Page 538 - Offshore Electrical Engineering Manual

Index 525

Division of labour, 463–464 ECC. See Emergency control centre
Downhole pumps, 131 (ECC)
DP. See Dynamic positioning (DP) ECP. See Emergency control point
DPUs. See Distributed processing units (DPUs) (ECP)
Drainage and bilge pumping, 339 Eddy current loss, 273–274
Draw works, 457 Effective reflectances, 151
Drawing representation, 185–194, 190f, 193f Electric body heaters, 133–134
Drill/drilling, 339 Electric hoists/davits, 344
areas, 160–161 Electric motor(s), 137
connections to, 20 offshore, 121
electrical system, 78 testing, 468f
equipment, 89 Electric shaft driven, 127
mud facilities, 338 Electrical and/or electronic and/or programmable
string, 457 electronic (E/E/PE), 168
supplies, 9–11, 78 Electrical cables
system, 20 bus ducting, 98
Drilling essentials. See also Production installation, 95–96
process essentials for intrinsically safe circuits, 99
blowout preventer, 458 recommended stainless steel cleating/banding
Christmas trees, 459 intervals, 96t
deviated drilling, 459–460 selection, 93
draw works, 457 spreadsheet-generated cable sizing
mud pumps, 457–458 chart, 94f
perforation, 459 transits, glands and connectors, 96–97
rotary table, 457 Electrical current, 13
shale shaker, 458 Electrical distribution system, 229
subsea completions, 459 Electrical drilling direct current and alternating
top drive, 457 current semiconductor drives, 338
well completion, 458–459 Electrical earths, 289
wireline logging, 458 Electrical equipment schedule, 198, 201f
Driven machinery, abnormalities in, 215–216 Electrical Independent Competent
Dry-type transformers, 174, 175f Person (Electrical ICP), 413.
Drying curves, 379–380, 380f See also Independent Competent
Dual AVR system, 265–267 Person (ICP)
Dual multichannel VHF transceiver, 179 background, 414–430
Dump tank, 173, 344 combined operations, 426–428
Duplication, 387–388 duty holder, 418
Duty holder, 418, 431–432 guidance on developing written schemes of
Dynamic positioning (DP), 327, 335 examination and test, 423–424
class notations, 328t–329t ICP, 418–423
integrated control systems, 330 multiple ICPS/interface with other ICPs,
propulsion redundancy, 330 428–429
reporting activities, 429–430
E retention of verification records, 430
E/E/PE. See Electrical and/or electronic and/or scheme activity list, 424–426
programmable electronic (E/E/PE) Electrical load list, 202, 203f
Earth/Earthing, 289 Electrical power, 133
bonding, 291 module, 21
fault(s), 207, 211 offshore, 3
current, 234–235 Electrical Safety and Operability study
protection, 227–229 (ESAFOP study), 445
relay setting, 257, 259f Electrical SCEs, 16
system, 289 Electrical supplies, 111, 387