No. S 696
Prevention of Pollution of the Sea Act 1990
Prevention of Pollution of the Sea
(Noxious Liquid Substances in Bulk)
(Amendment) Regulations 2023
In exercise of the powers conferred by section 34(1) of the Prevention of Pollution of the Sea Act 1990, the Maritime and Port Authority of Singapore, with the approval of the Minister for Transport, makes the following Regulations:
Citation and commencement
1.  These Regulations are the Prevention of Pollution of the Sea (Noxious Liquid Substances in Bulk) (Amendment) Regulations 2023 and come into operation on 1 November 2023.
Amendment of Appendix 1 of First Schedule
2.  In the Prevention of Pollution of the Sea (Noxious Liquid Substances in Bulk) Regulations 2006 (G.N. No. S 686/2006), in the First Schedule, in Appendix 1, after “The Revised GESAMP hazard evaluation procedure”, replace the tables with —
 
“
 
 
 
 
 
A
Bioaccumulation and Biodegradation
B
Aquatic Toxicity
 
 
Numerical rating
A1
Bioaccumulation
A2
Biodegradation
B1
Acute toxicity
LC/EC/IC50 (mg/L)
B2
Chronic toxicity
EC10 or NOEC (mg/L)
 
 
 
A1a: log Pow
A1b: BCF
 
 
 
 
 
0
log < 1,
log > ca.7
MW > 1000
no measurable
BCF
R: readily
biodegradable
AT > 1000
CT > 1
 
 
1
1 ≤ log < 2
1 ≤ BCF < 10
NR:
not readily
biodegradable
100 < AT ≤ 1000
0.1 < CT ≤ 1
 
 
2
2 ≤ log < 3
10 ≤ BCF < 100
10 < AT ≤ 100
0.01 < CT ≤ 0.1
 
 
3
3 ≤ log < 4
100 ≤ BCF < 500
1 < AT ≤ 10
0.001 < CT ≤ 0.01
 
 
4
4 ≤ log < 5
500 ≤ BCF < 4000
0.1 < AT ≤ 1
CT ≤ 0.001
 
 
5
5 ≤ log < ca.7
BCF ≥ 4000
0.01 < AT ≤ 0.1
 
 
 
6
 
 
 
AT ≤ 0.01
 
 
 
 
 
 
 
 
 
 
 
 
C
Acute Mammalian Toxicity
 
 
Numerical rating
C1
Oral toxicity
C2
Dermal toxicity
C3
Inhalation toxicity
 
 
 
 
 
C3a
C3b
 
 
 
LD50/ATE (mg/kg)
LD50/ATE (mg/kg)
vapour/mist
LC50/ATE (mg/L)
mist only
LC50/ATE (mg/L)
vapour only
LC50/ATE (mg/L)
 
 
0
ATE > 2000
ATE > 2000
ATE > 20
ATE > 5
ATE > 20
 
 
1
300 < ATE ≤ 2000
1000 < ATE ≤ 2000
10 < ATE ≤ 20
1 < ATE ≤ 5
10 < ATE ≤ 20
 
 
2
50 < ATE ≤ 300
200 < ATE ≤ 1000
2 < ATE ≤ 10
0.5 < ATE ≤ 1
2 < ATE ≤ 10
 
 
3
5 < ATE ≤ 50
50 < ATE ≤ 200
0.5 < ATE ≤ 2
0.05 < ATE ≤ 0.5
0.5 < ATE ≤ 2
 
 
4
ATE ≤ 5
ATE ≤ 50
ATE ≤ 0.5
ATE ≤ 0.05
ATE ≤ 0.5
 
 
 
 
 
 
 
D
Irritation, Corrosion and Long‑term Health Effects
 
 
Numerical rating
D1
Skin irritation and corrosion
D2
Eye irritation and corrosion
D3
Long‑term health effects
 
 
0
not irritating
not irritating
C – Carcinogenic
M – Mutagenic
R – Reprotoxic
Ss – Sensitizing to skin
Sr – Sensitizing to respiratory system
A – Aspiration hazard
T – Target Organ Toxicity
N – Neurotoxic
I – Immunotoxic
 
 
1
mildly irritating
mildly irritating
 
 
2
irritating
irritating
 
 
3
severely irritating or corrosive
3A Corr. (≤ 4 h)
3B Corr. (≤ 1 h)
3C Corr. (≤ 3 min)
severely irritating
 
 
 
 
 
 
 
 
 
E
Interference with Other Uses of the Sea
 
 
Numerical rating
E1
Flammability flashpoint (°C)
E2
Physical effects on wildlife and benthic habitats
E3
Interference with coastal amenities
 
 
0
-
(not flammable, does not burn)
Fp – Persistent floater
F – Floater
S – Sinker
G – Gas
E – Evaporator
D – Dissolver and combinations thereof
no interference
no warning
 
 
1
Fp > 93
slightly objectionable
warning, no closure of amenity
 
 
2
60 < Fp ≤ 93
moderately objectionable
possible closure of amenity
 
 
3
23 ≤ Fp ≤ 60
highly objectionable
closure of amenity
 
 
4
Fp < 23
 
 
 
 
 
”.
 
[G.N. Nos. S 470/2013; S 868/2014; S 798/2015; S 667/2016; S 494/2017; S 806/2020; S 1021/2020; S 114/2022; S 1018/2022]
Made on 30 October 2023.
YEE PING YI
Acting Chairperson,
Maritime and Port Authority of Singapore.
[AG/LEGIS/SL/243/2020/2 Vol. 1]
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