No need. If it is an ordinary nozzle, it doesn't matter if it is twisted off, but the ordinary nozzle has only one splash plate, so it is the same from top to bottom. If it is a self-supporting meeting, just change it to a drooping meeting, without reporting to the fire department.

It depends on whether the fire sprinkler system is dry or wet. Generally speaking, the southern region generally adopts wet method. If there is water in this water pipe, it has to be stopped. If it is dry, there is no water in the pipe. Turn off the water should be near the alarm valve group, because this water comes down from the balcony water tank and then goes upstairs through the pipeline.

Extended data:

The fourth chapter of the Regulations on Supervision and Management of Fire Protection in Construction Projects is the filing and spot check of fire protection design and completion acceptance.

Twenty-fourth completion acceptance for the record within 7 days, accepted by the fire department of the public security organ, provide materials:

Provide the fire control institution of the public security organ with a filing declaration form, copies of relevant materials and construction permit documents as stipulated in Article 15 of these Provisions or relevant materials as stipulated in Article 21 of these Provisions.

In accordance with the relevant provisions of the administrative department of housing and urban and rural construction, the construction drawing review shall also provide a copy of the qualified documents issued by the construction drawing review agency. The purpose of fire protection filing is to quickly respond to sudden fires in construction projects and control disasters, which is conducive to higher work efficiency of fire departments.