Annual Performance Report for Waste Gas Technology (UK) Ltd
Permit No. JP3132LH
This report is required under the Waste Incineration Directive Article 12(2):- requirements
on access to information and public participation. This requires the operator of an
incineration or co-incineration plant to produce an annual report to the regulator on the
functioning and monitoring of the Plant and to make this available to the public. To satisfy
the requirements of the directive, the fol owing information is provided in this report. 1.0
Name of Company
Waste Gas Technology (UK) Limited
Name of Plant
Waste Gas Technology Limited
Address of Plant
Isle Of Wight
All municipal waste that is not recycled from the Isle Of
Wight area, is co-incinerated at this Gasification Plant,
providing a long term, sustainable solution for waste
disposal in the area as part of the integrated approach to
waste management on the Island, which achieves high
levels of recycling and minimal disposal of waste to landfill.
The main purpose of the activity carried out at this facility, is to co-incinerate Municipal
Solid Waste (MSW), removing energy in the form of steam and generating electricity of 1.7
MW for the National Grid. The permit covers the site and the co-incineration process, which
also includes reception of waste, storage and off site transfer of residues, emissions to
water, air and land, recording and monitoring conditions. 3.0
Summary of Plant operation
The facility consists of a single co-incineration line, capable of processing approximately 4
tonnes of waste per hour, al owing for an average throughput of 30,000 tonnes per year,
this being dependent on two main factors: actual operating hours (plant operations based
on 7,500 hours per annum) and the Calorific Value of the waste being co-incinerated, the
average Net Value being in the order of 12.1MJ/Kg. The shredded waste from the non-
recyclable fraction is gasified in starved air conditions and the resultant syngas fully burnt in
a combustor. A Heat Recovery Steam Generator captures the heat from the combustion to
produce steam which drives a steam turbine and generator, the waste gases being cleaned
before being released via a 27 metre chimney.
In January 2014, the plant experienced an unexpected failure of the Duplex fuel transport
system forcing an unplanned outage. In total, it took 24 days to complete the necessary
repairs and return the plant back into full operation. This event caused a total of 576hrs of
lost availability and adversely affected the overall operating hours for the year but did not
impact on emission control or outputs. Despite this single event, the total fuel (waste)
processed was similar to 2013 at just over 19,000Te, with overall electrical export at
5,508MW. This represents a 4.12% increase in electrical export per hour of plant operation
The waste provider continued to supplement kerbside MSW col ections with both on-Island
and off-Island commercial volumes and now makes up approximately 50% of all waste
processed to produce fuel for the co-incineration process. This increase in commercial
volume has resulted in additional use of Lime for Flue Gas Treatment, due to the higher
percentages of plastic and fossil fuel derived components.
The Cooling Tower was subject to refurbishment works during the 3rd quarter of 2014, with
replacement of all pack material and drift eliminators as well as application of a new liner
coating and cleaning of all distribution pipework. Overhaul of the 4th and final fan cooler
unit was completed. This work has resulted in improved Cooling Tower efficiency and is
responsible for the slight increase in export power.
Plant Operational Details 2014:
Total Waste Co-incinerated
Grate Ash Produced
APC Residue produced
Ash residues (Grate Ash/Bottom Ash) are currently sent to landfil .
Fine particle matter, Air Pollution Control (APC) residues, are removed from the flue gas
stream by fabric filter and sent to specialised treatment works.
Summary of Plant Emissions
All emissions from the 27 metre high chimney are controlled to meet the emission limits
included within the PPC Permit. The flue gases released into the atmosphere are
continuously monitored for Particulate Matter, Total Organic Carbon (TOC), Hydrogen
Chloride (HCL), Carbon Monoxide (CO), Sulphur Dioxide (SO2) and Oxides of Nitrogen.
The Plant completed its 6 monthly emissions monitoring programme in accordance with its
Pol ution Prevention Control operating permit, using a fully MCERTS certified external
contractor. All emission results were within the Operating Permit limits. Future emissions
monitoring programmes will remain in accordance with PPC requirements.
The Continuous Emission Monitoring (CEM) equipment was in service during 2014 for 100%
of the plant operational time. This equipment is MCERTS approved where applicable and is
stringently monitored and maintained with quarterly and bi-annual calibration checks being
undertaken approved contractor/manufacturers.
Half-hourly, hourly and daily average emission data for continuously monitored emissions
were supplied to the Environment Agency as per Operating Permit, on a monthly basis. 5.0
Summary of Plant compliance
Strict environmental controls and proven operating experience ensures that the facility is
compliant with all conditions of its PPC Permit, as monitored by site Continuous Emission
Monitors (CEM’s). This is achieved through a fully automated process control system which
constantly monitors all aspects of the co-incineration process. This, coupled with detailed
operating procedures and fully trained staff, ensures that the plant is compliant against its
During 2014, no emission breaches were recorded or reported. No other complaints were
received during the year.
Table of Plant non-compliances:
Breach of Permit Conditions
No contamination and hence de-contamination has taken place within the site over the
Waste Gas Technology Ltd reported the fol owing Continuous Improvement Plans for 2014
Originally Proposed Improvements for 2014:
• There were no proposed improvements scheduled for 2014, however, the Cooling
Tower was refurbished during the annual maintenance shut in July.
Summary of Proposed Improvements for 2015:
• There are no proposed improvements scheduled for 2015 due to the current fuel
supply agreement ending in October.
As part of their regulatory responsibility, the Environment Agency inspector visits the facility
on a regular basis, and issues the subsequent Compliance Assessment Report (CAR) Form on
Name: Karl Hardy
Position: Operations Manager
Signed on behalf of the Company: Karl Hardy