"Frontier Driller" Offshore Oil Rig
10 DC Drive Bays, 4 Generator Control Bays and much more...
 As
we mentioned last month we will be highlighting the Frontier Drilling project
in greater detail.
The name of the vessel is the Frontier Driller. It is an older rig that is
being completely re-furbished with new equipment. Joliet Technologies is responsible
for the DC Drives, Generator
Controls, Switchgear, MCC's (Motor Control Centers), PLC's
(Programmable Logic Controls), Transformers, Driller's
Console and Mud Pump Console.
Let's start with the DC Drive Bays (shown to the right). Joliet Technologies
manufactured 10 DC Drive Bay cabinets for this project controlling a total
of 16 DC motors. Each custom drive cabinet has 2 Siemens
6RA70 DC Drives. Utilizing the load sharing capabilities of the 6RA70 each
drive cabinet will have multiple assignments.
In the photo to the right (looking into the rear of the cabinet) you can see
the 2 Siemens 6RA70 drives at the top, side by side. The bottom rear portion
of the cabinet has all the DC contactors and DC motor armature connections
for each motor that the drive bay can control. This particular drive bay will
run up to 5 different motors. The other drive bays will have anywhere from
3 to 5 assignments.
Each drive assignment is connected to an Isolation Switch for safety. This
allows any DC motor to be completely isolated and locked out for maintenance
and repairs.
 The
front of each drive bay (shown at left) has pilot lights for each assignment
for that bay. Amp meter and volt meter for the DC drive the motor is being
run from. Selector switch (Off/Drilling/Marine) to select the function for
that assignment. Keypad for each of the Siemens 6RA70 DC drives. All drive
bays have 2 cooling fans at the top of the control section doors, drip shield
and light, grab bar and a 3000Amp draw out circuit breaker. The very bottom
front of each drive bay has the 600VAC main bus.
 Each
drive assignment will run a GE 752 DC Traction Motor (shown at right). There
are a total of 16 of these motors on the vessel controlling 4 Mud Pumps (8
motors total), 4 Anchor Winches, 3 Drawworks and Rotary Table. Typically these
motors are the workhorses on most drill rigs.
Each DC motor can be run from as many as 3 different drive bays. There are
many reasons for this. For example, if maintenance or repairs are required
on 1 drive bay, another drive bay can be used. Also the DC drive bay lineup
is separated into 2 sections, each having 5 drive bays, so if 1 section is
down
the rig will still be functional.
As of June 2007 we are very close to the completion of the manufacturing portion
of this project and have started the testing phase. We will be shipping 5 DC
drive bays and 1 of the 2 Isolation Switch bays after completion of testing
and DNV approvals.
Joliet Technologies is an OEM that custom packages, integrates
and engineers AC Variable Frequency Drives (VFD), DC Variable Speed Drives
(VSD) and AC Drive Controllers. Our drive systems integrate top of the line
manufacturers, like ABB, Emerson (Control Techniques & Saftronics / Fincor), Siemens and WEG to name a few. Our added value custom drive packages are built to
your specifications for your application.
To get a Quote for your specific requirements,
Contact Joliet Technologies
today.
Call (815-725-9696),
Toll Free (866) 492-9888,
Fax (815-725-9393) or
E-mail your requirements and we will prepare a detailed quote for your
application.
Or fill out a Request for Quote.
|
1724 Tomich Court