VRIOGS 010.3 RevA - Public Transport Victoria

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8 VRIOGS 010.3 Revision ASECTION 7.0 BUILDING DESIGNThe design and sizing of the building shall only proceed once the equipment to behoused has been selected and it is confirmed what specific equipment will be used.The building design shall take in to account the confirmed equipment dimensions, allrequired clearances as well as any other spatial considerations.The design of the building to house the electrical installation shall consider thefollowing:7.1 BUILDING LOCATION CONSIDERATIONSThe following considerations shall be made when determining the location to site thetraction substation:a) Availability of incoming HV AC supply.b) Site access - all weather heavy vehicle access for construction andfuture maintenance requirementsc) Space availability and site topographyd) Location from track and orientation to tracke) Amenities – require stormwater and sewerage connections.f) Site parameters – current and future industrial/residentialg) Electrical sectioning – location of 1500V overhead sectioning point. (the existing sectioning points may have to be changed to facilitate thelocation of sectioning points adjacent to substations)h) Security considerationsi) Susceptance of site to adverse whether conditionsj) Site specific environmental requirements and considerations7.2 BUILDING DESIGNa) The construction of the substation building shall comply with all relevantclauses of the Australian Standards and/or the Building Code.b) The substation building shall be of solid brick construction or tilt upconcrete slab construction and shall be built to last for at least 75 yearswithout requiring any major maintenance.c) All structures, buildings and footings shall be designed as per AS 1170together with the following additional loadings:• Short Circuit Forces• Operational Loads• Manufacturer’s specified loading data, and• Any other relevant loads.d) Termite Control - The whole of the area of the building, and a strip 300mmbeyond the perimeter wall shall be treated against termites. The treatmentis to be carried out by a specialist firm. The Contractor shall providecertification that the treatment has been carried out in accordance with AS3660.NOTE:This document is controlled only when viewed on the DOT Engineering Standards website.Any other copy of this document is uncontrolled, and the content may not be current.
VRIOGS 010.3 Revision A 9e) Stormwater Drainage - The drainage system shall be designed for aminimum return period of 20 years for the local area. The drainage systemshall be sufficient to collect and discharge water which is trapped by sitefeatures such as footings, cable trenches, buildings and fences. Internalguttering is not permitted. All stormwater shall be collected anddischarged beyond the site of the substation to the satisfaction of the localDrainage Authority. The design shall also adhere to the requirements ofsection SECTION 9.0 with respect to oil containment.f) Sewerage Installation – The substation sewerage shall be connected tothe local sewer network and shall be carried out to the satisfaction of theSewerage Authority.g) It is mandatory to have a water supply to the substation. The preference isfor mains connected water supply. If mains water supply is not available arainwater tank shall be used.The rainwater tank if required shall have a capacity of 7 kilolitres withcorresponding galvanized steel framed tank stand base. The rainwatertank shall be positioned such that it can be supplied from the SubstationBuilding gutters. The water tank shall be reticulated to the AmenitiesBuilding toilet and sinks by means of a suitable pump. The pump shall belocated in a secure, concealed position such that any discharge of waterfrom failure of the pump shall be adequately drained. The rainwater tankshall be provided with a vermin proof stainless steel fine mesh screen withgalvanized finish over the top opening and an overflow outlet. Theoverflow outlet shall be connected to the stormwater drainage system.h) The substation building shall be designed so that the areas hereunder formseparate rooms:- High Voltage and 1500V DC equipment room- Signals Switchgear room. (Only if required)- Communications. (Only if required)- External LV supplied switchgear room. (Only if required)- Amenities room- Toilet.i) The substation external walls and doors shall provide adequate securitycommensurate with safety of personnel and security of HV equipmentcontained therein and has a minimum Fire Resistance Level of120/120/120.External wails and roof to be of colour that is to suit the amenity of thearea.j) Internal walls shall have a Fire Resistance Level of 120/60/60 and be fittedwith doors, where required, of a matching Fire Resistance Level.NOTE:This document is controlled only when viewed on the DOT Engineering Standards website.Any other copy of this document is uncontrolled, and the content may not be current.
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VRIOGS 010.3 RevA - Public Transport Victoria

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