Process Description & Equipment Supplied
Dublin Port required a new dedicated pump system to deliver firefighting water at the Dublin Port facility. The pumps were designed to ensure the fire fighting main was pressurised with sea water to 10 bar and to deliver flow rates of approximately 800 lps. DPS was responsible for the supply, installation and commissioning of 5 no. Vertical Turbine Bowl Pumps (WIMES 1.16) to act as the booster set and a single KSB UPA submersible multistage pump (WIMES) to act as the jockey pump for the system. DPS also supported with the design feasibility and scope at an early stage pre-tender.
DPS was subsequently involved from the initial tender stage, working with theconsultant engineers for the project, Jacobs, to develop a detailed specificationfor the pumps, station layout and control philosophy for the system. Thisrelationship was key to ensuring a coherent solution that would allow the site to be optimised for both efficiency and ease of access for future maintenance inorder to drive down Whole Life Cycle Costs.
Particular details to beconsidered during the course of the design were the materials of construction for the pumps to suit sea water with the mechanical seals being of particular concern. Options considered for the mechanical sealsincluded diamond faced to provide the required hardness but ultimately hardfaced silicon carbide were selected with a bespoke quench system designed to flush the seals. The seal quenching system required its own separate pumpingsystem installed on site to deliver flushing water at an adequate flow rate.