Funakoshi, Y. Arimoto, Y. Ikeda, H. Ishibashi, T. Ohuchi, N. Terui, S. Wang, X. JACoW Publishing Geneva, Switzerland 978-3-95450-216-5 10.18429/JACoW-eeFACT2018-WEPBB01 English 286-289 WEPBB01 injection operation MMI vacuum quadrupole Contribution to a conference proceedings 2019 2019-04 https://doi.org/10.18429/JACoW-eeFACT2018-WEPBB01 http://jacow.org/eefact2018/papers/wepbb01.pdf The Phase 2 commissioning of SuperKEKB was performed from March to July 2018. In this report, the operation statistics and the QCS quench issue which we encountered during Phase 2 are described.