Learning Outcomes

Introduction to Air Conditioning Systems

Air Conditioning Systems

Refrigeration and AC Compressors

Components of a Reefer System

Lesson Summary

In this module, you will be introduced to the working principle of an air conditioning system, the use of psychrometric charts in managing the AC system, as well as the comfort conditions to be maintained in an AC system. You will also be introduced to the reefer compressor used onboard a merchant's vessel, the various component parts in a reciprocating reefer compressor, as well as the functional components of a reefer plant.

Compressors and Refrigerated Containers - Course Assessment

This is a free online course on the principles of air conditioning, plus types of compressors and compressor designs.

Compressors and Refrigerated Containers

This free online course on compressors and refrigeration systems teaches you about the principles of air conditioning (AC), psychometric properties of air and airflow capacity. You will learn about types of compressors and compressor designs, and be able to explain the components of a reefer container, as well as the functions of an oil rectifier, separator and dryer.

‘Compressors and Refrigerated Containers’ is a free online course that introduces you to the definition of ‘air conditioning’, how to find the relative humidity of the air, as well as the design of an air-conditioning (AC) system. The functions and applications of a psychrometric chart for solving HVAC (heating, ventilation and air conditioning) problems; wet and dry bulb hygrometers; the sling psychrometer; the dew point temperature of air; as well as latent heat of the air are all covered. You will also learn about enthalpy lines, thermal comfort, comfort zone, steam injection, humidification, humidity ratio and humidity control. Airflow and air-conditioning capacity, cabin load, the total load on AC apparatus, as well as the heat balance (HB) method and heating load estimate also form part of the in-depth material. Learn about the important points to be taken into account when heat load required calculations are done, which include transmission heat loss, solar radiation and internal heat gains. The basic components of cooling and heating systems, and the parts of direct expansion systems will also be presented.
This course then explains the operational procedures of an air-conditioning system. You will study the basic components of hydronic hot-water and all-air heating systems, as well as the parameters of air controlled by the air-handling system. This course will also teach you about the two types of air-handling systems plus the functions and types of centrifugal fans (including radial, forward and backward curved). You will get to grips with the replacement of air filter elements, functions of humidistats, as well as the contamination of ships’ air-conditioning systems by legionella bacteria, which can lead to severe lung infections. Learn about compressors, types of compressor designs, the single-stage compression process, suction and discharge valves, plus the arrangement of compressor reed and ring valves. Study reciprocating compressor efficiency in refrigeration air-conditioning systems, as well as the four processes of a non-ideal reciprocating cycle. This course will also teach you about lube oil circuit, oil for refrigeration compressors, types of refrigeration compressor lubricating oils, as well as precautions for using lubricating oil.
Furthermore, it will help you get familiar with the core component of a centrifugal compressor known as the ‘impeller’, the centrifugal compressor chart and suction. You will learn about domestic refrigeration plant layout, refrigerating chamber volume and maintenance temperature, as well as a high- and low-pressure cut-out. This course will teach you about the functions of the condenser, evaporator, economizer, as well as classifications of the evaporator. The types of heat exchangers used in refrigeration, functions of the double pipe heat exchanger, as well as the pattern of coolant flow will also be covered. You will analyze constructional features of a refrigerated container (or reefer), which include the shell and tube type, as well as heat exchanger routine and maintenance. This course will also teach you about cleaning techniques, backflushing, and manual as well as chemical cleaning of a heat exchanger. The functions of the oil rectifier and separator and liquid-line dryer will also form part of your coursework. This course is ideal for mechanics students looking into refrigeration, air conditioning and ventilation, or those wanting specialist training in compressors and refrigerated containers.

Udemy Appoints McKinsey Veteran as CEO Amid Growth Challenges

10 Best Free Rust Courses for 2025: Write Memory-Safe Code

Coursera and Udemy are Finally One. What’s Next?

Coursera’s 2025 Strategy: Focusing on Campus, Scaling Back Degrees

Open edX Conference 2024: Program & Speakers

8 Best Crochet Courses for 2025: Practical, Enriching, Creative

Open edX Conference 2026: Program, Workshops & Registration

Learn English as a Second Language (ESL) with Hundreds of Courses & Sites

Coursera Q4 2025: 197M Learners, ~$197M Revenue, ~$27M in Losses

25% of Coursera Courses Have Peer Reviews: Here Are the Best

BloomTech’s Downfall: A Long Time Coming

Coursera’s $100 Million Thesis: Andrew Ng Will Think of Something

Inside the Coursera-Udemy Deal: Three Bids, Two Years and a Rival Suitor

Exploring edX’s “Final” Tax Returns: Revenue Surges, Losses Mount, and Contributions Decline

7 Best Sketch Courses for 2025

12 Best Laravel Courses for 2026: Ship Sites Fast

Aims & Objectives of ISO/IEC 17025:2017

Accrediting to ISO/IEC 17025:2017

Main Sections of ISO/IEC 17025:2017

This module presents the fundamental aspects of ISO/IEC 17025:2017 along with its aims and objectives. The module also explains different forms of standardized verbs used throughout the standard. Moreover, you will also learn the benefits of accrediting to ISO/IEC 17025. Lastly, an overview of the section's standard is also given.

General and Structural Guidelines for Laboratories

Resource Requirements for Testing Laboratories

Contracts, Validation, Sampling & Handling

Technical Records, Uncertainty, Results Validity, & Reports

In this module, you will encounter the essential requirements given in clauses 4, 5, 6, and 7 of ISO/IEC 17025;2017. However, the explanation of Clause 7 is provided till sub-clause - 7.8. Through this module, you will learn about the general, structural, resource, and process requirements of ISO/IEC 17025:2017.

Information Management, Complaints & Nonconformities (NCs)

Management System Requirements

Taking Corrective Actions

In this module, you will see discussions on ISO/IEC 17025:2017 beginning from sub clause 7.9 that puts forward the complaint requirements put forth by the standard. Furthermore, it presents the standard's requirements regarding management systems. Moreover, it also contains necessary measures to be taken for corrective actions.

ISO/IEC 17025:2017 - Laboratory Management System- Course Assessment

Learn about laboratory management systems laid out by the ISO 17025 international standard in this free online course.

ISO/IEC 17025:2017 - Laboratory Management Systems

This short course is designed for individuals and laboratories looking forward to their standardisation. We explain management standards defined by the ‘ISO/IEC 17025 general requirements for testing and calibration laboratories competence’ devised by ISO. This comprehensive course explains all the basic and essential requirements of the standard. It also provides a simplified clause-by-clause explanation of its four main sections.

Fundamentals of Pest Control

Pest Identification and Assessment

Non-Chemical Pest Control Methods

Chemical Pest Control Methods

This module will teach you the fundamentals of pest control, types of pests and their impact, pest life cycles and behavior, factors influencing pest infestations, pest identification and assessment, non-chemical pest control methods, genetic control and sterile insect, chemical pest control methods, and integrated pest management (IPM) approach.

Monitoring and Prevention

Sustainable Pest Management

Urban and Structural Pest Control

Topics you will learn in this module include but are not limited to pest monitoring techniques, preventive measures and exclusion strategies, ecological impact of pesticides, selective pesticide use and resistance management, organic and biodynamic pest management, pest management in residential areas, and commercial and industrial pest control.

Pest Control and Management - Assessment

This free online course teaches you how to use chemical and non-chemical pest control techniques to manage infestations.

Pest Control and Management

Pests make environments unhygienic and are a major cause of diseases, some of which may be lethal and difficult or expensive to cure. Effective pest management and control are necessary to keep a living and working environment free from health hazards. This course provides the knowledge and skills required to establish and maintain a successful pest control management programme and describes various pests, their life cycles and their behaviour.

Foundations of Construction Safety Management

Safety Management for Hazardous Environments

High-risk Site Activities and Demolition Safety

This module covers risk identification and mitigation in construction work and how to evaluate and manage risk in compliance with CDM regulations. You'll also learn how behaviour affects safety on construction sites, including safety measures for scaffolding, excavation, demolition and more.

Course Assessment - Site Management Safety Training Scheme (SMSTS)

Learn how to manage safety on construction sites in accordance with UK legal provisions in this free online course.

Site Management Safety Training Scheme (SMSTS)

Construction workers are often vulnerable to injuries and hazards so ensuring safety is maintained consistently is crucial for both site managers and workers. This course covers the essential knowledge needed for maintaining safety on construction sites. You'll learn to identify and assess risks while adhering to UK industry regulations. In addition, we'll discuss safety measures to take during erecting scaffolding, excavations and demolitions.

Introduction to Hot Work

Classification of Hot Work Areas

Roles and Responsibilities

Hot Work Permit

Hot Work Risk Assessment

Essential Safety Precautions

This module will familiarize you with hot work processes, including their potential hazards and safety precautions. You'll learn how to assess the risks associated with hot work and determine appropriate control measures. You'll also understand the hot work permit system and the roles & responsibilities of those involved in the permitting process.

Hot Work Safety - Course Assessment

Learn how to manage the hazards associated with hot work processes in this free online health and safety course.

Hot Work Safety

This hot work safety training equips you with the essential knowledge to recognize and mitigate hot work hazards. You'll understand the hot work risk assessment process and hierarchy of controls for effectively reducing risks. The course explains the hot work permit system along with the roles and responsibilities of those involved in the permitting process. You'll also gain a clear understanding of hot work permitted and prohibited areas.

Introduction to Traffic Marshalling

Traffic Management

Temporary Traffic Control

Traffic Risk Assessment

Vehicle Signaling

Reversing Vehicles

Health and Safety

In this module, we will look at the fundamental objectives of traffic marshalling and the general duties of a traffic marshal. A traffic marshal's responsibilities when controlling traffic on a highway or construction areas shall be examined. Assessing risks along with health and safety concerns of traffic near construction areas will be assessed.

Construction Safety: Traffic Marshalling - Course assessment

Train as a traffic marshal or bankman who provides traffic management on construction sites in this free online course.

Construction Safety: Traffic Marshalling

This course takes an in-depth look at the role of traffic marshals on construction sites. Traffic management is important to maintaining health and safety as the presence of heavy machinery and large vehicles creates a need for the efficient direction of traffic. Traffic management in such a busy area faces hazards and safety risks, which we identify in this course. Sign up to train as a traffic marshal or bankman and add a skill to your CV.

Introduction to the AS Standards

Organization's Context and Leadership

QMS Planning and Support

This module introduces students to the AS standards for suppliers of the aviation industry. It explains the importance of regulations in the aerospace industry and navigates them through the journey of different AS standards. It also explains the requirements of Clauses 4, 5, 6, and 7 of this standard.

Organizational Operations

Operations and Evaluation

Organizational Improvement

This module explains the requirements of Clauses 8, 9, and 10 of AS9100D. These requirements are regarding organizational operations, evaluation, and continuous improvement of the organizational operations.

AS9100D Quality Management System (QMS) for Aerospace Industry - Course Assessment

Learn the requirements of AS9100D for the developers and suppliers of components for the aerospace & defense industries.

AS9100D Quality Management System (QMS) for Aerospace Industry

This course explains different clauses and their various requirements for the organizations that develop, design, or supply parts, components, and assemblies concerned with the aerospace and defense industries. After enrolling, the students will be able to navigate the differences between the different versions of the AS standards. Moreover, they will also get a simple and straightforward explanation of this standard's requirements.

Introduction to Hazardous Materials Handling - Learning Outcomes

Understanding Hazardous Materials

Legal and Regulatory Compliance

Importance of Hazard Communication

Risk Assessment and Management

Personal Protective Equipment (PPE) for Hazardous Materials Handling

Introduction to Hazardous Materials Handling - Lesson Summary

In this module, participants will have a solid foundation in understanding hazardous materials, legal and regulatory compliance, hazard communication, risk assessment, and the proper use of personal protective equipment. This knowledge is essential for creating a safe and compliant working environment in industries dealing with hazardous materials.

Hazardous Materials Storage and Transportation - Learning Outcomes

Proper Storage Practices for Hazardous Materials

Managing Segregation and Compatibility of Hazardous Materials

Emergency Preparedness for Hazardous Materials Storage

Transportation Regulations

Handling Hazardous Materials in Transit

Emergency Response Planning

Case Studies and Lessons Learned

Hazardous Materials Storage and Transportation - Lessons Summary

This module covers storing hazardous materials, segregation and compatibility, and developing emergency response plans. Learn DOT regulations, proper labelling, packaging, and security measures for transportation, best practices for loading/unloading and case studies.

Advanced Hazardous Materials Handling Techniques - Learning Outcomes

Decontamination Procedures

Confined Space Entry Protocols

Managing Hazardous Waste

Best Practices for Chemical Spill Response

Continuous Improvement in Hazardous Materials Handling

Advanced Hazardous Materials Handling Techniques - Lesson Summary

This module covers decontamination techniques to ensure health, safety, and regulatory compliance. Learn to manage decontamination zones, handle confined space hazards, and apply physical, chemical, thermal, and radiological decontamination. Develop skills in PPE selection, emergency response planning, and environmental protection.

Hazardous Materials Handling Mastery - Course Assessment

Gain expertise, ensure safety, and excel in hazardous materials handling with this comprehensive free online course.

Hazardous Materials Safety Specialist

This course covers the classification, legal compliance, and risk assessment of hazardous materials. It delves into communication standards, PPE usage, and storage guidelines. Transportation regulations and emergency response planning are also covered. Advanced techniques include decontamination, confined space entry, hazardous waste management, chemical spill response, and continuous improvement through safety audits and case studies.