The use of Pipeline Inspection Gauge “PIG”, allows for the pipeline operator to perform required maintenance operations without stopping the flow of product in the pipeline.  Modern PIG’s use sophisticated instruments to collect pipeline data and often require the use of onboard batteries to power the electronics.  In addition, due to the various location of pipelines and pipeline materials/thickness, the onboard electronics not only need to store the data for the duration of the service, but utilize locational technology to correlate the acquired data.

As government regulations start requiring more frequent inspections and the increase in sensors/data on the PIG, the use of high energy and reliable batteries are required to meet the growing power demand.  Coupled with operating temperature environments’ above 100°C lithium non-rechargeable batteries are the technology of choice.

Chemistry

Lithium Sulfuryl Chloride (Li-SO2Cl2)–   With its stable operating voltage (3.9V OCV), high energy/power capability and superior low temperature capability  over other lithium non-rechargeable chemistries  (-40°C to 100°C), Li-SO2Cl2 has been the chemistry of choice for the pipeline inspection industry for the past 20 to 30 years. Engineered Power manufactures the Li-SO2Cl2 chemistry for PIG applications primarily in DD cell sizes.

Lithium Thionyl Chloride (Li-SOCl2)–   With its stable operating voltage (3.67V OCV), high energy/power capability and wide operating temperature capability (-55°C to 225°C), Li-SOCl2 has been the chemistry of choice for the oil/gas industry for the past 20 to 30 years. Engineered Power manufactures the Li-SOCl2 chemistry for PIG applications primarily in DD cell sizes with high power/energy capabilities: