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(c) Test No. 28. Test No. 1S is repeated using an influent containing approximately 25 percent oil and 75 percent water.

(d) Test No. 3S. The separator is fed with oil until oil is discharged at the oil discharge outlet of the separator at essentially the same rate that oil is being fed to the separator. The separator is then fed with oil for five (5) additional minutes. If any oily mixture is discharged from the separated water outlet on the separator during the test, that observation is recorded.

(e) Test No. 4S. The separator is fed with water for fifteen (15) minutes. Samples of the separated water effluent are taken at the beginning of the test and after the first ten (10) minutes.

(f) Test No. 5S. The separator is operated automatically for three (3) hours. During the test, the separator is continuously fed with an influent varying from water to a mixture of 25 percent oil in water and back to water every fifteen (15) minutes. The oil concentration in the influent is varied in at least five (5) equal increments during each fifteen (15) minute period and the time intervals between the incremental changes are equal. During the last hour, the separator must be inclined at an angle of 22.5° with the plane of its normal operating position. During the last time increment in which the unit is fed a 25 percent oil mixture, a sample of the separated water effluent is taken. If the separator stops at any time during this test, that observation is recorded.

(g) Test No. 69. Tests No. 1S and No. 2S are repeated using, in lieu of a heavy fuel oil in the influent, a light distillate fuel oil having a relative density of approximately 0.83 at 15 °C.

(c) The electrical components of a monitor that are to be installed in an explosive atmosphere must be approved by an independent laboratory as components that Underwriters Laboratories Standard 913 (dated April 8, 1976) defines as intrinsically safe for use in a Class I, Group D hazardous location.

(d) Each monitor component that is a moving part must be designed so that its movement during operation of the monitor does not cause formation of static electricity.

(e) A monitor must be designed to operate in each plane that forms an angle of 22.5° with the plane of its normal operating position.

(f) Each monitor must be designed in accordance with the applicable requirements contained in subchapters F and J of this chapter.

(g) Each monitor must be designed so that it records each change in oil content of the mixture it is measuring within twenty (20) seconds after the change occurs.

(h) Each monitor must have a device that produces a warning signal and a signal that can be used to actuate valves in a vessel's fixed piping system, when

(1) The oil content of the mixture being measured exceeds the concentration limit set by the operator of the monitor; and

(2) Malfunction, breakdown, or other failure of the monitor occurs.

(i) Each monitor must have a means to determine whether it is accurately calibrated. [44 FR 53359, Sept. 13. 1079, as amended by CGD 76–088C, 48 FR 45727, Oct. 6, 1983)

$ 162.050–25 Cargo monitor: Design

specification. (a) This section contains requirements that apply to cargo monitors.

(b) Each monitor must be designed so that it is calibrated by a means that does not involve manually mixing a known quantity of oil and a known quantity of water to form a mixture and manually feeding the mixture into the monitor.

$ 162.050-27 Cargo monitor: Approval

tests. (a) This section contains requirements that apply to cargo monitors.

(b) Test conditions. (1) The tests and each step in the tests must be carried out in the order described in this section. Each test must be performed without time delay between steps in the test.

(2) A test rig of the type described in $ 162.050–19 must be used in performing each test.

(3) Each mixture used during the tests must be prepared by combining oil supplied from the oil injection pipe

for fifteen (15) minutes. Water is fed to the monitor for a (15) minute period between each mixture. At the end of each (15) minute period, an oil content reading is obtained and recorded.

(d) Test No. 2CM. (1) If the cargo monitor is designed for use with crude oils, it is fed with a mixture of water and the first oil listed in Table 162.050–27(d) at the following concentrations: 15 p.p.m., 100 p.p.m., and a concentration that is ninety (90) percent of the highest oil concentration in water that can be read on the monitor. Each concentration is fed to the monitor in the order listed until a steady reading occurs and is recorded. After each steady reading is recorded, the monitor is fed with water for fifteen (15) minutes. At the end of each fifteen (15) minute period of feeding the monitor with water, an oil content reading is again obtained and recorded.

(2) The steps described in paragraph (d)(1) of this section are repeating using each of the other oils listed in Table 162.050–27(d).

of the test rig and water supplied from the mixture tank of the test rig. However, if the flow of oil through the oil injection pipe becomes intermittent, oil and water may be combined in the mixture tank to form the mixture.

(4) A mixture may be circulated through a monitor only once during testing.

(5) Unless otherwise provided in a specific test, the water used in each test must be clean, fresh water.

(6) The oil used in each test, except Test No. 2CM, must be Arabian light crude oil.

(7) Each test must be performed at an ambient temperature of between 10 °C and 30 °C.

(8) Unless otherwise provided in a specific test, each test must be performed at the maximum mixture pressure, the maximum flow rate, and the power supply ratings at which the monitor is designed to operate.

(9) The particulate contaminant described in Table 162.050-27(g) must be of a type that does not lose more than three (3) percent of its weight after ignition and must be insoluble in a 500 p.p.m. mixture.

(10) In each test the monitor must be operated in accordance with the procedures described in its instructions manual.

(11) Unless otherwise provided in a specific test, the centrifugal pump shown in Figure 162.050–19 must be operated at one thousand (1,000) revolutions per minute or more in each test.

(12) Whenever the oil content of a mixture is recorded, a sample of the mixture must also be taken. The oil content of the sample must be measured using the method described in $ 162.050–39.

(13) A one (1) liter sample of each oil to be used in testing must be taken and provided for use in the sample analysis required by $ 162.050–39.

(c) Test No. 1CM. The cargo monitor is calibrated and zeroed. It is then fed with water for 15 minutes and then with mixtures in the following concentrations: 15 p.p.m., 50 p.p.m., 100 p.p.m., and each additional concentration, in increments of 50 p.p.m. up to the highest oil concentration that can be read on the monitor. Each mixture is fed to the monitor in the order listed

TABLE 162.050-27(D)-OIL TYPE AND

CHARACTERISTICS

Oil type

Characteristics

1. Sahara blend crude oil ....

2. Arabian light crude oil

3. Nigerian medium crude

oil.

Density-low.
Viscosity-low.
Pour point-very low.
Producing country-Algeria.
General description-mixed

base.
Density-medium.
Viscosity-medium.
Pour point-ow.
Producing country–Saudi Ara-

bia.
General description-mixed

base.
Density-high.
Viscosity-medium.
Pour point-ow.
Producing country-Nigeria.
General description—naph-

thenic base.
Density-very high.
Viscosity-very high.
Pour point-low.
Producing country—Ven-

ezuela.
General description-asphaltic

base.
Density-medium.
Viscosity-high.
Pour point—very high.
Producing country—Indonesia.
General description-paraffinic

base.
Bunker C or No. 6 Fuel Oil.

4. Bachaquero 17 crude oil

5. Minas crude oil

6. Residual fuel oil

(3) If any oil listed in Table 162.050– paragraph (f)(1)(vi) of this section is re27(d) is unavailable, an oil with similar corded. properties may be substituted in test- (3) The monitor is fed with water, zeing.

roed, and then fed with oil for one (1) (4) If the monitor is to be used with minute after which the flow of water is refined oil products, the steps described resumed. The times described in parain paragraph (d)(1) of this section are

graph (f)(1) of this section are recorded. performed using each of the following: (4) The monitor is fed with a 100 (i) Leaded regular grade automotive

p.p.m. mixutre until a steady oil congasoline.

tent reading is obtained and recorded. (ii) Unleaded automotive gasoline.

(g) Test No. 5CM. (1) The cargo mon(iii) Kerosene.

itor is fed with a 500 p.p.m. mixture (iv) Light diesel or No. 2 fuel oil.

until a steady reading is obtained and (e) Test No. 3CM. (1) The cargo mon

recorded. itor is fed with water, zeroed, and then

(2) The monitor is fed with a 500 fed with a 100 p.p.m. mixture. The time at which the monitor first detects oil

p.p.m. mixture to which enough sodium in the mixture, the times of reading 63

chloride has been added to provide a p.p.m. and 90 p.p.m., and the time of

concentration of 60,000 parts per milreaching the highest steady reading of

lion of sodium chloride in water. The oil content are recorded. The oil con

oil content reading, when steady, is retent of the mixture at the highest

corded. steady reading is also recorded.

(3) The monitor is fed with a 500 (2) The metering pump is turned off p.p.m. mixture to which enough of the and the time at which the highest read

contaminant described in Table 162.050– ing starts to decrease, the times of 27(g) has been added to provide a conreading 37 p.p.m. and 10 p.p.m., and the centration of 100 parts per million of time of returning to the lowest steady particulate contaminant in water. The oil content reading are recorded. The oil content red ng, when steady, is reoil content of the mixture at the low- corded. est steady reading is also recorded.

(3) The time interval between first TABLE 162.050–27(G)— INSOLUBLE PARTICUdetecting oil in the mixture and read- LATE CONTAMINANT; PHYSICAL DESCRIPTION ing 63 p.p.m., and the time interval be

Particle sizes, microns: Percentage tween the first decrease in the highest

0-5

39+2 reading and reading 37 p.p.m., are aver- 5-10

18+3 aged and recorded as the response time 10-20 for the monitor.

20–40

1843 (f) Test No. 4CM. (1) The cargo mon

40–80 itor is fed with water, zeroed, and then By weight of particle size in contaminant. fed with a mixture containing ten (10)

(h) Test No. 6CM. (1) The cargo monpercent oil for one (1) minute. The fol

itor is fed with a 100 p.p.m. mixture lowing times occurring during this pro

until a steady oil content reading is obcedure are recorded: (i) Time at which the monitor first

tained and recorded. detects oil.

(2) The monitor is fed with a 100 (ii) Time of reading 100 p.p.m.

p.p.m. mixture that has first passed (iii) Time of exceeding the highest oil

through the centrifugal pump of the concentration that can be read on the

test rig. The pump is run at one fourth monitor.

(14) of its design speed. The oil content (iv) Time of returning to the highest reading, when steady, is recorded. oil concentration that can be read on

(3) The steps described in paragraph the monitor.

(h)(2) of this section are repeated with (v) Time of returning to a reading of the pump running at one-half (12) of its 100 p.p.m.

design speed and then repeated at its (vi) Time of returning to the lowest design speed. steady oil content reading.

(i) Test No. 7CM. (1) The steps de(2) The oil content of the mixture at scribed in paragraph (h)(1) of this secthe lowest steady reading described in tion are repeated.

16+3

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(2) The temperature of the mixture is adjusted to 10 °C and the flow continued until a steady oil content reading is obtained and recorded.

(3) The steps described in paragraph (i)(2) of this section are repeated with the temperature of the mixture at 65 °C or the highest mixture temperature at which the cargo monitor is designed to operate, whichever is lower.

(j) Test No. 8CM. (1) The steps described in paragraph (h)(1) of this section are repeated.

(2) If the monitor has a positive displacement mixture pump, the mixture pressure is lowered to one half of the monitor's maximum design pressure. If the monitor has a centrifugal mixture pump, or is not equipped with a mixture pump, the mixture flow rate is reduced to one-half of the monitor's design flow rate. The reduced flow rate or mixture pressure is maintained until a steady oil content reading is obtained and recorded.

(3) If the monitor has a positive displacement mixture pump, the mixture pressure is increased to twice the monitor's ign pressure. If the monitor has a centrifugal mixture pump or does not have a mixture pump, the mixture flow rate is increased to twice the monitor's maximum design flow rate. The increased flow rate or mixture pressure is maintained until a steady oil content reading is obtained and recorded.

(k) Test No. 9CM. (1) The steps described in paragraph (h)(1) of this section are repeated.

(2) The and metering pumps on the test rig are stopped for eight (8) hours after which the steps described in paragraph (h)(1) of this section are repeated.

(1) Test No. 10CM. (1) The supply voltage to the cargo monitor is increased to one hundred and ten (110) percent of its design supply voltage. The monitor is then fed a 100 p.p.m. mixture for one (1) hour. At the end of the one (1) hour period, an oil content reading is obtained and recorded.

(2) The steps described in paragraph (1)(1) of this section are repeated with the supply voltage to the monitor lowered to ninety (90) percent of its design supply voltage.

(3) Upon completing the steps described in paragraph (1)(2) of this sec

tion, the supply voltage to the monitor is returned to the design rating.

(4) The steps described in paragraphs (1)(1), (1)(2), and (1)(3) of this section are repeated varying each other power supply to the monitor in the manner prescribed in those steps for supply voltage.

(m) Test No. 11CM. (1) The monitor is calibrated and zeroed.

(2) The steps described in paragraph (h)(1) of this section are repeated.

(3) A 100 p.p.m. mixture is fed to the monitor for eight (8) hours. At the end of the eight (8) hour period, an oil content reading is obtained and recorded.

(4) The monitor is fed with water until a steady oil content reading is obtained and recorded.

(n) Test No. 12CM. (1) All power to the monitor is shut off for one (1) week. After one week the monitor is started, zeroed, and calibrated.

(2) The monitor is fed with a 100 p.p.m. mixture for one (1) hour. An oil content reading is then obtained and recorded.

(3) The monitor is fed with water for one hour. An oil content reading is then obtained and recorded.

(4) The steps described in paragraphs (n)(2) and (n)(3) of this section are repeated three (3) additional times. During the last hour in which the monitor is fed with a 100 p.p.m. mixture, the monitor is inclined at an angle of 22.5° with the plane of its normal operating position. $ 162.050–29 Bilge monitor: Design

specification. (a) This section contains requirements that apply to bilge monitors.

(b) Each bilge monitor must be designed to meet the requirements of this section and the requirements for a cargo

monitor in $$ 162.050–25 (b) through (g) and $ 162.050–25(i).

(c) Each bilge monitor must have

(1) A device that produces a warning signal, and a signal that can be used to actuate stop valves in a vessel's fixed piping system, when the oil content of the mixture being measured exceeds 15 p.p.m. +5 p.p.m.;

(2) A device that produces a warning signal, and a signal that can be used to actuate stop valves in a vessel's fixed piping system, when the oil content of

190-179 D-00--11

the mixture being measured exceeds 100 p.p.m. +20 p.p.m.; and

(3) A device that produces a warning signal, and a signal that can be used to actuate stop valves in a vessel's fixed piping system, when malfunction, breakdown, or other failure of the bilge monitor occurs.

(d) Each bilge monitor must have a device that is designed to record continuously the concentration of oil in p.p.m. that the monitor measures and to record the date and time of the measurements. The record must be durable enough to be kept for three (3) years. If the device has more than one scale, it must have a means to show on the record the scale in use at the time of the reading.

$ 162.050-31 Bilge monitor: Approval

tests. (a) This section contains requirements that apply to bilge monitors.

(b) Test conditions. (1) Each test must be conducted under the conditions prescribed in this section and under the conditions prescribed for cargo monitors in $$ 162.050-27 (b)(1) through (b)(4) and 88 162.050–27 (b)(7) through (b)(13).

(2) Except as provided in Test No. 2BM, the oil used in each test must be a heavy fuel oil that has a relative density of approximately 0.94 at 15 °C. and a viscosity of at least 220 centistokes (approximately 900 seconds Redwood No. 1) at 37.8 °C.

(3) The water used in each test must be clean fresh water or clean fresh water in solution with sodium chloride. The water must have a relative density at 15 °C. that is equal to or less than 0.085 plus the relative density of the heavy fuel oil used in the tests.

(c) Test No. IBM. (1) The bilge monitor is calibrated and zeroed. It is then fed with water for 15 minutes and then with mixtures in the following concentrations: 15 p.p.m., 50 p.p.m., 75 p.p.m., 100 p.p.m., and each additional concentration, in increments of 25 p.p.m. up to the highest oil concentration that can be read on the monitor. Each concentration is fed to the monitor in the order listed for fifteen (15) minutes. Water is fed to the monitor for fifteen (15) minutes between each mixture. At the end of each fifteen (15)

minute period an oil content reading is obtained and recorded.

(2) The metering and water pumps of the test rig are started and the oil content of the mixture is increased until the device required by $ 162.050–29(c)(1) actuates. The oil content of the mixture causing actuation is recorded.

(3) The oil content of the mixture is then increased until the device required by $ 162.050-29(c)(2) actuates. The oil content of the mixture causing actuation is recorded.

(d) Test No. 2BM. Test No. 1BM is repeated using, in lieu of a heavy fuel oil in the mixture, a light distillate fuel oil having a relative density of approximately 0.83 at 15 °C.

(e) Test No. 3BM. (1) The bilge monitor is fed with water, zeroed, and then fed with a 15 p.p.m. mixture until a steady reading is obtained and recorded. The time of first detecting oil in the mixture and the time of reaching the highest steady reading of oil content are also recorded. The metering pump is turned off after the highest steady reading is obtained. The time at which the highest steady reading starts to decrease and the time of returning to the lowest steady oil content reading are recorded. The oil content of the lowest steady reading is also recorded.

(2) The steps in paragraph (1) of this section are repeated using a 100 p.p.m. mixture.

(f) Test No. 4BM. (1) The bilge monitor is fed with water, zeroed, and then fed with a mixture containing (10) percent oil for one (1) minute. The following times occurring during this procedure are recorded:

(i) Time at which the monitor first detects oil.

(ii) Time of actuation of the device required by $ 162.050–29(c)(1).

(iii) Time of actuation of the device required by $ 162.050–29(c)(2).

(iv) Time of exceeding the highest oil concentration that can be read on the monitor.

(v) Time of returning to the highest oil concentration that can be read on the monitor.

(vi) Time of returning to the lowest steady oil content reading.

(2) The oil content of the mixture at the lowest steady reading described in

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