Hot Work Permit at the Shipyard: Ship-Dock Coordination
The hot-work permit must coordinate ship and yard: permission to enter a space does not mean welding or cutting is permitted inside it.
Operational Explanation
Define activity, location, duration, responsibilities and interactions with other work before starting. Required certification depends on local law, space type and previous contents; designation of an officer in the SMS does not replace a legally required qualification or authorisation.
The link is the ship–yard operating agreement: it identifies who controls the area, who issues and validates permits, which jobs may coexist and who manages services and isolations. Coordination meetings and handovers update this picture when activities or shifts change. IMCA HSS032 / M221 Rev. 2, §§6.1–6.2.1.
Ship knowledge and authority to start work have distinct roles. In IMCA’s model, the vessel-designated person’s signature on the yard permit after a site visit checks that hazards known on board are managed; it is an internal control, not authorisation to start. The agreed system must show everyone which authorisation is still required.
Regulatory Reference
Apply local law, the yard permit system and ship SMS. MSC.581(110) addresses enclosed-space entry. The US example OSHA: hot-work testing, 29 CFR 1915.14 distinguishes Marine Chemist and Shipyard Competent Person responsibilities; it is not a universal rule for every yard.
As a good-practice reference, IMCA HSS032 / M221 Rev. 2, August 2025, section 5.5 addresses firefighting readiness and dedicated hot-work fire watches; 6.2–6.2.1 addresses coordination of ship/yard permits and simultaneous operations. The guidance does not replace local law, authorizations or the SMS. Define the duration and conditions of the post-work watch in the agreed system. IMCA — Guidance on safety in shipyards, Rev. 2.
Scope of Application
Welding, cutting and other ignition-producing activities during repairs. Also assess adjacent spaces, opposite sides of surfaces, connections, residues and coatings; separately coordinate any enclosed-space entry.
Procedure / How to Complete It
- Identify required authorisations and ship, yard and contractor responsibilities.
- Define the task and permit validity, checking interactions with other work.
- Arrange isolation and checks of atmosphere, residues and connected spaces against applicable hot-work criteria.
- Check ventilation, fire watch, communications and response equipment.
- Stop if conditions change; have them reassessed and obtain the necessary reauthorisation before resuming.
- Close the permit only after the required checks and post-work watch.
| Interface | Evidence to make available |
|---|---|
| Permits and area | Same task and location in ship/yard documents, validity, competent authority, simultaneous work and shift handover. |
| Systems and services | Who maintains ventilation and firefighting arrangements, which circuits or connections are isolated and who controls changes and restoration. |
| Watch | Assigned people, exposed areas including opposite sides, communications, alarm and post-work coverage. |
| Closure and handback | Work finished, checks and watch completed, other permits still open and separate authority to restore the service. |
Treat atmosphere checks separately from control of energy or materials that may enter through connected systems. A test does not demonstrate isolation; an isolation signature does not demonstrate atmospheric suitability. Record references and checks within the agreed process. The US example also regulates isolation coordination, multiple employers and shift changes. OSHA 29 CFR 1915.89, §§(c)(7), (l)–(m).
Practical Example
Ventilation fails during cutting: stop the task, make it safe and request reassessment before resuming. A test at the start of the shift does not establish that conditions remained safe. OSHA: changing hot-work conditions.
In this case, ventilation depends on a yard service and another team changes its configuration. The stop must reach the workers, fire watch and permit controllers; coordination between jobs makes it possible to identify the change, reassess conditions and record who authorises restart.
What Typically Goes Wrong
Using entry readings as hot-work authorisation, ignoring adjacent spaces or continuing after conditions change.
Two permits may describe the same job without sharing the latest system configuration. The risk arises from lost continuity: an isolation removed for testing, a replacement team or an unavailable service must be communicated to those controlling the work and authorising restart.
Common Mistakes Mistake Library
| Mistake | Consequence | How to Avoid It |
|---|---|---|
| Start work with ship and yard permits describing different conditions. | A team may start while isolations or simultaneous activities make the area unsuitable. | Align task, location, validity, isolations and conflicting work at the permit control point before starting. |
| Use an entry permit or the vessel’s internal signature alone as hot-work authorisation. | Work may start without the required specific assessment or authorisation. | Check which certificates and permits authorise that task and who has the required competence. |
| Continue after ventilation loss or a change to a connected system. | Initial conditions may no longer apply, exposing people and spaces to fire or a hazardous atmosphere. | Stop, communicate the change and obtain the required reassessment and reauthorisation before resuming. |
| Close the permit and restore a service without checking other work and the remaining watch. | Another team may remain exposed or a delayed ignition may go unnoticed. | Connect final checks, completed watch and the status of other permits to authorised service handback. |
What the PSCO Checks
Operational Tips
- Define who can stop and who can reauthorise work.
- Record the location, time and person responsible for checks.
- Manage shift handovers and changes in simultaneous activities.
The fire watch must be able to observe exposed areas, communicate and stop work; the agreement should maintain coverage through handovers. Permit closure records the results of checks and the required watch. Removing isolations and returning to service follow the system’s authorised process, considering other work still open. OSHA, fire watches; OSHA 1915.89, §§(i)–(j).
Preparation checklist
- Law and authorisations checked
- Ship-yard permit coordinated
- Adjacent spaces and isolations checked
- Watch and communications operational
- Stop and restart conditions defined
- Final check planned
- Same task, location and configuration in ship/yard controls.
- Necessary services, isolations, checks and responsible people identified.
- Handovers including other open work, watch coverage and changes.
- Final result and service handback distinct and traceable.
FAQ
Related Topics
Certified substantive revision: 13 October 2026 · page fingerprint c0b05b935764