Core Domestic Gas Safety - CCN1

Core Gas Safety comprises fifteen core competencies which are assessed by written and practical tests as indicated below.

Core Competencies	Written	Practical
Gas Safety Legislation
Gas Emergency Actions and Procedures
Characteristics of Combustion
Ventilation
Installation of Pipework and Fittings
Test for Tightness
Checking and/or Setting Meter Regulators
Identification of Unsafe Situations/Use of Emergency Notices & Warning Labels
Operation & Positioning of Emergency Isolation Controls &Valves
Checking & Setting Appliance Burner Pressures & Gas Rates
Operation & Checking of Appliance Gas Safety Devices & Controls
Flueing Standards
Flue Testing
Installation of Open, Balanced & Fan Assisted Flue Assemblies
Re-establish Existing Gas Supply & Re-light Appliances

 Written Assessments

These consist of three open and one closed book written assessments. The Open Book assessments permit the use of approved reference material such as CSkills manuals to obtain answers. The closed book contains questions on essential gas safety knowledge where reference material is not allowed. All four written assessments contain either multiple questions or true/false statements.

 Practical

Our courses cover all aspects of each assessment and are competitively priced.

The practical competencies are assessed in four sections: Domestic Installations, Ventilation, Gas Safety Controls and Flues .

Core Competencies Assessed - Practical Tasks Undertaken

Test for Tightness - with gas meter and appliances fitted- with no gas meter and no gas appliances fitted - identify, locate and repair gas escapes

Installation of pipework and fittings - identify the relevant standards in relation to pipework: passing through walls, supports and fixings, position in relation to other services, connection and disconnection, cross bonding- install copper and mild steel pipework (including longscrew) - use temporary continuity bond - purge an installation

Checking and/or setting meter regulators - check standing and working pressures at the meter, and explain the correct procedures to be taken if incorrect

Checking and setting appliance burner pressures and gas rates - check and set burner pressures and gas rates in accordance with appliance manufacturer's instructions

Re-establish existing gas supply and re-light appliances - re-establish an existing gas supply by completing visual inspection of the system, purging, re-lighting appliances and checking for spillage at any open flued appliances

Characteristics of combustion - identify visual signs of complete and incomplete combustion due to faults from the lack of primary air, the condition of the burner and its components

Identification of unsafe situations - identify and classify unsafe situations as 'At Risk' or 'Immediately Dangerous' - explain gas emergency actions and procedures

Emergency notices and warning labels - select the appropriate warning labels or notices to a selection of unsafe situations

Ventilation - calculate ventilation requirements for specified situations and select appropriate air vents/bricks- identify adequate or inadequate pre-selected air vents/bricks for specified situations

The operation and checking of appliance gas safety devices and controls - identify and explain the operation of gas taps, regulators, relay valves, cooker lid safety shut off valves, vitiation sensing devices, bi-metal strips, thermo-electric valves, liquid expansion valves, thermostats (mechanical and electrical), solenoid valves and multi-functional controls- identify any controls not operating correctly.