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The Temporary Works Forum (TWf) has issued TWf Information Sheet No. 8, Concerns over substandard or unverifiable material, component and equipment substitutions in temporary works (Ref: TW19.057). 

Members have reported a number of concerns, particularly in relation to proprietary scaffolding, hoists, anchors, bolts, threaded bars, re-use of steel sections and the mixing of temporary works equipment (TWE) from different suppliers.  Safety critical items that could lead to catastrophic collapse often include simple fixings/components. 

Risks include:

• serious injury and/or fatalities;
• collapse of temporary works equipment or the structures they support;
• invalid guarantees and insurance;
• damaged reputation.

General advice is given, aimed at:

• the temporary works designer (TWD);
• those responsible for procurement in principal contractors (PC) and sub-contractors;
• TWE suppliers and manufacturers;
• on site pre-use checks.