Five elements for safe use of liquid ammonia refrigeration equipment

Five elements for safe use of liquid ammonia refrigeration equipment

In recent years, liquid ammonia leakage accidents have occurred frequently, leading to many tragedies. In order to prevent similar accidents, the editor of okmarts.com today takes everyone to understand the five major elements that need attention in the use of liquid ammonia refrigeration equipment.

　　 Liquid ammonia, also known as anhydrous ammonia, is a colorless liquid with a strong pungent odor. As an important chemical raw material, ammonia is usually used to obtain liquid ammonia by pressurizing or cooling gaseous ammonia for the convenience of transportation and storage. Liquid ammonia is widely used in industry, is corrosive and easy to volatilize, so its chemical accident rate is very high. Once leaked, it can cause fire, explosion, and frostbite accidents.

　　The five essentials for the use of liquid ammonia refrigeration equipment:

　　 1. Strengthen the maintenance of equipment and facilities. Strengthen the maintenance of equipment and facilities such as liquid ammonia storage tanks, steel cylinders, pipelines, instruments, valves and safety devices, and implement regular inspections and repairs to eliminate diseased operation and meet the needs of safe production. Liquid ammonia storage tanks, steel cylinders and other pressure vessels, pressure pipelines, safety valves, pressure gauges, thermometers, etc., must be inspected by the quality supervision department before they can be put into operation. If it is determined to be scrapped, it must be resolutely discontinued; if it is classified as a monitoring operation, a monitoring operation management system must be developed to reduce operating pressure, shorten inspection time, strengthen inspection, inspection and monitoring, and strictly prevent accidents.

　　 2. Strict safety management in opening, stopping and production handover. Develop a complete and strict safety work system for opening, stopping and production handover, and strictly implement it. Before overhauling, especially before driving after long-term parking, three tasks should be done: one is to formulate a rigorous driving plan, to make careful arrangements and careful preparations for the driving work to avoid rushing driving; the second is to strengthen the pre-driving Safety education. Collect ideas through education, so that employees can immediately enter the working state, and at the same time, make employees further familiar with and master the process flow, operating procedures and driving plan of the position, and ensure the smooth driving. The third is to do a safety inspection before driving. Relevant personnel must be organized to inspect matters related to safe production, rectify hidden dangers or problems, and implement responsibilities, and implement a driving signature responsibility system to ensure driving safety.

　　 3. Strengthen the training of liquid ammonia safety management knowledge. Take liquid ammonia safety management knowledge training as the main content of daily and "three-level" safety education for enterprises. Through education and training, cadres and employees at all levels of the enterprise are familiar with the dangerous characteristics of liquid ammonia, and master the characteristics of safe production of liquid ammonia and knowledge of prevention, control and rescue. Operators of liquid ammonia refrigeration must be certified to work in accordance with relevant national regulations.

　　4. Establish and improve the safety management system for the overhaul of equipment and facilities. Develop a strict safety management system for equipment and facility maintenance and a safety operation certificate system, and strengthen the safety management of maintenance operations such as gas, hot fire and equipment operations. Before major overhauls and overhaul operations, enterprises must formulate overhaul or overhaul work plans, strengthen safety management, and ensure operational safety.

　　 5. Be prepared for emergency rescue. Formulate a complete accident emergency rescue plan, set up an emergency rescue team, be equipped with emergency rescue equipment, and conduct regular accident emergency rescue drills. At the same time, each position in the use of liquid ammonia has formulated targeted emergency response plans and strengthened training to enable relevant personnel to be proficient in alarm, protection, evacuation, first aid, on-site plugging treatment and other operational essentials to ensure that they can quickly Effective disposal will reduce the accident loss to a minimum.