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Immingham Storage Company Limited – East Terminal
No.7 Switchroom - Basis of Design
P & I Design Ltd
DOCUMENT NO: SI451001_RPT
2 Reed Street, Thornaby, UK, TS17 7AF
ISSUE: C DATE: 10.08.12
Tel: + 44 (0)1642 617444
PAGE 5 OF 12
Fax: + 44 (0)1642 616447
www.pidesign.co.uk4
MODIFICATIONS COMPLETED
The initial priority was to provide the Aquabio effluent treatment plant with an LV supply.
This is now complete and has been achieved as follows. The diagram below shows the new
configuration.
1.
No.3 Pumphouse has been physically split into two sections. One end houses the air
compressors and receivers and the other end forms the new No.7 switchroom. The
compressor house end of the building still houses electrical switchgear, the removal
of which is the subject of further works detailed in this document.
2.
A new LV switchboard has been installed in No.7 switchroom
3.
The Aquabio MCC/Switchboard has been installed in No.7 switchroom
4.
Cable P30015 has been disconnected from LV board in No.3 pumphouse (fed from
fused switch EE), extended and now forms the incoming supply to the new LV
switchboard in No.7 switchroom.
5.
The LV switchboard, previously fed by cable P30015, has been re-supplied from a
400A MCCB at the new LV switchboard in No.7 switchroom.
6.
The Aquabio MCC/Switchboard has been supplied from a 630A MCCB at the new
LV switchboard in No.7 switchroom.
7.
Cable P30025 (fed from fused switch AC) has been retained feeding the existing
LV switchboard in No.7 switchroom.
The Aquabio effluent treatment facility has a connected load of 240kW (415A), which
after diversity has been applied for duty/standby pumps reduces to 213kW (370A). For the
purpose of this document a normal running current of 250A has been assumed based on
operating experience from the similar facility at ISCo West.
It is recognised that this is a short term solution. The transformer is of limited 415V
capacity and this solution may impose operational restrictions on the simultaneous use of
connected loads (refer to Load Schedule in section 7). This solution does however make
provision for incorporation into a more robust structure as funds permit and as outlined in
subsequent sections.
Notes
1.
It was originally planned to disconnect and retire cable P30025 feeding the LV
board in the northern end of No.3 pumphouse and re-supply the board from a 400A
MCCB at the LV switchboard. A decision was taken not to implement this in order
to retain some diversity of supply from No.3 switchroom.