Preliminary Shielding Calculation and Analysis of OTSG for ACPR50S Small Modular Reactor

作者：Sheng, Xuanyu; Ling, Chen

来源：Nuclear Power Engineering, 2018, 39(2): 66-71.

DOI：10.13832/j.jnpe.2018.01.0066

• Normal operating conditions
• Once through steam generator
• OTSG
• Preliminary analysis
• Shielding calculation
• Small modular reactors
• Steam activation
• Transport modeling

Once-through steam generator (OTSG) is one of the main equipments of ACPR50S small modular reactor. High flux of neutrons in OTSG will cause steam activation, increase the dose rate at main steam outlet, thus polluting entire secondary loop of the reactor. We carried out a preliminary analysis of 16N generation and transport based on physical calculation of current Shielding design of OTSG. The results show that the neutron flux magnitude in the OTSG has been reduced to a low level. Activity of 16N in the OTSG outlet is approximately tens of Bq/cm3.The results indicate that the material and thickness of current shielding structure of OTSG is satisfactory to meet the preliminary design goal under normal operating conditions.

• 出版日期2018-4-15
• 单位清华大学