Introduction

The HAZID and HAZOP form part of the risk assessment process that is required for acceptance by the regulatory bodies.

HAZID is the identification and classification of the hazards.

The risk assessment of the identified HAZID's is conducted continually during design. All possible hazards being identified and recorded as the design progresses.

Periodically, the list of hazards identified will be classified and where actions required / taken to reduce the level / possibility of each hazard occuring will be addressed.

 

HAZOP is the 'Hazard and Operability'. This is a similar process to the HAZID, however, deals with the affects on the 'system' operation if high or low temperatures / pressures occur.

Notable Projects

Project Name
Project Number
Notes
BAOBAB
Notable due to the Pipe in Pipe nature
Greater Plutonio
Deep Water, using SAFEBUCK
Qatar Gas
KW

Large Diameter Pipe
Shallow Water
Snake Lay Solution

 

Other Projects

Project Name
Project Number Notes
EPC2B
KW 0728
Controlled Buckles on Existing Pipeline Crossings
Algeria Pipeline
KW 1071
Onshore
Deep Panuke
 

 

Codes & Standards

Company
Title
Doc Number / Date
SAFEBUCK JIP
Safe Design of Pipelines with Lateral Buckling - Design Guideline
DNV
Global Buckling of Submarine Pipelines
DNV-RP-F110
DNV
Submarine Pipeline Systems
(Strain Based Limit State)
DNV-OS-F101

 

Course Notes

Author
Title
Notes
C. Sicilia
Lateral Buckling Assessment and Mitigation Design
Trevor Gee
IBC
Pipeline Course

 

Books

Author
Title
Chapter
Mikael Braestrup
Design and Installation of Marine Pipelines
6.5

 

Papers

Author
Title
Notes
Hobbes, R. E.
In-service Buckling of Heated Pipelines, Journal of transportation Engineering, ASCE, Vol. 110, No.2, March 1984, pp. 175-189
Approximate method for determining propensity for lateral buckling
Taylor, N. and Gan, A. B
Submarine pipeline Buckling – Imperfection Studies, Jour. Of Thin-walled Structures, Vol. 4, 1986, pp 295-323
A developed version of ‘Hobbs’, including the effects of initial OOS

 

Prepared Calculations

Title / Software
Description
Owner / Athor
Hobbs / Excel
Predicts the onset of buckling
KAJW / CSG

 

Related Subjects

 

 

 

HAZID / HAZOP

Return

Conducting the hazard risk assessment quantifies each risk identified. One method used for this uses the 4 tables presented here. The 'Severity' and 'Probability' of each item is quantified using the tables above.

Once quantified, the other tables are used to determine the risk level and any required actions.

This process is conducted several times during the design with the intention of reducing all risks to as low as reasonably possible (ALARP).

It also provides a quick reference to highlight an areas that can be considered high risk and therefore require further attention.