2015 ARKH-P7 Artic P

Definitions

Winterization refers to the process of preparing something for an upcoming winter.

Opened module ≠ winterized module ≠ contained module

Protecting against cold, icing, snow, wind, rain:

Personnel

Equipment

Asset

Operations

Providing optimum conditions to:

HSE performance

Production, flow assurance

Maintenance

Construction / pre-service phases

Pipelines, flexibles, risers

Pipes :

Coating

Foundations stability

Expansion loops

Heat tracing, insulation

Flexibles :

Non ferrous material behaviour against cold

Ice in annular due to condensation

Reel laying (radius) during cold weather cold

Storage under extreme cold conditions

Risers protection against ice loads

May be exposed to ridge sail & keels

Wear, shocks, ice gouging

Clamps (neoprene)

Local heating in moon pools

MATERIAL ISSUES

All cases must be assessed, not only structural components (pressure vessels – restart after shut down in winter).

T°C Amplitude between winter and summer may generate high loads that could be not taken into account in classical design codes.

ISO 19906 Arctic code for offshore structures

Why an International Standard ?

Race to the Arctic has begun; 25% Yet-To-Find Oil & Gas

Offshore oil and gas E&P operations in ice covered waters are currently underway in nine countries

Currently only four countries have Arctic Codes: Canada, Norway, Russia, United States

 wide variation in coverage, methods and age

Contractors working or proposing to work in these areas may not have the necessary experience

Harmonization of current codes, including integration of latest knowledge, will:

Ensure consistent approaches (ice loads, integrity)

Reduce approval times and save design effort