ABS 212-2008 GUIDE FOR THE CLASS NOTATION FOR BOW OR STERN LOADING AND UNLOADING (BLU or SLU) FOR OIL CARRIERS LIQUEFIED GAS CARRIERS OR CHEMICAL CARRIERS.pdf

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1、 GUIDE FOR THE CLASS NOTATION FOR BOW OR STERN LOADING AND UNLOADING (BLU or SLU) FOR OIL CARRIERS, LIQUEFIED GAS CARRIERS OR CHEMICAL CARRIERS JULY 2008 Guide to Color Coding Used in Online Version of the Guide The following summarizes the colors corresponding to Rule Changes, Corrigenda items and

2、editorial changes in the Guide files which are available for download. Rule Changes: NOTICE NO. 1 November 2010 (effective 1 January 2011) Corrigenda: Editorials: Editorial Changes Guide for the Class Notation Bow or Stern Loading and Unloading (BLU or SLU) for Oil Carriers, Chemical Carriers or Liq

3、uefied Gas Carriers GUIDE FOR THE CLASS NOTATION FOR BOW OR STERN LOADING AND UNLOADING (BLU or SLU) FOR OIL CARRIERS, LIQUEFIED GAS CARRIERS OR CHEMICAL CARRIERS JULY 2008 (Updated November 2010 see next page) American Bureau of Shipping Incorporated by Act of Legislature of the State of New York 1

4、862 Copyright 2008 American Bureau of Shipping ABS Plaza 16855 Northchase Drive Houston, TX 77060 USA Updates November 2010 consolidation includes: July 2008 version plus Notice No. 1 ABSGUIDE FOR THE CLASS NOTATION BOW OR STERN LOADING AND UNLOADING (BLU OR SLU) .2008 iii Foreword Foreword This Gui

5、de has been developed in response to industry requests for an optional class notation to address arrangements where an Oil Carrier, Liquefied Gas Carrier or Chemical Carrier is provided with facilities to load or unload cargo with piping manifold located at the bow or stern of the vessel. ABS curren

6、tly has requirements for bow or stern loading and unloading arrangements of Oil Carriers, Liquefied Gas Carriers or Chemical Carriers in the ABS Rules for Building and Classing Steel Vessels (Steel Vessel Rules). This Guide consolidates the requirements in the 2008 version of the ABS Rules for Build

7、ing and Classing Steel Vessels for certifying bow or stern loading arrangements on these types of vessels. iv ABSGUIDE FOR THE CLASS NOTATION MOVABLE PLATFORMS (DECKS) FOR VEHICLE LOADING (MOVDK) .2007 Table of Contents GUIDE FOR THE CLASS NOTATION BOW OR STERN LOADING AND UNLOADING (BLU or SLU) FOR

8、 OIL CARRIERS, LIQUEFIED GAS CARRIERS OR CHEMICAL CARRIERS CONTENTS SECTION 1 Introduction 1 1 Scope1 3 Application.1 5 Definitions .1 5.1 Oil Carrier 1 5.3 Liquefied Gas Carrier.1 5.5 Chemical Carrier1 5.7 Cargo Area 1 5.9 Hazardous Areas.2 7 Submission of Design Plans and Data .2 SECTION 2 Oil Car

9、riers 3 1 General .3 3 Cargo Piping System 3 5 Hazardous Areas and Electrical Systems.3 7 Precautions for Ventilation of Accommodation and Machinery Spaces 4 9 Communication and Instrumentation Systems .4 11 Fire Extinguishing Arrangements4 SECTION 3 Liquefied Gas Carriers. 5 1 General .5 3 Cargo Pi

10、ping System 5 5 Hazardous Areas and Electrical Systems.6 7 Communication System6 9 Fire Extinguishing Arrangements6 SECTION 4 Chemical Carriers. 7 1 General .7 3 Cargo Piping System 7 5 Hazardous Areas and Electrical Systems.8 7 Communication and Remote Shutdown Systems 8 9 Fire Extinguishing Arrang

11、ements8 ABSGUIDE FOR THE CLASS NOTATION BOW OR STERN LOADING AND UNLOADING (BLU OR SLU) .2008 1 Section 1: Introduction SECTION 1 Introduction 1 Scope This Guide covers the criteria for the Notation BLU (Bow Loading and Unloading arrangements) and the Notation SLU (Stern Loading and Unloading arrang

12、ements) on Oil Carriers, Liquefied Gas Carriers and Chemical Carriers classed with ABS. This Guide consolidates the requirements for bow or stern loading and unloading arrangements currently found in the following sections of the 2008 version of the ABS Rules for Building and Classing Steel Vessels

13、(Steel Vessel Rules): 5C-1-7/3.3.3 Bow or Stern Loading and Unloading (Oil Carriers) 5C-8-3/8 Bow or stern loading and unloading arrangements (Liquefied Gas Carriers) 5C-9-3/7 Bow or stern loading and unloading arrangements (Chemical Carriers) 3 Application This Guide is applicable to Oil Carriers,

14、Liquefied Gas Carriers and Chemical Carriers with bow or stern loading and unloading arrangements. A vessel provided with bow loading and unloading arrangements in compliance with this Guide will be eligible for the notation BLU. A vessel provided with stern loading and unloading arrangements in com

15、pliance with this Guide will be eligible for the notation SLU. 5 Definitions 5.1 Oil Carrier An Oil Carrier is a vessel designed and constructed to carry oil in bulk, having flash points at or below 60C (140F) closed cup test, and includes vessels of similar types, such as combination carriers (Ore/

16、Oil Carriers, etc). 5.3 Liquefied Gas Carrier A Liquefied Gas Carrier is a vessel designed and constructed for the transportation in bulk of liquefied gas or other products listed in Section 5C-8-19 of the Steel Vessel Rules, or Chapter 19 of the International Code for the Construction and Equipment

17、 of Ships Carrying Liquefied Gases in Bulk (IGC Code). 5.5 Chemical Carrier A Chemical Carrier is a vessel designed and constructed for the carriage in bulk of any liquid product listed in Section 5C-9-17 of the Steel Vessel Rules, or Chapter 17 of the International Code for the Construction and Equ

18、ipment of Ships Carrying Dangerous Chemicals in Bulk (IBC Code). 5.7 Cargo Area For an Oil Carrier the Cargo Area is that part of the vessel that contains cargo tanks, slop tanks and cargo pump rooms including pump rooms, cofferdams, ballast and void spaces adjacent to cargo tanks and also deck area

19、s throughout the entire length and breadth of the part of the vessel over the above mentioned spaces. Section 1 Introduction 2 ABSGUIDE FOR THE CLASS NOTATION BOW OR STERN LOADING AND UNLOADING (BLU OR SLU) .2008 For a Liquefied Gas Carrier the Cargo area is that part of the ship which contains the

20、cargo containment system and cargo pump and compressor rooms and includes deck areas over the full length and breadth of the part of the ship over the above-mentioned spaces. Where fitted, the cofferdams, ballast or void spaces at the after end of the aftermost hold space or at the forward end of th

21、e forwardmost hold space are excluded from the cargo area. For a Chemical Carrier the Cargo area is that part of the ship that contains cargo tanks, slop tanks, cargo pump-rooms including pump-rooms, cofferdams, ballast or void spaces adjacent to cargo tanks or slop tanks and also deck areas through

22、out the entire length and breadth of the part of the ship over the above-mentioned spaces. Where independent tanks are installed in hold spaces, cofferdams, ballast or void spaces at the after end of the aftermost hold space or at the forward end of the forwardmost hold space are excluded from the c

23、argo area. 5.9 Hazardous Areas Areas where flammable or explosive gases or vapors are normally present or likely to be present are known as Hazardous Areas. The flammable or explosive atmosphere may be expected to exist continuously or intermittently. Typically, the cargo area, spaces around cargo t

24、ank openings, spaces around disconnectable cargo oil pipe joints, etc., are to be regarded as hazardous areas. The word hazardous, where used in this Guide, means the presence of a flammable atmosphere. 7 Submission of Design Plans and Data (2011) In addition to the submission of plans according to

25、the requirements stated in Section 1-1-7 of the ABS Rules for Condition of Classification (Part 1), the following design plans and data are to be submitted: Booklet showing standard construction details for piping (see 4-6-1/9.5 of the Steel Vessel Rules) Details of the cargo piping from the cargo a

26、rea to the bow or stern loading/unloading manifold Hazardous area plan and electrical equipment data Fire extinguishing arrangements for the bow or stern loading/unloading areas Spill containment arrangements Plans should generally be submitted electronically to ABS. However, hard copies will also b

27、e accepted. ABSGUIDE FOR THE CLASS NOTATION BOW OR STERN LOADING AND UNLOADING (BLU OR SLU) .2008 3 Section 2: Oil Carriers SECTION 2 Oil Carriers 1 General The bow or stern loading and unloading arrangements for an Oil Carrier are to comply with requirements of 5C-1-7/3.3.3 of the Steel Vessel Rule

28、s. The requirements are repeated below for ready reference. 3 Cargo Piping System 3.1 Cargo lines outside the cargo area are to be installed outside accommodation spaces, service spaces, machinery spaces and control stations. 3.3 Pipe joints outside of the cargo area are to be welded, except for con

29、nections to the manifold or the loading and unloading equipment. 3.5 The cargo loading and unloading lines are to be clearly identified and provided with means to segregate them from the cargo main line when not in use. The separation is to be achieved by: i) Two valves, located in the cargo area, w

30、hich can be locked in the closed position, and fitted with means to detect leakage past the valves; or ii) One valve together with another closing device providing an equivalent standard of segregation, such as a removable spool piece or spectacle flange. 3.7 The loading and unloading connection is

31、to be fitted with a shut-off valve and a blank flange. The blank flange may be omitted if an equivalent means of closing is incorporated in the connection to the hose coupling. 3.9 Arrangements are to be provided for cargo lines outside the cargo area for easy draining to a slop tank or cargo tank a

32、nd for cleaning and inerting. 3.11 Spill containment is to be provided under the loading and unloading manifold. 5 Hazardous Areas and Electrical Systems The space within 3 m (10 ft) from the oil spill containment boundary and the manifold is considered to be hazardous. Accordingly, there is to be n

33、o source of ignition present within this space. Electrical equipment, if installed in this space, is to be of the certified safe type, see 5C-1-7/31.9 of the Steel Vessel Rules. Section 2 Oil Carriers 4 ABSGUIDE FOR THE CLASS NOTATION BOW OR STERN LOADING AND UNLOADING (BLU OR SLU) .2008 7 Precautio

34、ns for Ventilation of Accommodation and Machinery Spaces The arrangement of ventilation inlets and outlets and other deckhouse and superstructure boundary space openings are to be such as to complement the provisions of 5C-1-7/11 of the Steel Vessel Rules. Such vents, especially for machinery spaces

35、, are to be situated as far aft as practicable. Due consideration in this regard is to be given when the vessel is equipped to load or discharge at the stern. 9 Communication and Instrumentation Systems Means of communication (e.g. telephones, two-way portable radios, etc.) is to be provided onboard

36、 between the cargo control station and the location of the cargo shore connection. See 5C-1-7/11.11.1 of the Steel Vessel Rules for measures for preventing liquid rising in the vent pipes. 11 Fire Extinguishing Arrangements Vessels fitted with bow or stern loading and unloading arrangements are to b

37、e provided with one additional foam monitor meeting the requirements of 5C-1-7/27.7 of the Steel Vessel Rules and one additional applicator meeting the requirements of 5C-1-7/27.13 of the Steel Vessel Rules. The additional monitor is to be located to protect the bow or stern loading and unloading ar

38、rangements. The area of the cargo line forward or aft of the cargo block area is to be protected by the above-mentioned applicator. ABSGUIDE FOR THE CLASS NOTATION BOW OR STERN LOADING AND UNLOADING (BLU OR SLU) .2008 5 Section 3: Liquefied Gas Carriers SECTION 3 Liquefied Gas Carriers 1 General The

39、 bow or stern loading and unloading arrangements for a Liquefied Gas Carrier are to comply with requirements of 5C-8-3/8 of the Steel Vessels Rules. The requirements are repeated below for ready reference. 1.1 Bow or stern loading and unloading lines which are led past accommodation spaces, service

40、spaces or control stations are not to be used for the transfer of products requiring a type 1G ship. Bow or stern loading and unloading lines are not to be used for the transfer of toxic products as specified in 5C-8-1/3.38 of the Steel Vessels Rules unless specifically approved by ABS. 1.3 Entrance

41、s, air inlets and openings to accommodation spaces, service spaces, machinery spaces and control stations are not to face the cargo shore connection location of bow or stern loading and unloading arrangements. They are to be located on the outboard side of the superstructure or deckhouse at a distan

42、ce of at least 4% of the length of the vessel, but not less than 3 m from the end of the superstructure or deckhouse facing the cargo shore connection location of the bow or stern loading and unloading arrangements. This distance, however, need not exceed 5 m. Sidescuttles facing the shore connectio

43、n location and on the sides of the superstructure or deckhouse within the distance mentioned above are to be of the fixed (non-opening) type. In addition, during the use of the bow or stern loading and unloading arrangements, all doors, ports and other openings on the corresponding superstructure of

44、 deckhouse side are to be kept closed. Where in the case of small vessels, compliance with 5C-8-3/2.4 of the Steel Vessel Rules and this paragraph is not possible, ABS may approve relaxations from the above requirements. 1.5 Deck openings and air inlets to spaces within distances of 10 m from the ca

45、rgo shore connection location are to be kept closed during the use of bow or stern loading or unloading arrangements. 1.7 Portable arrangements are not permitted. 3 Cargo Piping System In addition to the requirements of Section 5C-8-5 of the Steel Vessel Rules, the following provisions apply to carg

46、o piping and related piping equipment. 3.1 Cargo piping and related piping equipment outside the cargo area are to have only welded connections. The piping outside the cargo area is to run on the open deck and is to be at least 760 mm inboard, except for athwartships shore connection piping. Such pi

47、ping is to be clearly identified and fitted with a shutoff valve at its connection to the cargo piping system within the cargo area. At this location, it is to also be capable of being separated by means of a removable spool piece and blank flanges when not in use. Section 3 Liquefied Gas Carriers 6

48、 ABSGUIDE FOR THE CLASS NOTATION BOW OR STERN LOADING AND UNLOADING (BLU OR SLU) .2008 3.3 The piping is to be full penetration butt welded and fully radiographed, regardless of pipe diameter and design temperature. Flange connections in the piping are only permitted within the cargo area and at the

49、 shore connection. 3.5 Arrangements are to be made to allow such piping to be purged and gas-freed after use. When not in use, the spool pieces are to be removed and the pipe ends be blank-flanged. The vent pipes connected with the purge are to be located in the cargo area. 5 Hazardous Areas and Electrical Systems Electrical equipment within a zone of 3 m from the cargo shore connection location is to be in accordance with Section 5C-8-10 of the Steel Vessel Rules. 7 Communication System Means of communication between the cargo control station and the shore