Palo Verde provides the following response:

Palo Verde uses the Eberline PNR-4 and calibrates to 4.5, 24, and 202 mrem/hr 
with a AmBe neutron calibrator and pulses to an equivalent of 2.5, 25, 250, and 
2,500 mrem/hr

Electronic pulse calibration is considered an acceptable practice

We are committed to ANSI N323-1978

From: [email protected] [mailto:[email protected]] On Behalf Of 
Danek, Joe
Sent: Thursday, July 12, 2012 12:58 PM
To: [email protected]; Danek, Joe
Subject: Powernet: Calibration of neutron survey meters

For ASP1/NRD's (?) neutron survey meters, calibration currently sent to a 
vendor for annual calibration. The vendor's neutron source allows for 
calibration up to 200 mrem/hr. For the higher range, up to 1000 mrem/hr, 
electronic pulse calibration is performed. Please provide responses for;
1). What do you do for calibrations, and particularly at the higher range?
2). Is electronic pulse calibration an acceptable practice ?
3). In addition to ANSI N323-1978 & ANSI N323A-1997, can you list any other 
reference documents, and in particular for use of electronic pulse calibrations?

Thank you,
Joe Danek
Corporate RP
Florida Power & Light / NextEra Energy
[email protected]
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