Octane rating is a key physical parameter used in gasoline specifications. Octane ratings are a measure of the anti-knock properties of a fuel, with a rating of zero assigned to the performance of normal heptane and 100 to iso-octane (2,2,4-trimethylpentane). Fuels with a lower octane level perform less well in a given engine.
Operating rate is calculated by dividing production by capacity for a given product in a given region. This is a key feature in determining profitability for a given product.
Outside Battery Limits (OSBL)
Outside Battery Limits (OSBL) is a term that refers to all equipment items that are solely related to the process operation, but are outside the actual requirements of immediate operation. This includes the majority of feedstock and product storage, any packaging and logistical operations, the control room etc.