Medical pipeline system
Cleaning and Resistance is Very Important in Medical Copper Pipe Installations.
Ideal for the construction of medical gas distribution. Medical Copper Tubes are manufactured according to the requirements of EN 13348 standard.
Medical gas copper pipe end points come closed with plastic caps (plugs) to prevent entry of material during storage or transportation.
Design and Installation Data:
Non-Flammable Medical Gas Pipe Systems
Safety standards for oxygen and other positive pressure medical gases require the use of copper pipes in accordance with EN 13348 in hospital installations. Special cleaning requirements are sought for oxygen under pressure, that some organic oils (residues of lubricating oil used during production) may cause spontaneous combustion and for the safety of patients receiving medical gases.
The copper pipe for medical gas lines is delivered by the manufacturers in a properly cleaned, sealed or blocked manner. Care should be taken to prevent system contamination when caps or plugs are removed and the tube is inserted. The installer must satisfy himself and the inspection department that the cleaning requirements of the code have been fulfilled.
Installation and Testing of Medical Gas Piping Systems
1- All pipes, valves, fittings and other components for use in all non-flammable medical gas systems must be thoroughly cleaned by the manufacturer to remove oil, grease and other easily oxidizable materials as prepared for oxygen service. Pay special attention to storage and transport. Such materials must be sealed or blocked before final assembly to prevent re-contamination. Immediately before final assembly, the material should be inspected internally for contamination.
2- All soldered connections in the pipes shall be made using ANSI / AWS A5.8 brazing filler metals, which are connected with the soldered base metals and comply with the Specification of Brazing Filler Metal.
3- Copper-copper connections shall be made by using copper-phosphor welding wire (BCuP series).
4- Similar metals such as copper and brass should be joined using a suitable welding wire with copper phosphorous (BCuP series) or silver (BAg series) solder filler metal. (NOTE: Ensure proper ventilation. Some BAg series filler metals contain cadmium, which can produce toxic fumes when heated during soldering.)
5- During brazing, the system is continuously cleaned with oil-free dry nitrogen to prevent scale build-up in the pipe. The cleaning must be maintained until the connection has cooled to the touch.
6- The outside of all pipes, joints and fittings must be cleaned with hot water after installation to remove excess flux and ensure a clear visual inspection of the soldered connections.
7. Visual inspection of each soldered joint shall be carried out to ensure that the alloy flows completely around the joint at the tube connection interface. Where flux is used, ensure that the solidified flux sediment does not form a temporary seal that can hold the test pressure.
8- Threaded connections in piping should be made with polytetrafluoroethylene (eg Teflon®) tape or other thread sealing materials suitable for oxygen service. Sealants shall only be applied to male threads.