GB2127562A - Load test apparatus - Google Patents

Load test apparatus Download PDF

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Publication number
GB2127562A
GB2127562A GB08324904A GB8324904A GB2127562A GB 2127562 A GB2127562 A GB 2127562A GB 08324904 A GB08324904 A GB 08324904A GB 8324904 A GB8324904 A GB 8324904A GB 2127562 A GB2127562 A GB 2127562A
Authority
GB
United Kingdom
Prior art keywords
flask
trunnions
testing
nuclear fuel
load
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB08324904A
Other versions
GB8324904D0 (en
GB2127562B (en
Inventor
Peter Charles Guilfoyle
Roy Randle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British Nuclear Fuels Ltd
Original Assignee
British Nuclear Fuels Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by British Nuclear Fuels Ltd filed Critical British Nuclear Fuels Ltd
Priority to GB08324904A priority Critical patent/GB2127562B/en
Publication of GB8324904D0 publication Critical patent/GB8324904D0/en
Publication of GB2127562A publication Critical patent/GB2127562A/en
Application granted granted Critical
Publication of GB2127562B publication Critical patent/GB2127562B/en
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
    • G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00—Subject matter not provided for in other groups of this subclass
    • G01M99/007—Subject matter not provided for in other groups of this subclass by applying a load, e.g. for resistance or wear testing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F5/00—Transportable or portable shielded containers

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)

Abstract

Apparatus for testing the load carrying capabilities of members, in particular trunnions 2 on nuclear fuel transport flasks 1 comprises a saddle 4 dimensioned to sit on a flask and supporting two hydraulic jacks 5 which exert controlled loads on a beam 7 spanning the flask and having depending side arms 8 engaging the trunnions by eyes 10. <IMAGE>

Description

SPECIFICATION Load test apparatus The present invention concerns an apparatus for testing members which are subjected to loads.
In particular the apparatus concerns an apparatus for testing the loads which can be applied to trunnions on flasks for the transport of irradiated nuclear fuel elements. It is desirable to test the trunnions before a flask enters into service to ensure that the trunnions are securely anchored to the flask and will not break away during use with possible disastrous consequences.
According to the present invention a load test apparatus comprises hydraulic jack means operable to exert controlled loads on a beam, the beam being releasably attachable to members under test.
For testing trunnions on a fuel flask the hydraulic jack means are conveniently mounted on a saddle to sit upon the flask. The jack means cooperate with a loading arm which spans the flask and has depending side arms which engage the trunnions.
The invention will be described further, by way of example, with reference to the accompanying drawings, in which: Figure 1 shows an apparatus for testing trunnions on a nuclear fuel flask; Figure 2 is a schematic circuit diagram of the apparatus.
A flask for the transport of irradiated nuclear fuel elements comprises a cylindrical body 1 having spaced apart cooling fins 2 and pairs of lifting trunnions 3. The trunnions 3 are fixedly anchored to the body 1.
It is desirable to test the load that can be applied to the trunnions before the flask enters into service to receive irradiated nuclear fuel elements.
The testing apparatus in Figure 1 comprises a saddle 4 to sit on the cooling fins 2 and carrying two hydraulic jacks 5. The jacks 5 cooperate with respective locating rings 6 on a load beam 7. A side arm 8 depends from each end of the beam 7.
Each side arm 8 terminates in an eye 10 to engage the respective trunnion 3 on the flask.
In use, with the apparatus located in position on the flask as shown in Figure 1, the jacks are actuated simultaneously to apply a known load on the trunnions. Figure 2 is an example of a circuit for hydraulic jacks 5. The jacks 5 can apply loads to the trunnions in excess of the maximum likely to be encountered during use of the flask. The saddle can be adapted to fit flasks of different diameters by means of removable inserts or adaptors having appropriate radii of curvature.
An hydraulic hand pump 12 can be employed to actuate the jacks.
The working pressure is indicated on gauge 11.
A facility 13 for calibration of the gauge 11 can be provided by means of a T-connection adjacent to the hand pump. A back-up facility is desirable in the event of mal-functioning of the gauge 11.
Thus, for example, a strain gauge can be provided on each side arm. Alternatively, discs or pads of a crushable material can be arranged between the jacks and the load beam, such discs or pads being crushed or deformed when the applied load exceeds a certain maximum.
Claims
1. A load test apparatus comprising hydraulic jack means operable to exert controlled loads on a beam, the beam being releasably attachable to members under test.
2. An apparatus as claimed in claim 1 in which the members comprise trunnions on a nuclear fuel flask.
3. An apparatus as claimed in claim 2 in which the hydraulic jack means are mounted on a saddle dimensions to sit upon the flask.
4. An apparatus as claimed in claim 3 in which the beam spans the flask and has depending side arms to engage the trunnions.
5. An apparatus for testing trunnions on nuclear fuel flasks substantially as herein described with reference to and as illustrated in the accompanying drawings.
New claims or amendments to claims filed on 9th December 1 983.
Superseded claims 1 to 5 New or amended claims: 1. A load test apparatus for testing trunnions on a nuclear fuel flask comprising a saddle dimensioned to sit upon the flask carrying jacking means operable to exert controlled loads on a beam spanning the flask, the beam having depending arms releasably attachable to the trunnions.
2. A load test apparatus for testing trunnions on a nuclear fuel flask substantially as herein described with reference to and as illustrated in the accompanying drawings.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (2)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Load test apparatus The present invention concerns an apparatus for testing members which are subjected to loads. In particular the apparatus concerns an apparatus for testing the loads which can be applied to trunnions on flasks for the transport of irradiated nuclear fuel elements. It is desirable to test the trunnions before a flask enters into service to ensure that the trunnions are securely anchored to the flask and will not break away during use with possible disastrous consequences. According to the present invention a load test apparatus comprises hydraulic jack means operable to exert controlled loads on a beam, the beam being releasably attachable to members under test. For testing trunnions on a fuel flask the hydraulic jack means are conveniently mounted on a saddle to sit upon the flask. The jack means cooperate with a loading arm which spans the flask and has depending side arms which engage the trunnions. The invention will be described further, by way of example, with reference to the accompanying drawings, in which: Figure 1 shows an apparatus for testing trunnions on a nuclear fuel flask; Figure 2 is a schematic circuit diagram of the apparatus. A flask for the transport of irradiated nuclear fuel elements comprises a cylindrical body 1 having spaced apart cooling fins 2 and pairs of lifting trunnions 3. The trunnions 3 are fixedly anchored to the body 1. It is desirable to test the load that can be applied to the trunnions before the flask enters into service to receive irradiated nuclear fuel elements. The testing apparatus in Figure 1 comprises a saddle 4 to sit on the cooling fins 2 and carrying two hydraulic jacks 5. The jacks 5 cooperate with respective locating rings 6 on a load beam 7. A side arm 8 depends from each end of the beam 7. Each side arm 8 terminates in an eye 10 to engage the respective trunnion 3 on the flask. In use, with the apparatus located in position on the flask as shown in Figure 1, the jacks are actuated simultaneously to apply a known load on the trunnions. Figure 2 is an example of a circuit for hydraulic jacks 5. The jacks 5 can apply loads to the trunnions in excess of the maximum likely to be encountered during use of the flask. The saddle can be adapted to fit flasks of different diameters by means of removable inserts or adaptors having appropriate radii of curvature. An hydraulic hand pump 12 can be employed to actuate the jacks. The working pressure is indicated on gauge 11. A facility 13 for calibration of the gauge 11 can be provided by means of a T-connection adjacent to the hand pump. A back-up facility is desirable in the event of mal-functioning of the gauge 11. Thus, for example, a strain gauge can be provided on each side arm. Alternatively, discs or pads of a crushable material can be arranged between the jacks and the load beam, such discs or pads being crushed or deformed when the applied load exceeds a certain maximum. Claims
1. A load test apparatus comprising hydraulic jack means operable to exert controlled loads on a beam, the beam being releasably attachable to members under test.
2. A load test apparatus for testing trunnions on a nuclear fuel flask substantially as herein described with reference to and as illustrated in the accompanying drawings.
2. An apparatus as claimed in claim 1 in which the members comprise trunnions on a nuclear fuel flask.
3. An apparatus as claimed in claim 2 in which the hydraulic jack means are mounted on a saddle dimensions to sit upon the flask.
4. An apparatus as claimed in claim 3 in which the beam spans the flask and has depending side arms to engage the trunnions.
5. An apparatus for testing trunnions on nuclear fuel flasks substantially as herein described with reference to and as illustrated in the accompanying drawings.
New claims or amendments to claims filed on 9th December 1 983.
Superseded claims 1 to 5 New or amended claims:
1. A load test apparatus for testing trunnions on a nuclear fuel flask comprising a saddle dimensioned to sit upon the flask carrying jacking means operable to exert controlled loads on a beam spanning the flask, the beam having depending arms releasably attachable to the trunnions.
GB08324904A 1982-09-23 1983-09-16 Load test apparatus Expired GB2127562B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08324904A GB2127562B (en) 1982-09-23 1983-09-16 Load test apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8227225 1982-09-23
GB08324904A GB2127562B (en) 1982-09-23 1983-09-16 Load test apparatus

Publications (3)

Publication Number Publication Date
GB8324904D0 GB8324904D0 (en) 1983-11-09
GB2127562A true GB2127562A (en) 1984-04-11
GB2127562B GB2127562B (en) 1986-01-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB08324904A Expired GB2127562B (en) 1982-09-23 1983-09-16 Load test apparatus

Country Status (1)

Country Link
GB (1) GB2127562B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104655438A (en) * 2014-12-17 2015-05-27 中广核核电运营有限公司 Detection system and detection method for nuclear fuel loading, unloading and storage system
US11879872B2 (en) 2022-04-29 2024-01-23 Institute Of Rock And Soil Mechanics, Chinese Academy Of Sciences Deformation and control simulation test system for tunnel engineering supporting structure

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB537933A (en) * 1940-03-01 1941-07-14 Avery Ltd W & T Improvements in hydraulic testing machines
GB690204A (en) * 1951-06-05 1953-04-15 George William Stockton Apparatus for use in determining the characteristics of coated metal sheets
GB1264752A (en) * 1970-02-07 1972-02-23
GB2018438A (en) * 1978-03-16 1979-10-17 Johansson K E Device for carrying out loading tests of containers
GB2091888A (en) * 1980-12-18 1982-08-04 Gilmat Engineering Ltd A testing unit for crash barriers
GB2104185A (en) * 1981-07-02 1983-03-02 Twyford Moors Apparatus for testing shock absorbers

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB537933A (en) * 1940-03-01 1941-07-14 Avery Ltd W & T Improvements in hydraulic testing machines
GB690204A (en) * 1951-06-05 1953-04-15 George William Stockton Apparatus for use in determining the characteristics of coated metal sheets
GB1264752A (en) * 1970-02-07 1972-02-23
GB2018438A (en) * 1978-03-16 1979-10-17 Johansson K E Device for carrying out loading tests of containers
GB2091888A (en) * 1980-12-18 1982-08-04 Gilmat Engineering Ltd A testing unit for crash barriers
GB2104185A (en) * 1981-07-02 1983-03-02 Twyford Moors Apparatus for testing shock absorbers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104655438A (en) * 2014-12-17 2015-05-27 中广核核电运营有限公司 Detection system and detection method for nuclear fuel loading, unloading and storage system
CN104655438B (en) * 2014-12-17 2017-08-29 中广核核电运营有限公司 Nuclear fuel loads and unloads the detecting system and method for storage system
US11879872B2 (en) 2022-04-29 2024-01-23 Institute Of Rock And Soil Mechanics, Chinese Academy Of Sciences Deformation and control simulation test system for tunnel engineering supporting structure

Also Published As

Publication number Publication date
GB8324904D0 (en) 1983-11-09
GB2127562B (en) 1986-01-15

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Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20000916