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  • ACS - CMDDA1 Carbon Monoxide/ Dioxide Atmosphere and Appliance Testing
Qualification Details

ACS - CMDDA1 Carbon Monoxide/ Dioxide Atmosphere and Appliance Testing

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General Information

ACS - CMDDA1 Carbon Monoxide/ Dioxide Atmosphere and Appliance Testing
Gas Qualifications
CMDDA1
5 years

Background and Prerequisites

This gas safety assessment is designed to test the competence of an operative in determining ambient levels of CO and presence of CO2 in dwellings and identifying the cause of fumes using a portable electronic combustion analyser. This will typically be any engineer who responds to the genuine report of a CO alarm being activated or a report of fumes.

The scope of the assessment covers Type A, B & C domestic gas appliances fitted in dwellings and follows the guidance and procedures outlined in BS 7967. Related information has also been issued by HSE in the form of HSE Guidance Notes HSE(EH)40 and HSE(L)56, Gas Safety (Installation & Use) Regulations. 

It does not cover commercial premises and appliances or the procedures to adopt following an incident reportable under RIDDOR. Where an engineer is required to carry out a formal CO incident investigation on behalf of a gas supplier as part of their obligation under gas safety legislation, the engineer would need to have successfully achieved a relevant qualification in the investigation of CO poisoning and carry out the investigation in accordance with the Institution of Gas Engineers and Managers (IGEM) Industry Standard (IGEM/GL/8)

CCN1/CCLP1 + CPA1) or CCN1/CCLP1 as from 1st April 2012 or valid equivalent NVQ or QCF/RQF qualification + appropriate domestic appliance(s)

This is regarded as having an equivalence to a Level 3 qualification.

Assessment

Assessment is carried out using a variety of assessment methods including multiple choice, short written response and scenario questions and observed practical assessment

Related Qualifications and Resources

ACS - Core Domestic Natural Gas Safety and Appliances (CCN1) ACS - Core LPG Safety and Appliances
HSE GAS INFORMATION WEBSITE HSE(EH)40 HSE(L)56 - GSIUR

Additional Learner and Centre Information

What careers can this accredited certification lead to?

This certification enables you to register with Gas Safe Register as an engineer who has demonstrated gas safety competence in atmosphere and appliance testing and analysis of the presence of CO/CO2.

What progression opportunities are available when I achieve this accredited certification?

These certificates are a valuable asset in the career progression of engineers who carry out atmosphere and appliance sampling and analysis for the presence or absence of CCO/CO2.

Achievement of this certificate forms part of a broader development path for those aiming to become multi-skilled engineers in domestic or commercial appliance and heating services.

This certificate is particularly valuable for those looking to secure ongoing work through company employment or as a sole trader.

Holders of this certificate could extend their range of certification and gas work to include:

Domestic NG and LPG appliances in permanent dwellings, Residential Park Homes, Leisure Accommodation Vehicles, Boats, Yachts and other Vessels.
Gas Safety Inspection (Landlord Gas Certification).
NG Strength/Tightness Testing and Purging up to 40mbar & 1m³ volume TPCP 1A.
Domestic Medium Pressure Meter Regulators and Controls.
Smart gas and power meters.
Domestic and commercial NG gas appliances.

Further career advancement into supervisory and management jobs may be achieved by acquiring the following qualifications awarded by LCL Awards:

Level 3 Award in Auditing of a Gas Business Work Management Procedures.

Level 3 Award in Auditing of Gas Work.

What is involved in delivering this accredited certification’s assessments?

Centres delivering the ACS gas safety Atmosphere & Appliance Testing assessments must be approved by LCL Awards and have assessors with relevant industry experience and appropriate assessing experience and or qualifications.

Assessment involves a combination of multiple-choice questions, short written responses, scenario-based exercises, and observed practical tasks.

Centres must adhere to the requirements of the LCL Awards' Approved Centre Quality Management System and the Centre Agreement in delivering the certification’s examinations and assessments.

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