The Copper Connection Podcast

An unvented cylinder can be fitted perfectly, look fine, and still fail three weeks later if it was never actually pressure tested. In this episode of The Copper Connection Podcast, Chris Bailey opens Unit 310 of the 9289 apprenticeship (ST0303), Phase 3, Learning Outcome 2, moving commissioning and handover thinking from cold water systems across to hot water systems.This is Part 1 of a two-part hot water systems masterclass, covering the difference between open-vented and unvented systems, the full nine-step commissioning procedure, and steps two to four in detail: the visual inspection, filling and venting, and the soundness test. Chris breaks down where the 1.5-times test pressure figure in the Water Supply (Water Fittings) Regulations 1999 comes from, and how BS EN 806 can push that figure even higher — working through the bar-pressure calculations examiners expect for hot water safety and plumbing exam preparation.You will learn to:Understand the difference between open-vented and unvented hot water systemsExplain the full nine-step commissioning procedure for hot water systems and componentsIdentify the ten checks carried out during the visual inspection stageApply the correct filling and venting sequence for open-vented and unvented systemsCalculate the statutory soundness test pressure under the Water Fittings RegulationsCompare that figure with the BS EN 806 commissioning test pressure calculationExplain the WRAS G12.2 and R12.2 requirements for testing rigid pipeworkIdentify the Test A and Test B procedures for plastic pipework under BS EN 806 Part 2Grab your Unit 310 notes and work the bar-pressure calculation yourself before Part 2 lands with steps five through nine.soundness testing, hot water systems, unit 310 phase 3, 9289 apprenticeship, ST0303

Why can a pressurised hot-water system become so dangerous when pressure is suddenly released? In this episode of The Copper Connection Podcast, Chris Bailey explains the scientific principles behind temperature, heat and change of state for plumbing and heating apprentices.Covering Unit 303, Phase 2, Session 2, this episode supports the 9289 Plumbing and Domestic Heating Technician apprenticeship and helps learners prepare for the Scientific Principles assessment criteria:• AC 3.1: The relationship between Celsius and Kelvin temperature scales• AC 3.2: The principles associated with changes of state• AC 3.3: Sensible heat and latent heat in liquids and gasesYou will learn:• How to convert between Celsius and Kelvin• What ΔT means in heating and heat-loss calculations• How solids, liquids and gases change state through melting, evaporation, condensation and freezing• Why water expands when heated, freezes, and turns to steam• Why frozen water can split pipework• How pressure changes the boiling point of water• Why unvented cylinders, sealed systems, pressure-relief valves and safety cut-outs must be treated with respect• The crucial difference between sensible heat and latent heat• Why superheated water can flash rapidly into steam when pressure is releasedThis is not abstract science for the sake of an exam. It is the knowledge behind the safety procedures, system design and commissioning decisions you will encounter throughout your plumbing and heating career.Follow The Copper Connection Podcast for practical, exam-focused support for plumbing, heating and building-services learners.

EPA reforms are generating plenty of confusion across plumbing and building services education, but what has actually changed for current learners?In this episode, Chris Bailey breaks down the move from End-Point Assessment (EPA) to Apprenticeship Assessment and explains what it means in practice for:City & Guilds 9289 Level 3 Plumbing and Domestic Heating Technician apprenticesCity & Guilds Level 2 Plumbing learnersT-Level Building Services Engineering studentsTutors, assessors and employers supporting apprenticesYou will learn why the current ST0303 assessment model remains unchanged for existing plumbing apprentices, what the January 2026 9289 v1.2 update really means, and why T-Level BSE assessments are not affected by apprenticeship EPA reforms.Chris also tackles five common misconceptions, including whether assessments are moving earlier, whether colleges will now mark EPA work, and whether learners need to revise different content.For the free tutor resource pack and the EPA Change Navigator chatbot, visit:https://thecopperconnectionpodcast.co.uk/epa-changes

Struggling to connect Unit 303 "Electrical and Scientific Principles – Units of Measurement" with what you actually do on site? In this Phase 1 Unit 303 episode of The Copper Connection Podcast, Chris Bailey turns SI units and derived units into practical tools for UK plumbing and building services students.You'll start with the seven base SI units – metre, kilogram, second, ampere, kelvin, candela and mole – and see which ones matter most in everyday plumbing tasks. Then we dive into temperature (Celsius vs Kelvin), pressure and head (pascal, kilopascals, bar and static head), and capacity in litres and cubic metres. From there, we break down key derived units: area in m², volume in m³, velocity in m/s, and density in kg/m³, including water's expansion and why pipes can burst when it freezes.We'll also tackle the non-SI units you still meet on UK sites: imperial length and weight, old gas meters in cubic feet per hour, and BSP pipe thread sizes that mix inches with metric diameters.Ideal for T-Level BSE, Level 2 and Level 3 plumbing learners and apprentices revising Unit 303, this episode helps you use units confidently in drawings, calculations and commissioning – and turns "science" into something that feels site-ready.🔗 Handouts, worksheets and revision resources at thecopperconnectionpodcast.co.ukFollow The Copper Connection on Acast, Spotify, Apple Podcasts and YouTube, and share this episode with a mate who hates science but loves tools.electrical and scientific principles, unit 303 9289, 9289 phase 1 science, SI units plumbing, plumbing apprentice science revision, t level bse revision, city and guilds level 3 plumbing, ST0303 apprenticeship, T-Level building services engineering, copper connection podcast, Chris Bailey plumbing podcast

Revising Unit 304 “Planning and Supervision” and still not sure who actually runs a job, who signs work off, or who can shut it down when it’s unsafe? In this Phase 1 episode of The Copper Connection Podcast, host Chris Bailey maps out the full construction team and key site visitors so T‑Level BSE and plumbing learners can finally see the bigger picture.You’ll walk through a realistic UK building project step‑by‑step – from the client and architect, through the project manager, clerk of works and quantity surveyor, down to the main contractor, site management team, trade supervisors and craft operatives. Then we introduce the inspectors and visitors who focus on safety and compliance: building control, water inspectors, health and safety inspectors and electrical services inspectors, plus delivery drivers and members of the public on or near site.Perfect for T‑Level Building Services Engineering, Level 2 and Level 3 plumbing students, and UK apprentices revising construction team roles and responsibilities for Unit 304, this episode turns your handouts into a story you can remember and use in exam answers and on site.Follow The Copper Connection on Acast, Spotify, Apple Podcasts and YouTube, and share this episode with a course‑mate or fellow apprentice who needs to tighten up their planning and supervision knowledge before assessment.

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 calculationThis 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.ukNext 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 water9289 phase 3commissioning and handover9289 domestic plumbing and heatingcold water systemscold water systems in plumbinguk construction theorystudy tips for construction studentsmastering plumbing theorybuilding services engineeringeducational resources for plumbingmasterclass in plumbingplumbing apprenticesplumbing revision guideplumbing study resourcestechnical skills in construction