Siemens ST950 Handbook page 2

FOR THE OEM EQUIPMENT BEING INSTALLED OR REMOVED ALLOWS, LIVE
WORKING MAY BE CONSIDERED.
Safety of Maintenance Personnel
In the interests of health and safety, when using or servicing this equipment the following
instructions must be noted and adhered to:
• Only skilled or instructed personnel with relevant technical knowledge and experience,
who are also familiar with the safety procedures required when dealing with modern
electrical/electronic equipment are to be allowed to use and/or work on the equipment.
All work shall be performed in accordance with the Electricity at Work Regulations
1989 or the relevant local, state and government regulations.
• Such personnel must take heed of all relevant notes, cautions and warnings in this
Handbook and any other Document or Handbook associated with the equipment
including, but not restricted to, the following:
• The equipment must be correctly connected to the specified incoming power supply.
• The equipment must be disconnected / isolated from the incoming power supply
before removing any protective covers or working on any part from which the
protective covers have been removed.
• Any power tools must be regularly inspected and tested.
• Any ladders used must be inspected before use to ensure they are sound and not
damaged.
• When using a ladder, before climbing it, ensure that it is erected properly and is not
liable to collapse or move. If using a ladder near a carriageway, ensure that the area is
properly coned and signed.
• Any personnel working on site must wear the appropriate protective clothing, e.g.
reflective vests, etc.
In the event of any person working elsewhere on the junction, it is recommended that the
Mains Supply to the controller be switched off and the master switch locked in the 'off'
position.
If you are not certain that the entire system is ELV, you must switch off the
Mains Supply to the controller and lock the Master Switch in the 'off' position.
If the controller uses an Expansion Cabinet, and in the exceptional
circumstances that the expansion cabinet also needs a mains supply (to be
avoided wherever possible), then the supply to the expansion cabinet must
also be switched off and the master switch in the expansion cabinet locked in
the off position.
To ensure and guarantee isolation the double pole master switch should be opened.
When re-commissioning signals, the following sequence is recommended to ensure that the
correct signal startup sequence is followed:
Security classification
Version
Last Editor
Document Name
Copyright © Siemens plc 2020. All Rights Reserved.
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7
manpreet.jeerh
ST950 ICM Handbook
Mobility, Intelligent Traffic Systems
Sopers Lane, Poole, Dorset, BH17 7ER
Page
Status
Date
Document No.
Mobility is a division of Siemens Plc
2 of 154
Issued
January 2020
667/HE/45950/000