Laserfiche WebLink
1. Cylinders <br />a) Chlorine cylinders are to have a single chlorine style Ceodeux D174 valve which <br />is equipped with a fctsihle metal plug -type reliefdevice. This is a must comply <br />safety requirement. <br />2. Ton Container Valves <br />a) Chlorine ton containers are to have two identical chlorite style CeodeuxD174 <br />valves near the cernter of one head. This is a must comply safety requirement. <br />When vertically aligned, the valve in the upper position is rued for gas <br />withdrawal, and the Lower one for liquid withdrawal. The standard ton container <br />valve is identical to the cylinder valve except that it has no f isible metal type <br />relief device, and the valve seat diameter may be larger than on most cylinder <br />valves. There are tow sizes of ton container valves: 314 inch NGT and 1 inch <br />NGT. <br />3. Valve Outlet Threads <br />a) Outlet threads on cylinder and ton containers are special straight tln-eads <br />(1, 030" - 14NGO-RH-EX7) which conform to connection number CGA 820 and <br />B20C which utilize a yoke -type connection. These threads are to accommodate <br />the outlet cap only and are not to be rued for chlorine hose connections. <br />E. PRESSURE RELIEF DEVICES <br />1. Cylinders <br />a) The relief device of chlorine cylinders is a fusible metal plug in the cylinder <br />valve located below the valve seat. The fusible metal is cast into an 'Alloy "B"or <br />Alloy "A"holder which is screwed into a tapped hole in the valve body. The <br />fusible plugs are designed to melt between 158 degrees F and 165 degrees F. <br />2. Ton Containers <br />a) Tor container valves contain no fusible plugs. The container itself is equipped <br />with six threaded frisible plugs, three in each hear, spaced approximately 120' <br />apart. <br />3. Ton Container and Cylinder Inspection, Cleaning, and Reconditioning <br />a) In addition to the required period retest, it is recommended that each ton <br />container and cylinder be internally and externally inspected prior to each <br />filling. This includes all appurtenances, such as valves and fusible plugs. <br />Criteria for such inspection is outlined in "Cylinder and Ton container <br />Procedure for Chlorine Packaging, " Chlorine Institute Pamphlet 17, Sections 3, <br />4, and 5. <br />F. PERIODIC RETESTING AND RE -INSPECTION <br />1. Cylinder and Ton Containers to be Tested <br />rd <br />