All emergency sirens in the 10-mile zone surrounding the Indian Point Nuclear Power Plant worked during testing Wednesday.

Entergy, which owns the plant, says spotters were placed in the field to confirm the test results. Entergy spokesman Jim Steets says all 156 sirens sounded in Westchester, Rockland, Putnam and Orange counties and the computer verified the results.

A computer glitch occurred during a test of the sirens last week so officials could not verify which sirens worked. Entergy has agreed to replace the emergency notification system by January 2007 and testing on the new system could begin in October.

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