Hi there
Currently there is a recruitment freeze within the metro mental health services due to redeployment throughout both services. Hence not many jobs around at the mo, let alone SRN 3 (CPN equivalent), however it's still worth contacting the main inpatient units to enquire. So a couple of suggestions Graylands Hosp (North Metro) Bentley Hospital or Alma Street Centre in Fremantle (South Metro), Mimidi Park in Rockingham (PaRK Health Service); Mimidi is the newest in-patient service so the most modern. Fiona Stanley Hospital is also opening up an observation area, so a 'stop gap' between ED and transition onto a psych bed.
Hope this helps, good luck:)