When I read heading I thought it is general question for which 1 answer is okay. But when I read 200 litres I thought I will dig out a bit and write few more stuff.
I found few related question on Methanol Institute
What kinds of drums are recommended for methanol storage, only steel or are some plastics acceptable?
Well there is no Global Standards, but according to Methanol Institute following care should be taken.
Mild steel is usually selected as the construction material for methanol storage containers.
- If moisture and trace amounts of inorganic salts are expected to exist within the container from time to time, then one should consider upgrading from carbon steel to 316 L stainless steel, or even a titanium or molybdenum stabilized grade of 316 L stainless steel
plastic storage containers are more susceptible to physical damage than metal ones (e.g., if dropped or hit by a forklift).
Pure anhydrous methanol is mildly corrosive to lead and aluminum alloys, and more so to magnesium, and platinum. Methanol-water solutions can be corrosive to some non-ferrous alloys depending on application and environmental circumstances, including copper alloy, galvanized steel, and aluminum alloy components, and some plastics and composites.
What types of extinguishers should be used to put out small methanol fires?
Large methanol pool fires are best extinguished with Alcohol Resistant Aqueous Film Forming Foam (AR-AFFF) with 6% foam-water proportioning equipment.
accidents involving methanol spills, what is the recommended evacuation distance?
The 2008 edition of the Emergency Response Guidebook (ERG2008) recommends an immediate isolation distance of 150 feet (50 meters) in all directions.
What precautions are needed when welding or torch cutting tanks or containers that were used to store methanol?
It has the potential to catch fire when hot work such as, welding, brazing, soldering, cutting, heat treating, grinding, and using power-actuated tools, is performed near methanol sources. When mixed with air, methanol can burn in the open. Methanol spills may travel short distances (yards or meters) along the ground before reaching a point of ignition and flashing back. The hazards associated with hot work can be reduced by implementing an effective hot work program that includes prior work authorization, safe welding practices, and a fire watch.
I think you should read all the questions I have provided in the beginning of Answer