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NEBB - SCR Switchboard Cards

SpinTec has a considerable experience in maintenance of certain SCR control systems used aboard semisubmersible oil drilling rigs.

SpinTec was contracted by Dolphin Drilling Ltd in 2001. We refurbished the NEBB designed SCR control system on Rack level and on Card level aboard Bulford Dolphin (ex Transocean Discoverer). The NEBB SCR control aboard Dolphin Drilling controls the power distribution to the electric motors, used for: Top Drive, Rotary Table, Draw Works, Mud Pumps, Anchor Winches and Propulsion.

Nowadays, SpinTec provides Dolphin Drilling (a subsidiary of Fred Olsen Energy) with services and spare parts relative to SCR system maintanance for NEBB designed systems.


semisubmersible rig   rack

 

Spare parts for NEBB - SCR control systems
We currently provide the following services for the cards listed in the table below:

  • repairs
  • refurbishment
Reference Number Drawing Number Card Description Hardware
Configurable
ML001 Na NL 454 059 Voltmeter
No
ML002 Na NL 454 056 Channel Indication Card
No
UX001 Na NL 454 054 Polarity Sensor. Direction / Speed / Braking
No
LR38 a NL 434 608 Multiplexer Master / Slave
No
UR001 Na NL 454 030 SCR Protection, Torque Limit / Overcurrent
No
FD005 Na NL 454 370 Alarm Diode Matrix
Yes
FZ001 Na NL 454 043 Torque Controller and Boost Limiter
Yes
SX002 Na-E NL 454 055 Field Current reference controller
No
KT047 Na NL 454 367 Power Supply Regulator
No
DD11 a NL 434 567 Diode Array: field, armature cur. clamping pulse feedback
No
FR003 Na NL 454 044 FCD Automatic Controller
No
LR054 Na NL 454 177 Reed Relay Multiplexer
No
FD006 Na-E NL 454 369 Diode Matrix
Yes
SX001 Na NL 454 041 Soft Reference Controller
Yes
RZ001 Na NL 454 045 Motor Speed Regulator
Yes
SP001 Na-E NL 454 283 Active Power Limit
No
RT13 d NL 434 598 Filed, Armature current ctrl & Pulse Generator
No
LT015 Na NL 454 060 Filed / Armature current firing Pulse Amplifier
No
UV060 vb-E Pos NL 454 773 Field Current feedback and 2 filters
Yes
GT10 e NL 434 599 Armature Pulse Generator
No
NL63735 NL363735 SyncBoard = Tri Phase PLL
No
CV11a NL 500360 or NL 444360 Alarm Control
Yes

 

ML 001 Na
ML 002 Na
ML001 Na original front and card
ML002 Na original card
   
   
UX 001 Na
LR 38a
UX001 Na original card
LR38 a original card
   
   
UR 001 Na
FD 005 Na
UR001 Na original card
FD005 Na original card
   
   
FZ 001 Na
SX 002 Na-E
FZ001 Na original card
SX002 Na-E original card
   
 
KT 047 Na
DD 11a
KT047 Na original card
DD 11 aoriginal card
 
 
FR 003 Na
LR 054 Na
FR003 Na original card
LR054 Na original card
 
 
FD 006 Na-E

SX 001 Na

FD006 Na-E original card
SX001 Na original card
 
 
RZ 001 Na
SP001Na-E
RZ001 Na original card
SP001Na-E original card
 
 
RT 13d
LT 015 Na
RT13 d original card
LT015 Na original card
 
 
UV 060 vb-E Pos
GT 10e
UV060 vb-E Pos original card
GT10 e original card
 
 
Syncboard
CV11a Alarm Control card
Syncboard original card
CV11a Alarm Control card
 
 
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