4 The defendant as to the facts relevantly agreed :
3. At all material times the defendant occupied premises located at 25 Powers Road, Seven Hills in the State of New South Wales.
4. At all material times the defendant carried on the business of manufacturing steel products at the Seven Hills premises.
5. At all material times the defendant employed the following persons at the Seven Hills premises:
a) Kum Mok Hong as a crane driver;
b) Steven Topalovic as a supervisor of employees at the 'Blasting and Painting; Building';
c) Atilo Rivera as a dogman; and
d) Giuseppe Damarco as a general hand, labourer and crane driver.
6. At all material times the defendant operated a white coloured 8-ton Chamberlain articulated luffing mobile crane identified by the registered number NZE 413 (the said "8-ton crane") and a blue coloured 10-ton Chamberlain articulated luffing mobile crane identified by the plant number 1526 (the said "10-ton crane") at the Seven Hills premises.
7. At approximately 9.25am on 10 June 1999 Kum Mok Hong sustained soft tissue injury to his neck and back when the 8-ton mobile crane he was operating became unbalanced and toppled over. Hong was taken to hospital where he underwent a CT scan and was discharged after one hour. Hong consulted his general practitioner on one occasion and returned to work on full duties after one week off work. At the time of the accident Hong was operating one of two mobile cranes effecting a 'dual lift' of a fabricated roof truss section located within the 'Blasting and Painting Building'. During the process of carrying the roof truss section from the building to the outside yard, the respective cranes reached a position almost perpendicular to one another. Accordingly, the axis of both cranes were not aligned in the same direction, the 8-ton crane lost stability and toppled over.
8. On 10 June 1999 Inspectors Paul Olive and John Sibilant attended the Seven Hills site and inspected the scene of the accident. A factual inspection report was compiled, a sketch plan made and a series of coloured photographs caused to be taken (the factual inspection report, sketch plan of Inspector Olive and series of coloured photographs are attached hereto - attachment No. "1"). The inspection revealed the following:
a) a steel framed building referred to as the 'Blasting and Painting Building' was located within the confines of the Seven Hills site. The building included an opening of approximately 30 metres at the western end (refer to photographs 1 & 21);
b) a fabricated metal roof truss section rested on the ground outside of the western end of the building. The roof truss section was painted green in colour, triangular in shape, approximately 17 metres in length and 5.6 metres in width (refer to photographs 2, 3, 5, & 8);
c) a white coloured 8 ton Chamberlain articulated luffing mobile crane identified by the registered number NZE 413 was overturned and rested on its side adjacent to the wide end of the roof truss section. The crane was within the building and its boom was pointed in a north-west direction (refer to photographs 2 to 14 inclusive);
d) a blue coloured 10 ton Chamberlain articulated luffing mobile crane identified by the plant number 1526 was upright and held the narrow end of the roof truss section approximately 400 millimetres off the ground with two 6,000 kilogram synthetic slings. The crane was outside the building and its boom was pointed in a northerly direction (refer to photographs 18 to 22 inclusive); and
e) egress from the building was restricted by a fabricated steel walkway section that measured approximately 1.4 metres in width and 20 metres in length. The walkway section was approximately 3 metres from the northern side of the overturned crane (refer to photographs 1, 5, 11, 12 & 14). Egress from the building was further restricted by a fabricated steel work stand that measured approximately 0.9 metres in width and 3.6 metres in length. The work stand was approximately 2 metres from the southern side of the overturned crane (refer to photographs 5, 7, 8, 9, 10, & 13).
9. On the date of the accident a previously fabricated roof truss section weighing 12.74 ton rested upon a fabricated steel work stand located within the 'Blasting and Painting Building'. The roof truss section was required to be moved from the building to a position outside yard as it had recently been fabricated. The defendant charged Topalovic with supervising the task of moving the roof truss section from the confines of the building to the yard outside.
10. Topalovic, Rivera and Damarco attached a total of four 6,000-kilogram synthetic slings to the roof truss section. Two slings were attached to the narrow end of the truss and one sling was attached to each of the two corners of the wider end of the truss. The slings attached to the narrow end of the roof truss section were also attached to the 10-ton crane. The slings attached to the wider end of the roof truss section were also attached to the 8-ton crane.
11. The 8-ton crane, 10-ton crane and roof truss section were all located wholly within the 'Blasting and Painting Building'. The roof truss section rested on a work stand near the wall of the 'Blasting and Painting Building'. The wider end of the roof truss section and the 8-ton crane were located further from the opening at the western end of the building than the narrow end of the roof truss section and the 10-ton crane.
12. Topalovic instructed Hong to operate the 8-ton crane and Rivera and Damarco to perform dogging duties for Hong, that is, direct Hong in the movement of the load when the load was out of his view. Topalovic operated the 10-ton crane.
13. The cranes were positioned such that the 8-ton crane operated by Hong faced toward the outside of the building and the 10-ton crane operated by Topalovic faced toward the inside of the building. The roof truss section was lifted from the work stand by both cranes. From the outset of the lifting and carrying operation the booms of the two cranes were slightly out of alignment due to the efforts of Hong and Topalovic to avoid striking the work stand when the roof truss section was carried. The 8-ton crane was moved in a forward direction whilst the 10-crane was moved contemporaneously in a backward direction. It was not possible for the cranes to move from the building in a straight path. During the process the 10-ton crane turned to afford the 8-ton room to manoeuvre and, upon exiting the building, the 10-ton crane turned further in the direction of a pre-determined position upon where it was intended the roof truss section was to rest outside the building. The 8-ton crane remained within the building and could not similarly turn. As a consequence, immediately prior to the accident, the respective cranes had reached a position almost perpendicular to one another. Accordingly, the axis of both cranes were not aligned in the same direction and the 8-ton crane lost stability, the right hand side of the crane lifted from the ground and toppled over causing the stated injuries to Hong.
14. Throughout the process of lifting and moving the roof truss section Damarco and Rivera were directing Hong in the movement of the load. Damarco was in a position approximately 2 metres from the left hand side of the crane operated by Hong. Rivera was in a position approximately 1 metre from the right hand side of the crane operated by Hong. Whilst neither Damarco nor Rivera sustained actual injury both were placed at risk of injury when the axis of both cranes became misaligned and the 8-ton crane lost stability and toppled over.
15. Relevantly, Australian Standard 2550.1 - 1993 : Cranes - Safe Use Part 1: General Requirements (AS 2550.1 - 1993) provides the following in relation to multiple crane lifting:
2.2 MATTERS TO BE CONSIDERED . At appropriate stages during planning, the following matters shall be considered, where applicable:
(s) The documentation of work procedures where the lifting operation is not of a routine type, e.g. multiple crane lifting.
7.19 MULTIPLE CRANE OPERATION
7.19.1 General Hoisting a load with two or more cranes requires greater attention to planning and supervision than hoisting with one crane, because the effects of the relative motion between the cranes may induce additional loadings on the cranes, the load and the lifting gear. Because of this and the difficulty in monitoring these additional loads, multiple crane hoisting shall be used only when the physical dimensions, characteristics, mass or required movement of the load prevent the operation from being carried out by a single crane.
Multiple cranes hoisting shall be planned with extreme care and shall include an accurate assessment of the proportion of the load to be carried by each crane.
7.19.3.5 Pick and Carry In pick and carry operations the axis of both or all cranes shall be kept aligned in the same direction. The possibility is that once out of alignment, the movement of one crane may push or pull either the other crane or cranes and cause loss of stability.
7.19.4 Supervision One competent person who shall not be one of the crane operators, shall be in attendance and in overall control of the multiple crane operation. Only this person shall give instructions to the crane operators except in an emergency, when a stop signal may be given by any person observing a situation leading to danger. If all necessary locations cannot be observed from one position, additional competent personnel should be located at suitable positions to observe and report to the person in charge of the operation.
["competent person" is defined in clause 1.4.1 as a person who by reasons of qualifications and experience has the knowledge and skill necessary to perform the duties with respect to which the expression is used.]
16. An investigation by the informant revealed the following:
a) prior to the occurrence of the accident a similar roof truss section was moved from the building to the yard outside by operation of the same 8-ton and 10-ton cranes without incident. On that occasion Hong operated the 10-ton crane in a reverse direction and Topalovic the 8-ton crane in a forward direction. The roof truss section was positioned such that the narrow end was located further from the opening at the western end of the building than the wider end. As a consequence, there was greater room for the 8-ton crane to manoeuvre within the building. Furthermore, Topalovic had greater experience in operating cranes involved in duel lifts within confined areas than Hong;
b) at the time of the accident, egress from the building was restricted due to the proximity of the roof truss section to the wall of the building, the presence of the fabricated walkway and the presence of the fabricated work stand within the building. This effected manoeuvrability of the 8-ton crane;
c) contrary to clause 7.19.3.5 of AS 2550.1 - 1993, because of the relative movements of the two cranes during the lifting operation, the axis of both cranes involved in the lifting operation were not kept aligned in the same direction;
d) Hong was experienced in the operation of a single crane to hoist a load. He had not operated a crane in concert with another crane to hoist a load until 12 months preceding the date of the accident when he first performed work at the Seven Hills premises. On his commencement and at all times leading up to the date of the accident he had not received instruction or training from the defendant particularly directed toward lifting operations involving multiple cranes.
e) Hong described the process of hoisting loads with two cranes as 'not routine or usual' and occurring on 'rare occasions'. He described his previous involvement in hoisting loads with two cranes as extending to 'some light, smaller objects' that were lifted and carried 'without any problem'. Topalovic considered he himself had been personally involved in hoisting loads with two cranes 'hundreds of times'. He considered the frequency of such an operation varied from 'some times six per week and then none for months' depending on the rate at which items were fabricated at the site;
f) contrary to clause 2.2(s) of AS 2550.1 - 1993, on the date of the accident, the defendant did not have in place a documented work procedure for multiple crane lifting. The defendant did have in place a documented work procedure entitled "Managing Loads" - identified as SP-97-06 (a copy of SP-97-06 is attached hereto - attachment No. "2"). The document envisaged the procedure contained within would be used in conjunction with Codes, Regulations and Standards of local authorities and prescribed the responsibilities of management and supervisors in relation to the movement of loads. However, the written document did not specifically address lifting operations involving multiple cranes, refer particularly to AS 2550.1 - 1993 or make reference to the greater attention, planning and supervision required for lifting operations involving multiple cranes
g) contrary to clause 8(2) of the Occupational Health and Safety (Certificates of Competency) Regulation 1996, Rivera and Damarco were engaged in carrying out scheduled work (dogging) without holding a recognised qualification in relation to work of that kind. Furthermore, contrary to clause 9 of the Regulations, Rivero and Damarco were not engaged, and had never been so engaged, in a recognised course of training relating to the kind of schedule work (dogging), nor where they keeping and maintaining a written record of training in accordance with the requirements of clause 29.