Source container FQG60

Summary

Product identification

• Product Name: Source container FQG60
• Product Type: Radiometric Level Measurement
• Description: Container with radiation source insert with manual switch-on and switch-off.

Application

The FQG60 source container is used for radiometric level limit measurement, level measurement, and density measurement.

• Suitable for: ¹³⁷Cs up to 1.11 GBq (30 mCi).
  • For larger activities, FQG61, FQG62, or FQG66 devices are available.
• Density Measurement: Suitable for pipe outer diameters ranging from 48 to 273 mm (1.89 to 10.7 in).

Key Features

• Small-size, lightweight device with optimized screening.
• Highest safety classification for the source supplied (DIN 25426/ISO 2919, typical classification C66646).
• Fire-resistant version: 821 °C (1510 °F) for 30 minutes.
• Compact and easy to mount.
• Various angles of emission for application adaptation.
• Manual switch-on and switch-off (ON/OFF).
• Padlock to fix switching positions (ON/OFF), or snap hook to fix the ON position.
• Switch status is easily identified.
• Integrated mounting device for density measurement on pipes.
• Optional calibration plate for quick and easy density recalibration.

Function

The FQG60 source container houses a radioactive source within a lead-filled steel casing, screening gamma radiation. Radiation is emitted directionally through a focusing channel for radiometric measurement.

• Attenuation factor (FS) in beam direction: 11 (half-value-layers: 3.5)
• Attenuation factor (FS) opposite beam direction: 22 (half-value-layers: 4.5)
• Maximum activity of radiation source: ¹³⁷Cs - 1.11 GBq (30 mCi)

Mechanical Construction

• Weight: Max. 18 kg (39.69 lbs)
• Materials:
  • Source insert and internal components: Stainless steel 304 (1.4301)
  • Housing: Stainless steel 304 (1.4301), glass bead blasted
  • Exterior seal: Pure graphite and metal-backed graphite gasket
  • Screening material: Lead (shutter), Lead and 304 (1.4301) (housing/source holder)
  • Padlock: Brass (body), Hardened steel (shackle)
  • Snap hook: 316 L (1.4404)

Ambient Conditions

• Ambient temperature: –40 to +120 °C (–40 to +248 °F)
• Ambient pressure: Atmospheric pressure
• Vibration resistance: IEC EN 60068-2-64 test Fh; 10 to 2000 Hz; 0.01 g²/Hz
• Shock: IEC-60068-2-27 test Ea (30 g; 18 ms; 3 shocks / direction / axis)
• Degree of protection: IP66; NEMA Type 4
• Fire resistance: 30 min. @ 821 °C (1510 °F)

Identification

• Nameplates: Include source container ID, serial number, order code, emission angle, local dose rate, radiation source details (serial number, radionuclide, activity, date).

Installation

• Incoming acceptance, transport: Functions as Type-A packaging (IATA rules). Package dimensions: 375 x 375 x 275 mm (14.8 x 14.8 x 10.8 in). Bow-type handles are for shutter operation, not transport. Use fastening lug for lifting.
• Mounting: Can be mounted using L-profiles or a mounting plate, on low-vibration external constructions, or directly on pipes with the FHG61 clamping device (accessory). Mounting and dismounting must be in the "OFF" position, secured by a padlock.
• Torque for mounting screws: 32 Nm (23.6 lbf ft) for stainless steel screws with a minimum tensile strength of 700 N/mm².

Operation

• Switching Radiation ON: Ensure no personnel are in the radiation area. Only specially trained personnel may switch the radiation ON. Remove padlock (if applicable), move shutter to ON position, secure with padlock or snap hook.
• Switching Radiation OFF: Reverse of switching ON. Remove snap hook or padlock, move shutter to OFF position, secure with padlock.
• Recalibration (Density Measurement): Requires an optional calibration plate. Shutter must be in the ON position. Recalibration involves introducing the plate into the radiation path under constant conditions (empty pipe or filled with defined medium) and recording the displayed density value.

Maintenance and Inspection

• Cleaning: Clean with a damp cloth and water. Observe safety instructions.
• Routine Inspections:
  • Visual inspection for corrosion.
  • Test shutter mobility (ON/OFF function).
  • Check label readability and warning symbols.
  • Test padlock and snap hook function.
• Routine Shutter Mobility Test: Move shutter between ON and OFF positions to ensure easy movement without visible corrosion.
• Routine Leak Test Procedure: Wipe samples are taken at indicated points and analyzed. A source is considered leaking if > 185 Bq (5 nCi) is detected (US limit).

Emergency Procedure

• Objective: Secure an area where an exposed source is known or suspected, or if the source container cannot be switched OFF.
• Procedure: Cordon off the area. If the shutter cannot be switched OFF, unbolt the container, pointing the emission channel towards a thick wall or mounting a plate in front of it. If the source is outside the container, handle with pliers/tongs and minimize transport time.
• Notification to Authority: Notify local authorities within 24 hours.

Procedures after termination of the application

• Internal Measures: Switch off the source container, remove it according to regulations, and store it in a lockable room. Inform authorities. Do not scrap the source with plant parts; return it.
• Return: Contact Endress+Hauser Sales Center for return organization (reuse or recycling). An inspection certificate (wipe test) no older than three months is required.

Ordering Information

• Scope of Delivery: Source container FQG60, radiation source (built-in), radiation warning sign, Technical Information/Operating Instructions TI00445F/00, Technical Information TI00439F/00.
• Delivery: Radioactive sources require a handling permit (Germany) or import license (other countries). Generally supplied loaded with the radiation source. Delivered in the OFF position, secured with a padlock.

Accessories

• Clamping Device FHG61
• Calibration plate

Disclaimer: Extraction may miss figures, footnotes, or revisions; contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror