When developing the SG for the VPBER-600 reactor special attention was paid to design decisions, which ensure:

1) high reliability requirements;

2) operation and repair safety;

3) possibility for inspection during fabrication, including 100% non-destructive testing of materials and welds;

4) minimum weight and dimensions, which are especially important for SGs of integral reactors;

5) maximum unification of SG units;

6) organization of parallel process flows during fabrication;

7) maximum automation of fabrication process;

8) block-section-by-block-section assembling and replacement of the SG after lifetime exhaustion, that allows a decrease in the joint diameter in reactor vessel;

9) the SG on the secondary side is made of some independent block-sections, that allows isolation of non-leaktight block-sections for both feed water and steam;

10) diagnostics during operation;

11) isolation of any non-leaktight subsection during repair;

12) possibility of using structural units that show good performance in operated SGs.;

13) guaranteed approval of SG performance by representative testing of full-scale cassettes in test facilities.