Areva FLUOKIT M24+ - Checking HV connections (busbars, cables, etc.); Greasing of the contact surfaces

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17.4 Checking HV connections (busbars, cables, etc.)
F During the initial AREVA
maintenance operation the
torque levels of all HV
connector points must be
systematically verified.
F This test is certified by the
application of a small label –
stuck onto the ID plate.
F Then, a simple visual inspection
is required.
Specific case – switchboards assembled by AREVA
A label stuck onto the ID plate is
used to certify the torque of the
busbar (See § 17.4).
It is not necessary that the busbar
be checked again.
On the other hand, the other
connector points should still be
checked.
Specific case – request for systematic verification of torque levels (vibration, etc.)
A systematic check of all High Vol-
tage connections tightening points
may be requested by the customer.
Every 3 operations, it is there-
fore necessary to replace all
of the threaded fasteners .
17.5 Greasing of the contact surfaces
Intervention Duration Busbar Cables Load Break Switch Earthing switch
Normal 1 h 00 de−energized de−energized open closed
Possible 1 h 00 energized de−energized open closed
Apply the General Safety Instruc-
tions for Electrical Applications and
the particular rules for the network
concerned for locking out procedu-
res.
Greases: (See §2.6)
F Clean and apply a film of
grease to the plugging−in studs
on the earthing switch.
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F Clean and apply a film of
grease to the lower cups on the
PF−PFA, for contact with the
earthing switch.
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F Clean and apply a film of
grease to the contact plates on
the downstream earthing switch
for a PGC.
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