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