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민간 핵위협 감시단체 NTI의 Replacing Highly Enriched Uranium in Naval Reactors

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전세계 대량살상무기 확산을 감시해온 민간단체인 ‘핵위협 이니셔티브’(nti.org)가 2016년 5월 발간한 Replacing Highly Enriched Uranium in Naval Reactors

입니다.

http://www.nti.org/media/pdfs/Replacing_HEU_in_Naval_Reactors_Report_FINAL.pdf?_=1458832580

 

 

고농축우라늄(HEU)와 저농축우라늄(LEU) 사용 해군 함정용 반응로에 대한 문제를 다루고 있습니다.

 

NTI.jpg

 

저에게 흥미로운 부분은 보고서 49페이지 입니다.

 

The 1995 Report concludes its assessment of LEU cores in current designs by stating that such cores “would require more
frequent refueling, resulting in a significant increase in life-cycle cost, far greater reactor servicing workload, reduction
in ship availability to the fleet, increase in radiation exposure to shipyard personnel, and increase in the generation of
radioactive waste.”185 Several of these statements are simply not supported by the analysis in the report itself. Although it is
correct that using less than life-of-the-ship cores in SSNs in the same design space would require more frequent refueling
(assuming that a life-of-the-ship HEU core, something that is yet to be proven in practice, is achievable) the reduction in
ship availability is arguably not as severe as the Navy states, increases in radiation exposure to shipyard personnel are not
invariable consequences of using LEU, and the increase in the generation of radioactive waste may not be a significant.


Environmental Considerations
The 1995 Report suggests that use of LEU fuel would cause negative environmental impacts because: (1) there would be an
increase in the number of shipments of spent fuel; (2) the use of LEU fuel would create an increase in the volume of spent
fuel requiring disposal; and (3) the increased number of refuelings needed with LEU fuel would potentially increase the
occupational radiation exposure of shipyard workers.193

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마요네즈덥밥 2017.09.04. 18:48

1995 년 보고서는 현재의 설계에서 LEU 코어에 대한 평가를 종결합니다.
잦은 연료 보급으로 인해 생애주기 비용이 크게 증가하고 원자로 서비스 업무량이 크게 증가하며 함대의 선박 가용성이 감소되고 조선소 직원에게 방사선 피폭이 증가하며 방사성 폐기물 발생이 증가하게됩니다.
185 이러한 진술 중 몇 개는 보고서 자체의 분석에서 지원되지 않습니다.
동일한 설계 공간에서 SSN에있는 선명도가 낮은 코어를 사용하는 것이 더 자주 연료를 보급해야하는 것은 맞지만 (실제 HEU 코어라고 가정하면 아직 입증되지 않은 것입니다. 연습이 가능하다.) 선박 가용성의 감소는 논쟁의 여지가 있지만 해군에 비해 심각하지는 않으며, 조선소 직원에 대한 방사선 피폭의 증가는 LEU 사용의 변함없는 결과가 아니며 방사성 폐기물 발생의 증가는 중요하지 않을 수있다.


환경 고려 사항
1995 년 보고서는 LEU 연료를 사용하면 다음과 같은 이유로 환경에 부정적인 영향을 미칠 수 있다고 제안합니다.
(1) 사용 후 핵연료의 선적 수가 증가 할 것이다. (2) LEU 연료의 사용은 처분을 요구하는 사용 후 핵연료의 양을 증가시킬 것이다. (3) LEU 연료에 필요한 연료 보급 횟수가 증가하면 조선소 노동자의 직업적 방사선 피폭이 잠재적으로 증가 할 수있다.

 


The 1995 Report concludes its assessment of LEU cores in current designs by stating that such cores “would require more
frequent refueling, resulting in a significant increase in life-cycle cost, far greater reactor servicing workload, reduction in ship availability to the fleet, increase in radiation exposure to shipyard personnel, and increase in the generation of radioactive waste.”
185 Several of these statements are simply not supported by the analysis in the report itself.
Although it is correct that using less than life-of-the-ship cores in SSNs in the same design space would require more frequent refueling (assuming that a life-of-the-ship HEU core, something that is yet to be proven in practice, is achievable) the reduction in ship availability is arguably not as severe as the Navy states, increases in radiation exposure to shipyard personnel are not invariable consequences of using LEU, and the increase in the generation of radioactive waste may not be a significant.


Environmental Considerations
The 1995 Report suggests that use of LEU fuel would cause negative environmental impacts because:
(1) there would be an increase in the number of shipments of spent fuel; (2) the use of LEU fuel would create an increase in the volume of spent fuel requiring disposal; and (3) the increased number of refuelings needed with LEU fuel would potentially increase the occupational radiation exposure of shipyard workers.193

 

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