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Historic Preservation - Technical Procedures

Spectitle:

Fire Prevention Precautions For Hot Work

Procedure code:

0110001S

Source:

Us Custom House/New Orleans, La - Fromherz Engineers, Inc.

Division:

General Requirements

Section:

Special Project Procedures

Last Modified:

12/03/2012

Details:

Fire Prevention Precautions For Hot Work



FIRE PREVENTION PRECAUTIONS FOR HOT WORK


PART 1---GENERAL

1.01 SUMMARY

    A.   The following safeguards shall be observed in performing
         hot work, such as welding, cutting, soldering, brazing,
         and other operations where open flames or implements
         utilizing heat are used.

l.02 QUALITY ASSURANCE

    A.   Regulatory Requirements:

         1.   The contractor shall ensure that operations
              involving the use of open-flame or electrical ARC
              equipment are not conducted until a GSA Form 1755;
              Permit for Welding, Cutting, and Burning has been
              completed and signed by the Buildings Manager each
              day such activity is to occur.

         2.   Prior to commencing operations, a positive
              determination shall be made if it is impractical to
              conduct the hot work in a shop area or outside of
              the building. This determination shall be made by
              the Government Engineer, Buildings Manager, or
              responsible Government supervisor at the job site.

         3.   Prior to operations, the job site shall be visited
              and suitable locations established for the portable
              equipment during actual operations and storage
              during non-working hours. The responsible
              supervisor for the Contractor and the Government
              representative (as designated in the preceding
              paragraph) shall confer and decide upon such
              locations with the Government representative's
              decision being final in event of disagreement.

         4.   The Contractor shall notify the local Government
              Representative of the area of operations for each
              day and of all subsequent changes that occur. This
              is necessary to assure inspection of all areas by a
              Government representative.

         5.   The Contractor shall notify the local Government
              representative of all locations where hot work is
              to be performed no later than the morning the work
              is to be performed.


PART 2---PRODUCTS

                           [Not Applicable]


PART 3---EXECUTION

3.01 EXAMINATION

    A.   Prior to commencing operations, a positive determination
         shall be made that it is impractical to conduct the hot
         work in a shop area or outside of the building.  This
         determination shall be made by the Government Engineer,
         Building Manager, or responsible Government supervisor at
         the job site.

    B.   Before operations commence, the Contractor shall furnish
         personnel to serve as a fire watch (or watches) for
         location(s) where hot work is to be done. (One fire
         watcher may observe several locations in a relatively
         small contiguous area if approved by the Government
         representative.) Each fire watch shall have a
         Contractor-furnished, suitable type, fully charged,
         operable fire extinguisher. The Contractor is responsible
         that the fire watcher knows how to operate the fire
         extinguisher and how to turn on a fire alarm and/or
         summon the fire department.

    C.   Check the opposite side of walls, floors, ceilings, or
         roofs before starting operations and take suitable
         precautions to minimize the hazard for a fire starting or
         communicating to the opposite side from operations.

3.02 ERECTION, INSTALLATION, APPLICATION

    A.   Combustible Material:

         1.   Hot work shall not be done in or near rooms or in
              areas where flammable liquids or explosive vapors
              are present or thought to be present. In the latter
              case, a combustible gas indicator (explosimeter)
              test shall be made to assure that the area is safe.
              The Contractor is responsible for arranging for
              such test and he shall bear such charges as may be
              incurred.

         2.   Insofar as possible, the Contractor shall remove
              and keep the area free from all combustibles, i.e.,
              rubbish, paper, waste, etc., within a twenty-five
              (25) foot radius from operations.

         3.   If combustible material cannot be removed, the
              Contractor shall furnish fireproof blankets and
              cover such materials with them, insuring that no
              openings exist into which sparks can penetrate. At
              the direction of the Government representative,
              wood floors, walls, and ceiling shall be wet down
              thoroughly with water before, during, and after
              operations to afford adequate protection.  NOTE:
              TAKE SPECIAL CARE NOT TO DAMAGE HISTORIC WOOD
              FABRIC DURING THIS PROCESS.  CONSULT FIRE PROTECTION ENGINEER 

             FOR TECHNICAL ADVICE AND RHPO ON HISTORIC PRESERVATION MATTERS BEFORE
              PERFORMING THIS WORK.

         4.   Where possible, the Contractor shall furnish and
              use baffles of metal or gypsum board to prevent the
              spraying of sparks, hot slag, etc., into
              surrounding combustible material.

    B.   Safety Measures:

         1.   The Contractor shall prevent the extension of
              sparks and particles of hot metal through open
              windows, doors, holes, and cracks in floors, walls,
              ceilings, roofs, and the like.

         2.   Where cylinders of gas are used in hot work, they
              shall be placed a safe distance from work. The
              Contractor shall check hoses and equipment for
              deterioration, malfunction, and leaks prior to
              starting operations. He shall provide suitable
              supports to prevent accidental overturning of
              cylinders. All cylinder control valves shall be
              shut off while the equipment is unattended.
              Acetylene cylinders shall be in an upright position
              while in use with the gas pressure regulator set at
              15 psi or less.

         3.   When hot work operations are completed or ended for
              the day, each location of the day's work shall be
              inspected by the supervisor representative of the
              Contractor not sooner than thirty (30) minutes
              after completion of operations to detect hidden or
              smoldering fires and to insure that proper
              housekeeping is maintained.

         4.   Where sprinkler protection exists, it shall be
              maintained without interruption while operations
              are being performed. If operations are done quite
              close to automatic sprinkler heads, gypsum board
              sheets or damp cloth guards may be used to shield
              the individual heads temporarily.

         5.   If any of the above safeguards are not employed, or
              are violated, the responsible Government supervisor
              may by verbal command followed by written notice, stop the work until
              compliance is obtained. Such stoppage shall not
              relieve the Contractor from performing his work
              within the contract period for the contract price.

                            END OF SECTION
 


hot work, fire safety, fire prevention,welding,cutting,soldering,brazing,open flames