1. Ventilation pipes which are not used for a long time and have bad maintenance, are tested before reopening because of large area corrosion, thinning thickness and weak strength.

2、检修或局部更换通风管道时，避免错用或不合理代用而降低管道的极限。

2, when overhaul or partial replacement of ventilation ducts, avoid misuse or unreasonable substitution and reduce the limit of pipelines.

3、通风管道系统应按规定装设泄压装置并保持其灵敏好用。

3, ventilation piping system should install pressure relief devices according to regulations and keep them sensitive and easy to use.

4、通风管道要由有资格的设计单位进行设计并符合设计规范的规定。

4, ventilation pipes should be designed by qualified design units and meet the requirements of design specifications.

5、采取有效措施防止大气及介质对通风管道的腐蚀。

5, take effective measures to prevent corrosion of air and medium to ventilation ducts.

6、通风管道安装工程投用前应进行役前检查和验收，管系结构、材料、焊接、热处理、压力试验等关键环节要符合规定要求。

6. Before the installation of the ventilation pipe installation project, before service, the inspection and acceptance should be carried out. The key links, such as pipe structure, material, welding, heat treatment and pressure test, should meet the requirements.

7、运行操作要严格执行操作规程，控制工艺指标，杜绝超温、超压运行。

7, the operation must strictly implement the operation procedures, control the process indicators, and eliminate the over temperature and overpressure operation.