At line 39 added 1 line. |
+ |
Lines 42-43 were replaced by lines 43-47 |
- __Helium Dewar Transport:__ |
- Helium dewars are brought into the experimental area with the 1T crane. Only instructed people are allowed to use the crane. A short training is offered by the LDM mechanics personal. Only dewars with pre-installed transport straps are allowed for crane transportation. To extend the straps please use the proper extensions as shown in the picture below. |
+ __Helium Dewar Transport:__\\ |
+ Helium dewars are brought into the experimental area with the 1T crane. |
+ *Only instructed people are allowed to use the crane. (A short training is offered by the LDM mechanics personal.) |
+ *Only dewars with pre-installed transport straps are allowed for crane transportation. |
+ *To extend the straps please use the proper extensions as shown in the picture below. |
Line 56 was replaced by line 60 |
- *continue to lower the siphon into the transport dewar until you reach the bottom and lift it up by 10 cm (the people running the liquefier will love you) |
+ *continue to lower the siphon into the transport dewar until you reach the bottom. |
Lines 58-59 were replaced by lines 62-63 |
- and open it. The dewar is now pressurized to 0.2bar over pressure. |
- |
+ and open it. The dewar is now pressurized to 0.15 bar over pressure. |
+ *make sure not to empty the vessel completely, the people running the liquefier will love you. On the transfer line, normally there is a prolongation with a hole at 10 cm above the end. If not, you should lift the transfer line by 10 cm after inserting. |
Line 69 was replaced by lines 73-84 |
- |
+ !Returning Liquid Helium Dewars |
+ please return dewars to the dewar station as soon as possible after the transfer |
+ *connect the dewar to the rubber hose of the dewar station |
+ *open the manual valve to the recovery |
+ *open the manual pressure release that is connected to the recovery on the dewar |
+ *check the other manual pressure release. it MUST be closed |
+ *retighten the locking nut of the Helium extraction port |
+ *connect the level probe |
+ |
+ IMPORTANT: |
+ recheck that all valves are in the right state and the level is reading before you leave |
+ [afterfill.png] |
At line 70 added 1 line. |
+ In case you are unsure about certain procedures, please contact sample environment staff |