Handling leaks

Before connecting the pump sub-assembly into the system, set up the pump with hoses connected on the inlet and outlet and turn the pump on, feeding it water. Observe the action of the pump to get a feel for it and notice if there are any leaks. Such a test is limited because there will not be back pressure from the whole system (unless you provide for that), but this test will indicate any gross leaks. 

When our system was first set up, there was a leak at the pump outlet. It was not a major leak, but it was significant enough to have to be fixed. We decided to wait a few days however, after a few days the leak had stopped. We have observed this same phenomenon in several of our earlier systems. What may happen is that the pressure within the system forces the tape and or thread sealant to form a barrier and thus stops the leaking. There was 

Please note that if a system exposed to freezing temperatures, it must have an adequate amount of KOH in the line to act as an antifreeze or drain the line and pump so that it is liquid free. If the system will not be used in the winter and it is in an outdoor location, it should be drained and flushed. We drain and flush our systems on a seasonal basis. This allows us to clear out the system and make any needed repairs. 

An experimental system may need to be drained more than just seasonally. It s always wise to design systems to drain easily and efficiently. 

The valves in the feed system can be set up in a number of different ways. If a check valve is used to keep the KOH from reentering the tank, put a check valve between the pump and the pressure tank, right after the pump. Beside the check valve on the line to the pressure tank, place a 3-way valve. This valve will allow the fluid from the pump to proceed either to the pressure tank and electrolyzer or be drained from the pressure tank and 

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Wlien employees are handling leaking drums or eontainers or working in areas with obvious liquid eontamination [OSHA Referenee T20(li)(3)(iv)]... 

An MSDS lists the hazardous chemical contents of a product, describes its health and safety hazards, and gives methods for its safe use, storage, and disposal. The MSDS also includes information on fire and explosion hazards, reactivity, first aid, and procedures for handling leaks and spills. 

A sulfur dioxide container exposed to a fire should be removed from the area. If for any reason it cannot be removed, the container should be kept cool with a water spray until well after the fire is out. Fire fighting personnel should be equipped with protective clothing and respiratory equipment. For further information regarding handling leaks and emergencies, see the North American Emergency Response Guidebook [16]. 

Never attempt to repair or alter cylinders. This should be done only by the cylinder manufacturer. Only the supplier of the acetylene gas must perform valve repairs. If a cylinder is leaking, follow the recommendations in the section on Handling Leaks and Emergencies. 

Be sure that ail connections are gas-tight and remain so, and that the connected hose is in good condition and does not have any leaks. Regarding leak detection, see the section on Handling Leaks and Emergencies. Refer also to CGA SB-8 [6]. 

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