The Copper Connection Podcast

he Copper Connection Podcast – Season 2, Episode 78, Fill It, Test It, Flush It — Soundness Testing Central Heating Systems the Right Way | Unit 309 Phase 3Ever watched a customer's face when the pressure gauge holds steady after a two-hour soundness test? That's the moment the job goes from "nearly finished" to "properly done."In this episode, host Chris Bailey covers Unit 309 of the 9289 City & Guilds Level 3 Diploma in Plumbing and Domestic Heating Phase 3, Session 1: filling, venting, soundness testing, flushing, and chemically treating central heating systems.Chris covers:✅ The seven information sources you need before touching a system — Water Regs 1999, Building Regs Part G and L, BS EN 806, BS 8558, BS EN 12828, BS EN 14336✅ Notifying the relevant person and the pre-fill visual inspection✅ Staged filling, bleeding technique, and why overfilling triggers the pressure relief valve✅ The BS EN 14336 soundness test standard — 30% above working pressure, minimum two hours✅ The full 8-step preparation procedure and hydraulic testing method✅ Cold flush, hot flush and power flush — what each one does and when to use it✅ System additives: cleanser, descaler and inhibitor — dosing, application, and why magnetite sludge is the number one cause of premature boiler failure✅ Full Worksheet 1 answers, including the filling loop procedure and sludge impact questionThis 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 or portfolio work🔗 Handouts, worksheets and revision resources at thecopperconnectionpodcast.co.ukNext episode: Unit 310 Phase 3 — Commissioning and handover of central heating systems.soundness testing central heating, BS EN 14336, central heating inhibitor, power flush explained, cold flush hot flush, magnetite sludge boiler, unit 309 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, Fernox Sentinel inhibitor dosing

Ever watched the pressure gauge on a sealed heating system climb as the boiler fires up — and wondered why?That's not a fault. That's science. And once you understand it, you stop guessing and start knowing.In this episode, host Chris Bailey takes you through the complete properties of gases content for Unit 303 of the 9289 City & Guilds Level 3 Diploma in Plumbing and Domestic Heating — AC2.7 and the gas laws — in plain English, with real trade context throughout.This is Session 1 of the Phase 2 Unit 303 Scientific Principles series, and it covers the six principal gases you'll work with in building services — plus the two gas laws every plumbing and heating engineer needs to understand.Chris covers:✅ Air — composition (78% nitrogen, 20.9% oxygen), uses in building services including combustion, pressure testing, and expansion vessels✅ Steam — the pressure/boiling point relationship, why water flashes to steam at 1,600x its volume, and the safety implications for unvented systems✅ Natural gas — constituents, methane CH4 at 90%, calorific value, relative density 0.58 (lighter than air — rises), flammable limits 5–15%, LEL and HEL✅ LPG — butane vs propane, calorific values, relative density 1.5 (heavier than air — SINKS), flammable limits, why LPG installation differs from natural gas✅ Carbon dioxide — pipe freezing kits, fire extinguishers, CO vs CO2 combustion✅ Refrigerant gases — the vapour compression refrigeration cycle and how heat pumps work✅ Charles's Law — volume and temperature at constant pressure, Kelvin scale, gas tightness testing temperature stabilisation✅ Boyle's Law — inverse pressure-volume relationship, expansion vessel calculations✅ Pressure units — Pa, bar, mbar, kPa, and when you use each one on siteThis episode is essential listening for:— Plumbing apprentices on the ST0303 Level 3 standard working through Phase 2— T-Level Building Services Engineering learners (Year 1 and Year 2)— Anyone sitting the 9289 Phase 2 exam who finds the science sessions challenging— Learners working through Unit 303 AC2.7 and AC4 contentThe science explains the trade. This episode makes it click.🔗 Handouts, worksheets, and revision resources at thecopperconnectionpodcast.co.ukNext episode: Unit 303 Phase 2 Session 2 — Energy, heat and power. Latent heat, sensible heat, change of state, and why condensing boilers are more efficient than conventional ones.properties of gases plumbing, Boyle's Law plumbing, Charles's Law explained, natural gas properties, LPG vs natural gas, relative density gas, calorific value natural gas, unit 303 scientific principles, 9289 phase 2 science, plumbing apprentice science revision, refrigerant gases heat pump, vapour compression cycle, steam properties plumbing, gas tightness testing temperature, pressure units bar pascal, city and guilds level 3 plumbing, ST0303 apprenticeship science, T-Level building services engineering, copper connection podcast, Chris Bailey plumbing podcast

The Copper Connection Podcast – Season 2, Episode 76, Water In, Waste Out — Cold Water Systems & Sanitary Appliances for Plumbing Apprentices | Unit 307 Phase 2Phase 2 of your plumbing apprenticeship is where theory meets real installations. And cold water systems are where a lot of learners either click — or come unstuck.In this episode, host Chris Bailey takes you through the complete cold water systems and sanitary appliances content for Unit 307 of the 9289 City & Guilds Level 3 Diploma in Plumbing and Domestic Heating.This is Session 1 of the Phase 2 Unit 307 deep-dive — and it starts with a question every apprentice should be able to answer: what's the actual difference between a direct and indirect cold water system, and why does it change every installation decision you make?Chris covers:✅ Direct cold water systems — how they work, pressure, pipe sizes, advantages and disadvantages✅ Indirect cold water systems — CWSC capacity, pipe sizes (including the 22mm bath feed rule), pros and cons✅ Hard water and water treatment — magnetic conditioners, water softeners, drinking water filters✅ Sanitary appliance materials — vitreous china, acrylic, stainless steel, fireclay, cast iron, pressed steel✅ Baths — all six types, BS 4304, AUK2 air gap, 22mm feeds, 40mm waste, combination waste fittings✅ Shower trays and cubicles — wet rooms, unslotted waste, feed pipe sizing✅ WCs — washdown, siphonic, close-coupled to wall-hung, flush volumes from 9L to today's 4/6L dual flush✅ Urinals — bowl, trough, slab, sparge pipe, automatic flushing cisterns, waterless urinals, Water Regs volumes✅ Bidets — over-rim vs ascending spray, the AUK2 air gap rule, why ascending spray MUST be cistern-fed✅ Valves — stop valves, gate valves, FOVs (BS 1212 Parts 1–4), drain-off valves, spherical plug valves✅ Building Regulations Part G — 125 litres per person per day, water efficiency calculationsThis episode is essential listening for:— Plumbing apprentices on the ST0303 Level 3 standard working through Phase 2— Level 2 Plumbing students progressing to Level 3— T-Level Building Services Engineering learners (Year 1 and Year 2)— Anyone revising for the 9289-021 Phase 2 multiple choice examPlain English. Real trade context. No fluff.🔗 Handouts, worksheets, and revision resources at thecopperconnectionpodcast.co.ukNext episode: Unit 307 Phase 2 Session 2 — Hot water systems, central heating, open-vented vs sealed pressurised systems.cold water systems plumbing, direct indirect cold water system, unit 307 9289, phase 2 plumbing apprentice, sanitary appliances plumbing, AUK2 air gap, bidet water regulations, WC flush volumes, urinal water regulations, bath installation plumbing, float operated valve BS 1212, water supply water fittings regulations, building regulations part G, city and guilds level 3 plumbing, 9289-021 exam revision, ST0303 apprenticeship, T-Level building services engineering, copper connection podcast, Chris Bailey plumbing podcast, plumbing revision UK

The Copper Connection Podcast – Season 2, Episode 75, The Law That Keeps You Alive — Health and Safety Legislation for Plumbing Apprentices | Unit 301 Session 1Starting your plumbing apprenticeship? This is the episode you listen to first.Before you touch a tool, before you connect a fitting, before you walk onto any site, there is a legal framework that exists specifically to make sure you go home safe at the end of every working day. And if you don't understand it, you're not just putting yourself at risk. You're putting your colleagues, your customers, and the public at risk too.In this episode, host Chris Bailey takes you through the complete health and safety legislation content for Unit 301 of the 9289 City & Guilds Level 3 Diploma in Plumbing and Domestic Heating, in plain English, with real trade context.Chris covers: Health and Safety Legislation for Plumbing Apprentices✅ Why health and safety law exists — and why it's not just paperwork✅ The Health and Safety at Work etc. Act 1974 (HASAWA) — the principal piece of UK workplace legislation, what it covers, and who it applies to✅ Your legal duties as an employee under Section 7 of the HASAWA✅ Your employer's duties under Section 2 — including the five-employee written policy rule✅ COSHH — Control of Substances Hazardous to Health — and what those warning symbols on bottles actually mean✅ CDM 2015 — Construction Design and Management Regulations — and the red, amber, green framework✅ PPE Regulations, PUWER, Work at Height Regulations, Manual Handling Regulations✅ The Control of Asbestos Regulations — and the one rule you must never break on site✅ RIDDOR — what you must report, when, and to whom✅ The difference between mandatory and advisory publications — Acts and Regulations vs ACOPs and HSE Guidance✅ The role of the HSE — and what their inspectors can actually do to you and your employer✅ Building services-specific legislation — Water Fittings Regulations, Gas Safety Regulations, BS 7671, CSCS cards, and competent personsThis episode is essential listening for:— New plumbing apprentices on the ST0303 Level 3 standard— Level 2 Plumbing students progressing to Level 3— T-Level Building Services Engineering learners (Year 1 Core)— Anyone sitting the 9289-001 standalone Health and Safety examThe Copper Connection is the UK podcast built for plumbing and building services learners — honest, practical, and always trade-focused.🔗 Handouts, worksheets, and revision resources at thecopperconnectionpodcast.co.ukNext episode: Unit 301 Session 2 — Hazardous Situations, COSHH in Practice, and Asbestos on Site.health and safety legislation for plumbing apprenticestechnical qualifications in constructionuk construction theoryplumbing apprentices9289 domestic plumbing and heatinghealth and safety in plumbinghealth and safety exam tipshealth and safety exam preparationthe copper connection podcastbuilding services engineeringplumbing

The Copper Connection Podcast – Season 2, Episode 74, Phase 3 Explore commissioning, handover and completion in building services engineering with practical insights and revision support.Phase 3 is the final core phase of the 9289 — and it's where the qualification asks the most of you. Not just in terms of content, but in terms of professional thinking. This is the phase that separates building services engineering fitters from technicians.In Episode 4 of The Copper Connection Podcast, host Chris Bailey walks through every unit assessed in Phase 3 of the 9289 — including the shorter but entirely new exam, the substantial 15-hour practical assignment, and the all-important Phases 1–3 Work Log submission that many learners underestimate until it's almost too late.Chris covers:✅ The Phase 3 assessments — 9289-031 MCQ (30 minutes, 20 questions) and 9289-032 practical (15 hours), plus the 9289-002 Work Log submission✅ Unit 314 Environmental Technology Systems — the unit that accounts for 40% of the Phase 3 exam, covering renewable and non-renewable energy sources, heat pump principles, micro-CHP, permitted development, and Building Regulations Part L✅ Unit 315 Domestic Fuel Systems — combustion processes, complete vs incomplete combustion, CO poisoning and CO detectors, ventilation requirements, and chimney and flue system principles✅ Unit 316 Electrical Work and Control Systems — your responsibilities and limitations as a plumber, BS 7671, Building Regulations Part P, and control system components✅ The Phase 3 practical in full — commissioning and handover (Unit 310), fault diagnosis (Unit 311), service and maintenance (Unit 312), sizing and selection (Unit 313), and the electrical practical from Unit 316✅ How to approach sizing — from cold water pipe sizing to central heating heat loss calculations✅ The Unit 317 Work Log — what your five areas of evidence need to include, and why you can't afford to leave it incomplete✅ An honest word about what it takes to get to Phase 3 — and why it mattersThis is essential listening for anyone approaching their final core phase assessments.🔗 Show notes, portfolio tips, and revision resources at thecopperconnectionpodcast.co.ukComing next on The Copper Connection — Phase 4 specialist pathways, EPA preparation, and life after qualification.building services engineeringplumbing apprentices9289 domestic plumbing and heating9289 phase 3electrical principles for plumbingelectricalelectrical principles exam prepbse systemsbuilding regulations explaineduk construction regulationsconstruction regulationsuk construction theorytechnical qualifications in constructionplumbing revision podcastmasterclass in construction theory

The Copper Connection Podcast – Season 2, Episode 73, Phase 2 Master systems, science and installation best practice with building services engineering revision for construction studentsPhase 2 is where the 9289 gets serious. This is the phase where you stop learning about systems and start actually installing them and the assessments reflect that. With 50 exam questions, a practical assignment of up to 19 hours, and an ongoing work log to maintain, Phase 2 is the most demanding phase of the core qualification around building services engineering.But it's also where things start to click.In Episode 3 of The Copper Connection Podcast, host Chris Bailey walks you through every unit assessed in Phase 2 — breaking down the content, the exam weighting, and the key points you absolutely need to know going in.Chris covers:✅ The Phase 2 assessments — 9289-021 MCQ (75 minutes, 50 questions) and 9289-022 practical (14–19 hours)✅ Unit 303 Scientific Principles Phase 2 — Boyle's Law, Charles' Law, latent and sensible heat, heat transfer, force and pressure, and the basics of electricity✅ Unit 307 in full — the unit that accounts for 86% of the Phase 2 exam:→ Cold water installation: fluid categories, backflow prevention, storage cisterns, Legionella→ Hot water installation: vented and unvented systems, the four safety devices you must know→ Central heating installation: open-vented vs sealed, pump positioning, zoning, controls, and Building Regs Part L→ Sanitary appliances and pipework: trap seal loss, above-ground drainage, accessible design→ Rainwater systems: gutters, downpipes, expansion, and sizing✅ Unit 308 — decommissioning cold water, hot water, and sanitary systems✅ Unit 309 — soundness testing for Phase 2 systems✅ What the Phase 2 practical assignment actually tests — and how to prepare✅ How to build meaningful portfolio evidence for Unit 317 while on siteWhether you're about to sit your Phase 2 assessments or you're working through the content now, this episode gives you the roadmap.🔗 Show notes, revision resources, and study materials at thecopperconnectionpodcast.co.ukbuilding services engineering9289 phase 2plumbing apprentices9289 domestic plumbing and heatingcold water systems in plumbingcold water systemsplumbing revision podcastuk construction theorysanitation and drainage exam prepplumbing study resourceslevel 2 construction qualificationsmasterclass in construction theorybse systemscold water systems trainingpodcast for construction students