PP 12 Central Heating Decommissioning Quiz

What are the two types of decommissioning to consider for plumbing systems?

• Enduring and Brief

• Complete and Partial

• Long-term and Short-term

• Permanent and Temporary

What should be considered before decommissioning a gas-fired central heating system for a boiler replacement?

• Isolation of services, gas safety, cold feed isolation, electrical standards

• Effect on other systems, need for temporary heating, impact on DHW services, customer awareness

• Gas isolation, water draining, electrical supplies, inhibitor disposal

• Venting air, replacing radiator valve heads, using continuity bonds, gas tight disconnection

What should be considered when decommissioning the system to enable draining?

• Gas isolation, temporary heating, effect on DHW services, accessible isolation

• Disconnecting mains cold water, using integral filling loops, following Safe Isolation procedure, disposal of chemicals

• Isolation of cold feed, venting air, disposal of inhibitors, replacing radiator valve heads

• Isolation of electrical supplies, venting air, removing water, using continuity bonds

What is important to remember when removing water from a sealed system?

• Opening a vent on a radiator at high level, disposing of inhibitors, replacing radiator valve heads, using continuity bonds

• Isolating cold feed, disconnecting mains water, following Safe Isolation procedure, venting air

• Using temporary continuity bonds, replacing radiator valve heads, following gas safety standards, venting air

• Using integral filling loops, following Safe Isolation procedure, disposing of chemicals, isolating electrical supplies

What should be done with thermostatic radiator valve heads when the radiators are removed?

• Replace with manual caps

• Dispose of them

• Keep them for future use

• Leave them as is

What is important to consider when removing any metallic pipework for alteration or repair?

• Using temporary continuity bonds to maintain earth continuity

• Disconnecting electrical supplies

• Isolating gas and water

• Following Safe Isolation procedure