Minnesota West Policies
Chapter 6 - Facilities
6.20.12 Hot Work Program
Hot Work is welding, oxyacetylene cutting, hot riveting, grinding, chipping, soldering, and other activities that produce sparks or use flame. The portability of the equipment and its careless use outside areas specifically designed for its safe use can increase the likelihood of fires that damage facilities and interrupt the institution's mission. To ensure that portable cutting, welding, and other hot work for maintenance, construction, or modification is done safely, a permit system is required.
The principal hazard associated with portable hot work equipment is that it introduces unauthorized ignition sources into random areas of the facility. Heat sufficient to start fires or ignite explosive materials may come from a number of sources, including:
- The open flame of a torch.
- Metals being welded or cut.
- Molten slag or metal that flows from the work.
- Sparks that fly from the work.
- Improperly handled or improperly applied grounding clamps during arc welding.
The following guidelines shall be followed by all employees and contractors on MnSCU campuses during all hot work operations except for those specifically designated for such work such as welding shops located in a maintenance or instructional area. The local Facility Manager shall inspect the area where hot work operations will be performed before a hot work permit is issued. Precautions to be followed before, during, and after completion of hot work operations are listed in the following guidelines. Additional information may be found in NFPA 51B.
All personnel directly involved in the use of and supervision of equipment that is utilized in hot work shall be familiar with the equipment, the hazards of working with the equipment and the actions required to prevent and extinguish fires when and if they occur.
The basic precautions for fire prevention in welding or cutting work are:
- A Hot Work Permit shall be filled out for each hot work job and be kept available at the job site.
- Fire Hazard Removal. If the object to be welded or cut cannot be moved, all movable fire hazards in the vicinity should be taken to a safe place away from the area (at least 35 feet).
- Guards/Welding Blankets. If the object to be welded or cut cannot be moved, and all fire hazards cannot be moved, then guards shall be used to confine the heat, sparks, and slag, and to protect the immovable fire hazards. Approved welding blankets are to be used to cover combustible materials.
- Automatic Sprinkler Protection. If hot work operations are to be conducted in a building protected by automatic sprinklers, it must be verified that the sprinkler system is in service before conducting any hot work operations.
- A Fire Watch shall be continuously present during the entire hot work activity and 30 minutes after completion. In addition, the work area shall be monitored every 30 minutes for 4 hours after the welding and cutting is complete.
- Restrictions. If the requirements listed above cannot be followed, welding and cutting should not be performed.
- Permits shall be issued by local Facility Manager to only the individual performing the actual cutting or welding operation.
- Permits shall be issued and logged on a job-to-job basis. No permits shall be issued for general work in any location. Each specific job shall be issued a separate permit.
- Once issued, the permit shall be posted in a conspicuous location near the work site so that it may be observed during welding or cutting operations.
- Permits shall not be approved for any length of time exceeding the normal shift hours of the welder or cutter except:
- When welding or cutting operations are planned to be continued into the next shift with the same welder or cutter;
- When emergency repair work warrants the continued operation of cutting and/or welding into the next shift.
- Logs will be maintained to record the issue and retraction of hot work permits. The log shall be kept in such a manner as to identify each permit issued, the time of issue, time of completion, work area, and other necessary information as required.
Authorization (Provided by Building Services Supervisor):
- Authorization shall be obtained from the Building Services Supervisor.
- Authorization shall not be given for hot work operations until all safety precautions and requirements listed on the permit are met. Under no circumstances is a permit to be issued sight unseen. An inspection of the work site must be conducted by the authorizing agent prior to authorization.
- Authorization shall not be granted for hot work operations if:
- The welder or cutter is not properly trained in welding or cutting operations (as determined by the Facility Manager).
- Fire Watch is not identified and present at work site.
- If welding or cutting equipment is not in proper operating condition and free from defect or damage.
- If the authorizing individual feels that the operation may jeopardize the safety and welfare of workers, residents, and/or students and staff in the vicinity of the work.
Approved by: Ron Wood, President
Date: July 1, 2003
History & Revision: