EUSDSG3.5 Install and remove gas pipework in domestic settings
Overview
This standard is about installing and removing gas pipework in domestic settings. This could be for new installations, exchanging or replacing existing pipework or for removing obsolete pipework. Pipework will be up-to 35mm.
This standard covers the work activities of fabricating, installing and removing gas pipework including the disconnection, de-commissioning and commissioning that is involved. It can apply to any type of fuel gas or combinations of fuel gas.
This standard should be used in conjunction with:
EUSDSG3a Prepare to work on gas systems or appliances in domestic settings; and
6 Carry out gas tightness testing and direct purging in small settings
This standard is for gas engineers who work in domestic settings and for emergency first responders.
Performance criteria
You must be able to:
Check that conditions within gas and earthing systems will permit safe de-commissioning and re-commissioning
Select and use the correct tools and equipment for all aspects of the work
Use designated safe isolation methods, tests, and procedures to de- commission gas and earthing systems and components
Take precautionary actions to ensure that temporarily de- commissioned appliances, systems, or components do not present a safety hazard
Minimise damage to customer property and building features throughout all stages of work
Disconnect and remove appliances, gas system components and earthing system components in line with installation plans
Assemble and install the correct sizing of gas system pipework, fittings and components as required by installation plans
Position pipework and confirm it meets location, siting and clearances required by appliance manufacturers’ and industry standards’ specification
Provide adequate ventilation for new or replacement pipework installations and systems in line with industry standard practice
Provide adequate support(s) for pipework installation to conform with industry standards’ specification
Position and protect pipework installation in and through walls and in multi-occcupancy dwellings to meet industry standards for sleeving and purpose designed channels and shafts
Position and protect external and below ground level installations against damage to meet industry standards and requirements
Ensure existing gas systems are clean and free of debris
Fix and connect gas pipework, valves, fittings and components to supply in line with installation requirements
Mark any live gas pipes with a notice to indicate the pipe contains gas
Install additional emergency control valve (AECV) to supply when required for remote meter installations
Connect earthing system components to the supply in line with industry standard practice
Confirm the complete pipework installation complies with the manufacturers’ specification, industry standards, safety schemes and regulations
Use designated safe isolation procedures and warning notices to prevent the unauthorised use of un-commissioned or de-commissioned gas appliances, gas systems, electrical systems and components
Use tightness testing and purging procedures to confirm the integrity of, and safe supply of gas to, the installed gas system
Use electrical testing procedures to confirm the integrity of installed earthing systems
Apply protective coating to pipework and joints after gas tightness testing has been completed.
Check and confirm the operation of installed gas valves and components to ensure they function safely and operate in accordance with manufacturers’ instructions
Complete all relevant documentation and paperwork in line with industry standards
Instruct property occupiers on the correct operation of user controls and isolation valves and provide them with their copy of any literature
Resolve problems within own area of responsibility and competence in accordance with approved procedures
Advise of any delays to the work, unresolved problems, unsafe situations and required remedial actions to those who require the information
Knowledge and understanding
You need to know and understand:
Regulations and guidance governing health and safety in the workplace, environmental protection and the use of risk assessments including safe access and working at heights
Legislation covering your general responsibilities for your own safety and that of others
The limits of your own autonomy and responsibility
Gas industry unsafe situations procedures and how to isolate unsafe gas appliances, gas systems and components
Potential hazards that could arise from all de-commissioning, installation and commissioning activities and checks to be carried out before work takes place including earthing systems and whether pipework is safe to touch
How to access and interpret normative documents, guidance documents, manufacturers’ instructions, industry standards, safety schemes and regulations
Industry standard practices for new installations, exchanging or replacing existing pipework or for removing obsolete pipework
Industry practices, work standards, safety precautions and hazardous substance regulations for types of pipe, jointing materials and fittings suitable for carrying gas including connecting to lead composition pipes
Industry standards’ requirements for location, siting, clearance, support, positioning and fixing methods for gas pipework, valves, systems and components including floors, ducts, through walls, buried in walls, in concrete floors, multi-occupancy buildings and protected shafts containing stairs, lifts or other protected fire escape routes
Industry standard practices and work standards for pipe installation within suspended & joisted floors including methods of lifting and replacing chipboard flooring and floorboards
The installation and protection of installations to meet industry standards requirements including firestopping and, for external installations, protection against mechanical damage and minimum depth below ground level
The industry practices and methods of bending pipe materials suitable for carrying gas and copper pipework to set measured distances including double sets/offset bends, 90-degree bends and crank sets/passover bends
Procedures and work methods for connecting pipework, valves and components to both new and existing gas systems and appliances and to input services including; gas, earthing systems, ventilation and cross bonding
The procedures and work methods to ensure correct gas pipe identification
How to measure and record installation and site details for prefabrication and the benefits of making up pipework away from areas that could cause flash back or damage.
How to confirm that services and system requirements are adequate for gas system and components
Safe isolation methods, tests, and procedures for temporary and permanent de-commissioning of gas and electricity systems, components and appliances including use of temporary continuity bonds, voltage sticks, voltage indicators, proving units, multimeters
Measures to prevent un-commissioned and de-commissioned appliances or systems being brought into operation
How to confirm that the provision of ventilation meets the industry standards’ requirements for the installation including in voids, shafts and ducts,
How to calculate correct sizing of pipework to ensure minimum pressure loss across installation
Checks and tests to confirm suitability of gas supply and earthing system, including the installation and positioning of the main equipotential bonding
Methods of working which protect building décor, customer property and existing systems and components
Safe processes and procedures for applying tightness testing and purging and electrical testing to appliances, gas systems and components to ensure safe functioning
The steps to take when problems arise with work activities
Job management structures and methods of reporting and recording job progress or problems delaying progress
How to complete all installation and commissioning documentation and records to be left with the property
System handover procedures and how to demonstrate the operation of gas systems, valves and components to end users
EUSDSG3.5 Install and remove gas pipework in domestic settings
Overview
This standard is about installing and removing gas pipework in domestic settings. This could be for new installations, exchanging or replacing existing pipework or for removing obsolete pipework. Pipework will be up-to 35mm.
This standard covers the work activities of fabricating, installing and removing gas pipework including the disconnection, de-commissioning and commissioning that is involved. It can apply to any type of fuel gas or combinations of fuel gas.
This standard should be used in conjunction with:
This standard is for gas engineers who work in domestic settings and for emergency first responders.
Performance criteria
You must be able to:
Knowledge and understanding
You need to know and understand: