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1
What is the role of sensors in process control?
To execute control algorithms
To provide input signals to the controller
To record process data for future analysis
To perform data analysis
2
Which control strategy is aimed at stabilizing temperatures, pressures,
Override control
Safety control
Unit coordination control
Interlock control
3
Why is level measurement crucial in chemical processes, and what are two common technologies used for level sensing?
Level Sensing Technologies: Float switches, ultrasonic sensors
Ensuring consistent process performance
Level Sensing Technologies: Radar level transmitters, capacitance probes
Preventing overflow and underflow situations
4
Explain the principles of temperature control in chemical processes and name two common methods used for
Ensuring product quality and consistency
No correct answer
Importance in controlling reaction rates
Control methods: Heating and cooling jackets
5
Which factor is NOT critical when selecting the sampling location within a batch or storage container?
Avoiding segregation zones
Uniformity of the material
Accessibility of the sample point
Color of the container
6
Which of the following is a primary process variable that is monitored and controlled in oil refining?
Energy consumption
Pressure in a distillation column
Ambient air temperature
Humidity levels
7
The transfer function of a process describes the relationship between:
The flow rate of chemicals in the process
The inputs and outputs of the process
The rate at which the process reaches steady state
The temperature setpoint and the process variable
8
What do objects of standardization include?
Personal beliefs and values
Products, processes (work), services
Political systems
Artistic expressions
9
Why is temperature control important during the transportation and storage of samples?
It allows the sample to be exposed to contaminants
It increases the sample size
It prevents chemical or physical changes that could affect test results
It accelerates sample degradation
10
What is the primary function of the integral term in a PID controller?
To reduce rise time
To reduce steady-state error
To increase stability
To provide overshoot
11
What does a P&ID (Piping and Instrumentation Diagram) show?
Only instrument connections
Only piping layout
Process equipment, piping, and instrumentation
Electrical connections in a circuit
12
Which of the following is true about automation?
It increases the complexity of the control system
It is only applicable in manufacturing industries
It always results in decreased efficiency
It eliminates the need for human intervention in a process
13
What is the purpose of a controller in a process control system?
To measure the temperature of the process
To monitor the process variables
To control the flow rate of chemicals
To adjust the process inputs based on feedback
14
. How is pressure regulation achieved in chemical processes, and what are two common methods for controlling pressure?
Importance in preventing overpressure situations
Control methods: Pressure relief valves
No correct answer
Maintaining system integrity and safety
15
Which of the following is NOT a function of standardization?
Facilitating product interchangeability
Enhancing product quality
Reducing economic efficiency
Guaranteeing product safety
16
Which system of units is the standard system agreed upon by scientists and mathematicians?
Metric system
SI units
English units
Imperial system
17
Which of the following control strategies is used to maintain a constant process variable?
Integral control
Derivative control
Proportional control
All of the above
18
What is the purpose of a control valve in chemical process control?
To control the flow rate of process fluids
To monitor process variables and make control decisions
To regulate the reactor temperature
To measure the flow rate of reactants
19
What is one of the largest metrological centers in Kazakhstan?
Almaty Technology Developer Center
Astana Medical University
Kazakhstan Institute of Standardization and Metrology
Kazakhstan National Museum
20
Which of the following is a safety consideration in chemical process control?
Reactor temperature control
Optimizing the production yield
Minimizing process disturbances
Preventing chemical hazards
21
What is the purpose of a safety interlock in a process control system?
To control the process inputs based on feedback
To regulate the flow rate of chemicals
To monitor the temperature of the process
To shutdown the process in case of an emergency
22
In the context of metrology, what does calibration refer to?
The legal process of verifying a company’s measurement
The study of measurements affecting the economy
The comparison of measurement values delivered by a device under test
The process of repairing a measuring instrument
23
What does sampling in the context of material analysis involve?
Selecting the best portions of material for analysis
Determining the expected precision of the total quantity
Crushing and preparing material for analysis
Combining point samples to form a general sample
24
What is the purpose of a control valve in a process control system?
To control the setpoint of the process
To monitor the temperature of the process
To measure the pressure in the system
To adjust the flow rate of chemicals in the process
25
What is the primary objective when collecting samples for laboratory testing of chemical products?
To reduce the cost of analysis by taking minimal samples
To simplify the sampling process by taking easy-to-reach samples
To ensure the sample accurately represents the whole batch or lot
To gather the largest possible quantity of material
26
What is the main purpose of a PLC in automation?
To control industrial processes in real-time
To monitor operator activities
To control lighting systems
To measure liquid levels
27
What method of sampling involves combining multiple grab samples taken at different times or locations?
Grab Sampling
Automatic Sampling
Composite Sampling
Depth Sampling
28
Which control mode continuously adjusts the manipulated variable based on the error signal?
Feedback control
Override control
Cascade control
On-off control
29
Certification aims to …
Limit international trade
Reduce product quality
Increase manufacturing costs
Confirm a product, service, or system meets specific standards
30
Which of the following instruments is commonly used in oil refining process control?
Barometer
Ammeter
Flow meter
Thermometer
31
Which sampling method involves dividing the population into distinct subgroups based on specific characteristics
Stratified Sampling
Systematic Sampling
Random Sampling
Composite Sampling
32
What is the most common type of control algorithm used in industrial automation?
On-off
Cascade
PID control
Open-loop
33
Which control mode predicts the future trend of the error based on its rate of change?
Feedback
Integral
Derivative
Proportional
34
What is the difference between an open-loop control system
An open-loop control system only has one input,
An open-loop control system is less stable than
An open-loop control system is more accurate than a closed-loop
An open-loop control system does not have feedback
35
What is the purpose of a control loop in process control systems?
To increase process variability
To maintain process variables within a desired range
To reduce the efficiency of the process
To shut down the process
36
What is a key outcome of effective standardization in the oil and gas industry?
Enhanced interoperability and safety of industry operations
Isolation of industry practices from global standards
Decreased safety on the job
Increased environmental pollution
37
What kind of sample is often taken to check chemical concentration in a batch process?
Visual sample
Electrical sample
Liquid sample
Thermal image
38
How are very heterogeneous materials typically sampled?
By employing specialized down-hole sampling devices
By coning and quartering to reduce sample size while preserving representative character
By using pneumatic or electrical pumps
By collecting samples manually with glass vessels
39
A ______ manipulates the flow of utilities, ingredients or in-process streams, compensating for load
Control valve
Pump
Controller
Sensor
40
Which of the following is a common method for measuring the level of liquid in a tank in oil refining?
Manometer
Spectroscopy
Level sensor
Tachometer
41
What is the main disadvantage of a PID controller?
It has a slow response time
It is not very accurate
It has a high cost
It is difficult to tune
42
What is the role of a level measurement in the control of oil refining processes?
To regulate temperature
To ensure proper liquid levels in vessels
To monitor environmental conditions
To adjust flow rate
43
What is a benefit of real-time laboratory data in technological process control?
Replaces quality audits
Delays production for inspection
Enables immediate corrective actions
Eliminates the need for automation
44
Which of the following is NOT an example of a primary control element in oil refining?
Manometer
Thermistor
Float level sensor
Valve
45
Explain the automation of reactor processes in the chemical industry, and name two control strategies commonly applied.
Importance in achieving desired reaction kinetics
Integration with temperature and pressure control
Ensuring product quality and yield
Control strategies: Feedback and feedforward
46
In pneumatic control systems the control valve used as final control element converts
Pressure signal to position change
Pressure signal to electric signal
Position change to pressure signal
Electric signal to pressure signal
47
What are technological objects in the context of process control, and why is their effective management crucial?
Importance in achieving production targets
Equipment and devices used in industrial processes
Integration with control systems
Dynamic behavior and variability
48
What is the main advantage of using automation in process control?
Elimination of human error
All of the above
Reduced need for trained personnel
Increased efficiency and productivity
49
What is the function of an actuator in a process control system?
To move or control a mechanism or system
To sense process variables
To transmit signals
To analyze process data
50
Reducing the volume of the ground and mixed laboratory sample while keeping the sample representative is typically by
Using spinning rifflers
Pouring through a set of riffles
Conducting coning and quartering operation
Grinding with automated techniques
51
What is a key organization for standardization in the oil and gas industry?
American Petroleum Institute (API)
International Standardization Organization (ISO)
International Maritime Organization (IMO)
The World Health Organization (WHO)
52
What method involves chemically modifying analytes to form more easily detectable or stable derivatives?
Mechanical Crushing or Grinding
Melting or Fusion
Derivatization
Cutting or Sawing
53
Which type of control system does NOT use feedback?
Open-loop control
Closed-loop control
PID control
Feedback control
54
Which of the following is an example of a sensor used in process control?
Calculator
Screwdriver
Pressure gauge
Stopwatch
55
What does include the main purpose of metrology?
Ensuring international legal compliance
Ensuring the accuracy and uniformity of measurements
Enhancing cultural exchanges
Promoting global trade
56
What is the main purpose of any measurement system?
To achieve required accuracy at minimum cost
To minimize production costs
To optimize manufacturing processes
To ensure uniformity of measurements
57
What should include a product test report?
A list of company shareholders
Marketing strategies for product promotion
Detailed results of tests conducted to verify compliance with
The manufacturer’s profit margins
58
What is the main risk of not properly mixing a heterogeneous sample before laboratory testing?
Biased results due to sample heterogeneity
Easier sampling procedure
Increased testing cost
Faster sample processing
59
What are key considerations in implementing proper sample storage procedures to ensure sample integrity and analytical?
Redundant storage options and controlled environmental conditions
Use of designated personnel for storage and minimal temperature control Regular monitoring of c
Regular monitoring of container integrity and routine sample degradation
Lack of security measures to encourage easy access for all personnel
60
What is the purpose of a process variable in process control?
To measure a specific aspect of the process
To introduce errors into the system
To reduce the complexity of the system
To shut down the machinery
61
Define measurements in the context of chemical processes and provide three types of measuring instruments.
Applications: Level indicators, pH meters
Applications: Flow meters, mass spectrometers
Applications: Pressure gauges, temperature sensors
Types: Analog and digital instruments
62
Which of the following is an example of a closed-loop control system?
A light switch
A traffic light
A thermostat controlling room temperature
A battery-operated toy car
63
What is the primary difference between a proportional control system and an integral control system?
A proportional control system based on the current state
A proportional control system is more accurate
A proportional control system produces output based on the current state
A proportional control system processes input based on the current state
64
Which is not a primary type of quality audit?
External audit
Supplier audit
Internal audit
Financial audit
65
How does cascade control differ from feedback control in oil refining?
Feedback control is more cost-effective than cascade control
Feedback control is only used for safety measures
Cascade control does not involve multiple control loops
Cascade control adjusts setpoints based on intermediate process variables
66
What is the effect of a disturbance on a process variable?
It causes the process variable to deviate from the setpoint
It has no effect on the process variable
It causes the process variable to reach steady state
It stops the process completely
67
What is the first step in establishing a quality control plan for chemical manufacturing?
Define Quality Standards
Identify Critical Control Points
Determine Sampling Plans
Develop Quality Control Procedures
68
What role does a metrological service play in product quality management?
Providing measurement and calibration services to ensure product
Designing the product
Marketing the product
Financial auditing of the product sales
69
What is the importance of a human-machine interface (HMI) in process control systems?
To hide essential process information
To limit operator control
To provide a user-friendly way to interact with the system
To duplicate control functions
70
Discuss the importance of measuring the composition and properties of substances in chemical processes
Analytical Techniques: Nuclear magnetic resonance (NMR), infrared spectroscopy
Quality control and product consistency
Analytical Techniques: Gas chromatography, mass spectrometry
Monitoring chemical reactions
71
Which of the following is NOT a factor that is used to evaluate the performance
Speed
Accuracy
Sensitivity
Complexity
72
Why is personnel certification important in quality management?
It is a formal requirement for employment
It ensures individuals possess necessary skills and knowledge
It provides a basis for legal actions
It increases employee job satisfaction
73
What is the error signal in a control system?
The setpoint
The difference between setpoint and process variable
The controller output
The process variable
74
Which type of control system is commonly used in oil refining for controlling flow rates and pressures?
Batch control
Manual control
Open-loop control
Feedback control
75
What is a key purpose of a control loop in an oil refinery process?
To slow down production to save energy
To ensure continuous monitoring of the refining process
To minimize the efficiency of the refining process
To halt the refining process in case of emergencies
76
What type of laboratory analysis is often used to monitor pH levels in chemical processes?
Chromatography
Spectroscopy
Calorimetry
Titration
77
. What properties characterize control objects in the context of process control, and how do these properties influence
Sensitivity to disturbances
Nonlinearity and process variability
Stability and steady-state behavior
Time constants and response dynamics
78
In Kazakhstan, product and service certification schemes aim to …
Ensure compliance with national and international standards
Restrict technological innovation
Promote domestic products only
Limit foreign direct investment
79
What is the purpose of controlling the temperature in the crude oil distillation process?
To increase flow rate
To prevent equipment corrosion
To optimize product quality
To reduce energy consumption
80
What is the base unit of mass in the SI system?
Kilogram
Kelvin
Ampere
Second
81
What are the key principles underlying the building of control systems for technological facilities,
Redundancy and fault toleran
Network communication protocols
Modularity and scalability
Integration of safety interlocks
82
Which of the following is not a component of a PID controller?
Integral control
Fuzzy logic control
Derivative control
Proportional control
83
Discuss the basic concepts of chemical and technological process control and how they contribute to the
Setpoints and reference values
Role in achieving desired product quality
Feedback and feedforward control strategies
Closed-loop systems and stability
84
Which of the following would be considered an input variable in a process control system?
All of the above
Pressure
Flow rate
Temperature
85
In a chemical process, what does the term “setpoint” refer to?
The time required for the process to reach steady state
The rate at which chemicals are added to the process
The maximum allowable temperature in the process
The desired value of a process variable
86
What is the purpose of feedback in a control system?
To measure the output and compare it to a desired value
To ensure that the control system operates at maximum speed
To provide an initial input to start the process
To prevent any changes in the process
87
Which sampling technique is best suited for a continuous liquid product stream to ensure representative samples?
Composite sampling
Grab sampling
Stratified sampling
Random sampling
88
What does the term "party" refer to in the context of chemical analysis?
A specific location for sample extraction
A batch or lot of material produced under similar conditions and timeframe
An event where samples are distributed for testing
A gathering of analysts for sample collection
89
Which of the following is a key benefit of implementing advanced process control (APC) in oil refining?
Decreased production efficiency
Improved process stability and performance
Higher greenhouse gas emissions
Increased energy consumption
90
. What is a crucial consideration in sample pre-treatment procedures for chromatographic analysis?
Avoiding the use of internal standards or standard addition methods
Ensuring quantitative recovery of analytes and reproducibility when recovery is not 100%
Maximizing the number of pre-treatment steps for enhanced accuracy
Achieving 100% recovery of analytes in the final injected sample
91
Which of the following is NOT a common type of process control system?
Proportional-integral-derivative (PID) control
Manual control
On-off control
Feedback control
92
Transducer, which converts electrical charges caused by pressure
Thermocouple
Strain gauges
Piezoelectric
RTD
93
Which type of control system continuously adjusts the process based on feedback?
Open-loop system
Batch control system
Closed-loop system
On-off control system
94
What should be done if a sample taken for laboratory testing is found to be non-representative or contaminated?
Discard the sample and take a new representative sample following proper procedures
Use the sample but increase the number of tests
Dilute the sample to reduce contamination effects
Proceed with testing regardless
95
What are the main purposes of the SCADA system?
Monitor
Display and control
Control, run
Monitor, supervise, control and display
96
What is the importance of labeling samples immediately after collection?
To allow the sample to degrade before testing
To reduce the sample volume
To ensure the sample is visually appealing
To prevent mix-ups and ensure traceability during testing
97
When sampling a solid bulk product, what is a common practice to reduce the sample size while maintaining?
Taking samples only from the surface
Coning and quartering
Using only the finest particles
Mixing and homogenizing the entire batch first
98
In the realm of chromatographic analysis, what is a common technique used for analyzing gaseous samples, particularly
Microwave-assisted extraction
Canister collection
Liquid-solid extraction
Direct sampling via sample loops
99
Explain the fundamentals of the theory of automatic regulation and how it applies to maintaining stability in chemical.
Role of sensors in feedback loops
Proportional-Integral-Derivative (PID) control
Control algorithms for dynamic systems
Importance of setpoint adjustments
100
What is the main mission of the State Institution “Committee for Technical Regulation and Metrology of the Ministry of
Integrating the Kazakhstani economy into the world economy
Developing and improving legislative frameworks
Ensuring safety of products, services, and processes
Harmonizing regulations with international requirements
101
Which control strategy involves turning a device on or off based on the process variable reaching a threshold?
Proportional control
Override control
On-off control
Feedforward control
102
What is the function of a distributed control system (DCS) in process control?
To distribute control functions throughout a facility
To concentrate control functions in a single location
To centralize all safety systems
To limit access to control parameters
103
A PID controller continuously adjusts the control output in response to the:
Setpoint
Derivative control action
Proportional control action
Process variable
104
What role does sample preservation play in laboratory testing?
It prevents changes in the sample’s composition before analysis
It reduces the cost of the analysis
It is optional if testing is done quickly
It is only necessary for volatile liquids
105
Standardization primarily aims to …
Decrease production efficiency
Promote individual craftsmanship
Ensure products and services meet minimum safety and quality standards
Limit international trade
106
What is one of the main goals of standardization?
Increasing production efficiency
Facilitating mutual trade
Developing specialization and co-production
Ordering activities with the participation of stakeholders
107
Which factor is NOT typically considered in the tuning of control loops for oil refining processes?
Process fluctuations
Process dynamics
Equipment wear and tear
Safety regulations
108
What is the purpose of a safety instrumented system (SIS) in oil refining?
To control environmental pollution levels
To govern community relations
To maximize production output
To ensure safe operation by reducing risks
109
Which of the following best describes automation in a refinery?
Data logging for maintenance purposes
Remote surveillance only
Use of control systems to manage processes automatically
Manual adjustments made by operators
110
What are primary measuring transducers, and how do they play a crucial role in the main technological processes?
Examples: Pressure transmitters, thermocouples
Importance in accurate data acquisition
Converters of physical quantities to electrical signals
Link between process variables and control systems
111
What is the control action of the float level controller?
A rise in level in the tank causes driver roller to
May operate through purely mechanical means
Provides the means of obtaining a controller with high sensitivity
Proportional and the proportional sensitivity can be changed
112
What is the primary purpose of process control in oil refining?
Slow down the refining process
Increase production costs
Ensure safety and efficiency
Reduce the quality of refined products
113
Enumerate and briefly explain two typical systems of automatic control used in technological processes.
Programmable Logic Controller (PLC)
Supervisory Control and Data Acquisition (SCADA)
Distributed Control System (DCS)
Model Predictive Control (MPC)
114
. Explain the concept of transmitting measuring transducers and provide two examples used in chemical process industries
Examples: HART communication, Profibus
Examples: 4-20mA current loops, Fieldbus protocols
Transmitting data to control systems
Enhancing communication reliability
115
How can sample testing help prevent equipment damage in production?
By detecting abnormal process conditions
By analyzing labor market trends
By monitoring social media
By checking for unauthorized employees
116
Which system gathers real-time data from sensors and controls processes remotely?
SCADA
DCS
PLC
SIS
117
Disadvantages to using an on/off controller scheme:
Can generate noise when seeking stability
Inefficient (using this control is like driving with full gas
All answers are correct
Physically wearing on valves and switches
118
What is the purpose of an actuator in a control system?
To measure the input to the system
To measure the output of the system
To control the system
To actuate the system
119
What are physical and chemical parameters of substances, and how are they measured in chemical processes?
Chemical Parameters: Concentration, pH
Instruments: pH meters, conductivity sensors
Instruments: Viscometers, refractometers
Physical Parameters: Density, viscosity
120
Which of the following is a direct application of laboratory data in process control?
Hiring new operators
Changing company branding
Expanding product line
Adjusting raw material feed rates
121
How is the regulation of devices for mixing liquids and gases achieved in chemical processes, and what are two methods
Achieving proper reaction kinetics
Control methods: Sparging and bubbling
No correct answer
Importance in homogeneous product composition
122
What is a common error in air sampling?
Lack of consideration for meteorological factors.
Discrepancy between sample composition and analyzed air medium.
Inadequate selection frequency based on hazard class.
Overreliance on short sampling periods. E) Failure to select suitable absorption medium.
123
Which unit is not part of the SI base units?
Kilogram
Second
Celsius
Meter
124
How is level control achieved in chemical processes, and what are two methods used for maintaining the desired level?
Ultrasonic level measurement for accuracy
Control methods: Proportional-Integral-Derivative (PID)
Control methods: On-Off control
Importance in preventing tank overflow or draining
125
What is NOT a step in maintaining equipment in chemical manufacturing?
Implement a supplier evaluation system.
Develop a maintenance schedule based on manufacturer’s recommendations.
Conduct regular inspections to identify potential issues.
Keep detailed records of equipment maintenance and repairs.
126
The difference between the set point and the measured signal is known as?
Bias
Gain
Response
Error
127
Explain the dynamic characteristics and control features of typical processes and devices in chemical technology
Overdamped and underdamped systems
Response time and time delays
Control features: Feedforward and feedback
Interaction between process variables
128
What are key considerations and methods for sampling organic products to ensure representative samples and compliance wi
Properly selecting sampling methods, minimizing contamination risks, and complying with regulat
Ignoring homogeneity due to the inherent consistency of organic products
Disregarding regulatory standards and guidelines for organic products
Using contaminated sampling equipment to enhance variability
129
Why are control loops important in refinery automation?
They are only used for safety systems
They eliminate energy consumption
They ensure stable and efficient process operations
They reduce the need for valves
130
What is the disadvantage of on-off control?
It causes oscillations
It requires PID tuning
It is too complex
It is too slow
131
What does tuning a controller mean?
Adjusting parameters to achieve desired response
Calibrating the transmitter
Programming the actuator
Replacing sensors
132
What considerations are involved in the constructive design of reaction devices, and how does it impact the overall
Scale-up considerations
Material selection and corrosion resistance
Mixing efficiency and agitation design
Heat transfer mechanisms and jacketing
133
Which of the following components receives the output from the controller and acts upon the process?
Final control element
Sensor
Controller
Transmitter
134
What are some common objectives of standardization?
Maximizing individual creativity
Enhancing cultural diversity
Improving safety and competitiveness
Promoting artistic expression
135
Which of the following is an example of a process variable?
Power supply voltage
Fluid level in a tank
Control valve size
Controller output
136
Inspection control as part of quality audits aims to …
Evaluate employee performance for annual reviews
Check the company’s financial transactions for fraud
Assess compliance with laws and regulations
Monitor and verify the quality of the product or service at
137
Discuss the significance of automatic monitoring and alarm systems for the liquid level in chemical processes
Prevention of safety hazards
Real-time notification to operator
Integration with emergency shutdown systems
Early detection of abnormal levels
138
What is the typical first step after receiving lab results indicating a deviation from standards?
Ignoring the results
Notifying media outlets
Replacing the entire production line
Adjusting process parameters
139
Which tool or device is commonly used to take liquid samples from pressurized tanks without depressurizing the system?
Valve-operated sampling bottle
Riffle splitter
Scoop
Pipette
140
Which of the following is NOT a modern method of product quality management?
Just-in-Time Manufacturing
Total Quality Management (TQM)
Randomized Control Trials
ISO 9001 Standards
141
How can sample contamination be minimized during product sampling for laboratory analysis?
Mixing the sample with unrelated materials
Storing samples in open containers
Sampling near heat sources
Using clean, inert sampling tools and containers
142
Which parameter is commonly monitored in lab tests to detect contamination in a fluid process?
Conductivity
Package labeling
Color coding
Barcode scanning
143
A technical standard can be defined as …
A medical protocol for disease diagnosis
An official guideline that ensures products, services, and systems are safe
A financial benchmark for stock exchanges
A historical document detailing ancient engineering techniques
144
What is meant by setpoint in a process control system?
The location of the controller
The error signal in a control loop
The lowest point in the process
The desired value for a process variable
145
Enumerate three general automation tools commonly used in chemical process control systems and their specific.
Machine Learning algorithms E) Data Historians
Programmable Automation Controllers (PAC)
Industrial Internet of Things (IIoT) devices
Human-Machine Interface (HMI) software
146
What is the purpose of column conditioning in the solid phase extraction (SPE) process?
To ensure analytes are free in solution
To remove unwanted particulates via filtration or centrifugation
To prepare the sorbent for effective interaction with the compounds of interest
To adjust sample/matrix composition for proper dilution/ionic strength
147
Why is it important to adjust the technological process based on laboratory analysis results?
To comply with HR policies
To train laboratory technicians
To improve product consistency and process efficiency
To increase marketing reach
148
What is the purpose of secondary and control devices, and how are they classified in the context of process control sy
Linking with safety interlocks
Classification: Recorders, indicators
Classification: Alarms, controllers
Enhancing control system functionality
149
What are some key reasons why standards are important in the oil and gas industry?
Encouraging environmental degradation
Promoting technological stagnation and inefficiency
Improving safety, reliability, and efficiency
Ensuring international trade barriers
150
What is the function of a transmitter in a process control system?
To send signals from sensors to controllers
To analyze the process performance
To regulate output from the actuator
To transmit data wirelessly only
151
What is the purpose of a control algorithm in process control?
To eliminate safety measures
To increase process variability
To provide the system’s control strategy
To analyze historical data only
152
In the context of oil refining, what does the term ‘cracking’ refer to?
Temperature monitoring
Increasing pressure in distillation columns
Adding catalysts to the process
Breaking down large hydrocarbon molecules
153
Which of the following is true about a supervisory control and data acquisition (SCADA) system?
It provides real-time monitoring and control
It is used for manual control only
It is primarily used for small-scale applications
It does not require communication networks
154
What is the initial step in any specific analytical determination regarding the test portion?
Averaging series of "burns" at diverse locations on a solid
Weighing a mass or transferring a volume
Calculating laboratory sampling constant (K)
Using spectrometric methods for solid samples
155
Which type of control strategy anticipates changes in process variables?
PID control
Feedforward control
Feedback control
On-off control
156
Metrology is the science of:
Measurement
Social studies
Economics
Biology
157
Why is feedforward control used in conjunction with feedback control in oil refining?
To simplify operator intervention
To account for disturbances before they affect the process
To increase energy consumption
To act as a backup system in case of control failures
158
What is a key participant in the certification process?
Competitors
The manufacturer
The consumer
Unrelated third-party businesses
159
What are some critical considerations for ensuring the integrity of samples during transportation in the context of
Exposing light-sensitive samples to direct sunlight during transport
Handling samples with minimal regard for physical damage or contamination
Using insulated containers and ice packs to prevent temperature fluctuations
Choosing containers made of reactive materials such as aluminum or copper
160
Which of the following is an advantage of process control and automation?
Decreased process efficiency
Increased human error
Higher production costs
Improved product quality and consistency
161
What is the fundamental concept behind building automatic control systems for chemical technology processes?
Redundancy and fault tolerance
Network communication protocols Integration of safety interlocks
Modularity and scalability
Integration of safety interlocks
162
What do the main tasks include of modern metrology?
Ensuring the uniformity of measurements
Studying ancient cultures
Designing marketing strategies
Historical research
163
Which of the following is crucial for effective process control in oil refining?
Continuous manual intervention
Reliable process instrumentation
Random adjustments to setpoints
Use of outdated control systems
164
Which process parameter is commonly controlled in the distillation unit of an oil refinery?
Flow rate
pH level
Temperature
Pressure
165
. What is a key advantage of solid phase extraction (SPE) over other techniques like protein precipitation (PPT)
Concentration of the analyte.
Improvement of sensitivity and selectivity.
Automation and usage of smaller solvent volumes.
Removal of interfering compounds and transfer into suitable solvents.
166
Which of the following is a potential challenge in chemical process control?
Equipment failure
All of the above
Process variability
Safety hazards
167
How do conformity assessment modules in EU countries primarily benefit products?
By restricting competition
By limiting product availability
Through higher taxation
By ensuring products meet EU standards for safety and performance
168
Which of the following is an example of a process disturbance in chemical manufacturing?
Changes in reactor temperature
Changes in reactor pressure
Fluctuations in feed flow rate
Variations in product demand
169
What role does a human-machine interface (HMI) play in process control for oil refining?
Physically adjusting control valves
Initiating emergency shutdown procedures
Providing a visualization of the process
Controlling temperature inside the refinery
170
Which of the following is an example of a safety measure in process control?
Temperature controller
Setpoint adjustment knob
Emergency stop button
Feedback control loop
171
Which of the following best describes the concept of ‘certification’ in quality management systems?
A process of financial restitution
The act of verifying that a product, service, or system meets
A method for determining price points
The legal authorization to sell in a specific market
172
A quality audit can be defined as …
A public opinion survey about product quality
A systematic examination of a quality system carried out by
An environmental impact assessment
A financial audit of a company’s earnings
173
In which scenario is “grab sampling” most appropriate for laboratory testing?
When continuous monitoring is needed
When combining multiple samples into one
When the product is homogeneous and well-mixed
For large-scale bulk solid sampling
174
In pneumatic systems the medium used is
Oil
Hydrogen
Air
Liquid
175
Explain the significance of measuring pressure and temperature in chemical processes, and name two
Temperature Measurement Methods: Thermocouples, RTDs
Pressure: Ensuring vessel integrity
Pressure Measurement Methods: Bourdon tube, strain gauge
Temperature: Impact on reaction kinetics
176
Which of the following is a common challenge in process control for oil refining operations?
Maintaining stability in control loops
Low variability in process parameters
Inability to monitor processes remotely
Lack of advanced technology
177
What was the main goal behind the creation of the Republican State Enterprise “Kazakhstan Institute of Metrology”?
Performing high-precision measurements for industries of the economy
Gaining international confidence in the accuracy and reliability
Creating regional centers for metrological servicing of enterprises
Creating a strong regulatory framework harmonized with international requi
178
Providing supplementary information for d cision-making efine executive devices in the context of process control
Devices that carry out control actions
Examples: Variable frequency drives (VFD), motorized dampers
Examples: Control valves, actuators
Influencing process variables
179
What are the key aspects of automation in thermal processes, and how does automation enhance the efficiency of these?
Control methods: Temperature controllers
Optimizing energy consumption
Integration with combustion control systems
Ensuring safety in high-temperature operations
180
Which control mode reduces the error over time by adding up past errors?
Integral
Feedforward
Derivative
Proportional
181
Why is the size of the laboratory sample important in product testing?
Larger samples are always better for precision
Sample size has no effect on test outcomes
Sample size affects the representativeness and accuracy of the test results
Smaller samples reduce the testing time but may cause inaccurate results
182
Enterprise quality system certification confirms that …
The enterprise’s products are popular
The enterprise pays taxes regularly
The enterprise has a certain number of employees
The enterprise’s management system meets specific quality standards
183
What is the structure of a control system, and how are control systems classified in terms of their architecture?
Integration with information systems
Classification: Decentralized control systems
Components: Sensors, controllers, actuators
Classification: Centralized control systems
184
How is the control valve position typically adjusted in a process control system?
Through a feedback mechanism
By changing the setpoint
Manually by operators
Automatically by a central computer
185
Discuss the regulation of composition and quality parameters, with a focus on pH regulation in chemical processes.
Ensuring chemical reactions proceed as intended
Integration with analytical instruments for continuous monitoring
Importance of maintaining desired pH levels
Use of acid or base addition for pH adjustment
186
What does the proportional control mode do?
Adjusts the output in proportion to the error
Predicts future errors
Integrates the process variable
Eliminates steady-state error
187
Which of the following control actions is used to prevent the process variable from deviating too far from the setpoint?
Derivative control
Proportional control
Feedback control
Integral control
188
What are the basic concepts of process control, and how do they contribute to the optimization of industrial operations?
Feedback and feedforward control strategies
Closed-loop systems and stability
Adaptive control for changing conditions
Setpoints and reference values
189
What does the term ‘loop tuning’ refer to in process control?
Replacing faulty components
Calibrating a sensor
Setting up manual controls
Adjusting controller parameters for optimal performance
190
What may be required for the analysis of an entire solid sample, and what technique is commonly employed for further
Dilution with a weak acid and direct injection into GC
Digestion with a strong acid and further treatment to isolate components
Extraction with a mild solvent and immediate injection into the instrument
Additional solidification techniques and direct injection into HPLC
191
What role does a control valve play in the regulation of fluids in oil refining processes?
It controls temperatures
It adjusts flow rates
It measures level parameters
It monitors pressures
192
What is the main purpose of a transducer in a process control system?
To convert a physical quantity into an electrical signal
To regulate process variables
To analyze data internally
To control the setpoint
193
Why personnel certification is critical?
It is a legal requirement for all job positions
It guarantees higher salaries
It ensures individuals are qualified for their specific roles
It focuses on personal hobbies and interests
194
Discuss the significance of process control systems for technological objects, and name two key components in their.
Ensuring real-time monitoring and adjustment
Components: Programmable Logic Controllers (PLC)
Components: Sensors and actuators
Integration with Distributed Control Systems (DCS)
195
What is the purpose of alarms in a process control system?
To adjust the setpoint
To alert operators to abnormal conditions
To control temperature
To shut down equipment
196
Which of the following is an example of a final control element in a process control system?
Controller
Sensor
Transmitter
Actuator
197
Which of the following best describes “incremental sampling”?
Sampling only the top layer of the product
Sampling the product after the entire batch is processed
Sampling small portions from different parts of the batch and combining them
Sampling from a single point only
198
In the context of process control, what does the acronym ‘PID’ stand for?
Progressive Industrial Design
Programmable Input Data
Proportional-Integral-Derivative
Process Instrumentation Diagram
199
What are the advantages of a pneumatic controller?
It is cheaper than other controllers and there is no fire hazard
It is a complex type of controller
They are handy and occupy very small space
These controllers are fast in action
200
In the context of chromatography, which of the following steps is NOT correctly described as a fundamental part of the
The storage, preservation, and transport of the sample should allow for changes in the physical
Primary sampling, where the initial sample collection is crucial for it to represent the entire
The sample preparation methodology must convert the sample into a form suitable for analysis wi
Secondary sampling involves selecting a tiny fraction of the original sample which will be used
