PON1/517

Notification details

Status	Completed
First observed date	20 July 2011
First observed time	23:45
Incident type(s)	Chemical release
Organisations involved	Shell U.K. Exploration & Production Limited (NNS)
Installation	Shearwater A Wellhead Platform
Installation type	Fixed
Field	SHEARWATER
Latitude	57° 1' 55.9'' N
Longitude	1° 57' 19.15'' E
Quadrant / block no.	22 / 30

Chemical 1

Chemical product released	Versatherm
Total quantity of chemical released	6360.0 kg

Formal investigation

Formal investigation ever opened	Yes

Close off details

Release ever ongoing	No

Source details

Source	Tiebolt ejected from equipment, resulting in release of Oil Based Mud from riser.