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Contents (2001 - 648)
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Occupational Health and Safety Regulation 2001
Repealed version for 7 June 2011 to 31 December 2011 (accessed 19 November 2019 at 11:10)
Chapter 8 Part 8.6 Clause 255
255   Demolition of chimney stacks
(1)  An employer must ensure that the demolition of a chimney stack is carried out only:
(a)  by felling using undercutting or explosives, or
(b)  by the removal of successive sections of metal, or successive courses of brickwork or masonry, from the top.
(2)  The employer must ensure that, if a chimney stack is or is to be demolished by felling:
(a)  the felling is not done in a wind that:
(i)  is likely to cause the chimney stack to fall otherwise than in the intended direction, or
(ii)  exceeds 20 knots, and
(b)  if undercutting is used—the equilibrium of the stack being undercut is gauged in compression by positive means to ensure that sufficient time remains for the safe retreat of workers from the stack when it commences to fall, and
(c)  if the chimney stack could, in falling, endanger the safety of a person or property in a place outside the area under the control of the employer who is carrying out the demolition work—24 hours’ notice of the intended commencement of the work is given to:
(i)  the council of the local government area in which the work is carried out, and
(ii)  a police officer.
(3)  An employer must ensure that, if a chimney stack is to be demolished by the removal of successive sections of metal from the top, or successive courses of brickwork or masonry from the top, overhead protection complying with clause 231 is provided over the discharge end of any chute, hopper, bin or material outlet to protect any person removing material from the discharge area from falling objects.
(4)  The employer must ensure that material is not allowed to accumulate on, or to overload, any such overhead protection.
Maximum penalty: Level 4.