Page 93 - SD RATCH EN

4.4 Noise management
Noise in power plants is chiefly generated by generators, water pumps or maintenance activities. Silencers are installed to fully cover the machine. Buffers for noise control are in place and operators are required to wear proper protection gears. Noise level is monitored and benchmarked against standard limit, to ensure zero impacts on job operators and the community.
Results of noise measurement
RATCH Group PCL.
Sustainability Report 2020
93
dB(A) 70
68 66 64 62 60 58 56 54 52 50
61.8 57.3
Power Plant
64.6
58.7
Ban Chao Nua
dB(A) Standard 70 dB(A) 120
110 100 90
58.7 80 70
60 53.9 50
40
94.1 80.5
Power Plant
99.1 90.5
Ban Chao Nua
Standard 115 dB(A)
97.2 83.9
Ban Sam Reun
24-hour average noise level
Maximum noise level
Ban Sam Reun
In 2020, the community around the power plant filed no complaint regarding to noise level
5. Biodiversity conservation at Ratchaburi Power Plant
Ratchaburi Power Plant’s environmental impact management involves the maintenance of ecological balance, to benefit all living beings in the area and to increase biodiversity.
The power plant has monitored biodiversity change by focusing on 4 categories of species namely mammalians, birds, reptiles, and amphibians. Its efforts entail the preservation of wetlands, which serve as the animals’ habitat and the food chain of plants and animals.
Since the construction began in 1997, the power plant has conducted biannual surveys on the number, diversity, population, dispersal, concentration and status of wild animals, one in the rainy season (August) and the other in the dry season (December). The survey covers the 1-square kilometer of the power plant’s buffer area. The results in the past 23 years the ecosystem of the buffer area thrived and successfully coexisted with the power plant’s operations.
2020 survey result
In 2020, Ratchaburi Power Plant found 100 species of wild animals which are: 72 bird species, 6 mammal species, 9 amphibian species, 13 reptile species