ABSTRACT

Saipem has developed and is implementing for its fleet a Spill Risk Assessment and Oil and Chemical Mapping methodology aimed at creating for each vessel a comprehensive reference document containing the spill risk for the equipment on board and the conditions that may result in a spill to the environment. In this way appropriate mitigation measures can be chosen, prioritized and implemented more effectively.

INTRODUCTION

Saipem is ISO 14001 certified and it is rated in a number of environmental and sustainability indexes. Furthermore, the interest of Saipem's stakeholders in spill prevention and response continues to increase. For the last two years the Materiality Assessment conducted among both internal and external stakeholders showed that spill prevention and response is a very important topic on their agenda. To this end, Saipem is strongly committed to improve both ‘Prevention’ and ‘Preparedness’.

To this end, Saipem introduced two activities for its vessels: the Spill Risk Assessment (SRA) and the associated Oil and Chemical Mapping (OCM). The process started already in 2016 when all vessels were required to produce a list and a mapping of the equipment and storage areas on board and continued in 2017 with the development of a detailed SRA methodology that is currently being deployed on all Saipem fleet.

METHODOLOGY

The SRA aims to evaluate the spill risk for the equipment on board Saipem vessels and the conditions that may result in a spill to the sea. This evaluation, which combines the experience of personnel on board with a rigorous and consistent methodical process assigns a risk level for every equipment on board in order to understand whether the risk is unacceptable, if any risk mitigation measures could be implemented and to choose / prioritize them appropriately.

The process consists of three different steps:

  1. Identifying and listing all the equipment capable of generating spills of oil or of other substances hazardous to the environment: for each equipment several details were required, such as: name of equipment, location, name and quantity of oil / chemicals contained, existing barriers, etc.

  2. At a later stage, an additional set of parameters were required to be provided for each equipment, thus enabling the risk to be assessed by evaluating the:

    • Probability of release, considering details such as:

      • Wear and tear of the equipment (if equipment is subject to weather or possible impacts, the type of usage - e.g. often dragged across hard surfaces, the frequency of usage

      • Frequency of the maintenance;

      • Spill history of the equipment, and of other similar equipment in Saipem and in the Oil & Gas sector (if any);

      • Condition of the equipment during the spill risk assessment inspection., etc.)

    • Magnitude of the consequences for the environment, calculated based on:

      • Evaluation of the maximum amount of substance that could be spilled from the equipment: quantity of substance contained, pressure of the equipment, response time before a spill could be stopped;

      • Evaluation of how much of the substance spilled could affect the environment: spill barriers in place;

      • Evaluation of the damage to the environment: toxicity for the environment of the substance spilled.

  3. Considering the risk level for each equipment, choosing the best prevention and mitigation measures.

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