Sentinel projetor Operating And Maintenance Manual

880 series source projector

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Operating and Maintenance Manual

MAN-027-May 2007

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Page 1 Operating and Maintenance Manual MAN-027-May 2007...
Page 2 DANGER - IMPORTANT WARNINGS The system must be operated only by trained and qualified radiographers who have read and understand this Operating Manual or by trained assistants working under their direct supervision. WARNING The use of this radiographic exposure device by unqualified personnel or when safety procedures are not fully met could result in life-threatening dangers.
Page 3: Table Of Contents
CONTENTS _______________________________________________________________________ TECHNICAL SPECIFICATIONS _______________________________________________________________________ OPERATING INSTRUCTIONS _______________________________________________________________________ DAILY INSPECTION INSTRUCTIONS _______________________________________________________________________ MAINTENANCE INSTRUCTIONS _______________________________________________________________________ SAMPLE TRANSPORTATION INSTRUCTIONS _______________________________________________________________________ DEFINITIONS AND TERMS _______________________________________________________________________ EMERGENCIES AND PERSONNEL SAFETY _______________________________________________________________________ INSTRUCTIONS FOR DISPOSAL _______________________________________________________________________ 1.1 – 1.7 2.1 – 2.11 3.1 – 3.9 4.1 –...
Page 4: Front View
Outlet Port Guide Tube Connector 9 in 229 mm 7.5 in 191 mm 880 Sigma 130 Ci (4.81 TBq) Maximum package weight With jacket 52 lb (24 kg) Without jacket 46 lb (21 kg) 880 Omega* 15 Ci (0.55 TBq)
Page 5: Technical Specifications
The Model 880 Delta is identified by a yellow colored jacket. The Model 880 Sigma is identified by a black colored jacket. The Model 880 Elite is identified by a blue colored jacket and the Model 880 Omega is identified by a safety orange colored jacket.
Page 6 Model 880 Delta authorized contents Isotope Assembly Model Number Ytterbium-169 91810 Selenium-75 A424-25W Iridium-192 A424-9 Cobalt-60 A424-19 Cesium-137 A424-30 Model 880 Sigma authorized contents Isotope Assembly Model Number Ytterbium-169 91810 Selenium-75 A424-25W Iridium-192 A424-9 Cobalt-60 A424-19 Cesium-137 A424-30 Gamma...
Page 7 Model 880 Elite authorized contents Isotope Assembly Model Number Ytterbium-169 91810 Selenium-75 A424-25W Iridium-192 A424-9 Cobalt-60 A424-19 Cesium-137 A424-30 Model 880 Omega authorized contents Isotope Assembly Model Number Ytterbium-169 91810 Selenium-75 A424-25W Iridium-192 A424-9 Source output Isotope At 1 m per Ci (37 GBq) Ytterbium-169 0.125 R/hr Selenium-75...
Page 8 Note: The total length of source guide tubes utilized must be shorter in length than the remote controls to ensure the source assembly will project into the working position. e.g. When using 25 ft (7.6 m) remote controls, a maximum of three 7 ft (2.1 m) source guide tubes can be used with a combined length of 21 ft (6.4 m).
Page 9 Model 880 Delta, Model 880 Sigma, Model 880 Elite and Model 880 Omega Weight of Exposure Device Delta: 52 lb (24 kg), Sigma: 52 lb (24 kg) Elite: 42 lb (19 kg), Omega: 33 lb (15 kg) Weight of Depleted Uranium Shield Delta: 34 lb (15.4 kg), Sigma: 34 lb (15.4 kg)
Page 10 These industrial radiography systems are used as an exposure device, a Type A shipping container and for the Models 880 Delta, 880 Sigma and 880 Elite as Type B(U)-96 shipping containers for QSA Global, Inc. source assemblies. The purpose of this manual is to provide information that will assist qualified radiographers in using the Model 880 Delta, 880 Sigma, 880 Elite and 880 Omega gamma radiography systems.
Page 11: Warranty And Limitation Of Liability
The warranty on this device is specifically limited to its use only with sealed sources and connectors, parts, and accessories manufactured by QSA Global, Inc. QSA Global, Inc. has received equipment approvals for the Model 880 Delta, Model 880 Sigma and Model 880 Elite systems from the Commonwealth of Massachusetts, the USNRC Transportation Branch, the U.S.
Page 12: Restricted Area
OPERATING INSTRUCTIONS Job site safety precautions Instruments The radiographer and radiography assistants must at all times wear a film badge or TLD and pocket dosimeter with a range of 0-2 mSv (0-200 mRem). Regulatory requirements in the USA also require that an audible alarm ratemeter be worn at temporary jobsites.
Page 13 It is essential that the 5 STEPS set out below are followed in the correct order to ensure safe operation and compliance with regulations. STEP 1 Exposure Device Survey STEP 2 Connecting the Source Guide Tube(s) STEP 3 Connecting the Remote Control Cable STEP 4 Projecting and Retracting the Source Assembly STEP 5...
Page 14 STEP 2 Connecting the Source Guide Tube(s) OPERATING INSTRUCTIONS Simultaneously pull and rotate the spring-loaded outlet port cover a quarter of a turn in a clockwise direction. Insert the bayonet fitting of the source guide tube Into the exposed outlet port. Align the GREEN MARKINGS on the bayonet...
Page 15 The remote control crank mechanism (operator's hand-crank) should be placed as far away from the source focal position as possible (preferably behind shielding). Connecting the Remote Control Cable Connect the control cable to the source projector as shown. OPERATING INSTRUCTIONS...
Page 16 STEP 3 Connecting the Remote Control Cable OPERATING INSTRUCTIONS Unlock the plunger lock with the key. Turn the selector ring from LOCK to CONNECT The protective cover will disengage from the projector.
Page 17 STEP 3 Connecting the Remote Control Cable OPERATING INSTRUCTIONS Insert the protective cover into the lock housing during use of the device. Check the control cable and source assembly connectors using the NO GO gauge according to the daily inspection section.
Page 18 STEP 3 Connecting the Remote Control Cable Checks Before Exposure of the Source Verify that the source guide tubes are attached to the outlet port. Verify that the remote control connector assembly is correctly connected to the exposure device’s locking mechanism. Ensure that no personnel are inside the Restricted Area or exposure room.
Page 19 When the RED MARKING is visible, the source assembly is free to be projected from, and retracted to, the projector. Ensure all personnel leave the immediate area. Got to the remote control crank. If an odometer is fitted, adjust the reset knob to read zero.
Page 20 Survey meter readings observed during the projection operation should increase rapidly from background to a high level as the source emerges from the projector. Then readings should fall as the source moves out towards the focal point, fall sharply as the source enters a collimator (if used) and remain steady throughout the exposure.
Page 21 Allow the crank handle to return to a neutral position, thereby relieving any tension (force) on the control cable that would cause source movement when unlocking the projector. At this point the source cannot be moved out of the stored position.
Page 22 STEP 5 Dismantling equipment Remote control unit Unlock the exposure device and then rotate the selector ring counter-clockwise from LOCK to CONNECT. The remote control connector will partially disengage from the exposure device's locking mechanism. Completely disengage the remote controls from the exposure device by disengaging the control cable connector from the source assembly connector.
Page 23: Daily Inspection Instructions
DAILY INSPECTION INSTRUCTIONS Introduction The QSA Global, Inc. Model 880 Delta, Sigma, Elite and Omega radiographic exposure devices provide innovation to the most widely used family of radiographic exposure devices utilized for on-site gamma radiography. The Model 880 Series exposure devices are portable, lightweight and permit use of several different isotopes commonly needed by the nondestructive testing community.
Page 24 Figure 3.1 Source assembly and remote control cable connectors Exposure Device The source assembly is shown in the stored position in a titanium or ‘S’ tube at the center of the depleted Uranium shield of the exposure device. (See figure 3.2) A remote control unit is shown with its control cable connector coupled to the source assembly.
Page 25 First, the locking mechanism requires a deliberate action to enable exposure of the source assembly. This is accomplished by coupling the control cable connector to the source assembly connector, coupling the remote control connector to the exposure device locking mechanism and then pushing a lock slide from the SECURED position into the EXPOSE position.
Page 26: Transit Mode
DAILY INSPECTION INSTRUCTIONS Transit Mode Rotating the handle of the remote control crank in the EXPOSE direction (counter-clockwise) moves the source assembly out of the shielded position in the exposure device and into the source guide tubes (projection sheaths). (See figure 3.3) The source assembly is under positive mechanical control using the remote control crank.
Page 27 Control Cable Exposure Device Remote Locking Control Crank Mechanism Figure 3.4 Sealed source in the exposure mode Daily Inspection of the System A daily inspection of the gamma radiography system for obvious defects is essential to ensure the equipment is in a safe and proper operating condition. It is important that all radiographers perform or supervise this inspection prior to the first radiographic exposure of the shift regardless of any previous inspections that may have been performed that day.
Page 28 Inspect the labels on the exposure device or the transport case to ensure they are legible and securely attached to the unit. The warning label containing the trefoil should be legible from a distance of at least 3 ft (approximately 1 m). This label warns the individuals in the immediate vicinity of the presence of radioactive materials and permits them to take measures to minimize their exposure to radiation.
Page 29: Important Warning
odometers to obtain an approximation of the travel distance. One full revolution of the crank handle is equal to approximately 10 in (25.4 cm) of travel. Two remote control conduits (sheaths, housings) are attached to the control crank. One conduit contains the working side of the control cable that drives the source assembly out of the exposure device and through the source guide tubes.
Page 30 Control Conduit Inspection: a. Inspect the control conduit where it is swaged onto the fittings that mount on the control crank. There should be no evidence of cracks or breaks in the PVC sheath. Also, look for bulges in that area that result from repeated flexing.
Page 31: Important Reminder
d. A final check of the control cable connector and source assembly connector is accomplished by use of a Model 550 NO GO gauge to check for significant wear on the connectors that would affect safety. Without using excessive force, check the following four positions (see figure 3.5): Ball at the end of the control cable connector must NOT GO into the hole of the gauge.
Page 32: Maintenance Instructions
Quarterly (Routine) and Annual (Complete) Maintenance Requirements Radiographic exposure devices and associated equipment must be maintained regularly by trained and qualified personnel to ensure consistent and safe operation of the radiographic system. The routine inspection and maintenance also ensures that the integrity of the Type B(U)-96 and Type A transport packages are maintained in compliance with the package certification numbers;...
Page 33 Routine (Quarterly) Maintenance Requirements Remote Controls Disassemble, clean, inspect and maintain the remote control crank, control conduits and control cable according to the complete service section. Record the results of the inspection and any repairs that are performed. Any components found to be deficient during the inspection must be removed from service until repaired or replaced.
Page 34 Check the locking mechanism and plunger lock to verify attachment and operation. Grasp the entire mechanism with one hand and attempt to shift the mechanism. Retaining screws that have been loosened from excessive vibration or improper maintenance will allow the movement of the locking mechanism during this check.
Page 35 Routine (Quarterly) Maintenance Records Records of all equipment inspected and maintained during the routine maintenance must be recorded. Records should indicate: • The date of inspection and maintenance. • Name and signature of the qualified individual performing the required inspections. •...
Page 36 Leak Testing Leak Test of the Radioactive Sealed Source Periodic leak tests of the radioactive sealed source are required by most national and international regulations. The leak test provides a confirmation of the integrity of the hermetically welded sealed source by determining the amount of removable contamination. In most regulatory jurisdictions, a leak test of a sealed source must be performed every 6 months or prior to its first use after removal from storage.
Page 37 The analysis performed on the wipe test must be capable of detecting the presence of 0.005 µCi (185 Bq) of radioactive material on the test sample. If the test sample reveals 185 Bq (0.005 µCi ) or more of removable DU contamination, the exposure device must be removed from service until an evaluation of the wear on the ‘S’...
Page 38 Model 880 Series Annual Maintenance Requirements Model 880 Series exposure devices must receive inspection and maintenance at least once a year. The locking mechanism and outlet port mechanism must be removed from the exposure device and disassembled for proper cleaning, inspection and lubrication of components that are critical to safety. These procedures can only be performed on an empty exposure device, which requires transfer of the radioactive source assembly into an approved storage container.
Page 39 Begin assembly of the locking mechanism by lightly coating all components with MIL-G-23827B (or C), MIL-PRF-23827C, (or equivalent radiation resistant grease authorized by QSA Global, Inc.). Treat all screw thread ends with Vibratite™ or Locktite™ thread sealant. Mount the locking mechanism plate horizontally in a vise or fixture with the plunger lock and retainer at a 12 o’clock position.
Page 40 MAINTENANCE INSTRUCTIONS Remove the front plate containing the outlet port mechanism from the empty Model 880 device by removing the four 5/16-18 x 1½ in socket button-head screws using the tamperproof tool bit mounted in a ratchet. After removing the outlet port mechanism, clean the ‘S’ tube of the exposure device by pushing cloth swabs wetted with solvent through the ‘S’...
Page 41 MAINTENANCE INSTRUCTIONS Re-assemble the Model 880 exposure device by performing the following steps: Apply Permantex anti-seize thread lubricant to the first several end threads of the back plate’s (locking mechanism) four 5/16-18 x 1½ in socket button-head screws. Align and attach the locking mechanism assembly to the exposure device’s end plate by installing the four 5/16-18 x 1½...
Page 42 Annual Maintenance for the Remote Controls Tools required for complete maintenance of Models 692, 693, 664 remote controls: • 11/16 in open-end wrench for the control conduit swage fittings. • 1/2 in open-end wrench for the 5/16 in control crank handle bolt. •...
Page 43 Perform the following inspections of the control cable: a. Use the Model 550 NO GO gauge to inspect the control cable connector for wear. Closely inspect the connector for bends or cracks in the neck (shank) area and dented areas on the ball of the connector.
Page 44 MAINTENANCE INSTRUCTIONS Clean the interior of both remote control conduits by pouring 4-5 oz (100 ml) of clean solvent into one end. Use compressed air to blow the solvent through the entire length of conduits into a clean white cloth attached to the opposite end. Repeat this cleaning process until the solvent blown through the conduit comes out clean.
Page 45 CAUTION Wear safety glasses when inserting the wear strip. It will be under tension and could suddenly fly out during assembly. Place the drive wheel in the lower half of the control crank housing making sure the spacer rings are between it and the wheel bearings if applicable.
Page 46 Connect the RETRACT control housing to the control crank housing. Retract the control cable fully, watching for any binding that may indicate damage to the control housing. If applicable, reset the odometer to zero with the control cable fully retracted. Replace the protective rubber cap over the end of the safety connector assembly.
Page 47 Inspect the swage fittings of each source guide tube to ensure the threads are not stripped or galled. If the threads are damaged, the use of a 1in-18 tap or die and oil can be used to clean the damaged area.
Page 48 Annual Maintenance Records Records of all equipment inspected and maintained during the annual maintenance must be recorded. Records should indicate: • the date of the inspection and maintenance. • name of the qualified individual performing the required inspections. • problems found and maintenance or repairs performed. •...
Page 49 MAINTENANCE INSTRUCTIONS Rear Plate Assembly 4.18...
Page 50 REAR PLATE ASSEMBLY ITEM PART NO. QTY. DESCRIPTION 88014 LOCK COVER ASSEMBLY 85701-5 SELECTOR RING RETAINER 88026 SELECTOR RING SPR005 COMPRESSION SPRING 88025 SLEEVE 88024 LOCK SLIDE SPR006 COMPRESSION SPRING 66001-6 ANTI-ROTATE LUGS SPR004 COMPRESSION SPRING 88021 REAR PLATE ITEM PART NO.
Page 51 MAINTENANCE INSTRUCTIONS Front Plate Assembly 4.20...
Page 52: Front Plate Assembly
FRONT PLATE ASSEMBLY ITEM PART NO. QTY. DESCRIPTION 88033 PORT COVER • 88033A PORT COVER SCR162 SET SCREW • PIN036 ROLL PIN 88031 FRONT PLATE 88036 WASHER 88032 ROTOR (ROLL PIN TYPE) • 88032A ROTOR (SET SCREW TYPE) SPR033 COMPRESSION SPRING 88037 SHAFT (SET SCREW TYPE)
Page 53 MAINTENANCE INSTRUCTIONS CONTROL ASSEMBLIES SOURCE GUIDE TUBES 4.22...
Page 54 CONTROL ASSEMBLIES ITEM PART NO. QTY. DESCRIPTION SCR125 IN BIND HEAD SCREW SCR008 IN BIND HEAD SCREW BLT008 HEXAGONAL BOLT WSH019 WASHER 68901 CRANK ARM BBS-004 BRAKE BUSH 81800-10 CONTROL CRANK HOUSING 68900-8 CRANK DECAL 68900-4 BRAKE JAW 68900-3 BRAKE ARM BBS-001 BALL BEARING ASSEMBLY 68900-7...
Page 55 MAINTENANCE INSTRUCTIONS 4.24...
Page 56: Sample Transportation Instructions
Transport in the United Kingdom: Refer to the regulations as listed on the ADR approval Certificate. Transport Package The Model 880 Delta, 880 Sigma, 880 Elite and 880 Omega are approved as radiographic exposure devices. All but the Model 880 Omega are approved as Type B(U)-96 transport packages under the certification number USA/9296/B(U)-96.
Page 57 Receipt of Radioactive Material NOTE A radioactive material package must be accepted from the carrier at the time it is delivered. [10CFR20.1906(a)(1)] If a radioactive material package is to be held at the carrier's terminal for pickup, arrangements must be made to receive notification from the carrier of the arrival of the package at the time of arrival. The package must be picked up expeditiously upon receipt of notification (within three hours if practicable).
Page 58 Shipment of Radioactive Material Prior to shipment of a Type B package within the USA, assure that you are a registered user of the radioactive material package you wish to ship. Also, assure that you have appropriate quality assurance procedures for Type B packages. [10CFR71.12, 10CFR34.31(b)] Pre-shipment training requirements: Prior to shipping hazardous materials, personnel must be trained in accordance with 49CFR172, Subpart H and be retrained every three years.
Page 59 If the shipping package is to be packaged inside a crate or other outer packaging, the outer packaging must be strong enough to withstand the normal conditions of transport and must not reduce the safety of the package. The shipping package must be placed within the outer package with sufficient blocking to prevent shifting during transportation.
Page 60 The TI is the maximum radiation level measured in mRem/hr at a distance of 1m from the external surfaces of the package. When recording the TI, the dose rate units of mRem/hr are not listed, for example a reading of 20 µSv/hr (2 mem/hr) would indicate a TI = 2.0. (Note that the TI is rounded to the nearest tenth value.) Properly complete two shipping labels indicating the contents (e.g.
Page 61 NOTE: For shipments in company vehicles to and from job sites, the shipper’s certification is not required. k. The shipping papers must indicate your company's emergency telephone number. The telephone number must have 24-hour coverage in case of an emergency concerning your shipment. The telephone number must be clearly visible on the shipping paper and must be answered by a person that can provide immediate emergency response information.
Page 62 Shipment of Empty Uranium Shielded Containers Assure that the package does not contain a radioactive source. Perform the following procedure to confirm there are no unauthorized source assemblies within the container: • Transfer the authorized source assembly from the exposure device in accordance with the source changer operations manual.
Page 63 Required after 1 January 2007, the outside of the package must include the following label [IATA 10.7.4.4.3]: If the surface radiation level exceeds 5 µSv/hr (0.5 mRem/hr), or if there is a measurable radiation level at 1m from the surface, use the criteria of Table 1 to determine the proper shipping labels to be applied to the package.
Page 64 ix. For air shipments, the package must be labeled with a ‘Cargo aircraft only’ label and the shipping papers must state: ‘This shipment is within the limitations prescribed for cargo only aircraft’. x. Your company's 24-hour emergency telephone number. xi. The weight of the package including the unit of measurement of the hazardous material covered by the description (e.g.
Page 65 Place the transport package in the vehicle. Properly brace and secure the package against movement in the vehicle. [49CFR177.842(d)] Survey the driver's compartment to assure that the radiation level does not exceed 0.02 mSv/hr (2 mRem/hr). [49CFR177.842(g)] Note: This requirement is mandatory only for exclusive use shipments by a common carrier.
Page 66 Radioactive material transport checklist Date Destination Transport Container Model Radionuclide Type of Label Applied Survey Meter Model Calibration Date Dosimeter Serial Number Final Reading Radiation Area Signs Rope Radioactive Material Sign Radiation Survey (Record highest reading) Vehicle (18 in from surface) Packages properly marked and labeled (including transport index) Packages secured in vehicle Shipping papers properly completed...
Page 67: Definitions And Terms
Current equipment requirements require devices be designed and tested to ISO/ANSI standards and pertinent transportation regulations for transport containers. Also known as: projector, gamma ray projector (G.R.P.), camera, pill-box, source-box, exposure container.
Page 68 Exposure head Device which locates the sealed source included in the source assembly, in the selected working position and prevents the source assembly from projecting out of the projection sheath. Also known as: source stop, end stop, snout and head-hose. Locked position Describes the condition when the lock on a radiographic exposure device or transport container is fully engaged to lock the source assembly in place and the key is removed from the lock.
Page 69 Source assembly A source holder with a sealed source attached or included. In cases where the sealed source is directly attached to the control cable without the use of a source holder, the source assembly is the control cable with the sealed source attached. In cases where the sealed source is not attached to the control cable nor included within the source holder, the sealed source is the source assembly.
Page 70: Emergencies And Personnel Safety
Emergencies During the termination of a radiographic exposure, observation of the survey meter provides an indication of source movement while cranking the remote control handle. After retracting the sealed source into the exposure device, radiographers are required to perform a confirmatory survey of the exposure device, the projection sheaths and beam limiter when used.
Page 71 EMERGENCIES AND PERSONNEL SAFETY Access to Restricted Areas The site where radiography is performed must be separated from other work areas by as much distance as possible. If applicable, check for occupation of the areas above and below the radiography site. Clearly defined boundaries must be set up and warning signs displayed to provide warning and prevent access to the radiography site by unauthorized personnel before any exposure begins.
Page 72: Instructions For Disposal
INSTRUCTIONS FOR DISPOSAL Disposal By international regulations, radioactive materials that are no longer required must be transferred to a licensed recipient for final disposition. Cobalt-60 source assemblies that have depleted beyond their useful working life may be returned to authorized recipients using a source changer authorized for the specific model source assembly.
Page 73 Sales SENTINEL™ QSA Global, Inc. 6765 Langley Drive Baton Rouge, Louisiana 70809 USA Telephone + 1 225 751 5893 Toll Free + 1 800 225 1383 + 1 225 756 0365 or + 1 225 751 8082 Manufacturing SENTINEL™ QSA Global, Inc. 40 North Avenue, Burlington, Massachusetts 01803 USA Telephone + 1 781 272 2000...

This manual is also suitable for:

Delta 150 ci Sigma 130 ci Elite 50 ci Omega 15 ci