ASTM_F_2465_-_F_2465M_-_05_2016.pdf

Designation:F2465/F2465M05(Reapproved 2016)Standard Guide forOil Spill Dispersant Application Equipment:Single-pointSpray Systems1This standard is issued under the fixed designation F2465/F2465M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This guide covers performance criteria,requirements,material characteristics,and essential features for oil spilldispersant application systems.This guide is not intended to berestrictive to a specific configuration.1.2 This guide covers vessel-based spray systems employ-ing single-point spray nozzles,including designs that havebeen based on or evolved from“fire-monitor”systems,and isnot fully applicable to other systems such as spray boom/nozzle or aircraft systems.1.3 This guide is one of five related to dispersant applicationsystems.The other four guides cover the design of boom andnozzle systems,spray system calibration,spray depositionmeasurements,and use of the systems.Familiarity with all fiveguides(listed in 2.1)is recommended.1.4 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2F1737 Guide for Use of Oil Spill Dispersant ApplicationEquipment During Spill Response:Boom and NozzleSystemsF1738 Test Method for Determination of Deposition ofAerially Applied Oil Spill Dispersants3.Equipment Description3.1 General“Single-point”oil spill dispersant spray sys-tems include spray nozzles,some of which may be similar tothose used in firefighting,that generate a spray pattern directedout from a location on the side of the vessel without the needfor an outrigger boom or spray arm system to support the spraynozzle.The system includes a pumping or pressure system todeliver dispersants to the nozzle(s)or device used to spray thedispersant out onto the oil slick,and associated piping andcontrol valves.All systems shall include flow meters andpressure gauges to monitor the dispersant discharge.Allsystems shall be equipped with provision for cleaning anddrainage.System components shall be designed to give auniform droplet spray and volumetric coverage as described inthis guide.NOTE1Nozzles used in firefighting applications are generally de-signed to direct a large quantity of water or firefighting foam,or both,toa small area or fire hot spot.As such,many standard firefighting nozzlesare not suitable for effective application of dispersant.Some firefightingnozzles have variable spray pattern adjustment and flow control and thesemay be suitable for dispersant application.Some foam application nozzleshave been designed to generate uniform,volumetric fallout along thelength of their spray pattern and these have potential for dispersantapplication.Nozzles specifically designed for use in single-point disper-sant application systems are also available.3.2 Modes of OperationTypical operational modes couldinclude two nozzles,one mounted on the port deck rail and theother on the starboard deck rail,both located towards the bowof the vessel.The nozzles are supplied dispersant from either acommon or separate pumps and are plumbed to permit inde-pendent operation and flow control.The nozzles spray disper-sant out from the side of the vessel perpendicular to thedirection of the vessels movement and treat oil on each side ofthe vessel in the zone free of the influence of the vessels bowwave as it moves through the slick.This type of operation isonly effective in light winds.3.2.1 In moderate to high wind conditions the vessel wouldtravel in a cross-wind direction,and dispersant would besprayed downwind,only from the nozzle mounted on thedownwind side of the vessel.If nozzles were mounted on bothsides of the vessels only the downwind of the two nozzles1This guide is under the jurisdiction of ASTM Committee F20 on HazardousSubstances and Oil Spill Response and is the direct responsibility of SubcommitteeF20.13 on Treatment.Current edition approved Feb.1,2016.Published March 2016.Originallyapproved in 2005.Last previous edition approved in 2011 as F2465/F2465M 05(2011)1.DOI:10.1520/F2465_F2465M-05R16.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to