Common problems and preventive measures of safety

The starting point of Tongji Bridge is the intersection of Jiangbei Avenue and Denglong Avenue. It extends southward along the current Jiangbei East Road and crosses Yujiang River, with a total length of 1807.5m. The main bridge spans the Yujiang River with a section width of 350m. The main bridge is designed as a self anchored suspension bridge with a steel box girder. The bridge axis is roughly north-south, and is divided from north to South: the North approach bridge is 417m long, which is a prestressed concrete continuous box girder bridge, with a total of 3 connections; The main bridge is 660 meters long and is a self anchored suspension bridge (Note: the anchor span is a prestressed concrete structure); Nanhu bridge, with a total length of 400 meters, is a prestressed concrete continuous beam bridge with unequal spans and varying heights; The south approach bridge, with a total length of 330 meters, is a prestressed concrete continuous beam bridge

there is no system of safety production management objectives (casualty control, safety standards, civilized construction), there is no clear safety production assessment index in the project contract, and there is no decomposition of safety objectives

2.1.1

preventive measures

the project department formulates the annual and medium and long-term management objectives of safety production of the project department according to the overall development objectives of the project department on February 25

safety management objectives should include production safety accident control indicators, safety production hidden danger management objectives, safety production and civilized construction management objectives. The safety management objectives shall be broken down to all management levels and relevant functional departments and positions, and shall be assessed regularly. All management levels and relevant functional departments and positions of the project department shall allocate corresponding resources according to the decomposed safety management objectives, and shall be effectively managed

the safety management indicators of the project department should include:

(1) self designed table control indicators for safety production casualty accidents: eliminate death, avoid serious injury, and control indicators for minor injury accidents

(2) safety compliance goals: according to the characteristics of the project, formulate specific goals and implementation plans for safety compliance by parts

(3) civilized construction objectives: formulate specific objectives of civilized construction according to the requirements of operating conditions

according to the safety objectives and safety system requirements of the project department, the safety production is divided into people according to professional management, and a safety production decomposition system is established. According to the inspection and assessment system, The safety production system and the implementation of objectives of personnel at all levels of the project are regularly assessed level by level and recorded accordingly (the process line of the device using the body sedimentation method should be quantified)

defects in the construction organization design and special scheme

(1) the safety technical measures are not formulated in the construction organization design, and the special safety construction scheme is not prepared for the divisional and subdivisional works with high risk

(2) the special scheme was not demonstrated by experts as required (more than a certain scale of dangerous divisional and subdivisional works), and the construction organization design and special construction scheme were not approved

(3) safety measures and special construction schemes are not targeted or lack design calculations and detailed drawings. The scheme is inconsistent with the actual situation and lacks operability, so it is unable to guide the on-site construction

(4) not organized and implemented according to the construction organization design and special construction scheme

(5) the documenter compiles the construction organization design and special construction scheme (unqualified). The approval procedures are incomplete

2.2.1

preventive measures

before construction, the project department shall prepare the construction organization design and formulate safety measures according to the project characteristics and construction technology

for divisional and subdivisional works with high risk, a special safety construction scheme shall be prepared according to the regulations. The special construction scheme shall be targeted, and the design technology shall be carried out according to the relevant regulations. For divisional and subdivisional works with greater risk exceeding a certain scale, the project department shall organize experts to demonstrate the special scheme

the construction organization design and special safety construction scheme shall be reviewed by relevant departments and approved by the technical director of the project department and the project director of the supervision unit

the project department shall strictly implement the relevant requirements in the safety management measures for divisional and subdivisional works with high risks, and pay attention to the preparation and implementation of the scheme

common problems of safety technical disclosure

(1) no written safety technical disclosure

(2) no safety sub divisional and sub divisional disclosure, the disclosure content is incomplete or not targeted. The disclosure has no detailed drawing and operability, so it cannot guide the construction

(3) there is no safety technical disclosure for special parts and special processes (processes)

(4) the disclosure did not fulfill the signing procedures

2.3.1

preventive measures

Article 27 of the regulations on the administration of safe production of construction projects: before the construction of the construction project, the technical personnel in charge of project management of the project department shall make a detailed description of the technical requirements related to safe construction to the construction teams and operators, and both parties shall sign for confirmation

the project department shall carry out safety technical disclosure at different levels according to the construction organization design, the preparation of special safety construction plans (measures) and the setting of approval authority, and the preparation personnel shall participate in the safety technical disclosure, acceptance and inspection

the person in charge of construction shall make written safety technical disclosure to relevant management personnel and construction workers. The safety technical disclosure shall be signed and confirmed by the Discloser, the discloser and the transferred safety officer. The safety technical disclosure shall be carried out according to the construction process, construction position and construction building number, and the targeted disclosure shall be carried out in combination with the conditions and characteristics of the construction site

safety technical disclosure is a legal management procedure, which must be carried out before construction. The technical director of the project shall make a detailed disclosure of the technical requirements and precautions related to safe construction to the operation team and operators, and adjust the disclosure content in time with the changes of process and operation conditions. The technical director of the project shall make a disclosure, and the members of the operation team shall accept the disclosure, and the safety officer shall participate in the supervision of the disclosure process

common problems in safety inspection

(1) the system of safety inspection (regular, special, seasonal, etc.) has not been implemented. Safety inspection is a mere formality

(2) there is no record of (regular, special, seasonal) safety inspection, and the rectification of hidden dangers of accidents does not meet the requirements of fixed person, fixed time and fixed measures

(3) the items listed in the rectification notice of major accident hidden dangers were not rectified and rechecked on schedule and in accordance with the terms

(4) the safety inspection data is not closed, and there is no review and improvement

2.4.1

preventive measures

Article 21 of the regulations on the administration of work safety in construction projects: the main person in charge of the project department is fully responsible for the work safety of the unit according to law. The project department shall establish and improve the safety production system and safety production education and training system, formulate safety production rules and regulations and operating procedures, ensure the investment of funds required by the safety production regulations of the unit, carry out regular and special safety inspections on the construction projects undertaken, and make safety inspection records

the safety inspection and improvement management of the project department shall include the content, form, type, standard, method, frequency, rectification, review, safety production management evaluation and continuous improvement of safety inspection

the safety inspection of the project department shall be equipped with necessary inspection and testing instruments. The existing problems and hidden dangers shall be rectified by designated personnel, time and measures, and shall be followed up and rechecked until the rectification is completed

the project department shall establish a safety inspection system. The safety inspection shall be organized by the project leader, attended by special safety officers and relevant professionals, carried out regularly and filled in the inspection records

the hidden danger rectification notice shall be issued for the hidden danger found in the inspection, and the rectification shall be carried out by specifying the person, time and measures. After the rectification of major potential accidents, relevant departments shall organize reexamination

regular inspection: the project leader shall organize relevant management personnel to conduct joint inspection on the construction site every week; Daily inspection: the project safety officer will patrol the construction site every day; Professionals want to check the special safety inspection of construction machinery, temporary electricity, protective measures, fire-fighting facilities, etc. carried out by professionals; Seasonal inspection is to carry out safety inspection in combination with the construction characteristics in winter, rainy season and holidays

for the hidden dangers found in the inspection, the closed management of rectification should be carried out according to the principle of determining the person, the time, the total investment of 300million yuan, the measures and who checks who reviews