Product certification is both a barrier for entry and a moat for protection

By Xiao Peng

I remember it was the early summer of 2016 when we started the first batch of UL certification tests and inspections for our split-case fire pumps. Even though we had already performed multiple self-tests in accordance with the testing requirements stated in UL448 and had thoroughly prepared ourselves, we felt anxious and nervous. It was not just the fact that we were taking our maiden voyage; more importantly, the UL certification test seemed like a major hurdle as it was renowned for being rigorous.

Our first batch included five models of split-case pumps. Each model had to undergo performance testing for both the maximum and minimum impeller sizes, and these tests needed to be conducted under positive suction and negative suction conditions. In total, more than twenty tests were needed across all five models. How the results would turn out remained a mystery.

On the day of testing, UL engineer Mr.Bob Xia arrived as scheduled. After engaging in a detailed discussion of the testing process and methods with the team, Mr.Bob Xia started the testing. He carefully examined the pump installations, meticulously recorded the relevant instrument serial numbers and calibration labels, and verified painstakingly the calibration certificates for the instruments. This methodical process produced a set of valid data. Everyone felt a sense of relief after the smooth testing on the first day. On the second day, during the final positive suction performance test, Mr.Bob Xia noticed fluctuations in the performance data near the maximum power point. The uncertainty had us on the edge of our seats.

Although the data were still collected instantaneously, Mr.Bob Xia emphasized that the operating parameters had to stabilize for the data collection to be considered valid. He also wanted an explanation for fluctuations. We could not take Mr.Bob Xia’s meticulousness casually, so we immediately worked to identify the issue. Initially, our focus was on the discharge valve. Later, we discovered that the test was being conducted during a period of high electricity demand, which led to frequent fluctuations in the power grid frequency. Although we identified the cause of the problem, we could not address it immediately. If we would terminate the test, all the previous data would be invalidated. We have found ourselves in a predicament and had no option but to explain the situation to Mr.Bob Xia. We propose a solution, and Mr.Bob Xia kindly agrees to work overtime with us until the power grid frequency stabilizes, allowing us to resume the data collection process.

Later, when we received the certificates for completing UL certification, their importance was significant. Product certification has served as both an opportunity and a protection. It is precisely because of UL's high scientific standards and the dedication of UL engineers such as Bob Xia that UL certification has achieved credibility that has endured for over a century.