"CLOSED TO TRAFFIC," “KEEP FLAMES AWAY," "MEN WORKING,” "NO SMOKING,” "DANGER NO OPEN FLAME OR IGNITION SOURCE BEYOND THIS POINT.” Use bilingual signs when appropriate. FILTRATION Pre-Filter Vessels (Section 3-6.1) Open drains under flow conditions Daily OM OM OM until clear fuel is observed from the drain valve. Monitor differential pressure in filter cartridges. Chart differential pressure measurements from readings taken during normal operations. Operate pre-filter isolation valves. Quarterly SM SM SM Replace filter cartridges when the When differential SM SM SM pressure has acceptable maximum differential reached the pressure is reached, the maximum lower of in-service duration has passed, or Pre-Filter manufacturer’s Vessels the fuel becomes visibly dirty or recommendation discolored. Acceptable maximum or 20 psid (140 differential pressure for a specific kPa), filter pre-filter is dependent on the cartridge system flow rate. The Military service period of Service-specific SCP may extend 24 months has in-service duration filter cartridge expired, or when fuel becomes replacement period based on visibly dirty or differential pressure for high discolored. throughput systems. Check expiration date of replacement filter cartridges before installation. Refer to for inspection and As required SM SM SM maintenance requirements of differential pressure gauges.
"CLOSED TO TRAFFIC," “KEEP FLAMES AWAY," "MEN WORKING,” "NO SMOKING,” "DANGER NO OPEN FLAME OR IGNITION SOURCE BEYOND THIS POINT.” Use bilingual signs when appropriate. FILTRATION Pre-Filter Vessels (Section 3-6.1) Pre-Filter Vessels Open drains under flow conditions until clear fuel is observed from the drain valve. Monitor differential pressure in filter cartridges. Chart differential pressure measurements from readings taken during normal operations. Daily OM OM OM Operate pre-filter isolation valves. Quarterly SM SM SM Replace filter cartridges when the acceptable maximum differential pressure is reached, the maximum in-service duration has passed, or the fuel becomes visibly dirty or discolored. Acceptable maximum differential pressure for a specific pre-filter is dependent on the system flow rate. The Military Service-specific SCP may extend in-service duration filter cartridge replacement period based on differential pressure for high throughput systems. Check expiration date of replacement filter cartridges before installation. When differential pressure has reached the lower of manufacturer’s recommendation or 20 psid (140 kPa), filter cartridge period of 24 months has expired, or when fuel becomes visibly dirty or discolored. SM SM SM Refer to for inspection and maintenance requirements of differential pressure gauges. As required SM SM SM service
ufc_3_460_03_appendix_c.docx