Which of the following activities is included in Class 3 trigger task?

Class 3 trigger tasks are activities that involve high levels of lead exposure and are typically categorized under the most hazardous tasks. Abrasive blasting is a process that uses high-pressure air to propel abrasive materials against a surface, which not only removes unwanted material but can also unleashing a substantial amount of lead dust into the air if lead-containing materials are involved.

This activity is classified under Class 3 due to the significant risk it poses to workers in terms of inhalation of lead particles, thereby requiring strict safety measures and monitoring. Understanding the nature of this task is crucial for lead safety protocols, as it highlights the need for adequate protective equipment and training for those involved in lead abatement and management activities.