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Guide to Good Practices for Control of Equipment and System Status
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DOE-STD-1039-93
3. DISCUSSION
DOE facilities are required to establish administrative programs to control equipment and system
status. A program for controlling equipment and system status, or status control, must be broad
in scope. It should incorporate measures to ensure awareness by operating personnel concerning
the physical configuration and operating status of equipment and systems. It should contain
methods to maintain system operability in accordance with design requirements. DOE Order
5480.19 addresses several individual programs that comprise portions of the status control
program, including Lockouts and Tagouts (Chapter IX), Independent Verification (Chapter X),
Logkeeping (Chapter XI), and Operations Turnover (Chapter XII). These programs assist in
establishing effective control of equipment and system status and are appropriately referenced
within this guide.
Proper control of equipment and systems requires clear lines of responsibility and authority. The
facility status control program should clearly designate the authority and responsibility for
controlling status to ensure proper configuration. All personnel must understand the importance
of keeping the operations supervisor and other designated operations personnel informed of
activities that could affect the status or operability of equipment.
Effective control of equipment and system status also means coordinating operations and
maintenance activities. Equipment deficiencies must be promptly identified for correction in the
work control system. Locking and tagging should be performed by qualified operations
personnel to ensure that all energy and hazardous material sources are properly isolated, and
required safety functions are not inadvertently disabled. The operations supervisor should sign
the work control documents to authorize the start of all maintenance activities, including testing,
calibration, and related activities. A process for post-maintenance testing should be in place to
ensure that all operation of equipment is controlled by approved operating procedures and that
appropriate maintenance and operations personnel are represented during the testing. The status
or alignment of equipment should be verified as part of restoring the equipment to service
following outages for maintenance or design modifications.
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