8
4.5
Storage conditions
Ensure that the material is suitably
packaged for the requirements of
the planned storage period.
Preserve the equipment in its
original factory packaging.
Avoid leaving the material where it
is likely to be subjected to large,
sudden temperature changes.
Ensure that there are no corrosive
vapours present, for example
sulphur dioxide (SO
2
).
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Contact AREVA for any
derogations to these criteria
The area chosen for storage must
be capable of protecting the
products against possible damage
due to deterioration agents, such as:
- Water
- Water vapour
- Saline atmosphere
- All types of pollution
- Micro organisms.
+50° C
- 25° C
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4.6
Intervention levels
D e s c r i p t i o n
Levels
Operations carried out by the Customer
1
Operations requiring specific training, carried out by an approved third party
2
Work to be carried out exclusively by AREVA
3
4.7
Specific recommendations for storage durations of less than 6 months
. Packaged under a plastic covering
1 2
3
Periodically carry out an inspection of the packaging
X X X
When unpacking, check the operation of the switchgear by carrying out several operations
*
-
X X
4.8
Specific recommendations for storage durations of between 6 and 12 months
. Protected by a heat-welded sheet, with bags of desiccant
1 2
3
Periodically carry out an inspection of the packaging (check that, among other things, there are no holes)
X X X
When unpacking:
- Check the operation of the switchgear by carrying out several operations
*
-
X X
- Test the min. threshold level (AC, 85% rated Un; DC, 70% of Un ) for the electrical operation of the coils
-
X X
4.9
Specific recommendations for storage durations of between 12 and 24 months
. Protected by a heat-welded sheet, with a method of replacing the bags of desiccant
1 2
3
Periodically carry out an inspection of the packaging (check that, among other things, there are no holes)
X X X
Periodically replace the bags of desiccant
X X X
When unpacking: - carry out light maintenance work
-
-
X
- Check the mechanical operation of the switchgear by carrying out several operations
*
-
-
X
- Test the min. threshold level (AC, 85% rated Un; DC, 70% of Un ) for the electrical operation of the coils
-
-
X
*
The pressure of any SF6 circuit
breaker having travelled by air
must be restored to its rated value
before any mechanical operation test.