What are Residual Hazard that should be included in the Handover Health and Safety manual and O&M manuals?
Since CDM 2007 there has been an increasing emphasis on providing a residual risks section in the health and safety Manual. Some sub-contractors find this particularly confusing because of the apparent similarity with the risk assessment that they are required to make before they start work.
The residual risks in an O&M Manual relate only to those risks that exist for the client once the Sub-Contractor has left the job. So, for example, if there is an installation in a high ceiling and it may require some maintenance [eg changing a light bulb], the residual risk is 'working at height' and the advice section will stipulate that appropriate as careful doing be used.
Below is an example of a residual risk assessment:-
Architectural
Residual Hazard | Location | Comment |
Working at Height | Glass Panels in Facade | The 22no replacement units installed must be cleaned by trained operatives using the cherry picker access parked at Concourse level or the house cradle once it is commissioned. |
Glass Breakages | Bowl side Glazing | In the event that the glass may break it is highly probable it has been caused by means of a collision with elements beyond our control. |
Falls from Height | Decorating Walls and Ceilings | Advise use of mobile tower/safe working platform when carrying out painting. |
Mechanical
Residual Hazard | Location | Comment |
Working at Height | Fan Coil Units | Some fan coils particularly associated with the inner bowl area are located in excess of 4m above the finished floor level. This was unavoidable due to the existing structure of the stadium and the need to distribute the services in the limited space below the main steel works. It has been proven that all the FCU's are accessible via one man mobile elevated working platform. |
Electric Shock | Fan Coil Units & Extract Fans | The fit out has a number of items of plant supply and extract fans in the air handling unit, fan coil units toilet and kitchen extract fans etc. |
Electrical
Residual Hazard | Location | Comment |
Working at Height | Ceiling Lighting | ABC Lighting & XYZ Lighting. |
Toxic Substances | Ceiling Lighting | ABC Lighting & XYZ Lighting. |
Confined Spaces | Riser cupboards | Apply for suitable permit to work system for entry and undertaking maintenance works. |
Toxic Substances | Ceiling Mounted Exit Sign | LMN Lighting |
Electric Shock | Bus Bars & Tap-Off Units | This Equipment Operates at 400v, 3 Phase. |
Electric Shock | Auto Meters | Inspection or maintenance to be carried out by suitably competent and qualified person. |
There are occasions in which the somewhat trivial example shown above will not be adequate. Perhaps when a particular complex or dangerous piece of equipment has been installed, mostly the advice will be two not touch it there and to call in specified and qualified maintenance engineers to hand to handle any issues that arise. However it would be useful to ensure that sufficient technical detail is available in the O&M to enable these tech qualified maintenance engineers to navigate through an unfamiliar system.