Safety requirements and measures in the constructi

2022-09-21
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Safety requirements and measures during the construction of brick chimneys

safety requirements and measures for the construction of brick chimneys:

(1) safety must be erected when brick chimneys are built. If materials are loaded outside the chimney, they should be set inside and outside. If conditions permit, safety should be hung on the operating platform and then rise. If there is safety under the chimney, the width (opening range) should not be less than 1/4 of the brick height, and not less than 6m

(2) if it is impossible to completely close the chimney safely, safety belts should be hung when the masonry height is more than 3m. The safety belt should be firmly hung above the operation platform without interfering with the operation. The safety belt can only be used after being checked and identified by the quality safety department before use. When the operation position is transferred or the scaffold and working platform are lifted and lowered, the operator must re buckle the safety belt and check whether the buckle is secure

(3) it is forbidden to stand or squat on the chimney wall for operation. If the wall thickness exceeds 2 bricks (62cm) and it is necessary to stand on the wall for operation, the safety belt must be fastened

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(4) tools, wood, broken bricks and other materials shall not fall from high altitude during work, and bricks shall be cut inward

(5) fences should be set within the chimney construction range to prevent irrelevant personnel from entering, and the radius of the range should be 10m. Protective baffle shall be erected near the derrick material hoist

guardrails shall be set around the working platform above and at the exit of the derrick hoist

(6) when the scaffold in the chimney is used (that is, the chimney wall body built is used as the main beam supporting the workbench frame). The supporting length of each end of the main beam inserted into the wall body shall not be less than 12cm. If the wood brace is used as the main beam, the lifting machine should be carefully selected and hoisted to the preset place, which is hard, free of scabs, cracks and mold

(7) when the chimney is built to more than 15m, a temporary lightning rod should be set to rise with the height of the chimney, and the tip of the needle should be more than 2m higher than the masonry surface

(8) the position of the winch for vertical transportation requires that all the chimney and derrick material hoists can be seen directly, without visual obstacles, and the elevation angle should not be too large to prevent the driver from looking up

(9) if there is no special person on the working platform to command the lifting and lowering of the derrick material hoist, an automatic limit or travel switch must be added to prevent the cage from rising unrestricted, causing accidents

(10) when lifting materials outside the barrel with a pull rod, the material receiving personnel shall not stand on the masonry to receive materials, but must stand on the platform and hook close to them with a hook, and then take materials after they are stable

(11) the personnel commanding the lifting and lowering of derrick material hoist must use the same signal with the driver (flag or interphone can be used)

(12) all personnel are not allowed to go up and down the ladder that has just been buried and the mortar joint has not yet solidified, so as to prevent the iron bar from being loosened and pulled out, resulting in falling from high places

(13) if the ladder is used for operators to go up and down, guardrails must be added. A temporary simple rest platform is set every 15m high for a short rest in the middle to avoid excessive fatigue

(the contents of 14 carbon fiber and polypropylene fiber are 45% and 55% respectively) the construction of scaffold outside the steel pipe to improve the yield of alloy should be carried out in accordance with the safety requirements of this item

(15) after the installation of all vertical transportation equipment, it should be overloaded by 40% for test run, and can be officially put into use only after passing the inspection and identification

(16) the operation of tower cranes, external elevators, derrick material hoists, hoists and other machines and tools used in chimney construction shall comply with the safety requirements of this item

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