1、 Guide for Implementation of International Safety Guide for Oil Tankers (ISGOTT) GUIDE FOR IMPLEMENTATION OF INTERNATIONAL SAFETY GUIDE FOR OIL TANKERS (ISGOTT) FEBRUARY 2016 American Bureau of Shipping Incorporated by Act of Legislature of the State of New York 1862 Copyright 2016 American Bureau o
2、f Shipping ABS Plaza 16855 Northchase Drive Houston, TX 77060 USA ii ABSGUIDE FOR IMPLEMENTATION OF INTERNATIONAL SAFETY GUIDE FOR OIL TANKERS (ISGOTT) .2016 Foreword Foreword In addition to the ABS Rules for Building and Classing Steel Vessels (Steel Vessel Rules) required criteria, this Guide outl
3、ines equipment and arrangement requirements that are identified in the International Safety Guide for Oil Tankers and Terminals (ISGOTT) for Oil Carriers. This Guide includes enhanced criteria for the cargo oils and associated systems such as the ballast system, gas testing equipment, cargo vapor em
4、ission control systems, tank cleaning and gas-freeing systems. However, it does not include or attempt to address operational requirements for Oil Carriers as well as the requirements for terminals identified in the International Safety Guide for Oil Tankers and Terminals (ISGOTT) for Oil Carriers.
5、This Guide also introduces an optional notation, ABS-ISGOTT that will be granted to those Oil Carriers that meet the requirements identified in this Guide. This Guide is intended to encourage owners to pursue increased levels of safety by providing means to recognize such efforts via an optional not
6、ation. It should also be noted that the Guide does not relate to cargoes other than crude oil and petroleum products that are carried in Oil Carriers. Therefore, it does not cover the carriage of chemicals or liquefied gases, which are the subject of other industry guides. This Guide becomes effecti
7、ve on the first day of the month of publication. Users are advised to check periodically on the ABS website www.eagle.org to verify that this version of this Guide is the most current. We welcome your feedback. Comments or suggestions can be sent electronically by email to 0Hrsdeagle.org. ABSGUIDE F
8、OR IMPLEMENTATION OF INTERNATIONAL SAFETY GUIDE FOR OIL TANKERS (ISGOTT) .2016 iii Table of Contents GUIDE FOR IMPLEMENTATION OF INTERNATIONAL SAFETY GUIDE FOR OIL TANKERS (ISGOTT) CONTENTS SECTION 1 General 1 1 Introduction . 1 3 Application 1 3.1 Vessels 1 3.3 Regulatory Requirements 1 5 Class Not
9、ations . 1 7 Reference Documents 1 9 Plans and Details to be Submitted 2 SECTION 2 Cargo and Ballast Systems . 3 1 Operations Manual 3 3 Loading Rates . 3 3.1 Venting Arrangements . 3 3.3 Flow Rates in Loading Lines . 3 3.5 Rate of Rise of Liquid in the Cargo Tank . 3 3.7 Loading Rates for Ballast T
10、anks 3 SECTION 3 Gas Testing Equipment . 4 1 Alarm Functions on Gas Measuring Instruments . 4 3 Sampling Lines . 4 SECTION 4 Enclosed Spaces 5 1 Vapor Detection Equipment for Toxic Gases 5 3 Pump Room Communication Systems . 5 5 Pump Room Operational Precautions 5 5.1 Maintenance of Electrical Equip
11、ment in the Pump Room 5 5.3 Additional Safety Systems and Arrangements 5 SECTION 5 Shipboard Operations 7 1 Cargo Vapor Emission Control (VEC) Systems 7 3 Tank Cleaning . 7 3.1 Tank Water Washing in a Non-Inert Atmosphere 7 3.3 Precautions for Tank Water Washing 7 5 Gas Freeing 8 5.1 Portable Fans 8
12、 7 Crude Oil Washing 8 7.1 Cautionary Notice 8 9 Cargo Measurement, Ullaging, Dipping, and Sampling 8 9.1 Introduction of Equipment into a Tank . 8 SECTION 6 Surveys After Construction . 9 1 General . 9 3 ABS-ISGOTT Notation 9 3.1 Annual Surveys . 9 3.3 Special Periodical Surveys 10 iv ABSGUIDE FOR
13、IMPLEMENTATION OF INTERNATIONAL SAFETY GUIDE FOR OIL TANKERS (ISGOTT) .2016 Section 1: General SECTION 1 General 1 Introduction This Guide provides criteria for the notation ABS-ISGOTT, which is offered to Oil Carriers which are provided with the supplementary equipment and arrangements specified he
14、rein. The requirements and notation identified in this Guide are optional for classification. Where the notation identified in this Guide is requested, the requirements herein are in addition to any and all applicable Oil Carrier requirements in the relevant ABS Rules and Guides as well as those in
15、all applicable national or international regulations. 3 Application 3.1 Vessels Self-propelled vessels classed in accordance with the ABS Rules for Building and Classing Steel Vessels (Steel Vessel Rules) in Part 5A and Part 5B, Pt 2, Ch. 2 (Common Structural Rules for Double Hull Oil Tankers), Part
16、 5C, Chapter 1 Vessels Intended to Carry Oil in Bulk (150 meters (492 feet) or more in Length or in Part 5C, Chapter 2 Vessels Intended to Carry Oil in Bulk (under 150 meters (492 feet) are eligible for the ABS-ISGOTT notation. 3.3 Regulatory Requirements Compliance with regulatory requirements is c
17、onsidered a prerequisite for the optional notation. Therefore; vessels are to comply with all applicable IMO safety requirements for the type of vessel involved. This may be established by the submittal of the appropriate IMO certificates or through independent verification by ABS. 5 Class Notations
18、 Vessels that meet the criteria in this Guide will be eligible to receive the optional notation ABS-ISGOTT. 7 Reference Documents Implementation of International Safety Guide for Oil Tankers (ISGOTT) ABS Rules for Building and Classing Steel Vessels (Steel Vessel Rules) ABSGUIDE FOR IMPLEMENTATION O
19、F INTERNATIONAL SAFETY GUIDE FOR OIL TANKERS (ISGOTT) .2016 1 Section 1 General 9 Plans and Details to be Submitted The following documentation, as applicable, is to be submitted for review: Operation Manuals for Cargo and Ballast systems Loading rate calculations for Cargo and Ballast tanks Details
20、 of gas measuring instruments and sampling system for the gas monitoring system Details of vapor detection equipment for toxic gas for the vessel carring oils containing Benzene Details of and operations manual for the pump room communications system Detailed maintenance instructions for the eletric
21、al equipment in the pump room Details of and operations manual for fixed gas detection system in the pumproom Details of and operations manual for the oxygen sampling system Details of and operations manual for temperature monitoring devices Details of the high level bilge alarm system for pumproom
22、Detail arrangements of the manually activated trips for the main cargo pumps Detail of the spray arrestors around the glands of rotary cargo pumps Cargo pump shaft seal arrangements and leakage alarm system Backup fire-fighting system for cargo pump room Arrangement of Emergency Escape Breathing Dev
23、ices (EEBD) in pumproom Details of vapor manifold arrangements Arrangement and calculation for tank water wahsing system Detail of portable tank washing machines, hoses and portable hoses Operations manual for tank washing system Arangement and details of gas-freeing system and details of portable f
24、ans or blowers Crude oil washing system and operational manual Operations Manual for the cargo measurement, ullaging, dipping or sampling equipment 2 ABSGUIDE FOR IMPLEMENTATION OF INTERNATIONAL SAFETY GUIDE FOR OIL TANKERS (ISGOTT) .2016 Section 2: Cargo and Ballast Systems SECTION 2 Cargo and Ball
25、ast Systems 1 Operations Manual Up-to-date drawings and information on the cargo and ballast systems, as well as an Operations Manual describing how the cargo and ballast systems are arranged and operates are to be provided onboard. Arrangements to protect the cargo piping system from overpressuriza
26、tion and shock loads are to be provided. 3 Loading Rates 3.1 Venting Arrangements The Master of the vessel is to have information available that identifies the maximum permissible loading rates for each cargo and ballast tank and, where tanks have a combined venting system, for each group of cargo o
27、r ballast tanks. When determining the maximum loading rates, a maximum venting line velocity is not to exceed 36 meters per second. The volume throughputs may be added together where a common vent riser is used, but the maximum flow rate is not to be exceeded anywhere within the system. 3.3 Flow Rat
28、es in Loading Lines The maximum loading rates for each cargo tank are to be calculated and identified in the Operations Manual. All possible cargoes and loading scenarios for each cargo tank are to be addressed and the maximum loading rates are to be based on the following: i) A maximum linear veloc
29、ity of 1 meter/second at the tank inlet for the initial loading rate for static accumulator cargoes into non-inerted tanks until the inlet is submerged. ii) A maximum linear velocity of 7 meters/second for bulk loading static accumulator cargoes into non-inerted tanks once the inlet is submerged. ii
30、i) A maximum linear velocity of 12 meters/second for loading nonstatic accumulator cargoes and also for loading static accumulator cargoes into inerted tanks. Where a number of tanks are loaded through a common manifold, the limiting maximum loading rate may be determined by the flow rate through th
31、e manifold or individual drop lines. In such cases, the Operations Manual is to identify the number and location of cargo tank valves that may be open simultaneously in order to maintain a suitable loading rate for the particular loading operation. Offshore floating hoses that meet OCIMF guidelines
32、and have a nominal diameter of less than 400 mm may be considered suitable for continuous operation at a flow velocity of up to 21 m/s. Offshore floating hoses that have a diameter greater than 400 mm may be considered suitable for continuous operations at a flow velocity of up to15 m/s. However, th
33、e maximum loading rate may be controlled by the size of the ships loading line inboard of where the hose is connected. 3.5 Rate of Rise of Liquid in the Cargo Tank The maximum loading rate for a cargo tank is not to result in a rate of rise of liquid of more than 150 mm/minute. 3.7 Loading Rates for
34、 Ballast Tanks Loading rates for ballast tanks are to be determined in the same manner as for cargo tanks, taking into account the size of vent outlets using a vent velocity of 36 meters/second. Liquid filling rates are to be calculated using a maximum pipeline flow rate of 12 meters/second and a si
35、milar rate of rise of liquid of 150 mm/minute. ABSGUIDE FOR IMPLEMENTATION OF INTERNATIONAL SAFETY GUIDE FOR OIL TANKERS (ISGOTT) .2016 3 Section 3: Gas Testing Equipment SECTION 3 Gas Testing Equipment 1 Alarm Functions on Gas Measuring Instruments Audible alarms are only to be fitted to gas measur
36、ing instruments necessary for personnel safety, such as a personal gas alarm monitor. Analytical instruments that provide numerical values for gases and vapors for enclosed space entry certification do not need to have an alarm function. Instruments with an alarm capability are to be designed so tha
37、t the alarm inhibit and activate function cannot be changed by the instrument operator. 3 Sampling Lines Sampling lines of gas monitoring systems are to be impervious to the gases present in the atmospheres being monitored. They are also to be resistant to the effects of hot wash water. 4 ABSGUIDE F
38、OR IMPLEMENTATION OF INTERNATIONAL SAFETY GUIDE FOR OIL TANKERS (ISGOTT) .2016 Section 4: Enclosed Spaces SECTION 4 Enclosed Spaces 1 Vapor Detection Equipment for Toxic Gases Vapor detection equipment is to be provided on board all vessels intended to carry cargoes in which benzene may be present.
39、3 Pump Room Communication Systems i) A communication system is to be provided between the pump room, navigation bridge, engine room and cargo control room. In addition, audible and visual repeaters for essential alarm systems, such as the general alarm and the machinery space fixed extinguishing sys
40、tem alarm, are to be provided within the pump room. ii) Arrangements are to be established to enable effective communication to be maintained at all times between personnel within the pump room and those outside. The Operations Manual is to specify that regular communication checks are to be made at
41、 prearranged intervals and the system is to be arranged so that failure to respond is to raise the alarm. iii) VHF/UHF communication is not to be used as a primary communication method unless it can be established that such arrangements will provide a reliable means of communication. Where communica
42、tion by VHF/UHF is determined acceptable, the Operations Manual is to require that (1) a standby person be available who could be positioned on the pump room top in case communications through VHF/UHF become difficult during all cargo operations and (2) that a mean for the individual entering into t
43、he pump room to communicate with the standby person is readily available. iv) Notices are to be displayed at the pump room entrance prohibiting entry without formal permission. 5 Pump Room Operational Precautions 5.1 Maintenance of Electrical Equipment in the Pump Room The vessel is to be provided w
44、ith detailed maintenance instructions for the electrical equipment fitted in the pump room. 5.3 Additional Safety Systems and Arrangements The following arrangements to enhance the safety of pump rooms are to be provided on board. In addition, appropriate operations manuals are to be provided on boa
45、rd for the equipment and systems listed below: i) A fixed gas detection system is to be fitted in the pump room in accordance with 5C-1-7/17.1.4 of the Steel Vessel Rules. The Operations Manual for the fixed gas detection system is to contain procedures for the regular inspection and calibration of
46、the system. Procedures are also to be developed and contained within the Operations Manual with regard to the actions to be taken in the event of an alarm occurring, and include instructions for vacating the space and stopping the cargo pumps. The gas detection is to monitor multiple levels within t
47、he pump room, not just the lower area. ii) A fixed sampling arrangement is to be provided to enable the oxygen content within the pump room to be monitored from the deck by a portable meter prior to pump room entry. The arrangement is to ensure that remote parts of the pump room can be monitored. AB
48、SGUIDE FOR IMPLEMENTATION OF INTERNATIONAL SAFETY GUIDE FOR OIL TANKERS (ISGOTT) .2016 5 Section 4 Enclosed Spaces iii) Temperature monitoring devices are to be fitted to pumps located in pump room in order to provide remote indication of the temperature of pump casings, bearings and bulkhead seals,
49、 in accordance with 5C-1-7/3.3.1(e) of the Steel Vessel Rules. Procedures are to be developed with regard to the actions to be taken in the event of an alarm occurring and are to be contained in the Operations Manual. iv) In addition to the cargo control room and the navigating bridge as required by 5C-1-7/7.5 of the Steel Vessel Rules, the high level bilge alarm for the pump room is also to activate audible and visual alarms in the engine room. v) Manually activated trips for the main cargo pumps are to be provided at the lower pump room le
