Project Summary: Pipeline Investigation - 109 Docket Items - PLD18FR002

Description: Leak/explosion/fire

Mode: Pipeline

NTSB Number: PLD18FR002

Date of Accident: 02/23/2018

City: Dallas

State/Region: TX

Country: United States

Project Type: Investigation

Docket Information

Creation Date: 05/07/2018

Last Modified: 02/09/2021 9:04 AM

Public Release Date & Time: 08/03/2020 2:00 PM


Docket Table of Contents

Docket Items: 109
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Title
Pgs
Photo
Type
File
1 PAR-21/01 - PIPELINE ACCIDENT REPORT, ATMOS ENERGY CORPORATION NATURAL GAS-FUELED EXPLOSION, DALLAS, TEXAS, FEBRUARY 23, 2018 101 0 Text/Image View
2 1 - IIC - PARTY SUBMISSION - RAILROAD COMMISSION OF TEXAS 2 0 Text/Image View
3 1 - IIC - PARTY SUBMISSION - DALLAS FIRE-RESCUE 2 0 Text/Image View
4 1 - IIC - PARTY SUBMISSION - ATMOS ENERGY CORPORATION AND NTSB MEMO 239 0 Text/Image View
5 1 - IIC - ACCIDENT SUMMARY 3 0 Text/Image View
6 1 - IIC - TECHNICAL REVIEW - COMMENT DISPOSITION AND MEETING NOTICE 4 0 Text/Image View
7 2 - OPS - OPERATIONS AND INTEGRITY MANAGEMENT - FACTUAL REPORT 70 0 Text/Image View
8 2 - OPS - ORIGINAL MAIN INSTALLATION FOR FONTANA-LARGA-MARSH-ALMAZAN 1947 17 0 Text/Image View
9 2 - OPS - SANITARY SEWER REFERENCES FROM THE CITY OF DALLAS 21 0 Text/Image View
10 2 - OPS - NTSB WEATHER STUDY WX-PLD18FR002 16 0 Text/Image View
11 2 - OPS - ATMOS CORPORATE OVERVIEW 3 0 Text/Image View
12 2 - OPS - MULTIYEAR CATHODIC PROTECTION READINGS 12 0 Text/Image View
13 2 - OPS - ATMOS GAS SAMPLE ANALYSIS 9 0 Text/Image View
14 2 - OPS - ATMOS PROCEDURE EXCERPTS 31 0 Text/Image View
15 2 - OPS - EMAILS BETWEEN NTSB IIC AND ATMOS ENERGY 22 0 Text/Image View
16 2 - OPS - SENSIT GOLD COMBUSTIBLE GAS INDICATOR (CGI) INSTRUCTION MANUAL 52 0 Text/Image View
17 2 - OPS - LETTER FROM TX-RRC TO ATMOS ENERGY, DATED DECEMBER 13, 2012 AND JANUARY 10, 2013 RESPONSE 8 0 Text/Image View
18 2 - OPS - ATMOS ENERGY DISTRIBUTION INTEGRITY MANAGEMENT METRICS COMBINED 7 0 Text/Image View
19 2 - OPS - NATURAL GAS ODORANT TEST LOCATIONS MAP AND ASSOCIATED READINGS 4 0 Text/Image View
20 2 - OPS - LAST TWO HISTORICAL LEAK SURVEYS AND HISTORICAL SURVEY MAP 2374 23 0 Text/Image View
21 2 - OPS - LEAK HISTORY - SERVICE ORDERS, LEAK REPORTS, SUMMARIES 25 0 Text/Image View
22 2 - OPS - 1997 MAIN SEGMENT LEAK REPORT 1 0 Text/Image View
23 2 - OPS - LEAK INVESTIGATION AND REPAIR DOCUMENTATION - PRIOR TO ACCIDENT 49 0 Text/Image View
24 2 - OPS - PICARRO TECHNOLOGY BRIEF 4 0 Text/Image View
25 2 - OPS - ATMOS ENERGY TIMELINE AS OF APRIL 4, 2018 6 0 Text/Image View
26 2 - OPS - ATMOS ENERGY LEAK REPORT FORM PS-95 DATA WITHHELD PURSUANT TO 49 CFR 831.1(C) WITH TRANSMITTAL LETTER AND FILING REQUIREMENTS 22 0 Text/Image View
27 2 - OPS - ATMOS ENERGY STATEMENTS REGARDING EVACUATIONS AND REPLACEMENTS 26 0 Text/Image View
28 2 - OPS - POST-ACCIDENT PRESSURE TESTS BY ATMOS ENERGY PRIOR TO NTSB INVESTIGATION 5 0 Text/Image View
29 2 - OPS - EXCAVATION SITE MAPS AND MATERIAL INVENTORY 7 0 Text/Image View
30 2 - OPS - PRESSURE TEST SECTIONS 1-5 AND 3534 ESPANOLA DRIVE HOUSE LINE 17 0 Text/Image View
31 2 - OPS - POST-ACCIDENT GAS MEASUREMENTS BY ATMOS ENERGY PRIOR TO NTSB INVESTIGATION 3 0 Text/Image View
32 2 - OPS - POST-ACCIDENT ODORIZATION TEST (TX-RRC ODORIZATION FORM PS-28) 1 0 Text/Image View
33 2 - OPS - REGULATOR FUNCTIONALITY TESTING BY ROTHFUSS ENGINEERING COMPANY 30 0 Text/Image View
34 2 - OPS - GOVERNMENT GEOTECHNICAL REPORT FOR THE NTSB (CESWF-EC-G) BY THE U.S. ARMY CORPS OF ENGINEERS 110 0 Text/Image View
35 2 - OPS - PRELIMINARY ASSESSMENT REPORT - BRYANT CONSULTANTS, INCORPORATED (BCI) 2 0 Text/Image View
36 2 - OPS - POST-INCIDENT TESTING AT 3527 AND 3515 DURANGO DRIVE - OBSERVATIONS BY ATMOS ENERGY 20 0 Text/Image View
37 2 - OPS - TRANSCRIPT OF VIDEO FROM POST-ACCIDENT PRESSURE TEST AT 3515 DURANGO DRIVE ON MARCH 15, 2018 10 0 Text/Image View
38 2 - OPS - POST-INCIDENT TESTING AT 3515 DURANGO DRIVE BY MESQUITE PLUMBING 4 0 Text/Image View
39 2 - OPS - ATMOS SAFETY INITIATIVES 6 0 Text/Image View
40 3 - HP - HUMAN PERFORMANCE FACTUAL REPORT 6 0 Text/Image View
41 4 - ER - EMERGENCY RESPONSE FACTUAL REPORT 24 0 Text/Image View
42 4 - ER - DALLAS FIRE-RESCUE DEPARTMENT, FIRE INVESTIGATION REPORT, FEBRUARY 23, 2018, 3534 ESPANOLA DRIVE, DALLAS, TEXAS 23 0 Text/Image View
43 4 - ER - DALLAS FIRE-RESCUE DEPARTMENT, FIRE INVESTIGATION REPORT, FEBRUARY 21, 2018, 3527 DURANGO DRIVE, DALLAS, TEXAS 15 0 Text/Image View
44 4 - ER - SIMPLIFIED FLOOR PLAN OF 3527 DURANGO DRIVE BASED ON DFR SKETCH 1 0 Text/Image View
45 4 - ER - INTERROGATORY RESPONSE FROM FEBRUARY 22, 2018, INCIDENT COMMANDER 4 0 Text/Image View
46 4 - ER - DALLAS FIRE-RESCUE DEPARTMENT, FIRE INVESTIGATION REPORT, FEBRUARY 22, 2018, 3515 DURANGO DRIVE, DALLAS, TEXAS 12 0 Text/Image View
47 4 - ER - SIMPLIFIED FLOOR PLAN OF 3515 DURANGO DRIVE BASED ON DFR SKETCH 1 0 Text/Image View
48 4 - ER - TX RRC STATUTORY AUTHORITY LETTER (FEBRUARY 27, 2018) 58 0 Text/Image View
49 4 - ER - ATMOS ENERGY EMAIL TO TX-RRC ON FEBRUARY 22, 2018- SUBJ COURTESY NOTIFICATION-ATMOS ENERGY 1 0 Text/Image View
50 4 - ER - TX-RRC EMAIL TO ATMOS ENERGY ON FEBRUARY 23, 2018-SUBJ RE COURTESY NOTIFICATION-ATMOS ENERGY 1 0 Text/Image View
51 4 - ER - EXCERPT OF DFR NG LEAK PROCEDURE (SOP 130) 6 0 Text/Image View
52 4 - ER - DFR HAZMAT PROCEDURE (SOP 100) 25 0 Text/Image View
53 4 - ER - EXCERPT OF DFR STRUCTURE FIRE (MOP 601) 3 0 Text/Image View
54 4 - ER - SIGN-IN SHEET, DFR HAZMAT COORDINATOR TRAINING WITH ATMOS IN JANUARY 2018 3 0 Text/Image View
55 4 - ER - DFR SOP, FIRE INVESTIGATION AND EXPLOSIVE ORDINANCE DISPOSAL IN FEB. 2018 35 0 Text/Image View
56 4 - ER - DFR HAZMAT ASSIGNMENT 5 0 Text/Image View
57 5 - MATL - NTSB MATERIALS LABORATORY FACTUAL REPORT 18-067 24 0 Text/Image View
58 5 - MATL - NTSB MATERIALS LABORATORY FACTUAL REPORT 18-096 9 0 Text/Image View
59 5 - MATL - NTSB MATERIALS LABORATORY FACTUAL REPORT 19-028 29 0 Text/Image View
60 6 - FIRE - MATERIALS LABORATORY FIRE FACTUAL REPORT 20-031 51 50 Text/Image View
61 6 - FIRE - GOGGLE EARTH IMAGES OF ADDITION TO 3527 DURANGO DRIVE 3 0 Text/Image View
62 6 - FIRE - GENERAL ELECTRIC GAS RANGE MANUAL 56 0 Text/Image View
63 6 - FIRE - GENERAL ELECTRIC GAS RANGE SPECIFICATION SHEET 2 0 Text/Image View
64 6 - FIRE - CONSUMER SAFETY PRODUCT COMMISSION DATA FOR GAS STOVE RECALLS 1 0 Text/Image View
65 6 - FIRE - SURECOMFORT HOT WATER HEATER SPECIFICATION SHEET 1 0 Text/Image View
66 6 - FIRE - RHEEM GENERIC HOT WATER HEATER EXPLODED VIEW DRAWING 2 0 Text/Image View
67 6 - FIRE - CONSUMER SAFETY PRODUCT COMMISSION DATA ON GAS HOT WATER HEATER RECALLS 2 0 Text/Image View
68 6 - FIRE - KENMORE GAS RANGE INSTALLATION INSTRUCTIONS 32 0 Text/Image View
69 6 - FIRE - KENMORE GAS RANGE MANUAL 28 0 Text/Image View
70 6 - FIRE - CONSUMER SAFETY PRODUCT COMMISSION DATA ON GAS FURNACE RECALLS 3 0 Text/Image View
71 7 - INTERVIEW - ATMOS CREW LEADER 'A' 03.08.2018 WITH ERRATA 21 0 Text/Image View
72 7 - INTERVIEW - ATMOS CREW LEADER 'B' 03.08.2018 WITH ERRATA 37 0 Text/Image View
73 7 - INTERVIEW - ATMOS DIRECTOR OF ASSET MANAGEMENT 04.25.2018 WITH ERRATA 62 0 Text/Image View
74 7 - INTERVIEW - ATMOS DIRECTOR OF ENGINEERING AND COMPLIANCE 04.24.2018 WITH ERRATA 24 0 Text/Image View
75 7 - INTERVIEW - ATMOS DIRECTOR OF OPERATIONS 03.03.2018 & 03.07.2018 WITH ERRATA 109 0 Text/Image View
76 7 - INTERVIEW - ATMOS DIRECTOR OF REGULATORY AND COMPLIANCE 04.24.2018 WITH ERRATA 75 0 Text/Image View
77 7 - INTERVIEW - ATMOS DISTRIBUTION OPERATOR 02.28.2018 & 06.06.2018 WITH ERRATA 94 0 Text/Image View
78 7 - INTERVIEW - ATMOS MANAGER OF ENGINEERING SERVICES 04.25.2018 WITH ERRATA 83 0 Text/Image View
79 7 - INTERVIEW - ATMOS OPERATIONS MANAGER 03.03.2018 & 03.07.2018 WITH ERRATA 133 0 Text/Image View
80 7 - INTERVIEW - ATMOS OPERATIONS SUPERVISOR 'A' 02.28.2018 & 06.06.2018 WITH ERRATA 66 0 Text/Image View
81 7 - INTERVIEW - ATMOS OPERATIONS SUPERVISOR 'B' 03.05.2018 & 03.08.2018 WITH ERRATA 99 0 Text/Image View
82 7 - INTERVIEW - ATMOS OPERATIONS SUPERVISOR 'C' 03.04.2018 WITH ERRATA 114 0 Text/Image View
83 7 - INTERVIEW - ATMOS SENIOR SERVICE TECHNICIAN 02.28.2018 WITH ERRATA 59 0 Text/Image View
84 7 - INTERVIEW - ATMOS SERVICE TECHNICIAN 2 02.28.2018 & 06.06.2018 WITH ERRATA 109 0 Text/Image View
85 7 - INTERVIEW - ATMOS SUPERVISOR OF TRAINING DELIVERY 04.24.2018 WITH ERRATA 60 0 Text/Image View
86 7 - INTERVIEW - ATMOS SURVEY SPECIALIST 'A' 03.04.2018 & 06.06.2018 WITH ERRATA 78 0 Text/Image View
87 7 - INTERVIEW - ATMOS SURVEY SPECIALIST 'B' 03.04.2018 & 06.06.2018 WITH ERRATA 134 0 Text/Image View
88 7 - INTERVIEW - ATMOS VICE PRESIDENT OF TECHNICAL SERVICES 04.25.2018 WITH ERRATA 63 0 Text/Image View
89 7 - INTERVIEW - DALLAS FIRE-RESCUE BATTALION CHIEF 'C' 03.05.18 54 0 Text/Image View
90 7 - INTERVIEW - DALLAS FIRE-RESCUE ARSON INVESTIGATOR 'A' 02.27.18 13 0 Text/Image View
91 7 - INTERVIEW - DALLAS FIRE-RESCUE ARSON INVESTIGATOR 'B' 02.26.18 23 0 Text/Image View
92 7 - INTERVIEW - DALLAS FIRE-RESCUE ARSON INVESTIGATOR 'C' 02.26.18 20 0 Text/Image View
93 7 - INTERVIEW - DALLAS FIRE-RESCUE ARSON INVESTIGATOR 'D' 02.26.18 21 0 Text/Image View
94 7 - INTERVIEW - DALLAS FIRE-RESCUE ARSON INVESTIGATOR 'E' 02.26.18 28 0 Text/Image View
95 7 - INTERVIEW - DALLAS FIRE-RESCUE BATTALION CHIEF 'A' 02.26.18 WITH CLARIFICATION 49 0 Text/Image View
96 7 - INTERVIEW - DALLAS FIRE-RESCUE BATTALION CHIEF 'B' 02.27.18 17 0 Text/Image View
97 7 - INTERVIEW - DALLAS FIRE-RESCUE BATTALION CHIEF 'D' 02.26.18 65 0 Text/Image View
98 7 - INTERVIEW - DALLAS FIRE-RESCUE CHIEF OF STAFF 02.27.18 WITH ERRATA 178 0 Text/Image View
99 7 - INTERVIEW - DALLAS FIRE-RESCUE DEPUTY CHIEF OF SAFETY 02.27.18 46 0 Text/Image View
100 7 - INTERVIEW - DALLAS FIRE-RESCUE HAZMAT COORDINATOR 02.27.18 42 0 Text/Image View
101 ATMOS ENERGY MID-TEX GRADE 1 AND 2 LEAKS IN DALLAS, REPORTED TO RRC - 23FEB2018 TO 31MAR2018 75 0 Text/Image View
102 ELECTRONIC DEVICES - SECURITY CAMERAS - SPECIALIST'S FACTUAL REPORT 5 0 Text/Image View
103 CORRESPONDENCE BETWEEN CITY MANAGER AND CITY COUNCIL DATED APRIL 13, 2018 51 0 Text/Image View
104 ATMOS ENERGY -- DISTRIBUTION FACILITIES REPLACEMENT PLAN -- APRIL 2016 REVISION & APPROVAL BY TX-RRC 8 0 Text/Image View
105 FOUNDATION REPAIR PERMIT - 3534 ESPANOLA DRIVE 15 0 Text/Image View
106 REMODEL PERMIT - 3534 ESPANOLA DRIVE 42 0 Text/Image View
107 SERVICE LINE INSTALLATION RECORDS 70 0 Text/Image View
108 SERVICE ORDER HISTORY - 3527, 3515 DURANGO AND 3534 ESPANOLA DRIVE 41 0 Text/Image View
109 DOT IG REPORT, JUNE 2004 - ACTIONS TAKEN AND NEEDED FOR IMPROVING PIPELINE SAFETY 69 0 Text/Image View