Steam Generators

The steam generator is a product of safety class 1 and one of the key components of the reactor plant. It produces steam supplied to a turbogenerator, which converts the steam energy into electricity.

The steam generator is an oversized equipment with up to 15m length and 430 t weight. AEM-Technologies is the only power engineering company in Russia which can produce steam generator assemblies and deliver them anywhere in the world.

General characteristics

AEM-Technologies produces steam generators PGV-1000M, PGV-1000MKP, and PGV-1000MKO, which are part of the VVER-1000, VVER-1200, and VVER-TOI reactor plants. Each steam generator version is tailored to a specific generation of nuclear reactors and has its own key features.

PGV-1000M debuted in 1980 and is the most common version of steam generators. It has a staggered tube arrangement in a tube bundle. PGV-1000MKP is an advanced high-capacity steam generator with an in-line tube arrangement. PGV-1000MKO has an even greater steam capacity and thermal power and differs in design as it has no steam header in the upper part.

Thermal power	750 – 828 MW
Steam capacity	1 470 – 1 652 t/h
Heat exchange surface area of tube bundle	6 105 – 6 660 m²
Number of heat exchange tubes	10 978 – 11 000

Dimensions

Weight

355 – 436 t

Steam generator length

13.8 – 15 m

Steam generator inner diameter

4.0 – 4.2 m

Heat exchange tube diameter

16 mm

Heat exchange tube length

11 – 17 m

Production and shipments

Petrozavodskmash shipped steam generator headers for Tianwan NPS

Petrozavodsk plant (a member of machine engineering division of Rosatom Corporation, and Karelian Regional Branch of the Russian Engineering Union) manufactured the primary circuit header bodies designed to complete steam generators of power unit No. 7 of Tianwan NPS under construction in China.