天津站兼职mm-天津站兼职mm_首页

在巢湖酒店晚上怎么叫服务

Current location: home page > common problem >Regulations on operation and management of liquid nitrogen storage tank

Regulations on operation management of liquid nitrogen storage tank

Time: 2017-08-01 18:46 Source: Bander liquid nitrogen tank Author: admin Click: second
Regulations on operation management of liquid nitrogen storage tank

1. Purpose

This regulation is formulated to strengthen the use management of liquid nitrogen storage tank, achieve correct use and ensure safe production.

2. Scope of application

This regulation is applicable to workshops and departments involved in the management and use of liquid nitrogen storage tanks in * * pharmaceutical raw materials company.

3. Responsibilities

(1) the warehouse is the Department responsible for the daily management and maintenance of liquid nitrogen storage tanks, and must regularly inspect and maintain the liquid nitrogen storage tanks, and timely propose rectification and report to the production department for potential safety hazards

(2) the workshop involved in the use of liquid nitrogen must operate according to the operating procedures to ensure safe use. (3) the production department is the supervision department for the management, maintenance and use of liquid nitrogen storage tanks, and timely solves the problems of projection in the warehouse and workshop.

(4) logistics is responsible for external (Supplier) contact and coordination of liquid nitrogen storage tank

4. Operation

(1) for liquid filling, the warehouse should regularly check the inventory of liquid nitrogen. During the production period, when the stock in the warehouse is lower than the safety stock, the logistics procurement should be timely required to avoid the storage tank inner cylinder returning to normal temperature and causing excessive liquid loss during the use of liquid filling. After the arrival of liquid nitrogen, the supplier should assist in filling the tank of liquid nitrogen and verify the quantity.

(2) use: open the valve of liquid nitrogen to the vaporizer, supply liquid to the vaporizer, adjust the pressure regulating valve to the required pressure, and deliver nitrogen to the outside.

(3) pressurization: when the pressure of the liquid nitrogen storage tank is too low to meet the production needs, the self pressurization device of the storage tank can be used to pressurize. The operation steps are: slowly open the booster valve to make the liquid nitrogen enter the supercharger for vaporization. When the nitrogen consumption is large, the booster valve can be opened until the pressure required for production is reached.

(4) during storage and shutdown, due to the natural volatilized nitrogen remaining in the tank, the inner cylinder pressure will gradually increase. When the inner cylinder pressure reaches 0.8MPa, the vent valve should be properly opened to relieve pressure.

(5) the safety valve must be in normal working condition at any time.

5. Maintenance

(1) the shell of liquid nitrogen storage tank belongs to pressure vessel, and it is forbidden to knock and collide.

(2) frequently check whether the valve is in the correct opening and closing position, whether the measurement of pressure gauge and liquid level gauge is accurate and reliable, and whether the pipeline and valve have leakage and blockage.

(3) the supplier is required to inspect the pressure gauge and safety valve regularly according to the regulations. When the safety valve is in failure, the supplier shall be required to verify the safety valve immediately.

(4) when the storage tank is out of service, do not use up the liquid nitrogen safely, and ensure the pressure of 0.02MPa in the inner cylinder.

Related contents

shrink
  • Telephone consultation

  • 010-80204245
  • Wechat consulting