Safety Alert

Blow Out Preventer (BOP) Drops to Seabed

IADCInternational Association of Drilling ContractorsIADC Alert 20-04

Blow Out Preventer (BOP) Drops to Seabed

Read at IADCOpens the publisher’s page on iadc.org

Summary

This alert describes a blowout preventer falling to the seabed during deployment on marine riser. A subsea engineer inadvertently triggered the emergency disconnect sequence after mistaking its button for the wellhead connector valve override, separating the preventer from the lower marine riser package.

Topics

About This Record
Publisher
International Association of Drilling Contractors
Type
Safety Alert
Reference
IADC Alert 20-04
Date
27 May 2020
Topic
Dropped Objects, Human Factors
Activity
Lifting Operations
Equipment
Blowout Preventer, Operator Displays and Control Interfaces
Sector
Upstream Oil and Gas
Setting
Subsea
Link
Checked , working
Record
iadc-alert-20-04 · added 3 September 2026

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