The BCU contains argon gas at what pressure?

• A. 3,000 psi.
• B. 1,000 psi.
• C. 10,000 psi.
• D. 7,500 psi.

Answer: (D)

Argon is used in the BCU as an inert purge and to drive gas-operated parts, so it must be stored at a high pressure to provide a quick, reliable feed when the system needs it. The reservoir is specified at 7,500 psi, which gives enough force to deliver gas rapidly to actuators and purge lines effectively while maintaining the inert environment. Lower pressures like 1,000 or 3,000 psi wouldn’t supply sufficient flow for timely actuation and purging, while a much higher pressure (such as 10,000 psi) could exceed the design safety limits. So 7,500 psi is the appropriate balance that aligns with the BCU’s requirements.