Transcript Sample Presentation

October 2006
Traction & Rolling Stock
Electrical Safe Working
Procedure
Introduction
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General Principles.
Working Safely.
Personnel.
Isolation Procedure.
Limitation of Access Certificate.
Batteries.
Key Electricity at Work Regulations.
Video.
Recap.
T & RS Electrical Safe
Working Procedure
2
General Principles
Voltage Explained
Reference: Appendix A
T & RS Electrical Safe
Working Procedure
3
General Principles
Current Explained
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Never assume that the equipment
you are working on is dead.
The effects of an AC current of
50Hz on the human body.
Current
2 mA
2 to 5 mA
<10 mA
Sensation
Max Safe current
Threshold of feeling
Safe ‘Let Go’ current
10 - 15 mA
20 - 40 mA
50 - 200 mA
Muscular Contraction
Arrests respiration
Ventricular fibrillation
T & RS Electrical Safe
Working Procedure
4
Personnel
Duty Holders Structure for T&RS
4.1.1
It is also important to remember that, although duties may be delegated
to others, the responsibilities associated with those duties cannot be
Prime Duty Holder
delegated.
A. Mercado
Principle Duty Holder
L. Jackson
Wembley
Senior Authorised Persons
Willesden/Peterbrough
Senior Authorised Persons
Wolverhampton
Senior Authorised Persons
Manchester/Liverpool
Senior Authorised Persons
Glasgow/ Preston/ Carlisle
Senior Authorised Persons
Authorised Persons
Authorised Persons
Authorised Persons
Authorised Persons
Authorised Persons
Appointed Persons
Appointed Persons
Appointed Persons
Appointed Persons
Appointed Persons
4.1.1
When an individual is given Duty Holder status he will be informed verbally
and in writing.
Reference: 4.1
T & RS Electrical Safe
Working Procedure
5
Working Safely
Limitation of Access Certificates
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What if someone who is not covered by the Duty Holder structure
needs access to the electrical test area?
Method 1. Access by non authorised persons is
strictly controlled. When required, Authorised
Persons need to escort such persons.
Method 2. If 100% supervision may not be
maintained. A Limitation of Access Certificate
must be issued to the individual or group
leader concerned.
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How long does a Limitation of Access Certificate last for? One Day
Reference: 5.6.4
T & RS Electrical Safe
Working Procedure
6
Batteries - Personal
Personal Injury: If
electrolyte enters the eye it should be washed out immediately with
the specified irrigation fluid using an eye irrigator. For skin burns, or if
the eye irrigator is not available, the affected area should be washed
out immediately with copious quantities of clean running water.
 Clothing
soaked with electrolyte must be removed immediately.
 In
all cases immediate medical attention must be obtained and
medical staff informed whether acid or alkaline electrolyte is
concerned.
T & RS Electrical Safe
Working Procedure
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RECAP
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No live working unless:
– It is unreasonable to work dead
– and it is reasonable to work live
– and suitable precautions are taken to
prevent injury
Reference:
T & RS Electrical Safe
Working Procedure
8
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