ML19338F162
| ML19338F162 | |
| Person / Time | |
|---|---|
| Site: | Allens Creek File:Houston Lighting and Power Company icon.png |
| Issue date: | 10/02/1980 |
| From: | NRC OFFICE OF THE EXECUTIVE LEGAL DIRECTOR (OELD) |
| To: | Atomic Safety and Licensing Board Panel |
| Shared Package | |
| ML19338F156 | List: |
| References | |
| ISSUANCES-CP, NUDOCS 8010070581 | |
| Download: ML19338F162 (2) | |
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UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION BEFORE THE ATOMIC SAFETY AND LICENSING BOARD In the Matter of
)
HOUSTON LIGHTING & POWER COMPANY Docket No. 50-466
)
(Allens Creek Nuclear Generating
)
Station, Unit 1)
)
NRC STAFF STATEMENT OF MATERIAL FACTS AS TO WHICH N0 GENUINE ISSUE EXISTS TO BE HEARD 5
1.
A pulse dose rate of 10 rads /sec. is required to adversely affect semiconductor devices.
6 2.
A total dose rate of 10 rads is required to produce changes in the operation of these components.
4 3.
A maximum plume radiation level during normal plant operatien a: Dig Rock Point nuclear reactor (the reactor referenced by TEXPIRG) is
-0 9 to 11 X 10 r/ hour.
4.
Aircraft are designed to operate at cosmic radiation levels of 60 to
-6 600 X 10 r/ hour.
5.
Aircraft are designed to operate at radiation levels approximately 3 to 30 times greater than those levels experienced during normal reactor opera tion.
6.
The radiation field of a normally operating reactor is estimated to be 13 about a factor of 10 times less than the dose rates considered to produce electronic equipment malfunction.
8010070 5 74
! 7.
If it is ae,ied that the entiro end-of-life inventory of gaseous fission products of a reactor is dispersed after an accident, the maximum hypothetical radiation dose rate (pulse) of an aircraft entering the radioactive cloud is 0.69 r/sec. which is a factor of 140,000 below the dose rate required to cause electronic equipment mal function.
8.
The maximum total dose received by an aircraft flying through tha radioactive cloud would be approximately 3.1 rads. This is a factor 5
of 3.2 X 10 belos. the total dose required to produce slight malfunctions in electronic components.
9.
Aircraft flying near ACNGS will not suffer failure or degradation of guidance system circuits due to the so-called " latching" of ions produced by airborne radiological emissions 'from ACNGS.
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