Standard Test Method for Determining Nameplate Recovery Rate of Stationary Oil Skimmer Systems

SIGNIFICANCE AND USE
It has been industry practice to claim the capacity of a skimmer based on the rate of the discharge pump (which are typically rated using water as a test fluid) or other arbitrary methods.
End users need a test methodology that evaluates optimum performance data for planning and selection of equipment.
This test method will assist producers and other stakeholders to verify and accurately report skimmer system performance.
This test method is specifically designed to quantify two key skimmer performance values, to reduce testing costs, and to encourage industry wide performance standardization.
This test method establishes test conditions that will result in a measured nameplate recovery rate and an indication of the combination of test parameters (oil type, viscosity, operating speed) that result in the highest average performance for the tested skimmer system.
This test method will validate the performance of the discharge pump in the skimmer system, under conditions that are typical of a recovery operation. Specifically, this will include a modest imposed head pressure composed of static head and dynamic friction losses due to a specified length of discharge hose.
This test method encourages performance testing using two or more oils for comparison purposes.
Tests shall be conducted under well-documented conditions and generate repeatable results. More detailed testing and collection of skimmer performance is covered under existing standards (for example, Guide F 631).
Testing (SL Ross 2007) has shown that, when water is present, recovery performance in slick thicknesses ranging from 50 mm to 75 mm results in values comparable to significantly thicker slicks. This may not be the case with high-rate skimmers in viscous oil, where the rate of oil recovery exceeds the rate at which the slick will flow to the skimmer mechanism.
For skimming systems that include various options for the discharge pump, the test described in this test method may be used...
SCOPE
1.1 This test method defines a method and measurement criteria to quantify the nameplate recovery rate (capacity) of a stationary skimmer system in ideal conditions. If a determination of a skimmer’s capabilities in realistic conditions (that is, advancing or waves) is required, testing should be performed according to Guide F 631 or equivalent.
1.2 This test method includes the option of testing to determine recovery efficiency.
1.3 This test method and parameters are intended to provide ideal recovery conditions allowing the skimmer system to operate and collect oil at its maximum possible recovery rate. Given ideal conditions, inherent mechanical and physical attributes of the system become the limiting factors.
1.4 This test method is intended to identify limitations of the skimmer system, such as performance of the skimming mechanism, the flow of oil within the skimmer and sump, the pump characteristics, and typical discharge head conditions.
1.5 It is accepted that the nameplate recovery rate as determined by this test method will not likely be achievable under actual conditions of a spill. The nameplate recovery rate should be used in conjunction with a de-rating factor to account for such issues as changing encounter rate, changes in other recovery conditions, changes in oil properties and slick thickness, number of daylight hours, operator downtime, less than ideal control of skimmer settings, and inclement weather.
1.6 This test method involves the use of specific test oils that may be considered hazardous materials. It is the responsibility of the user of this test method to procure and abide by necessary permits and regulations for the use and disposal of test oil.
1.7 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. ...

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ASTM F2709-08 - Standard Test Method for Determining Nameplate Recovery Rate of Stationary Oil Skimmer Systems
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: F2709 − 08
StandardTest Method for
Determining Nameplate Recovery Rate of Stationary Oil
1
Skimmer Systems
This standard is issued under the fixed designation F2709; the number immediately following the designation indicates the year of
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. Scope 1.8 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1.1 This test method defines a method and measurement
responsibility of the user of this standard to establish appro-
criteria to quantify the nameplate recovery rate (capacity) of a
priate safety and health practices and determine the applica-
stationary skimmer system in ideal conditions. If a determina-
bility of regulatory limitations prior to use.
tion of a skimmer’s capabilities in realistic conditions (that is,
advancing or waves) is required, testing should be performed
2. Referenced Documents
according to Guide F631 or equivalent.
2
2.1 ASTM Standards:
1.2 This test method includes the option of testing to
D971 Test Method for Interfacial Tension of Oil Against
determine recovery efficiency.
Water by the Ring Method
1.3 This test method and parameters are intended to provide
D1298 Test Method for Density, Relative Density (Specific
ideal recovery conditions allowing the skimmer system to
Gravity), or API Gravity of Crude Petroleum and Liquid
operate and collect oil at its maximum possible recovery rate.
Petroleum Products by Hydrometer Method
Given ideal conditions, inherent mechanical and physical
D2983 Test Method for Low-Temperature Viscosity of Lu-
attributes of the system become the limiting factors.
bricants Measured by Brookfield Viscometer
1.4 Thistestmethodisintendedtoidentifylimitationsofthe D4007 Test Method forWater and Sediment in Crude Oil by
skimmer system, such as performance of the skimming
the Centrifuge Method (Laboratory Procedure)
mechanism, the flow of oil within the skimmer and sump, the F631 Guide for Collecting Skimmer Performance Data in
pump characteristics, and typical discharge head conditions.
Controlled Environments
1.5 It is accepted that the nameplate recovery rate as
3. Terminology
determined by this test method will not likely be achievable
under actual conditions of a spill. The nameplate recovery rate
3.1 Definitions:
shouldbeusedinconjunctionwithade-ratingfactortoaccount
3.1.1 ideal conditions—operating conditions that result in
for such issues as changing encounter rate, changes in other
the maximum nameplate recovery rate of a skimming system
recovery conditions, changes in oil properties and slick
within the limitations of the test method.
thickness, number of daylight hours, operator downtime, less
3.1.2 nameplate recovery rate—the maximum rate at which
than ideal control of skimmer settings, and inclement weather.
the skimmer system can recover and process oil under ideal
1.6 This test method involves the use of specific test oils
conditions.
that may be considered hazardous materials. It is the respon-
3.1.3 oleophilic—oil skimmers that use collection surfaces
sibility of the user of this test method to procure and abide by
for recovery, for example, disc, brush, drum, belt, mop, and so
necessary permits and regulations for the use and disposal of
forth.
test oil.
3.1.4 OSRO—Oil Spill Removal Organization.
1.7 The values stated in SI units are to be regarded as
3.1.5 recovery effıciency—the ratio, expressed as a
standard. No other units of measurement are included in this
percentage, of the volume of oil recovered to the total volume
standard.
of fluids recovered.
1
This test method is under the jurisdiction of ASTM Committee F20 on
2
Hazardous Substances and Oil Spill Response and is the direct responsibility of For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Subcommittee F20.12 on Removal. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved Sept. 15, 2008. Published September 2008. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/F2709-08. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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F2709 − 08
3.1.6 skimmer system—a skimmer and ancillary equipment, 5. Test Facilities
including power supply, hydraulic lines, discharge pump,
5.1 Theminimumlateraldimensionsofthetesttankshallbe
suction/discharge hoses, and control apparatus.
three times the length and width of the skimmer device, that is,
if the skimmer has a dimension of 1 by 1 m, the test area sha
...

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