ASTM F1468-04a
(Practice)Standard Practice for Evaluation of Metallic Weapons Detectors for Controlled Access Search and Screening
Standard Practice for Evaluation of Metallic Weapons Detectors for Controlled Access Search and Screening
SIGNIFICANCE AND USE
The significant attributes of this practice are the methods for determining the detection capabilities of metal detectors, the methods for determining the effects of outside influences on detectors, and certain safety requirements for detectors.
While this practice was originated for walk-through metal weapons detectors, it is equally applicable to detectors of other metal objects. The innocent objects set (15.1.2) would require modification commensurate with the size of the other object to be tested; some tests may not be applicable and other specific and different tests may be necessary.
This practice includes testing site requirements (Section 6) to minimize data variations. These methods may be used at nonconforming sites if site-related disturbances are considered and accounted for.
This practice is not meant to constrain designs but it is applicable only to detectors which are designed for individual walk-through. The portal structure shall be deemed to meet this criterion if it provides a minimum vertical clearance of 1.96 m (77 in.) and a minimum horizontal width clearance of 0.66 m (26 in.).
This practice recognizes that the complex movements of a test object when carried by a person walking through a detector limits the precision and repeatability of the resultant observed signals. Averaged results from repeated tests under identical controlled conditions are recommended to obtain a better approximation of the underlying hypothetical true value for that set of conditions.
Where the term “significant” is used, it refers to phenomena which, in accordance with accepted engineering practices, exceed the normal variation of data.
SCOPE
1.1 This practice establishes standard methods for the evaluation of walk-through metal weapons detectors and criteria for testing metal detection performance.
1.2 This practice specifies certain health, safety, and human factors criteria pertaining to the usage of the detection equipment.
1.3 This practice requires the use of non-standardized (user-supplied) test objects and test equipment. Evaluations made using the procedures outlined in this practice can be used for comparative evaluations only if the tests are made with the same equipment and test objects.
1.4 This practice is intended for use by manufacturers and evaluators of electromagnetic field devices used for screening persons entering into controlled access areas. It is not intended to set performance nor limit or constrain operating technologies, nor is it a document for use by individual operators or users of such equipment at specific access control points.
1.5 The values stated in SI units are to be regarded as the standard. Other units given in parentheses are for information only.
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For a specific hazards statement, see warning note in 12.2.5.
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: F1468 – 04a
Standard Practice for
Evaluation of Metallic Weapons Detectors for Controlled
1
Access Search and Screening
This standard is issued under the fixed designation F1468; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Terminology
1.1 This practice covers methods for the evaluation of 3.1 Definitions of Terms Specific to This Standard:
walk-through metal weapons detectors and criteria for testing 3.1.1 clean tester—person who does not carry any objects
metal detection performance. which would significantly alter the signal produced when the
1.2 This practice specifies certain health, safety, and human person carries a test object; smaller test objects require more
factors criteria pertaining to the usage of the detection equip- complete elimination of metallic objects. By example but not
ment. limitation, such significant objects may include: metallic belt
1.3 Thispracticerequirestheuseofnon-standardized(user- buckles,metalbuttons,cardiacpacemakers,coins,metal-frame
supplied) test objects and test equipment. Evaluations made eye glasses, hearing aids, jewelry, keys, mechanical pens and
using the procedures outlined in this practice can be used for pencils, shoes with metal shanks or arch supports, metallic
comparative evaluations only if the tests are made with the surgical implants, undergarment support metal, and metal
same equipment and test objects. zippers. A clean tester passing through a metal detector shall
1.4 This practice is intended for use by manufacturers and not cause a disturbance signal greater than 10% of that
evaluators of electromagnetic field devices used for screening produced when carrying the critical test object through the
persons entering into controlled access areas. It is not intended detector. The tester shall have a mass between 50 and 100 kg
to set performance nor limit or constrain operating technolo- (110and220lb)andaheightbetween1.50and1.90m(59and
gies, nor is it a document for use by individual operators or 75 in.). If the detector is designed to be sensitive to body size
users of such equipment at specific access control points. because of design or desired sensitivity, the physical size of
1.5 The values stated in SI units are to be regarded as the testers should be smaller and within a narrower range.
standard. Other units given in parentheses are for information 3.1.2 critical orientation—orientationofatestobjectwhich
only. produces the smallest detection signal or weakest detection.
1.6 This standard does not purport to address all of the 3.1.3 critical sensitivity setting—sensitivity setting of a
safety concerns, if any, associated with its use. It is the detector at which the critical test object in its critical orienta-
responsibility of the user of this standard to establish appro- tion is detected at a 90% or greater rate at the weakest or
priate safety and health practices and determine the applica- critical test point for the detector.
bility of regulatory limitations prior to use. For a specific 3.1.4 critical test object—testobjectoutofagivengroupof
hazards statement, see warning note in 12.2.5. objectswhich,initsworst-caseorcriticalorientation,produces
the worst-case or critical sensitivity setting for a specific
2. Referenced Documents
detector. The group shall comprise one or more objects which
2.1 ANSI/IEEE Standard:
are to be detected under the same detector settings.
C62.41 IEEE Guide for Surge Voltages in Low VoltageAC 3.1.5 critical test point—location within the passage open-
2
Power Circuits
ing of a detector portal which produces the weakest signal
response(thecriticalsensitivity)forthecriticaltestobjectatits
critical orientation.
1
This practice is under the jurisdiction of ASTM Committee F12 on Security
3.1.6 detector—synonym (used in this practice for brevity)
Systems and Equipment and is the direct responsibility of Subcommittee F12.60 on
for a walk-through device for detecting weapons such as
Controlled Access Security, Search, and Screening Equipment.
Current edition approved May 1, 2004. Published May 2004. Originally
defined in 3.1.14.
approved in 1993. Last previous edition approved in 2004 as F1468 – 04. DOI:
3.1.7 discrimination ratio—expression of a detector’s abil-
10.1520/F1468-04A.
2 ity to discriminate between a weapon and innocent personal
Available from Institute of Electrical and Electronics Engineers, Inc. (IEEE),
445 Hoes Ln., P.O. Box 1331, Piscataway, NJ 08854-1331 possessions; it is the ratio of the signal generated by a critical
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