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