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Greatest Rejuvenation Risks

June 9, 2010

Biggest Risk is Electrical


What are the greatest risks associated with rejuvenation of medium voltage power cables?

Click on the video link below where I demonstrate the greatest risk of rejuvenation—and don’t try this at home.

Rejuvenation is inherently safer than replacement. When rejuvenating cable the electrical risk is the biggest risk by far. For a thorough description of all of the dimensions of rejuvenation safety, including even more about electrical contact, my colleagues, Rich and Glen provide an 84-page treatise, “A Comparison of Rejuvenation Hazards & Compatibility.” That tome is available on-line at:

From that document I have copied the graph below. Don’t worry there will not be a quiz and you do not need to pull out your reading glasses. The risks are enumerated and categorized in the aforementioned tome, and the risk identified as “1.1” is the electrical contact risk. You will find 1.1 in the upper-right-hand corner of the figure. All of the other risks pale by comparison and lie below and to the left of the electrical contact risk. The scales are logarithmic, so differences in risk assessments are larger than they appear.

Patented Novinium technology reduces exposure to this risk in several ways. First the period of time that injection bottles are connected to energized cables is considerably less than with older approaches. The probability that a leak will occur is related to the length of time that a feed or a soak bottle is connected to a cable. Whether utilizing Novinium’s patented sustained pressure rejuvenation (SPR) or the older unsustained pressure rejuvenation (UPR), Novinium’s patented catalyst technology eliminates the need for a soak period completely. Approaches that don’t utilize Novinium’s patented catalyst technology require soak periods of 60 days or more for most 7-strand and 19-strand conductors. Utilizing Novinium technology typically reduces the exposure to leaking fluids over 60 times. When UPR is utilized Novinium also uses patent pending technology to mitigate the probability of injection port flashover. The picture nearby shows a low amperage laboratory flashover. The mitigation technology is called a reticular flash preventer or RFP. This issue and the solution are described in some detail at …

My advice to you is to never compromise safety. State-of-the-art patented and patent pending technology, soak-free injection processes, and RFP flash-over prevention are available only from Novinium and our partners.