Project: Stormwater drainage system, water supply distribution and fire-fighting system for the new cargo quay in Shengjin (Albania)
Location: Shengjin, Albania
Client: European Union, Delegation to Albania
Cost of total Works: € 3,200,000 € 84,600 (stormwater drainage system) € 5,300 (water supply system) € 80,300 (fire fighting system)
Services: Detailed design
In the context of the huge scheme to develop and upgrade the Albanian transport network, being implemented in accordance with the National Transport Master Plan of 2006 and the Albanian National Transport Strategy, are the works planned for modernizing and developing maritime transport infrastructures, thereby contributing to the integration of Albania in the European Maritime System. The present project is an integral part of the implementation of the Shengjin Port Master Plan, which is being developed to increase port capacity and navigation safety, and includes the construction of a new quay for general cargo handling approximately 100 m long, located in proximity of the existing jetty in Shengjin Maritime Port and a new paved operating yard approximately 100 m long and 45 m wide located behind the quay, provided with all necessary infrastructures and facilities (utilities, drainage, bollards, fenders, etc.) including:
- a drainage system in order to catch the stormwater insisting on the new quay areas and discharge to sea
- a potable water supply system suitable for the quay operations or vessels needs
- a fire-fighting system in according with the European standard requirements for ports and storage areas
Stormwater is collected through a drainage system composed of linear HPDE channels, for the collection of the surface run-off, discharging into the underground pipelines through the inspection manholes. These pipelines convey the water to a large manhole before the outfall to the sea: a sluice gate is mounted at the outfall of this manhole in order to block the flow discharge in case of hazardous spills occurring on the quay or for maintenance operations on the system.
The new general cargo quay and operating yard will be equipped with a potable water distribution system in order to meet the needs of vessels and docking operations. The quay water supply system is based on a pipe connected to the existing water supply pipe (HDPE DN80-De90 mm) near the Port entrance and placed along the dock, in between the new crane railway structures. The connections to the new supply pipe will be placed underground in order to minimize interferences with vehicles.
The new quay will be provided with a fire-fighting system designed in according with Italian and European standards. In particular, this includes the design of fixed fire extinguishing systems provided in the quay through underground hydrants, in accordance with UNI 10779, and the pressurizing unit designed as per EN 12845 standards. In order to design an adequate fire-fighting system, a preliminary fire risk assessment for the area has been performed: since the main activities on the new quay do not involve hazardous substances or dangerous activities, the area is classified as a medium risk level (level “2”). This risk level implies that for the fire-fighting system, the design had to consider 4 hydrants (male outlets) for simultaneous operation, a flow-rate of 300 l/min and a residual pressure of 3 bars at the furthest hydrant. In compliance with the UNI requirements, the total flow requested for the fire fighting system has to be at least 20 l/s, and since the supply of potable water to the port area is estimated to be 20 l/s maximum, with a head of 5 atm (˜ 5 bars), a pumping unit has been provided for the fire fighting system.
For the design of the fire-fighting pipes, in the lay-out considered, the flow-rate of 20 l/s is divided into 5 l/s for each hydrant. Through the evaluation of the losses along the pipes it is possible to define the total head necessary to satisfy the UNI Standards requirements (minimum 3 bars for the furthest hydrant).