Fact Sheet

ManualsBrandsGE ManualsGenerator Control & ProtectionGE Engineering Design Packages

GE Energy

Those who have ever been responsible for retrofit projects know

that they are significantly more complicated than new, greenfield

projects. The existing plant infrastructure presents real challenges:

equipment, piping, cable trays, and electrical conduit must remain

in place; prints are usually not up-to-date; onsite activities need to

be coordinated, in order to avoid impacting other activities; and

there is a limited time window to accomplish all the outage goals.

GE is very familiar with these constraints, having executed

literally hundreds of controls retrofit projects, large and small,

on the following major systems:

• Excitation systems

• Turbine control systems

• Drive systems

Although every project is different, GE has found that the following

deliverables are very common, to varying degrees, across all

these projects:

New Electrical Drawings

• Cabinet and termination drawings

• Cable schedule

• Conduit and tray schedule

• Cable drawings

• Conduit and tray drawings

Equipment Layout Updates

• Equipment location (on layout drawings)

• Operator panel modification designs

Structural Design and Mounting

• Mounting and anchoring

• Structural analysis

• Structural modification designs

Existing Electrical Drawing Updates

• Plant system drawings

• MCC and power distribution

• Loop diagrams

• Conduit and tray drawings

Contractor Specification

• Electrical takeoffs

HVAC Upgrade Design

Plan for Success

These deliverables constitute an Engineering Design Package

(EDP). Not every project team considers an EDP during the

planning stages, but it is very important to have an EDP for a

successful, on-time project. Although an EDP does not guarantee

that a project will proceed without any surprises, it does allow

the team to anticipate problems before they occur.

Engineering Design Package

fact sheet

Summary of content (2 pages)

PAGE 1
GE Energy fact sheet Engineering Design Package Those who have ever been responsible for retrofit projects know that they are significantly more complicated than new, greenfield projects.
PAGE 2
fact sheet Here is a typical case. A utility power generation customer was upgrading multiple units; the scope of work on each unit was a new hydraulic skid (for BFPT’s), and a new local operator panel. There was no EDP requested on the first unit. The project was completed satisfactorily, but because the project teams had to deal with events as they occurred, the schedule inevitably shifted. On the second unit, the customer insisted on an EDP up front, and the project proceeded smoothly.