Shandong Dingnuo Automation Equipment Co., Ltd. will carry out phased renovation of storage tanks in the tank area, upgrading and replacing the level gauges of six storage tanks in the fuel oil tank area. The early on-site steel strip level gauges will be replaced with radar level gauges, and the signals will be introduced into the cabinet room of the light oil tank area. The DCS system of the light oil tank area, which has been in use for many years, will also be upgraded in terms of software and hardware; The optical level gauges for the 9 storage tanks in the lubricating oil tank area are introduced into the DCS system of the blending tank area through communication, and the liquid level, temperature and other parameters of the storage tanks are displayed on the DCS; Unified replacement of instruments with long service life and outdated technical level.