Method for quickly detecting and evaluating pressure container after fire based on hardness and metallic phase

A pressure vessel and evaluation method technology, applied in the direction of testing material hardness, etc., can solve the problems of complicated operation and pressure vessel damage, and achieve the effect of rapid operation, rapid screening, and realization of safety assessment.
CN103743641AActive Publication Date: 2014-04-23HEFEI GENERAL MACHINERY RES INST +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HEFEI GENERAL MACHINERY RES INST
Publication Date
2014-04-23

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Abstract

The invention belongs to the field of safety evaluation of pressure containers and in particular relates to a method for quickly detecting and evaluating a pressure container after fire based on a hardness and a metallic phase. The method comprises the steps of judging a cooling manner of a burned pressure container in a fire process; arranging a plurality of detection points to perform field detection of hardness; acquiring a temperature critical value of same materials used on the burned pressure container; determining a highest fire tolerance temperature of the burned pressure container when the fire happens; comparing the highest fire tolerance temperature of the burned pressure container with the temperature critical value; performing the operation of repairing or scrapping the burned pressure container when the highest fire tolerance temperature is higher than the temperature critical value, performing metallographic examination, macrographic examination and nondestructive examination on the burned pressure container when the highest fire tolerance temperature is lower than the temperature critical value, and judging whether the burned pressure container is qualified and is free of evaluation. The method is simple and accurate to operate, and capable of performing quick detection and evaluation about the usage of the pressure container after the fire.
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Description

technical field

[0001] The invention belongs to the field of safety evaluation of pressure vessels, in particular to a rapid detection and evaluation method for pressure vessels after a fire based on hardness and metallography. Background technique

[0002] Pressure vessels are widely used in my country's important national economic pillar fields, and the number of pressure vessels is increasing year by year. In recent years, the number of pressure vessel fire accidents in my country's petrochemical enterprises has increased. If a fire occurs in a densely packed and intricate process plant area and some large hazardous chemical storage facilities, such as large crude oil storage tanks, large ethylene spherical tanks, natural gas spherical tanks, liquefied gas balloon tanks, etc., very serious tank damage may occur. Deformation, inclination, leakage and even explosion accidents often cause a large number of casualties, major economic losses or serious environmental pollution...

Claims

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