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Policies and SUBJECT PAGE Procedures I Stockton Hazardous Work Policy 14 of 15 closing of the permit. Issues identified in the review will be addressed and communicated to the plant manager and employees. C. Hazardous work permits shall be retained for a minimum period of year. XI. HTF SYSTEM OUTAGE Circulating and maintaining the temperature of the Heat Transfer Fluid is critical to plant operations. At times it may be necessary to take the system out of operation for a planned outage or an unplanned event such as a power outage, gas supply problem, leak in the system, or process control problems, etc. A. Planned Outages Any time that there is a scheduled shutdown for planned maintenance or improvements to the system a planning meeting must be conducted to review the work to be performed,identify potential hazards and determine required precautions to complete the work safely. The scope of work is to be clearly defined and agreed to by maintenance, engineering,production, and process engineering. This scope is to include but is not limited to a description of the work, safety requirements,parts and tools needed,preparation work,effects on other plant areas, outside resources, vendors, and a back up plan to deal with unforeseen problems. A listing of any permits that are required should be developed in advance so that completion of permits at the job site prior to work beginning can be efficiently done.. A schedule of events is required. This schedule must show the person responsible, manpower requirements,progress checkpoints, and relationship of this work to other jobs in the plant. The HTF system should not be out of service for more than three hours without a plan to monitor system temperature, and component conditions. Any work beyond three hours must be planned so that the system can be put back into service at any half-hour interval. Supervision must be provided with an hourly update, so a decision can be made to continue or stop work. B. Unplanned Outages In the event of an unplanned outage where maintenance work must be completed to restore circulation of the HTF system, the level of the permit work required to be complete to must be determined. In the event that level 2 or level 3 hazards will be encountered,proper approvals for hazardous work permits must be acquired before the work can be initiated. Emergency situations can not preempt the hazardous work permit procedures. In an emergency situation where management is not immediately available on site, they must be contacted for verbal authorization prior to level 2 or level 3 hazardous works being initiated.