AEMC instruments 3640 Quick Start Manual

Hazmat Grounding & Bonding
Site Considerations
• Locate grounding points on the tankers and transfer pump.
• Make connections to damaged tanker first to avoid a potential spark.
• When possible, grounding systems should be established up hill and outside of the
Hot Zone.
• Resistance measurement should be compliant with your local jurisdiction which
usually follows NFPA 472 @1000or lessor NEC @ 25or less, lower is always
better. Higher resistance means longer static discharge time.
Installing the Grounding System
STEP 1:
WARNING
: Make sure the ground rod is fully screwed tight into the Driver/
Extractor tool before driving it into the ground to avoid thread damage.
• Install/establish three separate static grounding systems, one for the distressed
tanker (X1), one for the recovery tanker (X2) and one for the pump (X3). When the
pump is not mounted to the fire truck, they should be at least 10 feet apart.
• The grounding sites should be up hill and up wind as well as outside of the
distressed tanker's hot zone.
NOTE: One or more rods may be needed for each grounding system to obtain an
acceptable grounding resistance. Multiple rods should be 3 to 6 feet apart and
connected to each other via jumper cable.
AEMC Instruments • (800) 945-2362 •
®
www aemc.com 99-MAN 100438v3