Seismic Monitoring

Question 1

What is the P.S. to the basic and supplimental motion recorders?

P.S. to Earthquake force monitor (Seismic Instrument Rack)?

P.S. to Rx Seismic Trip System?

Answer 1

Basic and supplimental - PY-14 each has internal batt b/u

Earthquake force monitor - PY-13

Rx Seismic Trip System - PY-11, 12, 13

Question 2

What will activate Basic motion recorders?

What will activate Supplimental motion recorders?

Answer 2

basic

• any basic > 0.01 g = individual starts
• common > 0.01 g (ESTA01 or 28) = all basic start

Supplimental

• any supplimental > 0.008 g = individual starts
• common > 0.008 g (ESTA20 and 27) = all supp start
• cross, ESTA01 or 28 = all basic and supp start

Question 3

How many motion recorders/ accelorometers are in the following subsystems of Seismic Monitoring?

Basic

Supplimental

Siesmic trip

Answer 3

Basic - 6

Supplimental - 13

Trip - 3