1 BG LNG Services LLC 24 th October 2006 Transportation of Ethanol and Vegetable Oils -...
-
Upload
marvin-peters -
Category
Documents
-
view
212 -
download
0
Transcript of 1 BG LNG Services LLC 24 th October 2006 Transportation of Ethanol and Vegetable Oils -...
1
BG LNG Services LLC24th October 2006
Transportation of Ethanol and Vegetable Oils -
Understanding the revisionsto MARPOL Annex II
and the IBC Code November 1, 2007
2
AGENDA
INTRODUCTION
SUBSTANCES RECLASSIFICATION
TRANSPORTATION OF ETHANOL
TRANSPORTATION OF VEGETABLE OILS
PROCEDURES & ARRANGEMENTS MANUAL
3
Introduction
MARPOL Annex II & IBC Code Revision Assignment of hazard profile to each substance
Vessels affected - oil products tankers, chemical carriers and other tankers carrying noxious liquid substances
Date of entering in force – 1 January 2007
Impact of reclassification of certain substances
Handling of residues (stripping and discharge requirements)
Procedures and Arrangements Manual
4
Substances Reclassification
Five-tier system changed to four-tier system Each substance in IBC Chapters 17 and 18 has
been recategorized. Evaluation includes aspects such as bio-
accumulation, acute toxicity, chronic toxicity, biodegradation, long-term human health effects and possible effect on marine wildlife/habitats.
Procedures to categorize substances not listed in Chapters 17 or 18 and/or in MEPC 2/Circulars were defined.
Biofuels are currenty under consideration by IMO
5
Substances Reclassification
6
Transportation of Ethanol (Ethyl Alcohol)
Listed in Charter 18 of IBC Code 2007 Edition as Category Z, therefore IBC Code requirements do not apply.
Can be carried under a Noxious Liquid Substance (NLS) Certificate.
NLS requirements of MARPOL Annex II indicate lower limits of residue within the tanks and has revised limitations on the discharge of such residues
7
Ethanol classification – IBC Code
8
Ethanol Transportation Requirements
Oil Carrier requirements plus NLS requirements of MARPOL Annex II for Category Z:
Tank Stripping Requirements “empty to the maximum extent for existing vessels, 75 liters for vessel constructed or converted after 1 January 2007”
Underwater Discharge (not mandatory for vessels built before 1 January 2007)
Procedures and Arrangements Manual
9
Ethanol Transportation - ABS Requirements
Applicable Rules:
Steel Vessels – requirements of Oil Carrier (Part 5C Chapters 1 or 2 of the Rules) + MARPOL Annex II (Category Z) + Administration
Steel Vesels under 90 m – requirements of Oil Carrier (Part 5) + Resolution A.673(16) + Administration
Steel Barges – requirements of Oil Tank Barge (5-2-3 of the Steel Barges Rules) + MARPOL Annex II (Category Z) + Administration
10
Carriage of Ethanol - Operational Concerns
No Rule or mandatory requirements for specific painting scheme
Operators indicating that pure epoxy is not recommended. Suitable coatings would be Isocyanate Epoxy, Novalac Expoxy and Phenolic Epoxy
Piping systems materials and components should be suitable for Ethanol
Foam concentrate of the fixed deck foam system shall be compatible with Ethanol
Tankers of 20K DWT and above require IGS. The acidity of Ethanol is affected during transportation by the presence of the CO2 from the inert gas generator
11
Transportation of Vegetable Oils
Now classified under IBC Code and requires a double hull tanker for carriage.
Certain vegetable oils can be carried in Type 2 ships and others can be carried in Type 3.
Vegetable oil carried in deep tanks in existing dry cargo ships has been legislated separately in MEPC 48 (54) (tanks are to be no closer than 760 mm from the shell plating).
12
Ship Type Arrangements
13
Ship Type Arrangements
CL
Ship Type
B/5 or 11.5 m(the lesser)
≥760 mm
SWL
Type 3Type 1 Type 2
CL CL
Max. Amount of Cargo per Tank
1,250 m3 3000 m3
B/15 or 6 m,the lesser but≥ 760 mm
No Limit
14
Transportation of Vegetable Oils (cont.)
MARPOL Annex II permits an exemption of the Administration for vegetable oils identified with footnote “k” in Chapter 17 of IBC Code. Exemption allows the carriage of such oils in NLS tanker meeting the requirements for ships Type 3 (instead of 2), except for cargo tank location.
Wing tanks or spaces shall be arranged such that cargo tanks are located inboard of the moulded line of side shell plating nowhere less than 760 mm.
Double bottom tanks or spaces shall be arranged such that the distance between the bottom of cargo tanks and moulded line of bottom plating measured at right angles to the bottom shell plating is not less than B/15 (m) or 2.0 m at centerline, whichever is the lesser. Minimum distance shall be 1.0 m
The relevant certificate shall indicate exemption granted.
15
Tank stripping limits
Requirement Current MARPOL Annex II Revised MARPOL Annex II (1/1/2007)
Pollution Category
AMajor Hazard
BHazard
CMinor
Hazard
DRecognizable
Hazard
XMajor
Hazard
YHazard
ZMinor Hazard
Maximum Residue After Stripping
Ship Details
IBC/BCH Other
X [1] < 1/7/86(BCH Ships)
NotApplicable
300 +50* liters#
900 +50* liters#
No minimum300 +50*
liters#
300 +50* liters#
900 +50* liters#
If “Z” and in IBC Ch.18, empty to maximum
extent.If “OS” and
in IBC Ch.18, not applicable
75 liters#
1/7/86 X [1] < 1/1/2007
(IBC Ships)
100 +50* liters#
300 +50* liters#
No minimum100 +50*
liters#
100 +50* liters#
300 +50* liters#
X [1] 1/1/2007
(IBC Ships)Not Applicable 75 liters# 75 liters# 75
liters#
* performance test tolerance # performance test required
16
Stripping performance test
Clean the tank and piping prior to testing
ensure the ship trim (max. 3 deg. by the stern) and heel (max 1 deg.) give favorable drainage to the suction point in the tank
fill the tank with water to the depth representing the normal end of unloading condition i.e. the point at which stripping is usually commenced.
provide 100kPa (1 atmosphere) back pressure (usually a constant pressure valve) at the unloading manifold – see figure
17
Back-pressure arrangements
18
Stripping performance
discharge and strip the tank according to the designated procedure
the time taken for the stripping procedure is to be recorded
close the manifold valve and open all valves and remove drain plugs
the residue is then collected and measured
the stripping performance details are to be entered in the P&A manual (including time taken)
19
Discharge
Discharge Current MARPOL Annex II Revised MARPOL Annex II (1/1/2007)
Pollution Category
A B C D X Y Z
Major Hazard Hazard Minor Hazard Recognizable Hazard
Major Hazard Hazard Minor Hazard
Concentration Any residue to reception
facility, except 0.1% by weight or
below.
1 ppm 10 ppm 1 part NLS to 10 parts
water.
Any residue to reception
facility, except 0.1% by weight or
below.
Any residue to sea
Any residue to sea
En route 7 Knots 7 Knots
Piping Outlet Location
Underwater Not Applicable Underwater (not mandatory for ships with
X [1] <1/1/2007 carrying Cat. Z)
Nearest land 12 nautical miles and water depth > 25m 12 nautical miles and water depth > 25m
X [1] - keel laying date or commencement date of conversion to a chemical carrier.
20
List of Reclassified Vegetable Oils
Comparison of pollution categories and ship types of some vegetable oils before and after 1 January 2007 revision
Pollution Category Ship Type Vegetable Oils Before Revised Before Revised
Coconut Oil D Y Ch. 18 2(k) Corn Oil D Y Ch. 18 2(k) Cottonseed Oil D Y Ch. 18 2(k) Groundnut Oil D Y Ch. 18 2(k) Olive Oil D Y Ch. 18 2(k) Palm Kernel Oil D Y Ch. 18 2(k) Palm Oil D Y Ch. 18 2(k) Rapeseed Oil D Y Ch. 18 2(k) Safflower Oil D Y Ch. 18 2(k) Soyabean Oil D Y Ch. 18 2(k) Sunflowerseed Oil D Y Ch. 18 2(k)
21
Procedures and Arrangements Manual
Every ship certified to carry substances of category X, Y or Z shall have on board a Manual approved by the Administration
The main purpose of the Manual is to make operational procedures and physical arrangements available to the ship’s officers
It is necessary to review the current Manual against the revised MARPOL Annex II to determine those sections that will require amendment, in particular with respect to the stripping requirements by the corresponding Administration
To assist Owners in compiling the P&A Manual, a template is available at ABS website
www.eagle.org/regulatory
22
Thank you for your attention !