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87. The Two Minutes That Matter Most — Responding to Accidents on Site | Unit 301 Session 5
24:27||Season 2, Ep. 87You shout through to your mate under the sink and get nothing back. Solvent cement tin still open beside him. Head down. Not moving. What you do in the next sixty seconds actually matters.In this episode of The Copper Connection Podcast, Chris Bailey covers Session 5 of the Unit 301 deep-dive — Health and Safety Systems — working through LO4: know and understand how to respond to accidents. This supports the City & Guilds Level 3 Diploma in Plumbing and Domestic Heating and Phase 1 of the 9289 apprenticeship (ST0303), so it applies whichever route brought you here.Chris covers:• What an accident actually is — unforeseen, unplanned, uncontrolled — and the wider emergencies you need to recognise, from fire and collapse to gas leaks, chemical spillage and electrocution• The moment of discovery: raising the alarm, dialling 999, and giving the operator the nature of the incident, the location and the site entry points• Why you send a colleague to the site entrance — and why three lost minutes can change an outcome• Staying with the casualty, getting a first aider to attend, and informing next of kin• The fire drill: sound the alarm, call 999, evacuate, assemble• First-aid provision — why there are no medicines in a first-aid box, what makes a first aider a competent person, the appointed person, and the first aider's three core duties• The calm six-step sequence when you find someone injured: make yourself safe, make the area safe, administer first aid, contact emergency services, contact the first aider, contact the supervisor• Minor injuries — burrs on copper tube, solder burns, dust and fume irritants — including the ten minutes of cold running water that most people rush• Fumes from solvent welding: remove, ventilate, recovery position, CPR• Major injuries — simple and compound fractures, unconsciousness, electric shock, toxic poisoning, asphyxiation and concussion, including the twenty-four hour watch• The paperwork that protects you — the accident book, exactly what goes in it, witness statements, and RIDDOR• Who investigates an accident and what each role on site actually doesFor your exam you need to state the requirements for first-aid provision, describe the actions to take on discovering an accident or emergency, identify the procedures for minor and major injuries, and state the recording procedures for accidents and near misses. Work through Worksheet 6 alongside the HSE's first-aid-at-work leaflet, and watch the recovery position and CPR clips more than once.Handouts, worksheets and revision resources at thecopperconnectionpodcast.co.uk
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86. Why Copper Wins Every Race, Heat Transfer, Energy and Expansion, 9289 Phase 2 Unit 303
26:32||Season 2, Ep. 86Three pipes in a vice, copper, low-carbon steel, stainless, one blowlamp, one flame. Copper doesn't just win, it isn't even the same event. This episode explains exactly why.In this episode of The Copper Connection Podcast, Chris Bailey continues Unit 303 of the 9289 apprenticeship (ST0303), Phase 2, covering AC3.4 and AC3.5 — the three methods of heat transfer, and how the units of energy, heat and power actually relate to each other.Chris works through conduction and the coefficient of thermal conductivity (copper at 385 W/mK against expanded polystyrene at 0.03), U values and the area × U value × temperature difference heat loss formula with a full worked cavity wall example, convection and why a hot water cylinder circulates without a pump, radiation and why a patio heater warms you but not the air, where the Joule and the watt come from, specific heat capacity and why water was chosen as the heat transfer medium, and linear expansion including why a 25 metre steel steam pipe moves over 31 millimetres once steam is flowing.You will learn to:Explain conduction, convection and radiation, and the hot-goes-to-cold rule underneath all threeRank common materials by coefficient of thermal conductivity in W/mKCalculate heat loss through a structure using area, U value and temperature differenceExplain how a hot water cylinder heats by convection, and why density drives itExplain why radiation heats objects but not the air it travels throughDerive the Joule from force and distance, and the watt as Joules per secondConvert between watts and BTU per hour on older equipment specificationsApply specific heat capacity values for water, ice, kerosene and propylene glycolCalculate linear expansion for copper, steel and PVC pipework using the coefficient formulaWork through Worksheet 4 on U values and the expansion calculations before the next Unit 303 session.heat transfer, specific heat capacity, linear expansion, unit 303 phase 2, 9289 apprenticeship, ST0303www.thecopperconnectionpodcast.co.uk
85. The Cistern in the Loft — Fault Diagnosis on Cold Water Systems, 9289 Phase 3 Unit 311
20:04||Season 2, Ep. 85A split cold water cistern in a loft can pour through a kitchen ceiling for hours before anyone notices and the fix depends entirely on getting the isolation sequence right first.In this episode of The Copper Connection Podcast, Chris Bailey opens Unit 311 of the 9289 apprenticeship (ST0303), Phase 3, Learning Outcome 1, moving from commissioning into fault diagnosis and rectification on cold water systems and components.Chris covers why cold water systems need ongoing maintenance, the three-step diagnostic habit, listening to the customer, using manufacturer fault charts, checking service history the six bye-law 30 kit components every loft cistern should have, and the seven-step process diagnose, notify, isolate, decommission, rectify, re-commission, handover that every repair follows. The episode closes with a symptom-cause-action run through of a dozen real cold water faults, from pressure and flow problems to cistern failure, underground main leaks, and worn tap washers.You will learn to:Explain why routine maintenance matters for cold water systemsApply the three-step diagnostic approach for any cold water faultIdentify the six bye-law 30 kit components required in a loft cisternApply the seven-step fault rectification sequence to any repairDiagnose common cold water faults by symptom, cause and actionGrab your Worksheet 1 on fault-finding before the next session moves on to hot water fault diagnosis.cold water fault diagnosis, bye-law 30 kit, unit 311 phase 3, 9289 apprenticeship, ST0303
84. The Pressure Test That Never Lies — Commissioning Hot Water Systems, 9289 Phase 3 Unit 310 (Part 1)
22:27||Season 2, Ep. 84An 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
83. Temperature, Heat & Change of State | Unit 303 Phase 2
22:30||Season 2, Ep. 83Why 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.
82. The EPA Is Changing: What Plumbing Apprentices Need to Know
12:10||Season 2, Ep. 82EPA 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
81. Units That Actually Matter On Site – Unit 303 Electrical & Scientific Principles for Plumbing & BSE
14:40||Season 2, Ep. 81Struggling 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