In principle, it is forbidden to use hot work in the open air in the above weather, and the management of hot work with blood deficiency should be upgraded.

In windy weather of level 5 and above, open-air hot work is prohibited in principle. Because hot work is really needed in production, it is necessary to upgrade the management of hot work.

Brief introduction of category 5 wind:

Level 5 wind, also known as breeze, refers to the wind speed of 8.0- 10.7 m/s. The waves in the sea are getting higher and higher, the peaks are frothy and occasionally splash. Small trees with leaves are swaying on the land, and there are small waves on the inland water.

Introduction of wind grade:

Beaufort scale is an international wind scale, which was drawn up by Francis Beaufort, an Englishman, in 1805, to indicate the intensity grade of wind. Wind scale, referred to as wind scale, is a kind of expression of wind strength (wind power), so it is also called "Beaufort Wind Scale". Initially, according to the influence of wind on ground objects or sea surface, it is divided into 0- 12 grade and *** 13 grade.

Dynamic spectrum:

4-8 gale can produce infrasound with strong amplitude and measurable direction. They have many short-period components of 5, 8, 10, 12, 15 min, and long-period components of 30-65 min, which are connected from short period to long period at regular intervals. The stronger the wind, the more obvious the connection.

Matters needing attention in the initial stage of hot work:

1, Introduction to Hot Work:

During hot work, welding and cutting operations should be carried out in the fire-forbidden area, and temporary operations that may produce flames, sparks and hot surfaces should be carried out in flammable and explosive places by using blowtorch, electric drill and grinding wheel. Flammable and explosive places where articles are produced and stored meet the fire hazard classification of Class A and Class B in GB 50016-2014.

2. Precautions:

(1) Before hot work, risk factors should be identified, risk assessment should be conducted, safety measures should be taken, and a safety work plan should be prepared if necessary.

(2) Hot work without hot work permit, safety measures or safety operation plan, on-site operator or guardian, and approval to change the safety operation plan is prohibited.

(3) During hot work, when combustible materials and equipment and tools that may affect or damage the unconditional removal are removed unconditionally, the operator must effectively isolate the hot work area from the external area, fire source and equipment to be protected with strict iron plates, asbestos tiles and fire nets, and prepare fire-fighting equipment and water sources at the site, and spray water to the site irregularly when necessary.