The scope of this program applies to work performed by Chapman University employees and contractors performing maintenance and renovations in existing University buildings. Hot work activities which occur in new construction are covered under the construction permit and do not require an operational permit for hot work.
Brazing and Soldering - Soldering and brazing uses molten metal to join two pieces of metal. The metal added during both processes has a melting point lower than that of the workpiece, so only the added metal is melted, not the workpiece. Brazing produces a stronger joint than does soldering, and often is used to join metals other than steel, such as brass. Brazing can also be used to apply coatings to parts to reduce wear and protect against corrosion.
Combustible Materials - Solid materials that are capable of burning and igniting.
Cutting - Any process, including grinding, which produces sparks capable of igniting combustible or flammable materials and transmits heat to the work material from a hot gas.
Fire Watch - At least one individual dedicated solely to extinguishing small spot fires and communicating an alarm.
Flammable Compressed Gas - Flammable compressed gases have dangers besides high pressure. These gases can easily catch fire and burn rapidly. These include acetylene, hydrogen, natural gas and propane.
Flammable Materials - Solid or liquid materials that are capable of igniting at a low temperature and continuing to burn.
Grinding - See the definition for Cutting.
Hot Work - Operations such as welding, cutting, burning, heating, grinding, or similar spark, slag, or intense heat producing activities that are capable of igniting combustible materials or flammable atmospheres or providing a source of ignition for a fire. Also defined as cutting and welding operations for construction/demolition activities that involve the use of portable gas or arc welding equipment, open flame or spark-producing apparatus.
New Construction - New work that is comprised of structural and mechanical work creating new buildings.
Nonflammable Compressed Gas - These types of gases do not catch fire easily or burn quickly, but will eventually burn and possess other dangers. The cylinder label and Material Safety Data Sheet (MSDS) will describe the toxic properties and physical hazards posed by specific nonflammable compressed gases. These include: ammonia, argon, carbon dioxide, nitrogen, oxygen, chlorine, and nitrous oxide. Symptoms of exposure include dizziness, unconsciousness, or suffocation under certain circumstances. They can also be harmful if inhaled, and can cause irritation to the eyes, nose, throat, and lungs.
Renovations and Remodels - New work that takes place in an existing building.
Shielding - Non-combustible welding drapes, used in hot work areas. Visible signs should be displayed on shielding while hot work is being performed.
Smoldering - A slow combustion of material without visible light and generally evidenced by smoke and an increase in temperature.
Soldering - Soldering uses metals with a melting point below 800 degrees Fahrenheit. Soldering is commonly used to join electrical, electronic, and other small metal parts.
Torch Operations - A plasma torch is used as an advanced tool for welding and cutting operations. Intense ultraviolet radiation, high noise levels, and gases are generated during this process.
Welding - Welding is the most common way of permanently joining metal parts. In this process, heat is applied to metal pieces, melting and fusing them to form a permanent bond. The following lists the most commonly practiced forms of welding:
Chapman University Employees
Environmental Health and Safety (EH&S)
In the absence of Fire Prevention:
Facilities Director or designee
In the absence of Fire Prevention and EH&S:
Hot work should not be performed if the work can be avoided or completed in a safer manner. When practical, objects to be welded, cut, or heated must be moved to a designated, fixed hot work location.
If hot work must be performed, a hot work permit must be obtained. To expedite the hot work permit process, permit request should be submitted at least two work days prior to the commencement of hot work.
Obtaining a Hot Work Permit
A Hot Work Permit will NOT be issued if the following conditions exist:
Fire Watch - A Fire Watch is required whenever welding or cutting is performed in locations where an incipient stage fire might develop, or whenever any of the following conditions exist:
Warning Signs, Barricades, and Barriers - In order to control traffic, barriers and proper signs must be posted to ensure traffic is prevented from exposure to hot work areas. Shields must be used to prevent exposure to sparks and flashes. A clear path to an exit of at least forty-four (44) inches must be maintained at all times. Whenever possible, vehicular traffic should be kept out of hot work areas while work is in progress. Signs must be posted in the immediate area to alert building occupants not to enter the hot work location.
Isolation of Fire Detection Systems - Fire detection equipment must be protected from false activation and damage. Smoke detectors should be shielded with dust covers or protected with a plastic bag and tape. If hot work impacts the fire detection system, Facilities Management or Fire Prevention must be notified to deactivate, disable, or take off line any devices in the impacted area. Work must not proceed until the deactivation of the impacted fire alarm devices has been confirmed. Minimal impairment of the fire detection systems must be maintained at all times. Project managers, supervisors, maintenance staff, and contractors must ensure fire detection systems are isolated where hot work is being performed, as appropriate, and that all detectors have been uncovered or returned to service once hot work is completed. Detectors shall be uncovered and operational at the end of each work day.
Fire Sprinkler Systems - Sprinkler heads above or near the hot work area shall be covered with wet rags or other non-combustible materials to keep them from activating due to the hot work
Chapman University Staff
Department supervisors shall ensure their employees who perform hot work operations have been properly trained in safety and the proper equipment operations. Additionally, all employees performing hot work or fire watch duties must be trained in the following in order to conduct hot work activities
Contractors are required to provide training to their employees who will be involved in performing hot work. Contractors shall maintain hot work equipment in a safe and operational manner and remove from service any equipment found to be defective. Contractors and their employees shall follow the requirements and safety procedures as set forth in the university's hot work program