ML20003H806
| ML20003H806 | |
| Person / Time | |
|---|---|
| Issue date: | 12/31/1977 |
| From: | Clark R Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML17209B280 | List: |
| References | |
| RTR-REGGD-05.012, RTR-REGGD-5.012 NUDOCS 8105070471 | |
| Download: ML20003H806 (3) | |
Text
.
- 89 69 49 9 e,....
[
fvuCLEAR REGULATORY cOMMisslON y )7 s e /g j, i ep'. ;
was,~cTon. o c.ms,
'M' P00R ORIGINAL p-
'.27 7 MEMORANCUM FOR: Reactor Safeguards Licensing Branch, DOR FROM:
Robert A. Clark, Chief, Reactor Safeguards Licensing Branch, DDR
SUBJECT:
PERFCD'.ANCE OF X-RAY DEVICES - REVIEW GUIDELINES #4 All liter. sees are required to search packages entering the protected This search may be conducted by X-ray devices.
Enclosed is a area.
standardized procedure that is acceptable to assure the X-ray devices are operating properly.
- ~
ti f;
$ k.'.
~ S-Robert A. Clark, Chief Raactor Safeguards Licensing Branch Division of Operating Reactors cc:
J. R. Miller J. M. Ellictt ll 4*
l 8105070
6 D
P00R ORIGIMI.
Performance of X-Ray Devices Ecutement Performance Standard:
(1) An X-ray monitor must be able to image and an operator must be able to see an insulated 24 gauge solid copp'er wire.
Coerator Performance Standard:
(1) Operators of an X-ray monitor must be trained to recognize unauthorized articlei, including weapons, explosives and incen-diary devices in X-ray images.
X-ray Ima;ing Testing:
(1) At least quarterly, each X-ray system shall be tested to assure that the monitor will image and an operator can see insulated 24 guage solid copoer wire.
(2) A wire test kit is used consisting of samples of 20, 22, 24 and 26 gauge solid copper wire.
i (3) The wire test samples are placed in X-ray systems in the same way
)
packages are introduced.
If the 25 guage wire can be seen, the X-ray exceeds performance standards.
If the 24 guage wire can be seen clearly, the X-ray is acceptable.
If 22 guage wire can be seen clearly but not 2a guage, the X-ray monitor must be repaired or replaced within AS hours.
If 20 guage wire can be seen but not 22 or 24 guage, the X-ray monitor must be repaired w
P00R ORIGINAL 2
or replaced witnin 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
If 23 gauge wire cannot be seen, the Items mast be X-fey cannct be used f r the s:reening of pa:kages.
physically inspected.
X-ray Ocerator Testine:
An ev:Tuation of operator perforr.ance is conducted at least quarterly (1)
Tne procedures set forth below are followed using at es:h X-ray syste.
as tne test object guns desigr.ed for calibration of detector testing.
.25 auto.. tic, General Precision Model 20.22LR,
(;0LT.25 a;t: atic, Tite C:M.22 cal.)
The test object is positioned in a package so that a clear t.ndisguised (2) lateral (profile) image would logically be projected on the monitor during X-ray inspection of tne pa:kage.
The person conducting the test presents the package for inspe: tion just (3) as any person would - with ut prior notification or identification.
If the o erator detects the object, he or she is appropriately credited.
l (4) is visible on the monitor and is not detected by (5) If the test obje::
the operator, arrangements are c.ade for corrective action such as training, supe
- vision, disci linary actien, etc.
If a : lear ir. age of th'.est object is not visible on the X-ray monitor, (6) l the wire test is condacted to make certain the X-ray is operating l
satisfactorily.
If it is, the operator test is repeated.
If not, appropriate corrective action is taken.
__