D Infrastructure and Operation MottMacDonald · takeda grand canal footbridge grifols microsoft clutterland aryzta / cdef ballybane pitch and putt course milltown business and technology

Grange BackUp Power Industrial Emissions Licence Review Application

32

D.1 Operational Information Requirements

D.1.1 Site Location and Environs

The site on which the facility will be located occupies an area of 1.23 hectares and is situated approximately

12 kilometres to the west of Dublin city centre in Grange Castle Business Park, Clondalkin, Dublin 22.

The Business Park has undergone significant change in recent years as previously agricultural lands have

been opened up with access roads and subdivided into plots for high-end industrial and business uses. The

most notable site occupants within the Business Park are Pfizer, Microsoft, Takeda and Aryzta, with further

developments currently under construction for Grifols and Microsoft.

The site of the proposed power station currently consists of mounds of topsoil which was placed on the site

following site clearance works for a previous development in the Business Park. This topsoil will be removed

prior to the start of the construction phase bringing the level of the site to a similar level to the ESB substation

access road which divides the site.

The site is bounded to the north by the existing ESB Grange Castle 110kV Substation; to the east by a

hedgerow; to the south by a Business Park internal road; and to the west by an area of hardstanding.

The nearest residences to the site are located to the north of the Grand Canal, to the south on the R134

Nangor Road, and to the west on the R120. There is also a large housing development, Kilmahuddrick to

the east across the R136. There are no residential properties within approximately 200 metres of the facility

boundary.

The Griffeen River was realigned during the construction of the Business Park and runs northwards

approximately 60 metres from the site. In addition, the Grand Canal is located approximately 140 metres

north of the site running from west to east.

The location of the facility is illustrated on Figure D.1.1 (A) and Figure D.1.1 (B).

D.1.2 Planning History

A planning application for the power plant was submitted to South Dublin County Council in March 2015

(Reference: SD15A/0061). The application was supported by an Environmental Report and a Stage 1

Screening for Appropriate Assessment. Planning permission was granted by South Dublin County Council

in June 2015.

A second planning application was submitted to South Dublin County Council in November 2016

(Reference SD16/0398). This application sought to amend the original permission to take account of the

following: reduction of capacity of the plant from 115MW to 96MW; removal of 1 duel fired engine;

alteration to the operational hours of the facility from 12 hours to 24 hours per day; increase of backup fuel

storage by 895m3; additional Selective Catalytic Reduction (SCR) Tank and increase in height from the

D Infrastructure and Operation


32

D.1 Operational Information Requirements


The site on which the facility will be located occupies an area of 1.23 hectares and is situated approximately

12 kilometres to the west of Dublin city centre in Grange Castle Business Park, Clondalkin, Dublin 22.

The Business Park has undergone significant change in recent years as previously agricultural lands have

been opened up with access roads and subdivided into plots for high-end industrial and business uses. The

most notable site occupants within the Business Park are Pfizer, Microsoft, Takeda and Aryzta, with further

developments currently under construction for Grifols and Microsoft.

The site of the proposed power station currently consists of mounds of topsoil which was placed on the site

following site clearance works for a previous development in the Business Park. This topsoil will be removed

prior to the start of the construction phase bringing the level of the site to a similar level to the ESB substation

access road which divides the site.

The site is bounded to the north by the existing ESB Grange Castle 110kV Substation; to the east by a

hedgerow; to the south by a Business Park internal road; and to the west by an area of hardstanding.

The nearest residences to the site are located to the north of the Grand Canal, to the south on the R134

Nangor Road, and to the west on the R120. There is also a large housing development, Kilmahuddrick to

the east across the R136. There are no residential properties within approximately 200 metres of the facility

boundary.

The Griffeen River was realigned during the construction of the Business Park and runs northwards

approximately 60 metres from the site. In addition, the Grand Canal is located approximately 140 metres

north of the site running from west to east.



A planning application for the power plant was submitted to South Dublin County Council in March 2015

(Reference: SD15A/0061). The application was supported by an Environmental Report and a Stage 1

Screening for Appropriate Assessment. Planning permission was granted by South Dublin County Council

in June 2015.

A second planning application was submitted to South Dublin County Council in November 2016

(Reference SD16/0398). This application sought to amend the original permission to take account of the

following: reduction of capacity of the plant from 115MW to 96MW; removal of 1 duel fired engine;

alteration to the operational hours of the facility from 12 hours to 24 hours per day; increase of backup fuel

storage by 895m3; additional Selective Catalytic Reduction (SCR) Tank and increase in height from the

D Infrastructure and Operation

Grange BackUp PowerMott MacDonald

0.1 Operational Information Requirements


The site on which the facility will be located occupies an area of 1.23 hectares and is situated approximately12 kilometres to the west of Dublin city centre in Grange Castle Business Park, Clondalkin, Dublin 22.

The Business Park has undergone significant change in recent years as previously agricultural lands havebeen opened up with access roads and subdivided into plots for high-end industrial and business uses. Themost notable site occupants within the Business Park are Pfizer, Microsoft, Takeda and Aryzta, with furtherdevelopments currently under construction for Grifols and Microsoft.

The site of the proposed power station currently consists of mounds of topsoil which was placed on the sitefollowing site clearance works for a previous development in the Business Park. This topsoil will be removedprior to the start of the construction phase bringing the level of the site to a similar level to the ESB substationaccess road which divides the site.

The site is bounded to the north by the existing ESB Grange Castle 110kV Substation; to the east by ahedgerow; to the south by a Business Park internal road; and to the west by an area of hardstanding.

The nearest residences to the site are located to the north of the Grand Canal, to the south on the R134Nangor Road, and to the west on the R120. There is also a large housing development, Kilmahuddrick tothe east across the R136. There are no residential properties within approximately 200 metres of the facilityboundary.

The Griffeen River was realigned during the construction of the Business Park and runs northwardsapproximately 60 metres from the site. In addition, the Grand Canal is located approximately 140 metresnorth of the site running from west to east.



A planning application for the power plant was submitted to South Dublin County Council in March 2015(Reference: SD15A/0061). The application was supported by an Environmental Report and a Stage 1Screening for Appropriate Assessment. Planning permission was granted by South Dublin County Councilin June 2015.

A second planning application was submitted to South Dublin County Council in November 2016(Reference SD16/0398). This application sought to amend the original permission to take account of thefollowing: reduction of capacity of the plant from 115MW to 96MW; removal of 1 duel fired engine;alteration to the operational hours of the facility from 12 hours to 24 hours per day; increase of backup fuelstorage by 895m3; additional Selective Catalytic Reduction (SCR) Tank and increase in height from the

32

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SITE LOCATION MAP 1

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P1 29/09/15 SHY For Planning

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Figure D.1.1(A)

Site Location Map

Grange Back Up Power Ltd

Others

S. Healy

M.McCarthy

Others

P.Kelly

1:2500 APR

MMD-349512-N-DR-00-XX-0003

P2 STD

Mott MacDonald

South Block, Rockfield,

Dundrum, Dublin 16,

Ireland

+353 (0)1 2916700

+353 (0)1 2916747

www.mottmac.com

This document is issued for the party which commissioned it and for specific purposes connected with the captioned project only. It should not be relied upon by any other party or used for any other purpose.

We accept no responsibility for the consequences of this document being relied upon by any other party, or being used for any other purpose, or containing any error or omission which is due to an error or omission in data supplied to us by other parties.

Mott MacDonald

GRANGE BACK-UP POWER PLANT FACILITY - SITE LOCATION

1. THIS DRAWING IS TO BE READ IN CONJUNCTION WITH

ALL RELEVANT ARCHITECTS AND ENGINEERS DRAWINGS

AND SPECIFICATIONS.

2. DO NOT SCALE, USE FIGURED DIMENSIONS ONLY.

3. ALL COORDINATES ARE TO OSI NATIONAL GRID.

4. LEVELS ARE IN METRES RELATIVE TO ORDNANCE

SURVEY DATUM MALIN HEAD.

OS MAPPING

1:50000

NORTH

P2 10/03/17 ERN For PlanningMMcC PK

Ordnance Survey Ireland Licence No. EN0034517©Ordnance Survey Ireland/Government of Ireland

125m250m0

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Figure D.1.1(A)

Site Location Map


Others

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M.McCarthy

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P.Kelly

1:2500 APR

MMD-349512-N-DR-00-XX-0003

P2 STD

Mott MacDonald


Dundrum, Dublin 16,

Ireland

+353 (0)1 2916700

+353 (0)1 2916747

www.mottmac.com



Mott MacDonald




AND SPECIFICATIONS.





OS MAPPING

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THIS DRAWING IS TO BE READ IN CONJUNCTION WITHALL RELEVANT ARCHITECTS AND ENGINEERS DRAWINGSAND SPECIFICATIONS.

DO NOT SCALE, USE FIGURED DIMENSIONS ONLY.

ALL COORDINATES ARE TO OSI NATIONAL GRID.

LEVELS ARE IN METRES RELATIVE TO ORDNANCESURVEY DATUM MALIN HEAD.

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Mott MacDonald

Dundrum, Dublin 16,Ireland

T +353 (0)1 2916700F +353(0)12916747w www.mottmac.com

Client

cucky Grange Back Up Power Ltd

GE STLE Figure D.1.1(A)

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M.McCarthy

Others

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1:2500 APR

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P2 STD

Mott MacDonald


Dundrum, Dublin 16,

Ireland

+353 (0)1 2916700

+353 (0)1 2916747

www.mottmac.com



Mott MacDonald




AND SPECIFICATIONS.





OS MAPPING

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S. Healy

M.McCarthy

Others

P.Kelly

1:2500 APR

MMD-349512-N-DR-00-XX-0004

P2 STD

Mott MacDonald


Dundrum, Dublin 16,

Ireland

+353 (0)1 2916700

+353 (0)1 2916747

www.mottmac.com



Mott MacDonald




AND SPECIFICATIONS.





OS MAPPING

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THIS DRAWING IS TO BE READ IN CONJUNCTION WITHALL RELEVANT ARCHITECTS AND ENGINEERS DRAWINGSAND SPECIFICATIONS.

DO NOT SCALE, USE FIGURED DIMENSIONS ONLY.

ALL COORDINATES ARE TO OSI NATIONAL GRID.

LEVELS ARE IN METRES RELATIVE TO ORDNANCESURVEY DATUM MALIN HEAD.

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— GRANGE BACK-UP POWER PLANT FACILITY - SITE LOCATION

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33

approved SCR tank by 4.3m, 2 step-up transformers, gas pressure station skid; alterations to the approved

bund to the west of site; alterations to the approved layout of the tanks in the bund to the west of the site;

realignment of services to the west of the site; increase in storm water attenuation; minor alterations to

proposed landscaping, and all associated site works on a 1.233 hectare site. An Environmental Impact

Statement (EIS) was submitted with this application. Planning permission was granted by South Dublin

County Council in February 2017

It should be noted that Condition No. 2 of SD16A/0398 states that all conditions associated with the

previous permission (SD15A/0061) shall be complied with unless otherwise required in the schedule of

condition for SD16A/0398). For that reason, both planning permissions are referenced in this licence

application, as both are extant.

D.1.3 Overview of Key Plant Processes

The power plant will have a nominal capacity of 96 MW and will generate electricity for export to the national

electricity grid. The plant will be operated as a flexible power plant will have the capability to provide power

to an occupant in Grange Castle Business Park and also to the national grid by supporting high levels of

intermittent wind generation. The plant design will allow for fast flexible operation so that it can be utilised by

the System Operator (ESB Networks) to respond rapidly to voltage or frequency fluctuations on the electricity

grid and provide black start services.

Natural gas, supplied from the Gas Networks Ireland national grid, will be the primary fuel source for the

facility.

In order to comply with Commission for Energy Regulation (CER) regulations low sulphur distillate oil will be

stored as a backup fuel in the event of interruption to the natural gas supply. Up to 72 hours (3 days)

maximum running capacity of distillate is required to be stored on site (approximately 2,895m³) in a bunded

tank. It should be noted that the power plant is expected to operate primarily on natural gas and only in very

rare circumstance on distillate oil in the event of emergency scenarios or an interruption to gas supplies. This

operating requirement is recognised in the grant of planning permission issued by South Dublin County

Council (Planning Register: SD15A/0061) which states under Condition No. 3 that ‘oil fired power generation

shall only be used in the event of emergency operation…and shall not be used for any normal operating

period’. Furthermore Condition No. 8(b) of SD15A/0061 states that ‘emergency generator testing will take

place only once a month between the hours and 09.00 and 17.00 Monday to Friday’ and Condition No. 9(c)

which states ‘in the event of annual testing of the emergency generators for an extended period being

required, such testing will only take place between the hours of 09.00 and 17.00 Monday to Friday’’.

Two transformers will be required on the site. These will step up the voltage of power generated by the power

plant for export to the Electricity National Grid. These transformers will be bunded, fire and blast protected

to both EirGrid and relevant international standards such as National Fire Protection Agency (NFPA) 850.


33

approved SCR tank by 4.3m, 2 step-up transformers, gas pressure station skid; alterations to the approved

bund to the west of site; alterations to the approved layout of the tanks in the bund to the west of the site;

realignment of services to the west of the site; increase in storm water attenuation; minor alterations to

proposed landscaping, and all associated site works on a 1.233 hectare site. An Environmental Impact

Statement (EIS) was submitted with this application. Planning permission was granted by South Dublin

County Council in February 2017

It should be noted that Condition No. 2 of SD16A/0398 states that all conditions associated with the

previous permission (SD15A/0061) shall be complied with unless otherwise required in the schedule of

condition for SD16A/0398). For that reason, both planning permissions are referenced in this licence

application, as both are extant.


The power plant will have a nominal capacity of 96 MW and will generate electricity for export to the national

electricity grid. The plant will be operated as a flexible power plant will have the capability to provide power

to an occupant in Grange Castle Business Park and also to the national grid by supporting high levels of

intermittent wind generation. The plant design will allow for fast flexible operation so that it can be utilised by

the System Operator (ESB Networks) to respond rapidly to voltage or frequency fluctuations on the electricity

grid and provide black start services.

Natural gas, supplied from the Gas Networks Ireland national grid, will be the primary fuel source for the

facility.

In order to comply with Commission for Energy Regulation (CER) regulations low sulphur distillate oil will be

stored as a backup fuel in the event of interruption to the natural gas supply. Up to 72 hours (3 days)

maximum running capacity of distillate is required to be stored on site (approximately 2,895m³) in a bunded

tank. It should be noted that the power plant is expected to operate primarily on natural gas and only in very

rare circumstance on distillate oil in the event of emergency scenarios or an interruption to gas supplies. This

operating requirement is recognised in the grant of planning permission issued by South Dublin County

Council (Planning Register: SD15A/0061) which states under Condition No. 3 that ‘oil fired power generation

shall only be used in the event of emergency operation…and shall not be used for any normal operating

period’. Furthermore Condition No. 8(b) of SD15A/0061 states that ‘emergency generator testing will take

place only once a month between the hours and 09.00 and 17.00 Monday to Friday’ and Condition No. 9(c)

which states ‘in the event of annual testing of the emergency generators for an extended period being

required, such testing will only take place between the hours of 09.00 and 17.00 Monday to Friday’’.

Two transformers will be required on the site. These will step up the voltage of power generated by the power

plant for export to the Electricity National Grid. These transformers will be bunded, fire and blast protected

to both EirGrid and relevant international standards such as National Fire Protection Agency (NFPA) 850.


approved SCR tank by 4.3m, 2 step-up transformers, gas pressure station skid; alterations to the approvedbund to the west of site; alterations to the approved layout of the tanks in the bund to the west of the site;realignment of services to the west of the site; increase in storm water attenuation; minor alterations toproposed landscaping, and all associated site works on a 1.233 hectare site. An Environmental ImpactStatement (EIS) was submitted with this application. Planning permission was granted by South DublinCounty Council in February 2017

It should be noted that Condition No. 2 of SD16A/O398 states that all conditions associated with theprevious permission (SD15A/0061) shall be complied with unless otherwise required in the schedule ofcondition for SD16A/0398). For that reason, both planning permissions are referenced in this licenceapplication, as both are extant.


The power plant will have a nominal capacity of 96 MW and will generate electricity for export to the nationalelectricity grid. The plant will be operated as a flexible power plant will have the capability to provide powerto an occupant in Grange Castle Business Park and also to the national grid by supporting high levels ofintermittent wind generation. The plant design will allow for fast flexible operation so that it can be utilised bythe System Operator (ESB Networks) to respond rapidly to voltage or frequency fluctuations on the electricitygrid and provide black start services.

Natural gas, supplied from the Gas Networks Ireland national grid, will be the primary fuel source for thefacility.

In order to comply with Commission for Energy Regulation (CER) regulations low sulphur distillate oil will bestored as a backup fuel in the event of interruption to the natural gas supply. Up to 72 hours (3 days)maximum running capacity of distillate is required to be stored on site (approximately 2,895m3) in a bundedtank. It should be noted that the power plant is expected to operate primarily on natural gas and only in veryrare circumstance on distillate oil in the event of emergency scenarios or an interruption to gas supplies. Thisoperating requirement is recognised in the grant of planning permission issued by South Dublin CountyCouncil (Planning Register: SD15A/0061) which states under Condition No. 3 that ‘oil firedpowergenerationshall only be used in the event of emergency operation...and shall not be used for any normal operatingperiod’. Furthermore Condition No. 8(b) of SD15A/0061 states that ‘emergency generator testing will takeplace only once a month between the hours and 09.00 and 17.00 Monday to Friday’and Condition No. 9(c)which states ‘in the event of annual testing of the emergency generators for an extended period beingrequired, such testing will only take place between the hours of 09.00 and 17.00 Monday to Friday”.

Two transformers will be required on the site. These will step up the voltage of power generated by the powerplant for export to the Electricity National Grid. These transformers will be bunded, fire and blast protectedto both EirGrid and relevant international standards such as National Fire Protection Agency (NFPA) 850.

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The power plant electrical generator will be connected to the transformer compound to step the voltage up

to 110kV. This will connect to the on-site switchyard, a fenced compound containing electrical switchgear

and circuit breakers.

The electricity will be exported to the national grid via a new 110kV cable to the ESB Grange Castle 110kV

Substation located to the immediate north of the power plant.

The power plant will also be capable of providing power to a nearby occupant in Grange Castle Business

Park. An underground route that will be used for the electrical cabling to connect the power plant to the

occupant. This route will be underground for its full length and has been agreed with South Dublin County

Council, Grange Castle management and its engineers.

The plant is expected to be operational for 25 years.

D.1.4 Power Plant Infrastructure and Equipment

The power plant will comprise the following main components:

� Engine hall comprising:

– 6 no. Wärtsilä 50DF engines;

– 2 no 25 metre Exhaust stacks;

– Compressor Room;

– Store Workshop;

– Low Voltage (LV) Switchgear Room;

– Medium Voltage (MV) Switchgear Room;

– Control Room;

– Coffee Room;

– Toilets;

� Compact Workshop and Warehouse;

� Fuel Oil Storage Tank;

� Fuel Oil Tank Unloading Bay;

� Leak Fuel Tank (clean);

� Leak Fuel Tank (dirty);

� 2 no. SCR Reagent Tanks (Urea);

� Sludge Tank;

� Water Treatment Unit;

� Treated Water Tank;

� Pump House;

� Raw Water and Fire Water Tank;

� Fire Pump Station;

� Pipe Bridge;

� Oily Water Collection Pit;

� Station Transformer;


34

The power plant electrical generator will be connected to the transformer compound to step the voltage up

to 110kV. This will connect to the on-site switchyard, a fenced compound containing electrical switchgear

and circuit breakers.

The electricity will be exported to the national grid via a new 110kV cable to the ESB Grange Castle 110kV

Substation located to the immediate north of the power plant.

The power plant will also be capable of providing power to a nearby occupant in Grange Castle Business

Park. An underground route that will be used for the electrical cabling to connect the power plant to the

occupant. This route will be underground for its full length and has been agreed with South Dublin County

Council, Grange Castle management and its engineers.




� Engine hall comprising:

– 6 no. Wärtsilä 50DF engines;

– 2 no 25 metre Exhaust stacks;

– Compressor Room;

– Store Workshop;

– Low Voltage (LV) Switchgear Room;

– Medium Voltage (MV) Switchgear Room;

– Control Room;

– Coffee Room;

– Toilets;

� Compact Workshop and Warehouse;

� Fuel Oil Storage Tank;

� Fuel Oil Tank Unloading Bay;

� Leak Fuel Tank (clean);

� Leak Fuel Tank (dirty);

� 2 no. SCR Reagent Tanks (Urea);

� Sludge Tank;

� Water Treatment Unit;

� Treated Water Tank;

� Pump House;

� Raw Water and Fire Water Tank;

� Fire Pump Station;

� Pipe Bridge;

� Oily Water Collection Pit;

� Station Transformer;


The power plant electrical generator will be connected to the transformer compound to step the voltage upto 110kV. This will connect to the on-site switchyard, a fenced compound containing electrical switchgearand circuit breakers.

The electricity will be exported to the national grid via a new 110kV cable to the ESB Grange Castle 110kVSubstation located to the immediate north of the power plant.

The power plant will also be capable of providing power to a nearby occupant in Grange Castle BusinessPark. An underground route that will be used for the electrical cabling to connect the power plant to theoccupant. This route will be underground for its full length and has been agreed with South Dublin CountyCouncil, Grange Castle management and its engineers.




Engine hall comprising:6 no. Wértsila 50DF engines;2 no 25 metre Exhaust stacks;Compressor Room;Store Workshop;Low Voltage (LV) Switchgear Room;Medium Voltage (MV) Switchgear Room;Control Room;Coffee Room;Toilets;

Compact Workshop and Warehouse;Fuel Oil Storage Tank;Fuel Oil Tank Unloading Bay;Leak Fuel Tank (clean);Leak Fuel Tank (dirty);2 no. SCR Reagent Tanks (Urea);Sludge Tank;Water Treatment Unit;Treated Water Tank;Pump House;Raw Water and Fire Water Tank;Fire Pump Station;Pipe Bridge;Oily Water Collection Pit;Station Transformer;

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� Block Transformer;

� 2.4 metre high fencing;

� Security Kiosk;

� Car Park.

The layout of the power plant is illustrated in Figure D.1.2 (A) and Figure D.1.2 (B). Engineering drawings

(submitted to South Dublin County Council as part of the planning application for this plant) are also provided

at the end of this section.

D.1.5 Description of Key Plant Processes and Operating Procedures

General

Based on the design characteristics of the Wärtsilä 50DF engine, the power plant can operate on stand-by,

emergency, peak and mid-merit load applications. The engine is a four stroke, dual fuel engine which is

designed for operation either on natural gas with light fuel oil (LFO) as pilot fuel, or on low sulphur distillate

oil, as a back-up fuel only. The Wärtsilä 50DF multi-fuel engines have been selected for the Grange BackUp

Power plant due to:

� High operational efficiency;

� Operational flexibility and reliability;

� Fast starts: 10-minute start from cold to full power;

� Can operate equally well on gas and liquid fuel and switch between them on the run;

� Load following and cycling capabilities; and

� Environmental performance: High efficiency means the plant will produce lower emissions (e.g. Nitrogen

Oxides (NOx), Carbon Monoxide (CO), etc.) to atmosphere per unit of energy produced compared to

similar engines available on the market.

The total electricity output will be 96MW during optimum conditions reaching thermal efficiencies in excess

of approximately 47%, which is higher than any other gas engine available on the market.

Power Generation Process

A site layout plan showing the layout of the principal buildings and plant on site is shown on Figure D.1.2 (A)

& (B). The overall power generation process can be summarised as follows:

1. Gas Operation Mode

In gas operation mode, the engine works according to the lean burn Otto-cycle. In this process the gas-air

mixture is mixed with air before the inlet valves, during the air intake period. After the compression phase,

the gas-air mixture is ignited by a small amount of pilot fuel. The pilot fuel is pressurised, and fed into

cylinders by a small common rail system. The combustion is fast, and after the working phase, the exhaust


35

� Block Transformer;

� 2.4 metre high fencing;

� Security Kiosk;

� Car Park.

The layout of the power plant is illustrated in Figure D.1.2 (A) and Figure D.1.2 (B). Engineering drawings

(submitted to South Dublin County Council as part of the planning application for this plant) are also provided

at the end of this section.


General

Based on the design characteristics of the Wärtsilä 50DF engine, the power plant can operate on stand-by,

emergency, peak and mid-merit load applications. The engine is a four stroke, dual fuel engine which is

designed for operation either on natural gas with light fuel oil (LFO) as pilot fuel, or on low sulphur distillate

oil, as a back-up fuel only. The Wärtsilä 50DF multi-fuel engines have been selected for the Grange BackUp

Power plant due to:

� High operational efficiency;

� Operational flexibility and reliability;

� Fast starts: 10-minute start from cold to full power;

� Can operate equally well on gas and liquid fuel and switch between them on the run;

� Load following and cycling capabilities; and

� Environmental performance: High efficiency means the plant will produce lower emissions (e.g. Nitrogen

Oxides (NOx), Carbon Monoxide (CO), etc.) to atmosphere per unit of energy produced compared to

similar engines available on the market.

The total electricity output will be 96MW during optimum conditions reaching thermal efficiencies in excess

of approximately 47%, which is higher than any other gas engine available on the market.


A site layout plan showing the layout of the principal buildings and plant on site is shown on Figure D.1.2 (A)

& (B). The overall power generation process can be summarised as follows:


In gas operation mode, the engine works according to the lean burn Otto-cycle. In this process the gas-air

mixture is mixed with air before the inlet valves, during the air intake period. After the compression phase,

the gas-air mixture is ignited by a small amount of pilot fuel. The pilot fuel is pressurised, and fed into

cylinders by a small common rail system. The combustion is fast, and after the working phase, the exhaust


Block Transformer;2.4 metre high fencing;Security Kiosk;Car Park.

The layout of the power plant is illustrated in Figure D.1.2 (A) and Figure D.1.2 (B). Engineering drawings(submitted to South Dublin County Council as part of the planning application for this plant) are also providedat the end of this section.


General

Based on the design characteristics of the Wértsila 50DF engine, the power plant can operate on stand-by,emergency, peak and mid-merit load applications. The engine is a four stroke, dual fuel engine which isdesigned for operation either on natural gas with light fuel oil (LFO) as pilot fuel, or on low sulphur distillateoil, as a back-up fuel only. The Wértsila 50DF multi-fuel engines have been selected for the Grange BackUpPower plant due to:

High operational efficiency;Operational flexibility and reliability;Fast starts: 10-minute start from cold to full power;Can operate equally well on gas and liquid fuel and switch between them on the run;Load following and cycling capabilities; andEnvironmental performance: High efficiency means the plant will produce lower emissions (e.g. NitrogenOxides (NOX), Carbon Monoxide (CO), etc.) to atmosphere per unit of energy produced compared tosimilar engines available on the market.

The total electricity output will be 96MW during optimum conditions reaching thermal efficiencies in excessof approximately 47%, which is higher than any other gas engine available on the market.


A site layout plan showing the layout of the principal buildings and plant on site is shown on Figure D.1.2 (A)& (B). The overall power generation process can be summarised as follows:


ln gas operation mode, the engine works according to the lean burn Otto-cycle. In this process the gas-airmixture is mixed with air before the inlet valves, during the air intake period. After the compression phase,the gas-air mixture is ignited by a small amount of pilot fuel. The pilot fuel is pressurised, and fed intocylinders by a small common rail system. The combustion is fast, and after the working phase, the exhaust

35

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Reference drawings

Security

P:\Dublin\MPD\349512 - Grange Power\CAD\Drawings\Figure D.1.2(A)_P2.dwg Mar 16, 2017 - 9:40AM ric66327

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©

Figure D.1.2 (A)

Site Layout

Plan View


Others

S. Healy

M.McCarthy

Others

P.Kellly

1:200 APR

MMD-349512-N-DR-00-XX-0005

P2 STD

Mott MacDonald


Dundrum, Dublin 16,

Ireland

+353 (0)1 2916700

+353 (0)1 2916747

www.mottmac.com



Mott MacDonald

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3. ANY DISCREPANCIES TO BE REPORTED TO THE

ARCHITECT.

4. ALL DIMENSIONS ARE IN MILLIMETERS.

5. ALL LEVELS ARE IN METRES RELATIVE TO ORDNANCE


26

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P2 10/03/17 ERN For Planning

MMcC PK

28

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³ SURFACE WATER ATTENUATION TANK

³

IED APPLICATION SITE BOUNDARY

ENGINE HALL - ROOF PLAN

ANCILLIARY TANKS, PLANT, EQUIPMENT AND BUILDINGS

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Figure D.1.2 (A)

Site Layout

Plan View


Others

S. Healy

M.McCarthy

Others

P.Kellly

1:200 APR

MMD-349512-N-DR-00-XX-0005

P2 STD

Mott MacDonald


Dundrum, Dublin 16,

Ireland

+353 (0)1 2916700

+353 (0)1 2916747

www.mottmac.com



Mott MacDonald

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1. THIS DRAWING IS TO BE READ IN CONJUNCTION WITHALL RELEVANT ARCHITECTS AND ENGINEERS DRAWINGSAND SPECIFICATIONS.


3. ANY DISCREPANCIES TO BE REPORTED TO THEARCHITECT.


5. ALL LEVELS ARE IN METRES RELATIVE TO ORDNANCESURVEY DATUM MALIN HEAD.

Key to symbols

- I - I - I - IED APPLICATION SITE BOUNDARY


EXISTING ESB MAINENTRANCE TO RETAIN.—\

\ ANCILLIARY TANKS, PLANT, EQUIPMENT AND BUILDINGST._=_=_=_@==_-_=_=_=___=_=_=__:R=_F‘ —=—-=..==__.=_.=._=-__._

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REGENT 2400mm HIGH SECURITY KIOSKEXTERNAL FACTORYTANK PALISADE METAL RENDER WITH GROVESFENCING. TO BE OIL UNLOADING BAYON INSULATEDPAINTED IN DARK.__GREEN COLOR. PRECAST CONCRETE

PANELS WITH SLUDGE TANKII C) SELECTED COLOR.

RAW / FIRE Q DISTILLATE OIL STORAGE TANKWATER TANK OIL ENGINE HALL

2400mm HIGH BUNDBRIE III/I STORAGE I IPAINTED. IN DARK u TANK RESGCERNT PIPE ROUTE

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T +353 (0)1 2916700Mott Macponald F +353(0)12916747

w www.mottmac.com

EXISTING INDUSTRIAL ClientESTATE ENTRANCE ROAD


Title

Figure D.1.2 (A)

Site LayoutPlan View



Dwg check M.McCarthy Approved P.KeIIIy


1:200 APR P2 STD© Mott MacDonald

Drawing NumberThis document is issued for the party which commissioned it and for specific purposes connected with the captioned project only. It should not be relied upon by any other party or used for any other purpose. M M D-349512-N-D R-OO-XX-0005We accept no responsibility for the consequences of this document being relied upon by any other party, or being used for any other purpose, or containing any error or omission which is due to an error or omission in data supplied to us by other parties.

P:\Dub|in\MPD\349512 - Grange Power\CAD\Drawings\Figure D.1.2(A)_P2.dwg Mar 16, 2017 - 9:40AM ri066327

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GROUND FLOOR LAYOUT PLAN

ENGINE HALL:FIRST FLOOR LAYOUT


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TFW

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Figure D.1.2 (B)

Site Layout

(Internal View of Engine Hall)


Others

S. Healy

M.McCarthy

Others

P.Kellly

1:200 APR

MMD-349512-N-DR-00-XX-0006

P2 STD

Mott MacDonald


Dundrum, Dublin 16,

Ireland

+353 (0)1 2916700

+353 (0)1 2916747

www.mottmac.com



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Client

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Security


TFW

©

Figure D.1.2 (B)

Site Layout

(Internal View of Engine Hall)


Others

S. Healy

M.McCarthy

Others

P.Kellly

1:200 APR

MMD-349512-N-DR-00-XX-0006

P2 STD

Mott MacDonald


Dundrum, Dublin 16,

Ireland

+353 (0)1 2916700

+353 (0)1 2916747

www.mottmac.com



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1. THIS DRAWING IS TO BE READ IN CONJUNCTION WITHALL RELEVANT ARCHITECTS AND ENGINEERS DRAWINGSAND SPECIFICATIONS.


3. ANY DISCREPANCIES TO BE REPORTED TO THEARCHITECT.


5. ALL LEVELS ARE IN METRES RELATIVE TO ORDNANCESURVEY DATUM MALIN HEAD.

Key to symbols

- I - I - I - IED APPLICATION SITE BOUNDARY8o w00 ENGINE HALL - INTERNAL VIEW

EXISTING ESB MAINENTRANCE To RETAIN.

\ H ANCILLIARY TANKS, PLANT, EQUIPMENT AND BUILDINGS

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34

CONTROL PIT

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P1 29/09/15 SHY For Planning MMcC PK24OOMM HIGHFENCING AROUND 0 Rev Date Drawn Description Ch’k’d App’dBOUNDARY LINE. — 0 w

8EXISTING INDUSTRIAL Mott MacDonaldESTATE EXIT ROAD South Block, Rockfield,


T +353 (0)1 2916700Mott Macponald F +353(0)12916747

w www.mottmac.com

EXISTING INDUSTRIAL ClientESTATE ENTRANCE ROAD


Title

$599!? FLOOR LAYOUT PLAN Figure D.1.2 (B)Site Layout(Internal View of Engine Hall)



Dwg check M.McCarthy Approved P.KeIIIy


© Mott MacDonald 1:200 APR P2 STDDrawing Number

This document is issued for the party which commissioned it and for specific purposes connected with the captioned project only. It should not be relied upon by any other party or used for any other purpose.We accept no responsibility for the consequences of this document being relied upon by any other party, or being used for any other purpose, or containing any error or omission which is due to an error or omission in data supplied to us by other parties. M M D'3495 1 2'N 'D R'OO'XX'O006

P:\Dub|in\MPD\349512 - Grange Power\CAD\Drawings\Figure D.1.2(B)_P2.dwg Mar 15, 2017 - 4:31 PM ri066327

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36

gas valves open, and the cylinder is emptied of exhaust gases. The intake air is turbocharged and

intercooled.

When the engine is started in gas mode, it is started with pilot fuel injection only, without gas admission.

When the combustion is stabilized in every cylinder, the gas admission is activated.

2. Back-up Operation Mode

In back-up fuel operation mode, the engine works according to the low sulphur distillate oil process. In this

process, the liquid fuel is injected in the cylinder at high pressure by camshaft operated pumps. The fuel is

ignited instantly due to the high temperature resulting from the compression. Combustion takes place under

constant pressure with fuel injected into the cylinder during the combustion. After the working phase, the

exhaust gas valves open, and the cylinder is emptied of exhaust gases.


36

gas valves open, and the cylinder is emptied of exhaust gases. The intake air is turbocharged and

intercooled.

When the engine is started in gas mode, it is started with pilot fuel injection only, without gas admission.

When the combustion is stabilized in every cylinder, the gas admission is activated.


In back-up fuel operation mode, the engine works according to the low sulphur distillate oil process. In this

process, the liquid fuel is injected in the cylinder at high pressure by camshaft operated pumps. The fuel is

ignited instantly due to the high temperature resulting from the compression. Combustion takes place under

constant pressure with fuel injected into the cylinder during the combustion. After the working phase, the

exhaust gas valves open, and the cylinder is emptied of exhaust gases.


gas valves open, and the cylinder is emptied of exhaust gases. The intake air is turbocharged andintercooled.

When the engine is started in gas mode, it is started with pilot fuel injection only, without gas admission.When the combustion is stabilized in every cylinder, the gas admission is activated.

INJECTION VALVESH=i+Control E _. d

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PILOT FUEL PUMP UNIT

FUELTANK

WM"?! 500': as a pure gas englne Wlln pilot only, avallable for power plant Installations.


ln back-up fuel operation mode, the engine works according to the low sulphur distillate oil process. In thisprocess, the liquid fuel is injected in the cylinder at high pressure by camshaft operated pumps. The fuel isignited instantly due to the high temperature resulting from the compression. Combustion takes place underconstant pressure with fuel injected into the cylinder during the combustion. After the working phase, theexhaust gas valves open, and the cylinder is emptied of exhaust gases.

36

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37

3. Turbocharger and Air to Fuel Ratio Control System

Due to the high degree of integrated functions built into the design of the Wärtsilä 50DF engine, only a

minimum amount of support from external systems is needed, thus minimising the interconnections to

external systems. An embedded engine control system controls the combustion process, individually in each

cylinder.

To maintain a correct air-fuel ratio, the engine is equipped with an exhaust gas wastegate. It keeps the air

pressure in the receiver at an optimal level all over the power output range.

The exhaust gas wastegate valve by-passes the exhaust gases past the turbocharger. The wastegate valve

works as a regulator and adjusts the air-fuel ratio to the correct value, independent of variations in the site

conditions, such as ambient temperature and humidity.

The engine automation system monitors the average exhaust gas temperature after the cylinders. If the

average exhaust gas temperature is higher than the set-point, the engine control system will close the

wastegate gradually, until the correct value is reached.

The wastegate valve is actuated by compressed air and controlled by the engine control system.

4. Automation


37


Due to the high degree of integrated functions built into the design of the Wärtsilä 50DF engine, only a

minimum amount of support from external systems is needed, thus minimising the interconnections to

external systems. An embedded engine control system controls the combustion process, individually in each

cylinder.

To maintain a correct air-fuel ratio, the engine is equipped with an exhaust gas wastegate. It keeps the air

pressure in the receiver at an optimal level all over the power output range.

The exhaust gas wastegate valve by-passes the exhaust gases past the turbocharger. The wastegate valve

works as a regulator and adjusts the air-fuel ratio to the correct value, independent of variations in the site

conditions, such as ambient temperature and humidity.

The engine automation system monitors the average exhaust gas temperature after the cylinders. If the

average exhaust gas temperature is higher than the set-point, the engine control system will close the

wastegate gradually, until the correct value is reached.


4. Automation


FUEL INJECTION PUMPS FORLIOUID FUEL OPERATION INJECTION VALVES

RETURN FUEL

Control (I: _. a—.- — LU, system I E a

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i ia i .i ' 'i PILOT FUEL PUMP UNIT :

MAIN FUEL TANK PILOT FUEL TANKLFO or HFO LFO

wartslla 50DF fuel all system for light fuel and heavy fuel oil.


Due to the high degree of integrated functions built into the design of the Wértsilé 50DF engine, only aminimum amount of support from external systems is needed, thus minimising the interconnections toexternal systems. An embedded engine control system controls the combustion process, individually in eachcylinder.

To maintain a correct air-fuel ratio, the engine is equipped with an exhaust gas wastegate. It keeps the airpressure in the receiver at an optimal level all over the power output range.

The exhaust gas wastegate valve by-passes the exhaust gases past the turbocharger. The wastegate valveworks as a regulator and adjusts the air-fuel ratio to the correct value, independent of variations in the siteconditions, such as ambient temperature and humidity.

The engine automation system monitors the average exhaust gas temperature after the cylinders. If theaverage exhaust gas temperature is higher than the set-point, the engine control system will close thewastegate gradually, until the correct value is reached.


4. Automation

37

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38

The engine automation system is a complete embedded management system, integrated with an engine

control system for electronically controlled fuel injection. The engine control system is a distributed and bus

based system where the monitoring and control function is placed close to the point of measurement and

control. In this way, both the on and off engine wiring is significantly simplified. Advanced diagnostics and

control functions provide an outstanding performance, and the need for systems outside the engine is

significantly reduced.

For the field bus interconnection, Wärtsilä is committed to open standards. The physical interface of the

engine control system is a standard Ethernet connection for general process data, to both the WOIS and the

PLC systems. The system meets even the highest requirements on reliability, with selective redundancy and

fault tolerant design.

5. Emission Control System

The most commonly used secondary emission control method for NOX is the Selective Catalytic Reduction

(SCR) technique. In the SCR system the NOX (NO and NO2) are reduced with the help of a reducing agent,

a water solution of urea which will be stored in 2 no. dedicated tanks with a volume of 177m³. SCR does not

produce any liquid or solid by-products and is suitable for both liquid and gaseous fuels.

The SCR NOX abatement system is combined with an oxidation catalyst and is named Combined NOX and

CO control system.

The exhaust gases from the gas engines will be at a high temperature in excess of 360°C, and will be

discharged to atmosphere through 2 no. 25 metre high stacks.

Gas Supply

Grange Castle Business Park is fully serviced with natural gas so a connection will be made to this existing

natural gas infrastructure within the Business Park to the south of the site.

Low Sulphur Distillate Oil Supply and Storage

The power plant is expected to operate primarily on natural gas and only in very rare circumstance on

distillate oil in the event of emergency scenarios or an interruption to gas supplies.

Low sulphur distillate fuel will be delivered to site by road tankers. The maximum number of tankers expected

travelling to and from the site in any one day will be in the region of 2- 3 tankers, when the plant is in

continuous operation.

Distillate fuel will be stored in a dedicated tank in the northwest of the site with a capacity of 2,895m³ to allow

for the storage of enough fuel to accommodate three days of continuous operation in accordance with CER

requirements. The tank will be bunded in accordance with the requirements as set out in the EPA publication,

‘Storage and Transfer of Materials for Scheduled Activities’ (2004).to contain 110% of the volume of the tank

in the event of a tank rupture. The height of the bund wall will be 2.1 metres.


38

The engine automation system is a complete embedded management system, integrated with an engine

control system for electronically controlled fuel injection. The engine control system is a distributed and bus

based system where the monitoring and control function is placed close to the point of measurement and

control. In this way, both the on and off engine wiring is significantly simplified. Advanced diagnostics and

control functions provide an outstanding performance, and the need for systems outside the engine is

significantly reduced.

For the field bus interconnection, Wärtsilä is committed to open standards. The physical interface of the

engine control system is a standard Ethernet connection for general process data, to both the WOIS and the

PLC systems. The system meets even the highest requirements on reliability, with selective redundancy and

fault tolerant design.


The most commonly used secondary emission control method for NOX is the Selective Catalytic Reduction

(SCR) technique. In the SCR system the NOX (NO and NO2) are reduced with the help of a reducing agent,

a water solution of urea which will be stored in 2 no. dedicated tanks with a volume of 177m³. SCR does not

produce any liquid or solid by-products and is suitable for both liquid and gaseous fuels.

The SCR NOX abatement system is combined with an oxidation catalyst and is named Combined NOX and

CO control system.

The exhaust gases from the gas engines will be at a high temperature in excess of 360°C, and will be

discharged to atmosphere through 2 no. 25 metre high stacks.

Gas Supply

Grange Castle Business Park is fully serviced with natural gas so a connection will be made to this existing

natural gas infrastructure within the Business Park to the south of the site.


The power plant is expected to operate primarily on natural gas and only in very rare circumstance on

distillate oil in the event of emergency scenarios or an interruption to gas supplies.

Low sulphur distillate fuel will be delivered to site by road tankers. The maximum number of tankers expected

travelling to and from the site in any one day will be in the region of 2- 3 tankers, when the plant is in

continuous operation.

Distillate fuel will be stored in a dedicated tank in the northwest of the site with a capacity of 2,895m³ to allow

for the storage of enough fuel to accommodate three days of continuous operation in accordance with CER

requirements. The tank will be bunded in accordance with the requirements as set out in the EPA publication,

‘Storage and Transfer of Materials for Scheduled Activities’ (2004).to contain 110% of the volume of the tank

in the event of a tank rupture. The height of the bund wall will be 2.1 metres.


The engine automation system is a complete embedded management system, integrated with an enginecontrol system for electronically controlled fuel injection. The engine control system is a distributed and busbased system where the monitoring and control function is placed close to the point of measurement andcontrol. In this way, both the on and off engine wiring is significantly simplified. Advanced diagnostics andcontrol functions provide an outstanding performance, and the need for systems outside the engine issignificantly reduced.

For the field bus interconnection, Wértsilé is committed to open standards. The physical interface of theengine control system is a standard Ethernet connection for general process data, to both the WOIS and thePLC systems. The system meets even the highest requirements on reliability, with selective redundancy andfault tolerant design.


The most commonly used secondary emission control method for NOX is the Selective Catalytic Reduction(SCR) technique. In the SCR system the NOX (NO and N02) are reduced with the help of a reducing agent,a water solution of urea which will be stored in 2 no. dedicated tanks with a volume of 177m3. SCR does notproduce any liquid or solid by-products and is suitable for both liquid and gaseous fuels.

The SCR NOX abatement system is combined with an oxidation catalyst and is named Combined NOx andCO control system.

The exhaust gases from the gas engines will be at a high temperature in excess of 360°C, and will bedischarged to atmosphere through 2 no. 25 metre high stacks.

Gas Supply

Grange Castle Business Park is fully serviced with natural gas so a connection will be made to this existingnatural gas infrastructure within the Business Park to the south of the site.


The power plant is expected to operate primarily on natural gas and only in very rare circumstance ondistillate oil in the event of emergency scenarios or an interruption to gas supplies.

Low sulphur distillate fuel will be delivered to site by road tankers. The maximum number of tankers expectedtravelling to and from the site in any one day will be in the region of 2— 3 tankers, when the plant is incontinuous operation.

Distillate fuel will be stored in a dedicated tank in the northwest of the site with a capacity of 2,895m3to allowfor the storage of enough fuel to accommodate three days of continuous operation in accordance with CERrequirements. The tank will be bunded in accordance with the requirements as set out in the EPA publication,‘Storage and Transfer of Materials for Scheduled Activities’ (2004).to contain 1 10% of the volume of the tankin the event of a tank rupture. The height of the bund wall will be 2.1 metres.

38

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A standard operating procedure will be followed during tanker unloading and filling of the bulk tank and the

tank will be fitted with a high level alarm to prevent overfilling. There will be a dedicated tanker unloading

area surrounded by a drainage channel, which will drain to a Class 1 Enviroceptor. This separator will provide

for full retention of any material in the event of the complete rupture and spillage of a tanker compartment.

A shut-off device incorporated into the separator will close the outlet in the event of its capacity being

exceeded. All oil transfer lines will be over ground and accessible for inspection.

The distillate fuel will be transported from the oil tank to the engines in the east portion of the site through

appropriately designed pipes. A pipe rack will be constructed across the ESB Grange Castle 110kV

Substation access road to support the pipes as they pass over the road. The piperack will be constructed at

a height of approximately 6.5 metres to the underside of the rack, which is greater than the minimum height

of 5.7 metres as stated in the National Roads Authority (NRA) ‘Design Manual for Roads and Bridges’.

Heat Recovery

There has been no provision made for heat recovery because of the intermittent operating nature of the

anticipated power plant operations. The power plant layout has been optimised to accommodate heat

recovery in the future should it be required; however it would require the installation of some piping, pumps,

heat exchangers etc.

Water Supply and Treatment

The principal water usage requirements of the power plant can be summarised as follows:

� Potable water ca. 1m³/day used for domestic purposes (drinking water, toilets etc.);

� Water for injection to control NOx formation during the combustion process; and

� Water for fire-fighting purposes.

A supply of potable water for the site will be taken from the existing 200mm diameter water main which runs

under the main Business Park road to the south of the site. The total volume of water required for process

and potable purposes is less than 1m3/hr2. Mains water will be passed through a water treatment unit that

will filter the water to provide pure water for the process. This treated water will be stored in a dedicated

treated water tank with a volume of 500m³ before being pumped around the site as required.

Site Drainage: Surface Water Management

The surface water drainage system will connect to the existing Grange Castle Business Park surface water

drainage system to the south of the proposed site in two locations – one location will take the surface water

2 The process water demand from the public water mains is 0.822m3/hr. The potable water demand is <1m3/day.


39

A standard operating procedure will be followed during tanker unloading and filling of the bulk tank and the

tank will be fitted with a high level alarm to prevent overfilling. There will be a dedicated tanker unloading

area surrounded by a drainage channel, which will drain to a Class 1 Enviroceptor. This separator will provide

for full retention of any material in the event of the complete rupture and spillage of a tanker compartment.

A shut-off device incorporated into the separator will close the outlet in the event of its capacity being

exceeded. All oil transfer lines will be over ground and accessible for inspection.

The distillate fuel will be transported from the oil tank to the engines in the east portion of the site through

appropriately designed pipes. A pipe rack will be constructed across the ESB Grange Castle 110kV

Substation access road to support the pipes as they pass over the road. The piperack will be constructed at

a height of approximately 6.5 metres to the underside of the rack, which is greater than the minimum height

of 5.7 metres as stated in the National Roads Authority (NRA) ‘Design Manual for Roads and Bridges’.

Heat Recovery

There has been no provision made for heat recovery because of the intermittent operating nature of the

anticipated power plant operations. The power plant layout has been optimised to accommodate heat

recovery in the future should it be required; however it would require the installation of some piping, pumps,

heat exchangers etc.



� Potable water ca. 1m³/day used for domestic purposes (drinking water, toilets etc.);

� Water for injection to control NOx formation during the combustion process; and

� Water for fire-fighting purposes.

A supply of potable water for the site will be taken from the existing 200mm diameter water main which runs

under the main Business Park road to the south of the site. The total volume of water required for process

and potable purposes is less than 1m3/hr2. Mains water will be passed through a water treatment unit that

will filter the water to provide pure water for the process. This treated water will be stored in a dedicated

treated water tank with a volume of 500m³ before being pumped around the site as required.


The surface water drainage system will connect to the existing Grange Castle Business Park surface water

drainage system to the south of the proposed site in two locations – one location will take the surface water

2 The process water demand from the public water mains is 0.822m3/hr. The potable water demand is <1m3/day.


A standard operating procedure will be followed during tanker unloading and filling of the bulk tank and thetank will be fitted with a high level alarm to prevent overfilling. There will be a dedicated tanker unloadingarea surrounded by a drainage channel, which will drain to a Class 1 Enviroceptor. This separator will providefor full retention of any material in the event of the complete rupture and spillage of a tanker compartment.A shut-off device incorporated into the separator will close the outlet in the event of its capacity beingexceeded. All oil transfer lines will be over ground and accessible for inspection.

The distillate fuel will be transported from the oil tank to the engines in the east portion of the site throughappropriately designed pipes. A pipe rack will be constructed across the ESB Grange Castle 110kVSubstation access road to support the pipes as they pass over the road. The piperack will be constructed ata height of approximately 6.5 metres to the underside of the rack, which is greater than the minimum heightof 5.7 metres as stated in the National Roads Authority (NRA) ‘Design Manual for Roads and Bridges’.

Heat Recovery

There has been no provision made for heat recovery because of the intermittent operating nature of theanticipated power plant operations. The power plant layout has been optimised to accommodate heatrecovery in the future should it be required; however it would require the installation of some piping, pumps,heat exchangers etc.



Potable water ca. 1m3/day used for domestic purposes (drinking water, toilets etc.);Water for injection to control NO. formation during the combustion process; andWater for fire-fighting purposes.

A supply of potable water for the site will be taken from the existing 200mm diameter water main which runsunder the main Business Park road to the south of the site. The total volume of water required for processand potable purposes is less than 1m3/hr2. Mains water will be passed through a water treatment unit thatwill filter the water to provide pure water for the process. This treated water will be stored in a dedicatedtreated water tank with a volume of 500m3 before being pumped around the site as required.


The surface water drainage system will connect to the existing Grange Castle Business Park surface waterdrainage system to the south of the proposed site in two locations — one location will take the surface water

39

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generated on the west side of the site, while the other location will take the surface water generated on the

east side of the site. The surface water drainage system on site is illustrated on Figure E.3.1

All surface water generated on site will ultimately discharge to an attenuation pond to the north east of the

Business Park. It should be noted also in this respect that no development on site shall commence until

such time as a Connection Agreement has been signed with Irish Water [SD16A/0398 Planning

Permission Note No. 3] and proposals for surface water monitoring have been with South Dublin County

Council and Inland Fisheries Ireland [SD15A/0061 Planning Permission Note Planning Condition No. 9].

Site Drainage: Foul and Process Wastewater Management

Foul wastewater from the power plant will consist of domestic effluent from the toilets, sinks, etc. on-site.

The amount of foul wastewater will be minimal due to the low requirement for personnel onsite during the

operational phase. This wastewater will be discharged from the site via an appropriately sized pipe and will

connect to the existing foul sewer network in Grange Castle Business Park to the south east (which ultimately

connects to the surrounding area foul sewage system which is treated in the Ringsend Wastewater

Treatment Plant).

Process wastewater to be generated by the facility will consist of the waste stream arising from the treatment

of purified water for injection into the engine during the combustion process to control NOx emissions. This

wastewater will have a volume of approximately 0.5m3/hr as indicated in the schematic over.

The foul and process wastewater drainage system on site is illustrated on Figure E.4.1


40

generated on the west side of the site, while the other location will take the surface water generated on the

east side of the site. The surface water drainage system on site is illustrated on Figure E.3.1

All surface water generated on site will ultimately discharge to an attenuation pond to the north east of the

Business Park. It should be noted also in this respect that no development on site shall commence until

such time as a Connection Agreement has been signed with Irish Water [SD16A/0398 Planning

Permission Note No. 3] and proposals for surface water monitoring have been with South Dublin County

Council and Inland Fisheries Ireland [SD15A/0061 Planning Permission Note Planning Condition No. 9].


Foul wastewater from the power plant will consist of domestic effluent from the toilets, sinks, etc. on-site.

The amount of foul wastewater will be minimal due to the low requirement for personnel onsite during the

operational phase. This wastewater will be discharged from the site via an appropriately sized pipe and will

connect to the existing foul sewer network in Grange Castle Business Park to the south east (which ultimately

connects to the surrounding area foul sewage system which is treated in the Ringsend Wastewater

Treatment Plant).

Process wastewater to be generated by the facility will consist of the waste stream arising from the treatment

of purified water for injection into the engine during the combustion process to control NOx emissions. This

wastewater will have a volume of approximately 0.5m3/hr as indicated in the schematic over.



generated on the west side of the site, while the other location will take the surface water generated on theeast side of the site. The surface water drainage system on site is illustrated on Figure E.3.1

All surface water generated on site will ultimately discharge to an attenuation pond to the north east of theBusiness Park. It should be noted also in this respect that no development on site shall commence untilsuch time as a Connection Agreement has been signed with Irish Water [SD16A/0398 PlanningPermission Note No. 3] and proposals for surface water monitoring have been with South Dublin CountyCouncil and Inland Fisheries Ireland [SD15A/0061 Planning Permission Note Planning Condition No. 9].


Foul wastewater from the power plant will consist of domestic effluent from the toilets, sinks, etc. on-site.The amount of foul wastewater will be minimal due to the low requirement for personnel onsite during theoperational phase. This wastewater will be discharged from the site via an appropriately sized pipe and willconnect to the existing foul sewer network in Grange Castle Business Park to the south east (which ultimatelyconnects to the surrounding area foul sewage system which is treated in the Ringsend WastewaterTreatment Plant).

Process wastewater to be generated by the facility will consist of the waste stream arising from the treatmentof purified water for injection into the engine during the combustion process to control NOx emissions. Thiswastewater will have a volume of approximately 0.5m3/hr as indicated in the schematic over.


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Schematic D.1: Process Wastewater Requirements and Waste Stream

Leak Fuel Tank (clean)

Clean leak fuel is drained by gravity from the engine. The fuel is collected in a separate clean leak fuel

tank, from where it can be pumped to the main distillate fuel tank and reused without separation. The tank

and the pipes will be heated and insulated. The leak fuel piping will be fully closed to prevent dirt from

entering the system.


41



Clean leak fuel is drained by gravity from the engine. The fuel is collected in a separate clean leak fuel

tank, from where it can be pumped to the main distillate fuel tank and reused without separation. The tank

and the pipes will be heated and insulated. The leak fuel piping will be fully closed to prevent dirt from

entering the system.

Grange BackUp PowerIndustrial Emissions Licence Review Application



Mott MacDonald

0.822 "1"3/h

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Treatment > SE1

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Clean leak fuel is drained by gravity from the engine. The fuel is collected in a separate clean leak fueltank, from where it can be pumped to the main distillate fuel tank and reused without separation. The tankand the pipes will be heated and insulated. The leak fuel piping will be fully closed to prevent dirt fromentering the system.

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42

Leak Fuel Tank (dirty)

In normal operation no fuel will leak out from the components of the fuel system. However in connection

with maintenance, or due to unforeseen leaks, there is potential for fuel or water to spill in the hot box of

the engine. The spilled liquids will be collected and drained by gravity from the engine through the dirty fuel

connection. Dirty leak fuel will be led to a sludge tank.

Fire-Fighting System

The fire-fighting protection system philosophy is based on widely recognized National Fire Protection

Association (NFPA) standards. Piping and equipment may still follow standards used by the fire protection

equipment supplier.

The stand pipe system inside the engine hall follows ‘NFPA14 class II stand pipe system’ requirements.

Additionally, mobile foam units will be provided. For immediate action against small local fires, the power

house is equipped with a number of powder extinguishers at strategic locations, and CO2 extinguishers for

electrical fires (spacing as per NFPA10). The fire main will be built using the design guideline ‘NFPA24

Private fire service main’.

The firefighting pump will operate on diesel. The pump will be located within the fire pump house. The pump

will only be used in an emergency and for short duration testing, for a maximum of 30 minutes once a week.

The pump will have an electrical output of less than 100 kW.

The tank area design is based on NFPA30, with the safety distances and cooling water streams spaced for

exposure protection.

Administration Area

The administration area will be located within the main building on the eastern portion of the site, adjacent

to the engine hall on its western side. This administration area will be located on the first floor of this building

and will comprise a meeting room, a manager’s room, a kitchen area and toilet facilities.

Electrical Area

The electrical area will be located within the main building on the eastern portion of the site, adjacent to the

engine hall on its western side. This administration area will be located on the ground floor of this building

and will comprise a control room, an MV (medium voltage)-switchgear, an LV (low voltage)-switchgear and

a DC (direct current)-system.

The power plant will be self-sufficient in providing electricity to power the various facilities, equipment and

utilities on site. During plant downtime (e.g. plant maintenance) a feed will be taken from the existing ESB

network serving Grange Castle Business Park. It is expected that there will be adequate capacity in the grid

to accommodate this demand during plant downtime.


42


In normal operation no fuel will leak out from the components of the fuel system. However in connection

with maintenance, or due to unforeseen leaks, there is potential for fuel or water to spill in the hot box of

the engine. The spilled liquids will be collected and drained by gravity from the engine through the dirty fuel

connection. Dirty leak fuel will be led to a sludge tank.


The fire-fighting protection system philosophy is based on widely recognized National Fire Protection

Association (NFPA) standards. Piping and equipment may still follow standards used by the fire protection

equipment supplier.

The stand pipe system inside the engine hall follows ‘NFPA14 class II stand pipe system’ requirements.

Additionally, mobile foam units will be provided. For immediate action against small local fires, the power

house is equipped with a number of powder extinguishers at strategic locations, and CO2 extinguishers for

electrical fires (spacing as per NFPA10). The fire main will be built using the design guideline ‘NFPA24

Private fire service main’.

The firefighting pump will operate on diesel. The pump will be located within the fire pump house. The pump

will only be used in an emergency and for short duration testing, for a maximum of 30 minutes once a week.

The pump will have an electrical output of less than 100 kW.

The tank area design is based on NFPA30, with the safety distances and cooling water streams spaced for

exposure protection.

Administration Area

The administration area will be located within the main building on the eastern portion of the site, adjacent

to the engine hall on its western side. This administration area will be located on the first floor of this building

and will comprise a meeting room, a manager’s room, a kitchen area and toilet facilities.

Electrical Area

The electrical area will be located within the main building on the eastern portion of the site, adjacent to the

engine hall on its western side. This administration area will be located on the ground floor of this building

and will comprise a control room, an MV (medium voltage)-switchgear, an LV (low voltage)-switchgear and

a DC (direct current)-system.

The power plant will be self-sufficient in providing electricity to power the various facilities, equipment and

utilities on site. During plant downtime (e.g. plant maintenance) a feed will be taken from the existing ESB

network serving Grange Castle Business Park. It is expected that there will be adequate capacity in the grid

to accommodate this demand during plant downtime.



In normal operation no fuel will leak out from the components of the fuel system. However in connectionwith maintenance, or due to unforeseen leaks, there is potential for fuel or water to spill in the hot box ofthe engine. The spilled liquids will be collected and drained by gravity from the engine through the dirty fuelconnection. Dirty leak fuel will be led to a sludge tank.


The fire-fighting protection system philosophy is based on widely recognized National Fire ProtectionAssociation (NFPA) standards. Piping and equipment may still follow standards used by the fire protectionequipment supplier.

The stand pipe system inside the engine hall follows ‘NFPA14 class /I stand pipe system’ requirements.Additionally, mobile foam units will be provided. For immediate action against small local fires, the powerhouse is equipped with a number of powder extinguishers at strategic locations, and C02 extinguishers forelectrical fires (spacing as per NFPA10). The fire main will be built using the design guideline ‘NFPA24Private fire service main’.

The firefighting pump will operate on diesel. The pump will be located within the fire pump house. The pumpwill only be used in an emergency and for short duration testing, for a maximum of 30 minutes once a week.The pump will have an electrical output of less than 100 kW.

The tank area design is based on NFPA30, with the safety distances and cooling water streams spaced forexposure protection.

Administration Area

The administration area will be located within the main building on the eastern portion of the site, adjacentto the engine hall on its western side. This administration area will be located on the first floor of this buildingand will comprise a meeting room, a manager’s room, a kitchen area and toilet facilities.

Electrical Area

The electrical area will be located within the main building on the eastern portion of the site, adjacent to theengine hall on its western side. This administration area will be located on the ground floor of this buildingand will comprise a control room, an MV (medium voltage)-switchgear, an LV (low voltage)-switchgear anda DC (direct current)-system.

The power plant will be self-sufficient in providing electricity to power the various facilities, equipment andutilities on site. During plant downtime (e.g. plant maintenance) a feed will be taken from the existing ESBnetwork serving Grange Castle Business Park. It is expected that there will be adequate capacity in the gridto accommodate this demand during plant downtime.

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43

Workshop and Warehouse

The compact workshop and warehouse building will be located in the western portion of the site, near the

entrance to the site. It will house stores, a maintenance workshop and a toilet, as well as a security area.

Traffic

The power plant will run in automated control as discussed in Attachment C of this application. Site

attendance will be limited to maintenance and occasional administrative meetings.

Maximum traffic generated by delivery vehicles, visitors and incidental workers / contractors will be in the

order of 3 vehicles per day inbound with the same number outbound.

A maximum volume of 2,895m³ of distillate fuel oil will be stored in 1 no. bunded tank on site. This quantity

is sufficient to operate the plant at maximum output for approximately 3 days of continuous operation. The

distillate fuel oil will be delivered to site by road tankers. The maximum number of tankers expected travelling

to and from the site in any one day will be in the region of 2- 3 tankers, when the plant is in continuous

operation.

Security

The site will be enclosed within a 2.4 metre boundary fence; security will be managed on site by a

specialist contractor. Car parking will be provided near the Compact Workshop and Warehouse building.

Only approved contractor, delivery, collection and site vehicles will be permitted access to the operational

area of the site.


43


The compact workshop and warehouse building will be located in the western portion of the site, near the

entrance to the site. It will house stores, a maintenance workshop and a toilet, as well as a security area.

Traffic

The power plant will run in automated control as discussed in Attachment C of this application. Site

attendance will be limited to maintenance and occasional administrative meetings.

Maximum traffic generated by delivery vehicles, visitors and incidental workers / contractors will be in the

order of 3 vehicles per day inbound with the same number outbound.

A maximum volume of 2,895m³ of distillate fuel oil will be stored in 1 no. bunded tank on site. This quantity

is sufficient to operate the plant at maximum output for approximately 3 days of continuous operation. The

distillate fuel oil will be delivered to site by road tankers. The maximum number of tankers expected travelling

to and from the site in any one day will be in the region of 2- 3 tankers, when the plant is in continuous

operation.

Security

The site will be enclosed within a 2.4 metre boundary fence; security will be managed on site by a

specialist contractor. Car parking will be provided near the Compact Workshop and Warehouse building.

Only approved contractor, delivery, collection and site vehicles will be permitted access to the operational

area of the site.



The compact workshop and warehouse building will be located in the western portion of the site, near theentrance to the site. It will house stores, a maintenance workshop and a toilet, as well as a security area.

Traffic

The power plant will run in automated control as discussed in Attachment C of this application. Siteattendance will be limited to maintenance and occasional administrative meetings.

Maximum traffic generated by delivery vehicles, visitors and incidental workers / contractors will be in theorder of 3 vehicles per day inbound with the same number outbound.

A maximum volume of 2,895m3 of distillate fuel oil will be stored in 1 no. bunded tank on site. This quantityis sufficient to operate the plant at maximum output for approximately 3 days of continuous operation. Thedistillate fuel oil will be delivered to site by road tankers. The maximum number of tankers expected travellingto and from the site in any one day will be in the region of 2— 3 tankers, when the plant is in continuousoperation.

Security

The site will be enclosed within a 2.4 metre boundary fence; security will be managed on site by aspecialist contractor. Car parking will be provided near the Compact Workshop and Warehouse building.Only approved contractor, delivery, collection and site vehicles will be permitted access to the operationalarea of the site.

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Table D.1: Summary of Operational Emissions, Abatement and Control Systems

Unit Emission Type / Waste Abatement Measure / Treatment System / Recovery System Process Control System

Foul wastewater Treated foul water Foul wastewater will consist of domestic effluent from the toilets, sinks, etc. on-site. This wastewater will be discharged from the site via an appropriately sized pipe and will

connect to the existing foul sewer network in Grange Castle Business Park.

This discharge will be in accordance with the conditions of the industrial emissions as stipulated by the EPA

Monitoring

Inspections

PPMP

EMS

IE Licence

General Maintenance Engine area and tank bund cleaning

Treatment in silt trap and oil / water interceptor and treatment and monitoring. Good housekeeping Dedicated drainage channels

Monitoring

Inspections

PPMP

General Maintenance Contaminated rags and wipes / Filter elements / PPE etc

Removal from site by appropriately authorised contractors Good housekeeping

Document Control

EMS

Engine Combustion Process

Atmospheric Emissions Design to BAT

Fuel type

Selective Catalytic Reduction (SCR)

Advanced computerised control system

Monitoring

Inspections

PPMP

EMS

Low Sulphur Distillate Oil Tank

Spills / leaks

Catastrophic failure

Secondary containment

Surface water drainage system

Monitoring

Inspections

PPMP

EMS

Electricity Transformers Spills / leaks Bunds


Monitoring

Inspections

PPMP

Diesel-fired firewater pump

Spills / leaks Atmospheric emissions

Infrequent use

Low sulphur distillate fuel

Bunds

Monitoring

Inspections

PPMP

44




Foul wastewater Treated foul water Foul wastewater will consist of domestic effluent from the toilets, sinks, etc. on-site. This wastewater will be discharged from the site via an appropriately sized pipe and will

connect to the existing foul sewer network in Grange Castle Business Park.

This discharge will be in accordance with the conditions of the industrial emissions as stipulated by the EPA

Monitoring

Inspections

PPMP

EMS

IE Licence

General Maintenance Engine area and tank bund cleaning

Treatment in silt trap and oil / water interceptor and treatment and monitoring. Good housekeeping Dedicated drainage channels

Monitoring

Inspections

PPMP

General Maintenance Contaminated rags and wipes / Filter elements / PPE etc

Removal from site by appropriately authorised contractors Good housekeeping

Document Control

EMS

Engine Combustion Process

Atmospheric Emissions Design to BAT

Fuel type

Selective Catalytic Reduction (SCR)

Advanced computerised control system

Monitoring

Inspections

PPMP

EMS

Low Sulphur Distillate Oil Tank

Spills / leaks

Catastrophic failure

Secondary containment


Monitoring

Inspections

PPMP

EMS

Electricity Transformers Spills / leaks Bunds


Monitoring

Inspections

PPMP

Diesel-fired firewater pump

Spills / leaks Atmospheric emissions

Infrequent use

Low sulphur distillate fuel

Bunds

Monitoring

Inspections

PPMP

Grange BackUp PowerIndustrial Emissions Licence Review Application Molt MacDonald


Emission Type / Waste Abatement Measure / Treatment System / Recovery System Process Control System

Foul wastewater Treated foul water Foul wastewater will consist of domestic effluent from the toilets, sinks, etc. on-site. This Monitoringwastewater will be discharged from the site via an'appropriately sized pipe and will Inspections

connect to the extsting foul sewer network In Grange Castle Bustness Park. PPMPThis discharge will be in accordance with the conditions of the industrial emissions as

stipulated by the EPA EMSIE Licence

General Maintenance Engine area and tank bund Treatment in silt trap and oil / water interceptor and treatment and monitoring. Good housekeeping Dedicatedcleaning drainage channels

MonitoringInspections

PPMP

General Maintenance Contaminated rags and wipes Removal from site by appropriately authorised contractors Good housekeeping/ Filter elements / PPE etc Document Control

EMS

Engine Combustion Atmospheric Emissions Design to BAT Advanced computerised controlProcess Fuel type system

Selective Catalytic Reduction (SCR) MonitoringInspections

PPMPEMS

Low Sulphur Distillate Spills / leaks Secondary containment Monitoring0” Tank Catastrophic failure Surface water drainage system Inspections

PPMPEMS

Electricity Transformers Spills / leaks Bunds MonitoringSurface water drainage system Inspections

PPMP

Diesel-fired firewater Spills / leaks Atmospheric Infrequent use Monitoringpump emissions Low sulphur distillate fuel Inspections

Bunds PPMP

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Surface water drainage system EMS

Fire Fighting System Firewater Surface water drainage system Subject to a comprehensive fire water retention study

Chemical Store Spills / leaks

Waste

Drip trays / spill pallets

UN approved containers

Inspections

Limited access

Good housekeeping

Document Control COSHH Assessment

Compliance with REACH

Water treatment chemicals to filter public water mains supply to provide pure water for NOx injection

Spills / leaks Bunds





Inspections

PPMP

Good housekeeping

EMS

Oils and Greases Spills / leaks Bunds


Vapour trap


Monitoring

Inspections

PPMP

Ancillary Units General waste Removal from site by appropriately authorised contractors

UN approved containers, as required

Monitoring

Inspections

Good housekeeping

Document Control

45




Fire Fighting System Firewater Surface water drainage system Subject to a comprehensive fire water retention study

Chemical Store Spills / leaks

Waste



Inspections

Limited access

Good housekeeping

Document Control COSHH Assessment

Compliance with REACH

Water treatment chemicals to filter public water mains supply to provide pure water for NOx injection

Spills / leaks Bunds





Inspections

PPMP

Good housekeeping

EMS

Oils and Greases Spills / leaks Bunds


Vapour trap


Monitoring

Inspections

PPMP

Ancillary Units General waste Removal from site by appropriately authorised contractors

UN approved containers, as required

Monitoring

Inspections

Good housekeeping

Document Control

Grange BackUp PowerIndustrial Emissions Licence Review Application

Emission Type / Waste Abatement Measure / Treatment System / Recovery System

Molt MacDonald

Process Control System


Fire Fighting System Firewater Surface water drainage system Subject to a comprehensive firewater retention study

Chemical Store Spills / leaks Drip trays / spill pallets InspectionsWaste UN approved containers Limited access

Good housekeepingDocument Control COSHH

AssessmentCompliance with REACH

Water treatment Spills / leaks Bunds Inspectionschemicals to filter public Drip trays / spill pallets PPMPwater mains supply to , ,provide pure water for UN approved containers Good housekeepingNOX injection Surface water drainage system EMS


Oils and Greases Spills / leaks Bunds MonitoringSurface water drainage system Inspections

Vapour trap PPMPUN approved containers

Ancillary Units General waste Removal from site by appropriately authorised contractors MonitoringUN approved containers, as required Inspections

Good housekeepingDocument Control

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