Datem Neptune 5000, Техническое руководство

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Technical Manual
34
Pod Refitting
Refitting the pod is simply the reverse process of removal, but special care should be
taken with ensuring that the threads on the clamp are in good condition, and that
anti-seize grease is applied to the threads of the clamp to avoid galling.
Pod Top-Cap Removal
To remove the top-cap assembly:
1. Firstly ensure the power is removed from the system, and
appropriate action is taken to prevent accidental energisation,
2. Remove all the cables from the pod’s connectors, and fit dummy
connectors, caps or other appropriate cover to the connectors,
3. Remove the M6 cap bolts from around the top-cap,
4. Fit two of the M6x35 cap bolts to the jacking holes, and
systematically turn them, jacking the entire top-cap out of the
vessel,
5. Due to the weight of the top-cap, appropriate lifting apparatus
should be used to carefully lift the top-cap until there is a gap of
approximately 100mm between the cap and the vessel,
6. Place lifting blocks between the top-cap and vessel in case of
lifting apparatus failure, leaving sufficient space for access by
hand,
7. Disconnect all the in-line cable connectors that attach the top-cap
to the internal equipment,
8. Slowly remove the cap, ensuring that no cables have snagged,
and place upside down on a suitable Topside to prevent connector
damage,
9. If the top-cap is removed with the pod outside, place an
appropriate blanking plate over the open vessel to keep any
water out. It should be noted that the pod should not be left like
this outside for very long due to the high risk of moisture ingress.
Pod Top-Cap Refitting
Refitting the top-cap is simply the reverse process of removal, but special care
should be taken with ensuring the o-rings are in good condition and lightly
lubricated with silicone grease.
Pod Lower Cap Removal
It is not necessary to remove the lower cap of the pod for the majority of work
undertaken. It is however necessary if the transformer requires replacement.
Disassembly should only be carried out in a dry workshop environment. Refer
to section 6.3.1 Pod Removal in order to get the pod removed to the working
environment. The following procedure should be followed to remove the lower