Traction & Rolling Stock Electrical Safe Working

Procedure

OctoberOctober 200 20066

T & RS T & RS Electrical Safe Electrical Safe WorkingWorking Procedure Procedure 2

Introduction

General Principles. Working Safely. Personnel. Isolation Procedure. Limitation of Access Certificate. Batteries. Key Electricity at Work Regulations. Video. Recap.

T & RS T & RS Electrical Safe Electrical Safe WorkingWorking Procedure Procedure 3

General Principles

Voltage Explained

Reference: Appendix A

T & RS T & RS Electrical Safe Electrical Safe WorkingWorking Procedure Procedure 4

General Principles

Current Sensation2 mA Max Safe current2 to 5 mA Threshold of feeling<10 mA Safe ‘Let Go’ current

10 - 15 mA Muscular Contraction20 - 40 mA Arrests respiration50 - 200 mA Ventricular fibrillation

Never assume that the equipment you are working on is dead.

The effects of an AC current of 50Hz on the human body.

Current Explained

T & RS T & RS Electrical Safe Electrical Safe WorkingWorking Procedure Procedure 5

A p po in te d P e rso ns

A u tho rised P erso ns

W e m b leyS e n io r A u th orise d P e rso ns

A p po in te d P e rso ns

A u tho rised P erso ns

W illesd e n /P ete rb ro u ghS e n io r A u th orise d P e rso ns

A p po in te d P e rso ns

A u tho rised P erso ns

W o lve rha m p tonS e n io r A u th orise d P e rso ns

A p po in te d P e rso ns

A u tho rised P erso ns

M a n ch e s te r/L ive rp o o lS e n io r A u th orise d P e rso ns

A p po in te d P e rso ns

A u tho rised P erso ns

G la sg ow / P res to n / C a rlis leS e n io r A u th orise d P e rso ns

P rin c ip le D u ty H o ld erL . Jackson

P rim e D uty H o ld erA . M erca do

Duty Holders Structure for T&RS

Personnel

Reference: 4.1

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 delegated.

4.1.1 When an individual is given Duty Holder status he will be informed verbally and in writing.

T & RS T & RS Electrical Safe Electrical Safe WorkingWorking Procedure Procedure 6

Working Safely

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.

Reference: 5.6.4

Limitation of Access Certificates

One Day How long does a Limitation of Access Certificate last for?

T & RS T & RS Electrical Safe Electrical Safe WorkingWorking Procedure Procedure 7

Batteries - Personal

In all cases immediate medical attention must be obtained and medical staff informed whether acid or alkaline electrolyte is concerned.

Clothing soaked with electrolyte must be removed immediately.

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.

Personal Injury:-

T & RS T & RS Electrical Safe Electrical Safe WorkingWorking Procedure Procedure 8

RECAP

– It is unreasonable to work dead– and it is reasonable to work live– and suitable precautions are taken to

prevent injury

No live working unless:

Reference:

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