ie-rgii-non-domestic-gas-safety study guide
ie-rgii-non-domestic-gas-safety · Work through your exam, one topic at a time.
The Non-Domestic Gas Safety assessment is the commercial and industrial counterpart to the domestic gas safety certification held by Registered Gas Installers in Ireland. It is aimed at installers and technicians who already work competently on domestic natural gas or LPG systems and now want to demonstrate competence on larger premises: restaurants, hotels, schools, hospitals, factories, workshops and plant rooms. The ie-rgii-non-domestic-gas-safety study guide has 9 sections and about 3,127 words.
01Legislation, Standards and the RGII Regulatory Framework for Non-Domestic Gas
This domain tests whether you can place a non-domestic job inside the Irish legal and registration framework before touching a pipe. Expect questions on who may work, which document governs when sources conflict, and what certification follows the job.
369 words, about 2 min02Properties, Combustion and Behaviour of Natural Gas and LPG in Commercial and Industrial Settings
This domain checks that you can predict how natural gas and LPG behave in a plant room, and use gas properties to calculate gas rates, air requirements and combustion products. Natural gas (methane-rich): relative density about 0.6 (lighter than air), gross calorific value around 38.9 MJ/m³, flammable range roughly 5–15% by volume in air.
354 words, about 2 min03Non-Domestic Gas Pipework Design, Sizing, Materials and Installation
This domain tests pipework from the meter or regulator outlet to the appliance isolation valve: pressure tier, sizing, materials, jointing, protection and bonding. EN 1775 govern building pipework, normally up to 5 bar MOP.
371 words, about 2 min04Commercial and Industrial Gas Appliances, Controls and Flueing
This domain examines appliance safety controls, gas trains, flue systems and the interaction between an appliance and the building it sits in. Commercial appliances normally include a flame supervision device or automatic burner control, a pre-purge and proved-air path, a safety shut-off valve train, and often high and low gas pressure switches.
338 words, about 2 min05Ventilation and Air Supply Requirements for Non-Domestic Gas Installations
This domain tests whether you can provide both combustion air and cooling/ventilation air to a plant room, and prove it with openings rather than room volume. Open-flue appliances draw combustion air from the room; room-sealed appliances take it from outside but still need ventilation for heat removal.
345 words, about 2 min06Combustion Performance Analysis, Flue Gas Testing and Carbon Monoxide Safety
This domain tests the use of a flue gas analyser and the judgement that follows: is combustion complete, is the appliance safe, and is CO reaching occupied space? A flue gas analyser reports oxygen, carbon monoxide, carbon dioxide, flue temperature and sometimes draught.
325 words, about 2 min07Tightness Testing, Purging, Commissioning and Decommissioning of Non-Domestic Gas Systems
This domain tests the sequence that turns new pipework into a safe, live installation - and the sequence that takes it out of service. After strength testing, isolate the section, fit a suitable gauge (water gauge or digital with adequate resolution), pressurise to the specified test pressure for the MOP, allow stabilisation, record the start, wait the specified duration and compare any drop with the allowable figure.
343 words, about 2 min08Gas Detection, Emergency Procedures and Safety Management in Non-Domestic Premises
This domain tests the plant-room safety layer: detectors, alarms, emergency controls and the management system that keeps them working. Natural gas detectors mount high level; LPG detectors mount low level.
355 words, about 2 min09Documentation, Certification, Handover and Records for Non-Domestic Gas Work
This domain tests the paper trail: what you certify, what you hand over, and what you keep so the next person can work safely. RGII-registered work is certified through the scheme's certificate/declaration process, appropriate to the non-domestic category and gas type.
327 words, about 2 min