Data Cleaning (or Data Scrubbing)
Data Communication Equipment (DCE)
DC (Direct Current) Decoupling Device
DCF (Discounted Cash Flow) Analysis
DCF (Discounted Cash Flow) Analysis Method
DCS (Distributed Control System)
DDoS (Distributed Denial of Service)
DDT (Dichlorodiphenyltrichloroethane)
Deactivation and Decommissioning (D&D)
Decentralisation (Decentralization)
Decommissioning Process for Nuclear Power Plant
Defined Contribution (DC) Plan
Department of Energy & Climate Change (DECC)
Design Basis (or Basis of Design)
Design Intent Documentation (DID)
Destructive Examination or Testing
Desulphurisation (Desulfurization)
Detailed Design and Engineering
Detailed Engineering Deliverable List
Detailed Network Schedule (Level 4 Schedule)
Detailed Report Schedule (Level 5 Schedule)
Detonation Momentum Attenuator
Diaphragm Valve (or Membrane Valve)
Diffusion Limited Current Density
Diffusivity (or Diffusion Coefficient)
Dioxins and dioxin-like substances
Direct Hire Construction Labour
Direct Methanol Fuel Cell (DMFC)
Direct Proportion (or Direct Variation)
Distributed Energy Resource (DER)
Distribution P&ID for the Flare Header
DJIA (Dow Jones Industrial Average)
Document Review and Approval Category
Document Review and Approval Procedure
Document Review and Approval Cycle
Document Revision Numbering System
Domestic Processed Output (DPO)
DOT (Department of Transportation)
Double Taxation Treaty (or Agreement)
Dow Chemical Exposure Index (CEI)
Downward Quantity Tolerance (DQT)
DPMO (Defects per Million Opportunities)
Drawing Index (or Key Drawing Index)
Drawings of Platforms, Ladders, Handrails and Stairs
Dual Fuel (or Flexible Fuel) Vehicle
Durable Good