the wiring module
B) process data
C) tag number
D) propogation path
a tag number
Which of the following does not retain a pressure, in order to move a force bar?
A) P&ID
B) Functional drawing
C) Installation drawing
D) PFD
Flapper/Nozzle
What type of documentation is used to help an installer electrically connect various instruments together for a unit operation
loop diagram
Which piece of documentation would typically include a Bill of Materials?
Installation Drawing
Which (one or more) is(are) NOT considered a final control element:
check valve, I/P, orifice plate and controller are not final control elements
FCE’s are electric motors, pumps, control valves and a light
The most common components that are usually found in a pneumatic transmitter are:
bellows, flapper/nozzle, force bar, diaphragm
Which DCS channel would the analog device, FY-100, be connected to?
A) one of the D/I channels
B) one of the D/O channels
C) one of the A/O channels
D) one of the A/I channels
One of the A/O channels
What other information is required to convert a volumetric flow rate to a mass flow rate?
A) pressure
B) vapor pressure
C) density
D) temperature
density
Natural gas, found in the Western Canadian Sedimentary Basin, usually has the following components associated with it:
carbon dioxide, hydrogen sulfide, water vapor
Is this statement true or false?
“A simple way to diagnose a problem where we see the process variable changing erratically over time, is to place the controller in manual mode and analyze the results.”
True
What do the circled numbers mean?
A) the number of components involved and their relative importance to the overall installation
B) the inventory code for the parts; which is found in the instrument index
C) the order in which to install the components; which will avoid installation conflicts and inconsistencies
D) related to quantity and material descriptions as referenced to a Bill of Material list
D) related to quantity and material descriptions as referenced to a Bill of Material list
What is the principle of operation in the following process?
A) a temperature gradient is produced that allows components to be separated due to their unique densities.
B) the reflux is used to heat the incoming product which sets up a temperature gradient allowing the lighter components to collect at the bottom.
C) a temperature gradient is produced with highest temperatures near to the top allowing the lighter components to rise and heavier ones to drop to the bottom.
D) a temperature gradient is produced that allows components to be separated due to their unique boiling points.
D) a temperature gradient is produced that allows components to be separated due to their unique boiling points.
Which of the following will not use pressure to infer a measurement variable?
A) air pressure relay
B) reluctance cell
C) Bourdon tube
D) capacitance cell
air pressure relay
A method used in project management; which uses a Gantt chart.
Schedule
The project is reduced to smaller, more manageable sections
Work Breakdown Structure
A document that indicates the overall process
Process Flow Diagram
A piece of documentation which relates tasks to available resources
Role and Responsibility chart
This document is used for quotation purposes
Specification sheet
A document that is usually included in a manufacturer’s instrument manual
Installation Diagram
You can perform a sizing on a flow transmitter in Smartplant SPI
A) True
B) False
B) False
What information can’t be changed in the specification sheet?
A) Min and Max flow rates
B) Manufacturer and model number
C) Process connections
D) Tag number
D) Tag number
A control function could be correctly tagged as FT-100.
A) True
B) False
B) False
What is the correct description for this installation if high side is connected to the hose and the low side is open to atmosphere?
A) the transmitter has a suppressed zero
B) the black and white hose is connected to the low side of the transmitter
C) the transmitter low side has a dry leg
D) the transmitter can be correctly labelled PT-XXX
A) the transmitter has a suppressed zero
A good question to ask yourself when validating a control loop in the wiring module in SPI is:
A) Did the Al wire pair physically connect to the control system tag of the shared main control function in the DCS?
B) Did the Al and AO field instruments propagate all the way to the DCS terminal block and back again to the junction box?
C) Are all the ground wires accounted for?
D) Did the Al field device show up on the Al 8 channel I/O card in the junction box?
B) Did the Al and AO field instruments propagate all the way to the DCS terminal block and back again to the junction box?
Reciprocating compressors are designed to move
A) gas at low discharge pressures
B) liquid at high discharge pressures
C) gas at high discharge pressures
D) liquid at low discharge pressures
C) gas at high discharge pressures
What common property do each of these primary sensing devices have?
A) All cause a linear decrease in velocity as the fluid enters the sensing element
B) All cause a linear acceleration of a moving fluid
C) All cause a momentary decrease in density
D) All cause an increase in pressure as the stream lines converge
B) All cause a linear acceleration of a moving fluid
The distillation process can be accomplished using either applied heat or reduced pressure.
A) True
B) False
A) True
What does this symbol describe?
A) A discrete front mounted panel device
B) A shared auxiliary device
C) A discrete rear mounted panel device.
D) A discrete field mounted device
A) A discrete front mounted panel device
What is the advantage of using this device?
A) it is more sensitive
B) measurement will not run out of fluid for any practical pressure readings
C) it can handle greater pressures
D) differential pressure does not need to be calculated
D) differential pressure does not need to be
What else needs to be known, or assumed, if you are to infer the level of liquid in an open tank, besides pressure and density of liquid?
A) Specific heat of the liquid
B) Temperature of the liquid
C) Gravitational acceleration on the liquid
D) Mass of the liquid
C) Gravitational acceleration on the liquid
This type of symbol is commonly used to represent:
A) A discrete, auxillary instrument panel
B) A shared main control device
C) A shared, main control function
D) A shared field control device.
C) A shared, main control function
What is the most likely problem that could occur with this device?
A) These meters are sensitive to swirl which can cause inaccuracies.
B) These meters are non linear and cannot be used on custody transfer applicaitons.
C) The meter creates electomagnetic interference due to the rotating blades of the rotor; which will affect sensitive measuring equipment nearby
D) They tend to go over speed and record higher volumes than what actually passed through the
meter
A) These meters are sensitive to swirl which can cause inaccuracies.
What does this symbol represent?
A) A flanged connection to a vessel
B) A quick connection to another pipe segment
C) A break in the pipe where a socket can be welded
D) A location where two ends of a pipe are to be connected
A) A flanged connection to a vessel
What does this symbol represent? Assume flow is left to right
A) A pressure regulator sampling the upstream pressure in the regulator
B) A pressure regulator sampling the downstream pressure in the regulator
C) A safety pressure relief valve
D) A pressure regulator sampling the downstream pipeline pressure.
B) A pressure regulator sampling the downstream pressure in the regulator
What does the “P” mean in this drawing?
A) The valve has a positioner attached to it.
B) The valve ia a direct acting positive displacement type
C) This valve flags a fails to the last known position
D) It is a pressure control valve.
A) The valve has a positioner attached to it.
Where would this device be used?
A) viscosity applications
B) differential applications
C) direct flow applicaitons
D) implied flow applications
C) direct flow applicaitons
What does this symbol represent?
A) A magnetic flowmeter
B) A metering pont
C) A motor
D) A generic measurement device
A) A magnetic flowmeter
The following is described as:
1) fail open diaphragm actuated control valve
2) fail open, piston actuated valve
3) fail closed, diaphragm actuated valve
4) fail open, manual valve
1) fail open diaphragm actuated control valve
What does this symbol mean?
A) A logic function
B) an auxiliary function
C) a shared function
D) a field device
A) A logic function
What does this symbol mean?
A) Compressor
B) Expander
C) Turbine
D) Vortex cooler
A) Compressor
What does this symbol represent?
A) turbine
B) reciprocating compressor
C) centrifugal pump
D) positive displacement pump
C) centrifugal pump
How can a suppressed zero installation, using a dry leg, be converted to an elevation zero installation without changing the transmitter location?
A) Fill the dry leg with a liquid that has a higher SG than the process
B) Maintain the dry leg and fill the S leg with a higher SG fill fluid
C) Fill the low leg with nitrogen
D) Create a vacuum in the dry leg
A) Fill the dry leg with a liquid that has a higher SG than the process
An example of this industrial process would be:
A) a dryer
B) a heat exchanger
C) a reactor
D) a pump
D) a pump
Refer back to the previous diagram. Which statement is true?
A) F-104 is a cascade control loop controlled by a remote setpoint.
B) F-104 is a cascade control loop with setpoint changes entered into FIC-104 directly by the operator.
C) F-104 is a safety shutdown loop
D) F-104 is a metering loop used to totalize the amount of product and report the totals on a regular basis, via the Report System Portal (RSP)
A) F-104 is a cascade control loop controlled by a remote setpoint.
Which tag describes the component that is used for basic process control?
A) ZSO–103
B) FSV-103
C) FCV-104
D) XV-103
C) FCV-104
Refer back to the previous diagram. What is the purpose of the 3 way solenoid valve, XV-103?
A) Will ensure the valve fails open
B) Will keep the air pressure in the piston actuator during and emergency shutdown
C) Will release the air pressure from the piston actuator during an emergency shutdown
D) Will ensure that the valve remains in its last position during an emergency, so that the process can continue where it left off after the emergency is over.
C) Will release the air pressure from the piston actuator during an emergency shutdown
Refer to the previous diagram. What is the purpose of ZAC 103?
A) It produces a confirming, valve position signal to the operator
B) It produces a zeroing analog signal to home the control valve.
C) It produces and audible alarm when the valve stem moves from an initial to its final position.
D) It forces the control valve to either open or close under the direction of the operator.
A) It produces a confirming, valve position signal to the operator
Refer to the previous question (drawing ). What standard symbology mistake do you notice?
A) that the FSV-103 valve should be labelled FO - ATO
B) the connection symbol between FIT-104 and FE-104 is incorrect.
C) FY-104 output should be a dashed line
D) the ZSO-103 should be linked to the piston actuator air inlet port rather than the stem.
B) the connection symbol between FIT-104 and FE-104 is incorrect.
Refer back to the previous diagram. FVC-104 states it is ATO. What does this mean?
A) Air to open during normal operations. No fail mode mentioned.
B) Air to open during an emergency and normal operations
C) Air to open during an emergency condition only
D) Air to open during normal operation. Fail closed under an emergency
D) Air to open during normal operation. Fail closed under an emergency
What advantage does a coplanar capacitance pressure module have over a similar traditional type?
A) easier to connect to a five valve manifold
B) has a fast response time
C) uses less fill fluid
D) flange bolt stress is eliminated
D) flange bolt stress is eliminated
What is the correct order of unit operations in the following reversible process ( insert numbers only )?
______ 1
______ 4
______ 1
______ 2
4
1
2
3
A process has a LRV = 0% and a URV = 100% and is sensed by a reverse acting, electronic 4-20 mA level transmitter. What is the transmitter output when the process is 60.00 % ?
10.4 mA
What is the gain of an electronic 4-20 mA transmitter that has a LRV = -90 psi and a URV = 150 psi when the process is 50 psi to 3 decimal places?
0.067 mA/psi
What is the zero and span for a process that ranges from -300C to 500C ?
A) zero = 0 C span= 800 C
B) zero = -300C span 8000
C) zero = -300C span = 500C
D) zero = 0 C span = 500 C
B) zero = -300C span 8000
What input air pressure value is required to close a 3-15 psi reverese acting, pneumatic control valve to 60 % stem travel?
7.8 psi
Where would this be located?
A) Attached to a valve positioner
B) Located for Operator accessibility
C) Connected to a junction box in the field
D) Connected to a flow sensing device in the field
B) Located for Operator accessibility
Which primary sensory element (PSE) is attached to this measurement component, then it would be used to measure?
A) an implied density value
B) an elevated zero in a tank application
C) an absolute pressure value
D) an implied flow value
An implied flow value
Select the correct statement for the above drawing:
A) Loop 301 is a pneumatic control loop, sending out a 3-15 psig signal to a piston controlled ball valve.
B) Loop 301 is a pneumatic control loop, with a direct acting transmitter using a 15 psig air supply
C) Loop 301 is a pneumatic control loop, with a reverse acting transmitter and a positioner operated control valve.
D) Loop 301 is a pneumatic control loop, sending 3-15 psig to a positioner controlled globe valve.
A) Loop 301 is a pneumatic control loop, sending out a 3-15 psig signal to a piston controlled ball valve.
What are the typical measurement units that are used in this device if the applied pressure and vented connections are placed across a restriction in a pipe?
A) absolute “ wc
B) absolute kPa
C) differential “wc
D) gauge “wc
C) differential “wc
This instrument will be used to measure…
A) process flow
B) gas pressure
C) process temperature
D) liquid level
D) liquid level
