Iranian Classification Society Rules
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2015
Guidance for
Floating Liquefied Gas Units
GC-13-E
APPLICATION OF
1. Unless expressly specified otherwise, the requirements in the Guidance apply to Floating Liquefied Gas Units for which contracts for construction are signed on or after 1 July 2015.
CONTENTS
CHAPTER 1 GENERAL
Section 1 General
Section 2 Definitions
CHAPTER 2 CLASSIFICATION AND SURVEYS
Section 1 General
Section 3 Surveys
CHAPTER 3 DESIGN CONDITION
Section 1 General
Section 2 Design Principles
Section 3 Corrosion Control Means and Corrosion Margins
Section 4 Design Loads
CHAPTER 4 MATERIALS AND WELDING
Section 1 General
CHAPTER 5 HULL CONSTRUCTION AND EQUIPMENT
Section 1 General
Section 2 Survival Capability and Location of Cargo Tanks
Section 3 Longitudinal Strength
Section 4 Structural Design and Analysis of the Hull
Section 5 Design and Analysis of Other Major Hull Structural Features
Section 6 Direct Strength Assessment
Section 7 Fatigue Strength Assessment
Section 8 Hull Arrangements
Section 9 Cargo Containment
Section 10 Hull Equipment
CHAPTER 6 POSITIONING SYSTEMS
CHAPTER 7 HAZARDOUS AREA
Section 1 General
Section 2 Ventilation
CHAPTER 8 FIRE PROTECTION, MEANS OF ESCAPE AND FIRE EXTINCTION
Section 1 General
Section 2 Prevention of Fire and Explosion
Section 3 SUPPRESSION OF FIRE
Section 4 Means of Escape
CHAPTER 9 MACHINERY INSTALLATIONS
Section 1 General
Section 2 Piping Systems for Cargo Tanks
Section 3 Use of Natural Gas as Fuel
CHAPTER 10 ELECTRICAL EQUIPMENT AND CONTROL SYSTEMS
Section 1 Electrical Equipment
Section 2 Control Systems
CHAPTER 11 PERSONNEL PROTECTION
CHAPTER 12 REGASIFICATION SYSTEMS
Section 1 General
Section 2 Design of Regasification Systems
3. Systems that contain significant energy are to be depressurised during an emergency situation.
5. During an dimensioning accidental event, the integrity and functionality of depressurising piping and valves is to be maintained for the required period of time in order to ensure that success- ful depressurization can be performed.
3. In case of relief to cargo tanks, the effect of routing high pressure LNG/NG to the cargo tank is to be documented.
Section 3 Regasification System Equipment
CHAPTER 13 PROCESS SYSTEMS
Section 1 General
(1) The following plans and documents are to be submitted for the approval of the Society at classification survey during construction before the work is commenced.
Section 2 Design of Process Systems
Section 3 Process System Equipment
Section 4 Process Support Systems
CHAPTER 14 LOADING AND OFFLOADING SYSTEMS
Section 1 General
Section 2 Design of Loading and Offloading Systems
CHAPTER 15 IMPORT AND EXPORT SYSTEM
Section 1 General
GUIDANCE FOR FLOATING LIQUEFIED GAS UNITS
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