Page:NTSB - Railroad Accident Report - Derailment on May 25, 1989.djvu/4

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CONTENTS

EXECUTIVE SUMMARY
vi
 
INVESTIGATION
Events Preceding the Train Derailment
1
Loading of Hopper Cars
1
Preparing the Shipper’s Bill of Lading
3
Activities of Extra 7551 East
5
Activities of Helper Unit
8
Movement of Extra 7551 East from Oban to Hiland
8
The Train Derailment
8
Emergency Response to Train Derailment
9
Wreckage Clearance/Pipeline Surveillance Operations Following the Train Derailment
17
May 12, 1989
17
May 13, 1989
20
May 14, 1989
25
May 15 and 16, 1989
25
May 17, 18, and 19, 1989
30
Events Preceding the Pipeline Rupture
31
Pipeline Rupture
31
Pipeline Operations on May 25, 1989
31
Witnesses’ Observations
33
Emergency Response to Pipeline Rupture
33
Pipeline Surveillance Operations
35
Injuries
37
Damages
37
Train Derailment
37
Pipeline Rupture
39
Damage to the Pipeline
39
Track and Signal Information
42
Track
42
Signals
43
Train Information
43
Locomotive Units
43
Hopper Cars
44
Mechanical Information
45
Use of Dynamic Brakes
45
Maintenance Reports and Reporting of Defective Locomotive Units
46
Recovering Dynamic Brakes
47
FRA’s Position Regarding Functioning Dynamic Brakes
48
Southern Pacific’s Method of Operation
48
Air Brake Rules and Timetable Instructions
48
Communication Between Head end and Helper Engineers
53
Tonnage Information for Cars
53

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