HRS §526-10
When a disclaimer takes effect for a power of appointment
This section says when a person's refusal of property (a disclaimer) becomes effective in two situations involving a power of appointment. It only sets the timing—it does not create other rules. If you are named in a power of appointment, your disclaimer takes effect at a specific point, depending on your role.
everyone
The statute, as written — Disclaimer by appointee, object, or taker in default of exercise of power of appointment
(a) A disclaimer of an interest in property by an appointee of a power of appointment takes effect as of the time the instrument by which the holder exercises the power becomes irrevocable. (b) A disclaimer of an interest in property by an object or taker in default of an exercise of a power of appointment takes effect as of the time the instrument creating the power becomes irrevocable.
LawTrove is not legal advice. The summary above is a computer-generated restatement — the authoritative text is the official version linked above.