SPE Health, Safety, and Environment 3

Question 1

What is the minimum required oxygen concentration for normal work in a confined space according to OSHA standards?

Accepted Answer

18.5% (19.5% per OSHA)

Answer

OSHA requires a minimum oxygen concentration of 19.5% for permit-required confined space entry to be considered safe.

Question 2

During a blowout, the first line of defense to control wellbore pressure is the:

Accepted Answer

Mud weight (drilling fluid density)

Answer

Primary well control relies on maintaining sufficient drilling fluid density to exert hydrostatic pressure that exceeds formation pressure.

Question 3

Which class of fire extinguisher is appropriate for electrical equipment fires?

Accepted Answer

Class C

Answer

Class C extinguishers use non-conductive agents suitable for energized electrical equipment fires.

Question 4

An environmental impact assessment (EIA) for a new drilling project is primarily used to:

Accepted Answer

Identify and mitigate potential environmental consequences before project approval

Answer

An EIA evaluates potential environmental impacts and proposes mitigation measures before regulatory approval is granted.

Question 5

The Safety Case regime, widely adopted offshore, requires operators to demonstrate that:

Accepted Answer

Major accident hazard risks are reduced to ALARP and a safety management system is in place

Answer

A Safety Case requires demonstration that major hazard risks are ALARP and that an effective SMS governs ongoing operations.

(SPE) Society of Petroleum Engineers Certification Practice Test