INNOVATION May-June 2017

2016 | ❖

2017 Project Highlights

Vessel provides high-performance emergency response

Protector is designed to support emergency medical services, diving and pollution response activities, and to act as an incident command and control centre for emergency response. Fitted with a military-grade air-filtration system, it can also be operated in areas contaminated with hazardous chemical, biological, radiological and nuclear materials (CBRN). Protector measures 33 metres long, 10.7 metres across the beam, and 4.6 metres in draft. A cycloidal propeller system provides highly accurate control for maneuvering and positioning. APEGBC members, Design team: Henry Reeve, P. Eng., Hans F. Muhlert, P. Eng., Robert G. Allan, P. Eng., Darren Hass, P. Eng., Allan Turner, P. Eng. 99 percent of incoming water is treated, and the residual solid waste is composted and mixed into topsoil. Innovative design features and a small energy footprint enable production of 116 megalitres/day of safe drinking water for Nanaimo’s growing population until well past 2035, and an end to boil- water advisories. Trench construction involved dredging of the seabed and blasting rock, requiring extensive environmental monitoring. Eelgrass was harvested before dredging for transplanting, daily turbidity levels and acoustic and over pressure were monitored during blasting to limit construction impacts on marine life. APEGBC members, Opus: Phil Cook, P.Eng., Dennis Harrington, P.Eng., Raymond Chin, P.Eng., Peter Hutchins, EIT. Sub-consultants: WSP, Great Pacific Consulting Ltd., ITB Subsea Ltd., Russ Fogel, Inc., Zentech Cyprus, Limited, CRA Canada Surveys, Inc. APEGBC members, Associated Engineering: Matt Henney, P.Eng., Quinn Crosina, P.Eng., Matthew Lozie, P.Eng., Ken Neave, P.Eng., Lauren Vale, EIT, Alyson Pickett, EIT, Dave Winter, P.Eng., Leif Marmolejo, P.Eng.; Kenaidan Contracting Ltd.; City of Nanaimo Water Resources. (P hoto : W esley H olmes P hotography )

The first of two custom, high-performance fireboat and emergency response vessels built for the Port of Long Beach, California, Protector is designed for emergency response in the era of super-sized cargo ships and post-9/11 security conditions. Advancing the port’s firefighting and security system, the vessel features seven fire pumps that serve an array of 10 water cannons with an aggregate capacity of 9,300 m³/hr, with the largest water cannon alone capable of delivering water at 2,700 m³/hr at a range of 180 metres. Discharge manifolds are fitted to provide shore-side water supply at up to 5,000 m³/hr. In response to changing regulations, the City of Nanaimo, Kenaidan Contracting Ltd. and Associated Engineering collaborated to build a new membrane water treatment plant to provide filtered drinking water to Nanaimo, BC. The South Fork plant takes advantage of local elevation and topography to siphon water through the membranes Opus was lead consultant for design and construction supervision of a new outfall for the Regional District of Nanaimo’s Greater Nanaimo Pollution Control Centre. The $12-million project replaced the original welded- steel outfall pipe with a new outfall of 1,372-millimetre-diameter high-density polyethylene DR21 pipe. The outfall discharges 2,000 metres into the Strait of Georgia towards Five Fingers Island and includes a 100-metre-long multiport diffuser section. The installation used a “float-and-sink” technique, allowing for remote assembly and rapid installation during stable weather. and supply the city by gravity. This eliminates the need for pumps and results in significantly lower energy use. The water is filtered through a two-stage membrane system to remove organics, viruses, protozoa, bacteria, and turbidity. More than

Water treatment plant uses gravity to increase efficiency

Construction and environmental monitoring of outfall replacement

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