Gas Engineer Course

Lesson 1 • Personal Protective Equipment and Safe Working

Specifies PPE selection, inspection, and use for gas environments. Reinforces the safety culture introduced in earlier sections with practical protective measures.

Lesson 2 • Gas Industry Structure and Roles

Maps the supply chain from production to end-user and defines stakeholder roles. Contextualises where a gas engineer operates within the wider industry.

Lesson 3 • Hazard Identification and Risk Assessment

Teaches systematic identification of gas-related hazards and formal risk assessment methods. Directly supports safe decision-making in every practical task covered later.

Lesson 4 • Regulatory Framework and Standards

Introduces compulsory regulations, industry codes of practice, and technical standards governing gas work. Establishes the compliance mindset required for all subsequent practical chapters.

Lesson 1 • Pipework Installation Techniques

Covers cutting, bending, jointing, and supporting pipework to industry standards. Translates design principles into hands-on installation competence.

Lesson 2 • Internal Pipework Design Principles

Introduces pipe sizing, layout planning, and pressure drop calculations for domestic and light commercial systems. Connects network knowledge to on-site installation design.

Lesson 3 • Distribution Network Components

Identifies mains, service pipes, governors, and pressure tiers within a distribution network. Provides the system-level context needed before working on individual installations.

Lesson 4 • Purging and Pressure Testing

Details procedures for tightness testing and purging new or modified pipework before commissioning. Ensures students can verify system integrity safely.

Lesson 1 • Appliance Classification Systems

Introduces flue type categories and appliance family groupings used across the industry. Enables correct appliance identification before installation or servicing work begins.

Lesson 2 • Burner Systems and Controls

Details injector sizing, burner head design, and primary/secondary aeration adjustment. Connects combustion theory to the physical components engineers adjust during commissioning.

Lesson 3 • Combustion Chemistry Fundamentals

Explains stoichiometry, air-to-gas ratios, and products of complete and incomplete combustion. Forms the scientific foundation for appliance setup and fault diagnosis.

Lesson 4 • Domestic Boilers and Water Heaters

Examines combi, system, and heat-only boilers alongside instantaneous and storage water heaters. Provides appliance-specific knowledge required for installation and servicing chapters.

Lesson 1 • Ventilation Requirements for Appliances

Specifies permanent ventilation openings required for open-flued and flueless appliances. Directly links combustion air provision to safe appliance operation.

Lesson 2 • Flue Installation and Jointing

Covers correct assembly, support, and sealing of flue components to prevent spillage. Translates design knowledge into compliant hands-on installation practice.

Lesson 3 • Flue Performance Testing

Teaches spillage testing, draught measurement, and visual inspection of flue systems. Ensures engineers can verify safe flue operation after installation or servicing.

Lesson 4 • Flue Types and Materials

Identifies single-wall, twin-wall, flexible liner, and balanced-flue systems with their material specifications. Enables correct material selection for each appliance category.

Lesson 1 • Pre-Installation Planning and Site Survey

Covers site assessment, appliance suitability checks, and installation planning documentation. Prevents costly errors by establishing thorough preparation before any physical work begins.

Lesson 2 • Customer Handover and Documentation

Specifies handover demonstration, user instruction, and compulsory certification requirements. Completes the installation process with legally required records and informed end-users.

Lesson 3 • Commissioning Procedures

Covers lighting, setting, and verifying appliance operation to manufacturer specifications. Confirms the installation is safe and performing correctly before handover.

Lesson 4 • Connecting Appliances to Gas Supply

Details rigid and flexible connection methods, isolation valve placement, and gas rate verification. Ensures a safe, leak-free connection between pipework and appliance.

Lesson 1 • Safety Device Testing and Verification

Covers testing of thermostats, overheat devices, flame-failure controls, and pressure relief valves. Ensures all protective devices function correctly before the appliance is returned to service.

Lesson 2 • Combustion Performance Analysis

Teaches use of a flue gas analyser to measure CO, CO2, and efficiency during servicing. Provides objective data to confirm safe combustion and identify adjustment needs.

Lesson 3 • Servicing Principles and Schedules

Establishes the purpose of planned maintenance, service intervals, and manufacturer guidance. Frames all subsequent servicing tasks within a professional maintenance philosophy.

Lesson 4 • Boiler Servicing Procedures

Details strip-down, cleaning, inspection, and reassembly of boiler components to restore safe operation. Covers the most frequently encountered appliance type in domestic gas work.

Lesson 1 • Combustion and Flue Faults

Identifies causes of poor combustion, sooting, and flue spillage and links them to corrective actions. Addresses faults with direct carbon monoxide safety implications.

Lesson 2 • Ignition and Flame-Failure Faults

Diagnoses faults in spark ignition systems, pilot assemblies, and flame-sensing circuits. Covers the most common category of appliance no-heat complaints.

Lesson 3 • Component Replacement and Verification

Covers correct component sourcing, replacement procedures, and post-repair verification testing. Ensures repairs are completed to the same standard as a new installation.

Lesson 4 • Gas Supply and Pressure Faults

Covers diagnosis of low pressure, no gas, and governor faults affecting appliance operation. Addresses supply-side issues that must be ruled out before investigating the appliance itself.

Lesson 1 • Post-Emergency Reinstatement

Covers the steps required to safely return a gas installation to service after an emergency. Ensures reinstatement is as rigorous as an initial commissioning process.

Lesson 2 • Recognising and Responding to Gas Escapes

Covers detection, immediate actions, and escalation procedures for suspected gas escapes. Establishes the priority response sequence every engineer must execute without hesitation.

Lesson 3 • Carbon Monoxide Emergencies

Addresses recognition of CO poisoning symptoms, source identification, and emergency response. Covers the most serious health hazard associated with gas appliance faults.

Lesson 4 • Unsafe Situation Classification

Introduces the industry classification system for unsafe gas fittings and the required engineer actions. Provides a consistent framework for making and communicating safety decisions.