Anti Static Measures/ Static electricity Controlling measures in Pharma industry

ANTI STATIC MEASURES-TANK FARM
Grounding and Bonding during Transfer of liquids to and fro road
vehicles
1. Solvent Storage tank, Transfer Pump and Solvent tanker must
be grounded individually.
2. Permanent transfer line must be a conductive and jumpers to be
provided to its each flange joint.
3. If the Pump suction line is conductive (metallic) provide
jumpers only for the flange joints.
4. If the pump suction line is non-conductive (HDPE/ Nylon
braided/ Rubber etc…) provide bonding along with non
conductive hose.
ANTI STATIC MEASURES – RECEIVING TANKS
The splashing & impingement on surfaces associated with free
fall of low conductivity liquids are sources of Electro Static
Charge. Free fall should be avoided in tanks either by
arranging for bottom entry of the liquid or by the use of a fill
pipe extending to the bottom of the tank without actually
touching it.
Grounding and Bonding during receiving flammable solvents
into a tank
1. Ground the source tank/ barrel/ equipment.
2. Ground the pump/ charging line.
3. Ground the receiving tank.
4. For effective continuity provide jumpers to each flange
joint of transfer line.
5. If the charging line is conductive (metallic) continuity
jumpers to every flange joint are enough.
6. If the charging line is non-conductive (HDPE/Nylon
braided/ Rubber etc…) also provide bonding along with
non conductive hose.

ANTI STATIC MEASURES-CENTRIFUGE
Grounding and Bonding during feeding material from reactor to centrifuge
1. Reactor and Centrifuges must be grounded (Double earthing).
2. Provide jumpers for all flange joints of this system for effective
continuity.
3. If the feeding line is conductive (metallic) provide jumpers only for the
flange joints.
4. If the feeding line is non-conductive (HDPE/ Nylon braided/ Rubber
etc…) provide bonding alongside of the feeding line.
5. Also inertize the centrifuge before starting the centrifuge and
continue the bleeding until completion of the job.

ANTI STATIC MEASURES – MILLING
Possibility of Static Electricity generation is present in the milling of chemical
powders also. The accumulation of this static charge may leads to Fires and
explosions. By following some simple anti static measures we can prevent the
accidents of static charge accumulation.
1. Ensure that the Equipment is properly grounded (Double earthed).
2. Provide jumpers at the bolt or clamp points, where non-conductive gaskets
present.
3. Provide earth rod/ earth clamp in the container of material to be milled
4. Provide earth rod/ earth clamp in the milled material collection container.
5. Provide the earth provision to the material charging scoop.
6. Use preferably Metal containers and Anti-static polythene bags in this activity.
7. If the containers are metallic provide earth clamp to them. If those are non conductive
like HDPE /PVC keep earth rod into the container
8. Use Anti-static shoe, Cotton apron and appropriate PPE as required.



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