IRS/2025/6392/PON1
Notification details
| Status | Completed |
|---|---|
| First observed date | 03 July 2025 |
| First observed time | 01:15 |
| Incident type(s) | Chemical release |
| Organisations involved | SHELL U.K. LIMITED, STENA DRILLING LIMITED |
| Installation | Stena Don |
| Installation type | NPI |
| Field | Curlew |
| Latitude | 56° 43' 18.0'' N |
| Longitude | 1° 18' 30.0'' E |
| Quadrant / block no. | 29 / 7 |
Chemical 1
| Chemical product released | BARITE |
|---|---|
| Total quantity of chemical released | 1120.0 kg |
Chemical 2
| Chemical product released | CAUSTIC SODA |
|---|---|
| Total quantity of chemical released | 1.6 kg |
Chemical 3
| Chemical product released | FLOW-CARB SERIES |
|---|---|
| Total quantity of chemical released | 320.0 kg |
Chemical 4
| Chemical product released | MILPAC (ALL GRADES) |
|---|---|
| Total quantity of chemical released | 11.84 kg |
Chemical 5
| Chemical product released | MILSTARCH™ |
|---|---|
| Total quantity of chemical released | 4.16 kg |
Chemical 6
| Chemical product released | NaCl - SODIUM CHLORIDE |
|---|---|
| Total quantity of chemical released | 320.0 kg |
Chemical 7
| Chemical product released | SODA ASH |
|---|---|
| Total quantity of chemical released | 1.6 kg |
Chemical 8
| Chemical product released | SODIUM BROMIDE BRINE |
|---|---|
| Total quantity of chemical released | 128.0 kg |
Chemical 9
| Chemical product released | XAN-PLEX™ DSP |
|---|---|
| Total quantity of chemical released | 16.0 kg |
Formal investigation
| Formal investigation ever opened | Yes |
|---|
Close off details
| Release ever ongoing | No |
|---|
Source details
| Source | Below Drill Floor to Riser / Conductor - Diverter |
|---|