Have new work methods or new equipment made the job safer? Are safety procedures followed? Has instruction and training provided to workers been successful? If new legislation or new information becomes available, does it indicate current controls may no longer be the most effective? Is any change planned to any plant or structure that may create a confined space or change the nature of an existing confined space? Has an incident occurred as a result of work carried out in a confined space? If problems are found, go back to any point in the risk management process, review the information and revise any decisions about controls measures. APPENDIX A CONFINED CRITERIA – Confined criteria Confined space? A B C D If the answer to A, B, C of the Is the Is the Is the Does the space present a risk from: and at least space enclosed space not designed or one of D is and or designed intended to yes, then the partially or be, at normal activity Harmful An Engulfment space is a enclosed intended atmospheric airborne or unsafe confined to be pressure flammable oxygen space. occupied while any contaminants level by a person is in person the space Sewer with access       Yes via a vertical ladder Dislodging grain  from a silo with sole      Yes access through a manhole at the top Cleaning spilled  cadmium pigment      Yes powder in a shipping container Inspecting a fuel tank in the wing of       Yes an aircraft Dislodging a sludge blockage in a drain       Yes pit Internal inspection of a new, clean tank       No prior to commissioning Internal inspection of an cement       No silo through a door at ground level
Have new work methods or new equipment made the job safer? Are safety procedures followed? Has instruction and training provided to workers been successful? If new legislation or new information becomes available, does it indicate current controls may no longer be the most effective? Is any change planned to any plant or structure that may create a confined space or change the nature of an existing confined space? Has an incident occurred as a result of work carried out in a confined space? If problems are found, go back to any point in the risk management process, review the information and revise any decisions about controls measures. APPENDIX A – CONFINED CRITERIA Confined criteria Confined space? of the space and activity A B C D If the answer to A, B, C and at least one of D is yes, then the space is a confined space. Is the enclosed or partially enclosed Is the space not designed or intended to be occupied by a person Is the designed or intended to be, at normal atmospheric pressure while any person is in the space Does the space present a risk from: Harmful airborne or flammable contaminants An unsafe oxygen level Engulfment Sewer with access via a vertical ladder       Yes Dislodging grain from a silo with sole access through a manhole at the top       Yes Cleaning spilled cadmium pigment powder in a shipping container       Yes Inspecting a fuel tank in the wing of an aircraft       Yes Dislodging a sludge blockage in a drain pit       Yes Internal inspection of a new, clean tank prior to commissioning       No Internal inspection of an cement silo through a door at ground level       No
Confined-Spaces-COP.docx