拆除作业.PPT.ppt

Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,*,Demolition,Hazards&Control Measures,Remember!,The CDM Regs 1994 apply to,all,demolition&dismantlement work,Hazards-Physical,Falling from height,Falls through openings&fragile materials,Uncontrolled/premature collapse,Noise,Flying debris,HAVS from tools,Whole body vibration from vehicles,Hazards-Physical,Cause nearby structures to collapse,Live services gas,electric,water,Fire,Broken glass from windows,Unguarded machinery,Floods,Electric shock,Manual Handling,Hazards-Chemical,Dust,Asbestos,Silica,Residual contamination from previous use?E.g.hospitals,industrial processes,Controls,Risk Assessment,Competent,trained staff,Safe system of work(derived from RA),PPE helmets,boots,dust masks etc.,Safe demolition requires planning,Keep people as far away as possible,Use of method statements,Controls,Supervision by competent person,Where possible,demolish in reverse order of construction,Use CDM H&S file if available?,Protect machine cabs to guard against falling objects,Temporary props may be required to support unstable structures,Controls,Remove debris as it builds up to prevent floors/walls collapsing,Disconnect live services(although water may be required in event of a fire),Remove hazardous materials,Provide site hoardings where necessary(about 2.5m high),Do not allow materials to fall into area where people are,Controls,Fans or covered walkways may be needed to catch falling objects,Erect warning notices around hoardings,Remove window panes before demolition,Erect warning notices on doors,especially where floors have been removed,Controls,Damp area down with water,Dog-leg rubbish chutes,or barrier off skip area,Provide safe access&egress(especially where there are no floors),High standard of housekeeping,Secure ladders,Use safety harnesses where necessary,Create a buffer zone around the demolition area,