Civil air defense engineering is mainly an important livelihood project to protect people's lives and property safety. Civil air defense equipment plays a very important role in engineering and has a significant impact on the normal operation of the project. In order to better ensure the construction quality of civil air defense engineering and fully utilize its protective functions, it is necessary to carry out quality testing of civil air defense engineering protective equipment. The quality assurance of civil air defense engineering equipment plays an indispensable role in the normal development of engineering construction and the full play of engineering functions In civil defense engineering, protective equipment is a very important component, and together with the civil defense engineering protection system, it has become the premise and foundation of civil defense engineering defense work, and their roles cannot be underestimated Protective equipment refers to various orifice protective equipment used to protect against the destructive effects of weapons in civil air defense engineering, including: civil air defense doors, reinforced concrete protective closed doors, suspended explosion-proof wave valves, electric control doors, anti electromagnetic pulse doors, and other protective equipment. Their installation positions are mainly distributed at the entrances and exits, channels, and other positions of civil air defense engineering The weakest position in civil air defense engineering is the position of the mouth, which is also the core position in weapon strikes and equipment protection. Qualified protective equipment can effectively withstand the hazards brought by nuclear, biological, and conventional weapons. Therefore, the protective equipment installed in this position will fully play its role and function, and even have a significant impact on the normal functioning of civil air defense engineering, fully demonstrating the positive significance of the existence of protective equipment

1. Quality issues with protective equipment products

During the production process, the dosage, material, and model of protective equipment do not comply with the design regulations, and the production and processing of equipment are not strictly carried out according to the drawings of civil air defense engineering protective equipment;

; The thickness of the paint film on the civil air defense door is too large due to uneven painting; The height and width of the door leaf exceed the allowable deviation in the specifications, and these issues will seriously affect the strength and protective performance of the protective equipment

2. Quality issues with the installation of protective equipment

During the on-site installation process of the product, the installation model of the protective equipment does not match the drawing design, such as the opening direction of the door does not match the standard of the drawing equipment;

; Excessive clearance between door leaves and door frames of civil air defense doors; The verticality of the door frame exceeds the detection standard; Problems such as excessive locking control force of door leaves