Hospital includes sophisticated electrical system

Meeting the demands of a growing population, Florida Hospital Memorial Medical Center in Daytona Beach, Fla., embarked on 12-story, 245-bed replacement hospital in 2004.


Florida Hospital Memorial Medical Center in Daytona Beach, Fla. Courtesy: Robins and MortonTo meet the demands of a growing population, Florida Hospital Memorial Medical Center in Daytona Beach, Fla., embarked on a new 12-story, 245-bed replacement hospital in 2004.

The need for adequate space was a primary concern when master-planning the new facilities. All of the patient rooms are private and sized to comfortably accommodate patients, visitors, and equipment. The Birthcare Center includes a Level 1 nursery, labor, delivery, recovery, postpartum, and two Caesarean-section operating rooms. The 52-bay emergency department includes a fast-track area, and the heart center includes five catheterization labs, four cardiovascular operating rooms, a 14-bed cardiovascular care unit, and a 36-bed coronary critical care unit. The surgical suite includes 11 state-of-the-art operating rooms and four endoscopy rooms. The hospital includes a 3,500-sq-ft Tier 3 data center powered by an independent 100 kW UPS.

When the project was completed in 2009, the $151 million facility was an impressive 603,000 sq ft with a detached 17,400-sq-ft central energy plant. The central energy plant housed dual 4,000-amp electrical services; three parallel 2 MW generators; and four 900-ton water-cooled chillers, four cooling towers, three 3,600-hp hot water boilers, and a 50-hp steam boiler.

The dual-fed electrical service with ground fault protection and the parallel generators presented a grounding fault path sensing challenge. A differential ground fault sensing system was incorporated into the switchboards circuit protection to provide accurate sensing of ground currents in multiple locations within the system. This circuit protection system measures and sums the disparately sensed currents to ensure that ground fault current levels are accurately reported, regardless of power source. The code does not permit ground fault tripping of emergency feeders, so ground fault current monitoring and alarms were incorporated into all emergency feeders.

Each operating room within the facility is equipped with dual isolation power systems that are housed in a single enclosure. Each isolation power system is supplied by two critical branch feeders from separate transfer switches (see exception No. 2 in NEC 517.19) to assure the highest level of electrical service integrity.

In general, the facility required static trip circuit breakers on every feeder breaker 400 amps and larger to assure selective overcurrent device coordination. The bid documents included 119 time-current curve coordination studies, which demonstrated selective coordination of all specified circuit protection.

No comments
The Top Plant program honors outstanding manufacturing facilities in North America. View the 2013 Top Plant.
The Product of the Year program recognizes products newly released in the manufacturing industries.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
A cool solution: Collaboration, chemistry leads to foundry coat product development; See the 2015 Product of the Year Finalists
Raising the standard: What's new with NFPA 70E; A global view of manufacturing; Maintenance data; Fit bearings properly
Sister act: Building on their father's legacy, a new generation moves Bales Metal Surface Solutions forward; Meet the 2015 Engineering Leaders Under 40
Cyber security cost-efficient for industrial control systems; Extracting full value from operational data; Managing cyber security risks
Drilling for Big Data: Managing the flow of information; Big data drilldown series: Challenge and opportunity; OT to IT: Creating a circle of improvement; Industry loses best workers, again
Pipeline vulnerabilities? Securing hydrocarbon transit; Predictive analytics hit the mainstream; Dirty pipelines decrease flow, production—pig your line; Ensuring pipeline physical and cyber security
Upgrading secondary control systems; Keeping enclosures conditioned; Diagnostics increase equipment uptime; Mechatronics simplifies machine design
Designing positive-energy buildings; Ensuring power quality; Complying with NFPA 110; Minimizing arc flash hazards
Building high availability into industrial computers; Of key metrics and myth busting; The truth about five common VFD myths

Annual Salary Survey

After almost a decade of uncertainty, the confidence of plant floor managers is soaring. Even with a number of challenges and while implementing new technologies, there is a renewed sense of optimism among plant managers about their business and their future.

The respondents to the 2014 Plant Engineering Salary Survey come from throughout the U.S. and serve a variety of industries, but they are uniform in their optimism about manufacturing. This year’s survey found 79% consider manufacturing a secure career. That’s up from 75% in 2013 and significantly higher than the 63% figure when Plant Engineering first started asking that question a decade ago.

Read more: 2014 Salary Survey: Confidence rises amid the challenges

Maintenance and reliability tips and best practices from the maintenance and reliability coaches at Allied Reliability Group.
The One Voice for Manufacturing blog reports on federal public policy issues impacting the manufacturing sector. One Voice is a joint effort by the National Tooling and Machining...
The Society for Maintenance and Reliability Professionals an organization devoted...
Join this ongoing discussion of machine guarding topics, including solutions assessments, regulatory compliance, gap analysis...
IMS Research, recently acquired by IHS Inc., is a leading independent supplier of market research and consultancy to the global electronics industry.
Maintenance is not optional in manufacturing. It’s a profit center, driving productivity and uptime while reducing overall repair costs.
The Lachance on CMMS blog is about current maintenance topics. Blogger Paul Lachance is president and chief technology officer for Smartware Group.