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Method of Statement for Fire Fighting Works (Part-2)

METHOD OF STATEMENT FOR FIRE FIGHTING WORKS (PART-2)

(5) VERTICAL RISERS

  • Vertical risers shall be parallel to walls and column lines and shall be straight and in plumb. Risers passing from floor to floor shall be supported at each floor by MS angle with clamp as per specification of pipe support. * The space in the floor cut outs around the pipes work may be closed using cement concrete (1:2:4 mix) or steel sheet, from the fire safety considerations, taking care to see that a small annular space is left around the pipes to prevent transmission of vibration to the structure. * Riser shall have suitable supports at the lowest point.

(6) SPRINKLER HEADS & ACCESSORIES

  • Installation of sprinkler heads will be done after pipe work flushing is completed. * Apply the PTFE tape only to the male portion of the sprinkler and install the upright sprinkler head using the wrench provided by the manufacturer, and in such a way that the arms are parallel to the branch pipe. Maintain a clearance of 1” between the deflector of upright sprinkler and ceiling. Ensure that sprinkler heads have the correct finish and temperature rating. * For fixing sprinkler heads, 15 mm. dia. M.S. Socket is to be screwed to range pipes at the locations as’ per drawings. Dead plug shall be fixed in the socket. * If sprinkler head is to be provided away from range pipe, M.S. Pipe nipple of suitable size be used to extend the sprinkler head and socket is welded at desired location. * During occupation of the building, sprinkler heads shall be provided in place of dead plugs. Teflon tape shall be used on threaded portion.

(7) FIRE HOSE REEL / FIRE HOSE CABINETS

  • Check cabinets are approved size and dimension. Inspect for signs of damage.

  • Locate exact location of these Cabinets as per approved shop drawings and with careful measure of elevation and plumb.

  • Fix cabinet using recommended anchor and bolts. Proceed with installation of accessories, lock shield valve, landing valves, etc. taking in consideration of approval for these devices. * Prior to the installation Foreman will read, understand and strictly follow the manufacturer’s instructions. * Examine the location of the hose reel cabinets and ensure that opening is sufficient for fixing all equipment and the mounting height of the hose valve and hose racks is as per the approved shop drawings and to the requirements. Hose reel, hose valves and fire extinguishers are of approved type and have the correct rating. * The cabinet (without the equipment) will be installed where applicable. Branches to the hose rack (reel) / hose valve will be installed on site to ensure actual entry point to the cabinet. Location of Pipe sleeves shall be as per approved drawings. * Hose reel & valve will be installed as per the manufacturer’s instructions at the correct mounting height. * Keep fire extinguisher inside the cabinet along with the hose rack. Ensure that the top of the wall mounted extinguisher do not exceed from the levels as per approved drawing and specification.

(8) DRAIN PIPING OF THE SYSTEM:

  • Fittings will be of the eccentric pattern to ensure proper drainage and the elimination of air pockets wherever necessary. * In Sprinkler Network at far end Drain Pipe shall be provided on last Sprinkler to remove Air from Sprinkler Network.

(9) SLEEVES

  • The branch lines will be hanged to the proper level and will be connected to the cross main. Where piping is embedded or passing through masonry or concrete, sleeves will be provided as per specification mostly of MS or GI material. * Pipe sleeves of diameter larger than the pipe by least 50 mm shall be provided wherever pipes pass through walls and the annular spaces shall be filled with felt and finished with retaining rings.

(10) SEALANT

  • After the removal of the concrete forms and installation of the pipeline, the annular space between the sleeve and the pipe shall be filled with caulking material leaving enough space at both ends of the sleeve for sealing.

(11) UNDER GROUND PIPE

  • Where mild steel pipes are to be buried under ground the same shall be treated anti corrosion treatment. The top of the pipes shall be not less than 100 cm below the ground level. * Where this is not practicable, permission of the Engineer-in-charge shall be obtained for burying the pipes at lesser depth. * After the pipes have been laid, the trench shall be refilled with the excavated soil and rammed and any extra soil shall be removed from the site of work by the contractor. * Underground pipe shall be laid at least 1 meter away from the face of the building preferably along the roads and foot paths. * As far as possible lying of pipes under road, pavement and large open spaces shall be avoided. * To facilitate detection of leak and isolation of defective portion of pipe, valves shall be provided in underground pipe at suitable locations. * A…