Questions

Start with the real engineering question.

These pages are written for the moment before an engineer chooses a standard, clause, repair method or inspection path. Each question page gives a practical answer, warning signs, a step-by-step review pathway and detailed case studies.

Good engineering decisions usually start with the equipment, task, duty and evidence available — not with a standard number or a preferred answer.
Plant & repairs
01

Is this a repair or a plant modification?

A detailed decision pathway for sorting true restoration work from changes that alter load path, duty, controls, safety function or compliance basis.

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Plant & repairs
02

Can a cracked component be weld repaired?

How to assess crack mechanism, material, duty and inspection before deciding whether repair, redesign or replacement is appropriate.

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Pressure equipment
03

Does my air receiver need registration?

A practical screening guide for pressure-equipment identity, hazard level, documentation gaps and registration-related questions.

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Steelwork
04

AS 3990 or AS 4100: where should I start?

How to decide whether the steelwork should be approached as mechanical equipment steelwork, structural steelwork or a defined hybrid interface.

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Inspection
05

Which NDT method should I discuss with an inspector?

A plain-language guide to matching inspection purpose, defect type, material and access to the right NDT conversation.

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Engineering decisions
06

When should the OEM be involved?

A framework for deciding when original-equipment-manufacturer input is useful, necessary or critical to the engineering basis.

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HVAC & ventilation
07

Does high indoor CO₂ prove the ventilation is non-compliant?

How to use CO₂ as ventilation evidence without turning one sensor reading into a false compliance test.

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HVAC & ventilation
08

Can natural ventilation replace mechanical ventilation?

A practical pathway for deciding whether permanent openings provide a valid natural-ventilation strategy.

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HVAC & fire safety
09

Does this HVAC change affect fire and smoke control?

Screen fan, AHU, damper, duct and control changes for hidden fire-mode and smoke-control impacts.

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HVAC maintenance
10

Is our HVAC maintenance program enough for microbial control?

Move beyond contractor attendance to asset-based maintenance, defect close-out and useful records.

Open question →