ASTM C1269-97(2003)

Standard Practice for Adjusting the Operational Sensitivity Setting of In-Plant Walk-Through Metal Detectors

SIGNIFICANCE AND USE
Performing this procedure from this practice should result in a properly adjusted walk-through metal detector operating at or near the optimum sensitivity setting for the environment in which it is installed.  
This practice determines the lowest sensitivity setting required to detect a specified test object and establishes a sensitivity setting suitable for most operational needs.
This practice may be used to establish an initial sensitivity setting for follow-on procedures that determine credible values for probability of detection and confidence level, as required by regulatory authorities.
SCOPE
1.1 This practice covers a procedure for adjusting the operational sensitivity of in-plant walk-through metal detectors. Performance of this procedure should result with in-plant walk-through metal detectors being adjusted to an initial operational sensitivity setting suitable for performance testing.
1.2 This practice does not set test object specifications or specify specific test objects. These should be specified by the regulatory authority.
1.3 This practice uses information developed by Practice C1270, or an equivalent procedure, which identifies the critical test object (from a specified set of test objects), its critical orientation, and the critical test path through the detection zone. In the case of Practice C1270, the information is found on the detection sensitivity map(s) for each in-plant walk-through metal detector.
1.4 This practice is one of several developed to assist operators of nuclear facilities with meeting the metal detection performance requirements of the regulatory authorities (see Appendix).
1.5 This standard practice is neither intended to set performance levels nor limit or constrain technologies.
1.6 This practice does not address safety or operational issues associated with the use of walk-through metal detectors.
1.7 The values stated in SI units are to be regarded as standards. The values given in parentheses are for information only.

General Information

• Status: Historical
• Publication Date: 09-Dec-1997
• ICS: 03.080.30 - Services for consumers
• ICS: 13.320 - Alarm and warning systems
• Technical Committee: C26 - Nuclear Fuel Cycle

Relations

• Replaces: ASTM C1269-97 - Standard Practice for Adjusting the Operational Sensitivity Setting of In-Plant Walk-Through Metal Detectors
• Effective Date: 10-Dec-1997
• Referred By: ASTM C1270-97(2021) - Standard Practice for Detection Sensitivity Mapping of In-Plant Walk-Through<brk /> Metal Detectors
• Effective Date: 10-Dec-1997

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:C1269–97(Reapproved2003)
Standard Practice for
Adjusting the Operational Sensitivity Setting of In-Plant
1
Walk-Through Metal Detectors
This standard is issued under the fixed designation C1269; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
Nuclear regulatory authorities require personnel entering designated security areas to be screened
for concealed weapons. Additionally, in security areas containing specified quantities of special
nuclear materials, personnel exiting the facility are required to be screened for metallic nuclear
shielding material. Walk-through metal detectors are widely used to implement these requirements.
Nuclear regulatory authorities usually specify an assortment of metal detector test objects that must
all be detected by walk-through metal detectors. This practice provides a procedure for adjusting the
operational sensitivity setting to the lowest setting necessary to detect the least likely to-be-detected
test object in its least likely to-be-detected orientation while passing through the detection zone in the
weakest known detection path. All other test objects will then be detected at this sensitivity setting
anywhere in the detection zone.
1. Scope 1.7 The values stated in SI units are to be regarded as
standards. The values given in parentheses are for information
1.1 This practice covers a procedure for adjusting the
only.
operational sensitivity of in-plant walk-through metal detec-
tors. Performance of this procedure should result with in-plant
2. Referenced Documents
walk-through metal detectors being adjusted to an initial
2
2.1 ASTM Standards:
operational sensitivity setting suitable for performance testing.
C1238 Guide for Installation of Walk-Through Metal De-
1.2 This practice does not set test object specifications or
tectors
specify specific test objects. These should be specified by the
C1270 Practice for Detection Sensitivity Mapping of In-
regulatory authority.
Plant Walk-Through Metal Detectors
1.3 This practice uses information developed by Practice
C1309 Practice for Performance Evaluation of In-Plant
C1270, or an equivalent procedure, which identifies the critical
Walk-Through Metal Detectors
test object (from a specified set of test objects), its critical
F1468 Practice for Evaluation of Metallic Weapons Detec-
orientation, and the critical test path through the detection
tors for Controlled Access Search and Screening
zone. In the case of Practice C1270, the information is found
on the detection sensitivity map(s) for each in-plant walk-
3. Terminology
through metal detector.
3.1 Definitions of Terms Specific to This Standard:
1.4 This practice is one of several developed to assist
3.1.1 clean-tester, n—a person who does not carry any
operators of nuclear facilities with meeting the metal detection
extraneous metallic objects that would significantly alter the
performance requirements of the regulatory authorities (see
signal produced when the person carries a test object.
Appendix).
3.1.1.1 Discussion—Smaller test objects require more com-
1.5 This standard practice is neither intended to set perfor-
plete elimination of metallic objects. By example but not
mance levels nor limit or constrain technologies.
limitation, such extraneous metallic objects may include:
1.6 This practice does not address safety or operational
metallicbeltbuckles,metalbuttons,cardiacpacemakers,coins,
issues associated with the use of walk-through metal detectors.
metal frame eyeglasses, hearing aids, jewelry, keys, mechani-
cal pens and pencils, shoes with metal shanks or arch supports,
1
This practice is under the jurisdiction of ASTM Committee C26 on Nuclear
Fuel Cycle and is the direct responsibility of Subcommittee C26.12 on Safeguard
2
Applications. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Feb. 10, 2003. Published February 2003. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 1994. Last previous edition approved in 1997 as C1269 – 97. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/C1269-97R03. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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C1269–97 (2003)
metallic surgical implants, undergarment support metal, metal
zippers, etc. In the absence of other criteria, a clean tester
passing through a metal detector shall not cause a disturbance
signal greater th
...