Translate
Inspection Detail
Inspection: 310984356 - Bos Roustabouts
Inspection Information - Office: Bismarck Area Office
Site Address:
Bos Roustabouts
8 Miles Northwest Of Parshall
Parshall, ND 58770
Mailing Address:
P.O. Box 8, Ryder, ND 58779
Union Status: NonUnion
SIC:1389
NAICS: 213112/Support Activities for Oil and Gas Operations
Inspection Type: Unprog Rel
Scope: Complete
Advanced Notice: N
Ownership: Private
Safety/Health: Safety
Close Conference: 07/24/2007
Emphasis: L:Oilgas
Case Closed: 09/18/2007
| Type | Activity Nr | Safety | Health |
|---|---|---|---|
| Accident | 100332360 |
| Violations/Penalties | Serious | Willful | Repeat | Other | Unclass | Total |
|---|---|---|---|---|---|---|
| Initial Violations | 2 | 2 | ||||
| Current Violations | 2 | 2 | ||||
| Initial Penalty | $3,000 | $0 | $0 | $0 | $0 | $3,000 |
| Current Penalty | $1,500 | $0 | $0 | $0 | $0 | $1,500 |
| FTA Penalty | $0 | $0 | $0 | $0 | $0 | $0 |
| # | Citation ID | Citaton Type | Standard Cited | Issuance Date | Abatement Due Date | Current Penalty | Initial Penalty | FTA Penalty | Contest | Latest Event | Note |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | 01001 | Serious | 19100132 A | 08/07/2007 | 09/10/2007 | $750 | $1,500 | $0 | I - Informal Settlement | ||
| 2. | 01002A | Serious | 19100132 D01 | 08/07/2007 | 09/10/2007 | $750 | $1,500 | $0 | I - Informal Settlement | ||
| 3. | 01002B | Serious | 19100132 F01 | 08/07/2007 | 09/10/2007 | $0 | $0 | $0 | - |
Investigation Summary
At approximately 11:00 p.m. on May 26, 2007, a flash fire occurred during flowback on a well completion project. The fracturing of the well was completed at approximately 3:00 p.m. the afternoon of May 26. The personnel on site were in the process of flowing back the fracturing fluid, sand and water. The fracturing fluid coming out of the well was being piped into an open top, flat tank where it was filtered to remove the sand. From the "flat tank", the water was being pumped into enclosed storage tanks. The fracturing fluid being pumped out of the well was saturated with methane. The company supervisor was aware of the process. Prior to the fire, a diesel generated light tower was brought to the area of the "flat tank". The generator wouldn't start, so the company supervisor made the decision to jump start it by utilizing one of the sub-contractors pick-up diesel truck. The light tower was positioned approximately 35-40 feet from the "flat tank". The jumper cables were hooked up, and the light generator preheat switch had been activated. The preheat functions were similar to a "glow plug". At this time, the company supervisor saw blue flames on the ground between the light tower and the flat tank. A flash fire then occurred as vapors rising from the flat tank ignited. Seven employees were injured. Two were treated for burns and released, while the other five were hospitalized. Three of the burned employees were taken to Ramsey Burn Center in St. Paul, MN.
Keywords: FLAMMABLE VAPORS, BURN, FIRE, NATURAL GAS, GAS, SMOKE
| # | Inspection | Age | Sex | Degree of Injury | Nature of Injury | Occupation |
|---|---|---|---|---|---|---|
| 1 | 310984356 | Non Hospitalized injury | Burn/Scald(Heat) | Drillers, oil well | ||
| 2 | 310984356 | Hospitalized injury | Burn/Scald(Heat) | Drillers, oil well | ||
| 3 | 310984356 | Hospitalized injury | Burn/Scald(Heat) | Drillers, oil well | ||
| 4 | 310984356 | Hospitalized injury | Burn/Scald(Heat) | Drillers, oil well |