Two years after 15 people died in the West fertilizer plant explosion, the full House on Friday gave tentative approval to a bill that would tighten the state’s regulation of ammonium nitrate storage and add safeguards for dealing with the dangerous chemical.

But the measure, which is the first West-related bill since the blast to advance out of committee, wouldn’t require sprinkler systems or other chemical safety measures that could help prevent future explosions. And a number of other bills aimed at addressing some of the problems uncovered in the aftermath of the explosion have gained little traction in the Legislature.

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