How to clean the sink? Is it specified in that standard? ?

In accordance with the requirements of Document No. 10 issued by the General Administration of Work Safety on Urgently Instructing Chemical Enterprises to Thoroughly Carry Out Several Key Safety and Environmental Protection Tasks, all types of chemical manufacturing enterprises must have facilities such as accident tanks or buffer tanks for collecting and treating \"clean wastewater\" in the event of an accident. For those without collection and disposal measures, supplementary design is required to improve them. For chemical projects that have not yet begun construction, the design plans must take full account of measures for collecting and disposing of \"clean wastewater\" in the event of an accident, ensuring that wastewater that does not meet standards does not enter the external environment. But in the event of a risk incident in the future, the \"clean wastewater\" as well as any abnormal sewage generated during such an incident will be collected here and temporarily stored. After the incident is resolved, these waters will be treated; only once they meet the discharge standards can they be released outside. The accident buffer tank must have a sufficient regulating capacity, taking into full account the volume of fire-fighting water and the duration of its supply. There is no clear standard for the capacity of buffer tanks. Most hazardous chemical manufacturing enterprises do not have pipelines leading to wastewater treatment plants; if the actual amount of water used for firefighting exceeds the capacity of these tanks, the firefighting wastewater will overflow into the rainwater pipes, thereby contaminating the environment. However, if the accident buffer pool is made very large, it will inevitably increase civil engineering costs. How to determine the volume of the \"clean effluent\" collection tank in an accident scenario in a cost-effective and reasonable manner remains a topic that requires further investigation. **This emergency notice was issued mainly due to the benzene pollution in the Songhua River. But across the country, due to this emergency notice, it results in wasted effort and resources; however, when it comes to designing and drafting documents on safety measures, one still has to follow the relevant standards and regulations – there’s no alternative.