The following relevant verification procedure shall be used to determine
whether the fuel oil delivered to, in use or carried for use on board a ship has met the
applicable sulphur limit of regulation 14 of this Annex.
This appendix refers to the following representative MARPOL Annex
VI fuel oil samples:
-
Part 1 – sample of fuel oil deliveredfootnote in accordance with regulation 18.8.1, hereafter referred to as the "MARPOL delivered sample" as defined in regulation 2.1.22.
-
Part 2 – sample of fuel oil in use,footnote intended to be used or carried for use on board in
accordance with regulation 14.8, hereafter referred to as the "in-use sample" as
defined in regulation 2.1.16 and "onboard sample"footnote as defined in regulation 2.1.24.
Part 1 – MARPOL delivered sample
1 General Requirements
1.1 The representative sample of the fuel oil, which is required by regulation 18.8.1 (the MARPOL
delivered sample), shall be used to verify the sulphur content of the fuel oil delivered
to a ship.
1.2 A Party, through its competent authority, shall manage the verification
procedure.
1.3 A laboratory undertaking the sulphur testing procedure given in this
appendix shall have valid accreditationfootnote in respect of the test method to be used.
2 Verification Procedure Part 1
2.1 The MARPOL delivered sample shall be conveyed by the competent
authority to the laboratory.
2.2 The laboratory shall:
-
.1 record the details of the seal number and the sample label on the
test record;
-
.2 record the condition of the seal of the sample as received on the
test record; and
-
.3 reject any sample where the seal has been broken prior to receipt
and record that rejection on the test record.
2.3 If the seal of the sample as received has not been broken, the
laboratory shall proceed with the verification procedure and shall:
-
.1 unseal the sample;
-
.2 ensure that the sample is thoroughly homogenized;
-
.3 draw two subsamples from the sample; and
-
.4 reseal the sample and record the new reseal details on the test
record.
2.4 The two subsamples shall be tested in succession, in accordance with the
specified test method referred to in regulation 2.1.30 of this Annex. For the purposes of this Part 1
verification procedure, the results of the test analysis shall be referred to as '1A'
and '1B':
-
.1 results 1A and 1B shall be recorded on the test record in
accordance with the requirements of the test method; and
-
.2 if the results of 1A and 1B are within the repeatability (r)footnote of the test method, the results shall be considered
valid; or
-
.3 if the results 1A and 1B are not within the repeatability (r) of
the test method, both results shall be rejected and two new subsamples shall be
taken by the laboratory and tested. The sample bottle shall be resealed in
accordance with paragraph 2.3.4 after the new subsamples have been taken.
-
.4 in the case of two failures to achieve repeatability between 1A
and 1B, the cause of that failure shall be investigated by the laboratory and
resolved before further testing of the sample is undertaken. On resolution of that
repeatability issue, two new subsamples shall be taken in accordance with
paragraph 2.3. The sample shall be resealed in accordance with paragraph 2.3.4
after the new subsamples have been taken.
2.5 If the test results of 1A and 1B are valid, an average of these two
results shall be calculated. The average value shall be referred to as 'X' and shall be
recorded on the test record:
-
.1 if the result X is equal to or less than the applicable limit
required by regulation 14, the fuel oil shall be considered to have met the
requirement; or
-
.2 if the result X is greater than the applicable limit required by
regulation
14, the fuel oil shall be considered to have not met the
requirement.
Table 1: Summary of Part 1 MARPOL delivered sample procedure
On the basis of the test method referred to in regulation
2.1.30 of this Annex
|
Applicable limit %
m/m: V
|
Result 2.5.1: X ≤
V
|
Result 2.5.2: X
> V
|
0.10
|
Met the
requirement
|
Not
met the requirement
|
0.50
|
|
Result X reported to 2 decimal places
|
2.6 The final results obtained from this verification procedure shall be
evaluated by the competent authority.
2.7 The laboratory shall provide a copy of the test record to the competent
authority managing the verification procedure.
Part 2 – In-use and onboard samples
3 General Requirements
3.1 The in-use or onboard sample, as appropriate, shall be used to verify
the sulphur content of the fuel oil as represented by that sample of fuel oil at the
point of sampling.
3.2 A Party, through its competent authority, shall manage the verification
procedure.
3.3 A laboratory undertaking the sulphur testing procedure given in this
appendix shall have valid accreditationfootnote in respect of the test method to be used.
4 Verification Procedure Part 2
4.1 The in-use or onboard sample shall be conveyed by the competent
authority to the laboratory.
4.2 The laboratory shall:
-
.1 record the details of the seal number and the sample label on the
test record;
-
.2 record the condition of the seal of the sample as received on the
test record; and
-
.3 reject any sample where the seal has been broken prior to receipt
and record that rejection on the test record.
4.3 If the seal of the sample as received has not been broken, the
laboratory shall proceed with the verification procedure and shall:
-
.1 unseal the sample;
-
.2 ensure that the sample is thoroughly homogenized;
-
.3 draw two subsamples from the sample; and
-
.4 reseal the sample and record the new reseal details on the test
record.
4.4 The two subsamples shall be tested in succession, in accordance with the
specified test method referred to in regulation 2.1.30 of this Annex. For the purposes of this Part 2
verification procedure, the results obtained shall be referred to as '2A' and '2B':
-
.1 results 2A and 2B shall be recorded on the test record in
accordance with the requirements of the test method; and
-
.2 if the results of 2A and 2B are within the repeatability (r)footnote of the test method, the results shall be considered
valid; or
-
.3 if the results of 2A and 2B are not within the repeatability (r)
of the test method, both results shall be rejected and two new subsamples shall be
taken by the laboratory and tested. The sample bottle shall be resealed in
accordance with paragraph 4.3.4 after the new subsamples have been taken; and
-
.4 in the case of two failures to achieve repeatability between 2A and
2B, the cause of that failure shall be investigated by the laboratory and resolved
before further testing of the sample is undertaken. On resolution of that
repeatability issue, two new subsamples shall be taken in accordance with
paragraph 4.3. The sample shall be resealed in accordance with paragraph 4.3.4
after the new subsamples have been taken.
4.5 If the test results of 2A and 2B are valid, an average of these two
results shall be calculated. That average value shall be referred to as 'Z' and shall be
recorded on the test record:
-
.1 if Z is equal to or less than the applicable limit required by
regulation
14, the sulphur content of the fuel oil as represented by the tested
sample shall be considered to have met the requirement;
-
.2 if Z is greater than the applicable limit required by regulation
14 but less than or equal to that applicable limit + 0.59R (where R is
the reproducibility of the test method),footnote the sulphur content of the fuel oil as represented by
the tested sample shall be considered to have met the requirement; or
-
.3 if Z is greater than the applicable limit required by regulation
14 + 0.59R, the sulphur content of the fuel oil as represented by the
tested sample shall be considered to have not met the requirement.
Table 2: Summary of in-use or onboard sample procedurefootnote
On the basis of the test method referred to in regulation
2.1.30 of this Annex
|
Applicable limit
%m/m: V
|
Test margin value:
W
|
Result 4.5.1: Z ≤
V
|
Result 4.5.2: V
< Z ≤ W
|
Result 4.5.3: Z >
W
|
0.10
|
0.11
|
Met
the requirement
|
Met the
requirement
|
Not met
the requirement
|
0.50
|
0.53
|
|
|
Result Z reported to 2 decimal places
|
4.6 The final results obtained from this verification procedure shall be
evaluated by the competent authority.
4.7 The laboratory shall provide a copy of the test record to the competent
authority managing the verification procedure.