Applying liquid coatings by spray methods
URN: SEMMPF228
Business Sectors (Suites): Materials Processing and Finishing Suite 2
Developed by: Enginuity
Approved on:
30 Mar 2020
Overview
| This standard identifies the competences you need to apply liquid coatings by spray methods, in accordance with approved procedures. You will be expected to confirm with the authorised person, such as your immediate supervisor, that the equipment is ready for the spray coating operations to be performed and that all the required components/materials and consumables are available. You will be required to operate the spray coating equipment in line with safe working practices and approved procedures, continuously monitoring the spray coating operations and where necessary, making minor adjustments or seeking help from the authorised person to make the required adjustments, in order to ensure that the work output is to the required quality. Meeting production targets will be an important issue and your production records must show consistent and satisfactory performance. Your responsibilities will require you to comply with organisational policy and procedures for the spray coating activities undertaken and to report any problems with these activities that you cannot personally resolve, or are outside your permitted authority, to the relevant people. You will be expected to work to instructions, with a minimum of supervision, taking personal responsibility for your actions and for the quality of the work that you carry out. Your underpinning knowledge will be sufficient to provide a sound basis for your work and will enable you to adopt an informed approach to applying spray coating procedures. You will have an understanding of the spray coating process and its application and will know about the equipment, materials and consumables in adequate depth to provide a sound background for carrying out the activities, recognising and reporting coating defects and ensuring that completed components are to the required specification. You will understand the safety precautions required when working with spray coating equipment and coatings. You will be required to demonstrate safe working practices throughout. You will also understand your responsibilities for safety and the importance of taking the necessary safeguards to protect yourself and others in the workplace. |
Performance criteria
You must be able to:
| 1. work safely at all times, complying with health and safety, environmental and other relevant regulations, directives and guidelines 2. follow work instructions and specifications to apply liquid coatings by spraying 3. ensure the material surfaces to be treated are prepared for the finishing operations 4. check that the finishing equipment and coatings are set up and maintained at satisfactory operating conditions and levels 5. carry out the treatment process following operating procedures and to meet the component specification 6. ensure that the treated workpiece achieves the required characteristics and meets the finishing specification 7. deal promptly and effectively with problems within your control and report those that cannot be solved 8. ensure that work records are completed, stored securely and available to others, as per organisational requirements 9. leave the work area in a safe condition on completion of the activities, as per organisational and legal requirements |
Knowledge and Understanding
You need to know and understand:
| 1. the specific safety precautions to be taken whilst carrying out the activities (including any specific legislation, regulations or codes of practice relating to the activities, equipment or materials) 2. the health and safety requirements of the work area and the activities, and the responsibility these requirements place on you 3. the hazards associated with the activities, and how to minimise them and reduce risks 4. the personal protective equipment and clothing (PPE) to be worn during the activities 5. the basic operation of the spray coating equipment 6. how to prepare and mix spray coating materials 7. how to examine components for visual defects, prior to coating them 8. the pre-treatments carried out prior to the application of liquid coatings by spraying 9. the methods used to hold/secure components during the spray coating process 10. the importance of monitoring equipment settings during the spray coating process 11. how to make adjustments to coating solutions 12. the procedure for the safe disposal of waste materials 13. the types of adjustment that can be made to equipment settings to maintain component quality 14. how to identify spray coating processing faults (including missed, excessive and low coating, rippling, blow holes, contamination, poor coating adhesion and colour) 15. the methods used to cure coated components 16. the basic quality checks to be carried out on spray coated components 17. how to pack and store finished components to avoid damage 18. the importance of completing the production documentation throughout the spray coating process 19. the importance of keeping the coating plant and equipment clean 20. the extent of your own responsibility, and whom you should report to if you have problems that you cannot resolve 21. how to access, use and maintain information to comply with organisational requirements and legislation |
Scope/range
Scope Performance
| 1. Applying liquid coatings by spray methods, carry out all of the following activities: 1. use the correct issue of process documentation (specifications, job cards, quality control documentation) 2. adhere to health and safety regulations, systems and procedures to realise a safe system of work 3. confirm with the authorised person that the equipment is ready for carrying out the coating operations 4. maintain sufficient quantities of process materials and components during the production cycle 5. seek any necessary instructions/training on the operation of the coating equipment 6. follow the defined operating procedures to ensure that the equipment settings and liquid coatings are adjusted (either by yourself or the authorised person) to maintain the correct customer specification 7. leave the work area in a safe and clean condition 2. Apply liquid coatings by spraying to one of the following substrates: 1. ferrous 2. non-ferrous 3. composites 4. plastic 5. wood 3. Apply finishes using one of the following types of spray gun: 1. non-compliant or conventional air atomising 2. electrostatic rotating head, manual 3. air atomising HVLP 4. electrostatic air atomising HVLP 5. air atomising compliant 6. electrostatic conventional air atomising 7. airless 8. electrostatic airless 9. air assisted airless 10. electrostatic air assisted airless 4. Carry out four of the following activities during the liquid coating process: 1. segregate any defective components (pre and post coating) 2. carry out pre-treatments (cleaning, de greasing, re-activating) 3. prepare liquid coatings 4. masking 5. jigging 6. wiring 7. load components safely into plant 8. monitor liquid coatings and equipment settings (time, speed temperature, evaporation, viscosity) 9. safely make adjustments to liquid coatings and equipment settings 10. cure completed components (by air, thermal, induction, infra-red or ultra-violet methods) 5. Identify all of the following types of defects in spray coated components: 1. missed coating 2. blow holes (holidays) 3. excessive coating 4. rippling (orange peel) 5. low coating 6. contamination 7. incorrect colour 8. poor coating adhesion 6. Carry out four of the following checks on spray coated components: 1. freedom from damage 2. freedom from contamination 3. surface quality/appearance 4. completeness of coating operations 5. coating thickness 6. gloss level 7. colour uniformity 8. coating adhesion 7. Check spray coatings applied to components comply with one of the following quality standards: 1. military or aviation 2. current industry standards or codes of practice 3. international standards 4. company standards and requirements 5. customer standards and requirements |
Scope Knowledge
Values
Behaviours
Skills
Glossary
Links To Other NOS
External Links
Version Number
2
Indicative Review Date
31 Mar 2023
Validity
Current
Status
Original
Originating Organisation
Semta
Original URN
MPF2.28
Relevant Occupations
Engineering and Manufacturing Technologies, Manufacturing Technologies, Process Operatives, Process, Plant and Machine Operatives
SOC Code
8115
Keywords
Engineering; manufacturing; processing; applying; spraying; liquid coating; substrates; air; electrostatic