영구원자로를 탑재 하게 되면 핵연료 교체 비용과 교체 뒤 재가동 

하는 데 걸리는 한 달 공백이 없어지게 된다네요.

 보레이급 전략원잠과 야센급 공격원잠에 최적화 돼있다고 하구요.

 In Russia, an eternal nuclear reactor for new nuclear submarines

 2018.08.07

 In Russia, the active zone - the heart of the nuclear reactors of nuclear submarines 

with a lifetime resource for the entire lifetime of nuclear submarines, that is, that does 

not require recharging of nuclear fuel, was first created and tested, said annual report 

of Rosatom State Corporation for 2017.

 "The development, fabrication and inter-departmental testing of two transport active 

zones - the optimized core for the 4th generation nuclear submarine with the campaign 

until the medium repair of the ship and unique in the domestic history of the active zone 

with a resource for the entire life cycle of the ship, was completed," the report says.

 Russian submarines of the fourth generation include the submarines of the Borey and 

Yasen projects.

 The former commander of the Northern Fleet, Admiral Vyacheslav Popov explained that, 

depending on the design of the boat and the mode of its operation, the recharging of the

reactor takes place every 5-10 years. The time for the restart of nuclear fuel is about a month.

 https://ria.ru/defense_safety/20180807/1526108754.html