I. Purpose

Ensure that the restricted space permit system is effectively implemented to prevent safety accidents.

Second, the scope.

It is applicable to the activities that need to apply for hazardous operation license within the company.

Three. definition

Confined space refers to a limited space that is relatively isolated from the outside world, with limited import and export and poor natural ventilation, enough to accommodate one or more people to enter and engage in unconventional and discontinuous operations.

IV. Conditions for obtaining permission to enter a confined space

There are two situations for entering and leaving a confined space: one needs permission and the other doesn't.

1. Generally, an unauthorized confined space does not contain any dangerous substances, which may not have any impact on the safety of operators.

2. Conditions for applying for a restricted space permit:

Contains or may contain harmful gases; Containing substances that may bury the operators; The internal structure is easy to trap the entrant and lead to suffocation or loss; Contains other dangerous factors that endanger safety and health.

3. When working in a confined space that requires permission, a "confined space entry permit" must be obtained.

4. The confined space that needs to apply for the Restricted Space Entry Permit refers to the places that meet the conditions of confined space, such as cement silo, limestone silo, slag silo, gypsum silo, raw meal homogenizing silo, pulverized coal ash storage, clinker silo, pulverized coal silo, raw coal silo, oil storage tank, and bag-type dust collector that needs to be overhauled. Natural ventilation or forced ventilation must be carried out before entering the confined space. Go through the power outage procedures and confirm that the upstream and downstream equipment in the confined space has been listed.

5. There are some dangers when working in a confined space that requires permission: The main dangers of working in a confined space are:

The "bridge" formed between materials suddenly collapsed and was buried by materials; Fire or explosion; Asphyxia or carbon monoxide poisoning; Falling from a height; Inhale dust; Chemical burn of materials; Electric shock injury, especially in iron containers, insufficient lighting.

VI. Requirements for operators entering confined space:

1, the mental state is appropriate (such as no claustrophobia, acrophobia, etc.). );

2. Suitable physical conditions;

3. Have the skills and experience of this job.

Seven. Precautions before operation

1. Before entering the confined space for operation, the operator must carefully analyze the operation hazards, fill in the operation hazards analysis form, and apply for the "Restricted Space Entry Permit"; 2. The "Permit to Enter the Confined Space" is valid only after it is signed by the department manager and the safety production department of the company; 3. The "Permit for Entry into Confined Space" must indicate all the dangers in the work process and the preventive measures to be taken; 4. The person in charge of confined space operations must select suitable personnel in strict accordance with the requirements of the above personnel; 5. Personnel working in confined space must receive the safety training of "Procedures for Entering Confined Space", and the trainees must sign to confirm that they have mastered the relevant safety requirements; 6. When entering the warehouse or warehouse for operation, the following conditions must be met: during the operation, at least one guardian should be arranged outside the confined space for continuous monitoring; The air quality entering the warehouse or warehouse meets the safety requirements and is continuously tested;

Use appropriate labor protection articles; There are sufficient rescue facilities on site; All used lifting equipment and access equipment (scaffolding, ladders, etc.). ) meet the safety requirements; Check the equipment used in the work process before use.

Only 36V and below safe voltage are allowed for lighting in the warehouse; Electrical equipment used in coal bunker or fuel bunker must meet relevant explosion-proof requirements; Good communication inside and outside the library.

VIII. Safety instructions in operation: 1. Determine the state of the warehouse from the top of the warehouse, so as to formulate a safe working mode; 2. The person in charge of the work must make a detailed warehousing plan; 3. When someone is working in the museum, the person in charge of external monitoring shall not leave his post or enter the museum; 4. Try to enter the library from the top of the library; 5. The staff in the warehouse must always stay on top of the materials; 6. Workers must wear safety ropes when entering the warehouse, and the safety ropes must be firm and have a certain tension; 7. When handing over the work, it is necessary to determine the length of time for substitution, so as not to cause excessive fatigue of the people inside; 8. Ensure that all tools and equipment used will not fall into the library; 9. Work in strict accordance with the requirements of the work permit; 10. After the operation is completed, the person in charge of the work must confirm that there is no one in the warehouse or warehouse, clean up the site and dismantle the safety measures.

Nine, homework ending

Ensure that the equipment is in normal condition; Clean up all tools on site; Clean up the scene; Ensure that there is no one in the warehouse or warehouse; Close the storage hole and door; Cancel security measures; Commissioning in groups (production and maintenance personnel together).