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Inspection Detail
Inspection: 303685093 - Ultramar Diamond Shamrock Corporation
Inspection Information - Office: Corpus Christi Area Office
Site Address:
Ultramar Diamond Shamrock Corporation
301 Leroy St, Hwy 72 West
Three Rivers, TX 78071
Mailing Address:
P.O. Box 490, Three Rivers, TX 78071
Union Status: NonUnion
SIC:2911
NAICS: 0
Inspection Type: Accident
Scope: Partial
Advanced Notice: N
Ownership: Private
Safety/Health: Safety
Close Conference: 07/10/2001
Emphasis: N:Petro
Case Closed: 02/04/2003
| Type | Activity Nr | Safety | Health |
|---|---|---|---|
| Accident | 100211143 | ||
| Referral | 200211241 | Yes |
| Violations/Penalties | Serious | Willful | Repeat | Other | Unclass | Total |
|---|---|---|---|---|---|---|
| Initial Violations | 6 | 1 | 7 | |||
| Current Violations | 2 | 1 | 3 | |||
| Initial Penalty | $20,250 | $49,500 | $0 | $0 | $0 | $69,750 |
| Current Penalty | $4,050 | $0 | $0 | $600 | $0 | $4,650 |
| 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 | 19100119 J06 II | 01/07/2002 | 02/11/2002 | $0 | $4,500 | $0 | 01/28/2002 | F - Formal Settlement | Citation has been deleted. |
| 2. | 01002 | Serious | 19100119 J06 III | 01/07/2002 | 02/11/2002 | $0 | $4,500 | $0 | 01/28/2002 | F - Formal Settlement | Citation has been deleted. |
| 3. | 01003 | Serious | 19100119 L01 | 01/07/2002 | 02/11/2002 | $2,700 | $4,500 | $0 | 01/28/2002 | F - Formal Settlement | |
| 4. | 01004 | Other | 19100119 M04 IV | 01/07/2002 | 02/11/2002 | $600 | $2,250 | $0 | 01/28/2002 | F - Formal Settlement | |
| 5. | 01005 | Serious | 19100120 Q10 | 01/07/2002 | 02/11/2002 | $0 | $2,250 | $0 | 01/28/2002 | F - Formal Settlement | Citation has been deleted. |
| 6. | 01006 | Serious | 19100132 A | 01/07/2002 | 02/11/2002 | $1,350 | $2,250 | $0 | 01/28/2002 | F - Formal Settlement | |
| 7. | 02001 | Willful | 19100119 J04 II | 01/07/2002 | 02/11/2002 | $0 | $49,500 | $0 | 01/28/2002 | F - Formal Settlement | Citation has been deleted. |
Investigation Summary
The HF Alkylation Unit of the refinery was under normal operations. Two contractor workers were servicing a temporary clamp box on a special three-way valve. One connection to the valve blew off while more sealant was being added to the box. A vapor mixture of isobutane, propane, and residual hydrofluoric acid was released from a 3-inch line at 300-400 psig. The release quickly ignited, causing a fire. The fire caused heavy damage to an overhead pipe rack and run of wiring. A high-pressure hydrogen line and additional lines failed, causing some explosive popping sounds. Three employees were hospitalized with injuries from the fire.
Keywords: FLAMMABLE VAPORS, VALVE, PROPANE, BURN, HEAT, FIRE, HIGH PRESSURE
| # | Inspection | Age | Sex | Degree of Injury | Nature of Injury | Occupation |
|---|---|---|---|---|---|---|
| 1 | 303685093 | Hospitalized injury | Burn/Scald(Heat) | Miscellaneous plant and system operators | ||
| 2 | 303685093 | Hospitalized injury | Burn(Chemical) | Miscellaneous plant and system operators |