Tank Car NAR Data Breakdowns 2017 Preliminary Overview

Preliminary data breakdowns for Tank Car NAR incidents in 2017 sourced from PHMSA and Canadian railroads. Details on incident sources, gaps in Cause Codes, reductions in NARs since previous years, top commodities involved, and multiple NAR occurrences from the same origin points. Graphs depict trends for Alcohols NOS, Anhydrous Ammonia, and Crude Oil.

• Tank Car NAR Data
• 2017 Incidents
• PHMSA
• Canadian Railroads
• Safety Trends

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1. Tank Car NAR Data Breakdowns 2017 Preliminary Source of data: PHMSA on-line NAR data and data provided by Canadian Class 1 railroads Todd Treichel ttreichel@aar.org 7/11/18 PRELIMINARY 1

2. Sources for the NAR Data The main source for incidents in the US is PHMSA s 5800.1-based data Canadian Class 1s also voluntarily provided data on incidents in Canada Railroads are voluntarily adding BOE Cause Codes to their 5800.1 reports More precision than PHMSA Cause Codes However, this process was introduced mid-2017 and needed considerable follow-up to complete the dataset 7/11/18 PRELIMINARY 2

3. Further Notes on NAR Data Some gaps Cause Codes for most US short lines Canadian short line incidents Did not attempt to include Mexican incidents 2017 data do include US short line incidents, while previous years lacked many of those but they are excluded from the trend graphs for comparability with previous years While the 2017 dataset is finalized, the graphs shown here are preliminary because there has not been a full review of the various counts 7/11/18 PRELIMINARY 3

4. Tank Cars with NARs by Year US & Canada * 63% reduction since 1996 32% reduction since 2007 7/11/18 PRELIMINARY 4

5. Top Commodities for NARs Top 15 in Tank Car NARs in 2017 US & Canada Also of interest: Pet. Crude 3 7/11/18 PRELIMINARY 5

6. Multiple Tank Car NARs During 2017 from the Same Origin Point 323 origins had 1 NAR, 40 had 2 NARs, etc. 7 origin locations had 5 or more NARs in 2017 7/11/18 PRELIMINARY 6

7. Alcohols NOS Trend 7/11/18 PRELIMINARY 7

8. Anhydrous Ammonia Trend 7/11/18 PRELIMINARY 8

9. Crude Oil Trend 7/11/18 PRELIMINARY 9

10. LPG Trend 7/11/18 PRELIMINARY 10

11. Tank Car NARs per 1,000 Originations Selected Commodities 7/11/18 PRELIMINARY 11

12. Tank Car NARs per 1,000 Originations Selected Commodities HCl Excluded 7/11/18 PRELIMINARY 12

13. Components Involved in NARs Non-pressure Cars 2017 7/11/18 PRELIMINARY 13

14. Top Specific Causes for Non-pressure Cars 2017 7/11/18 PRELIMINARY 14

15. Components Involved in NARs Pressure Cars 2017 7/11/18 PRELIMINARY 15

16. Top Specific Causes for Pressure Cars 2017 7/11/18 PRELIMINARY 16