HKIE Professional Assessment - Gas Discipline study plan

Map the anatomy of a Hong Kong town gas transmission and distribution network from town gas plant through governor stations to district medium-pressure mains and service laterals, and label each tier on a one-page system sketch

Distinguish medium-density polyethylene (MDPE) and steel mains by operating pressure tier and justify material selection for each tier using pressure, corrosion and jointing arguments

Compute the pressure drop across a simple series main section using a standard flow-pressure relationship and state the assumed friction factor and roughness you used

Explain the role of district governors, district valve arrangements and network segmentation in maintaining supply continuity

Identify the design inputs you would request before sizing a new estate distribution main: peak demand, diversity, allowable pressure drop and future load

Size a low-pressure service pipe and internal riser run for a multi-storey residential building using an equivalent-length method and tabulated sizing data, documenting every assumption

Apply diversity and simultaneous-demand factors to a domestic and a commercial load profile and show how the chosen factor changes the pipe size

Compare allowable pressure loss criteria for upstream of the meter and downstream of the meter and explain why the downstream allowance is tighter

Select and justify meter type, meter position and isolation arrangement for a residential and a commercial case

Critique a given (synthetic) riser layout for accessibility, compartmentation and future maintenance access

State the composition ranges and key properties of town gas, natural gas, LPG vapour and LNG-derived gas, and explain how Wobbe number governs interchangeability

Calculate stoichiometric air requirement and theoretical CO2 and water vapour yield for methane and for a representative LPG mixture, showing each step

Explain flame stability, lift-off, light-back and incomplete combustion in terms of aeration, port loading and burner design

Diagnose three combustion-fault scenarios from flue gas readings (CO, CO2, excess air, flue temperature) and state the corrective action for each

Relate combustion air requirement, dilution and flue dilution to ventilation rate and room air-change criteria for an appliance in an internal space

Design a ventilation strategy for an internal commercial kitchen and for a residential open-flue appliance, sizing openings against appliance rating and dilution needs

Trace a flue route through a building and identify every point where flue terminal position, recirculation, building overhang or adjacent opening creates a hazard

Build a hazard register for a gas installation using a recognised risk-scoring approach, scoring likelihood and consequence explicitly

Apply the hierarchy of control to gas leak, fire, explosion and carbon monoxide exposure scenarios and justify the chosen controls

Explain how gas detection, emergency isolation and interlock systems reduce risk, and state their failure modes

Assemble a personal index of the Hong Kong statutory and code framework relevant to gas installations, noting for each instrument the scope, the duty holder and the type of obligation it imposes

Distinguish the roles of the gas supplier, the registered gas installer, the registered contractor and the authority in approval, commissioning and ongoing inspection

Map notification, approval and inspection stages for a new installation and for an alteration to an existing installation onto a single process timeline

Explain the legal and professional consequences of working outside registration or competence, and the reporting duty when an unsafe installation is found

Identify which code clauses you would cite to justify a refusal to commission an installation, and record the citation format you would use

Compare bulk LPG storage options (underground, above-ground, mounded) on separation distance, bunding, fire protection and access, and select one for a constrained urban site with justification

Describe the LNG receiving, storage, vaporisation and send-out chain and identify the safety systems that protect each stage

Write a commissioning sequence for a new installation from purging and pressure testing through strength test, tightness test, appliance commissioning and handover

Specify the test medium, test pressure, hold duration and acceptance criterion for a strength test and a tightness test, and explain why the two differ

Build a preventive maintenance schedule for a commercial installation covering appliance, flue, controls, emergency devices and documentation

Prepare a written response to a client who insists on a cheaper, non-compliant pipe route, stating the technical basis, the risk and the professional position without personalising the conflict

Identify the ethical duties triggered when you discover another party's non-compliant work during commissioning, and set out the escalation sequence

Structure a project programme for a gas installation using defined work packages, dependencies, hold points and inspection sign-offs

Evaluate hydrogen blending, biomethane injection and electrified heating against gas network decarbonisation goals, stating one technical constraint and one infrastructure implication for each

Quantify the energy and emissions benefit of a condensing appliance or a heat-recovery measure using a simple before-and-after calculation

Re-derive the network pressure-drop and pipe-sizing calculations from memory under time pressure and check the answers against your week 1 and week 2 sheets

Re-score the week 4 risk register with fresh eyes and justify any changed scores

Answer timed mixed-domain questions spanning network design, sizing, safety and regulation, then classify every error as knowledge gap, misreading or calculation slip

Recite the regulatory map from week 5 without notes and correct any drift in duty holder or obligation

Write a 10-point pre-exam checklist covering assumptions to state, units to confirm and common traps to avoid