SAP

Migration

SAP Migration

Super

Absorbent

Polymer

Used for the manufacturing fuel filters designed to remove particulate and free water, i.e.CDF

IP/EI warning Oct 06

WARNING ON USE OF AVIATION FUEL FILTER MONITORS (FUSES) ‘QUALIFIED TO’ IP 15831 4TH EDITION OR EARLIER EDITIONS

FILTER MONITORS ‘QUALIFIED TO’ IP 1583 4TH EDITION OR EARLIER EDITIONS CANNOT BE REGARDED AS FAIL-SAFE DEVICES FOR PREVENTING WATER BEING DELIVERED TO AIRCRAFT

IT HAS ALSO BECOME APPARENT THAT WATER ABSORBENT POLYMER FROM SUCH ELEMENTS MAY MIGRATE DOWNSTREAM AND CONTAMINATE AIRCRAFT FUEL SYSTEMS

CF Risk Assessment

• Risk assessment procedure and Record of Airworthiness Risk Management (RARM) initiated in July 2007 and approved by DGAEPM/DTAES in 2008,

•  Outcome of RARM judged the situation as low risk and low probability based on current CF fuel handling procedures,

• Emphasized good fuel practice and elimination of free water from fuelling systems and equipment,

• Replace filter cartridge containing SAP media (CDF/Aquacon™) with a filter elements without polymer material,

• This recommendation affects fixed fuel infrastructure, mobile equipment and portable filtration systems.

INLETINLET

OUTLETOUTLET

22ndnd STAGE STAGE SEPARATORSSEPARATORS

COALESCERSCOALESCERS

OPTIONAL 3OPTIONAL 3RDRD STAGE STAGE MONITORSMONITORS

API/IP 1581 5th Edition Three Stage Vessel

API/IP 1581 5th Edition Vessel with 3rd

stage monitors – A horizontal version of

this vessel is in use at Port Authority of

NY & NJ & with DND in Canada

Velcon’s

• CDF®-2xxK* • CDF®-2xxKR*• CDF®-2xxN

IP 1583 4th Edition Cartridges

• ACO-6xx01L• ACI-6xx01L

*Please note – as of December 2006, N-Series cartridges will replace K-Series cartridges.

Water Absorbing Monitor (CDF)

These filter elements used in filtration systems contain a polymer incompatible when exposed to water/FSII additive

Cause of Contamination

Monitors SAP + FSII/water may create gel-like substance

*****CAUTION***** In fuels containing anti-icing additive (Di-EGME, FSII,

Prist®), stagnant water bottoms can absorb large amounts of the anti-icing additive. This water/FSII solution can

disarm water-absorbing elements allowing water to pass downstream *Velcon

SAP Contamination

Recommendation

- FOW to replace CDF in all filter vessels used in mobile and fixed infrastructure equipment,

- Qualification Testing for RT (18000 L) vessel conducted at Velcon in July 2008

Recommendation

Good Housekeeping is essential

1. Drain vessel daily to remove water, 2. Change out of filter elements at 15 psid or when time expired,3. Inject anti-icing additives after filtration whenever possible if using CDF cartridges.

TRT w/AQUACON™

TRT - Proposed

• Change from Aquacon™ to two stage filter vessel, I.e. Coalescer/Separator,

• Retrofit current filter vessels on TRT or replace them,• Current vessel would be Flow Rate limited to 65-70

gpm,• 1 Wing HQ and DSVPM need to conduct trials to

determine way forward,• ETB December 2008.