Page 4 - EniFor2016_Performance_eng

2 Eni for 2016 | Sustainability Performance

Reporting principles

and criteria

Reporting principles

Eni reporting system is prepared in accordance with evolution of Eni’s performance. Individual exceptions
the principles of balance, comparability, accuracy, are appropriately reported in the text.
timeliness, reliability and clarity (reporting principles), The 2014 and 2015 data are different from those
as defined by the Global Reporting Initiative – GRI “G4 included in the 2015 report due to the perimeter
Sustainability Reporting Guidelines”. variations, compared to the previous year, and also as
Key Performance Indicators, selected according to items a consequence of the consolidating effect of the data
identified as the most relevant, are collected on an that were only made available after the publication of
annual basis. The data gathering process is structured these documents. For the same reason, the 2016 data
to ensure the comparability of data over several years, represent the best estimation with the data available
in order to allow a correct reading of the information at the time of writing this prospectus.
and a full vision to all stakeholders interested in the

Calculation methods

The methods used to calculate the injury frequency For comparison between years, the data for 2014 have
and severity rates, the refining energy intensity index, been taken as the baseline (100%). In order to highlight
the emission indices, the value added and the value medium- and long-term sector specific performance on
generated by research are shown below. CO and pollutant emissions, water withdrawals and energy
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With regard to safety performance, injury frequency efficiency, three indices have been defined to represent
and severity rates and the total recordable injury rate the following operating contexts: hydrocarbon production,
are shown for employees and contractors separately. refining and electricity generation. These indices take into
The frequency index is calculated as the ratio between the account the substantial differences in working conditions
number of injuries leading to absence from work (including recorded over the years and allow for performance
fatalities) and millions of hours worked; the severity index comparison by normalizing the emissions based
is defined as the ratio between days of absence due to on operating data. The refining indices refer to traditional
injuries (excluding fatalities) and thousands of hours refineries only and are calculated based on input quantities
worked; the total recordable injury rate is the ratio between processed (raw materials and semi-processed products),
total recordable injuries (sum of injuries leading to days of the hydrocarbon production indices cover gross operated
absence, including fatalities, work restrictions and medical production, and the energy sector indices measure
treatments) and millions of hours worked. electrical and thermal energy produced in equivalent kWh.
Days of absence are calculated starting from the day after Greenhouse gas (GHG) emissions are related to CO , CH
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the event. The refining energy intensity index represents (methane) and N O (nitrous oxide); methane and nitrous
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the total value of energy actually used in a given year oxide are converted into CO eq using a Global Warming
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in the various refinery processing plants, divided by the Potential (GWP) of 25 and 298 respectively.
corresponding value determined on the basis of predefined Value added represents the wealth generated by the
standard consumption values for each processing plant. Company in carrying out its activities.