HSE-12-009

May 2013

Safety Requirements

Whilst Working On or Adjacent to

ScottishPower Metered or Un-

Metered Supplies

1

CATEGORIES OF AUTHORISATION FOR WORKING ON UNDERGROUND

CABLE NETWORKS Listed here is a brief description of authorisation categories required for the more common and

routine types of operational activity undertaken on and around cable networks.

Authorisation categories may be applied to one, or more, of five voltage levels (LV; 11kV; 33kV;

132kV; 275/400kV) and may also be modified by applying Limitations or Exclusions to the particular

category at the particular voltage level.

WORK CATEGORIES

Authorisation Categories. Description

WI-1 Allows the holder to work on Isolated Plant and Apparatus including work adjacent to Live Apparatus

WI-2 Allows the holder to do Non-electrical work adjacent to Live Apparatus

WI-3 Allows the holder to work on Isolated protection, telecoms or metering equipment

WI-PS Allows the holder to work under Personal Supervision only to the limit of Supervising Persons "WI"

authorisation (primarily for the purpose of training)

WL-1 Allows the holder to Work on, or near to, Live Apparatus as specified on the accompanying Live Work

Certificate

WL-2 Allows the holder to work as the Accompanying Person for work on, or near to, Live Apparatus

WL-PS Allows the holder to work under Personal Supervision only to the limit of Supervising Persons "WL"

authorisation for training purposes

All persons engaged in work in an operational area/site must hold an appropriate Work Authorisation.

Non-Authorised persons are only permitted in an operational area/site with appropriate Standby supervision.

Persons holding PS (Personal Supervision) Authorisation can only carry out activities to the limits of Persons

Authorisation they are being Personally Supervised by.

LIVE WORK CATEGORIES

Authorisation Categories. Description

WL-1.60 Changing a Single Phase Meter

WL- 1.61 Changing C.T. Operated Meters

OPERATIONAL CATEGORIES

Authorisation Categories. Description

OP-1 Switching (Without Limitation or Exclusion within Voltage Level)

OP-2 Switching (With Limitations)

OP-3 Insert and Remove LV Cut-Out Fuses

OP-PS Switching Under The Personal Supervision To The Limit Of The Accompanying Persons “OP”

Authorisation For Training Purposes

SUBSTATION ENTRY CATEGORIES

Authorisation Categories Description

EN-1 Allows the holder independent entry to substations with exposed Live conductors

EN-2 Allows the holder independent entry to substations with NO exposed Live conductors

Refer to OPSAF-13-001 (PSMSP 5.1) for further information on Authorisation Procedures including all

available categories.

This document shall be reviewed as dictated by business change or at a period no

longer than 5 years from date of issue.

2

Your health and safety are vital to ScottishPower!

Accidents at work can be costly. Each year in the UK, they cause:

• hundreds of deaths • hundreds of thousands of

injuries • enormous pain and

suffering for workers and their families.

And accidents harm everyone financially. They can lead to increased expenses, less profit and less money for pay rises and bonuses.

ScottishPower is

taking steps to help

protect your health and safety.

According to the Health and Safety at Work Act 1974, ‘It shall be the duty of every employer to ensure, as far as is practicable, the health, safety and welfare at work of all his employees’. There are a number of regulations that support the Health and Safety at Work Act 1974, these are compulsory and apply in all situations to which the original Act applies. The two key regulations in this case are The Electricity at Work Regulations 1989 and the Electricity Safety Quality and Continuity Regulations 2002. This booklet is not a substitute for any Regulations, Codes of Practice, or health and safety policy.

3

You play an important role When it comes to establishing and maintaining a safe

working environment.

By law, working safely is one of your responsibilities. According to the Health and Safety at Work Act 1974, ‘It shall be the

duty of every employee while at work to take reasonable care of the health

and safety of himself and of other persons who may be affected by his

acts or omissions at work’

ScottishPower, its contractors and your co-

workers are counting on you! It’s up to you to:

Follow all safety rules that relate to your duties and responsibilities.

Minimise the risk of injury to yourself and others.

Minimise the risk of damage to property.

Use protective clothing and safety equipment.

Co-operate with your employer and any other person to ensure health

and safety obligations are met.

Before you act, think! (Risk Assessment) Consider any intended activities, and: Identify possible hazards and understand the measures established

to control these hazards. Assess the risks to your staff, EnergyNetworks staff, other

contractors and the public.

Define steps to control these risks.

Record risk assessments, and communicate your findings to your

working party. Raise any unacceptable risk with your supervisor, and don’t allow

work to start until adequate control measures are established.

4

Typical Ironclad Cablehead and Inspection Requirements

Current Service Equipment and Inspection Requirements

Inspect fuses for any

damage prior to removal and

before insertion

Check for signs of overheating

and or slack terminations also

check condition of the service

cables

Inspect integrity of the casing for any signs of damage

Large deposits of compound

below the sealing chamber

may indicate overheating and or slack terminations

Check security fittings for

intact seals

Service Cable

Check Condition &

Size of Meter Tails

-------

Missing Seals

Damaged Seals

Meter Not Operating

Double

Pole

Switch

Check Seals

100Amp Cut-Out

Sealing Chamber

Earth Block

5

The Risk Assessment will include a

thorough inspection of all

equipment to be worked on. Prior

to work commencing

Work Isolated

Apply Shrouds & Caution Notice @

Point of Isolation

Switch off mains switch to remove load

Via Consumer Unit / Double Pole or Three Pole Switch

Isolate Incoming Supply

Remove Cut-Out Fuses,

Confirm isolation has been achieved and

incoming polarity is correct

Single Phase Meter

Supply

Establish Polarity

at 13 Amp Socket

Complete Risk Assessment

Three Phase Meter

Supply

Confirm Phase

Rotation prior to

isolation

Un-Metered

Supply

Control work areas to prevent

interruptions and protect all third

parties

6

Internal Mains Distribution Fuse Board. Where the flat or premise to be worked in is not clearly marked

in the distribution fuse board (Bemco).

Do not attempt to identify the appropriate supply fuse by

randomly removing fuses from the fuse board.

Any customers who may be affected during the identification

shall be notified of the potential supply interruption prior to work

commencing.

Fuses can be identified with assistance of an approved fuse

finder, this is inserted into a socket within the property and

transmits a signal down the supply cable, which can then be

identified at the distribution fuse board position.

Service terminations

Three Phase Cutout 100amp – Street Lighting Cutout 16amp – Single Phase Cutout 100amp

Isolated Supply

Shroud and Caution

Notice applied at the

point of isolation.

Where reasonably

practicable secure the

door of the Fuse Board

7

Testing

Check for Polartiy

Use Drummond Test Lamps and an independent

earth

or

A Neo Mains Tester to confirm the live conductor as

per the approved procedure within the

Live Working Manual Part 2

Test lamp indications

The Test Lamp must be proved to be working prior to and

following the tests.

Test lamp sequence can be found in Live Working Manual section 2

(OPSAF-12-003).

C.N.E (TNCS)

Combined Neutral &

Earth

S.N.E (TNS)

Separate Neutral &

Earth

Or

8

Testing Continued

Testing a single phase LV Cut Out 230

volts.

Confirming polarity using a Neo Mains

Tester on a single phase LV cut out 230 volts

Earth loop impedance values

S.N.E Separate neutral earth

0.8 ohms (TNS)

C.N.E Combined neutral earth

0.35 ohms (TNCS)

0.8 ohms

0.35ohms

9

Street Lighting Networks

Fifth core supply using mains distributor in conjunction with

street lighting equipment.

Live supply direct from mains distributor.

11kV

Transformer

230 / 415 volts

400amp

16 amp Fuse

Main Supply Cable

Street Lighting

Column Permanent

Live Supply. Lamp

controlled by Cell

on top of column

Substation

Typical Network

11kV

230 / 415 volts

400amp

Street Lighting Control Pillar

230 / 415 volts

100amp

Cutout

30 or 60 amp

Street Lighting Bar

Fifth Core

16 amp Fuse

Main Supply Cable

Street Lighting Column Fifth Core Supply

Substation

Transformer

Network Pillar

ON

OFF

10

Current Transformer (C.T.) Metering

Inspect equipment for general condition and the

environment where it is positioned, prior

to commencing work.

Confirm the panel indications are lit and

the metering is operational.

Determine whether or not there are

exposed live conductors contained within

the panel.

Where live conductors or busbars are

present, they are required to be

shrouded with the approved neoprene

material using the approved insulated

gloves.

Confirm all three CTs are fitted

correctly (direction of load)

CTs should never be left open circuit.

Not shorting out the CTs can cause overheating, fire

risk & electric shock.

Current

Transformers

mounted on

exposed

copper bars

11

Low Voltage CT Metering Muticore Connections

High Voltage CT Metering Muticore Connections

12 Core 2.5mm2

Multicore

7 Core 2.5mm2

Multicore

12

Excavation Work

Prior to any excavation work commencing, the

following requirements shall be met.

Clear work instructions are

issued.

Correct utility records

are provided.

A calibrated cable location device is

available.

Confirm actual location of work site

using work instructions and cable

records.

13

Consideration should also be given to the location or

position of other utilities.

Assess the area to identify inspection covers, water

valve covers and other electrical service pillars.

Haldo pillar (for bus shelter supply) & Water valve &

BT inspection covers in pavement

All excavation work shall comply with HSG 47 “Safe

Digging Practices”. Hand digging shall be carried out to

identify all utilities i.e. water,

gas and power.

No excavation equipment for

example mini excavator or JCB

shall be used within 500mm of

a potential live cable. This

work shall be carried out with

the aid of an appointed banksman.

Note:- All equipment that generates vibration, for

example vibro plates, whackers, rollers etc must be

fitted with anti vibration damping systems. This type of

equipment also has a time limited operation due to the

vibration effects on the body.

14

Where a Risk Assessment has identified the need for

shoring, a trained competent

person shall be required to

install shoring.

Consider soil conditions, depth

of excavation and proximity of

any watercourse.

All excavations on the public

highway must comply with the

New Roads and Street Works

Act.

These are

examples of general road works signs

15

While carrying out excavations assess the equipment

being exposed:-

Cable types whether conventional or plastic.

Presence of pilot cables possible indication of HV

cables.

Tiles or marker tapes can be used as an indication of

the presence of utilities

Confirm number of cables present using cable records

Ensure all cables within the work area are exposed to

assist in identification.

If required track to the nearest service / mains

connection to positively identify the LV mains cable.

Third party utilities drawings should be available to

confirm presence of other services.

Check for manholes, service duct access points, water

or gas main stop valves and previous excavations. These

will all give an indication of the route of services or

utilities.

16

Always obey safety signs and symbols. They are there to protect you and your colleagues.

Prohibition (red and white)

They mean 'Don't do'.

Safe condition (green and white)

They tell you the safe way to do

something or give first aid

information.

Warning (yellow and black)

They warn you that a hazard exists.

Danger tape

This tape is used to

designate a Safety

Exclusion Zone when

removing or replacing

poles.

Mandatory (blue and white)

They instruct you that you must

observe the safety precautions

shown.

17

As a Competent or Authorised person.

Before work begins

Make sure that you are familiar with

the work to be done.

Do not start work begin until all

documentation has been completed i.e.

Risk Assessments & Method

Statements.

Brief the working party on the work to

be done and any hazards, controls or

limitations of the work.

Ensure that the working party is fully

aware of the hazards, control measures and the limitations of work.

It is the responsibility of the Competent or Authorised person to ensure

that all member of his working party are accounted for at all times.

Make sure all members of the working party know which equipment is to

be worked on and that it has been correctly identified.

Be sure working conditions are as you would expect and that you can

carryout the necessary work within the limits specified in the work

instruction.

Only carry out the work described on the work instruction.

Ensure that a safe working environment and work methods are maintained

at all times. Use the correct/approved tools and equipment for the job.

Make sure people in the vicinity are not put in Danger from your work

activity.

Make sure safe means of access and egress are identified, utilised and

maintained throughout the work.

18

Always remember to wear the appropriate Personal

Protective Equipment For access to certain areas, you and your working party will need

to wear personal protective equipment (PPE). This may include:

If you have any doubts about the PPE you need to wear at a

particular site, ask the site supervisor. It is the responsibility of

the wearer to inspect all PPE before use and obtain a

replacement if any item is found to be defective.

Insulated Rubber

Gloves 7.5kV Class 1

Full face visor or light eye

protection

To protect your hearing

Coveralls

19

Be aware of the harmonised cable core identification

colours:

EXISTING HARMONISED

Hybrid service

Waveform main

Two core armoured PVC

Paper Insulated Lead Covered Cables (PILC)

Wire Armour

Tape Armour

Corrugated

Aluminium

(Coral)

Metering and Earth Cable

20

Jointing

Safe access to and from the point of work.

Ensure a safe means of access and egress is

established prior to commencement of work and

maintained during the work.

Consideration should be given to providing ease

of access and egress to the work location for

example stepping one side on the excavation/joint

bay.

The excess excavated material shall be either

removed or placed clear of the excavation to avoid

collapse.

21

During jointing work the appropriate precautions

shall be taken:-

Low Voltage Assess cable condition prior to and

throughout the stripping process.

Apply continuity strap.

Carry out work using only approved

Live Working Procedures and Approved

insulated tools and materials.

Equipment

Inspect Approved LV test lamps and testers for

condition and correct operation.

Neo Mains Tester

22

Continuity

Strap

Inspect Insulated tools for

condition and suitability for

work. Report any damages or

defects and arrange for

replacements.

Inspect Instruments are in good condition, fit for purpose and

are supplied with fused leads.

Ensure that all instruments carry a current inspection or

calibration label.

Multimeter – ensure fused leads are used Megger

Tong tester - Earth Loop Impedance Tester - Phase rotation tester

23

In case of emergency If all persons involved do their part to ensure safety,

accidents should not happen. But know how to respond

just in case.

If plant comes into contact with any Live equipment the

operator should jump clear without making contact with

the plant and ground at the same time. Control the area

to prevent access until the situation has been made safe

Call for help right away

Call the emergency services where appropriate and

contact the SAP for assistance immediately.

Ensure your personal safety

Do not try to rescue someone unless it is safe to do so,

if in doubt don’t.

Provide first aid treatment

If you have been properly trained, help the

person until medical assistance arrives. (Find

out about first aid courses if you have not

been properly trained).

24

Secure the site

Limit access to the site until the SAP/Site Supervisor

arrives and takes control of the emergency. Prior to

giving access to the site, provide information to the

Emergency Services of the hazards and controls on site.

Ensure safe and controlled access is provided for

Emergency Services at all times.

Report the incident to

EnergyNetworks staff as

soon as possible

Provide the following

information:

The address and site

location.

The name of the

injured person and his or her employer.

When the emergency services arrived on site.

Specific details about the accident or incident.

Emergency Telephone numbers for

life or limb incidents only OCC Scotland 0141 776 2877

NMC Manweb 0151 609 4999

25

Persons on the site have responsibilities

too!

Store materials,

equipment and

tools properly.

This should be

done as soon as

you've finished

with them. Tools

and equipment left lying around can

cause injury.

Never take

chances or

short cuts.

Report any

Health and

Safety

hazards. This

must be done

immediately.

Follow the

relevant

established

site

emergency

procedures.

Make proper use of PPE

And don't interfere with equipment

provided for Health and Safety.

Control the work site.

Control

the work

area to

prevent

third

party

access. Never try to

perform work you

are not trained

and qualified to

carryout.

Ask for help if

you are unsure

about any

procedures.

Follow all

relevant

EnergyNetwork

s Health and

Safety policies.

You should keep

up to date with

any revisions,

new

requirements or

regulations. This will include

compliance with the Safety Rules.

26

How safely do you work?

Use the checklist to find out! The next time you're at work, be

sure that you: