Commezbank Control Measures Cell Flashcards
Natural Gas
Electronic supply cut off device on main workshop pipework.
Slam Shut Valve on main Maintenance building isolator.
Isolation valves linked to the building fire alarms.
Yellow Ochre Pipework.
Equipment is subject to Gas Safety checks.
Gas supply to Spray Booth ovens isolates upon activation of the fire alarm (Paint Shops)
Although the Natural Gas pipework inside the buildings is the correct colour, there is contents identification but no direction of flow markings.
EX signage should be fitted at Gas Isolation points.
The external supply pipework which leads into the maintenance building has no identification, the pipework is the correct colour but is showing signs of wear and requires cleaning and repainting.
Gas Detecion and Alarms (within enclosed spaces, such as meter rooms)
Argoshield (Inert Gas) Used for Welding
Trained staff.
Stored on a specific welding trolley.
The welding kit was stored in a very cluttered area of which other items could easily damage hoses, or even valves.
The welding kit should be stored in its own specific area
Petrol 2950L Tank for Vehicles
Sited >4m away from buildings.
Double skinned tank.
Tank is 60 minute fireproof.
New area must have additional impact protection and suitable earthing points for refilling.
The tank should be fitted with a High and High-High alarm to avoid overfilling.
The area should be defined as a Hazardous Area with suitable EX signage in place.
Diesel 3350L Tank for Vehicles
Sited >4m away from buildings.
Double skinned tank.
Tank is 60 minute fireproof.
New area must have additional impact protection and suitable earthing points for refilling.
The tank should be fitted with a High and High-High alarm to avoid overfilling.
The area should be defined as a Hazardous Area with suitable EX signage in place.
Tank must be protected from vehicle impact. Installing an Armco style barrier would be appropriate along with the removal of the two adjacent parking bays.
Solvent Ingrained Rags.
Separate bins for disposing of these items.
The rags are disposed of in black plastic bags which are inside plastic bins with labelled contaminated signs above them, they are then taken outside and emptied into large, wheeled bins ready for collection.
To distinguish between general and contaminated waste, the use of different colour bags inside the bins should be considered.
Spill Kit Procedure
There is no documented Spill Response Procedure for the business.
A procedure should be developed as soon as possible, and should contain details such as (but not restricted to)
Actions in the event of a major spill.
Roles and Responsibilities
Locations of spill kits.
Emergency Contacts.
Specialist Spill Recovery Contractors contact details.
Drainage plans.
All spill kits around site should have their location identified on a site plan, their contents should be appropriate for the risk in that area and they should be on a regular checking frequency.
Interceptors
The business must ensure that the current contractor used to empty the Interceptors is licensed to remove any potential flammable liquids.
Common COSHH Storage Issue
Some CoSHH Cabinets on site were being used incorrectly. Shelves were upside down; products were being stored in the bund area, one cabinet had been modified and other products such as water based paints and cleaning materials were also being stored in them.
All cabinets used for the storage of Flammable Liquids should be complaint with BS EN 14470, any modifications make the cabinet non-compliant with this standard.
Products should not be stored in the bund area.
Shelves should be inserted with the lip facing upwards.
Non-flammable products should be in their own cabinet.
HSG 51 should be followed to ensure that the cabinets are not overfilled. The standard states that:
No more than 50 litres for extremely, highly flammable and those flammable liquids with a flashpoint below the maximum ambient temperature of the workroom/working area.
No more than 250 litres for other flammable liquids with a higher flashpoint of up to 60°C.
Diesel Tanks Table from HSG 176 (Flammable liquids in Tanks) for single tanks.
Tank Capacity m3
Less than or equal to 1 = 1 Metre away
Greater than 1 and less than or equal to 5 = 4 Metres away
Greater than 5 and less than or equal to 33 = 6 Metres away
Greater than 33 and less than or equal to 100 = 8 Metres away
Greater than 100 and less than or equal to 250 = 10 Metres away
Greater 250 = 15 Metres away
*But at least 2 M from doors, plain-glazed windows, or other openings or means of escape. Also not below any opening (including building eves and means of escape) from an upper floor, regardless of vertical distance.
You may find a back-up Diesel generator with a 1000L tank so 1m away is acceptable but note the * comment.
Should you come across a Diesel tank which is 2500L for example and is sited 4m away from a building, that is acceptable, however if during the refilling of that tank, the delivery lorry parks in that 4m space, then this becomes unacceptable and should be raised as an action that the tank should be relocated, smaller tanks are easier to relocate.
Gas Cylinder Storage (Memorise)
1) Incompatible gases should be separated into separate cages. Flammable gases must not be stored with non-flammable gases. Although both flammable, you cannot store Propane with Acetylene. Oxygen must be stored in its own cage.
2) The gas cages should have a minimum separation distance of 3m between them, if this distance cannot be achieved then suitable blast walls of 215mm thick which extend above the top of the tallest cylinder can be built in between gases.
3) To protect the cylinder base from corrosion, they should be raised off the floor slightly by means of a metal grate (inside the cage) or the ground below the cage/s should be slightly sloped to allow water during any inclement weather to run away.
4) Cylinders should be protected from direct sunlight.
5) Cages should be at least 4m from buildings and perimeter fences.
6) Vehicles should not be parked within 5m of these cages.
7) Cages should be locked with suitable warning signage fitted.
8) Cages should be protected from vehicle impact.
