When should igniters installed in rocket motors be checked for continuity?

When should igniters installed in rocket motors be checked for continuity?

• A. Any time
• B. Only in an enclosed shelter
• C. Only on the launch pad when ready for launch
• D. Igniters should never be checked for continuity while installed in a rocket motor

Answer: (C)

Testing igniter continuity checks that there is a complete electrical path from the firing source to the igniter, confirming that current will reach the element and ignite it. This should be done only when you are on the launch pad and ready to launch, so the check occurs in a controlled, safety-minded context and the circuit can be disconnected immediately after verification. Conducting continuity checks in storage or other non-pad environments increases the risk of accidental ignition or damage to the igniter, since a live circuit could be energized or mishandled. By performing the test on the pad just before launch, you ensure proper arming procedures, minimize the time the circuit is energized, and maintain safe handling practices.

Testing igniter continuity checks that there is a complete electrical path from the firing source to the igniter, confirming that current will reach the element and ignite it. This should be done only when you are on the launch pad and ready to launch, so the check occurs in a controlled, safety-minded context and the circuit can be disconnected immediately after verification. Conducting continuity checks in storage or other non-pad environments increases the risk of accidental ignition or damage to the igniter, since a live circuit could be energized or mishandled. By performing the test on the pad just before launch, you ensure proper arming procedures, minimize the time the circuit is energized, and maintain safe handling practices.