How many hours is the validity period of the second-level hot work permit?

How many hours is the validity period of the second-level hot work permit, as shown below:

Three-level hot work applicants should be put forward three days ago, and the longest period after approval is seven days. After the expiration of the validity period, the applicant should re-apply for a permit, otherwise it is unlicensed hot work.

The validity period of the hot work permit is determined according to the hot work grade. The validity period of the special hot work permit and the first-class hot work permit shall not exceed 1 day (24 hours); The second-level hot work permit can be valid for 6 days (144h). This time should be calculated from the time when the fire does not exceed 30 minutes after the fire risk analysis.

Extended data

All hot work carried out in the no-fire area must apply for a "hot work permit". The permit for hot work shall clearly indicate the grade of hot work, the validity period of hot work, the applicant, the detailed location of hot work, the work content, the means of hot work, the safety and fire prevention measures, the sampling time, the sampling location, the analysis results, the starting time of each hot work, and the signatures and opinions of the responsible persons and approvers at all levels.

For the first-class hot work, the project leader shall organize the preparation of the fire safety technical scheme, fill in the hot work application form, and report it to the enterprise safety management department for approval before hot work can be started.

For second-level hot work, the project responsible engineer shall organize the formulation of fire safety technical measures, fill in the hot work application form, and report it to the project safety management department and the project leader for approval before hot work can be carried out.

For the third-level hot work, the team shall fill in the hot work application form, and the hot work can only be started after it is reviewed and approved by the project responsible engineer and the project safety management department.

Legal basis:

Circular of the State Administration of Work Safety on Electric Welding Hot Work Accidents in Recent Years Article 2 Failing to implement the hot work system and take protective measures and operating illegally.

Safety code for special operations of chemical production devices

5. 1. 1 Hot work outside the fixed hot work area is generally divided into three levels: second-class hot work, first-class hot work and special hot work. In case of holidays or other special circumstances, hot work should be upgraded and managed. Note: Enterprises should designate fixed hot work areas and no-fire areas.

5. 1.2 secondary hot work: hot work other than special hot work and primary hot work. Where all production devices or systems are shut down, after cleaning, replacement and analysis are qualified, and safety isolation measures are taken, hot work management can be carried out according to the fire and explosion hazard level and approved by the safety management department of the unit.