Improved safety in the AES 92 design accounts for projected improvements in radiation protection parameters during its operation. The calculated individual effective dose of personnel exposure for this design is 1 mSv/a, which is commensurate with the permissible annual effective dose limit for a person in the general population and in compliance with the Bulgarian normative base and European directives. As to the design dose rate per person of the greater population due to radioactive releases by the NPP: this value for the AES 92 variant is lower than 0.05 mSv/a, which represents less than 1/3 of the permissible dose rate as per article 10 of NRA's regulations ensuring the safety of NPPs. This dose is pertinent to the effect of all sources of releases at the site. The normalized annual radioactive releases are also indicative for the improved environmental impact parameters (for 1000 MW). While target criteria stipulated for the unit design was < 6.7 GBq/a for liquid releases, the design value for AES 92 is lower by one order - 0.11 GBq/a. Similarly, with target criteria below 33.3 TBq/a for the liquid releases, the design value for AES 92 is 2.9 TBq/a.