May 16 2018

Generator Fuel Testing

Category: BlogBKeyes @ 12:00 am
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Q: What are the guidelines on the diesel fuel test for the generator as far as having it treated or a sample sent off for testing?

A: The new 2012 Life Safety Code references the 2010 edition of NFPA 110, the standard for emergency and standby power systems. Section 8.3.8 of the NFPA 110-2010 requires the fuel for the generators to be tested annually for quality. According to more recent editions of NFPA 110, this test is to be conducted in accordance with ASTM D975, Standard Specification for Diesel Fuel Oils. You may purchase a copy of the standard direct for the ASTM website https://www.astm.org/Standards/D975.htm

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Jan 19 2018

Generator Testing

Category: BlogBKeyes @ 12:00 am
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Q: We have a generator that doesn’t meet the 30% load for the monthly run so we have to do an annual run with the load at 50% for 30 min and 75% for 60 min for a 90-minute continuous run. Our contractor did the annual run but he ran it with 52 % for 30 min , 75% for 30 min and 81% for 30 min, then he continued to run it for 2½ more hours dropping the percentages as he went for 4 continuous hours at not less than 30%. My question is does these meet the intent of the standards for both an annual and a 3-year load test?

A: Yes… I would say the test as you described meets both the annual requirements and the 3-year test requirements. The generator load testing requirements are minimum load settings, and it is permitted to exceed these minimums.

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