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The Register of Regulated Qualifications

View Unit : Carrying Out Radiographic Testing Activities

Unit
Unit Reference Number
Y/600/5685
Qualification Framework
QCF
Title
Carrying Out Radiographic Testing Activities
Unit Level
Level 3
Unit Sub Level
None
Guided Learning Hours
189
Unit Credit Value
82
Date of Withdrawal
SSAs
4.1 Engineering
Unit Grading Structure
Pass
Assessment Guidance

This unit must be assessed in a work environment and must be assessed in accordance with the ‘Common Requirements for National Vocational Qualifications (NVQ) in the QCF’ which can be downloaded from Semta’s website:

http://www.semta.org.uk/training_providers__awarding/national_occupational_standard/qca_assessment_requirements.aspx

Additional assessment requirements have been published by Semta. These additional assessment requirements are set down in Semta’s Engineering Technical Support Level 3 unit assessment strategy which can be downloaded from Semta’s website: http://www.semta.org.uk/training_providers__awarding/national_occupational_standard/qca_assessment_requirements.aspx

Learning Outcomes and Assessment Criteria
Learning Outcome - The learner will:Assessment Criterion - The learner can:
1

1a. Carry out radiographic testing activities

1.1

Work safely at all times, complying with health and safety and other relevant regulations and guidelines

1.2

Prepare for the radiographic testing, to include carrying out all of the following:

• checking that all features of the Controlled Test Zone are in place and operating correctly (such as barriers, lights, signs, radiation survey meters)

• ensuring that the product test areas are correctly prepared and identified

• checking that all equipment and consumables are as specified and fit for purpose

• removing gamma ray source containers from the approved store and recording in the Source Movement Register

1.3

Follow the appropriate procedures for use of tools and equipment to carry out the required tests

1.4

Set up and carry out the tests using the correct procedures and within agreed timescales

1.5

Carry out all of the following during the radiographic testing activities:

• use appropriate personal protective equipment

• comply with Ionising Radiation Regulations, local rules, instructions issued by the Radiation Protection Supervisor, relevant COSHH sheets and risk assessment documentation

• follow the defined radiographic testing procedures, and apply safe working practices and procedures at all times

• leave the work area in a safe condition on completion of the activities

1.6

Set up the radiographic testing equipment to provide all of the following:

• correct source location, source focal distance (SFD) and beam orientation

• specified exposure parameters

• specified radiographic film and intensifying screens applied to the test areas

• correctly located image quality indicators (IQIs) and identification markers

1.7

Carry out radiographic exposures on the engineering products, to include carrying out all of the following:

• activating exposure warning devices

• monitoring the radiation survey meters

• storing the exposed film in the designated safe place

1.8

Carry out radiographic testing on one of the following:

• welded joints

• castings

• wrought products/materials (such as forged, rolled, extruded)

• cold formed products (such as by bending, pressing, rolling)

• heat treated components

• structures (such as airframes, lifting beams, pressure vessels)

• other specific products

2

1b. Carry out radiographic testing activities (continued)

2.1

Process the exposed films in the prepared facility, according to manufacturer’s instructions, to include carrying out all of the following:

• using the correct personal protective equipment

• preparing the correct processing chemicals

• carrying out the processing requirements, in the correct sequence and for the correct time

• viewing the image under suitable lighting conditions

• storing processed film in a safe place

• disposing of used materials, in line with organisation and environmental safe practice

2.2

Record the results of the tests in the appropriate format

2.3

Complete a NDT report, to include recording all of the following:

• product identification

• test areas covered by identified radiographs

• test area geometries and thickness

• radiographic parameters

• testing conditions

• type of image quality indication (IQI)

• film type

• processing conditions

• personal data

2.4

Complete the radiographic testing activities, by carrying out all of the following:

• closing down the equipment to a safe condition

• returning gamma radiation source containers to the approved store

• recording actions in the source movement register

• removing warning notices and barriers, and reinstating the work area

2.5

Review the results and carry out further tests if necessary

2.6

Check the quality of the developed image for all of the following features:

• processing faults

• image quality

• contrast

• sensitivity

• density

2.7

Deal promptly and effectively with problems within their control and report those that cannot be solved

3

2a. Know how to carry out radiographic testing activities

3.1

Describe the specific safety precautions to be taken when carrying out radiographic testing activities on engineering products, materials or structures

3.2

Describe the hazards associated with radiographic testing activities (such as electrical contact, moving mechanical parts, radiation, toxic chemicals), and how they can be minimised

3.3

Describe the regulations and codes of practice to be followed when using radiographic testing equipment (such as Ionising Radiation Regulations; COSHH Regulations; local rules; the role of the Radiation Protection Supervisor; the use of the Radioactive Source Movement Register)

3.4

Describe the type(s) of personal protective equipment (PPE) to be used, and how to obtain it (such as protective clothing, personal dosimeters, radiation survey meters, barriers and screens, warning signals, visual indicators and alarm systems)

3.5

Describe the procedures to be adopted in the case of accident and emergency/incidents involving radioactive sources

3.6

Explain how to check the Controlled Test Zone complies with regulation requirements (such as the identification and marking of boundary exclusion zones, the erection of physical barriers, warning lights and visual signs to restrict unauthorised entrance, the sighting of radiation survey meters, the positioning of appropriate radiation screens)

3.7

Describe the basic principles of radiographic testing (including the use of X- and gamma radiation as a penetrating agent; shadow effect and projection and the capture of the image on photographic type film; development, fixing, washing and drying of the film, and equipment used to view the exposed images)

3.8

Describe the sources of radiation used in radiographic testing activities (to include the X-ray tube (generator) and the use of radioactive isotopes)

3.9

Describe the image formation (including rectilinear propagation; the geometry of shadow projection, inverse square law, focal spot, formation of penumbra and image quality indicators)

3.10

Describe the preparation requirements of the X-ray tube generator, and how to set up the tube or radiation source (including equipment controls, establishment of testing parameters; focal spot size and safety devices; the use of exposure charts)

4

2b. Know how to carry out radiographic testing activities (continued)

4.1

Describe the care and control of the equipment (to include checking the condition of all electrical cables and connections, all mechanical functions and safety devices)

4.2

Describe the care of gamma-ray source containers, and storage procedures for radioactive sources

4.3

Explain how to transport radioactive materials safely and correctly, and the safe storage of the radioactive source containers

4.4

Explain how to prepare the products, materials or structures for the radiographic testing activities (including the identification of the test area and the use of lead markers)

4.5

Describe the types and selection of radiographic films (including emulsion types; intensifying screens; film development, fixing, washing and drying; the significance of temperature on the film and how it is controlled)

4.6

Describe the processing faults, characteristic curves, and the effect of development conditions on the finished film quality

4.7

Describe the radiographic image quality (to include sensitivity, density, contrast and definition, and the effect of scattered radiation on the image)

4.8

Describe the response of defects to penetrative radiation, and the resulting images on the film

4.9

Describe the setting up/maintenance of storage facilities for unexposed film, exposed film and film which has been developed

4.10

Describe the extent of their own responsibility and to whom they should report if they have any problems that they cannot resolve

Equivalent Units
There are no equivalences to display.
2.1.3.0L