ISO/WD 23224

Drilling and foundation machinery — Safety — Horizontal directional drilling (HDD) machines ISO/WD 23224

Scope

This document specifies the safety requirements for horizontal directional drilling (HDD) machines (hereafter referred to as HDD machines) as defined in ISO 21467:2023 which are designed primarily for drilling through the earth in a mostly horizontal direction.
This document is applicable to the following HDD machine types:
portable HDD machines;
pedestrian-controlled HDD machines;
towed HDD machines;
self-propelled HDD machines;
ride-on HDD machines;
remote-controlled tramming HDD machines;
skid-mounted HDD machines;
pit-launched HDD machines;
surface-launched HDD machines.
NOTE Some HDD machines can include a combination of types or characteristics noted above.