Group Lockout Boxes

Group Lockout Boxes

Group lockout boxes — also known as lockout stations or group lockout devices — are used in energy isolation procedures where multiple workers are simultaneously working on a system or machine that requires isolation. In a group lockout procedure, the primary isolation key (the key to the main isolation point) is placed inside the lockout box, and each worker applies their own personal padlock to the box hasp. The box cannot be opened until every worker has removed their padlock — ensuring the isolation cannot be released while any worker is still in the danger zone. AIMS Industrial supplies group lockout boxes and LOTO (Lockout/Tagout) equipment for Australian workplace safety compliance.

How Group Lockout Boxes Work

The group lockout process begins with the authorised isolation officer: all energy sources are isolated (valves closed, circuit breakers opened), and the primary lock is applied at each isolation point. The keys to these primary locks are placed inside the group lockout box, and the box is locked with the first personal padlock. Each additional worker who needs to work on the isolated system applies their own padlock to the box hasp — a multi-hasp design allows 6, 10, or more padlocks to be applied simultaneously. Work proceeds; when each worker completes their task and is clear of the danger zone, they remove their personal padlock from the box. Only when the last padlock is removed can the isolation officer remove the primary lock keys and re-energise the system.

Compliance Requirements

Energy isolation procedures in Australian workplaces are governed by work health and safety legislation and Australian Standards including AS/NZS 4024.1602 (Safety of machinery — Guards and protective devices — Interlocking guards). The applicable Code of Practice for plant and machinery in each state provides specific requirements. LOTO equipment must be personal — each worker's padlock is unique and keyed only to that worker's key. AIMS supplies Brady, Master Lock, and quality LOTO padlocks and accessories to complete a compliant energy isolation program.

Kits and Components

Complete LOTO kits include a lockout box, padlocks, tags, and a hasp for immediate implementation. Individual components are also available for expanding existing programs. For group lockout box selection and LOTO program supply, contact our team.

Group Lockout Box Best Practices

Group lockout boxes are most effective when they are part of a documented lockout/tagout procedure rather than used informally. Each worker who applies a lock must sign the procedure log before adding their lock to the hasp on the box, and must verify isolation before commencing work. The box key should be held securely — some operations use a separate lockbox for the group box key itself, accessible only to an authorised permit holder. Boxes should be inspected regularly to ensure hasps, locks, and tags are in serviceable condition. Train all relevant personnel on the correct procedure to ensure consistent application across shifts and contractors.