The Copper Connection Podcast – Season 2, Episode 79, Sign Your Name to It — Commissioning and Handover of Cold Water Systems | Unit 310 Phase 3.

There's a moment at the end of every job where the customer looks at you, not the boiler — because they're about to trust something you built. That's what commissioning is really about.

In this episode, host Chris Bailey covers Unit 310 of the 9289 City & Guilds Level 3 Diploma in Plumbing and Domestic Heating — Phase 3, Session 1: commissioning and handover of cold water systems, steps 2 through 5.

Chris covers:

✅ The full 11-step commissioning procedure, in order, and why the sequence matters

✅ The visual inspection checklist — open ends, connections, supports, valves, cisterns, FOVs

✅ Marking and labelling pipework — and the Category 5 water rule for rainwater harvesting and greywater reuse

✅ Filling and venting at normal operating pressure

✅ The soundness test explained in full — Water Regulations 1.5 × MOP, WRAS G12.2 and R12.2

✅ The BS EN 806 calculation cleared up: MDP = 1.5 × MOP, test pressure = 1.1 × MDP = 1.65 × MOP

✅ The full metallic pipe test procedure — 90 minutes total, zero pressure drop allowed

✅ Test A and Test B for plastic pipework — the exact figures you need

✅ Full Worksheet 1 walkthrough with the worked pressure calculation

This episode is essential listening for:

— Plumbing apprentices on the ST0303 Level 3 standard working through Phase 3

— T-Level Building Services Engineering learners

— Anyone preparing for the 9289 Phase 3 practical assessment and portfolio evidence

🔗 Handouts, worksheets and revision resources at thecopperconnectionpodcast.co.uk

Next episode: Unit 310 Phase 3 Session 2 — Flushing, disinfection, operational checks, documentation and handover.

commissioning cold water systems, BS EN 806 explained, soundness test water regulations, WRAS guidance testing, plastic pipe test A test B, unit 310 9289, plumbing apprentice phase 3, city and guilds level 3 plumbing, ST0303 apprenticeship, T-Level building services engineering, copper connection podcast, Chris Bailey plumbing podcast, rainwater harvesting category 5 water

• 9289 phase 3
• commissioning and handover
• 9289 domestic plumbing and heating
• cold water systems
• cold water systems in plumbing
• uk construction theory
• study tips for construction students
• mastering plumbing theory
• building services engineering
• educational resources for plumbing
• masterclass in plumbing
• plumbing apprentices
• plumbing revision guide
• plumbing study resources
• technical skills in construction

Hosted on Acast. See acast.com/privacy for more information.