Arizona_Mike
Member
- Joined
- Feb 15, 2013
- Messages
- 3,452
OSHA Daily Permissible Noise Level Exposure is 8 hours a day at 90 db with the duration halved for every 5db increase up to 140dB. Above 140dB is considered damaging at any duration. In the range of some suppressed firearms the permitted duration gets down into the seconds.
90dB -- 8 hours
95dB -- 4 hours
100dB -- 2 hours
105dB -- 60 minutes
110dB -- 30 minutes
115dB -- 15 minutes
120dB -- 450 seconds
125dB -- 225 seconds
130dB --112 seconds
135dB -- 56 seconds
140dB -- 28 seconds
I found this example on line and it appears that 2ms would be very conservative for this gun (handgun?).
This source says 3-5ms, I'm going to go with 5ms.
Giving:
130dB -- >22,000 gunshots/day
135dB -- >11,000 gunshots/day
140dB -- >5,000 gunshots/day
Does that sound about right?
I think anyone coming even close to this exposure is having a lot more fun than I am.
Mike
90dB -- 8 hours
95dB -- 4 hours
100dB -- 2 hours
105dB -- 60 minutes
110dB -- 30 minutes
115dB -- 15 minutes
120dB -- 450 seconds
125dB -- 225 seconds
130dB --112 seconds
135dB -- 56 seconds
140dB -- 28 seconds
I found this example on line and it appears that 2ms would be very conservative for this gun (handgun?).
This source says 3-5ms, I'm going to go with 5ms.
Giving:
130dB -- >22,000 gunshots/day
135dB -- >11,000 gunshots/day
140dB -- >5,000 gunshots/day
Does that sound about right?
I think anyone coming even close to this exposure is having a lot more fun than I am.
Mike
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