From 54d9fe5c5b2acb1cb96ebabe8bbdc454e166fb2a Mon Sep 17 00:00:00 2001
From: Jil FISCHBACH <jil.fischbach@uni.lu>
Date: Fri, 7 Feb 2020 14:43:04 +0100
Subject: [PATCH] creation howto card

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+---
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+permalink: /internal/p.5.2_replacement-gas-bottles_BTA/
+---
+# P5.2: CO2 Gas bottle replacement BTA 
+This section describes the procedure for replacement of gas bottles.  
+
+1.	Check when the bottle where exchanged for the last time on the “gas bottle exchange record sheet”.  
+
+* If the CO2 bottles have already been changed in the 48 h prior to the alarm, change the bottles and immediately contact the Facility Manager (LCSB-INF-01-A-01)  
+* If the last change was made more than 48h before, change the bottles and contact the duty call manager (see below)  
+
+2. Replace the empty bottles in room S130  
+
+<div align="center">
+<img src="img/../p.5.2_img-1.jpg">
+</div>  
+
+* Check the gas level on the manometer (5 on the picture). When empty, it displays 0 bar.  
+* Once the pair of bottles that need to be changed have been identified, close the network valve (3 on the picture)  
+* Close the bottles (1 on the picture)  
+* Open the purge valve (4 on the picture) to release the pressure remaining in the pipe connecting the bottles, then close back the purge valve  
+* Unscrew the tubing from the bottles by hand (2 on the picture)  
+* Move the empty bottles to the bottle rack, bring the new bottles and fasten the chains  
+* Connect the new bottles by screwing the tubing hand tight (2 on the picture)
+* Open the gas bottles (1 on the picture)  
+* Check for leaks at the connection between the bottles and the tubing  
+* Open the purge valve (4 on the picture) for 2 seconds to fill the tubing with gas and remove the air, then close it back  
+* Open the network valve (3 on the picture)  
+* Check for any leak after connecting the bottle using the leak detector spray, an example is shown on the picture below  
+
+<div align="center">
+<img src="img/../p.5.2_img-2.jpg" height="250">
+</div>
+
+4.	Fill up the “gas bottle exchange record sheet” (LCSB-INF-01-A-03) on the door inside the gas deposit room.
+A copy of this document is present in each gas deposit room.  
+
+<div align="center">
+<img src="img/../p.5.2_img-3.jpg">
+</div>  
+
+1.	Notify the Facility Manager, the LCSB duty call manager and their backup by email and fill the [Duty call report form](https://ulsurvey.uni.lu/index.php/936567?lang=en)
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