Immediate, During Accident and in Automatic Section when to be protected , Detention exceeds 15 min, Protection During failure, obstruction and kept at FSS when, Detonators, Audible Equipment(signal)for protection during abnormal conditions , flasher light, Red flag andflashing red light, Equipment available for immediate protection of adjacent line, 600 m -1d / 1200 m -3d, At where Detonator has to be kept on Absolute area, 600, 1200, In Automatic area Adjacent line to be protected by detonator at _____m 1d and ______m by 3d, 90 m -1d / 180 m- 2 d, At where Detonator has to be kept on Automatic area when wheels on the rail.

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