**SITE SEARCH:**

pleas e ente Go **SUBJECT INDEX** Air Water Waste Search TCEQ Data Agency Organization Map **Emission Event Reporting Database Regulated entity** 

**name** DUPONT SABINE RIVER WORKS **Physical location**  DUPONT SABINE RIVER

WORKS ON FM 1006 **Regulated entity RN number**  RN100542711 **City, County** ORANGE, ORANGE **Type(s) of air emissions event:**  EMISSIONS EVENT **Event began:**  09/01/2014 9:20AM **This is based on**

**the:** FINAL REPORT **Event ended:**  09/01/2014 9:24AM **Cause** While pressuring up #7 hyper discharge Rupture Disk was blown. **Action taken** #7 Hyper compressor was immediately shut down, valved out, and

set up for the rupture disk replacement. **Emissions estimation method**  From IP21 Data and Technical Calculations **Source 1: #7 Hyper Compressor Discharge Rupture Disk , EPN number PLUM -** **C**
**Contaminant Authorization**  **Limit Amount**  **Released** Ethylene (gaseous) No specific authorization for the facility. Permit 9176. 0.0 6239.0 lbs (est.)
Methanol No specific authorization for the facility. Permit 9176. 0.0 101.0 lbs (est.) **Source 2: #7 Hyper Compressor Discharge Rupture Disk , FIN number PLUMC Source 3: CDG , FIN number**  **No other sources**

### Emission Event Reporting Database

**Regulated entity**

**name** DOW TEXAS OPERATIONS FREEPORT **Physical location**  **Regulated entity RN**

**number** RN100225945 **City, County** FREEPORT, BRAZORIA **Type(s) of air emissions event:**  EMISSIONS EVENT **Event began:**  01/08/2015

8:58AM **This is based on the:** FINAL REPORT **Event ended:**  01/08/2015

9:01AM **Cause** An increase in pressure caused Pressure Safety Valve
- 151

to lift. **Action taken** System pressure was reduced. **Emissions estimation method**  Engineering calculations. **Source 1: Low pressure Ethylene feed line , FIN number OC5U5FU3 Source 2: OC5 Unit 5 , FIN number**  **Source 3: PSV -** **151 , EPN number N/A**
**Contaminant Authorization**  **Limit Amount**  **Released** Ethylene, gaseous NSR 19041 No specific emission

limit 0.0 90.0 lbs (est.)
**No other sources Emission Event Reporting Database** 

**Regulated entity name**  EASTMAN CHEMICAL TEXAS

OPERATIONS **Physical location**  GREGG AND HARRISON

COUNTIES **Regulated entity RN**  **number** RN100219815 **City, County** LONGVIEW, HARRISON **Type(s) of air emissions**  **event:** EMISSIONS EVENT **Event began:** 10/17/2014 10:06PM
**This is based on the:**  FINAL REPORT **Event ended:** 10/17/2014 11:44PM

**Cause** The pressure setting on the tank systems transfer lines was exceeded and

the pressure setting on the conservation vent on hazardous waste tank 36TK
- 59 was exceeded and emissions were vented from the tank to the atmosphere.
**Action taken** Pumping of liquid into the hazardous waste transfer line from another plant

area was stopped. The pressure on the hazardous waste line was reduced and the venting of air emissions from the conservation vent on tank 36TK
59 was stopped.
**Emissions estimation**  **method** Engineering ca lculations. Please note that upon further review, this release

event was determined to be not reportable. Eastman’s initial STEERS report dated 10/18/2014 was made in an excess of caution. Neither of the initially reported butyraldehyde chemicals exceeded the 100
- pound reportable quantity. Therefore, this was not reportable under 30 TAC 101.201. **Source 1: Hazardous Waste Tank , FIN number OX048T59 Source 2: Tank Vent , EPN number 048T59** 
**Contaminant Authorization**  **Limit Amount**  **Released** Butyraldehyde NSR Permit No. 21832 for total VOC. No

emissions authorized during upset conditions. 32.1 LBS/HR 61.14 lbs

(est.) Isobutyraldehyde NSR Permit No. 21832 for total VOC. No

emissions authorized during upset conditions. 32.1 LBS/HR 24.5 lbs

(est.) **Source 3: Texanol -**  **Nitriles/MIPK Area , FIN number No other sources** 

**Emission Event Reporting Database Regulated** 

**entity name** LYONDELL CHEMICAL BAYPORT

CHOATE PLANT **Physical location**  KM 579Q **Regulated entity RN**  **number** RN102523107 **City, County** PASADENA, HARRIS **Type(s) of air emissions**  **event:** EMISSIONS EVENT **Event began:** 10/19/2014 3:43PM
**This is based on the:**  FINAL REPORT **Event ended:** 10/19/2014 9:29PM

**Cause** A transmission line fault on the Centerpoint electric grid outside of the

facility caused a power failure. This resulted in multiple shutdowns of plant process equipment and activated a number of plant safety systems. Four RVs lifted to atmosphere, and other systems vented to the Plant 2 and Plant 3 emergency flares.
**Action taken** Plant procedures were followed to reset interlocks and reduce flows to the

flare system. Once power was restored, processes were restarted and stabilized to normal operation. **Emissions estimation**  **method** Process data and engineering calculations were utilized to quantify the

emissions. **Source 1: PO/TBA & Derivative Fugitives , EPN number E -** **BLOFUG Contaminant**  **Authorization Limit**  **Amount Released** Acetone NSR Permit 9395 0.0 2.13 lbs (est.) t- Butyl Alcohol NSR Permit 9395 0.0 30.5 lbs (est.) **Source 2: PO/TBA &Derivative Fugitives , FIN number BLOFUG**  **Source 3: PO/TBA &Derivative Fugitives , FIN number Source 4: Plant 2 Emergency Flare , EPN number E** **- B1501B**  **Contaminant Authorization**  **Limit Amount Released**  Acetone NSR Permit 9395 0.0 129.07 lbs (est.) Carbon Monoxide NSR Permit 9395 0.0 637.63 lbs (est.) Ethane NSR Permit 9395 0.0 8.66 lbs (est.) Isobutane NSR Permit 9395 0.0 1465.2 lbs (est.) Isobutylene NSR Permit 9395 0.0 3.33 lbs (est.)Isobutylene Oxide NSR Permit 9395 0.0 5.85 lbs (est.)

Methanol NSR Permit 9395 0.0 4.96 lbs (est.) Nitrogen oxide NSR Permit 9395 0.0 276.9 lbs (est.) Propane NSR Permit 9395 0.0 24.99 lbs (est.) Propylene (Propene) NSR Permit 9395 0.0 24.4 lbs (est.) Propylene oxide NSR Permit 9395 0.0 260.29 lbs (est.) n - butane NSR Permit 9395 0.0 75.45 lbs (est.) t- Butyl Alcohol NSR Permit 9395 0.0 204.77 lbs (est.) **Source 5: Plant 2 Emergency Flare , FIN number B1501B Source 6: Plant 2 Emergency Flare , FIN number**  **Source 7: Plant 3 Emergency Flare , EPN number E** **- B1501C**  **Contaminant Authorization**  **Limit Amount Released**  Acetone NSR Permit 9395 0.0 6.83 lbs (est.) Carbon Monoxide NSR Permit 9395 0.0 74.68 lbs (est.) Ethane NSR Permit 9395 0.0 2.21 lbs (est.) Isobutane NSR Permit 9395 0.0 105.76 lbs (est.) Nitrogen oxide NSR Permit 9395 0.0 28.72 lbs (est.) Propane NSR Permit 9395 0.0 7.71 lbs (est.) Propylene (Propene) NSR Permit 9395 0.0 50.69 lbs (est.) Propylene oxide NSR Permit 9395 0.0 5.72 lbs (est.) n - butane NSR Permit 9395 0.0 4.84 lbs (est.) t- Butyl Alcohol NSR Permit 9395 0.0 19.19 lbs (est.) **Source 8: Plant 3 Emergency Flare , FIN number B1501C Source 9: Plant 3 Emergency Flare , FIN number**  **No other sources**

### Emission Event Reporting Database

**Regulated entity name**  LYONDELL CHEMICAL

BAYPORT CHOATE PLANT **Physical location**  KM 579Q **Regulated entity RN**  **number** RN102523107 **City, County** PASADENA, HARRIS **Type(s) of air emissions**  **event:** EMISSIONS EVENT **Event began:** 01/21/2015 9:12AM **This is based on the:**  FINAL REPORT **Event ended:** 01/21/2015 10:01AM

**Cause** TBA from the process was lined up to tank F
- 1250B. The material in

the tank flashed, increasing the pressure in the tank. The RVs on tanks F
- 1250B and F
- 1250A lifted. The RV on F
- 1250B did not reseat on its ow n due to the guides becoming misaligned when it lifted. **Action taken** The RV on F
- 1250A reseated when pressure was reduced.

Operations personnel manually realigned the RV on F
- 1250B, and it reseated. **Emissions estimation**  **method** Process data and engineering calculations were utilized to quantify

the emissions. **Source 1: PO/TBA & Derivatives Fugitives , EPN number E -** **BLOFUG Contaminant**  **Authorization Limit**  **Amount Released** Acetone NSR 9395 0.0 16.0 lbs (est.) Isobutylene Oxide NSR 9395 0.0 2.0 lbs (est.) Methyl ethyl ketone (MEK) NSR 9395 0.0 1.0 lbs (est.) t- Butyl Alcohol NSR 9395 0.0 298.0 lbs (est.) **Source 2: PO/TBA & Derivatives Fugitives , FIN number BLOFUG Source 3: PO/TBA & Derivatives Fugitives , FIN number**  **No other sources Emission Event Reporting Database** 

### Regulated

**entity name** LYONDELL CHEMICAL

BAYPORT CHOATE PLANT **Physical location**  KM 579Q **Regulated entity RN**  **number** RN102523107 **City, County** PASADENA, HARRIS **Type(s) of air emissions**  **event:** EMISSIONS EVENT **Event began:** 07/30/2014 8:50AM **This is based on the:**  FINAL REPORT **Event ended:** 07/30/2014 10:10AM **Cause** Tank F
- 1208 hatch lift due to nitrogen blow through during

offloading of a tank truck. **Action taken** Hatch was reseated and release stopped. **Emissions estimation**  **method** Laboratory analysis was used to determine material composition.

The initial part of the release assumed the entire tank headspace volume of saturated vapor was released. A shallow pool calculation was used to estimate release quantities for the rema in ing time. **Source 1: PO/TBA and Derivatives Fugitives , EPN number BLOFUG Contaminant**  **Authorization Limit**  **Amount Released** Acetone NSR 9395 0.0 14.66 lbs (est.) Isobutylene NSR 9395 0.0 12.0 lbs (est.) Methanol NSR 9395 0.0 1.53 lbs (est.) Methyl ethyl ketone (MEK) NSR 9395 0.0 1.21 lbs (est.) t- Butyl Alcohol NSR 9395 0.0 372.15 lbs (est.) **Source 2: PO/TBA and Derivatives Fugitives , FIN number E -** **BLOFUG Source 3: PO/TBA and Derivatives Fugitives , FIN number**  **No other sources**

**Emission Event Reporting Database**

### Regulated

**entity name** UNION CARBIDE TEXAS

CITY **Physical location**  KEY MAP 737M **Regulated entity RN**  **number** RN100219351 **City, County** TEXAS CITY, GALVESTON **Type(s) of air emissions**  **event:** EMISSIONS EVENT **Event began:** 08/19/2011 9:00AM **This is based on the:**  FINAL REPORT **Event ended:** 09/04/2011 7:00AM

**Cause** A pressure regulator malfunctioned and allowed ethylene to leak

by undetected, resulting in unauthorized emissions and an RQ exceedance. **Action taken** The regulator was repaired promptly upon discovery. **Emissions estimation**  **method** Process Knowledge and Emission Monitoring data were used to

determine the quantities. **Source 1: Ethylene Vaporizer , FIN number Source 2: Ethylene Vaporizer , FIN number**  **Source 3: TCO S ite Flare , EPN number E09A032**  **Contaminant Authorization**  **Limit Amount Released**  Carbon Monoxide 436 2.26 LBS/HR 12.93 lbs (est.) Ethylene, gaseous 436 0.01 LBS/HR 1821.33 lbs (est.) Nitrogen oxide 436 0.29 LBS/HR 2.51 lbs (est.) **No other sources**

**Emission Event Reporting Database Regulated** 

**entity name** UNION CARBIDE TEXAS

CITY **Physical location** KEY MAP 737M **Regulated entity RN**  **number** RN100219351 **City, County** TEXAS CITY, GALVESTON **Type(s) of air emissions**  **event:** EMISSIONS EVENT **Event began:** 11/06/2010 2:30PM
**This is based on the:**  FINAL REPORT **Event ended:** 11/07/2010 7:45AM

**Cause** PSV 18829 began leaking and did not reseat itself. Preceeding the event,

the pressure below the valve did not exceed the 160 PSIG setpoint nor did it reach the 5% blow
- down pressure of 152 PSIG. The leak was not immediately discovered due to the low rate at which it was venting, relative to the total amount of gas being processed in the system. This allowed the system to stabilize at the given leak rate and not be immediately discernable to operations. Upon removal for inspection, there were no failures discovered in the PSV that would cause it to leak and then successfully reseat.

**Action taken** Once detected, operations was successfully able to reseat the PSV. As a

short
-term action to reduce the likelihood of recurrence, the system operating pressure was reduced 5 PSIG. This provides additional buffer between the operating and PSV set pressures. Since the inspection of the PSV did not substantiate a failure mechanism, other PSV's on the system will be removed and inspected during an upcoming outage in January 2011 to look for evidence that may help to explain the cause of this event and to minimi ze the chances of a similar incident occurring in the future. As a long
-term corrective action, a project is being initiated to identify PSV's that present elevated risk with respect to 1) the ability to quickly identify a leak and 2) potential release qua ntity. PSV's deemed to meet this criteria will be addressed on a case
- by
- case basis, with the intent to reduce the likelihood and and duration of future failures.

**Emissions estimation**  **method** VOC emissions associated with this event were estimated using process

data and a material balance. 1.How many reportable and recordable emissions events (including this incident) have occurred at the facility/facilities contributing emissions during this i ncident for the 12 month period prior to this incident? ¿This is the only incident to occur during the preceding 12
- month period. 2.What were the facility/facilities total actual operating hours during the past 12 months? ¿The actual operating hours of the LPO
- 12 #1 VPH Unit from 11/7/2009 ¿ 11/6/2010 were 8304. 3.Identify the cause or causes of the emissions event and include all contributing factors that led to the emissions event. Discuss how the emissions event could not have been avoided by good design , maintenance, and operation practices, if applicable. Discuss any sudden breakdown of equipment or process that was beyond the owner/operator¿s control, if applicable. ¿This event was caused by the premature (before the pressure reached the PSV pressure set point) lifting of PSV 18829. The PSV was found leaking and was immediately reseated by operations. Review ofprocess data indicates that the set pressure of the PSV was never exceeded. Further review failed to find any initiating event or external force acting on the PSV to precipitate its premature lifting. When PSV 18829 was later removed from service and examined, the valve started unseating 30 psi before the set point. The facility involved in this emissions event was designed, maintained, and operated in accordance with industry specifications and procedures. The emissions event could not have been avoided in this case. 4.How were the air pollution control equipment or processes (if any) maintained and operated in a manner consistent with good practi ce for minimizing emissions and reducing the number of emissions events? ¿This event had no impact on the operation of air pollution control equipment and processes located at the Texas City Site; all control devices are maintained and operated as required . 5.How soon was action taken to achieve compliance once the operator knew or should have known that applicable emission limitations were being exceeded? ¿Upon discovery of the leaking safety valve, operations immediately reseated it to stop the leak. 6.How were the amount and duration of the unauthorized emissions and any bypass of pollution control equipment minimized? ¿Upon discovery of the leaking safety valve, operations immediately reseated it to stop the leak. There was no bypass of pollution control equipment. 7.What was the operational status of all emission monitoring systems at the facility/facilities during this emissions event? If any emission monitoring systems were not kept in operation during the emissions event, explain why they weren¿t kept in operation. ¿There are no emission monitoring systems associated with the facility involved in the event. 8.How were the owner or operator¿s actions in response to the unauthorized emissions contemporaneously documented? ¿Plant operating notes document actions performed by operations in response to the event. 9.Have other similar incidents occurred at this/these facility/facilities in the past that might be indicative of inadequate design, operation, or maintenance? ¿No similar incidents have occurred in the last 12 months. 10.Identify any information you have (e.g., complaints from neighbors, fence line monitoring
**Source 1: LPO -** **12 #1 VPH , FIN number Source 2: PSV 18829 , EPN number N/A**  **Contaminant Authorization**  **Limit Amount Released**  Butyraldehyde NSR 9085 0.0 5856.0 lbs (est.) Isobutyraldehyde NSR 9085 0.0 532.0 lbs (est.) **Source 3: PSV 18829 , FIN number No other sources**