ASTM C1187-07
(Guide)Standard Guide for Establishing Surveillance Test Program for Boron-Based Neutron Absorbing Material Systems for Use in Nuclear Spent Fuel Storage Racks
Standard Guide for Establishing Surveillance Test Program for Boron-Based Neutron Absorbing Material Systems for Use in Nuclear Spent Fuel Storage Racks
SIGNIFICANCE AND USE
The storage of nuclear fuel in high-density storage racks is dependent upon the presence and performance of an absorber between the stored fuel assemblies to ensure that the reactivity of the storage configuration does not exceed the K-effective allowed by applicable regulations. A confirmation test may be required to verify the presence and performance of the absorber within the racks. When the absorbers are not visible or accessible for inspection (such as being fixed within the walls of the structure surrounding the storage position in the rack) a surveillance test program may be conducted on representative specimens of the absorber that are accessible and exposed to the same environmental factors as those in the rack.
This guide provides guidance for establishing and conducting a surveillance program for monitoring the ongoing performance of the absorbers.
SCOPE
1.1 This guide provides guidance for establishing a surveillance test program to monitor the performance of boron-based neutron absorbing material systems (absorbers) necessary to maintain sub-criticality in nuclear spent fuel storage racks in a pool environment. The practices presented in this guide, when implemented, will provide a comprehensive surveillance test program to verify the presence of sufficient neutron absorbing material within the storage racks. The performance of a surveillance test program provides added assurance of the safe and effective operation of a high-density storage facility for nuclear spent fuel.
1.2 This standard does not purport to address all of the safety problems, 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.
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Standards Content (Sample)
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Designation: C1187 − 07
StandardGuide for
Establishing Surveillance Test Program for Boron-Based
Neutron Absorbing Material Systems for Use in Nuclear
1
Spent Fuel Storage Racks
This standard is issued under the fixed designation C1187; 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.
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1. Scope Cracking (Withdrawn 2007)
D813 TestMethodforRubberDeterioration—CrackGrowth
1.1 This guide provides guidance for establishing a surveil-
D1415 Test Method for Rubber Property—International
lance test program to monitor the performance of boron-based
Hardness
neutron absorbing material systems (absorbers) necessary to
D2240 Test Method for Rubber Property—Durometer Hard-
maintain sub-criticality in nuclear spent fuel storage racks in a
ness
pool environment. The practices presented in this guide, when
D3183 Practice for Rubber—Preparation of Pieces for Test
implemented, will provide a comprehensive surveillance test
Purposes from Products
program to verify the presence of sufficient neutron absorbing
D4483 Practice for Evaluating Precision for Test Method
material within the storage racks. The performance of a
Standards in the Rubber and Carbon Black Manufacturing
surveillance test program provides added assurance of the safe
Industries
and effective operation of a high-density storage facility for
E6 Terminology Relating to Methods of Mechanical Testing
nuclear spent fuel.
E8 Test Methods for Tension Testing of Metallic Materials
1.2 This standard does not purport to address all of the
E23 Test Methods for Notched Bar Impact Testing of Me-
safety problems, if any, associated with its use. It is the
tallic Materials
responsibility of the user of this standard to establish appro-
E74 Practice of Calibration of Force-Measuring Instruments
priate safety and health practices and determine the applica-
for Verifying the Force Indication of Testing Machines
bility of regulatory limitations prior to use.
E290 Test Methods for Bend Testing of Material for Ductil-
ity
2. Referenced Documents
G1 Practice for Preparing, Cleaning, and Evaluating Corro-
2
2.1 ASTM Standards:
sion Test Specimens
C992 Specification for Boron-Based Neutron Absorbing
G4 Guide for Conducting Corrosion Tests in Field Applica-
Material Systems for Use in Nuclear Spent Fuel Storage
tions
Racks
G15 Terminology Relating to Corrosion and Corrosion Test-
C1068 Guide for Qualification of Measurement Methods by
3
ing (Withdrawn 2010)
a Laboratory Within the Nuclear Industry
G16 Guide for Applying Statistics to Analysis of Corrosion
D412 Test Methods forVulcanized Rubber andThermoplas-
Data
tic Elastomers—Tension
G46 Guide for Examination and Evaluation of Pitting Cor-
D430 Test Methods for Rubber Deterioration—Dynamic
rosion
Fatigue
G69 Test Method for Measurement of Corrosion Potentials
D518 Test Method for Rubber Deterioration—Surface
of Aluminum Alloys
3. Terminology
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This guide is under the jurisdiction ofASTM Committee C26 on Nuclear Fuel
3.1 Definitions of Terms Specific to This Standard:
Cycle and is the direct responsibility of Subcommittee C26.03 on NeutronAbsorber
Materials Specifications.
3.1.1 absorber—a boron-based neutron-absorbing material
Current edition approved July 1, 2007. Published August 2007. Originally
system.
approved in 1991. Last previous edition approved in 1999 as C1187 – 91 (1999).
DOI: 10.1520/C1187-07.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on The last approved version of this historical standard is referenced on
the ASTM website. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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C1187 − 07
3.1.2 confirmation tests—tests that may be necessary to to continuously and effectively remove thermal neutrons. This
confirm the continued presence and integrity of the neutron characteristic may vary over time after exposure to the heat,
absorber. radiation, water chemistry, and mechanical forces experienced
by the racks from the storage of nuclear fuel.
3.1.3 high-density storage—the close-packing of spent fuel
5.1.1 The metal-based absorbers may be monitored for
to the extent that absorbers are required for neutron flux
verification of adequate neutron absorbing capability by peri-
reduction to assure adequate sub-criticality margin.
odic neutron attenuation tests or neutron blackness tests, or
3.1.4 irradiation (flux
...
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