EDRC Update

John CaplisBSEE Oil Spill Response Division

SCAA Annual Meeting

Progress Report

EDRC Workshop @ International Oil Spill Conference May 2011Genwest Study completed Dec 2012National Academy of Science Peer Review completed Nov 2013

System-based Recovery

& Encounter Rate Enhanced

Swath

Skimmer, Pump & Storage

Open Apex

Secondary Backup” Storage

Nominal “THICK” Oil

Thicknesses After 12 hours

(mid-day 1)2.5 mm

After 36 hours

(mid-day 2)1.0mm

After 60 hours

(mid-day 3)0.6 mm

Oil Encounter RateDay 1

(bbl/hr)Day 2

(bbl/hr)Day 3

(bbl/hr)

System Areal Coverage Rate = ƒ (swath, speed, skimming time )

Estimated Recovery System Potential

(For each day’s Operating Window)

Day 1 (bbl)

Day 2 (bbl) Day 3 (bbl)

System Recovery = ƒ (RE, TE, NPRR, Pump Rates, etc)

ERSP System Variables

Concentrate &Collect Oil Recover Oil

Store Oil(on Skimmer)

Transit &Transfer Oil

• System Swath & Speed• Oil Thickness• % Emulsion

• Nameplate Recovery Rate• Recovery Efficiency• Throughput Efficiency

• Onboard Storage• % Decant• Decant Pump Rate

• Transit Time• Rig/Derig Time• Discharge Pump Rate

ERSP Calculator

NAS Peer Review

ERSP Methodology soundUse ASTM 2709-08 for Nameplate RatesConsider different planning scenariosConsider patchiness of thick oilDevelop more detailed user guideConsider all response options

ERSP Strengths

Incentives for better performanceLooks at whole systemFactors in encounter rate issuesEmphasizes rapid responseWell suited for offshore equipment

ERSP Challenges

Assumes best practices for oil spottingGuidance needed on input valuesMobilization & transit to spill not included Maneuverability not factored inNearshore requirements not addressedNot suited for inland environment

ERSP Beta Testing

OSRB (Barge)

Koseq Arms

OSRV

OSRV95 ‘ OSRV

Shallow Water Barge

Shallow Water Barge

46 ‘ OSRVVOSS Unit

OSRB (Barge)

ERSP Next Steps

Continue beta testing dialogue with industryAddress NAS Report Recommendations OSRP Equipment Requirements StudyPossible Public Workshop once Study is completed

Websites: www.bsee.gov

www.genwest.com/edrcproject www.nap.edu/catalog.php?record_id=18579