United States Nuclear Regulatory Commission - Protecting People and the Environment

Coding Scheme for Human Factors

Within Inspection Reports and Licensee Event Reports (LERs), discussions of human performance problems are coded into one of the following categories (updated January 2006): Training, Procedures and Reference Documents, Fitness for Duty, Oversight, Problem Identification & Resolution, Communication, Human - System Interface and Environment, and Work Planning and Practices. Each identified human performance problem is also assigned an "area" and a "detail" code. See the table below for a listing of the possible codes:

Catagories Areas Details
T Training T1 Initial
T2 Continuing/requal
T3 On-the-job training
100 Training LTA
101 Training process problem
102 Individual knowledge LTA
T4 Simulator training 103 Simulator training LTA
P Procedures and Reference Documents P1 General operating
P2 Abnormal/off normal/alarm condition
P3 Emergency (EOPs & ERPs)
P4 Reactivity control
P5 Maintenance/modification
P6 Surveillance/calibration/test
P7 Chemical/ radiochemical
P8 Refueling
P9 Administrative
P10 Licensing Documents
P11 Special
P12 Other
110 No procedure/reference documents
111 Procedure/reference document technical content LTA
112 Procedure/reference document contains human factors deficiencies
113 Procedure/reference document development and maintenance LTA
F Fitness for Duty F1 Drugs
F2 Alcohol
F3 Mental/emotional
F4 Fatigue
F5 Unknown/other
120 Testing LTA
121 Assessment LTA
122 Behavioral observation LTA
123 Self-declaration LTA
124 Training missing/LTA
125 Work hour control
126 Task design/work environment
127 Circadian factors/individual differences
128 Non-compliance
129 Impairment
O Oversight O1 Oversight 130 Inadequate supervision/ command and control
131 Management expectations or directions LTA
R Problem Identification and Resolution R1 Problem R1 Problem identification 140 Problem not completely or accurately identified
141 Problem not properly classified or prioritized
142 Operating experience (OE) review LTA
143 Tracking/trending LTA
144 Audit/self-assessment/effectiveness review LTA
R2 Problem evaluation 145 Causal development LTA
146 Evaluation LTA
R3 Problem resolution 147 Individual corrective action LTA
148 Action not yet started or untimely
149 No action planned
R4 Corrective action program 150 Programmatic deficiency
R5 Safety conscious work environment 151 Willingness to raise concerns LTA
152 Preventing and detecting retaliation LTA
C Communication C1 Oral
C2 Written
160 No communication/information not communicated
161 Communication LTA
162 Communication equipment LTA
H Human - System Interface (HSI) and Environment H1 HSI components/equipment 170 HSI or availability/quality LTA
H2 Simulator 171 Simulator fidelity LTA
172 Simulator use LTA
H3 Physical work environment 173 Physical conditions LTA
W Work Planning and Practices W1 Work planning and coordination 180 Scheduling and planning LTA
181 Inadequate staffing/task allocation
182 Work package quality LTA
183 Pre-job activities LTA
184 Tag outs LTA
W2 Work practices 185 Procedural adherence LTA
186 Failure to take action/meet requirements
187 Action implementation LTA
188 Work practice or craft skill LTA
189 Recognition of adverse condition/questioning attitude LTA
190 Failure to stop work/non-conservative decisionmaking
191 Team interactions LTA
192 Work untimely
193 Non-conservative action
194 Housekeeping LTA
195 Logkeeping or log review LTA
196 Independent verification/plant tours LTA
W3 Awareness/ attention 197 Self-check LTA
198 Worker distracted/interrupted

(To top of page)

Page Last Reviewed/Updated Monday, May 08, 2017