TGC-1 Power Engineers Complete the First Phase of Work to Reduce the Noise Level at the Petrozavodskaya CHPP

19 October 2021

Employees of TGC-1 PJSC in Petrozavodsk are implementing a phased program to reduce the noise level during start-ups and shutdowns of boilers at the Petrozavodskaya CHPP. On 15 October, an improved silencer was commissioned at the steam outlet of Boiler No. 2. Installing similar silencers on the other two boilers will keep noise to a minimum.

To assess the results of the work performed at the first phase, TGC-1 engaged an independent organization, the Center for Laboratory Analysis and Technical Measurements in the Republic of Karelia (TsLATI). The tests showed a significant reduction in noise at the borders of residential development, directly adjacent to the territory of the Petrozavodskaya CHPP. TsLATI measured the noise on 15 October 2021 when dumping steam with a pressure of 100 to 120 kgf/cm² and compared the data with measurements dated 23 November 2019, carried out during a steam dump with a pressure up to 50 kgf/cm² when starting-up Power Boiler No. 2.

“Due to the installation of a new silencer, we observe a noticeable noise reduction. For example, on Veterinarny Lane near Boarding School No. 23, the equivalent noise level decreased by 12%; on 18 Belomorskaya Street, it decreased by 55%; on 32 Zhukovsky Street, by 16%. The next step is the installation and adjustment of silencers on Power Boiler No. 1 and Boiler No. 3, which will reduce the noise level to minimum,” noted Roman Kartoshkin, Chief Engineer of the Karelsky Branch of TGC-1 PJSC.  


Noise from the equipment of combined heat and power plants occurs when steam is released into the atmosphere during the start-up and shutdown of power boilers. This is a technical feature of the equipment. 
The Petrozavodskaya CHPP is the basic enterprise of the Petrozavodsk heat supply system. It provides thermal energy to more than 85% of residents and enterprises of the city.
TGC-1 PJSC is the leading producer and supplier of electric and thermal energy in the North-West of Russia. TGC-1 operates 52 electric generating stations in four regions of Russia: St. Petersburg, Republic of Karelia, Leningrad Oblast, and Murmansk Oblast.