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6420
Appendix T2 Operational
Safety Procedure Development for Qualifying Static Magnetic Fields |
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When a Task Hazard
Analysis indicates that a specialty magnets poses an unmitigated Risk Code>2
a work control
document (WCD) is required to
ensure hazard
issues are
addressed and appropriately mitigated. This appendix provides the requirements
for this WCD.
This
procedure provides the minimum safety requirements for specialized magnets with
the potential power of:
·
2T
(20,000 Gauss) or more, or
·
0.5
mT (5 Gauss) under certain conditions
It
does not preclude the need to incorporate additional mitigation to ensure the
safety of people, equipment, and the environment from associated activities.
The process steps for this procedure are performed in coordination with ES&H Manual Chapter 6420 Non-Ionizing Radiant Energy (i.e.: Radio Frequency (RF), Microwave, and Electro/Static Magnetic); and ES&H Manual Chapter 3310 Operational Safety Procedure Program.
NOTE: Management authority may be delegated to a task qualified Jefferson Lab employee at the discretion of the responsible manager.
· Complete a Work Control Document for magnets under your authority that have been determined to be a Risk Code >2.
Unless otherwise stated the Magnet Owner performs the following process steps.
·
Use ES&H
Manual Chapter 3210 Appendix T1 Task Hazard Analysis (THA) Worksheet to outline the task steps or
services required for the area/equipment.
·
Identify known and potentially
hazards conditions, suspected causes, and environmental concerns.
·
Identify required Safety
Procedures/Practices/Controls/Training.
Step 2: Operational Safety Procedure (OSP)
· Use ES&H Manual Chapter 3310 Operational Safety Procedure Program to develop an OSP to document the hazard issues and mitigation requirements associated with magnets.
· The following additional information is required to be addressed prior to review and approval of the document.
Personnel |
· Medical
requirements · Incidental
worker requirements |
Magnetic Device
Inventory |
· Specifications · Define all
components |
Magnet
Environment |
· Exclusion zone
for electronic equipment · Magnetic field
survey and map · Ferromagnetic
tool or equipment (e.g. crane, JLG) hazard area · Optical systems |
Superconducting Magnets: · Cryogenic
equipment |
|
Procedures |
· Normal use · Ferromagnetic
object/tool sweep · Maintenance procedures · Off-normal and
emergency procedures (i.e. quench) · LO/TO procedures |
Controls |
· Protective
circuitry (quench) · Grounding/Ground-fault
circuit-interrupter (GFCI) · Lead covers · Barricades · Warning signs · Beacons |
Vacuum Systems · Window
protection |
|
Superconducting Magnets: · Pressure relief · Ventilation · ODH assessment · Quench protection |
Step 3:
Complete the OSP Document
·
Complete
the process steps as outlined within ES&H Manual Chapter
3310 Appendix T1 Operational Safety Procedure (OSP) and Temporary OSP Procedure
for validation, approval, recordkeeping and implementation.
5.0
Revision Summary
Revision 1.1 01/22/18 Updated to align with the updated Worker Safety & Health Plan
Periodic Review 04/18/16 No changes per TPOC
Revision 1.0 07/16/12 Updated to
reflect current laboratory operations
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ISSUING
AUTHORITY |
TECHNICAL POINT-OF-CONTACT |
APPROVAL
DATE |
REVIEW DATE |
REV. |
|
|
ESH&Q Division |
01/22/18 |
01/22/23 |
1.1 |
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