Section 2 Abbreviations and definitions
Clasification Society 2024 - Version 9.40
Clasifications Register Guidance Information - Guidance Notes for Appraisal of Flexible Pipe Systems, September 2018 - Chapter 1 Appraisal of Flexible Pipe Systems - Section 2 Abbreviations and definitions

Section 2 Abbreviations and definitions

2.1 Abbreviations

2.1.1 The following abbreviations are applicable to these Guidance Notes unless otherwise stated.

AiP Approval in Principle
CRS Comment Response Sheet
DAD Design Appraisal Document
FAT Factory Acceptance Test
FLIP Flow-induced Pulsation
FMECA Failure Mode, Effects and Criticality Analysis
IRN Inspection Release Note
ITP Inspection and Test Plans
IVA Independent Verification Agent
LR Clasifications Register
NCR Non-conformance Report
NDE Non-destructive Examination
PQA Production Quality Assurance
SCA Software Conformity Assessment
SECE Safety and Environmental Critical Element
TA Type Approval
VWI Verification Work Instruction

2.2 Definitions

2.2.1 The following definitions are applicable to these Guidance Notes.

2.2.2 Company – Owner, Operator, designer, consultant or contractor.

2.2.3 Flexible pipe – An assembly of a pipe body and two end fittings (including integral flanges) where the pipe body consists of a combination of multiple layers of helically wound metallic strips, composite materials, tapes and extruded thermoplastics, forming a pressure-containing conduit, and the pipe structure allows large deflections. Unbonded flexible pipe, as opposed to bonded flexible pipe, allows for relative movement between layers.

2.2.4 Flexible pipe system – A flexible pipe from flange to flange and associated ancillary equipment attached to it, directly or indirectly. For the purposes of this document, a flexible pipe system implies static/dynamic riser, static flowline or static/dynamic jumper system.

2.2.5 Ancillary equipment – Ancillary equipment including, but not limited to, pull-in head, I-tube/J-tube seal, bend stiffener, bend stiffener connector, bend restrictor, bend limiter, bellmouth, buoyancy module, ballast module, buoy, tether/chain system (tether element, shackle and/or hook), tether clamp, tether base, riser clamp, riser base, anode, connector, hub connection clamp, impact protection and fire protection.

2.2.6 Interfaces – Depending on the location of installation sub-sea or on-land, flexible pipe systems interface with wide range of features and structures. These include, but are not limited to, floating structure, hang-off structure, clashing with other risers or subsea structures, hold-down/hold-back systems, seabed, tie-in structures, conduit system (for pipe-in-pipe system), end termination systems, etc.

2.2.7 Appraisal – The process of assessing a system's compliance with stated requirements, for the purpose of independently providing confidence to an Owner, Operator or other interested party. It comprises desktop review and/ or physical surveillance activities.


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