Maintaining the safety of downstream operations

Business Sectors (Suites): Downstream Operations
Developed by: Cogent
Approved on: 29 Mar 2019


This standard is about your contribution to the safety aspects of working in a processing environment.

The standard deals with the following:

1 Maintain the safety of plant and equipment under your control
2 Maintain the safety of self and others
3 Protect the environment

During this work you must take account of the relevant operational requirements and safe working practices AS THEY APPLY TO YOU.

This Standard is suitable for those working in the downstream fuel environment.

Previous Version:

Adapted from Unit 12 of Refinery Field Operations NOS – version April 2005

Performance criteria

You must be able to:

P1 co-ordinate the function tests and checks of safety and emergency equipment and alarms
P2 identify safety hazards
P3 take appropriate action on identification of safety hazards
P4 ensure that people within the work area are aware of the potential hazards and directed to a safe area as appropriate
P5 ensure that access to and egress from working area is maintained at all times
P6 keep the working area clean and tidy in accordance with requirements
P7 keep clear all escape routes and access to emergency and safety equipment
P8 ensure that only authorised people are allowed access to the work area
P9 ensure that safety equipment is in place and is operational
P10 identify equipment deficiencies and take appropriate action
P11 communicate relevant information clearly and promptly
P12 co-ordinate safe working practices in the designated area
P13 advise and consult with appropriate personnel prior to any discharge or emission
P14 ensure that the amount of material discharged into flare system is minimised
P15 ensure that the amount of pollutant discharged into dedicated drainage systems is minimised
P16 ensure that the level of atmospheric emissions is minimised
P17 ensure that noise levels are minimised
P18 work safely in accordance with operational requirements

Knowledge and Understanding

You need to know and understand:

​K1 how to select, use and care for PPE
K2 the implications of statutory andorganisational requirements
K3 how to interpret operational requirements
K4 the plant layout in the working area
K5 the potential hazards associated with the particular working area and major accident hazards for the site and the consequences of such events
K6 the position of other relevant areas outside the plant
K7 the types of activity occurring, and possible hazards, in areas adjacent to plant
K8 your own responsibilities and duties, including duties under current environmental legislation
K9 the procedures for obtaining emergency services
K10 the safety roles of immediate supervisors, colleagues and safety representatives
K11 the location and position of emergency exits, muster points and emergency equipment
K12 how to deal with the appropriate safety equipment (including breathing apparatus, fire fighting systems, external alarms when activated from the control room, override systems and their status, CCTV and video equipment, safety shower alarms, gas alarms, integrity of control equipment)
K13 the appropriate responses to fire and gas alarms on adjacent plant
K14 the potential hazards associated with work procedures and the safety precautions required
K15 the overall impact of refinery operations on the environment
K16 how to work with and within the Permit to Work system
K17 the appropriate actions to take on the identification of safety hazards
K18 how to keep the working area satisfactorily clean and tidy
K19 the procedures for allowing people in the work area
K20 how to identify and report defects in safety and operations equipment
K21 the appropriate actions to take on identification of equipment deficiencies
K22 the timescale for rectifying system faults
K23 the appropriate personnel with whom to consult and advise regarding discharges and emissions
K24 the specified limits for discharges and emissions into the environment
K25 how to minimise noise levels
K26 the classification of waste products
K27 the appropriate method of disposal for relevant waste classifications
K28 the need for discharge and emission limits and the implications for exceeding them
K29 how the overall environmental system operates
K30 the operating procedures which have the most potential for environmental impact


Scope Performance

Scope Knowledge





Links To Other NOS

External Links

Version Number


Indicative Review Date

29 Mar 2024





Originating Organisation


Original URN


Relevant Occupations

Engineering, Engineering and Manufacturing Technologies, Plant and Machine Operatives, Process, Plant and Machine Operatives

SOC Code



maintain, safety, plant, equipment, safety, self, others, environment