All,
A few of my personal notes from what I learned at an SDG&E public presentation on this topic Spring 2018, these notes mostly came from the Q&A. The most relevant page in the power point Rob forwarded is page 8:

• along with "back country", power shutoff can/will also affect the wildland urban interface (WUI), those areas that border "open space".  Deep urban dwellers not so much unless a major transmission line is shut down
  
• "Patrolled"= inspected.   SDG&E has no other means to determine grid integrity than eye-balls, either in trucks or helicopters
• a multi-day Santa Ana event (we know what those are like) will postpone the start of inspections until forecast wind conditions are below SDG&E's hazard thresholds
• along with forecast wind gust thresholds, there are forecast sustained wind thresholds that will hold the start of inspections
• a three-day Santa Ana event means grid sections that have been turned OFF, will likely not be re-energized until the end of day four at earliest depending on the availability of inspection resources
  
• commercial and residential restoration is the lowest priority
  
• how many $'s worth of frozen goods will thaw to an unsafe temperature after four days?
• how many $'s worth of refrigerated goods will warm to an unsafe temperature after four days?
• if your water source is an on-site well, do you have four days worth of pumped storage?
• back country fire stations that depend on well water are equally affected. Separately, a Cleveland NF fire captain told me his stations are not equipped with gensets, nor are Cal Fire stations
  
• ha! I have solar! Grid-connected solar will be automatically OFF during PSPS events for SDG&E worker safety
  

IMHO, Santa Ana event prep now includes genset and fuel for four days. ready. set. go.

Respectfully,
Dennis
KA6DUH

 

ARES Members,

Attached for your situational awareness is a Sempra presentation on
the Public Safety Power Shutoff (PSPS) program.

As you know, when the power drops, we start to lose cell towers and
repeaters because back-up power supplies do not always work.

.. . . Rob
K6RJF

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Posted by: Dennis Peck <ka6duh@...>

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