Analysing samples in downstream operations

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


This standard is about your competence in analysing samples to confirm quality.

This standard deals with the following:

1 Prepare to analyse samples
2 Analyse samples to confirm quality
3 Communicate results of analysis

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 11 of Refinery Field Operations NOS – version April 2005

Performance criteria

You must be able to:

P1 obtain containers appropriate for the sample material
P2 ensure that containers obtained are clean before use
P3 ensure that suitable analysis equipment is set up and cleaned correctly
P4 ensure that the analysis equipment is fit for purpose
P5 prepare for analysis in the appropriate designated area
P6 ensure that the sample preparations match schedule, instructions and procedures for in house or offsite testing
P7 perform analyses in the appropriate designated area
P8 analyse the samples in accordance with standard test method
P9 leave equipment in a clean and safe condition ready for re-use
P10 leave the work area in a safe and clean condition
P11 retain the sample in accordance with procedures
P12 ensure that retained samples are secure and labelled
P13 complete all relevant documentation
P14 identify abnormal readings and correctly report them
P15 inform the appropriate personnel that the samples have been analysed
P16 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 and organisational requirements
K3 how to interpret operational requirements
K4 how to work with and within the Permit to Work system
K5 how to ensure that analysis equipment is fit for purpose
K6 why it is essential to clean equipment
K7 the incidents which might occur while analysing samples and the action to be taken
K8 the principles of analysis
K9 the importance of matching schedule and instructions when analysing samples
K10 the location of the nearest safety equipment
K11 how to secure and label samples
K12 how to communicate effectively
K13 who to report abnormalities to
K14 the likely consequences of recording inaccurately
K15 the possible cause of unexpected results


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 n.e.c, Process, Plant and Machine Operatives

SOC Code



analysing, samples, prepare, confirm quality, communicate, results