# Presentation: 083317

## SURFACE

**NOISE CONTROLS**

## Source       Path     Receiver

## NOISE EXPOSURE CAN BE REDUCED BY: 

- APPLYING CONTROLS TO THE SOURCE (S)
- BLOCKING THE PATH (S)
- ENCLOSING THE RECEIVER

## BARRIERS ON DRILL MASTS

**Notes:**
THESE ARE SOME EXAMPLES OF APPLYING CONTROLS TO THE NOISE SOURCE

## DRILL EXHAUST MUFFLERS

**Notes:**
MUFFLERS ARE AN OTHER CONTROL THAT CAN BE APPLIED

## HAMMER COVERS

**Conveyor Belting Over a Hammer**

**Notes:**
THESE EXAMPLES SHOW THAT THE HAMMER OR DRIFTER CAN BE COVERED ON THE SIDE FACING THE DRILL OPERATOR

## Drill

**Barrier**

**Shadow Zone**

**Operator**

**Notes:**
THIS ILLUSTRATES THE RESULT OF PLACING A 
BARRIER BETWEEN THE DRILL AND THE OPERATOR

THE OPERATOR IS PLACED IN AN ACOUSTICAL SHADOW ZONE

## HOMEMADE BARRIERS FOR DRILL OPERATORS

**Notes:**
HERE ARE A COUPLE OF EXAMPLES OF SIMPLE BUT EFFECTIVE BARRIERS

## THREE SIDED ENCLOSURE

**Notes:**
THESE THREE SIDED ENCLOSURES PROVIDE EVEN GREATER PROTECTION - 

## OPERATOR CONSTRUCTED CABS

**Notes:**
THESE  ARE TWO EXAMPLES OF OPERATOR CONSTRUCTED CABS ON SMALL AIR TRACK DRILLS 

## Former Farm Equipment Cab Converted To A Portable Crusher Booth  

**Notes:**
THE CAB FROM A PIECE OF FARMING EQUIPMENT  WAS MOUNTED ON A PLATFORM ATOP A HYDRAULIC LIFT.  IT CAN BE LOWERED AND THE HITCHED TO A PICKUP TRUCK FOR EASY RELOCATION 

## Original Equipment Manufacturers Cabs

**Notes:**
NEWER AND LARGER EQUIPMENT COME WITH ENCLOSED CABS

## OPERATOR & HELPER CABS

**CABS**

**Notes:**
THIS SURFACE AUGER HAS TWO SEPARATE CABS 

## INTERIOR  RETROFIT

**Notes:**
IF THE INTERIOR OF A CAB IS BARE IT CAN BE TREATED WITH ACOUSTICAL MATERIALS THAT WILL ABSORB AND OR BLOCK SOUND.

THIS ILLUSTRATES TREATMENT TO THE FIREWALL AND THE AREA AROUND THE OPERATOR

##        FLOOR TREATMENTVIBRATION DAMPING              ACOUSTICAL FLOORMAT

**Notes:**
THE FLOOR IS FIRST TREATED WITH BLUE VIBRATION DAMPING MATERIAL AND THEN COVERED WITH AN ACOUSTICAL FLOOR-MAT

## AFTER MARKET SKIN KIT

**Notes:**
IN SITUATIONS WHERE THERE ISN’T A CAB AN AFTER MARKET SKIN KIT CAN BE  “U”  BOLTED TO THE EXISTING ROPS
ON THE RIGHT SIDE OF THIS SLIDE IS AN EXAMPLE OF THE FRONT BARRIER OF A SKIN KIT  

## THE HOPPER IS MONITORED FROM THE CONTROL BOOTH

- Camera

**Notes:**
THE USE OF REMOTE VIDEO CAMERAS CAN AID NOT ONLY IN PRODUCTION BUT HELP TO KEEP THE CRUSHER OPERATOR INSIDE A BOOTH

## OPERATOR CONSTRUCTED ENGINE COVER

**Notes:**
THIS IS AN EXAMPLE OF AN OPERATOR CONSTRUCTED AND ACOUSTICALLY TREATED ENGINE PANEL

## Maintain Your Noise Controls

- Exhaust components should be inspected and repaired when needed
- Barriers should be cleaned and inspected
- Acoustical materials should be replaced when worn or removed for servicing
- Cabs or booths should be maintained
- Engine covers should remain on when in use

## Additional Resources

**www.msha.gov/1999noise/Guides/SurftotalFinal.pdf**

**Notes:**
THESE RESOURCES CAN BE EASILY LOCATED SIMPLY GO TO WWW.MSHA.GOV (LOWER CASE)

ON THE LEFT SIDE OF THE PAGE IS A HEADING TITLED “SPECIAL INITIATIVES”.

CLICK ON THE”NOISE RULE” AND THEN CLICK ON THE RESOURCE PAGE

##  Your children can whisper to you now,

** ****Your children can whisper to you now,**
**Don’t make them shout at you in the future**