SSL considers functional safety to be a core activity of its business. The following table lists our experience and strengths across the functional safety life-cycle (IEC61511).

IEC61511
Lifecycle Phase

SSL Profile

Clients

Hazard ID

Hundreds of reviews facilitated across several sectors. See table 2 for more detail. Training and qualification of leaders and participants across NZ.

All MHF & Petroleum Clients
20+ years’ experience

SIL Determination & Risk Assessment

Hundreds of scenarios assessed to determine SIL levels using LOPA and Risk Graph techniques.

Several SIL assessment procedures developed.
LOPA & SIL training conducted across NZ and Australia.

All MHF & Petroleum Clients
20+ years’ experience

SIS Requirements Specification (SRS)

Development of several company standards and specification of numerous safety functions.
SSL have three TUV certified Functional Safety Engineers.

Ballance Agri-nutrients
Todd Energy
Vector Ltd
Contact Energy
Evonik
Top Energy

Design

Use of SIL Solver/ ExSILEntia to design and verify the design in accordance with the SRS

Ballance
Origin
Evonik
STOS
Todd Energy
Vector
Contact Energy
Top Energy

Operation and Maintenance

Operational procedures (bypass, proof testing) to satisfy compliance with standards.

Ballance Agri-nutrients
Vector Ltd
Pan PAC

Modifications

Design of MoC systems for plant and software changes

MoC audits of many companies
Westside NZ Ltd
Pan Pac
TOP Energy
Ngati Tuwharetoa

Functional Safety Management Plan

Developed several functional safety management systems and audited many companies against the IEC standard.

Ballance
Vector
Westside
Pan Pac
Greymouth Petroleum              City Rail Link (Victoria)

Functional Safety Assessments/ Audits

From Functional Safety Assessment of individual SIL functions through to full Functional Safety Management System Audits

Refining NZ
Pan Pac Forest Products
Evonik Industries
Contact Energy

IEC61511