Vega SHLG User manual

Operating Instructions
SHLG®
Source Holder
Document ID:
39089
Radiometric

39089-US-210509 3
Revision Table
Revision Table
This document contains proprietary information of VEGA Americas, Inc. It shall
not be reproduced in whole or in part, in any form, without the expressed written
permission of VEGA Americas, Inc.
The material in this document is provided for informational purposes and is
subject to change without notice.
ISO 9001:2015 approval by Eagle Registrations Inc. to these Quality
Management System Standards: ASQ/ANSI/ISO 9001:2015, Approval
Certificate No. 5504.
Version of manual Description Date
1.0 Initial release 101001
2.0 Converted to VEGA style manual 210509

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Revision Table
NOTES

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Table of Contents
0Table of Contents
Revision Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
About this Document. . . . . . . . . . . . . . . . . . . . . . . . . . 9
Intended Use............................................................................. 9
Targeted Group......................................................................... 9
Explanation of Symbols .......................................................... 10
For Your Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
General Safety ........................................................................ 11
Radiation Safety...................................................................... 11
Applications............................................................................ 12
Intended Applications........................................................................ 12
Certifications ........................................................................... 12
Standards.......................................................................................... 13
Safety Information for Ex Areas .......................................................... 13
Manufacturer's Responsibility ................................................. 13
User's Responsibility.............................................................. 13
Product Description. . . . . . . . . . . . . . . . . . . . . . . . . . 15
Components............................................................................. 15
Source Housing................................................................................. 16
Source Material ................................................................................. 16
Beam Port ......................................................................................... 16
Shipping Cap..................................................................................... 16
Beam Direction Label........................................................................ 16
Caution-Radioactive Material Label .................................................. 16
Shutter............................................................................................... 17

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Table of Contents
Lifting Eye.......................................................................................... 17
Documentation .................................................................................. 18
Storage and Handling............................................................. 18
Source Holder .................................................................................... 18
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
General................................................................................... 19
Unpack the Equipment ........................................................... 19
Location .................................................................................. 20
Internal Obstructions ......................................................................... 20
External Obstructions ........................................................................ 21
Preferred Orientation......................................................................... 21
Continuous Level ................................................................................. 21
Point Level ........................................................................................... 22
Source Interference ............................................................................. 22
Temperature ........................................................................... 23
Ambient Temperature........................................................................ 23
Process Temperature........................................................................ 23
Insulation ........................................................................................... 23
Mounting Instructions.............................................................. 23
Mounting Checklist ............................................................................ 24
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Principle of Operation ............................................................. 25
Commission the Source Holder......................................................... 25
Commissioning Call Checklist ........................................................... 25
Normal Operation ................................................................... 26
Source Holder Installation Requirements .......................................... 26
Preliminary Survey ............................................................................ 27

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Table of Contents
Perform a Leak Test.......................................................................... 27
Radiation Survey after Installation .................................................... 28
Shutter Operation Test...................................................................... 28
Shutter (ON/OFF) Mechanism .......................................................... 29
ON/OFF Indicator ............................................................................. 30
Special Conditions ................................................................... 31
Radiation Fields Inside Vessels ........................................................ 31
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Periodic Maintenance Schedule ............................................. 33
Diagnostics ............................................................................. 34
Troubleshooting ...................................................................... 34
Spare Parts ............................................................................. 35
Electronics .............................................................................. 35
Equipment Repair ................................................................... 35
Repair Information............................................................................. 36
Return the Source Holder for Repair................................................. 36
Dismounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
De-commission the Source Holder ......................................... 37
Dismount or Removal Requirements ................................................ 37
Disposal .................................................................................. 39
Source Disposal ................................................................................ 39
Supplemental Information. . . . . . . . . . . . . . . . . . . . . 41
Specifications......................................................................... 41
Technical Data .................................................................................. 41
SHLG .................................................................................................. 41
Dimensions ....................................................................................... 43

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Table of Contents
Accessories ............................................................................ 44
Customer Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Find Help ................................................................................ 45
U.S., Canada, and Worldwide ................................................ 45
Necessary Information............................................................ 46

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About this Document
1 About this Document
1.1 Intended Use
These Operating Instructions provide specific instructions for the safe setup and
operation of the source holder. The instructions and procedures in the documentation
are designed for users seeking product knowledge, usage, and functionality.
Figure 1.1 SHLG
1.2 Targeted Group
The Operating Instructions not only provide instructions for the setup and
operation of the instrument, but also specifically address topics and procedures
required by an intermediate level user such as the following:
• Operator
• Instrumentation Technician
• Field Service
• Internal Support
• Process Engineers
• Field Sales
The instructions in this guide are written for qualified and well-
trained personnel. Make sure you read and understand all the
instructions and safety guidelines in the Operating Instructions
before operating this equipment.
!
NOTE

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About this Document
1.3 Explanation of Symbols
Danger
Identifies an imminently hazardous situation which, if not
avoided, will result in death or injury.
Warning
Identifies a potentially hazardous situation which, if not
avoided, could result in death or injury.
Caution
Identifies a potentially hazardous situation which, if not avoided,
may result in minor or moderate injury or in equipment damage.
Note
Identifies tips or useful information about the instrument.
Radiation
Introduces information concerning radioactive materials or
radiation safety.
Ex Symbol
Provides special instructions for Ex applications.
•Bulleted list
Indicates a list of items with no intended or implied sequence
1StepsorSequence
Identifies successive steps in a procedure
!
DANGER
!
WARNING
!
CAUTION
!
NOTE

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For Your Safety
2 For Your Safety
2.1 General Safety
Make sure you read and understand all the instructions and safety guidelines in
the Installation and Operation Guide before operating the source holder. The
instructions in this guide are written for qualified and trained personnel.
Your equipment requires strict observance of standard regulations and
guidelines. You must take note of the safety instructions in these operating
instructions. In addition, you must adhere to the country-specific installation
standards and all prevailing safety regulations and accident prevention rules.
2.2 Radiation Safety
The radiation safety information is included as a service to you and serves as a
guide only in the most general terms. Regulatory agencies throughout the world
have different requirements, regulations, and restrictions with respect to the use
of radiometric instrumentation. You are responsible for familiarizing yourself with
your national and local regulations. These regulations are enforced by agencies
such as:
• U.S. Nuclear Regulatory Commission (NRC) or the Agreement State
• Atomic Energy Control Board (Canada)
• International Atomic Energy Agency (IAEA)
Your regulatory agency may limit or require certain activities including:
• Installation
• Maintenance
• Relocation
• Testing
• De-commissioning

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For Your Safety
Field Service Engineers have the proper licenses required to install and
commission radiometric sources and can instruct you how to operate the source
holder correctly and safely.
2.3 Applications
Intended Applications
The SHLG source holder is designed for radiation-based measurement of
applications including density and continuous and point level. The most common
industries for the SHLG include:
• Chemical
• Petrochemical
• Offshore
• Refining
2.4 Certifications
The SHLG source holder is designed for certification compliance from the
following agencies:
•AERB-India
•CNSC-Canada
•GOST-R-Russia
• Northern Territories
• ODH/NRC - Ohio Department of Health and Nuclear Regulatory Commission
Refer to the Radiation Safety Manual for more detailed safety
information and instructions.
If individuals need to enter the vessel on which the gauge is used,
you must follow proper lock-out procedures. See the Radiation
Safety Manual for the specific lockout procedures and other safety
responsibilities.
!
NOTE
!
CAUTION

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For Your Safety
Standards
The SHLG source holder is regulated by the U.S. Nuclear Regulatory
Commission (NRC). Compliance certificates are issued by the State of Ohio
under an agreement with the NRC.
Safety Information for Ex Areas
Please note the Ex-specific safety information for the installation and operation of
the SHLG in Ex areas.
2.5 Manufacturer's Responsibility
VEGA source holders are designed to International standards for construction
and safety.
2.6 User's Responsibility
All users who operate and service the equipment are responsible for ensuring
safety requirements are met. This responsibility requires a basic understanding
of the nature of radiation and an adherence to all operating procedures.

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For Your Safety
NOTES

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Product Description
3 Product Description
3.1 Components
The SHLG®source holders are used to position and protect a radioactive source
near a process vessel orpipe. Radiation from the source is directed through the
process by an integral collimator. A radiation detector placed opposite the source
holder measures radiation fluctuations caused by process conditionchanges. The
detector correlates radiation levels to process conditions.
The radiation beam for the SHLG®source holders are controlled manually with a
push/pull shutter. In theON position, the source tube assembly is pushed down
against the gasket stop with the handle. The source is in the OFF or shielded
position when the source tube assembly is in the extended position.
These source holders are one component of a continuous or point level, density,
or weight measuring
system. The SHLG
®
source holders are gamma radiation
devices secured in a fixed position near a vessel
or pipe and are responsible for
directing radiation through the process material.
The SHLG®source holders are constructed from stainless steel or carbon steel
with polyester powdercoating and perform the following:
• Houses a radiation-emitting source capsule.
• Protects the radioactive source.
• Provides a means for shielding and locking out the radiation beam.
• Directs radiation safely through the process.
• Shields all areas in which radiation is not intended.
Source holders include some or all of the following components:
• Source Housing
•Source
•Material
•BeamPort
• Shipping Cap
•Beam

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Product Description
• Direction Label
• Caution-Radioactive Material Label
• Shutter
•Lifting
•Eye
• Documentation
Source Housing
A welded, closed stainless steel, lead, or iron container that houses the heli-arc
welded stainless steelsource capsule.
Source Material
The source material is either Cesium 137 (Cs-137) or Cobalt 60 (Co-60).
Beam Port
The front face of the source holder is the beam port.
Shipping Cap
The shipping cap covers the beam port during source holder transportation.
Beam Direction Label
An arrow label identifies the direction of the radiation beam.
Caution-Radioactive Material Label
The Caution-Radioactive Material label provides the following:
•Isotope
• Activity
• Model Number
•Serial
• Number

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Product Description
• Date of Assay
• Distributor Name
Figure 3.1 Caution-Radioactive Material Label
Shutter
A shutter is the mechanism that opens or closes the radiation beam port.
Lifting Eye
A lifting eye located on top of the housing helps when lifting the source holder
into place for installation.
You must not remove the stainless-steel Caution-Radioactive
Material Label.
!
NOTE

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Product Description
Documentation
The documentation provided with the SHLG source holder includes some or all
of the following:
• Operating Instructions Manual
• Quick Reference Guide
• Technical Reference Manual
• Radiation Safety Manual
•SIL
• Safety Manual (if applicable)
• ATEX Safety Manual (if applicable)
3.2 Storage and Handling
You are responsible for familiarizing yourself with all national and local radiation
safety guidelines andprocedures prior to storing or handling radioactive
materials. See the Radiation Safety Manual for specific details.
Source Holder
If you must package the source holder, follow these steps:
1. Ensure the shutter is in the OFF or CLOSED position and locked, if source
holder has a shutter.
2. Check the current local regulations (U.S. Nuclear Regulatory Commission,
Agreement State, or other)to determine if this area must have access
restrictions.
If you must store the source holder, follow these steps:
1. Store the source holder in a clean, dry, and secure area.
2. Ensure the shutter is in the OFF or CLOSED position and locked, if source
holder has a shutter.
3. Check the current local regulations (U.S. NRC, Agreement State, or other)
to determine if this areamust have access restrictions.Detent Assembly.

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Mounting
4 Mounting
4.1 General
Measurement accuracy is highly influenced by the proper installation of the
equipment. This section
contains the guidelines for optimizing performance
through proper installation. You may also reference the
application sizing sheet
and any installation drawings VEGA provided at the time of order.
4.2 Unpack the Equipment
Make sure you read and understand all the instructions and safety guidelines in
the Operating Instructions before you unpack, install, or operate the equipment.
The instructions in this manual arewritten for qualified and trained
personnel.Conduct visual inspection of source holder.
When you unpack your source holder, make sure you follow the steps below:
1. Unpack the unit in a clean, dry area.
2. Visually inspect the source holder for damage.
3. File a claim against the carrier if there was damage to the unit during
shipment. Make certain you report the damage in detail. Any claims against
VEGA for shortages or errors in shipment,must occur within 30 days of
receipt of the shipment.
4. Make sure the ON/OFF mechanism is closed and locked.
You must be familiar with radiation safety practices in accordance
with your U.S. AgreementState, U.S. Nuclear Regulatory
Commission, and other local and international nuclear regulatory
agencies before unpacking the source holder.
I f you must return the source holder to VEGA, follow the instructions
in the
Instrument Repair section of the Maintenance and
Diagnostics
chapter.
If you find the operating handle in the ON position, place the
handle in the OFF position immediately and contact your Radiation
Safety Officer or VEGA Nuclear Services.
!
CAUTION
!
NOTE
!
CAUTION

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Mounting
5. Compare the shipment against the packing slip to make certain you
received your complete order.
6. If you are not installing or mounting the source holder immediately, find a
storage area that is isolatedand secure.
7. Allow access to authorized personnel only.
8. Maintain records of the shipping and receipt.
9. While not required, a survey and leak test provide additional assurance that
the source holder is in safe condition.
4.3 Location
At the time you ordered your equipment, VEGA sized the source holder for
optimal performance
for the designated application. If the location of the equipment
has changed or is different from the original
order, notify VEGA before installing
the equipment.
Internal Obstructions
If an internal obstruction such as an agitator or a baffle is directly in the path of
the radiation beam, thatobstruction can shield the radiation from the detector.
Such an obstruction can diminish performance of the equipment.
Low level radiation fields are always present around a source holder.
Locate the source holder where debris or other material cannot coat
it to ensure the continuingproper operation of the source ON/OFF
shutter. Many regulatory agencies, such as your U.S.Agreement
State, the U.S. Nuclear Regulatory Commission, or other local and
international nuclear regulatory agencies, require periodic testing
of the ON/OFF mechanism. See the Radiation Safety Manual for
details about current regulations
.
If your vessel has a central agitator shaft, the source holder and the
detector can mount to thevessel on a chord other than the
diameter. Mounting the source holder and the detector in this
manner allows the beam of radiation to avoid the agitator shaft.
!
NOTE
!
NOTE
!
NOTE