Leasson Table

AOVs

Being blocked by external scaffold

Inform method statements

AOVs

Being forced open by occupiers/smokers

Education of occupiers

AOVs

Rooflight used to access roof

Upgrade actuator

Fire Door

Closer disconnected

Record torque and speed of closing

Fire Door

Painted or warning sticker removed

Education of occupiers

Fire Door

New flooring fitted, creating gap

Training, inspection and sign-off

Sprinkler Systems

Compressed air being used to flush water but creating oxidisation and leaks

Standardised tasks and training

Fire Door

New door bell fitted, compromising penetration

Education of occupiers

Compartmentation

30 min foam used on 60 min door or damper

Training, inspection and sign-off

Compartmentation

Water ingress damaging fire integrity

Inspection and better asset records

Smoke control

Smoke seal on door damaged when easing a non-closing fire door

Training, inspection and sign-off

Cladding

Fire stopping deteriorated due to water ingress

Fix leak and replace fire stopping

Penetration Seals

Collar installed within batt then angle used to ‘support’ it but using drywall or wood screws and threaded rod with bolts unlikely to have come from a tested solution

Penetration Seals

Pipe fouling the wall, pipe in first

Penetration Seals

Inappropriate use of ‘fire rated foam’

Penetration Seals

Inappropriate use of ‘fire rated foam’

Penetration Seals

Firestop services at floor level, through installed services

Penetration Seals

Pipe chase with no closers installed before boxing in

Penetration Seals

Edges not coated on top level, firestop products unlikely to be tested for services, not sealed correctly to prevent smoke etc

Penetration Seals

Dry board joints and inappropriately sealed services

Penetration Seals

Dry board joints and inappropriately sealed services, no seal within tray

Penetration Seals

Dry board joints, likely to be combustible insulation passing through without proper sealing /closer

Penetration Seals

No sealing of services,

Penetration Seals

No sealing of services, batt stops and then suspended ceiling, batt cannot compression fit against suspended ceiling

Penetration Seals

Dry board joints, no closer and exposed metal

Penetration Seals

Boards have fallen out therefore indicative of dry installation, mastic used as a mortar to secure in place

Penetration Seals

Close proximity of other elements of structure limit access for air seal / fire stop

Penetration Seals

Access to wallhead after services installed

Penetration Seals

Interface of wall, deck and partition leaving void along length of block wall

Penetration Seals

Inappropriate sealing of partition wall

Penetration Seals

Riser still to be sealed at floor level,

Penetration Seals

Inside of riser, damaged walls, not taped and filled, timber penetrations unprotected, no access to seal, combustible soffit of riser, plastic pipe passing through wall with no closer

Penetration Seals

Out of line damper, gaps in wall

Compartmentation

Poorly installed and possibly wrong product

Check manufacturer installation method

Compartmentation

Failed compartmentation

Inappropriate materials

Replace with fire rated material appropriate for location (movement, dimensions, etc)

Dry Lining and Fire Walls

New installation

Core hole then firestop to prevent facing board from breaking

Compartmentation

Cables

Void created for service too large and next to ceiling trim

Reduce core sizes – reflects fire stop test solutions

Compartmentation

Wall – incomplete and breached

Unfinished, service penetration unsealed

Finish sheeting before services installed, protect steel framing

Cavity Barriers

Slab Edge / Compartment

Programme

Consider installation options before this stage