The boiler is said to have exploded due to over pressure for some reason. Not sure what that necessarily has to do with fire safety practices? Maybe better wait for the report?
The main thrust of the article is the litany of previous dockyard fires and mishaps which have preceded this one. To quote:
”....
America’s Navy has seen these scenarios play out far too many times. In 2012, America lost the multibillion-dollar attack submarine USS Miami (SSN 755) because a shipyard worker, eager to leave work early, set the sub on fire. Last year, 11 U.S. sailors were injured in a fire aboard the USS Iwo Jima (LHD 7), a critical Marine-toting mini-carrier. USS Oscar Austin (DDG 79) also suffered a fire in November 2018, and subsequent damage will keep the ship out of the fleet for almost two years longer than planned. According to USNI News, the USS Fitzgerald (DDG 62) suffered a shipyard fire as well. In 2011, a fire torched the stacks of the USS Spruance (DDG 111). Other recent shipyard mishaps have included over $30 million worth of damage to the future destroyer Delbert D. Black (DDG 119) after a collision in April 2019. These, along with other avoidable incidents—fires at sea, groundings, collisions and other accidents—have essentially sunk or sidelined an entire U.S. battle fleet.....”