Documented authorisation system controlling specific high-risk tasks (hot work, enclosed-space entry, electrical isolation, working aloft).
Regulatory detail & full definition
Required by ISM Code Element 6. Each permit identifies the task, hazards, controls, persons authorised, validity period, and post-work close-out. Cannot be self-issued — separate authoriser (Master, Chief Engineer, Chief Officer). PTW + JSA (Job Safety Analysis) is the standard pre-task workflow.
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