Hi Romain,
On steel mill tagging, I think there are at least three ways of tagging
that are in reasonably common use - `industrial=steelmaking` is also used.
I've been told this is a fairly contentious topic! Is the overall feeling
these days that `man_made=works` is the preferred trend?
At risk of derailing my own thread, my thoughts on `man_made=works +
product=steel` is that it's probably too unspecific. It covers both a works
that produces steel from raw materials ("steel mills/steel works" in
colloquial terms), as well as a location that processes steel from one form
into another form (rolling mills, slitting mills, coating facilities, steel
fabricators, ...). Not differentiating between the two confuses any
analysis using OSM data on topics like supply chains, pollution,
employment, etc.
Differentiating with different `product=` values doesn't seem sensible -
both types of works "produce steel", and getting into specific types of
steel doesn't help. The two `landuse=industrial + industrial=x` tags do
allow that differentiation. Is there any existing or proposed tagging
scheme under `man_made=works` to encode that level of detail?
Cheers,
Daniel
On Fri, 26 Apr 2024 at 07:48, _ _ <robainloy...@gmail.com> wrote:
> Hi Daniel !
>
> The third seems to me the best solution if there isn't already a tag. This
> will allow you to add information rather than modify existing ones.
>
> I'd like to point out that there's also another way of tagging steel
> mills: man_made=works + product=steel wich is way more common (260 times
> while industrial=steel_mill is used 70 times)
>
> Have a nice day !
> Romain
>
> Le jeu. 25 avr. 2024 à 23:14, Daniel Evans <daniel.fred.ev...@gmail.com>
> a écrit :
>
>> Hi all,
>>
>> In the steel industry, a process which has started gaining adoption in
>> recent years is the production of steel from Direct Reduced Iron (DRI),
>> rather than from pig iron produced from iron ore in a blast furnace.
>>
>> To give context, the two existing widespread methods of steel production
>> are:
>> * Blast Furnace + Basic Oxygen Furnace (BOF), where the blast furnace
>> produces pig iron from iron ore, and the BOF refines it into steel
>> * Electric Arc Furnace (EAF), where scrap steel and/or pig iron is
>> refined into steel
>>
>> In contrast to this existing arrangement where the inputs are converted
>> to steel within a single facility, a number of DRI facilities have been
>> built independently of existing steel mills (often supplying EAF
>> facilities). The solid pig iron is then transported to steel mills for
>> further processing, either within a single company's range of sites, or
>> sold on the open market to steel producers.
>>
>> For the time being, DRI plants remain less common, but most large
>> steelmakers are investing in the technology for decarbonisation and cost
>> reasons.
>>
>> How should DRI plants be tagged? I can see three options:
>>
>> 1. DRI plants receive a separate `industrial=???` tag to differentiate
>> them from steel mills, because of the technical argument that they do not
>> produce steel, only pig iron, the precursor to steel.
>>
>> 2. DRI plants are tagged as `industrial=steel_mill` with no
>> differentiation from normal mills, because they're very closely associated
>> with steelmaking. Additionally, OSM currently has very minimal industrial
>> tagging (both in terms of the accepted tags, and how many sites are
>> tagged), and so a special tag for such a small number of sites isn't worth
>> it yet.
>>
>> 3. A new tag such as `steel_mill:process` is introduced to differentiate
>> between different steel mills, with values along the lines of `integrated`
>> (blast furnace+BOF), `basic_oxygen`, `electric_arc`, and
>> `direct_reduction`. It is easy to determine what value is appropriate to a
>> plant based on aerial photos or public information.
>>
>> An example of an independently located DRI plant is Cleveland-Cliff's
>> Toledo plant: https://www.openstreetmap.org/way/758332131
>> And US Steel is reportedly investing in DRI facilities at its iron ore
>> mines:
>> https://gmk.center/en/news/us-steel-completes-pilot-project-in-minnesota-to-produce-dr-pellets/
>>
>> Cheers,
>> Daniel
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>
>
> --
> Romain
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