VEGASOURCE 81 Emitter Loading and Exchange Instruction Manual

VEGASOURCE 81 Emitter Loading and Exchange

Product Information

• The VEGASOURCE 81, 82, and 83 are source containers used for loading and exchanging radioactive sources. These supplementary instructions provide guidance on how to safely perform the loading and exchanging process. It is important to read and understand these instructions along with the operating instructions of the source container before carrying out any work.
• The source capsule should be checked to ensure it fits the loading pipe of the source container. The data on the shipping papers of the source capsule should be compared with the data of the source container for compatibility.
• There are different versions of source capsules available, each with its own specifications and applications. The versions include A1, A3, J1, L1, C1, G1, and X38. These source capsules have various uses depending on their version.
• When working with radioactive sources, it is essential that only authorized and qualified personnel, who are monitored for radiation exposure, handle them according to local legislation or handling permits. All safety precautions and conditions at the site must be taken into account.
• Before starting the work, gather all necessary tools and accessories to ensure efficient completion. It is also important to follow proper procedures for handling and exchanging the source capsule.
• During the loading or exchanging process, it is recommended to keep a distance of at least 10 cm (4 inches) from the source container to the dosimetry or radiation monitoring device. This helps minimize radiation exposure.
• The type labels of the source must be permanently lettered and comply with specific requirements. For sources with high activity levels, such as Cs-137 with an activity of 20 GBq (540 mCi) or higher, the warning “Highly radioactive source” must be stated on the type label.

Product Usage Instructions

1. Read and understand the supplementary instructions as well as the operating instructions of the source container.
2. Check if the source capsule fits the loading pipe of the source container and compare their data for compatibility.
3. Ensure that only authorized and qualified personnel, who are monitored for radiation exposure, handle the radioactive sources.
4. Gather all required tools and accessories before starting the work.
5. Maintain a distance of at least 10 cm (4 inches) from the source container to the dosimetry or radiation monitoring device during the loading or exchanging process.
6. Follow proper procedures for handling and exchanging the source capsule, ensuring safety measures are in place to protect yourself and others.
7. Permanently letter the type labels of the source capsules according to the provided specifications.
8. If working with highly radioactive sources, such as Cs-137 with an activity of 20 GBq (540 mCi) or higher, include the warning “Highly radioactive source” on the type label.

Radiation protection

Safety instructions

• These supplementary instructions describe the loading and exchanging of the source for source containers VEGASOURCE 81, 82 and 83.
• Carefully read this supplementary instructions and the corresponding operating instructions of the source container and carry out the work only after you have completely understood all instructions.
• It is absolutely necessary that you take note of all safety instruments, particularly of the instructions concerning radiation safety.
• Check if the source capsule fits the existing loading pipe of the source container. Compare the data in the shipping papers of the source capsule with the data of the source container.

• A1 Capsule VZ-79-001 (Cs-137), nipple d = 6.4 x 16 mm
• A3 Capsule VZ-79-002 (Cs-137), nipple d = 6.4 x 16 mm/1350 °C J1 Capsule IGI-Z-3, cylinder d = 6 x 10 mm
• L1 Capsule IGI-Z-4, cylinder d = 8 x 12 mm
• C1 Capsule VZ-357-001 (Cs-137), nipple d = 8 x 19 mm
• G1 Capsule X38
• G1 Capsule 9084

Tab. 1: Possible applications of the source capsules

Safety instructions

• All maintenance work such as dismounting or exchanging the radioactive source must only be carried out by authorized, quali-fied personnel monitored for radiation exposure according to the local legislation or the handling permit. Take note of the specifica-tions of the present handling permit. All conditions on site must be taken into account.
• All work must only be carried out from a protected location (shield-ing). Avoid risk to other persons through suitable measures (e.g. safety fence, etc.).
• Make all necessary preparations for exchanging the source to ensure that the work is carried out as fast as possible. Get all required tools and accessories ready before you start work.
• Before starting the work, get a suitable, shielded vessel ready for holding the exchanged source capsule.
• Observe all the instructions of this supplementary instructons manual for source exchange
• Never touch the source capsule directly, but use a suitable grip-ping device. Keep a distance of at least 10 cm (4 in).
• Check all O-rings and seals when exchanging the source and replace them, if necessary.
• Check the function of the switching facility of the source container before installing or exchanging a source capsule (ON/OFF-switch-ing).
• When system inspections are carried out, always set the source container to position OFF and secure this position with a lock against inadvertent switching on.
• If possible, practise the procedure beforehand, especially the handling of the gripping tool.
• Scope of delivery : Unmarked type label ” Source”, stainless steel 4 grooved pins
• Labelling: When loading a source container or exchanging a source, the corre-sponding type labels of the source must be permanently lettered, e.g. with punch-type letters.
  • With sources exceeding a certain level of activity, the warning “Highly radioactive source” must be stated on the type label.
  • This is the case with Cs-137 with an activity ≥ 20 GBq (540 mCi).

1. Warning – Radioactivity
2. Source: Cs-137
3. Activity of the source in MBq or GBq
4. Country of origin of the source
5. Loading date of the sources (MM/YYYY)
6. Serial number of the source capsule (for traceability of the source)

Preparation

• Make sure that the necessary accessories and tools are available and in technically perfect condition.
• Keep the source capsule (on site) well shielded in the transport packaging.
• Ensure that the number combination for the padlock on the source holder is available.
• Load the source container or exchange the source capsule with utmost care.
• Use a suitable gripping device e.g. a long pair of pliers when inserting or exchanging the source capsule.

Note:

• When replacing, you will need a suitable, shielded container to store the old source capsule.
• Contact our specialists before carrying out such work.

Loading or source exchange

• Required tools

Version X, C
You need the following tools when exchanging the source capsule on version X:

• Number combination for padlock
• Allen spanner (Torx TR30) with inner hole
• Flat-headed screwdriver, size 1.5 x 10
• Gripping tool for source capsule

Remove protective cap
Remove optional protective cap.

Remove loading pipe

1. Internal hexagon head round screw (Torx TR30) with internal pin
2. Loading pipe
3. Source holder
4. Padlock

Remove padlock (4)

• Make sure that the source holder is in position ” OFF”.
• Mark with a felt-tip pen so that the correct position of the loading pipe can be quickly and clearly seen when it is reinserted.
• Unscrew the internal hexagon head round screws (Torx TR) with the internal pin (1) using a suitable screwdriver, size TR30.
• Pull out the loading pipe (2) upwards

Insert or exchange source

1. Slot screwdriver
2. Access groove
3. Source capsule
4. Cover plate (swivelling)
5. Loading pipe

Insert loading pipe

• Swivel the cover (4) in front on the cylinder of the loading pipe (5) to the side. To do this, lift the cover (8) slightly with a small slotted screwdriver
• Insert a small slotted screwdriver (1) into the side of the access groove (2) and push the source capsule (3) out to the front and drop it into a shielded container. Make sure that the capsule does not fall out in an uncontrolled manner.
• Insert the new source capsule (3) from the front side and press it in completely. Use a suitable gripping tool for insertion. Press the source capsule into the loading pipe (5) on a firm surface.
• Swivel the cover plate (4) back in front of the loading pipe (5) using a screwdriver.
• Push the loading pipe (5) all the way into the source holder. Pay attention to the correct position (marking).
• Screw in and tighten the internal hexagon head round screws (Torx TR) with the internal pin (5) using a suitable screwdriver, size 30.
• Fit the padlock and lock
• Secure the source holder with a new seal

Attach or replace the type labels

• Remove existing type labels (when exchanging the source)
• Unpack the type label (55 x 45 mm) and label it according to your preparation capsule. For more information, see chapter ” Safety instructions – Labelling”

1. Type label – Source holder
2. Type label – Source (replace)
3. Position indication OFF
4. Position indication ON

• Press the type label onto the intended surface of the source holder and bend it slightly into shape.
• Attach the type label to the source holder with four notched nails.
• Attach the adhesive label ” Radioactive” to the source container (if not already present)
• Insertion or exchange of the source is finished

Put on protective cap

1. Put on the protective cap (optional). Turn the protective cap 180° if it does not fit correctly.
2. Turn the protective cap clockwise until the straps are below the fastening screws.
3. Tighten the fixing screws manually

1. Put on protective cap
2. Turn the straps of the protective cap under the fastening screws 2 Tighten fixing screws

Supplement

Technical data
Source
Take note of the specifications in the operating instructions of the source container VEGASOURCE.

Half-value layers

| VEGASOURCE 81| VEGASOURCE 82| VEGASOURCE 83
---|---|---|---
Source| Cs-137| Cs-137| Cs-137
Number of the half-val- ue layers| 4.9| 8.6| 11.5

Tab. 2 : Half-value layers of the source

Activity of the source

mCi)

Tab. 3 : Max. activity of the source
Product-related fluctuations of the source activity and tolerances of the measuring instruments are not taken into account for the above data.

Trademark
All the brands as well as trade and company names used are property of their lawful proprietor/originator.

• All statements concerning scope of delivery, application, practical use and operating conditions of the sensors and processing systems correspond to the information available at the time of printing.
• Subject to change without prior notice
• © VEGA Grieshaber KG, Schiltach/Germany 2022

VEGA Grieshaber KG Am Hohenstein 113 77761 Schiltach Germany

Phone +49 7836 50-0
E-mail: info.de@vega.com www.vega.com

References

• VEGA - Level - Switching - Pressure

Read User Manual Online (PDF format)

Read User Manual Online (PDF format)  >>

Download This Manual (PDF format)

Download this manual  >>