112+ Free RGII 5-Year Competency Assessment Practice Questions

Prepare for the RGII 5-Year Gas Installer Competency Assessment (DGA Reassessment) exam with instant access — no signup required.

✓ No registration✓ No credit card✓ No hidden fees✓ Start practicing immediately

112+ Questions

100% Free

Loading practice questions...

Same family resources

Explore More RGII Domestic & Non-Domestic Gas Safety

Continue into nearby exams from the same family. Each card keeps practice questions, study guides, flashcards, videos, and articles in one place.

RGII Domestic Gas Safety Assessment - Theory

Practice Questions100 questions

RGII Non-Domestic Gas Safety Assessment - Theory

Practice Questions100 questions

2026 Statistics

Key Facts: RGII 5-Year Competency Assessment Exam

100

Practice Questions

OpenExamPrep

5 years

Reassessment Cycle

RGII

6 months

Early Renewal Window

RGII

I.S. 813

Core Installation Standard

NSAI

1800 20 50 50

GNI Gas Emergency

Gas Networks Ireland

DGA Practical Competencies

CER/15/080

The RGII Domestic Gas Assessment (DGA) is the mandatory five-year competency reassessment for Registered Gas Installers (RGI) in Ireland. Open-book theory papers and practical tasks test six domains aligned with I.S. 813: combustion, pressure and flow, pipework, flues and ventilation, appliances, and electrical safety. RGIs may reassess up to six months before expiry. Our free prep includes 100 practice questions with explanations and an AI tutor.

Sample RGII 5-Year Competency Assessment Practice Questions

Try these sample questions to test your RGII 5-Year Competency Assessment exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 112+ question experience with AI tutoring.

1Under RGII rules, how often must a Registered Gas Installer (RGI) complete the Domestic Gas Assessment (DGA) competency reassessment?

A.Every 2 years

B.Every 3 years

C.Every 5 years

D.Every 10 years

Explanation: Section C 4.1.2 of the RGII Criteria Document and Section 10.2 of the Rules of Registration require every RGI to complete an accredited DGA at an approved assessment centre at least every five years. This periodic reassessment maintains registration and verifies continued domestic gas safety competence.

2Which official documents define the performance criteria for the Irish Domestic Gas Assessment (DGA)?

A.CER/15/080 (practical) and CER/15/081 (knowledge and understanding)

B.I.S. 813 Annex A and Annex B only

C.I.S. 10101:2020 and I.S. EN 1949

D.QQI 6N2053 and 6N2054 module descriptors

Explanation: RGII publishes the DGA criteria as CER/15/080 (Practical Assessment Performance Criteria) and CER/15/081 (Knowledge and Understanding Assessment Performance Criteria). Assessment centres design theory and practical tasks against these centrally approved criteria, which are based on I.S. 813 and related normative documents.

3Is formal retraining mandatory before an experienced RGI may sit the five-year DGA reassessment?

A.Yes — a minimum 16-day course is always required

B.No — training is optional, though many installers choose refresher courses before assessment

C.Yes — but only if the installer has not worked in gas for 12 months

D.No — the DGA is a self-certification form only

Explanation: The RGII Criteria Document states that RGIs are not required to undertake training prior to the DGA but may do so voluntarily. Accredited centres offer two- to three-day refresher courses, yet the legal requirement is successful completion of the open-book theory and practical assessment every five years.

4How far in advance of the DGA expiry date may an RGI complete reassessment while retaining the full five-year validity period?

A.Up to 1 month

B.Up to 3 months

C.Up to 6 months

D.Up to 12 months

Explanation: RGII guidance allows the DGA to be completed up to six months before the printed expiry date. When passed early, the new certificate still runs for the full five years from the original expiry date, giving installers flexibility to avoid last-minute suspension.

5What happens if an RGI allows their Domestic Gas Assessment (DGA) certificate to expire without renewal?

A.They receive a warning letter but may continue working for 30 days

B.Their RGII registration is suspended and they may not legally carry out designated domestic gas works

C.They may work provided a colleague cosigns Declarations of Conformance

D.They automatically transfer to provisional trainee status for one year

Explanation: A valid DGA competency certificate is a condition of RGII membership. Expiry without renewal leads to immediate suspension, which removes the legal authority to perform designated domestic gas works until reassessment is completed and the competency certificate is submitted to RGII.

6Which accreditation standard must certification bodies use when certifying DGA assessors and the competency scheme?

A.ISO 9001

B.ISO/IEC 17024

C.ISO 14001

D.ISO 45001

Explanation: DGA assessment centres must be certified by a body accredited to ISO/IEC 17024 (Conformity assessment — Requirements for bodies operating certification of persons). INAB accredits Irish certification bodies against this standard for the RGII competency scheme.

7What must a candidate present to an accredited assessment centre before commencing the DGA reassessment?

A.A letter from their employer confirming two years' experience

B.A current valid RGII identity card and registration number

C.A completed Safe Pass card only

D.A landlord gas safety certificate from the previous year

Explanation: Blueflame Certification scheme rules and RGII centre procedures require a current valid RGII identity card (or equivalent registration evidence) before DGA assessment. Reassessment candidates must also present their previous competency certificate and photographic ID.

8After successfully completing the DGA, what must the RGI submit to RGII to update their registration record?

A.A copy of the customer Declaration of Conformance Cert 1

B.The Personal Competency Certificate issued by the accredited certification body

C.A Gas Networks Ireland meter reading

D.An HSA incident report form

Explanation: RGII requires the Personal Competency Certificate from the accredited assessment centre to be sent promptly after a successful DGA. This updates the installer's registration file and confirms the next five-year reassessment date shown on the RGI identity card.

9The DGA knowledge assessment is described in RGII criteria as which type of examination format?

A.Closed-book, invigilated written exam only

B.Primarily open-book multiple-choice and written questions plus practical tasks

C.Online-only remote proctored test

D.Oral interview with CRU inspectors

Explanation: Criteria Document section C 4.4.2 defines the DGA as an open-book assessment consisting primarily of multiple-choice and written questions together with a practical assessment. Candidates may reference I.S. 813 and approved texts during the knowledge papers.

10How many practical competency areas are assessed in the Domestic Gas Safety Assessment (DGA) scheme?

A.4 competencies

B.5 competencies

C.6 competencies

D.8 competencies

Explanation: CER/13/273 and the updated DGA practical criteria assess six competencies: combustion and its control; pressure and flow; domestic pipework installations; flues and ventilation; domestic gas appliances; and electrical safety. Theory papers mirror these domains.

About the RGII 5-Year Competency Assessment Exam

The RGII 5-Year Gas Installer Competency Assessment — known as the Domestic Gas Assessment (DGA) — is the mandatory periodic reassessment every Registered Gas Installer (RGI) must pass to maintain legal registration in Ireland. Based on CER/15/080 and CER/15/081 criteria and I.S. 813, it verifies continued competence in legislation, combustion and flues, pipework testing, appliance commissioning, and electrical safety through open-book theory and practical assessment at INAB-accredited centres.

Assessment

Accredited Domestic Gas Assessment (DGA) combining open-book knowledge papers and practical tasks across six competencies: combustion, pressure/flow, pipework, flues/ventilation, appliances, and electrical safety. This practice bank is 100 selected-response items aligned to reassessment content.

Time Limit

Typically 2 assessment days at accredited centres (optional 2-3 days refresher training beforehand)

Passing Score

Competence demonstrated across theory and practical modules; safety-critical failures result in automatic fail

Exam Fee

Varies by assessment centre; typically ~€350-€500 for DGA reassessment (RGII (Register of Gas Installers of Ireland) / Commission for Regulation of Utilities (CRU))

RGII 5-Year Competency Assessment Exam Content Outline

20%

DGA Scheme & Legislation

Five-year reassessment cycle, CER/15/080 and CER/15/081 criteria, RGII registration rules, Energy Act 2006, Declarations of Conformance, and warning notices

20%

Combustion & Flues

Combustion analysis, CO/CO2 ratios, open and room-sealed flues, ventilation calculations, spillage testing, LPG properties, and I.S. EN 1949 leisure vehicle systems

20%

Pipework & Testing

Copper and steel installation, let-by and tightness testing under I.S. 813, purging, meter losses, leak detection, and emergency isolation

20%

Appliances & Controls

Boiler and cooker commissioning, gas rating, flame supervision and rectification, condensing systems, stability chains, and benchmark logs

20%

Electrical & Emergency Safety

Safe isolation and prove-dead testing per ET101, equipotential bonding, earth continuity, CO emergency actions, and gas escape protocols

How to Pass the RGII 5-Year Competency Assessment Exam

What You Need to Know

Passing score: Competence demonstrated across theory and practical modules; safety-critical failures result in automatic fail
Assessment: Accredited Domestic Gas Assessment (DGA) combining open-book knowledge papers and practical tasks across six competencies: combustion, pressure/flow, pipework, flues/ventilation, appliances, and electrical safety. This practice bank is 100 selected-response items aligned to reassessment content.
Time limit: Typically 2 assessment days at accredited centres (optional 2-3 days refresher training beforehand)
Exam fee: Varies by assessment centre; typically ~€350-€500 for DGA reassessment

Keys to Passing

Work through all 112 available questions
Review every answer and explanation
Track weak areas and revisit them
Use our AI tutor for tough concepts

RGII 5-Year Competency Assessment Study Tips from Top Performers

1Confirm your DGA expiry year on your RGI identity card and book reassessment up to six months early

2Bring your copy of I.S. 813 to the open-book theory papers and tab key sections on ventilation, testing, and flues

3Rehearse let-by (10 mbar, 1 min) and tightness test sequences before the practical assessment

4Refresh combustion analyser use: CO/CO2 ratio, O2 limits, and manufacturer benchmark values

5Practice safe isolation: lock off, prove dead with a voltage indicator and proving unit

6Work through all 100 questions here and review every explanation for gaps before assessment day

Frequently Asked Questions

How often must an RGI complete the DGA competency reassessment?

Every five years at minimum. Section C 4.1.2 of the RGII Criteria Document requires all Registered Gas Installers to complete an accredited Domestic Gas Assessment (DGA) at an approved assessment centre to maintain registration.

Can I take the DGA reassessment before my current certificate expires?

Yes. RGII allows the DGA to be completed up to six months before the expiry date. The new certificate retains the full five-year validity measured from the original expiry date.

Is training mandatory before the five-year DGA reassessment?

No. The RGII Criteria Document states training is optional before DGA. Many installers choose a two- to three-day refresher course, but the legal requirement is passing the open-book theory and practical assessment.

What happens if my DGA expires?

Your RGII registration is suspended immediately and you may not legally carry out designated domestic gas works until you pass reassessment and submit your Personal Competency Certificate to RGII.

What standards does the DGA reassessment cover?

The assessment is based on CER/15/080 and CER/15/081 performance criteria, primarily referencing I.S. 813 (Domestic Gas Installations), ET101 for electrical safety, and I.S. EN 1949 for leisure accommodation vehicle LPG systems.

Is this practice test bank free?

Yes. All 100 practice questions are free with detailed explanations and an AI tutor to help you prepare for your five-year RGII competency reassessment.