S.L. 549.56 Art. 2Definitions. S.L. 549.81 S.L. 549.77

For the purpose of these regulations and unless the context otherwise requires:

"biomass" means products consisting of any whole or part of vegetable matter from agriculture or forestry which can be used as a fuel for the purpose of recovering its energy content and the following waste used as fuel:

(a) vegetable waste from agriculture and industry;

(b) vegetable waste from the food processing industry, if the heat generated is recovered;

(c) fibrous vegetable waste from virgin pulp production and from the production of paper from pulp, if it is co-incinerated at the place of production and the heat generated is recovered;

(d) cork waste;

(e) wood waste with the exception of wood waste which may contain halogenated organic compounds or heavy metals as a result of treatment with wood preservatives or coating, and which includes in particular such wood waste originating from construction and demolition waste; "combustion unit" means any plant in which fuel is oxidised in order to use the heat thus generated; "competent authority" means the Environment and Resources Authority; "director" means the Director of the Environment Protection Directorate of the Environment and Resources Authority and includes any person or body of persons acting on his behalf or under his authority;

"emission" means the discharge of substances from the combustion plant to air;

"emission limit value" means the permissible mass concentration of an air pollutant in the waste gas discharged by the combustion plant expressed in mg.Nm-3 or ng.Nm-3 as the case may be. The mass concentration measured in the waste gas shall be expressed at standard conditions according to the following equation:

T 101.3 100 20.94 - O s [P] =     [P] s M 273 P 100 - W 20.94 - O M Where: [P]s is the mass concentration of the pollutant at standard conditions. [P]M is the mass concentration of the pollutant measured at the temperature T in K, at a Pressure P in kPa, at a percentage flue gas water vapour content of W and at a flue gas oxygen content of O . M T is the actual flue gas temperature in K. P is the actual flue gas pressure in kPa. W is the percentage water vapour content of the flue gas.

OS is the standard oxygen content content by volume in the waste gas which shall be 3% in the case of liquid and gaseous fuels, 6% in the case of solid fuels and 15% in the case of gas turbines. O is the measured oxygen content in the flue gas; M "existing combustion plant" means one or more combustion units for which development planning permission was granted before 1 July 1987. Two or more combustion units shall be considered as a single combustion plant if their waste gases are de facto discharged through a common stack;

"flue" means a compartment or division of a stack for conveying waste gases from the combustion plant to the outer air;

"fuel" means any solid, liquid or gaseous combustible material used to fire the combustion unit with the exception of waste covered by Waste Management (Incineration) Regulations, or any subsequent regulations substituting those regulations; "gas turbine plant" means any plant made up of a rotating machine which converts thermal energy into mechanical work, consisting mainly of a compressor, a thermal device in which fuel is oxidised in order to heat the working fluid, and a turbine; "multi-fuel firing combustion plant" means any combustion plant which may be fired simultaneously or alternately by two or more types of fuel; "new combustion plant" means one or more combustion units for which development planning permission was granted on or after 1 July 1987. Two or more combustion units shall be considered as a single combustion plant if their waste gases are discharged de facto through a common stack or if taking technical and economic factors into account, their waste gases could in the judgement of the competent authority be discharged through a common stack; "operator" means any natural or legal person who operates the combustion plant, or who has been delegated decisive economic power over it; "permit" means the permit issued under regulation 4 of the Integrated Pollution Prevention and Control Regulations; "pollutant" means a substance which has been directly or indirectly introduced into the atmosphere as a resulting of anthropogenic activity and which has deleterious effects of such a nature as to endanger human health, harm living resources, ecosystems and material property, and impair amenities or interfere with other legitimate uses of the environment;

"stack or chimney" means the structure rising above roof level and which provides a conduit for waste gases from the combustion plant and which may embody one or more flues; "rated thermal input" means the rate at which fuel can be burned at the maximum continuous rating of the combustion plant multiplied by the net heat value of the fuel expressed as megawatts thermal (MWTH);

"waste gas" means the carrier gas together with any solid, liquid or gaseous emissions which are discharged with it; the waste gas volume flow rate shall be expressed in metres cubed per hour at standard conditions, i.e. at a temperature of 273K and at a pressure of 101.3 kPa, after correction for the water vapour content, and 3 -1 hereinafter referred to as normal metre cubed per hour or Nm .hr .