SITE PLANNING FOR AN INDUSTRIAL GENERATOR INSTALLATION
Thứ hai - 23/12/2019 22:27
This article explores different options available for various types of emergency generator applications. The applications discussed include generators exposed to weather and generators located inside of a facility.
• Permanent enclosed generator – Complete generator system housed in an enclosure that is located on gravel or concrete pad.
• Portable enclosed generator – Generator system housed in an enclosure that is mounted on a trailer frame. Commonly used in construction sites. Easiest to complete initial setup on because unit is self-sufficient.
• Generators located inside of a facility – Often can have redundant backup. Facility generators can be fueled by natural gas or diesel fuel. Day tanks are common in diesel fuel applications.
Permanent Enclosed Generator
When setting up the site always use the generator manufacturer, state and federal guidelines. It is helpful to design a basic drawing of the generator and supporting systems (Figure 1). Some considerations to be made are:
• Generator located with enough clearance between building and fuel supply to allow major maintenance.
• Physical size of generator (21 ½’ x 11 ½’).
Always consult local, state and federal regulations when designing the generator area. Spill containment should be considered. Fuel stored between back up fuel tank and generator fuel tank is 1200 gallon. This allows for 16 hours of continuous operation at full load.
Concrete Pad Design
It is not advised and against many building codes to place a generator set on gravel. The generator must be kept level and vibrates during operation and must be secured to a permanent structure. Concrete is the industry standard for normal soil applications.
The thickness and size of the pad is controlled by soil composition among many other geographical considerations. Consult all federal, state, and local authorities when determining the following:
• Ambient temperature for concrete pour (quick setting or normal). Fresh pours must be utilize vibration to insure all air bubbles are dissipated.
Securing the generator set and backup fuel supply tank is usually completed using concrete anchors (Figure 3). There are many options for anchoring equipment to concrete:
• Heavy Duty Anchor – Installed prior to concrete pour. Taking good mounting measurements imperative.
Portable Enclosed Generator
Portable generators require less site preparation than any other style of generator. They are offered in a variety of sizes from the Caterpillar 320 kW to the Baldor 2000 kW. Often portable generators are used in construction site applications supplying main power.
One advantage of using a portable generator is that it can be moved to different locations at the same job site for power requirements as the job progress. A Baldor 2000 kW generator is required to satisfy power requirements on a construction site. Preparing the site for the arrival of the generator can include the following:
• Road established to location(s) of generator.
Generators Located Inside Facility
Generators that are purchased to be located inside a facility are most commonly a self-contained system (Figure 5). The engine, generator and engine cooling system are placed on a skid and factory aligned for operation. When moving the generator into the facility consider the following:
• Clearance – Enough for generator to be moved and placed onto concrete pad.
Preparing a facility for a generator set installation (Figure 6) has a few additional steps. Setting up generator set mounting and auxiliary systems prior to installation can save system down time. Always consult federal, state and local authorities for regulations prior to beginning site preparation. The below items can be performed prior to setting the generator set:
• Concrete pad – Located appropriate distance to allow for generator maintenance. Concrete to regulations.
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