Equipment end of life
Instructions on the handling of used SF
6
gas
and decomposition products
P81--0001EN/02
2/4
01--2011
© ALSTOM 2010. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be
relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is
provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is
strictly prohibited.
GRID
Draining the apparatus
Principle and
precautions
The following table gives the principle for draining apparatus containing
SF
6
gas, as well as the precautions to take:
Step Action
1 T urn the apparatus off then earth it.
2 Connect the vacuum pump tube to the apparatus connection,
with an adsorbent filter between the two.
3 Vacuum the SF
6
gas and, depending on the quantities, recover it
for re--use in accordance with the directives of norm IEC 60480.
4 Rinse the gas enclosure by filling it with nitrogen or dry air at
nominal pressure; then discharge this gas into the free air,
preferrably passing it through an adsorbent filter first.
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