Heat, weld or solder heritage metalwork
Overview
This standard is about heating, welding or soldering heritage metalwork, interpreting information, adopting safe, healthy and environmentally responsible work practices, selecting and using materials, components, tools and equipment, in accordance with organisational requirements which are equal to or exceed current statutory and legislative requirements
This standard is for people working in the occupational area of heritage skills and can be used by operatives, supervisors and managers
Performance criteria
You must be able to:
Interpretation of information
P1 interpret the information relating to the work and resources as relevant to geographical location, seasonal and climatic conditions to confirm its relevance for the following:
• drawings
• specifications
• schedules
• method statements
• risk assessments
• manufacturers’ and suppliers’ information
• oral, written or electronic instructions
• current regulations, legislation, official guidance and permits
Safe work practices
P2 comply with the relevant, current legislation and official guidance to carry out the work and maintain safe and healthy work practices relating to the following:
• methods of work
• safe use of appropriate personal protective equipment (PPE)
• safe use of access or lifting equipment
• safe use, storage and handling of materials, tools and equipment
• safe use of health and safety control equipment
• specific risks to occupational health and safety including mental health awareness
• specific risks associated with hazardous or asbestos containing materials
• specific risks associated with, heat, particulates, gas and electricity associated with processes, equipment and materials
Selection of resources
P3 select the required quantity and quality of resources for the methods of work for:
• materials and components
• tools and equipment
Minimise the risk of damage
P4 comply with organisational procedures to minimise the risk of damage to the work and surrounding area by:
• taking relevant steps to protect the work and its surrounding area from accidental or unintended damage
• working with an awareness of the environment in liaison with other occupations
• maintaining a safe, clear and tidy work area
• controlling and disposing of waste in accordance with current legislation
Meet the contract specification
P5 comply with the contract and specification information to heat, weld or solder heritage metalwork safely and efficiently by:
• demonstrating work skills to prepare, adjust and connect heritage metalwork using thermal processes:
- measure
- mark out
- prepare
- position
- secure
- heat
- weld
- braze
- solder
- finish
- inspect
• using and maintaining welding, brazing and soldering tools:
- hand tools
- portable power tools
- ancillary equipment
• heating metalwork to achieve the following:
- free components (thermal shock)
- heat treat
- reduce or remove rust
- adjust (localised)
• measuring, marking out, preparing, positioning and securing metal prior to welding, brazing or soldering
• preparing joint types to include:
- butt
- lap
- fillet
- corner
• joining, welding, brazing or soldering for three of the following metals:
- wrought iron
- cast iron
- other ferrous metals
- non-ferrous metals
• use at least two of the following heating and welding systems:
- oxygen and fuel gas
- manual metal arc
- metal inert gas shielded or metal active gas shielded
- tungsten inert gas shielded
• complete welded or brazed joints in at least three of the following positions:
- flat
- horizontal vertical
- vertical
- overhead
• finish joints to specification
• recognise and control the effects of applying heat to metals:
- distortion
- heat affected zone
• inspect joints using at least two of the following:
- visual
- dye penetrant
- macro etch
• inspect weld repairs and constructions using at least one of the following:
- measuring
- pressure testing
Allocated time
P6 complete the work within the estimated, allocated time, taking account of seasonal and climatic conditions, in accordance with organisational procedures, the programme of work and to meet the needs of other occupations and/or client
Knowledge and Understanding
You need to know and understand:
P1 Interpretation of information
K1 why organisational procedures have been developed and how they are implemented
K2 types of information, their source and how they are interpreted in relation to:
• drawings
• specifications
• schedules
• method statements
• risk assessments
• manufacturers’ and suppliers’ information
• contractual information
• current legislation, regulations, official guidance and permits including but not limited to listed buildings and scheduled monuments
• conservation reports and plans
• oral, written or electronic instructions
K3 the importance of organisational procedures to solve problems with the information, and why it is important to follow them
K4 information sources for relevant, current legislation, official guidance and site-specific requirements and how they are applied
P2 Safe work practices
K5 how emergencies should be responded to in accordance with organisational authorisation and personal skills in relation to:
• fires and the types of fire extinguishers and how and when they are used in relation to, but no tlimited to, water, CO2, foam and powder
• spillages and injuries
• emergencies relating to occupational activities
• identification of and reporting of hazardous substances including but not limited to asbestos containing materials and lead carbonate
K6 the organisational and site-specific security procedures for tools, plant and equipment in relation to:
• site
• workplace
• vehicles
• company
• operatives
• clients
• the general public and visitors
K7 how to report risks and hazards identified by the following:
• methods of work
• risk assessments
• personal assessment
• manufacturers’ technical information
• statutory regulations
• official guidance
• Control of Substances Hazardous to Health (COSHH)
K8 the accident reporting procedures and who is responsible for making the report
K9 why, when and how health and safety control equipment identified by the principles of prevention should be used in relation to:
• collective protective measures
• personal protective equipment (PPE)
• respiratory protective equipment (RPE)
• local exhaust ventilation (LEV)
K10 how to comply with environmentally responsible work practices to meet current legislation and official guidance when dealing with potential accidents, health hazards and the environment whilst working in the workplace in relation to:
• below ground level
• confined spaces
• working at height
• hot working
• tools, plant and equipment
• materials and substances
• moving and storing materials by manual handling and mechanical lifting
P3 Selection of resources
K11 why the characteristics, quality, uses, sustainability, suitability, limitations and defects associated with the resources are important and how defects should be reported
K12 why sustainable and ethical work practices and materials should be adopted
K13 the organisational procedures to select resources, why they have been developed and how they are used K14 how to confirm the resources and materials conform with the specification
K15 how the resources should be used and how any problems associated with the resources are reported in relation to:
• materials
• components and consumables, including but not limited to:
- gases
- filling rods
- wires
• welding, brazing and soldering equipment:
- hand tools
- portable power tools
- ancillary equipment
• digital equipment
K16 how to identify and report the hazards associated with the resources and methods of work and how they are managed with reference to method statements and risk assessments
K17 methods of calculating the quantity, length, area and wastage associated with the resources, method and procedure to work on heating, welding or soldering heritage metalwork
P4 Minimise the risk of damage
K18 how to protect work and its surrounding area from damage and the purpose of protection from general workplace activities, other operations and adverse weather conditions and how to minimise damage
K19 how to, and the importance of, carrying out the safe disposal of waste in accordance with the following:
• environmental responsibilities
• organisational procedures
• manufacturers’ information
• suppliers’ information
• statutory regulations
• official guidance
K20 why it is important to maintain a safe, clear and tidy work area
P5 Meet the contract specification
K21 how the methods of work to meet the specification are carried out, and how problems are identified and reported, by the application of knowledge for safe, healthy and environmental work practices, procedures and skills, relating to:
• the relevance of an assessment of significance
• how to recognise specific requirements for:
- structures of special interest
- traditional construction
- hard-to-treat buildings
- recognising historical significance
- working with official guidance and regulations for endangered and protected flora and fauna
• why it is important to recognise and report endangered and protected flora and fauna
• why it is important to maintain the principles of minimum intervention and reversible alterations
• why it is necessary to survey, label and record components
• why it is important to record the work carried out (written and digital formats)
• why it is important to validate appropriate ways in which the work should be carried out
• why it is important to recognise sensitive areas
• why it is important to maintain historical integrity
• why it is necessary to stop work at the point when guesswork begins and report findings
• why it is necessary to assess requirements for conservation of metalwork by joining and heating
• why it is important to identify damage and deterioration and the causes why it is important to identify the effects of loads, change stress regimes, strengthening and reinforcement techniques, to heat and join heritage metalwork
• why it is important to recognise the hazards and risks of heating and welding processes to others, existing fabric and environment, to include fire control methods
• how to identify metal properties including but not limited to:
- wrought iron
- pure iron
- cast iron
- plain carbon steel
- alloy steels
- brass
- copper
- bronze
- lead
- aluminium
- zinc
• how to heat treat metals:
- annealing
- normalising
- hardening
- tempering
• how to apply the principles and methods of joining and heating ferrous and non-ferrous metal
• the advantages and disadvantages of welding, brazing and soldering systems:
- oxygen and fuel gas
- manual metal arc
- metal inert gas shielded or metal active gas shielded
- tungsten inert gas shielded
• how to join metals by welding, soldering and brazing in all positions (flat, horizontal vertical, vertical and overhead)
• how to recognise and control the effects of applying heat to metals (distortion, heat affected zone)
• how to recognise and prepare joint types (butt, lap, fillet, corner)
• how to finish and dress joints
• how to inspect joints by:
- non-destructive testing (visual, x-ray and dye penetrates)
- destructive testing (bend test, tensile, nick break and macro etch)
• how to inspect weld repairs and constructions by:
- measuring
- pressure testing
• how to use and store welding, brazing and soldering gases
• how to use all welding, brazing and soldering tools:
- hand tools
- portable power tools
- ancillary equipment
• how to work at height using access equipment
• how to work with and in proximity to plant and machinery
• how and why operative care and maintenance of welding, brazing and soldering tools is carried out:
- hand tools
- portable power tools
- ancillary equipment
K22 the organisational procedures with respect to site behaviours, and recognise and action fairness, inclusion and respect within the working environment, and how to address and report inappropriate site behaviours K23 the importance of methods of work, interpersonal relations and communication and the needs of other occupations associated with heating, welding or soldering heritage metalwork
P6 Allocated time
K24 the programme of work to be carried out including the estimated and allocated time, and why deadlines should be kept or reported if likely to be missed
K25 the types of progress charts, timetables and estimated times and the organisational procedures for reporting circumstances which will affect the work programme