Paragraph 32 MeasurementsF1

(1)

The concentrations of SO₂, NO_x and dust in waste gases from each combustion plant with a total rated thermal input of 100 MW or more must be measured continuously unless sub-paragraph (3) applies.

(2)

The concentration of CO in waste gases from each combustion plant firing gaseous fuels with a total rated thermal input of 100 MW or more must be measured continuously unless sub-paragraph (3) applies.

(3)

SEPA may elect not to require the continuous measurements required by sub-paragraphs (1) and (2) in the following cases—

(a)

for combustion plants with a life span of less than 10,000 operational hours,

(b)

for SO₂and dust from combustion plants firing natural gas,

(c)

for SO₂ from combustion plants firing oil with known sulphur content in cases where there is no waste gas desulphurisation equipment,

(d)

for SO₂ from combustion plants firing biomass if the operator can prove that the SO₂ emissions can under no circumstances be higher than the prescribed emission limit values,

(4)

where SEPA does not require continuous measurements, measurements of dust and, for gas fired plants, CO are required at least once every 6 months,

(5)

where SEPA does not require continuous measurements, measurements of SO₂andNOx are—

(a)

required at least once every 6 months, unless head (b) applies,

(b)

this sub-paragraph applies where SEPA has verified and approved of other procedures to determine SO₂ and NO_x emissions,

(c)

where SEPA has verified and approved of other procedures, procedures must—

(i)

use relevant CEN standards or British standards,

(ii)

when relevant CEN or British standards are not available, ISO or other international standards which ensure the provision of data of an equivalent scientific quality.

(6)

For combustion plants firing coal or lignite, the emissions of total mercury must be measured at least once per year.

Annotations

Textual amendments

F1: Sch. 21 inserted (1.11.2025) by The Environmental Authorisations (Scotland) Amendment Regulations 2025 (S.S.I. 2025/165), reg. 1(2), sch. 12 (with sch. 23)