5 As a consequence of the incident involving Mr Exner, the defendant was charged with an offence arising under s 8(2) of the Occupational Health and Safety Act 2000.
6 In relation to that offence, it is said that Australand:
FAILED to ensure that persons not in its employment, and in particular, Joel Exner, Christopher Carter, Matthew Martin, Andrew Jones and Adam Fejgl, were not exposed to risks to their health and safety arising from the conduct of its undertaking while at its place of work contrary to section 8(2) of the Act.
7 The particulars of the charge are:
[1] At all material times the defendant was an employer.
[2] At all material times the defendant contracted JB Metal Roofing Pty Ltd and Garry Denson Metal Roofing Pty Ltd to perform metal roofing and wall cladding work on a warehouse building known as 'Costas' at the site.
[3] At all material times Garry Denson Metal Roofing Pty Ltd contracted with Andrew Jones to perform roofing work at the site.
[4] At all material times JB Metal Roofing Pty Ltd directed its employees, Joel Exner, Christopher Carter, Matthew Martin and Adam Fejgl to perform roofing work at the site.
[5] The defendant failed to ensure that a safe system of work was adopted with respect to the installation of metal roofing at the site in that:
(i) the defendant failed to ensure that the safety mesh installed on the roof of the Costas building was adequately secured;
(ii) the defendant failed to ensure that the safety mesh on the roof of the Costas building was adequately overlapped.
8 The prosecution has tendered an agreed statement of facts in the following terms:
[1] At all material times Australand Holdings Limited (ACN 008 443 696), (the defendant), was a company duly incorporated in New South Wales with its registered office situated at Level 3, 1C Homebush Bay Drive, Rhodes, New South Wales.
[2] At all material times, the defendant was an employer.
[3] At all material times the defendant was undertaking the construction of a warehouse building known as 'Costas' at EC1 Business Park, Wallgrove Road, Eastern Creek, New South Wales (site).
[4] On 1 August 2003 the defendant entered into a contract with Garry Denson Metal Roofing Pty Ltd (GDMR) and JB Metal Roofing Pty Ltd (JBMR) to perform metal deck roofing and wall cladding work on the Costas building at the site.
[5] At all material times James Denson was the sole director of JBMR and Garry Denson was a director of GDMR.
[6] On 1 March 2004 a liquidator was appointed to GDMR.
[7] At all material times Garry Denson acted as a general supervisor for the metal roofing work performed by employees of JBMR on the Costas building. James Denson did not supervise the workers at the site.
[8] At all material times the metal roofing work at the site was performed by the following persons:
(a) Joel Exner, 16 years of age, employed by JBMR as a roof labourer;
(b) Andrew Jones, 28 years of age, a subcontractor to GDMR;
(c) Adam Fejgl, 27 years of age, employed by JBMR as a roof labourer;
(d) Matthew Martin, 24 years of age, employed by JBMR as a labourer; and
(e) Christopher Carter, 26 years of age, employed by JBMR as a labourer, (workers).
[9] At all material times the defendant employed, amongst others, the following persons to perform work at the site:
(a) Robert Whittaker, 40 years of age, employed as a site foreman;
(b) Ben Ireland, 35 years of age, employed as a safety coordinator.
Safety mesh
[10] Prior to laying of the metal roofing sheets and insulation, safety mesh was installed on the roof of the Costas building.
[11] The safety mesh is intended to provide fall protection to workers on the roof and to support insulation that is laid on the mesh.
[12] The mesh was two millimetres thick, 50 metres in length and 1800 millimetres in width. The mesh consisted of rectangular sections which were 150 millimetres by 300 millimetres in dimension. At each end of the safety mesh roll there were 13 longitudinal wire ties of approximately 250mm in length.
[13] Each roll of the safety mesh contained a sheet of instructions in relation to the methods of installation. The instructions generally accord with the Australian/New Zealand Standard AS/NZS 4389:1996 for safety mesh (Australian Standard). The safety mesh instructions were simple to follow.
[14] The Code of Practice, Safe Work on Roofs - Part 1 Commercial and Industrial Buildings ("Code") and the Australian Standard provide that the recommended methods of fixing the mesh to metal purlins on a roof is to pass the wire tie at the end of each longitudinal wire through a hole drilled in the top of the purlin and to tie it off with at least four full turns around the wire. The Australian Standard also provides that the longitudinal wires of the safety mesh may be passed once completely around the metal purlin, the tail of each wire being twisted four times around the main portion of the same wire.
[15] If it is necessary to join two rolls of safety mesh at the end of a 50 metre run, the Code and the Australian Standard also provide for the method of fixing longitudinal end joins.
[16] The Australian Standard and the Code also provide that the safety mesh must be side lapped with the adjacent roll of safety mesh. The Australian Standard and the Code vary in their requirements for side lapping.
[17] The Australian Standard provides that the runs of mesh shall be side lapped by 150mm (one mesh spacing), and if the purlin spacing exceeds 1.7 metres, intermediate fixing between runs of mesh shall be provided.
[18] In contrast, the Code provides in clause 3.2 that the runs of mesh should be side lapped by at least 150mm and if the spacing between the purlins exceeds 1.5 metres the runs of mesh should be side lapped by at least 300mm with intermediate fixing of 2 millimetre staples. Intermediate stapling of the mesh should be carried out from underneath the mesh.
[19] Prior to work commencing, an initial job safety analysis for the work was created by Garry Denson and reviewed by Mr Ireland. Mr Ireland required amendments to the job safety analysis and provided GDMR with sample documentation to make the necessary amendments. The sample documentation referred to the activity of installing safety mesh and the hazards involved with the activity including the mesh not being appropriately fastened to the purlins, the mesh not being appropriately lapped or joined and the footwear of workers being inappropriate for roof work.
[20] Garry Denson subsequently amended the job safety analysis and in relation to the installation of safety mesh the hazards identified included the mesh not being appropriately fastened and the possibility that persons might fall through the roof. The action required to eliminate this risk was for workers to wear a safety harness when installing the mesh. The job safety analysis contained no instructions in relation to the method for installing the safety mesh.
[21] GDMR understood that if they did not amend and improve the job safety analysis, the defendant would not permit GDMR to commence work on the site.
[22] The defendant brought the Australian Standard and the Code to the attention of GDMR in a site memorandum dated 13 August 2003 from Mr Ireland and Nick Dona, Site Foreman, to Garry Denson.