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Slide1: 

Air Force Fuels Quality Update Technical Division Aerospace Fuels Directorate USAF 3 NOV 98 DESC QUALITY DAY

OVERVIEW: 

OVERVIEW Mission Sheppard AFB Charleston AFB Receipt Filtration Tank truck off-loading

QUALITY CONTROL WORLDWIDE: 

QUALITY CONTROL WORLDWIDE

MISSION: 

MISSION PROVIDE WORLDWIDE LOGISTICAL SUPPORT TO THE AIR FORCE TO ASSURE “COMBAT READINESS” OF OUR OPERATIONAL FORCES

Slide5: 

Sheppard AFB Hot JP-8 receipts (High concentration of SDA) were not detected until fuel reached aircraft JP-8+100 not the culprit High Conductivity stratified in JP-8 operating tanks Problem complicated by minimum fuel inventories (2.5’ level @ time of re-supply) High Conductivity reported @ other locations: i.e. Mountain Home AFB, & Ellington ANGB

Sheppard AFB Background: 

Sheppard AFB Background Fuel receipts Multiple suppliers (Hess, Williams Bros, Pride) Tank truck receipts Daily demand averages 125K gallons Trend Western Contractor fuels operator QC by T.O.42B-1-1 Sample each delivery source daily analyze for FSII, SDA, solids, filtration time & flash point Sample receipt tank every 14 days Sample refueling units (all units every 30 days) Sample fillstands every 7 days

Sheppard AFB Background: 

Sheppard AFB Background Fuel Storage System Three 600K storage tanks #32, #33, & #34 Tk #32 inactive but used to defuel 143K from A/C Tank #32 143K gls Hi CU +100 Tank #33 270K gls Hi CU JP8 Tank #34 492 pS/m

Slide8: 

1st indication of a problem T-38 fuel quantity indicator gauges “rolling” Fuel on A/C tested >2000 pS/m (spec 150 - 600) 400Hz gauges sensitive to high conductivity A/C grounded A/C defueled (143K gals), +100 suspected T-37 unaffected Preliminary results reported by Sheppard Tank truck receipt results at 340 pS/m Upstream of +100 injector at 700 pS/m Downstream of +100 injector at 1100 pS/m A/C samples >2000 pS/m Sheppard AFB Background

Sheppard AFB Investigation : 

Sheppard AFB Investigation SFTH POL Tech Team Dispatched 16 Jul 98 TK #33 (issue) tested at >2000 PS/M at the top and middle and 1700 PS/M at the bottom TK #33 immediately placed on QC hold TK #34 tested at top, middle, & bottom and the results were 494, 493, 490 PS/M respectively TK #34 on spec and designated as the issue tank Tank #32 Defueled +100 will clean rust & dirt from tank Rust & dirt may contaminate fuel Inactive status exacerbates problem

Sheppard AFBResults: 

Sheppard AFB Results Tank #34 now receipt & issue tank DER-A requested to supply fuel w/o SDA Hess now the sole source supplier Delivering 30 trucks a day fuel w/o SDA Tank #33 was >2000 pS/m after receiving 182K fuel w/o SDA (492K gls high CU) Tank #34 now down to 90 pS/m Tank #32 reissued to A/C thru Pall F/S Tank #33 transfer to Tk #32 for dilution

Slide11: 

Summary JP-8+100 was not the culprit Sheppard only +100 AETC base with high conductivity problem Only Tank #33 contains high conductivity After dilution (.58:1) SDA still >2000 pS/m Tank #33 ullage probably not adequate to bring back on specification Tank #32 delivered to A/C T-37’s 400 Hz Honeywell not affected (T-38’s 400 Hz Simmons Precision) Fly without +100 and SDA until all fuel is back on specificaton

Sheppard AFBRecommendations: 

Sheppard AFB Recommendations Trend Western to increase quality surveillance on receipt Request DER-A to limit maximum level of conductivity injection to 450 pS/m Request DER-A to investigate source of high SDA and apply corrective measures DESC/SERVICES/JCS AF reevaluate Inventory Policies

Charleston AFB SC: 

Charleston AFB SC Apr 98 - high PC, Four receipt filter/separator element change-outs Migrated to the flight Line Six hydrant hose trucks shutdown at the aircraft Aug 98 - high PC, AMC directed to receive high PC fuel (12 mg/gal) To be cleaned up by filters

Charleston AFB SC: 

Charleston AFB SC 30 Sep 98 - high water, pc and 25 min filtration, Failed visual solids upstream of F/S @ 1 hour after pipeline start Passed all tests downstream of F/S @ 1 hour after pipeline start Six hours after pipeline start visual water dP exceeded limit system shut down to replace elements New elements saturated with water only after 6 hours

Slide15: 

Charleston AFB SC Recommendations Base continues to monitor receipts closely Installation of filtration at DESP

Slide16: 

FUEL QUALITY API 1581- Commercial Standard for Jet Fuel Filtration

Slide17: 

RECEIPT FILTRATION No receipt filtration capability @ Gov’t DFSPs Limited discharge filtration We are providing USAF prioritized rqmt for receipt filtration at Air Bases 15 problem locations identified DD Form 1391s from MAJCOM in progress

Slide18: 

TANK TRUCK OFF-LOADS Fuel remaining in trucks Visi gauges not available everywhere Is there anyway to encourage use of the visi gauge by carriers?

SUMMARY: 

SUMMARY