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T H E SPILLISSUE 3
Inter-agency response exercise
Life as an NCEC emergency responder
Getting the most out of Chemdata
ADR 2017 changes affecting lithium battery labelling
Latest call statistics
Welcome to the third issue of ‘The Spill’, the chemical safety newsletter for blue light services around the globe.
The Spill provides useful information about
chemical incident management and effective
emergency response from the National
Chemical Emergency Centre (NCEC).
The UK Chemsafe service, managed by NCEC
on behalf of the Department for Transport and
Chemical Industries Association, provides a
free at the point of use advice telephone line
which connects chemical specialists with
the emergency crews attending incidents
involving chemicals. The chemical specialists
can provide advice to emergency services
personnel over the telephone (Level 1) on
hazards, decontamination, reaction predictions
and will endeavour to make contact with the
manufacturer if additional support is required.
In conjunction, NCEC also provides chemical
advice via the European Intervention in
Chemical Emergencies (ICE) network and
directly supports several emergency services
across the world.
THE SPILL – ISSUE 3
An excellent training opportunityOn the 1 November 2016, NCEC was invited to observe, and if called upon, take part in a multi-agency exercise coordinated by Bedfordshire, Cambridgeshire and Hertfordshire Road Policing Unit.
The exercise was organised to take
place the day before one of the
biannual Carriage of Dangerous Goods
Practitioners’ forums that NCEC
representatives attend each year. This
forum brings together representatives
from the police, the Vehicle and Operator
Services Agency (VOSA) and other
enforcement agencies to coordinate
dangerous goods enforcement to
promote best practice. They work closely
with the Department for Transport (DfT)
and Health and Safety Executive (HSE).
First responders from Cambridgeshire
Constabulary, Cambridgeshire Fire and
Rescue Service and the East of England
Ambulance Service took part in the
exercise itself and were assisted by LJ
Transportation for the recovery of the
vehicle, which was supplied by Turners
of Soham.
The aim of the exercise was to prepare
front-line responders in Cambridgeshire
for large-scale chemical incidents on
the county’s roads. While such incidents
are uncommon, they can present wide
ranging issues that responders need to
be ready to deal with. The exercise further
aimed to promote coordination and
cooperation between emergency services
to ensure a continued and effective inter-
agency response throughout the county.
Chemsafe is often consulted by
emergency service personnel when
designing exercise scenarios. Our
skilled Emergency Responders
offer their expertise to help create
challenging, but realistic, incident
scenarios that can really test the
capabilities of the emergency services.
In addition, first responders can call
Chemsafe during these exercises,
as they would in a real situation,
to obtain advice and assistance.
This provides a shared learning
opportunity for everyone involved and
allows emergency service personnel
to familiarise themselves with the
Chemsafe service before they are
required to use it in a live situation.
INTER-AGENCY RESPONSE EXERCISEBy Samuel Turner, Emergency Responder
‘Chemsafe is often consulted by emergency service personnel when designing exercise scenarios. Our skilled Emergency Responders offer their expertise to help create challenging, but realistic, incident scenarios that can really test the capabilities of the emergency services.’
THE SPILL – ISSUE 3
The exerciseThe scenario began with the
emergency services being notified
of an overturned tanker on the A1
carrying a load that was identified
from the vehicle placards as
UN1863. The agencies involved
arrived at the exercise at Royal Air
Force Alconbury airfield, to find
parked cars simulating queuing
traffic leading up to the tanker. The
tanker appeared to have collided
with a van, overturned and was now
leaking its load onto the road.
A smoking bystander was
immediately removed from the
scene. The driver of the tanker
was assessed and found to have
suffered only minor injuries that
could be treated on site. The driver
of the van had fled from the incident
and left a wounded passenger, who
was rescued by responders and
taken to the local hospital.
Upon investigation, the leaking
tanker was found to be carrying
39,000 litres of what was perceived
to be aviation fuel, based on
the UN number. At this point,
Station Commander Stuart Smith
called Chemsafe to find out more
information about the chemicals
involved and discuss possible
remediation actions.
Stuart spoke to Dr Tom Baker, an
Emergency Responder at NCEC, who
explained that aviation fuel can be
carried under a range of UN numbers
depending on its exact formulation
and associated properties. Tom
confirmed that UN1863 was indeed
turbine engine aviation fuel and
advised that it has similar hazards and
properties to petrol, so the incident
could be responded to in the same
way as a spill from a petrol tanker.
Tom further confirmed Stuart’s
proposal to bund the leak to stop
further movement of the spill and
prevent the fuel from entering any
watercourses. He also confirmed
that normal fire kit would be
sufficient for minimal contact with
the liquid and breathing apparatus
should be worn to prevent inhalation
of the volatile fuel’s fumes.
Furthermore, for clarification, Tom
advised that the main hazard the
fuel posed was the flammability of
its vapour and assured the officer
that the fuel was likely to have
minimal reaction with the exterior
surface of the tanker, possibly
removing the paint at most.
The Cambridgeshire, Hertfordshire
and Bedfordshire Drone Unit was
also on scene to view the incident
from above. Coordination between
this unit, the fire and rescue service
on the ground, and local police
helped to evacuate a nearby school
as a precautionary measure in case
the incident escalated.
Before setting up a bund to contain
the leak, the van involved in the
collision to be winched away.
However, upon assessment,
it was discovered that it was
illegally transporting 1,000 litres
of highly corrosive hydrochloric
acid (no vehicle placards present).
Fortunately, all of the drums inside
were sealed and intact, and posed
no immediate risk to the responders.
The van was able to be towed out of
the path of the spill and moved to a
safe distance.
Fire officers set up a barrier around
the tanker to contain the leaking fuel
using a plastic, water-filled boom.
This prevented any contamination to
local watercourses and ecosystems,
allowing the fuel to be pumped out
and disposed of securely. After this
was complete, two cranes slowly
winched the tanker back onto its
wheels assisted by airbags placed
underneath the right-hand side.
Overall, representatives from 35
police areas, Cambridgeshire Fire
and Rescue Service, the United
States Air Force, Bedfordshire and
Suffolk Fire and Rescue Service,
HSE and DfT attended the event. It
was heralded as a ‘great success’
by Stuart Appleton who is a Traffic
Officer and organised the exercise.
The practical experience provided
by these exercises for NCEC
emergency responders help
support their training and further
development alongside meeting the
emergency services who utilise the
Chemsafe service.
THE SPILL – ISSUE 3
What was your background before joining NCEC?
FD: My degree is in biotechnology and
water treatment. I started my career at
the Centre of Documentation, Research
and Experimentation on Accidental
Water Pollution (CEDRE) in France where
I conducted research on oil spills at
sea. I then joined AEA Technology (now
Ricardo Energy and Environment) and
continued my research on the effects of
bacteria on the breakdown of oil spills
at sea.
tend to be complex and the questions
asked can be very technical. I do like
calls from Chemsafe calls because,
over the years, the training of hazardous
materials and environmental protection
advisers (HMEPA) has improved and
we’re at a point where, if we get a call,
we know it’s going to be challenging.
It also means we have to keep up
to date with the latest research and
regulations in the chemical and
emergency response world. So it is
challenging, it is interesting, but it does
demand a lot of effort to keep up to
date on what we may be called about,
but that’s where my role as Internal
Training Lead comes in. As part of
our continued development, we’re
always looking at how we can adapt
and adjust to better serve the role as
emergency responders. More recently,
that’s involved us looking at lithium
batteries and we’re now trying to get
ahead of the curve with nanomaterials
becoming more and more relevant. And,
all the while, we’re reviewing the advice
we give in certain situations to see if it
can be improved, so that can be quite
demanding at times.
Do you still get to use your marine experience in emergency response?
FD: I do, we have a Carechem Marine
service, which provides modelling
expertise for clients. This helps them
gain an understanding of how chemicals
released at sea will behave over time
and how to respond. It could happen
anywhere in the world, so we have to
look at different currents and climates,
etc. We spend time with our clients
working out what a chemical will do now
once it has been released from a ship.
Will it impact on fisheries? On tourism?
Is it a hazard to the responders who will
attempt to sort out the ship?
What do you think the challenges are of handling an emergency call for Chemsafe?
FD: Most of our Chemsafe calls are
from fire and rescue services. When
they call it is usually because they are
requesting specialist chemical advice
or want a second opinion. These calls
So how did that lead to a role in emergency response?
FD: At the time I was working in
a department called Marine and
Freshwater where we were doing a
lot of research into oil and chemical
spills at sea. I moved through a few
departments in AEA Technology and
ended up being attached to NCEC. My
manager at the time asked if I wanted to
be an Emergency Responder as well as
conducting my research and I said yes.
LIFE AS AN NCEC EMERGENCY RESPONDERFabien Daniel is an Emergency Response Supervisor and Internal Training Lead at NCEC. He first joined the emergency response team in 2001 and has, over the course of his career, performed many different roles within NCEC. In this article, we talk to Fabien about how he feels emergency response has changed in the last 15 years.
By Tom Johnson, Emergency Responder
THE SPILL – ISSUE 3
The 2017 edition of the European Agreement concerning the International Carriage of Dangerous Goods by Road (ADR) has been released and can be downloaded from the United Nations Economic Commission for Europe (UNECE) website (goo.gl/20aJgu).
It has the usual transitional period of 6
months, meaning you have until 1 July 2017
to apply the changes. It contains new or
revised provisions concerning:
• The construction of vehicles, including
allowing them to be gas powered (using
liquefied natural gas (LNG), compressed
natural gas (CNG) or liquefied petroleum
gas (LPG).
• Internal combustion engines or machinery
powered by flammable liquids or gases.
• Electric vehicles.
• Lithium batteries and ammonia
dispensing systems.
• The examinations for safety advisers and
drivers of vehicles carrying dangerous
goods.
• The contents of the instructions in writing.
If you have any questions about the
new regulations or have general queries
about the carriage of dangerous goods,
please email the Vehicle Certification
Agency ([email protected]) or the
Department for Transport Dangerous
Goods Division ([email protected].
gov.uk).
NEW EDITION OF ADR2017 edition now available for download.
How do you feel Chemsafe has changed in the last 15 years?
FD: While the type of advice we give
and the sorts of questions we get asked
haven’t really changed that much, the kind
of incidents we get contacted about have.
When I began working on Chemsafe, most
calls were linked to transport incidents
and fires on sites. Over the years, we
have seen more calls about site incidents
and, because the Chemsafe user base is
familiar with our technical expertise, they
ask for more advice. The fire and rescue
services have started using us less as a
last-resort safety net and more as a first
point of contact because they recognise
the value of the advice we give. We now
receive more calls from the police about
illicit activities involving chemicals, which
we rarely got 5 or 6 years ago.
released and the risks of adding water.
We then started trying to formulate a plan
for how to deal with the fire. Initially, the
fire and rescue service crew had started
by smothering the fire with sand, but had
quickly run out, which is unsurprising
given the size of the fire. We were asked if
dry foam could be used, but we advised
against this due to decomposition hazards.
We suggested sodium chloride should be
used, but this couldn’t be sourced in the
volume needed. After several calls, the
crew decided to resolve the matter with
more sand and sourced 15 tonnes. We
knew the theory behind what we needed
to do to resolve the incident, it was just a
challenge to get what we needed.
Do you recall any interesting Chemsafe calls you helped out on?
FD: There have been so many over
the years, they sort of blur into one. I
do remember I got a call from a metal
recycling yard which was on fire. There was
magnesium and metal shavings on site in
barrels and stacked two pallets high. We
started by providing advice on the hazards
that this presented - metal oxides being
THE SPILL – ISSUE 3
We know that fire and rescue services, in particular, highly value Chemdata and the information they can get from it, to help them manage incidents safely and efficiently.
While Chemdata has been designed to be
simple and intuitive to use, we also know
that many users benefit from additional
training to ensure they can get the most
out of it. In consideration of this and in
response to requests for more in-depth
Chemdata training, NCEC has developed
a new workbook-based training module
covering not only the basics of how to use
Chemdata and search effectively, but also
additional functionality that is available.
We find that most users easily pick up
the basics of searching and interpreting
a document, but many people are not
fully aware of all the functionality that
is available in our standard interface.
Searching is another area where students
benefit from the tips and worked
exercises that can help them narrow their
search results more effectively.
The training takes delegates through the
essentials of using Chemdata such as:
• Familiarisation with the layout and
menus for searching.
• What a document contains and how
to print with the required information.
• Adding private notes and sharing
them with colleagues.
• How to change user options and view
the history of past searches.
GETTING THE MOST OUT OF CHEMDATA® New practical Chemdata training session now available
By Maria Stearn, Product Manager
THE SPILL – ISSUE 3
Please contact
Maria Stearn Chemdata Product Manager,
for options and prices
t: 01235 753335
The course uses scenarios that are based
on real-world examples to help users gain
confidence in using Chemdata. Some of
these can be used as a test at the end of
the training session if desired.
It is intended that students use Chemdata
on their own laptops or tablets during the
session to ensure that they get hands-
on experience of using Chemdata. It is
very much an interactive session. We
have seen from those that have used our
online training module that they learn far
more from the interactive approach and
actually using Chemdata themselves
during the training.
First used with one of our newest
customers, Abu Dhabi Police, this
package can now be bought by all of
our Chemdata users. Our most recent
delegates were from Greater Manchester
Fire and Rescue Service, and we
have received very positive feedback
regarding the benefits of the session.
At approximately 3½ hours long, this
training session can be added to a
Chemsafe training session or some
of our other short presentations
(hydrogen fluoride, lithium batteries
and the Globally Harmonized System
of Classification and Labelling of
Chemicals (GHS)) to provide a cost-
effective training day or presented on its
own as a half-day training session.
‘Now feel more confident using Chemdata’ D Baxter
‘Worked though scenarios on easy-to-follow steps’ John Fletcher
‘Very informative. Answered a lot of questions I had. Feel much more confident when interrogating and searching for info on Chemdata. Good handout and questions/scenario questions’ M Threader
THE SPILL – ISSUE 3
Battery safetyLove them or hate them, batteries are an
integral part of modern living. However,
recent incidents have raised their profile
from help to hindrance – some airlines
have even banned certain mobile phones
from their flights due to the fire risk posed
by the battery.
What is a battery?In simple terms, an electric battery
comprises a number of cells in which
chemical energy is converted into
electrical energy. Even the humble potato
can be used as the electrolyte in a
battery and many of you or your children
will have conducted this experiment
at school. A cell comprises an anode,
a cathode and an electrolyte. When
the external circuit is complete (by
connecting an electrical load) electrons
flow from the anode to the cathode.
What are the issues?Batteries are part of modern life – be it
in mobile devices, cars or for back-up in
the event of power cuts. As hazardous
materials are used in battery construction,
many incidents involving batteries
become hazmat situations. There have
been a number of high-profile incidents
involving mobile phones, hover boards
and even brand new aircraft.
As from 1 January 2017, a new labelling system will be introduced for lithium cells and batteries under the European Agreement concerning the International Carriage of Dangerous Goods by Road (ADR) 2017. The new labels are shown below and are for packaging only.
There is a transitional period up to 31 December 2018 during which the new
labels will work alongside the current labelling used under ADR 2015.
The second label
will be used for
all consignments
that do not comply
with ADR special
provision 188.
The first label
will be used for
lithium metal
batteries (UN 3090
and UN 3091)
and lithium ion
batteries (UN 3480
and UN 3481)
if they comply
with ADR special
provision 188.
ADR 2017 changes affecting lithium battery labelling By Dr Nigel Blumire, Emergency Responder
Place for UN numbers(s)
Place for telephone number for additional information
Min
imum
dim
ensi
ons
110
mm
Minimum dimensions 120 mm
THE SPILL – ISSUE 3
What about large scale?A wind farm was constructed that
comprised 12 wind turbines. It was
decided to use a battery storage
solution to ‘smooth’ the energy
supply. This resulted in two fires in
consecutive months and these fires
had been allowed to burn out with
minimal damage, but had ‘taught’
the company that, with this emerging
technology, they should have effective
fire protection in place. They decided
to stockpile dry agent in case a third
fire occurred.
Another fire involved 12,000 lead acid
batteries. The dry agent and bulk
carbon dioxide sourced by the fire
and rescue service were ineffective.
Therefore, it was decided to fight the
fire defensively with water to stop it
from spreading to adjacent buildings
and infrastructure. The fire caused
£12 million of damage to the facility.
This incident highlights that, on a large
scale, the only effective option for
lead-acid battery fires appears to be
water. However, if the risk is too great
controlled burn can be considered.
What can I do?The world of batteries is constantly
striving for better solutions to satisfy
the demand for consumer electronics
and future sustainable transport. This
research is providing innovative solutions,
but this can result in a hazmat situation
for emergency services for common
incidents. If you wish to know more about
battery technology, NCEC can help. We
provide chemical safety training with
specific courses on this topic. The course
provides an insight into the properties,
hazards and effective response to the
technology of the modern world.
Lithium (or lithium-metal)• The lithium metal is the anode in the
battery and the electrons flow through
an electrolyte made up of a lithium
salt in an organic solvent to a cathode
commonly made of manganese
dioxide.
• They are commonly used due to their
long life.
• If short circuited, they discharge very
rapidly resulting in overheating, the
case rupturing or an explosion.
• Most consumer batteries will
incorporate overcurrent or thermal
protection to prevent explosion.
• These batteries are convenient
source of lithium metal for illegal drug
laboratories.
• Since the batteries contain lithium
metal and a flammable electrolyte, a
dry agent is the advised extinguishing
media for UN3090 and UN3091.
• If in doubt, allow to burn.
What is the future?The rise in electric vehicles, portable electronic devices and energy storage
solutions will bring the emergency services more and more into contact with these
hazmat situations. Each type of battery needs to be dealt with differently:
Lithium Ion• The anode in a lithium ion battery
is made of carbon and the cathode
is made of a metal oxide. The
electrolyte is made from a lithium salt
in an organic solvent.
• The batteries produce heat in the
anode and oxygen at the cathode.
• If overheated or overcharged, the
batteries may suffer thermal runaway
and cell rupture, which can lead to
combustion in extreme cases.
• A number of safety features are
added to the batteries to prevent
overheating or pressurisation, but
manufacturing faults have resulted in
mass recalls.
• Rechargeable lithium batteries
contain no metallic lithium, but a
flammable electrolyte. Therefore
water is the advised extinguishing
media for UN3480 and 3481.
• If in doubt, allow to burn.
Lead acid• Lead acid batteries are normally used
in cars, but can be used in other
energy storage solutions.
• When fully charged, a lead-acid
battery contains an electrolyte of
sulfuric acid with an anode of lead and
a cathode of lead dioxide.
• As the battery becomes discharged
the sulfuric acid electrolyte becomes
more dilute and the two plates
become lead sulfate.
• As the battery discharges and the
electrolyte is more dilute it is more
prone to freezing especially in cold
weather.
• If excessive charging occurs,
more hydrogen and oxygen can
be produced causing a risk of an
internal explosion. Normally the gas
will be vented, but if malfunction or
overheating occurs, gas may build up.
• Lead-acid batteries can give off
hydrogen and hydrogen sulphide, but
in small quantities so will only be a
risk in a confined space with ready
ignition source.
• Disconnect battery and ventilate.
THE SPILL – ISSUE 3
Industrial fire (August 2016)We were contacted by an FRS crew dealing with what
was believed to be containers of red diesel. It was thought
the diesel was being illegally treated to remove the red
colouration. We advised the crew that sulfuric acid is used to
do this, which could produce toxic fumes if combusted.
It later emerged that used vegetable oil was in the containers
which, it was thought, was going to be converted to biodiesel.
Using our extensive knowledge base, we were able to inform
the crew that sodium hydroxide (a corrosive chemical) and
methanol, which is highly flammable and toxic are used in the
conversion process.
NCEC has a wide range of information sources and contacts.
These are maintained in an easily accessible format to help
reduce response times, which enables us to respond quickly
and effectively to all types of chemical incidents.
CALLS OF INTEREST
Decontamination
Disposal
Emergency number checks
Emergency response - general
Exercise
Fire
General chemical information
Identify chemical or company
Information on NCEC/Chemsafe
Medical/first aid
Reaction
Spillage/release
Technical queries
CALLER TYPES
LATEST CALL STATISTICS
ENQUIRY TYPES
Fire and rescue services
Police
Medical Professional
Local authority
Call data April - September 2016
Environment Agency
ICE Centre
Other Company
World War 2 mine (August 2016)We received a call from a fire and rescue service (FRS) crew
dealing with what was believed to be a World War 2 chemical
mine. After discussions with Army bomb disposal engineers,
it was confirmed that the device was a mustard gas mine.
The FRS crew said the device had leaked and the material
remaining inside had solidified.
Our Emergency Responders informed the FRS crew what
risks mustard gas posed. We then provided advice on
what first aid treatment would be necessary for anyone
who had been exposed to the contents of the mine, and
how to decontaminate equipment used in the disposal and
containment of the mine.
Our Emergency Responders’ expertise allows us to quickly
and safely assess chemical incidents. The range of products
covered by our software means that even obscure risks can
be easily assessed, and timely and appropriate advice given.
By Tom Johnson, Emergency Responder
THE SPILL – ISSUE 3
Organised by:
Media partner International media partners
Now in its 10th year, Hazmat 2017 is an essential opportunity for Hazmat specialists to share experiences and knowledge with like-minded professionals working in the hazmat and chemical incident industry. The event draws upon the knowledge and experience of a range of hazmat professionals and industry leaders, as well as that of NCEC’s own emergency responders & experts and those from Tactical Hazmat.
Visit http://the-ncec.com/hazmat-2017 to book your place.
Follow us at @ncec_uk for event updates.
Registration deadline: 5 May 2017
Hazmat 2017 – the premier event of the year for Hazmat professionals.(24 & 25 May, Crowne Plaza, Stratford-upon-Avon)
SPECIALIST ADVICE
HAZMAT
NCEC
2017ANNUALCONFERENCE
+44 (0) 1235 753654
The presentation is approximately
3-4 hours long, depending on
discussion and questions.
We do not charge for this
presentation, but would appreciate
payment of any travel and
subsistence costs incurred.
01235 [email protected]/chemsafe
• A better understanding of the role of
NCEC and its operations.
• A reminder of the Chemsafe scheme
and the role of NCEC within it.
• Improved communications between
the emergency services and NCEC.
• An overview of chemical fatality
incidents.
• An overview of waste fire incidents.
• An outline of the recent changes to
the Globally Harmonized System
of Classification and Labelling of
The objectives of the refresher training are to provide:
Chemicals (GHS) to show the new
labelling and symbols that are likely to
be encountered.
• A look at the value of proportionate
advice in responding to an incident.
The presentation is aimed at hazmat
officers, fire control operators, police
officers. However, we would encourage
the attendance of any others who might
find it useful, for example your local
Environment Agency representative.
Chemsafe EMERGENCY SERVICES REFRESHER TRAINING
Working for chemical andpharmaceu cal businesses
FREE
A S I A P A C I F I C
TEL
(sales and enquiries):
+44 (0) 1235 753654
KEEP IN TOUCHIf you have any comments about
‘The Spill’ or experiences of using
the Chemsafe service that you would
like to share in future issues, please
contact us using the details below.
You can also contact us if you would
like to know more about Chemsafe,
and the other services and products
provided by NCEC.
© R
icar
do
-AE
A 2
017.
NC
EC
/17/
Ap
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V22
New online training modules help fire and rescue service crews prepare for emerging chemical hazards
From fuel-cell combustion and chemical fatalities to clandestine drug laboratories and high-consequence chemicals, NCEC’s new online training modules will help fire and rescue services prepare for the range of emerging and existing chemical hazards encountered in the field.
Developed by NCEC’s team of
trained chemists and emergency
responders as online alternatives
to face-to-face training,
the modules offer essential
information on the underlying
chemistry, reactivity and hazards
of a range of chemicals and
situations; and best practice for
reducing the impact of incidents
when they occur.
They are priced at £25 plus VAT per participant, with discounted rates for groups of over 10 or 20.
For more information on the
complete range of NCEC
training services, please visit
http://the-ncec.com/training
The courses on offer include:
• Asbestos.
• Batteries.
• Chemical and waste fires.
• Chemical fatalities.
• Cleaning products.
• Cylinders in a fire.
• Explosives.
• High risk chemicals: bromine,
titanium tetrachloride,
acrylonitrile and ethylene oxide.
• Hydrogen fluoride safety.
• Hybrid cars.
• Illicit drug laboratories.
• Lithium-ion batteries.
• Mercury spillages.
• Refrigerant gases.
• Pool chemicals.
Help us to help youWe are aware that many of you conduct safety/compliance visits to chemical company premises.
We would appreciate it if you could
remind them that they should register
safety data sheets with the National
Chemical Emergency Centre so that
the Emergency Services can rapidly
access the required information in the
event of an emergency involving one
of their products.
If they would like further information
then please refer them to
The online modules will be available from
February on the Ricardo estore estore.ricardo.com/product-category/
ncec