Compliance, Duty of Care and Legal Responsibilities
The framework you are working inside
A portal boom crane (CP) licence sits inside a general safety-duty framework. Understand the layers: the WHS Act sets broad duties; the WHS Regulations set specific obligations for plant, high risk work licensing and registrable plant; Australian Standards and the manufacturer's manual fill in technical detail; and site procedures add local rules. Questions often test which layer creates a legal duty versus which is good practice. Only the Act, Regulations and licence conditions are legally enforceable; a standard becomes enforceable when referenced by regulation or adopted by the PCBU.
Who owes what
Your duty as an operator is to take reasonable care for your own safety and that of others, follow instructions and use controls as trained. The PCBU (person conducting a business or undertaking) must provide a safe system of work, competent supervision, information and training, and maintain plant. Officers must exercise due diligence. Traps include assuming the PCBU's duty replaces yours (it does not), believing a licence makes you competent for every crane type (it is class-specific), and thinking a verbal instruction overrides a safety procedure.
Licence conditions and records
Know that the licence must be carried or available, that high risk work must be performed only by a licensed person, and that you must not operate while impaired by fatigue, drugs or alcohol. Report incidents and notifiable events promptly; keep maintenance and inspection records.
Worked rule of thumb
If you are unsure whether an instruction is lawful and safe, apply the hierarchy: can it be done safely as asked? If not, stop, isolate the hazard, and escalate to the supervisor. Document the decision. A useful prompt is "safe, legal, authorised, documented" - if any of the four fails, do not proceed.