OPERATIONAL ADVICE NOTICE (OAN)
OAN 097-2020 - AIRCRAFT FUEL HYDRANT VALVE CHAMBER WORKS.
OAN REF:‐ 097/2020 DATE OF ISSUE:‐ 15/12/20 EFFECTIVE DATE:‐ 11/01/21 EXPIRY DATE:‐ 02/02/21
PLEASE ENSURE THIS INFORMATION IS PROMULGATED TO ALL STAFF
1.0 SUMMARY
A circa four‐week programme of work to install new pipework into three aircraft fuel hydrant valve
chambers and to soak test and flush out the associated section of the fuel hydrant system pipework.
2.0 PROGRAMME
2.1 Overall, the work will commence on the Monday 11th January and will be completed by Tuesday 2nd
February 2021.
2.2 Daily working hours will be 07:30 to 19:00L.
3.0 SCOPE & LOCATION OF WORKS
3.1 The scope of work will involve the following tasks:
Access to aircraft fuel valve chambers (VC) and features.
Access to fuel vent (V11) located on Taxiway Echo abeam Stand 72.
Hydrant cleaning between VC5 and VC7.
Pipework installation in VC5, VC6 and VC7.
Flood up and soak hydrant between VC5 and VC7.
Opening the valves in the new section of the hydrant system to flush fuel through.
3.2 The work will be located on Stands 72, 807‐811 and the apron road system opposite Stand 104.
4.0 OPERATIONAL IMPLICATIONS
4.1 Aircraft Fuel Hydrant System
4.1.1 The Terminal 2 aircraft fuel hydrant system will remain depressurised during these works due to the
ongoing consolidation of aircraft operations into Terminal 1. However, the section of hydrant system directly
affected by the valve chamber works can be isolated to facilitate re‐pressurisation of the Terminal 2 system, if necessary.
4.1.2 The section of the aircraft fuel hydrant system serving Terminals 1 and 3 will be unaffected by this work.
4.2 Stand Restrictions
4.2.1 Any Terminal 2 cargo operations requiring aircraft fuelling will be parked on stands fed by the Terminal
1 fuel hydrant system.
4.2.2 Access will be required to aircraft fuel hydrant valve chambers located on Stands 72, 807 and 811.
4.2.2.1 The above stands will be closed whilst work is in progress, however any aircraft already parked on stand
may remain in‐situ.
4.2.2.2 If the stands are required for aircraft parking, aircraft must be manoeuvred onto stand prior to the start
of works and must remain on stand until the completion of works each day.
4.3 Apron Road Restrictions
4.3.1 Active traffic management will be in place whilst work takes place within the aircraft fuel hydrant valve
chamber (VC5) located in the apron road system opposite Stand 104.
5.0 LOW VISIBILITY PROCEDURES (LVP)
5.1 The work will have no effect on the airport’s ability to operate during periods of low visibility.
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