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Title |
Pgs |
Photo |
Type |
File |
| 1 |
Final Accident Report NTSB/PAR-19/01 |
64 |
0 |
Adobe PDF file |
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| 2 |
IIC Synopsis |
1 |
0 |
Adobe PDF file |
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| 3 |
Materials Laboratory Factual Report 16-097 |
46 |
21 |
Adobe PDF file |
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| 4 |
Materials Laboratory Factual Report 16-098 |
7 |
5 |
Adobe PDF file |
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| 5 |
Operations Factual Report |
42 |
19 |
Adobe PDF file |
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| 6 |
ATF Report |
12 |
0 |
Adobe PDF file |
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| 7 |
Operations - 10-13-16 Kay Management Response to NTSB Request |
5 |
0 |
Adobe PDF file |
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| 8 |
Operations - 10-21-16 Kay Management Response to NTSB 10-7-16 Request |
6 |
0 |
Adobe PDF file |
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| 9 |
Operations - Associates Plumbing Invoices & Log |
2 |
0 |
Adobe PDF file |
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| 10 |
Operations - 8701 Meter Room Inventory |
1 |
0 |
Adobe PDF file |
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| 11 |
Attachment A - Photo Coverage of Accident Scene Moments After the Accident by Maryland Public Service Commission |
7 |
13 |
Adobe PDF file |
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| 12 |
Attachment B - Photo coverage of the basement perimeter and accident area by Kay Management representative |
13 |
24 |
Adobe PDF file |
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| 13 |
Flower Branch Apartments Floor Plans for Buildings 8701 and 8703 |
4 |
0 |
Adobe PDF file |
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| 14 |
Operations - OPS - Painting Work Orders |
6 |
0 |
Adobe PDF file |
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| 15 |
Operations - 3-9-17 Kay Management Response to 3-7-17 Request |
3 |
0 |
Adobe PDF file |
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| 16 |
Operations - Kay Management Safety Meetings |
3 |
0 |
Adobe PDF file |
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| 17 |
Operations - Vector Security Report on Doors Access |
4 |
0 |
Adobe PDF file |
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| 18 |
Operations - Combustble Gas Detector Information by Kay Management |
8 |
0 |
Adobe PDF file |
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| 19 |
Operations - Kay Management (All Work Orders 08-01-15 thru 08-25-16) |
90 |
0 |
Adobe PDF file |
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| 20 |
Operations - ASTI Fire Alarm Testing |
4 |
0 |
Adobe PDF file |
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| 21 |
Operations - Montgomery County Fire Prevention-Code Compliance. VN (5-9-16) |
3 |
0 |
Adobe PDF file |
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| 22 |
Operations - Teco Purchase Order Furnace Replacement (1-29-2016) |
2 |
0 |
Adobe PDF file |
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| 23 |
Operations - Kay Management New Tenants Information |
8 |
0 |
Adobe PDF file |
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| 24 |
Operations - Liberty Lock records (FB) |
58 |
0 |
Adobe PDF file |
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| 25 |
Operations - OPS - Meter Room Activity in total for 8701 |
66 |
0 |
Adobe PDF file |
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| 26 |
Operations - WG email on regulator union rotation |
4 |
0 |
Adobe PDF file |
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| 27 |
Operations - Paul Armstrong Residential Methane |
18 |
0 |
Adobe PDF file |
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| 28 |
Operations - Attachment C - Adjusted list to reflect gas calls Copy of NTSB Event request for Arliss St |
11 |
0 |
Adobe PDF file |
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| 29 |
Operations - Combined 4 MCFRS Officers Statements |
4 |
0 |
Adobe PDF file |
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| 30 |
Operations - Mercury Regulator Removal and Replacements |
4 |
0 |
Adobe PDF file |
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| 31 |
Operations - Mercury Regulator repalcements FY12- FY16 |
1 |
0 |
Adobe PDF file |
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| 32 |
Operations - OPS - Wall thickness 4 inch and 2 inch for the piping at 8701 and 8703 |
1 |
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Adobe PDF file |
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| 33 |
Operations - OPS - Leak Repair History for one year in vicinity of incident |
2 |
0 |
Adobe PDF file |
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| 34 |
Operations - OPS - Five Year Outside Leak Survey History for Flower Branch and 8701 and 8703 (1) |
2 |
0 |
Adobe PDF file |
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| 35 |
Operations - Operation and Maintenance Manual - Meter Banks |
9 |
0 |
Adobe PDF file |
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| 36 |
Operations - OPS - Overview PAP Materials Narrative[1] |
5 |
0 |
Adobe PDF file |
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| 37 |
Operations - OPS - Outside Leak Repair on Service at 8703 Arliss St 9.5.2013 |
6 |
0 |
Adobe PDF file |
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| 38 |
Operations - OPS - O&M Regulator Operations |
20 |
0 |
Adobe PDF file |
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| 39 |
Operations - OPS - Five Year Outside Leak Survey History for Flower Branch and 8701 and 8703- 2 |
1 |
0 |
Adobe PDF file |
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| 40 |
Operations - OPS - Five Year Outside Leak Survey History for Flower Branch and 8701 and 8703 (2016)-7 |
12 |
0 |
Adobe PDF file |
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| 41 |
Operations - OPS - Five Year History of Odor Calls at Flower Branch Complex - 4 |
22 |
0 |
Adobe PDF file |
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| 42 |
Operations - OPS - Five Year History of Odor Calls at Flower Branch Complex - 3 |
42 |
0 |
Adobe PDF file |
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| 43 |
Operations - OPS - Five Year History of Odor Calls at Flower Branch Complex - 2 |
50 |
0 |
Adobe PDF file |
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| 44 |
Operations - OPS - Five Year 8-2011 through 8-2016 Odor Call History for 8701 Arliss |
1 |
0 |
Adobe PDF file |
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| 45 |
Operations - OPS - DR.001.Methane Detectors[1] |
2 |
0 |
Adobe PDF file |
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| 46 |
Operations - OPS - Coating Information - 2 |
8 |
0 |
Adobe PDF file |
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| 47 |
Operations - OPS - Odorant Monitoring - 1 |
2 |
0 |
Adobe PDF file |
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| 48 |
Operations - OPS - O&M Actions Installing Gas Meters[1] |
1 |
0 |
Adobe PDF file |
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| 49 |
Operations - OPS - Map of Five Year Outside Leak Survey History for Flower Branch and 8701 and 8703 - 5 |
1 |
0 |
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| 50 |
Operations - OPS - Five Year Aboveground Leak Repair History for Flower Branch and 8701 and 8703.REVISED Title Name - 2 |
1 |
0 |
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| 51 |
Operations - OPS - Cathodic Protection Info - 1 |
9 |
0 |
Adobe PDF file |
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| 52 |
Operations - OPS - Miss Utility Tickets - 811 tickets |
2 |
0 |
Adobe PDF file |
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| 53 |
Operations - OPS - Five Year Outside Leak Survey History for Flower Branch and 8701 and 8703 (2013) - 8 |
10 |
0 |
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| 54 |
Operations - OPS - Map of Five Year Outside Leak Survey History for Flower Branch and 8701 and 8703 - 6 of 10 |
1 |
0 |
Adobe PDF file |
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| 55 |
Operations - OPS - Five Year Outside Leak Survey History for Flower Branch and 8701 and 8703 - 3 |
2 |
0 |
Adobe PDF file |
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| 56 |
Interview of Resident A |
57 |
0 |
Adobe PDF file |
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| 57 |
Interview of Williams Meters Service Tech |
42 |
0 |
Adobe PDF file |
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| 58 |
Interview of Montgomery Fire and Rescue Lieutenant |
52 |
0 |
Adobe PDF file |
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| 59 |
Interview of Former Washington Gas Employee |
113 |
0 |
Adobe PDF file |
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| 60 |
Interview of Washington Gas Supervisor |
58 |
0 |
Adobe PDF file |
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| 61 |
Interview of MCFRS Firefighter 2 |
26 |
0 |
Adobe PDF file |
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| 62 |
Interview of Washington Gas Manager, Meter and Regulator Services |
68 |
0 |
Adobe PDF file |
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| 63 |
Interview of Washington Gas Aboveground Construction Supervisor |
68 |
0 |
Adobe PDF file |
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| 64 |
Interview of Williams Meter Employee |
54 |
0 |
Adobe PDF file |
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| 65 |
Interview of Property Manager of Flower Branch Apartments - Errata |
56 |
0 |
Adobe PDF file |
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| 66 |
Interview of Williams Meter Relight Tech - Errata |
52 |
0 |
Adobe PDF file |
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| 67 |
Interview of Washington Gas Manager, Meter and Regulator Services - Errata |
70 |
0 |
Adobe PDF file |
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| 68 |
Interview of Williams Meter Credit Collector - Errata |
28 |
0 |
Adobe PDF file |
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| 69 |
Interview of Washington Gas Leak Survey Supervisor - Errata |
3 |
0 |
Adobe PDF file |
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| 70 |
Interview of Kay Management Maintenance Technician - Errata |
29 |
0 |
Adobe PDF file |
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| 71 |
Interview of Kay Management Regional Supervisor - Errata |
53 |
0 |
Adobe PDF file |
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| 72 |
Interview of Lyle Kenneth Davis Jr. - Errata |
44 |
0 |
Adobe PDF file |
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| 73 |
Interview of President of Kay Management - Errata |
60 |
0 |
Adobe PDF file |
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| 74 |
Interview of Witness A |
40 |
0 |
Adobe PDF file |
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| 75 |
Interview of Kay Management Engineer |
36 |
0 |
Adobe PDF file |
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| 76 |
Interview of Washington Gas Operations Technician |
40 |
0 |
Adobe PDF file |
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| 77 |
Interview of Robert Kirschner |
26 |
0 |
Adobe PDF file |
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| 78 |
Interview of Leonel Lazaro |
27 |
0 |
Adobe PDF file |
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| 79 |
Interview of James Little Jr. |
17 |
0 |
Adobe PDF file |
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| 80 |
Interview of Contract Manager of Alarm System Testing and Inspection, Inc. |
27 |
0 |
Adobe PDF file |
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| 81 |
Interview of President, Associates Plumbing Inc. |
59 |
0 |
Adobe PDF file |
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| 82 |
Interview of Senior Engineer, Linc Energy Systems, Inc. (1) |
64 |
0 |
Adobe PDF file |
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| 83 |
Interview of Senior Engineer, Linc Energy Systems, Inc. (2) |
17 |
0 |
Adobe PDF file |
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| 84 |
Interview of James Clark Melillo |
57 |
0 |
Adobe PDF file |
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| 85 |
Interview of Andre C. Minor |
50 |
0 |
Adobe PDF file |
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| 86 |
Interview of Ronald Neil |
51 |
0 |
Adobe PDF file |
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| 87 |
Interview of Kay Management Maintenance Technician |
17 |
0 |
Adobe PDF file |
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| 88 |
Interview of Property Manager of Flower Branch Apartments |
54 |
0 |
Adobe PDF file |
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| 89 |
Interview of Kay Management Maintenance Technician |
25 |
0 |
Adobe PDF file |
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| 90 |
Interview of Plumber, Associates Plumbing Inc. |
35 |
0 |
Adobe PDF file |
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| 91 |
Interview of Washington Gas, Gas and Service Technician |
25 |
0 |
Adobe PDF file |
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| 92 |
Interview of Washington Gas Service Technician (Rockville) |
43 |
0 |
Adobe PDF file |
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| 93 |
Interview of Vice President, Associates Plumbing, Inc. |
16 |
0 |
Adobe PDF file |
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| 94 |
Materials Laboratory Report 16-100 Hot Water Heater |
6 |
5 |
Adobe PDF file |
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|
| 95 |
Hot Water Heater Unit Operating and Service Manual |
56 |
0 |
Adobe PDF file |
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|
| 96 |
Survival Factors |
21 |
0 |
Adobe PDF file |
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| 97 |
Survival Factors Factual - Exhibit 1 Event Chronology Timeline |
5 |
0 |
Adobe PDF file |
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| 98 |
Survival Factors Factual - Exhibit 2 OEMHS Memorandum |
4 |
0 |
Adobe PDF file |
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| 99 |
Transcript of Interview - A. Walls/Washington Gas (with witness review response) |
62 |
0 |
Adobe PDF file |
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| 100 |
Reg. Oversight-MPSC Warning Letter 2013-2016 |
40 |
0 |
Adobe PDF file |
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| 101 |
Reg. Oversight-Montgomery County Concil Resolution No. 18-218 (7-21-2015) |
26 |
0 |
Adobe PDF file |
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| 102 |
Reg. Oversight-Montgomery County Council Resolution No. 18-555 (7-19-2016) |
8 |
0 |
Adobe PDF file |
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| 103 |
Reg. Oversight-ASTI Fire Alarm Testing Record (4-27-2016) |
4 |
0 |
Adobe PDF file |
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| 104 |
Reg. Oversight-Montgomery County Fire and Life Inspection (5-19-2016) |
3 |
0 |
Adobe PDF file |
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| 105 |
Reg. Oversight-Post Accident Washington Gas Odorant Test (8-11-2016) |
2 |
0 |
Adobe PDF file |
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| 106 |
Reg. Oversight-MCFRS SOP for Natural Gas Incident |
8 |
0 |
Adobe PDF file |
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| 107 |
Reg. Oversight-MCFRS Statements on July 25, 2016 incident |
3 |
0 |
Adobe PDF file |
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| 108 |
Reg. Oversight-Operations Technology Development Summary Report, Project No. 1.14g and No. 1.15e |
2 |
0 |
Adobe PDF file |
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| 109 |
Regulatory Oversight Group Factual Report |
15 |
3 |
Adobe PDF file |
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| 110 |
Materials Laboratory Factual Report 18-008 |
4 |
5 |
Adobe PDF file |
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| 111 |
Gas Composition on August 10, 2016 to Flower Branch Complex (Silver Spring, MD) |
3 |
0 |
Adobe PDF file |
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| 112 |
Materials Laboratory Study Report 18-039S |
14 |
0 |
Adobe PDF file |
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| 113 |
Washington Gas Party Submission |
99 |
0 |
Adobe PDF file |
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| 114 |
MPSC Party Submission |
8 |
0 |
Adobe PDF file |
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| 115 |
MCFRS Party Submission |
7 |
0 |
Adobe PDF file |
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| 116 |
Washington Gas Presentation to NTSB Board Members April 2019 |
31 |
0 |
Adobe PDF file |
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