The Ministry of Education recently issued a notice requiring the strengthening of the safety management of dangerous chemicals in universities. For toxic chemicals in hazardous chemicals, it is necessary to implement a double management system. The notice requires that for toxic chemicals in hazardous chemicals, reference must be made to the management requirements for highly toxic chemicals, and the implementation of the "five pairs" or "double custody, double collection, double use, double lock, double book" management system.
The Ministry of Education said that the recent incidents of poisoning on campus of Fudan University and the explosions in the laboratory of Nanjing University of Science and Technology once again sounded the alarm. It is understood that this is the first time that the Ministry of Education has stated its position on the Fudan University poisoning incident.
The notice requires all localities, departments, and schools to conduct focused investigations on key and weak links involving the management of hazardous chemicals in laboratories, and to establish targeted emergency response plans in a targeted manner. We will improve the management system for hazardous chemicals in the laboratory, and formulate and improve rules and regulations for the storage, use, and disposal of hazardous chemicals in the laboratory.
The Ministry of Education also requires the establishment of purchase management practices to keep all types of hazardous chemicals in a controlled state throughout the life cycle and establish a record and control system for the entire process from requisition, acquisition, use, recycling, and destruction.
I System description:
Heat Shrinkable Tape is designed to protect the weld joint of buried or exposed steel pipelines and insulated pipeline. This sleeves are manufactured from high quality cross linked polyethylene material. Hot melt adhesive provides excellent adhesion with the surface of steel pipeline, PE coating. Meanwhile it forms a continuous and firm anti-corrosive system with the surface of the pipeline.
The Polyethylene Heat shrinkable Tape needs no primer nor patch closure and reduces application time and labour costs.
â…¡ Structure
The specification of the tape consists of three layers,
Adhesive: butyl rubber based hot melt adhesive
Film backing: Radiation crosslinked polyethylene
Interleaf:Antiadhesive Film Treated with Silicone
â…¢ Features
After heating, formed corrosion protection seal
Strong backing provides outstanding waterproofing effect
High chemical resistance. resists impact, abrasion and ultraviolet light.
Excellent resistance against cathodic disbondment, dielectric breakdown.
Simple Application
â…£ Physical Properties
· Product Data Sheet Total Thickness:40mil, 50 mil,60 mil ,65 mils.
· Width:50,100,150,300,400,500,800 mm
· Length: 10 m
· Tensile Strength:35 N/cm
· Elongation:400%
· Adhesion Strength to pipe:30 N/cm
· Application temperature: -10 -60 ℃
· Temperature resistance:-50 ℃ - 80℃
· Shelf Life: 12 months
â…¤ Application
No Special skills, equipments, patch closure nor primer are needed. Its superior flexibility provides easy and reliable application for irregular configurations of fittings, bends and elbows and small diameter of straight pipes
Wrap spirally the tape over foreign matters-free and preheated surface, beginning at least 25~50mm (1~2 ) onto pipe coating. Wrap the tape with enough tension to obtain conformability and with minimum 50% of overlapping, while removing the release liner. Warm the end part of the tape and press down firmly. Using a torch, start at the edge of the tape and heat circumferentially around the coated pipe.
Finish off by heating over the entire tape vertically to ensure a uniform adhesion and by using a roller or gloved hands to remove wrinkle and air.
VI. Technical Datas
Heat Shrinkable Tape
Heat Shrinkable Tape, Shrink Wrap Tape, Heat Applied Tape
Jining Xunda Pipe Coating Materials Co.,Ltd , http://www.pipe-wrap.com