Safety Alert

Identifying Control Panel Valves

IADCInternational Association of Drilling ContractorsIADC Alert 99-12

Identifying Control Panel Valves

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

Summary

A rig supervisor helping a short-handed crew after a connection mistook the lead-tong breakout clutch for the mud-pump throttle. The tongs moved from their secured position and pinned an employee against the drawworks, causing broken ribs, a punctured lung and other injuries.

Topics

About This Record
Publisher
International Association of Drilling Contractors
Type
Safety Alert
Reference
IADC Alert 99-12
Date
6 April 1999
Topic
Crushing and Pinch Points, Human Factors
Activity
Drilling
Equipment
Operator Displays and Control Interfaces
Sector
Upstream Oil and Gas
Link
Checked , working
Record
iadc-alert-99-12 · added 3 September 2026

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