UK Exam Prep

UK Exam Prep

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UK Exam Prep episodes

  • [ACS CCN1] 23, Low-Pressure Tightness Testing Step by Step
    This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams.
    In this episode you will learn:
    - How to perform the ECV let-by test at 7 to 10 mbar for 1 minute and identify action required for let-by failures.
    - Standard test pressures for natural gas, including the 20 to 21 mbar test range, 18 mbar minimum limit, and 23 mbar maximum threshold.
    - The distinction between 1-minute thermal stabilisation and the 2-minute timed observation test duration under IGEM/UP/1B Issue 19.
    - Critical pass and fail criteria, including the zero-drop rule for pipework-only retests and the absolute smell-of-gas failure rule.
    - Mandatory post-test completion steps, including test nipple resealing checks using leak detection fluid and official record-logging requirements.
    For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep
    5 min
  • [ACS CCN1] 22, Low-Pressure Let-By Testing
    This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams.
    In this episode you will learn:
    - The purpose and mandatory sequence of the low-pressure ECV let-by test under IGEM UP 1B standards.
    - Why let-by testing must be completed at 7 to 10 mbar before commencing the 20 to 21 mbar tightness test.
    - Required diagnostic actions, including using leak detection fluid and contacting the Emergency Service Provider when let-by occurs.
    - Differences in control points between low-pressure systems and medium-pressure supply arrangements with regulators.
    - Common exam traps such as opening control valves too fast, omitting cooker lid checks, or proceeding with a leaking ECV.
    For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep
    4 min
  • [ACS CCN1] 21, Tightness Test Preparation, Gauges, and Installation Volume
    This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams.
    In this episode you will learn:
    - How to inspect gas pipework and set appliance-isolation valves prior to tightness testing on the ACS CCN1 exam.
    - How to properly choose, calibrate, and zero a pressure gauge at atmospheric pressure under IGEM standards.
    - How to identify low-pressure versus medium-pressure gas supplies and handle emergency control valves safely.
    - How to calculate Installation Volume (IV) using pipe internal volume, 10% fittings allowance, and meter volume.
    - Essential exam sequence rules, including let-by testing, stabilization duration, permissible drop criteria, and the LST mnemonic.
    For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep
    5 min
  • [ACS CCN1] 20, Identifying Installation Pipework Defects
    This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams.
    In this episode you will learn:
    - How to conduct a systematic visual inspection for installation pipework defects under the ACS CCN1 assessment.
    - How to classify pipework defects using current GIUSP criteria instead of personal judgement.
    - Key standards for pipe supports, joints, wall entry sleeving, and meter box alterations.
    - Requirements for medium-pressure labeling, underground pipe burial depth, and safe routing.
    - The PIPES mental shortcut to quickly recall essential pipework inspection checkpoints during the exam.
    For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep
    4 min
  • [ACS CCN1] 19, Bonding, Fire Stopping, Ducts, and Multi-Occupancy Pipework
    This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams.
    In this episode you will learn:
    - The requirement to apply a temporary continuity bond before breaking gas pipework or disconnecting meters under Gas Safety Regulation 10.
    - Key positioning requirements for main protective bonding within 600 mm of the meter outlet and before any branch pipework under BS 6891.
    - The clear boundary between a gas engineer's duty to visually inspect main protective bonding and electrical installation work that requires electrical competence.
    - Fire stopping standards and mandatory high and low-level duct ventilation for gas pipes in multi-occupancy buildings and protected escape routes.
    - Isolation and identification rules for pipework in flats or maisonettes, including Additional Emergency Control Valves.
    For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep
    5 min
  • [ACS CCN1] 18, Domestic Gas Pipe Sizing and Pressure Loss
    This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams.
    In this episode you will learn:
    - How to apply the 1 mbar maximum allowable pressure drop rule under BS 6891 from meter outlet to appliance inlet.
    - How to calculate cumulative heat input and gas flow rates across shared trunk pipework and branch runs.
    - How to determine equivalent pipe length by combining physical route length with fitting allowances for elbows and tees.
    - How to correctly identify the index run on ACS CCN1 schematic diagrams and use official sizing tables.
    - Why candidate technicians must avoid assuming fixed pipe diameters for specific appliances like combination boilers.
    For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep
    4 min
  • [ACS CCN1] 17, Pipe Routes, Supports, Protection, and Enclosures
    This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams.
    In this episode you will learn:
    - Exact BS 6891 clipping distances for 15mm, 22mm, 28mm, and 35mm copper gas pipework on horizontal and vertical runs.
    - Electrical separation rules requiring 150mm clearance from consumer units and meters, and 25mm from cables and sockets.
    - Wall cavity prohibitions under GSIUR Regulation 19 and correct sleeving practices for solid floors and walls.
    - Structural limits for notching and drilling timber floor joists under Building Regulations Part A.
    - Fire-stopping rules for protected escape routes, MDPE underground burial depths, and corrosion protection for external gas runs.
    For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep
    4 min
  • [ACS CCN1] 16, Copper, Steel, Stainless, and Approved Pipe Jointing
    This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams.
    In this episode you will learn:
    - Key suitability requirements for copper, mild steel, press-fit, and CSST pipework under BS 6891
    - Why soft solder is prohibited underground and the necessity of capillary brazing or approved fittings
    - Crucial identification features for gas press-fit connections, including yellow HNBR seals and correct jaw profiles
    - Manufacturer-specific rules for corrugated stainless steel tubing (CSST) and thread jointing compounds under BS EN 751
    - Essential flux cleaning practices and heat safety precautions during hot work on domestic gas installations
    For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep
    4 min
  • [ACS CCN1] 15, Flueless Appliances, Extractors, and Purge Ventilation
    This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams.
    In this episode you will learn:
    - Permanent ventilation requirements and room volume thresholds for domestic flueless cookers under BS 5440.
    - Purge ventilation rules for internal kitchens and restrictions on flueless water and space heaters.
    - How mechanical extractors, cooker hoods, and tumble dryers create dangerous room depressurisation.
    - The step-by-step spillage test procedure and GIUSP unsafe situation classifications for extractor-induced spillage.
    - How competing solid-fuel or oil appliances impact natural draught gas flues and common ACS exam traps.
    For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep
    5 min
  • [ACS CCN1] 14, Appliance and Compartment Ventilation Calculations
    This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams.
    In this episode you will learn:
    - How to convert gross heat input to net heat input using the 1.11 factor for BS 5440 Part 2 ventilation calculations.
    - How to calculate open-flued room ventilation using the 7 kW net threshold and 5 cm² per kW rule.
    - Differences in high and low level compartment ventilation for room-sealed versus open-flued appliances.
    - Common ACS CCN1 exam traps, including multi-appliance rooms and room-sealed cupboard ventilation requirements.
    - The precedence of manufacturer instructions and regional building regulations over default British Standard figures.
    For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep
    5 min

About UK Exam Prep

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UK exams support professional registration, skilled-trade qualifications, public-service recruitment, citizenship, licensing, and school admissions. Requirements can differ by awarding body and across…