The Water Cooled Lithium Lead Test Blanket System (WCLL TBS) is one of the EU Test Blanket Systems candidate for being installed and operated in ITER. In view of its Conceptual Design Review by F4E and ITER Organization (IO), planned for mid-September 2020, several technical activities have been performed in the areas of WCLL TBS Ancillary Systems design.

In this article the outcomes of the conceptual design phase of the four main Ancillary Systems of WCLL TBS, namely the Water Cooling System (WCS), the Coolant Purification System (CPS), the PbLi loop and the Tritium Extraction System (TES), are reported and critically discussed.

In particular, for each Ancillary System hereafter are reported: i) a short design description, including the conceptual design of their main components together with their operative conditions under the so-called Normal Operational State (NOS), ii) the ESP-ESPN classification for their main components, and iii) their arrangement and integration in the assigned ITER areas (PC#16, Vertical Shaft, TCWS Vault, Galleries and Tritium Process Room).

水冷锂铅测试毯系统（WCLL TBS）是在ITER中安装和运行的欧盟测试毯系统的候选之一。鉴于计划于2020年9月中旬进行的F4E和ITER组织（IO）的概念设计审查，已在WCLL TBS辅助系统设计领域进行了多项技术活动。

在本文中，WCLL TBS的四个主要辅助系统，即水冷却系统（WCS），冷却液净化系统（CPS），PbLi回路和the提取系统（TES）的概念设计阶段的结果是报告并进行了严格讨论。

特别是以下每个辅助系统的报告：i）简短的设计说明，包括其主要组件的概念设计以及在所谓的正常运行状态（NOS）下的运行状况，ii）ESP-ESPN分类（iii）在指定的ITER区域（PC＃16，垂直井，TCWS避难所，画廊和Tri工艺室）中进行布置和集成。