For which type of building/storage/factory Wind Sock requirement is applicable?

Dear Seniors ... Kindly guide for following :
1. for which type of building/storage/factory Wind Sock requirement is applicable
2. Is it legally applicable
3. What is the standard dimension for windsock - Is there any standard for the same.
4. For windsock installation is there any location criteria standard.
Please guide me.

It is required to install wind sock at the top of any tall structure in the vicinity of the site. In

case there is a risk of the structure getting damaged during the emergency, it is desirable to

have alternate wind sock(s) as required. At least one wind sock should be visible from any part

of the site. Site personnel have to be trained in reading the atmospheric conditions on the basis

of the status of the wind sock.

It is useful in toxic release that are strongly influenced by wind speed, weather condition, leak rate or mass released at particular place.

Also in Fire Emergency that will guide Fire Fighters for Fire Fighting and General Employees/People for evacuation route from that site.

It may be used in Industries where Chances of Air Pollution / or for studying the Plume behavior of Chimney/ Stack.

In legal back up as per my knowledge there is no direct requirement as per Factories Act but it will under purview of Section 7A(c) General duties of Occupier for providing information / instruction; and Section 41B (4) i.e. preparing Onsite Emergency plan.

Dear Mr Verma ,
Thanks for reply . I am searching for any standard related to it and legal applicability for normal ( including Non hazardous ) Industry
Let us wait for reply from other seniors .
Abhay