199 it is necessary for safety personnel of common safety hazards in the construction site.

Due to the existence of a large number of temporary facilities on the construction site, frequent movement of personnel and machinery, and the relatively harsh working environment, it is necessary to deal with various risk factors when managing safety. The following items 199 are common safety hazards in the construction site, which should be checked in advance to prevent accidents!

I. Safety management

1, the project has not gone through the safety supervision registration formalities; 2, not equipped with full-time security officer in accordance with the provisions; 3. The project manager and safety officer have no safety production knowledge assessment certificate; 4. Safety management objectives (casualty control indicators, safety standards and civilized construction objectives) have not been formulated; 5. Special construction schemes are not prepared separately for highly specialized projects; 6. The special plan (safety measures) is not targeted; 7. The special plan (safety measures) has not been implemented; No written safety technical disclosure. Safety technical disclosure is not targeted 10, safety technical disclosure fails to perform the signing procedures 1 1, there is no regular safety inspection record 12, hidden accidents are not rectified as required 13, safety education is not carried out as required 14, and safety team activities are not recorded. Special operations personnel work without a license 16, without site safety sign general plan 17, without setting safety signs according to site safety sign general plan 18, and without establishing industrial accident files.

Second, the civilized construction

1. The enclosure was not set as required on the construction site. 2. The construction site is not closed. No doorman and doorman system 3. There is no car washing platform at entrance 4. The road surface is polluted by sewage effluent. Materials are not neatly stacked as required. Flammable and explosive articles are not classified and stored. Untreated mud water and sewage are discharged into the urban pipe network 8. The project under construction is also used as No.9 dormitory. There is no obvious separation measure for living area, office area and construction area 10, and the canteen does not meet the hygiene requirements 1 1. Clean fuel is not used in canteen 12, toilet has no flushing facilities 13, toilet hygiene does not meet the requirements 14, fire-fighting equipment is not equipped on site 15, hot work approval procedures and hot work monitoring 16, no fire-fighting equipment layout 17.

Third, scaffolding

1, the scaffold height exceeds the specification, and there is no design calculation; 2. Scaffolding construction scheme is not approved; 3. The scaffold construction scheme is not specific, which can not guide the construction; 4. Scaffolding poles lack bases; 5. Scaffolding is short of sweeping poles; 7. The bracing is not set as required; 8. Scaffolding is not provided with a dense mesh safety net as required; 9. The construction layer is not provided with 1.2m high protective railing 10. There is no 18cm high fender on the construction floor 1 1, the scaffold erection has not gone through the acceptance formalities as required 12, the upright post in the scaffold on the construction floor is not closed to the building 13, the frame body has no access 14, and the unloading platform has no design calculation/kloc. The support system of floor-standing unloading platform is connected with scaffolding 17, the unloading platform is marked with 18, and the erection spacing of scaffolding bars does not meet the requirements.

Fourth, electricity for construction.

1, construction organization design without temporary electricity consumption 2, pertinence of construction organization design without temporary electricity consumption 3, no three-level distribution and two-level protection 4, power and lighting power supply at the main power supply are not separated 5, there is no total leakage protection device 6, cables and wires are laid everywhere 7, cables and wires are not fixed with insulating materials 8, there is no safe distance from external power lines, no protective measures are taken as required 9, and temporary electricity is supplied by special power transformers. TN-S protective neutral system 10 was not adopted, working zero line and protective zero line were not set separately from main power supply, safe voltage 12 was not selected as required, leakage protector 13 was not set in each single-phase circuit of lighting terminal, indoor and outdoor lighting lines were wired and plastic lines 14 were used, and electrical equipment was not used. No special leakage protector 15, improper selection and installation of box and low-voltage electrical appliances in the box 16, one switch in the distribution box connected to two or more electrical equipment 17, installation of fuse, improper selection of fuse 18, and no zero connection in the electrical box.

Five, tower crane

65438+ Foundation without concealed engineering acceptance procedures/KOOC-0/0, tower crane and overhead line less than safe distance without protective measures/KOOC-0//KOOC-0/,more than two tower cranes without anti-collision measures/KOOC-0/2, installation not accepted as required/KOOC-0/3, tower crane installation and disassembly not performing safety technical disclosure/KOOC-0.

Six, construction elevator

65438+ dismantlement team without qualification certificate 1 1, installation and dismantlement of external elevator without safety technical disclosure 12, failure to accept as required after installation 13, lack of quantitative acceptance content during acceptance 14, frame verticality exceeding specification requirements 15.

Seven, material hoist

1, unshaped docking device for hanging basket of material hoist 2, no superelevation limiting device for material hoist 3, no lower limit limiting device for overhead hoist 4, no overload limiter for overhead hoist 5, no buffer device for overhead hoist 6, connection of connecting rod with scaffold 7, material and connection method of connecting rod for connecting wall piece not meeting requirements 8, wire rope exceeding scrapping standard 9, wire rope clip not meeting requirements 10, Wire rope without cross protection 1 1, landing discharging platform without protective railing 12, landing discharging platform with loose and weak scaffolding 13, landing discharging platform with amorphous safety protection door 14, landing feeding port without safety protection shed 15. Hanging basket amorphous safety door 17, overhead hoist not using hanging cage 18, material hoist installation not accepted as required 19, material hoist installation and dismantling without construction scheme 20, frame foundation not meeting requirements 2 1, frame outer side not protected as required 22, winch not firmly fixed 23, pulley flange of traditional system.

Eight, foundation pit support

1, unsupported foundation construction scheme 2, and the construction scheme is poorly targeted, so it can't guide the construction. 3. There is no special supporting design for the foundation pit with a depth of more than 5m. 4. The supporting design scheme was not approved. 5. The design scheme of foundation pit with a depth of more than 5m has not been proved by experts. 6. There are no safety protection measures in foundation pit construction. 7. The supporting practices do not meet the requirements of the scheme. 8. No effective drainage measures were taken in foundation pit construction. 9. The distance between the mechanical equipment and the pit edge does not meet the requirements. 10, no personnel go up and down the special safe passage for foundation pit (1 1), the set safe passage does not meet the requirements (12), the deformation of foundation pit is not monitored as required (13), and the settlement of surrounding buildings is not observed as required (14)

Nine, template support

65438+ No safety protection measures for aerial work 1 1, no warning line for formwork removal, no guardian 12, no suspended formwork removal 13, no acceptance procedures for formwork works 14, and no safety technical disclosure for formwork support and removal 15.

X. Construction machinery and tools

1, small and medium-sized construction machinery is used in the open air, and there are 2 non-operational protective sheds. Small and medium-sized construction machinery transmission parts without protective cover 3. Small and medium-sized construction machinery adopts reverse switch 4. The power supply will not be cut off when the machine is not in use. Before use, according to article 6, it is not accepted. There is no safety device at the edge of woodworking machine 7. Mechanical protection tube damaged 8. The random mechanical safety device is damaged and does not work 9. Incomplete external protective baffle of welding machine 10, welding machine 1, no secondary protective cover 1 1, no leakage protection device on the primary side of welding machine 12, too small wire section on the primary side of welding machine 13, extension of power cord on the original hand-held power tool/kloc. Handheld electric tool shell is damaged, the distance between 65438 and acetylene bottle is less than 5m 17, the distance between oxygen and acetylene bottle is less than 10m, there is no isolation measure 18, acetylene bottle is not used upright 19, acetylene bottle is used without tempering device 20, oxygen is used in high temperature open air, and acetylene bottle is not exposed to sunlight 2 1. Underwater pump

Eleven, three treasures, four mouths and five realms

1. Workers on the construction site enter the construction site without wearing safety helmets. 2. Wearing a helmet does not meet the requirements. 3. The outside of the project under construction is not closed with dense mesh safety net. 4. The specifications and materials of the safety net do not meet the requirements. 5. The safety protection facilities are not standardized and instrumentalized. 6. The stairs are not equipped with safety protection facilities. 7. The elevator wellhead is not equipped with safety protection facilities. 8. The elevator shaft is not equipped with protection as required. The reserved hole is not equipped with safety protection 10, the hole is not equipped with protective shed 1 1, the protective shed fails to meet the requirements 12, the balcony is unprotected 13, and the house is unprotected.

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