Posts Tagged ‘main circulation pump’


Chernobyl Unit 2, November 2016 (Part I)

January 17, 2017

Please select any photo in the gallery for a larger version and descriptive caption.

This photo gallery documents the main circulation pumps and the repair/transport corridor in Unit 2 at the Chernobyl Nuclear Power Plant as they appeared in mid-November 2016.  Unit 2 operated until a fire damaged the No. 4 generator and the unit’s feedwater machinery in October of 1991, after which the unit was permanently shut down.  It is an example of the earliest variant of the RBMK plant design, following the model of the Leningrad units.  The main circulation pumps in these earlier units are aligned on an axis perpendicular to the turbines and on the +1.0m elevation, whereas in the later generation of RBMK units (e.g. ChNPP Units 3-4), the pump engines are on the +12.5m elevation and aligned parallel with the turbines so that twinned units could share the same MCP engine halls and associated cranes.  The earlier-generation units are smaller than the later generation, mainly because they lack a steam-condensing “accident localization system” beneath the reactor.

Locations shown in the photo gallery may be identified on the following plan of the +1m elevation in the Unit 2 reactor building, taken from plant safety documentation:


Inside Chernobyl Nuclear Power Plant 2011, Part I: Unit 3 and V Block

August 8, 2011

I just returned from another trip to Chernobyl. We visited some parts of the power plant that we didn’t get to see on last year’s trip, but—as I’m sure my readers can understand—one day at the station wasn’t enough and I’m left pining for more! (I’m particularly lusting after a certain pachyderm appendage, if you catch my drift.) Anyway, without further ado, here’s a gallery of select images from the Phase II end of the Chernobyl Nuclear Power Plant—that is, from the Unit 3 reactor building and the Unit 3-4 ventilation building (in which is located a memorial to Valery Khodemchuk, the young engineer whose remains have never been recovered from the Unit 4 north main circulation pump engine hall). Click on any image for a larger version with my descriptive comments (and click again for the full-sized photograph).

I’m deeply indebted to Mr. Igor Gramotkin, General Director of ChNPP, and Ms. Irina Kovbich of ChNPP’s Information Department, for permission to visit, and a most fascinating tour of this unique facility.

Watch a short video of our trip to the Khodemchuk memorial:

To get a bearing on the station layout and the path we took within it, please see the floor plan at bottom, depicting the station’s +10/+12.5-meter elevation, compiled from an official plant safety document.  My comments in the photos / video make reference to specific locations visible on this map.

Floor plan of ChNPP Phase II, +10/+12.5-meter elevation

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