Document ID: chunk:federal_register_of_legislation:F2023L00060:reg:1870
Version: federal_register_of_legislation:F2023L00060
Segment Type: reg
Provision Reference: reg 1870
Character Range: 38681–39815

1870           Silvered mirrors replaced (ex. Swan Island).

7 Oct 1924     Intensity increased to 20,000 cd.

28 Nov 1931    1st Order lens replaced by 5th Order lens – a 187.5mm four panel with Dalén PR50 pedestal with Acetylene operation.
               Intensity increased to 35,000 cd.

12 April 1985  Lighthouse converts from Acetylene to electric (wind power).
               Dunlite type BP, 12V 2kW wind generator installed on a 6-metre tower.

               Sealed beam array on AGA PRB 24/4 gearless revolving mercury pedestal installed.
               Intensity increased to 65,000 cd.

12 Apr 1990    Lighthouse undergoes solar conversion.

28 Feb 2006    Vega VRB-25 12V, 75W C8 Halogen light installed at lighthouse.
               Intensity increased to 85,336 cd.

Figure 14. Blueprints for conversion of Goose Island to Acetylene operation, 1931. Image courtesy of the National Archives of Australia: A10182, CN 01 130 (© Commonwealth of Australia, National Archives of Australia)

Conservation works
The following table lists the rectification works undertaken to maintain the lighthouse.

Date  Works Completed