Document ID: chunk:federal_register_of_legislation:F2014L00095:body:0:p27
Version: federal_register_of_legislation:F2014L00095
Segment Type: other
Provision Reference: 
Character Range: 75847–83341

a).

                                                                                                                                                                                                                                                                 Part-spherical roof (dome­/cu­pola) of sheet galvanised iron curved both ways, on curved iron rafters attached to cast iron gutter ring. Heat vent tube still in place.                                                                                                     The lantern is a characteristic elem­ent of lighthouses of its type (criterion d).

                                                                                                                                                                                                                                                                 All in good stable condition.                                                                                                                                                                                                                                               The lantern contributes to the aesthetic value of the lighthouse (crit­erion e)

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             The lantern demonstrates an innovative local response to the problem of econ­omical lighthouse construction (criterion f).
Mercury float pedestal

(Image: AMSA)                                                         Manufactured by Chance Brothers & Company, Birmingham, UK and installed at Dent Island c. 1927.                                                                                            Standard Chance Brothers & Company fourth order mercury float pedestal from which the clock, drive gear, lamp, lens and mercury have been removed.                                                                                                                          Highly significant for this reason:

                                                                      In 1983 the fourth order dioptric rotating lens and kerosene lamp equip­ment were re­moved, the mercury drained from the trough, and the pedestal adapted to sup­port an electric beacon.  In good stable condition.                                                                                                                                                                                                                                                   The pedestal is a rare surviving example of a small (fourth order) mercury float pede­stal (criterion b).

Solar powered equipment

                                                                      The system was installed in 1983.                                                                                                                                                          Three solar panels attached to the balcony handrail on aluminium frame.                                                                                                                                                                                                     Not significant.
(Image: AMSA)
                                                                      In 2010 the ML-300 beacon was replaced with an LED beacon.                                                                                                                                 Six batteries on galvanised steel rack in the lower room of the tower, with control box and associated cables.                                                                                                                                                              This is a typical set of current stan­dard navigation equipment of which many other examples are in service.

                                                                                                                                                                                                                                                                 LED self-con­tained fixed beacon mounted on the lamp pillar of the mercury float pedestal.

6.4. The rest of the lightstation (GBRMPA property)

Element                               History                                                                                                                                                                                          Description and condition                                                                                                                                                                                                                                                                            Significance
2 Engine room

                                      Built at some time in the 1930s or 1940s to house a diesel electric lighting plant for lighting the cottages.                                                                                    Timber-framed, gable roofed, single room building on concrete slab on ground. Roof sheeted with Super Six asbestos-cement, with matching accessory ridge, gable and vent pieces. Walls sheeted with flat asbestos-cement.                                                                            Moderately signif­icant for these reasons:

(Source: AMSA, drawing no. QA11840)   Later adapted by successive replacement of the generator sets.                                                                                                                                   Timber awning casement windows; timber framed and sheeted doors.                                                                                                                                                                                                                                     The engine room demonstrates the development and operation of the lightstation, par­ticularly the provision of electricity for radio operation and the keepers' domestic purposes (criterion a).

                                      In 1999 the two gener­ator sets in the building were installed. These are not assoc­iated with use of the site by light­keepers.                                                                 The building does not contain any major equipment from the manned lightstation period, but does contain small remnants from that period.                                                                                                                                                             Provision of domestic electric lighting for lightkeepers' quarters was a typical feature of lightstations from about the 1930s (criterion d).

                                                                                                                                                                                                                                       There is a corrugated iron rainwater tank, on a