The Act requires the Speaker and the President to keep each inspection report "in safe custody" and not table it until at least 30 days after delivery. The Inspector notes that "Other Western Australian statutory officers do not face such a long embargo."
The cost of that rule was seen in May 2023. The Inspector's report on Banksia Hill and Unit 18, which described youth custody as in "acute crisis", was, in the words of the Inspector's media release, "laid before both Houses on 8 May 2023, one day prior to the most recent riot at Banksia Hill Detention Centre (9-10 May 2023)". The report was not public until 8 June. The embargo is a matter for Parliament, not the Inspector.
Sources: Inspector of Custodial Services Act 2003 (WA) ss 34-35; OICS Annual Report 2024-25 p 12; OICS media release, Report 148, 8 June 2023; Report 148 Conclusion page (oics.wa.gov.au).