In the latest of a string of fire system deficiencies on Wednesday September 30th, LANL management declared the fire suppression system inoperable in PF-4 at TA-55. Facility activities were placed in stand-by mode, which were still stood down as of three weeks later on Oct. 23rd.
DNFSB explained that the stand down was based on recent hydraulic calculations that concluded the system does not achieve the water density coverage required. Basically, the sprinklers in 13 of approximately 100 fire suppression areas at PF-4 cannot meet the current required gallons per minute estimated to effectively extinguish a fire. (Read the Oct. 2nd-23rd DNFSB reports)
One has to wonder – What is the cost to the taxpayer of PF-4 being stood down for nearly a month?
These reports come on the heels of last week’s DNFSB recommendation that the Lab must immediately do something about its risk to the public of a seismically induced fire at PF-4, which was estimated to exceed the DOE guidelines by more than 100 times. In a worst-case situation, an earthquake-induced fire could set free enough breathable plutonium that a person on the perimeter of the facility would receive a lethal dose of radiation.
Speaking of seismically induced fires, I am reminded of a March 2007 LANL report, Seismic Fragility of the LANL Fire Water Distribution System (LA-14325), which explains how numerous valves in the fire water distribution system at the Lab would have to be manually closed to insure proper pressure to facilities on fire after a seismic event.
Granted, these may be low probability events, but they have high consequences. The Lab is playing with fire by not adequately funding upgrades to its existing fire systems now, before embarking construction of any new facilities.
