Two Navy sailors were injured Saturday during a “routine” test on a nuclear submarine docked in a naval shipyard in Washington State, according to reports.

The USS Louisiana ballistic missile submarine “experienced a problem in the forward crew access compartment while conducting a routine compartment air test,” a rep for the Puget Sound Naval Shipyard and Intermediate Maintenance Facility told CNN.

“The boat’s nuclear propulsion space was not affected,” said the spokesperson, Anna Taylor.

The malfunction caused a loud sound, a dislodged scaffolding enclosure and “other equipment,” Taylor told The Kitsap Sun.

Residents heard loud explosions about 12 p.m. Saturday in the area, the outlet reported.

The two sailors reportedly suffered non-life-threatening injuries and were taken to a medical facility. Their exact condition is not known.

Five other sailors were evaluated by Navy medical personnel but they did not need treatment, according to the spokesperson.

The test at the 560-foot USS Louisiana — located in Bremerton on Washingtons’ Kitsap Peninsula since 1997 — was suspended after the incident.