When an exchanger is blinded, spacers are used to space open the exchanger side for steaming or nitrogen purge. What is the purpose?

When an exchanger is blinded, spacers are used to space open the exchanger side for steaming or nitrogen purge. What is the purpose?

• A. To space open the exchanger side for steaming or nitrogen purge
• B. To seal leaks
• C. To stop flow
• D. To support insulation

Answer: (A)

When you need to purge or steam an exchanger, you must keep a clear path through the side that’s blinded so the purge gas or steam can circulate. Spacers between the blind and the exchanger side create that controlled clearance, allowing the purge medium (steam or nitrogen) to sweep along the interior surfaces, displacing residual liquids or vapors and preventing pockets of vapor from forming. The spacer also protects the blind and its seal from direct contact during the purge, reducing the risk of damage. That’s why the purpose is to space open the exchanger side for steaming or nitrogen purge. The other options don’t fit because sealing leaks, stopping flow, or insulating support aren’t about enabling the purge flow.

When you need to purge or steam an exchanger, you must keep a clear path through the side that’s blinded so the purge gas or steam can circulate. Spacers between the blind and the exchanger side create that controlled clearance, allowing the purge medium (steam or nitrogen) to sweep along the interior surfaces, displacing residual liquids or vapors and preventing pockets of vapor from forming. The spacer also protects the blind and its seal from direct contact during the purge, reducing the risk of damage.

That’s why the purpose is to space open the exchanger side for steaming or nitrogen purge. The other options don’t fit because sealing leaks, stopping flow, or insulating support aren’t about enabling the purge flow.