legal analysis: the smoke collection hood and flue entrance in the operation room of catering business units should be cleaned every day within 1 meters. The fume exhaust pipeline in the Chinese food operation room shall be cleaned at least 1 times every 61 days, and the cleaning shall be recorded.

Legal basis: Beijing Fire Protection Regulations

Article 32 Food production and processing, catering service enterprises and unit canteens shall clean fume collection and exhaust facilities such as fume hoods and fume exhaust pipes in accordance with relevant regulations of this Municipality.

Article 86 If food production and processing enterprises, catering service enterprises and units with canteens fail to clean the fume collection and exhaust facilities such as smoke collection hoods and fume exhaust pipelines in accordance with the cleaning specifications of this Municipality, they shall be ordered to make corrections and may be fined between 1,111 yuan and 5,111 yuan; If a fire is caused, a fine of not less than 1,111 yuan but not more than 31,111 yuan shall be imposed.