Scholarlink

In order to investigate the effect of Cr-coating on the ballooning and burst behavior of zirconium alloy cladding under loss of coolant accident (LOCA) conditions, transient burst tests were performed on pressurized Cr-coated and un-coated zirconium alloy tubes under steam environment. Results show that 15 μm Cr-coating had no substantial effect on cladding rupture temperatures under the same internal pressure conditions. But the Cr-coated tubes had smaller expansion diameter and opening area during ballooning and burst process, indicating smaller hoop strain at the burst position than the un-coated ones. The Cr-coating reduced and developed through-cracks at high ballooning region, allowing potential rapid oxidation of underlying zirconium.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Ballooning and Burst Behavior of Cr-Coated Zr Alloy Cladding Under LOCA Conditions

  • 会议论文

  • 发表日期：

    2026年

查看全文
  • Ruhao Zhong,
  • Haode Xu,
  • Dong Wang,
  • Yapei Zhang,
  • Chao Guo,
  • Xuefeng Fu,
  • Yueyang Hou

摘要

In order to investigate the effect of Cr-coating on the ballooning and burst behavior of zirconium alloy cladding under loss of coolant accident (LOCA) conditions, transient burst tests were performed on pressurized Cr-coated and un-coated zirconium alloy tubes under steam environment. Results show that 15 μm Cr-coating had no substantial effect on cladding rupture temperatures under the same internal pressure conditions. But the Cr-coated tubes had smaller expansion diameter and opening area during ballooning and burst process, indicating smaller hoop strain at the burst position than the un-coated ones. The Cr-coating reduced and developed through-cracks at high ballooning region, allowing potential rapid oxidation of underlying zirconium.