Normal Operations - std30240034

DOE-STD-3024-98

4.2.2 System Startup

4.2.4 Off-Normal Operations

This section shall summarize the key steps in the

This subsection shall identify off-normal conditions

startup procedure and refer to the corresponding

for which the system is intended to operate. Off-

procedure.

normal events range from simple, ordinary events

such as the failure of a particular component, to

Particular attention should be drawn to the startup

anticipated system upsets (such as loss of cooling or

sequence, any timing that is involved, and how it is

lubrication, excessive leakage, or high radiation

determined that the system is ready for the next step.

levels), to unlikely events such as a fire, explosion,

Finally, this section should describe how to

or earthquake. For each off-normal event, this

determine if the system was started up successfully

section should identify how the upset would be

or unsuccessfully.

detected, describe the impact of the event on

functional capability of the system (and to the extent

appropriate, the impact on the facility).

4.2.3 Normal Operations

This section shall identify all the normal operating

This section should briefly summarize the recovery

modes of the system, describe when each mode is

actions for each type of off-normal condition. Some

appropriate, and generally how mode changes are

facilities use what are called "Alarm Response

accomplished. A reference shall be provided to the

Procedures" that define pre-planned, reviewed, and

procedures that cover system operations, including

approved actions that operators are to take when

operational mode changes, to the extent that such

particular alarms are activated. Typically, such

procedures exist. A footnote that refers to a

procedures will identify each important alarm that

particular referenced item in the appropriate

requires action, describe what conditions will cause

appendix to the SDD may be convenient. This

that alarm to activate, define those few immediate

section should then focus on and describe the most

operator actions, and then define those less urgent

frequently used mode of operations, including

follow-up actions that are appropriate to that alarm.

routine checks on system performance and

This section should provide a reference to the

performance data logging that are performed by the

appropriate documents for recovery actions.

operations staff to verify that the system is operating

normally, including the key parameters and their

4.2.5 System Shutdown

nominal values.

Those surveillance actions

preformed by maintenance staff should be identified

If it is necessary to shut down the system in a

in Section 4.3.

particular sequence or with special timing, those

system shutdown actions shall be summarized and a

This section should also identify the types of

reference to the corresponding procedure provided.

automatic records or logs that are maintained by or

for the system in the central control area, including

4.2.6 Safety Management Programs and

any equipment status changes that are "alarmed"

Administrative Controls

during normal operations.

This subsection shall identify the aspects of safety

This section should also briefly address Conduct of

management programs that apply to the system

Operations as it applies to this particular system.

being described. This discussion should focus on

For example, at shift turnover, certain types of

the unique aspects of the application of those

information about how this system is functioning

programs (such as radiation control and

might be appropriate or required. Then a reference

configuration management) and simply reference the

should be provided to the specific procedure that

general programs that apply to many systems at the

provides the details for these aspects of the

facility.

operation of the system.

This section should identify administrative controls

placed on the System and/or its operation, and

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