ASTM F933-85(1994)e1

e1
Designation: F 933 – 85 (Reapproved 1994)
Standard Guide for
Evaluation of Oil Water Separation Systems for Spilled Oil
Recovery Applications
This standard is issued under the fixed designation F 933; 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 (e) indicates an editorial change since the last revision or reapproval.
e NOTE—Section 9 was added editorially in September 1994.
1. Scope are included in this guide to evaluate the separation system’s
performance with heavy contaminated oils as well as other oils.
1.1 This guide applies to the evaluation of oil–water sepa-
4.2 It is desirable that separation systems used for recovery
ration systems when employed as devices for dewatering oil
operations be of the lowest possible volume and weight. The
collected by oil-recovery devices or systems, or both.
primary performance objective of the separation system for
1.2 This standard does not purport to address all of the
spilled oil recovery is to reduce the volume of recovered liquid
safety concerns, if any, associated with its use. It is the
that must be stored by removing as much water as possible. A
responsibility of the user of this standard to establish appro-
secondary objective is to remove as much oil as possible from
priate safety and health practices and determine the applica-
the discharged water.
bility of regulatory limitations prior to use.
4.3 The flow rate for the test should be based on the
2. Referenced Documents
manufacturer’s rated total throughput for the system.
4.4 The effects of the motions of the platform on which the
2.1 ASTM Standards:
separator would be located during oil spill clean-up operations
D 1744 Test Method for Water in Liquid Petroleum Prod-
are not addressed in this guide. Footnotes 4, 5, and 6 contain
ucts by Karl Fischer Reagent
information on simulating and testing for the effects of ships
2.2 APHA Standard:
, ,
4 5 6
motions on oil water systems.
Methods for Examination of Water and Wastewater,
1980 edition
5. Test Facilities
3. Summary of Guide 5.1 The test may be conducted at any test facility including
the manufacturer’s own test facility.
3.1 The tests allow evaluation of the system’s ability to
5.2 The test facility should have the capability of adding an
handle high-viscosity oils when contaminated by ice or debris,
amount of debris to the influent flow and of varying the mixture
or both, and measure the separation efficiency of the system
from 100 % oil and the total flow from zero to 125 % capacity.
with various types of oils under varying oil concentrations and
5.3 When effluent of 250 ppm oil or less is desired, use Type
separator flow rates.
A separation systems. The test facility should have the capa-
3.2 Separation systems are categorized as either Type A or
bility of producing a mixture of test oil and water where at least
Type B. Type A separation systems are those intended to
20 % of the dispersed oil, when measured by a sample taken
produce a water effluent with less than 250 ppm of entrained
from the influent line to the system is of 50-μm droplet size or
oil. Type B separation systems are those intended to reduce the
smaller.
volume of recovered water with no specific entrainment
objective.
6. Test Oil and Debris
4. Significance and Use
6.1 The test oils may be crudes, refined, or synthetics.
Record type, specific gravity, viscosity, and temperature of
4.1 Existing regulations do not require certified oil water
each oil together with the mixture percentages and tempera-
separators to handle the high-viscosity oils and various con-
tures for each test point.
taminants often encountered when recovering spilled oil. Tests
“Testing of A.P.I. Separator Under Simulated Sea Conditions,” Fisheries and
This guide is under the jurisdiction of ASTM Committee F-20 on Hazardous
Enviroment Canada Final Report, September 1979.
Substances and Oil Spill Responseand is the direct responsibility of Subcommittee
“Recommendation on International Performance and Test Specifications for
F20.12 on Removal. Oily Water Separating Equipment and Oil Content Monitors,” Inter-Governmental
Current edition approved June 28, 1985. Published May 1986. Maritime Consultative Organization, London 1978.
2 6
Annual Book of ASTM Standards, Vol 05.01. U.S. Coast Guard Regulations 46CFR Part 162, “Engineering Equipment:
Available from the American Public Health Association, 1015 15th St. NW, Design and Approval Requirements for Oil Pollution Prevention Equipment,”
Washington, DC 20005. Federal Register, Sept. 13, 1979.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
F 933
6.2 The debris for the test should be the equivalent of sea alone as in 7.1. A test oil equivalent to crude oil is added to the
weed, sea grass, or hay after it has been passed through a influent at a rate equal to 5 % of the rated capacity of the
centrifugal pump or similar maceration device to simulate separator. For Type A separator tests, the influent oil should be
passage through an oil-collection device. Record the type and provided with the particle size and distribution described in
physical nature of the debris together with the amount, both 5.3. The test is continued at 5 % oil and 95 % water for 10 min.
volume and weight, added at each test condition. The oil content is then gradually increased over 5 min to 25 %
6.3 If the separator is intended for use in arctic regions or and continued at 25 % oil for 10 min. The oil content is then
areas where ice is frequently encountered in spill clean-up again gradually increased over 5 min to 100 % and continued
operations, the test should be conducted using water at or near at 100 % oil for 5 min. The oil flow is then stopped and the
0°C, and ice in small chunk form should be added to the separator is run on 100 % water for 15 min.
influent water. Record the water temperature and the amount
7.2.2 The water flow is then reduced to 75 % of the
and mean size of the ice chunks added to each t
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