Presented at the Safety Meeting on 18th September at Cairn India's Barmer Site.

1. Static Electricity
Safety Presentation
18-09-2015

2. Static Electricity
Imbalance of electric charges
On the surface of or within a material; remains until discharged or electrified

3. Between
materials
in contact
Triboelectrification
During
Storage
and
Transport
of Liquids
Liquid-shear
Between
materials
not in
contact
Induction
Can be Induced by…

4. Between 2
conductors not in
contact
Spark Discharge
Other discharge
forms are usually
non-hazardous in
process industries
Fire
Can Cause…

5. Bonding Grounding
Humidification
Anti-static Agents Conductive Materials Reduced Flow Velocity
Prevention

6. Chemical
Transfer
• VM&P Naphtha Transfer from Tanker-Trailer to
Day Tanks
• At Barton Solvents Wichita Facility, Kansas
Spark Discharge
• Low Conductivity;
• Static Electricity buildup;
• Improper design
Fire
• Class 1B
Flammable
Liquid;
• Ignitable
vapor-air
Mixture
Barton Solvents – Case Study by CSB
Explosion; 12 people injured; 6,000 people evacuated
Metal piece from
Day Tank found
130 feet from
original location

7. Accident causes Recommendations

8. Thank you!
• References / Picture Sources
• http://www.csb.gov/assets/1/19/csb_study_barton_final.pdf
• http://web.mst.edu/~dludlow/classes/che258/Static%20Electric
ity%20and%20Charge%20Accumulation.ppt
• http://sciencebehindelectricity.weebly.com/static-
electricity.html
• http://www.shimadzu.com/an/hplc/support/qn50420000002ba
d-img/qn50420000006ji2.gif
• http://electrical4u.com/electrical/wp-
content/uploads/2013/03/electrostatic-induction1.png
Karthik
KArunachalam2@slb.com