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Causal Factor/Issue:
START HERE with each causal factor/issue and select or eliminate each category to find root causes.
HUMAN PERFORMANCE DIFFICULTY
EQUIPMENT DIFFICULTY*
NATURAL DISASTER / SABOTAGE
Pages 5-21
OTHER (SPECIFY)
*Note: Consider Equifactor™ Analysis EQUIPMENT / PARTS DEFECTIVE
DESIGN
TOLERABLE FAILURE
DESIGN REVIEW
DESIGN SPECS
REPEAT FAILURE
PREVENTIVE / PREDICTIVE MAINTENANCE
MANAGEMENT SYSTEM
PROCUREMENT PM NI MANUFACTURING
Specs NI
Design Not To Specs
Problem Not Anticipated
Independent Review NI
equipment environment not considered
Human Performance Troubleshooting Guide (15 Questions)
HANDLING
management of change (moc) NI hazard analysis NI
Was a person excessively fatigued, impaired, upset, bored, distracted or overwhelmed?
Yes
PM for Equip NI
QUALITY CONTROL
HUMAN ENGINEERING WORK DIRECTION
corrective action NI corrective action not yet implemented trending NI
NI = NEEDS IMPROVEMENT May also substitute LTA (Less Than Adequate) or PIO (Potential Improvement Opportunity) Team Performance
Pages 22-31
Directions: Answer all questions and then refer to the indicated Basic Cause Categories on the back of this sheet to investigate the causes of the problem.
No PM for Equip
STORAGE
Basic Cause Categories (on back) to investigate
Individual Performance
Corrective Action
Basic Cause Categories (on back) to investigate
Pages 31-33 Did verbal communications Yes or shift change play a role COMMUNICATIONS in this problem?
WORK DIRECTION Should the person have had and used a written procedure but did not?
Yes
Yes PROCEDURES HUMAN ENGINEERING
PROCEDURES
Were alarms or displays to recognize or to respond to a condition unavailable or misunderstood?
Yes
COMMUNICATIONS
HUMAN ENGINEERING
Were displays, alarms, controls, tools, or equipment identified or operated improperly?
TRAINING PROCEDURES
Basic Cause Categories (on back) to investigate
Management System Pages 33-35 Yes
HUMAN ENGINEERING Did the person need more skill/ Yes knowledge to perform the job or to respond to conditions or to understand system response?
Revised 3/20/00 Copyright © 2000 by System Improvements, Inc. Knoxville, Tennessee, USA All Rights Reserved Duplication Prohibited
WORK DIRECTION
Yes
Yes
Did work involve repetitive motion, uncomfortable positions, vibration, or heavy lifting?
Was communication needed across organizational boundaries or with other facilities?
TRAINING COMMUNICATIONS
Yes
Was a mistake made while using a procedure?
Was work performed in an adverse environment (such as hot, humid, dark, cramped, or hazardous)?
Did failure to agree about the who/what/when/where of performing the job play a role in this problem?
Was a task performed in a hurry or a shortcut used?
MANAGEMENT SYSTEM WORK DIRECTION
TRAINING WORK DIRECTION
Had management been warned of this problem or had it happened before?
Yes
Yes Yes HUMAN ENGINEERING
Were policies, admin. controls, or procedures not used, missing, or in need of improvement?
MANAGEMENT SYSTEM
MANAGEMENT SYSTEM WORK DIRECTION PROCEDURES
TRAINING Yes HUMAN ENGINEERING
Should an independent quality control check have caught the problem?
Yes QUALITY CONTROL
WORK DIRECTION Continue on back by analyzing the indicated Basic Cause Categories
TapRooT® Root Cause Tree® Basic Cause Categories PROCEDURES Pages 36-52
Not Used / Not Followed no procedure procedure not available or inconvenient for use procedure difficult to use procedure use not required but should be
QUALITY CONTROL
TRAINING Pages 53-61
No Training
Followed Incorrectly
Wrong typo sequence wrong facts wrong situation not covered wrong revision used
task not analyzed
details NI data/computations wrong or incomplete
no learning objective
no checkoff
No Inspection
Understanding NI
format confusing > 1 action / step excess references mult unit references limits NI
graphics NI
second checker needed
Pages 62-67
learning objective NI lesson plan NI
decided not to train
checkoff misused misused second check ambiguous instructions equip identification NI
inspection instructions NI
inspection not required
inspection techniques NI
no hold point
instruction NI practice/ repetition NI testing NI
missed required training
QC NI
hold point not performed
foreign material exclusion during work NI
continuing training NI
MANAGEMENT SYSTEM
COMMUNICATIONS Pages 68-76
No Comm. or Not Timely comm. system NI late communication
Pages 77-92
Misunderstood Verbal Comm.
Turnover NI
standard terminology not used
no standard turnover process turnover process not used turnover process NI
Standards, Policies, or Admin Controls (SPAC) NI no SPAC
standard terminology NI
not strict enough
repeat back not used
confusing or incomplete
long message
technical error
noisy environment
drawings/ prints NI
SPAC Not Used comm. of SPAC NI recently changed enforcement NI no way to implement
Oversight / Corrective Employee Action Relations corrective infrequent action NI audits & evaluations corrective (a & e) action a & e lack not yet depth implemented a & e not trending NI independent
accountability NI
HUMAN ENGINEERING
employee communications NI employee feedback NI
WORK DIRECTION
Pages 93-112
Pages 113-124
Human - Machine Interface
Work Environment
labels NI arrangement/ placement displays NI controls NI monitoring alertness NI plant/unit differences excessive lifting
Complex System
housekeeping NI hot/cold
knowledgebased decision required
wet/slick
monitoring too many items
lights NI
Non-Fault Tolerant System
Preparation
errors not detectable errors not recoverable
no preparation work package/ permit NI pre-job briefing NI
Selection of Worker
Supervision During Work
not qualified
no supervision
fatigued
crew teamwork NI
upset
noisy
walk-thru NI
substance abuse
obstruction cramped quarters equipment guard NI
scheduling NI
team selection NI
high radiation/contamination
tools/instruments NI NI = NEEDS IMPROVEMENT May also substitute LTA (Less Than Adequate) or PIO (Potential Improvement Opportunity)
lock out/ tag out NI fall protection NI Revised 3/20/00 Copyright © 2000 by System Improvements, Inc. All Rights Reserved – Duplication Prohibited