Form10/00
UK ABWR
Document ID
Document Number
Revision Number
:
:
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GA10-9101-0101-15006
ES-GD-B010
B
UK ABWR Generic Design Assessment
Generic PCSR Sub-chapter 15.6 : Panel and Raceway
Layout
Hitachi-GE Nuclear Energy, Ltd.
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Form01/03
UK ABWR
Page ii/ii
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Proprietary Information
This document contains proprietary information of Hitachi-GE Nuclear Energy, Ltd. (Hitachi-GE), its
suppliers and subcontractors.
This document and the information it contains shall not, in whole or in part,
be used for any purpose other than for the Generic Design Assessment (GDA) of Hitachi-GE’s UK ABWR.
This notice shall be included on any complete or partial reproduction of this document or the information it
contains.
Copyright
No part of this document may be reproduced in any form, without the prior written permission of
Hitachi-GE Nuclear Energy, Ltd.
Copyright (C) 2015 Hitachi-GE Nuclear Energy, Ltd.
All Rights Reserved.
GA91-9101-0101-15006 Rev. B
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Form05/01
Generic Pre-Construction Safety Report
UK ABWR
Revision B
Table of Contents
15.6.1 Requirements for Panels and Raceway Layout .......................................15.6-1
15.6.2 References ....................................................................................................15.6-1
15. Electrical Power Supplies
15.6 Panel and Raceway Layout: Table of Contents
Ver.0
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Form05/01
Generic Pre-Construction Safety Report
UK ABWR
Revision B
15.6.1
Requirements for Panels and Raceway Layout
The following key requirements / principles apply to electrical and C&I panels and cable raceway
design: Further details of requirements, separation distances, installation patterns and layout are
contained in [Ref-2].
Safety Class 1 electrical panels, circuits and raceways of trays and conduits are designed to be
physically and electrically separated from those of the other safety classes (Class 2/3) and nonsafety class.
Class 1 electrical panels are physically separated between safety divisions by walls, floors, ceilings,
distance or barriers. Safety class 1 electrical panels are also physically separated from panels of the
other safety classes (class 2/3) using the same methods. Further details are explained in [Ref-2].
Class 1 circuits are electrically separated between safety divisions by isolators. Safety class 1 circuits
are also electrically separated from circuits of the other safety classes (class2/3) and non- safety class
by isolators.
Class 1 raceways (trays and conduits) are also physically separated between safety divisions by walls,
floors distance or barriers. Safety class 1 electrical raceways are also physically separated from
raceways of other safety classes (class 2/3) and non-safety class by the same methods.
Class 1 electrical equipment is qualified for seismic activity and LOCA
Safety class electrical equipment is shielded from non- safety class equipment to minimise
electromagnetic interference (EMI).
Panels, circuits and raceways of the other safety classes (class 2 and class 3) are routed together with
with those of non-safety class.
Class 1 cable arrangements will pass vertical tray flame tests to confirm flame propagation
performance.
Openings for trays and conduits which penetrate walls and floors between different safety divisions
will be sealed to prevent propagation of fires.
15.6.2
References
[Ref-1] Hitachi-GE Nuclear Energy, Ltd. :”Electrical Equipment and Raceway Separation Plan”
(GA33-1001-0001-00001(ES-GD-B001), Rev.0) (To be issued in GDA Step-4)
[Ref-2] Hitachi-GE Nuclear Energy, Ltd.:”Topic Report for Electrical Installation ” (GA91-920100126(EE-GD-B008) Rev.0) (To be issued in GDA Step-4)
15. Electrical Power Supplies
15.6 Panel and Raceway Layout
Ver. 0
15.6-1
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