Alstom SF6 - Page 235

Equipment end of life
Management of SF
6
gas
P80--0002EN/02
4/6
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
SF
6
gas safety rules (contd.)
Used SF
6
For all interventions, it is necessary to respect the following instructions:
In every zone where the SF6 is implemented
D It is forbidden to smoke, eat, drink or store food.
D Ventilation must be sufficient.
D It is forbidden to use a fuel engine.
D Individual protection must be worn, following the table below.
Individual
protection
SF6 Technical
grade
Pure and used
SF6 gas
without toxic
products
Conforming
SF6 including
low levels of
toxic products .
Non--conforming SF6
including toxic pro-
ducts.
SF6 (post--arcing).
Studies of the com-
partment containing
polluted SF6.
Wearing of
Gloves
Wearing of Eye
Protection
Wearing of a
Simple Face
Mask
Wearing of a
Cartridge Filter
Face Mask
Wearing of a
Combination
NOTE: For the elimination, the individual protection is managed in HIW
D Furthermore, the personnel intervening on the equipment, must respect at
minimum the following instructions : after draining gas,
-- Remove the SF6 decomposition products immediately after the opening
of the equipment in order to avoid a chemical re--combination with water.
-- Ventilation must be sufficient.
-- Use an appropriate vacuum cleaner equipped with a dust filter and wipe
with a clean, dry cloth.
-- Avoid shaking the cloth
-- Block the SF6 decomposition products (i.e. molecular sieve, cloth soiled
with a 3% sodium hydroxide solution during 24 h) and destroy as dangerous
waste.
D Avoid contact with soiled parts or dust (Individual Protection)
Soiled individual protection, soiled dusters, soiled molecular sieve, polluted
gas, must be destroyed as dangerous industrial waste. Polluted gas will be
incinerated or recycled depending on its level of pollution.