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Policies and SI313JEC'P PAGE Procedures Stockton Hazardous Work Policy 4 of 15 immediate work area,the work should be considered a level two hazard. Intermediate bleed valves, installed in conjunction with single block valve arrangements, should be used wherever available to control the venting, draining, and inert purging of affected process piping. Work on natural gas or other fuel-based process piping systems are also defined as a level two hazard. Penetration into the process pressure boundary of fuel-based systems requires inert purging through the affected work area using sufficient equivalent of volumetric changes. A job planning meeting must be conducted to review hazards and precautions prior to permit authorization for all level two permits. Level 3 Hazardous Work Definition—Any time that a hot work permit is required in conjunction with a hazardous work permit the work is considered to be level three. Any work on HTF systems when the temperature of the line or the temperature of the fluid anywhere in the system is above 140 F requires a level three permit. A job planning meeting must be conducted to review hazards and precautions prior to permit authorization. E. A hazardous work permit shall only be issued and authorized when the work area meets the following requirements: 1. Hazardous work will not be permitted at the same time in areas where hot work is authorized for other work within 50 ft. of the hazardous work site(including overhead). 2. Hot work in conjunction with a hazardous work permit can only be completed with the approval of the Plant Manager or Engineering Manager. Welding or cutting shall only be permitted on drained sections of the process system after inspection by the Engineering or Plant Manger. All exceptions must be approved by the location Plant Manager. He shall show his approval by initialing the hazardous work permit. All exceptions shall be shown under "Special Precautions and Limitations" on the hazardous work permit form. 3. No spark-producing grinding,cutting, or other work activities which create ignition sources will be permitted within 50 ft. of the hazardous work site that is not already approved as part of the Hazardous Work permit(level 3). 4. No hazardous work is allowed in an area where the sprinkler system is out of service. The Engineering Manager or Plant Manager may authorize exceptions to this after taking the necessary precautions. 5. The section of the process system to be opened shall be made safe by positive isolation from the flow of material. Isolation is to be provided by: (1) first closing, locking. and taasina the anpronriate block valves both upstream and downstream of the point of opening; and(2)locking open the appropriate drain valve in the three-way valve system (where applicable), or(3) inserting blinds rated for full line pressure with tags at the pipe flanges.