Continuous Emissions Monitoring Systems

Company History

• Established in 1983 by Steve Read (MD)• Wholly independent company• BS EN ISO 9001-2000 accredited• Turnover approx £6.5m pa• 43 qualified and experienced staff• 1600m2 factory in Stroud, UK• 3 Service Centres in UK, 1 in Ireland, 1 in Qatar• Markets served: UK, Ireland, Middle East, SE

Asia Caspian and Africa

ET Installations Worldwide

EireKilkenny

Stroud

Darlington

Folkestone

Sheerness

Welwyn Garden City

Tamworth

Bedford

Service Locations In UK and Ireland

ET OfficesET Service Centres

ET Supplies environmental monitoring equipment for:

• Ambient Air Quality Monitoring (AQM)• Continuous Emissions Monitoring (CEM)• Stack Testing• Process & Special Gas Monitoring

Continuous Emissions Monitoring (CEM)

ET Provides the following services:

• Application appraisal and site surveys• System design• Project management• Systems integration• Installation, commissioning, training• Tailored service & support contracts

• Modern purpose built head office, training and manufacturing facility.

• Ability to build complete systems and networks indoors

• Conveniently located near M5 and M4 Motorways

• Advanced IT and R&D facilities

Company Information

CEM, MCERTS & AQM TRAINING

Company Information

• Extensive well, equipped service workshop

• Temperature controlled calibration laboratory

• Excellent training facilities

• BS ES ISO 9001 • Investor In People• MCERTS• Working toward ISO

14001• UKAS Registered

OPSIS CEMS ANALYSERS

OPSIS DOAS Technique

DifferentialOptical AbsorptionSpectroscopy

NO2

NO

SO2

CO2

HCl

CONH3

Emitter and Receiver

Emitter

Purge air Purge air

Receiver

Fibre optic cableto analyser

Flue gas

Opsis UV DOAS Technique

Rapid Scanning Device

Opto trigger

Sweep wheelwith 20 slits

Detector window

Current slit

Opsis IR DOAS Technique

Xenon Lamp

Wavelength Intervals

CO

N2OCH4HF

NO,NH3 NO2SO2, CS2

Hg

O3

Cl2, ClO2

BTX,Phenol

Formaldehyde

CO2HClH2O

/nm

/nm

200 400 600

1300 1600 1900 2200 2500

CxHy

AR600

AR650

Spectral Evaluation

The Beer-Lambert LawI = I e2 0

-c l2

Ln(I /I ) = c( – )12 1 1 2

The relationship between the absorbed light and the number of molecules in the path.

Absorbed Light is Directly Propotional to the Concentration

Span and Zero Calibration – CEM

Calibration bench

Analyser

Standard gas

Calibration cell

Powersupply

Receiver

Emitter

Calibration

(Cp x Lp = Cc x Lc)

Cp= Concentration in the measuring path

Lp= Length of the measuring path(/diameter)

Cc= Concentration in the cell (=gasbottle)

Lc= Length of the Calibration Cell

Example: 100 ppb x 500 m = 1000 ppm x 0,05 m

“Optical density”

Typical Opsis CEM layout

Fibre optics

receiveremitter

Signal cables

Schematic of Opsis System

OPSIS System Components

ER060 Transmitter / Receiver with purge air windows.

Receiver OPSIS DOAS Analyser

Benefits of OPSIS CEM Systems

• Cross-duct, non-contact, non-extractive– Gases never come into contact with the analyser– Eliminates any possibility of changing the sample gas

from stack conditions– Fast response

• No sample system of any kind required– Lowest power requirement– No heated sample lines, pumps, filters, condensate

coolers, condensate traps and flow meters• = less parts to go wrong • = higher availability• = lower cost of ownership

CO, SO2 O2

NO, NO2

IR

UV

Probe box with heated

sample filter

Heated sample line

Zero calibration solenoid valve

Gas cooler and condensate drain

condensate alarm

Sample pump

Flowmeters with alarms

NOx converter

Typical Extractive CEM

Disadvantages of Extractive CEM Systems• Out-of-duct, contact, extractive

– Gases are transferred from stack to analyser – There is always the possibility of changing the sample

gas from stack conditions– Slow response

• Complicated sample system is required– High power requirement (heated sample lines)– heated sample lines, pumps, filters, condensate

coolers, condensate traps and flow meters all have a limited life

• = more parts to go wrong • = lower availability• = higher cost of ownership

GRP house

Stack

Emitter Receiver

Opsis solution – low stack platform

Opsis solution – high stack platform

Outlet (before fan)

Inlet (after fan)

2" Insulated Pipe (or tube)

Option:External fan Drainage

Option:Calibration Zero AirFan

Insulated Measure Loop (Opsis part) AC

see drw.D302792

United Utilities Sewage Sludge Incinerator Shell Green

GDF Suez Teesside Power Station

Fast Loop – Opsis SolutionHow would it work in practice ?

• 2” pipe connected at high level

• Pipe insulated against heat loss

• Fast loop acts as stack, but at ground level

• Fan returns stack gas to process or to vent

• No filters, no small bore tubes = no blockages

• Rain or high winds.. Can always be maintained

• SIMPLE !

3-way Auto valve with limit switches

2” pipe, insulated, to be installed by others

Vent

Analyser shelter at ground level

Fast Loop

Circulation Fan

REPORTING SOFTWARE

• Enviro Technology Services is pleased to work in partnership with Envirosoft

• Envirosoft software is WID and LCPD compliant

• Envirosoft have helped write the MCERTS software standard, and can therefore offer compliance when that standard is published

Environmental Reporter – Basic Layout

Environmental Reporter – 4-20mA Output option

ANCILIARY EQUIPMENT

PCME Dust Meter

Sick Flowmeter

M&A FID

PR10 housing for Process Analysers

Special housing for CEMS fast loops and analysers

MAINTENANCE

AND

RELIABILITY

ET service contract details

• 2 scheduled visit p.a. for routine maintenance

– all travel, subsistence and accommodation charges are included

• Lamp changes performed every 6 months

– cost included in contract

• Only chargeable extras are for consumables and for other longer-term wear parts

• QAL3 compliance zero and span checks undertaken

ET service contract details

• Call Out Contract

• Unlimited number of call outs

• Target response time to site is 48 hours from notification

• Excludes bank holidays and weekends

• If spare system and training are taken up, then site will be covered for all eventualities and the need for faster response is removed

ET service contract details

• Telephone Support

• Required modem to be connected

• Normal working hours 9-5 pm, Mon to Friday

• Dedicated line for contract customers to talk to a qualified engineer

• First line diagnostics and we can often direct on-site engineers to the problem area

ET service contract details

• No hidden extras

• Easy to budget

PROCESS ANALYSERS

LD500

Cabinet

EM060L RE060L

Communication cable (< 2 km)

Laser fibre optical cable (< 1 km)

LD500 Fast Response HCl Analyser

LD500 Fast Response HCl Analyser

2 channel system with light splitter

LD500 & Fast DOAS HCl / SO2 Analysers

ETS Reference List - Opsis CEMS systemsCustomer Process No. of Systems

• Knauf Insulation, Queensferry Mineral Wool 1 system• United Utilities, Wigan Sewage Sludge 3 systems• Huntsman Tioxide, Chemical 1 system• Saltend Cogeneration, Hull Gas Turbine 5 systems• Uskmouth Power Station Coal Fired PS 6 systems• Quinn Glass, Elton, Cheshire Container Glass 1 system• ESB, Ireland GT & Coal Fired 10 systems• Hanson Brick, Various sites Brick Kiln 8 systems• Vauxhall Motors, Ellesmere Port Boilers 2 systems• Robinson Brothers, Birmingham Oil Furnace 1 system• Pfizer, Kent Chemical 1 system• Eurocare Clinical Waste 1 system• Kodak Chemical 1 system• Alcan Smelting Aluminium 2 systems• Tetronics Metals 1 systems• Thames Water Sewage Sludge 5 systems• BAe Boilers 1 system• EnviroWales Metals 1 system• RWE Npower Didcot Power 4 systems• RWE Npower Aberthaw Power 3 systems• GDF Suez Teesside Power 9 systems• Lancashire Waste Waste / Recycling 10 systems• Beatson Clark Glass 1 system• Lodge Cottrell / Kazakhstan Power Station 6 systems

Station Name Software or Unit? Hours lost to date % Downtime Call Outs

Aghada Software 00:00 0.0% 0

Unit 00:00 0.0% 2

Great Island Software 00:00 0.0% 1

Unit 10:03 0.1% 1

North Wall Software 00:00 0.0% 0

Unit 00:00 0.0% 0

Marina Software 14:02 0.1% 3

Unit 14:02 0.1% 0

Moneypoint Software 00:00 0.0% 1

Unit 1 00:00 0.0% 0

Unit 2 00:00 0.0% 0

Unit 3 00:00 0.0% 0

Tarbet Software 09:47 0.1% 3

Unit 3 00:00 0.0% 1

Unit 4 00:00 0.0% 0

Poolbeg Software 00:00 0.0% 1

Unit 1 15:56 0.1% 1

Unit 2 00.00 0.0% 0

Unit 3 00.00 0.0% 2

Overall Performance 63.50 0.03% 16

• 7 SITES

• 12 CEMS

• 1 YEARS DATA

ESB

IRELAND

Therefore

Total Hours = 105120

Lost = 40 (0.04%)

Up Time = 99.96%

Note: Lost hours on software are 100% recoverable as the data is backed up on the

analyser

Benefits of ET/OPSIS CEM Systems• All the benefits of the OPSIS DOAS Technique

– Cross-duct, non-contact, non-extractive– No sample system of any kind required– Measure multiple gases over multiple measurement paths with

one analyser– Add additional gases easily and inexpensively– MCERTS Approved NO NO2 SO2 CO H2O

• ET Support– Local Engineers, and more of them than any other vendor– Dedicated Telephone Support– Remote diagnostics available to contract customers

• ET Service – comprehensive and predictable, budget friendly– simple but effective