Contents
1. Introduction and Contacts..………………….P1
2. Qualifications Pack……….……...................P2
3. Glossary of Key Terms …………………………P3
4. OS Units……………………..…….….................P4
5. Annexure: Nomenclature for QP & OS.. P58
6. Assessment Criteria…..….….....................P60
Qualifications Pack – Construction Welder
(Electives: MIG/TIG/SMAW)
SECTOR: INFORMATION TECHNOLOGY- INFORMATION TECHNOLOGY ENABLED SERVICES (IT-
ITES)ces Helpdesk Attendant
Introduction
SECTOR: INFORMATION TECHNOLOGY- INFORMATION TECHNOLOGY ENABLED SERVICES
(IT-ITES)ces Helpdesk Attendant
OS describe what
individuals need to do, know and understand in order to carry out a particular job role or function
OS are
performance standards that individuals must achieve when carrying out functions in the workplace, together with specifications of the underpinning knowledge and understanding
CSDCI 204, Aashirwad Complex, D-1, Green Park, New Delhi - 110016 E-mail: [email protected]
SECTOR: CONSTRUCTION
SUB-SECTOR: Real Estate and Infrastructure Construction
OCCUPATION: Fabrication
REFERENCE ID: CON/Q1252
ALIGNED TO: NCO-2004/7212.20
Brief Job Description: Construction Welder is expected to perform welding in construction environment, keeping in line with all applicable safety and quality norms. Further, they shall be expected to perform grinding operations related to their work. The individual should possess good factual knowledge, and shall be able to maintain safe and quality work practices. Electives: Elective 1: MIG- This jobholder carries out MIG welding operations in 1G, 1F, 2G, 2F, 3G, 3F positions on carbon steel, stainless steel and other metals and alloy sections in fabrication yards and construction site within specified time and tolerance Elective 2: TIG- This jobholder carries out TIG welding operations in 1G, 1F, 2G, 2F, 3G, 3F positions on carbon steel, stainless steel and other metals and alloy sections in fabrication yards and construction site within specified time and tolerance
QUALIFICATIONS PACK - OCCUPATIONAL STANDARDS FOR CONSTRUCTION INDUSTRY
Qualifications Pack For Construction Welder MIG/TIG/SMAW
2
Elective 3: SMAW- This jobholder carries out SMAW welding operations in 1G, 1F, 2G, 2F, 3G, 3F positions on carbon steel, stainless steel and other metals and alloy sections in fabrication yards and construction site within specified time and tolerance
Personal Attributes: The individual is expected to be physically fit and mentally alert and safety cautious to be able to work across various location and height withstanding extreme condition while working. Moreover the individual should preferably not be suffering from any respiratory disorder, vision defects and skin allergies due to exposure to light and heat. They should have good communication skills and shall be able to work within a team to handle various welding tools and materials.
Qualifications Pack For Construction Welder MIG/TIG/SMAW
3
Qualifications Pack Code CON/Q1252
Job Role Construction Welder MIG/TIG/SMAW
Credits (NSQF) TBD Version number 1.0
Sector Construction Drafted on 07/06/2015
Sub-sector Real Estate and Infrastructure Construction
Last reviewed on 25/10/2017
Occupation Fabrication Next review date 25/10/2019
NSQC Clearance on
Job Role Construction Welder MIG, TIG ,SMAW
Role Description These job roles is responsible for performing welding on structural steel elements using MIG, TIG, SMAW process in 1G, 1F, 2G, 2F, 3G, 3F positions as per work requirement.
NSQF level 4
Minimum Educational Qualifications
Maximum Educational Qualifications
10th standard pass
Not Applicable
Prerequisite License or Training Certification as Tack Welder as per QP Code CON/Q1251
Minimum Job Entry Age 18 years
Experience 3 years site experience as a Tack Welder or equivalent
Applicable National Occupational
Standards (NOS)
Compulsory:
1. CON/N1206: Carry out grinding activities on structural
steel elements
2. CON/N8001: Work effectively in a team to deliver
desired results at the workplace
3. CON/N9001: Work according to personal health, safety
and environment protocol at construction site
Electives (mandatory to select at least one): Elective 1: Construction Welder MIG
1. CON/N1253: Carry out preparatory works for MIG
welding operations
2. CON/N1254: Carry out MIG welding as per requirement
in fabrication workshop or construction site
Elective 2: Construction Welder TIG
1. CON/N1255: Carry out preparatory works for TIG
welding operations
2. CON/N1256: Carry out tungsten inert gas welding as
per requirement in fabrication workshop or
construction site
Elective 3: Construction Welder SMAW
Job
Det
ails
Qualifications Pack For Construction Welder MIG/TIG/SMAW
4
1. CON/N1257: Carry out preparatory work for shielded
metal arc welding operations
2. CON/N1258: Carry out shielded metal arc welding as
per requirement in fabrication workshop or
construction site
Performance Criteria As described in the relevant OS units
Qualifications Pack For Construction Welder MIG/TIG/SMAW
5
Keywords / Terms Description
Sector Sector is conglomeration of different business operations having similar
business and interests. It may also be defined as a distinct subset of the
economy whose components share similar characteristics and interests. Sub-Sector Sub-Sector is derived from a further breakdown based on the characteristics
and interests of its components
Occupation Occupation is a set of job roles, which perform similar/related set of
functions in an industry Job role Job role defines a unique set of functions that together form a unique
employment opportunity in an organization. Occupational Standards (OS)
OS specify the standards of performance an individual must achieve when carrying out a function in the workplace, together with the knowledge and understanding they need to meet the standard consistently. Occupational Standards are applicable both in the Indian contexts.
Performance Criteria Performance Criteria are statements that together specify the standard of performance required when carrying out a task.
Qualifications Pack (QP) Qualifications Pack comprises the set of OS, together with the educational, training and other criteria required to perform a job role. A Qualification Pack is assigned a unique qualification pack code
Qualification Pack Code Qualification Pack Code is a unique reference code that identifies a
qualifications pack. Electives Electives are NOS/set of NOS that are identified by the sector as contributive
to specialization in a job role. There may be multiple electives within a QP for each specialized job role. Trainees must select at least one elective for the successful completion of a QP with Electives.
Options Options are NOS/set of NOS that are identified by the sector as additional skills. There may be multiple options within a QP. It is not mandatory to select any of the options to complete a QP with Options.
National Occupational Standards (NOS)
NOS are Occupational Standards which apply uniquely in the Indian context. Scope Scope is the set of statements specifying the range of variables that an
individual may have to deal with in carrying out the function which have a critical impact on the quality of performance required.
Knowledge and Understanding
Knowledge and Understanding are statements which together specify the
technical, generic, professional and organizational specific knowledge that an individual needs in order to perform to the required standard
Organizational Context Organizational Context includes the way the organization is structured and how it operates, including the extent of operative knowledge managers have of their relevant areas of responsibility.
Technical Knowledge Technical Knowledge is the specific knowledge needed to accomplish specific designated responsibilities.
Core Skills / Generic Skills Core Skills or Generic Skills are a group of skills that are key to learning and working in today’s world. These skills are typically needed in any work environment. In the context of the OS, these include communication related skills that are applicable to most job roles.
Def
init
ion
s
Qualifications Pack For Construction Welder MIG/TIG/SMAW
6
Keywords /Terms Description
CON Construction
NSQF National Skill Qualifications Framework
QP Qualification Pack
OS Occupational Standards
MIG Metal Inert Gas
TIG Tungsten Inert Gas
SMAW Shielded Metal Arc Welding
TBD To Be Decided
Acr
on
yms
CON/N1206 Carry out grinding activities on structural elements
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Overview This NOS covers the skills and knowledge required by a workman to be proficient in carrying out grinding activities on structural steel elements
CON/N1206 Carry out grinding activities on structural elements
8
Unit Code CON/N1206
Unit Title (Task)
Carry out grinding activities on structural elements
Description This unit describes the skills and knowledge required to carry out grinding activities on structural steel elements
Scope The scope covers the following:
Carry out preparatory works for grinding structural elements(rolled section,
tubular section, plate section and other casting) of thickness ranging from
3.1mm to 100 mm
Grind the structural elements( rolled section, tubular section, plate section
and other casting) of thickness ranging from 3.1mm to 100 mm to required
dimensions as per instruction
Performance Criteria (PC) w.r.t. the Scope
Element Performance Criteria
Carry out preparatory works for grinding structural elements(rolled section, tubular section, plate section and other casting) of thickness ranging from 3.1mm to 100 mm
To be competent, the user / individual on the job must be able to:
PC1. ensure that the grinder is in proper working condition
PC2. check that guard is installed on the machine and is secure and effective
PC3. check and notify any inadequacy like incorrect type of grinder, incorrect
consumable issued etc. in the grinding tool to appropriate authority
PC4. check the accessibility (in between joints, large distance from power source
etc.)of the grinder for the work
PC5. identify the location of surface to be grinded
PC6. clean the metal surface to remove any foreign matter like dust, rust, paint,
oil etc.
PC7. clamp and fix the metal before grinding
PC8. select appropriate consumables as per work requirement
Grind the structural elements(rolled section, tubular section, plate section and other casting) of thickness ranging from 3.1mm to 100 mm to required dimensions as per instruction
PC9. gather and identify information from superiors regarding the dimensions of
Grinding, angle of grinding etc.
PC10. select proper body position so that hand movements are comfortable and
smooth
PC11. move the grinding tool in desired patterns as per work requirements
PC12. provide proper pressure at correct angle as per work requirement to
minimize the waste age of consumables
PC13. grind off defective weld joints to required depth joints
PC14. grind off excessive root reinforcements in welded joint if required
Knowledge and Understanding (K)
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CON/N1206 Carry out grinding activities on structural elements
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A. Organizational Context
(Knowledge of
the company /
organization and
its processes)
The user/individual on the job needs to know and understand:
KA1. standard procedure for construction grinding works
KA2. safety rules and regulations for identifying structural steel material for
measurement and marking of fit-up positions
KA3. personal protection including use of safety gears and equipment
KA4. safe working methods and movements while performing relevant tasks
KA5. request procedure for tools & materials
KA6. housekeeping & other administrative rules
B. Technical
Knowledge
The user/individual on the job needs to know and understand:
KB1. different types of grinding machines, their application and specifications
KB2. safety norms while using grinding equipment
KB3. different types of consumables and their specifications
KB4. importance and need of housekeeping
KB5. need for cleaning the surface prior to use
KB6. various operations of the grinding machine
KB7. how to optimism the use of consumable
KB8. importance of comfortable body position in grinding
KB9. various patterns of grinding
KB10. importance of angle of grinding
KB11. pressure implied during grinding and its relation to minimizing wastage
KB12. how to finish welded connections
KB13. different parts of the grinding machine
KB14. different hand and power tools available in market for fabrication activity
KB15. application of commonly used hand and power tools used in fabrication shop
KB16. selection and correct use of different tools and tackles as per the work
requirement
KB17. how to carry out basic maintenance of different hand and power tools
KB18. know the tolerance limits and range of operation for all common hand and
power tools
KB19. ergonomic principles to carry loads
KB20. tools and tackles to be used in basic rigging work
KB21. standard practices regarding heavy material lifting and shifting
Skills (S)
A. Core Skills/
Generic Skills
Writing Skills
The user/ individual on the job needs to know and understand how to:
SA1. write in one or more language, preferably in the local language of the site
Reading Skills
The user/ individual on the job needs to know and understand how to:
SA2. read one or more language, preferably in the local language of the site
SA3. read instructions, guidelines, sign boards, safety rules & safety tags
CON/N1206 Carry out grinding activities on structural elements
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instruction related to exit routes during emergency at the workplace
Oral Communication (Listening and Speaking skills)
The user/ individual on the job needs to know and understand how to:
SA4. speak in one or more language, preferably in one of the local language of the
site
SA5. listen and follow instructions / communication shared by superiors/ co-
workers regarding team requirements or interfaces during work processes
SA6. orally communicate with co-workers regarding support required to complete
the respective work
B. Professional
Skills
Decision Making
The user/individual on the job needs to know and understand how to:
SB1. decide the type of grinder to be used and the specifications of the
consumables
SB2. decide the pattern of grinding
Plan and Organize
The user/individual on the job needs to know and understand how to:
SB3. check the availability of grinder and plan work accordingly
Customer centricity
The user/individual on the job needs to know and understand how to:
SB4. perform work as per agreed time schedule and quality
Problem solving
The user/individual on the job needs to know and understand how to:
SB5. report to seniors or appropriate authority in case of any discrepancies in the
issued equipment or grinders
Analytical Thinking
The user/individual on the job needs to know and understand how to:
SB6. check the adequacy of the clamps before grinding
SB7. confirm the depth and length of grinding
Critical Thinking
The user/individual on the job needs to know and understand how to:
SB8. identify the weld areas with over reinforcement correctly
SB9. correctly identify the defect areas for grinding
CON/N1206 Carry out grinding activities on structural elements
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NOS Version Control
NOS Code CON/N1206
Credits (NSQF) TBD Version number
1.0
Industry Construction Drafted on 07/06/2015
Industry Sub-sector Real Estate and Infrastructure Construction Last reviewed on
25/10/2017
Occupation Fabrication Next review date
25/10/2019
CON/N8001 Work effectively in a team to deliver desired results at the workplace
12
Overview
This NOS covers the skill and knowledge required to work effectively within a team to achieve the
desired results.
CON/N8001 Work effectively in a team to deliver desired results at the workplace
13
Unit Code CON/N8001
Unit Title (Task)
Work effectively in a team to deliver desired results at the workplace
Description This unit describes the skills and knowledge required to work effectively within a
team to achieve the desired results.
Scope The scope covers the following:
Interact and communicate effectively with co-workers, superiors and sub-
ordinates across different teams
Support co-workers, superiors and sub-ordinates within the team and across
interfacing teams to ensure effective execution of assigned task
Performance Criteria (PC) w.r.t. the Scope
Element Performance Criteria
Interact and communicate in effective and conclusive manner
To be competent, the user / individual on the job must be able to:
PC1. pass on work related information/ requirement clearly to the team
members
PC2. inform co-workers and superiors about any kind of deviations from work
PC3. address the problems effectively and report if required to immediate
supervisor appropriately
PC4. receive instructions clearly from superiors and respond effectively on the
same
PC5. communicate to team members/subordinates for appropriate work
technique and method
PC6. seek clarification and advice as per the requirement and applicability
Support co-workers to execute project requirements
PC7. hand over the required material, tools tackles, equipment and work fronts
timely to interfacing teams
PC8. work together with co-workers in a synchronized manner
Knowledge and Understanding (K)
A. Organizational Context
(Knowledge of
the company /
organization and
its processes)
The user/individual on the job needs to know and understand:
KA1. own roles and responsibilities
KA2. importance of effective communication and establishing strong working
relationships with co-workers
KA3. risks of a failure in teamwork in terms of effects on project outcomes,
timelines, safety at the construction site, etc.
KA4. different modes of communication, and its appropriate usage
KA5. importance of creating healthy and cooperative work environment among
the gangs of workers
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CON/N8001 Work effectively in a team to deliver desired results at the workplace
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B. Technical
Knowledge
The user/individual on the job needs to know and understand:
KB1. different activities within his work area where an interaction with other
workers is required
KB2. applicable techniques of work, properties of materials used, tools and tackles
used, safety standards that co- workers might need as per the requirement
KB3. importance of proper and effective communication and the expected
adverse effects in case of failure relating to quality, timelines, safety, risks at
the construction project site
KB4. importance and need of supporting co-workers facing problems for smooth
functioning of work
Skills (S)
A. Core Skills/
Generic Skills
Writing Skills
The user/ individual on the job needs to know and understand how to:
SA1. write in one or more languages, preferably in the local language of the site
Reading Skills
The user/ individual on the job needs to know and understand how to:
SA2. read in one or more languages, preferably in the local language of the site
SA3. read communication from team members regarding work completed,
materials used, tools and tackles used, support required
Oral Communication (Listening and Speaking skills)
The user/ individual on the job needs to know and understand how to:
SA4. speak in one or more languages, preferably in one of the local languages of
the site
SA5. listen and follow instructions / communication shared by superiors/ co-
workers regarding team requirements or interfaces during work processes
SA6. orally communicate with co-workers regarding support required to
complete the respective work
B. Professional
Skills
Decision Making
The user/individual on the job needs to know and understand how to:
SB1. decide on what information is to be shared with co-workers within the team
or from interfacing gang of workers
Plan and Organise
The user/individual on the job needs to know and understand how to:
SB2. plan work and organize required resources in coordination with team
members
Customer centricity
CON/N8001 Work effectively in a team to deliver desired results at the workplace
15
The user/individual on the job needs to know and understand how to:
SB3. complete all assigned task in coordination with team members
Problem solving
The user/individual on the job needs to know and understand how to:
SB4. take initiative in resolving issues among co-workers or report the same to
superiors
Analytical Thinking
The user/individual on the job needs to know and understand how to:
SB5. ensure best ways of coordination among team members
SB6. communicate with co-workers considering their educational / social
background
Critical Thinking
The user/individual on the job needs to know and understand how to:
SB7. evaluate the complexity of task and determine if any guidance is required
from superiors
CON/N8001 Work effectively in a team to deliver desired results at the workplace
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NOS Version Control
NOS Code CON/N8001
Credits (NSQF) TBD Version number
1.0
Industry Construction Drafted on 07/06/2015
Industry Sub-sector Real Estate and Infrastructure Construction Last reviewed on
25/10/2017
Occupation Fabrication Next review date
25/10/2019
CON/N9001 Work according to personal health, safety and environment protocol at construction site
17
Overview
This NOS covers the skill and knowledge required for an individual to work according to personal
health, safety and environmental protocol at construction site.
CON/N9001 Work according to personal health, safety and environment protocol at construction site
18
Unit Code CON/N9001
Unit Title (Task)
Work according to personal health, safety and environment protocol at construction site
Description This NOS covers the skill and knowledge required for an individual to work according
to personal health, safety and environmental protocol at construction site
Scope The scope covers the following:
Follow safety norms as defined by organization
Adopt healthy & safe work practices
Implement good housekeeping and environment protection process and
activities
Performance Criteria (PC) w.r.t. the Scope
Element Performance Criteria
Follow safety norms as defined by organization
To be competent, the user / individual on the job must be able to:
PC1. identify and report any hazards, risks or breaches in site safety to the
appropriate authority
PC2. follow emergency and evacuation procedures in case of accidents, fires,
natural calamities
PC3. follow recommended safe practices in handling construction materials,
including chemical and hazardous material whenever applicable
PC4. participate in safety awareness programs like Tool Box Talks, safety
demonstrations, mock drills, conducted at site
PC5. identify near miss , unsafe condition and unsafe act
Adopt healthy & safe work practices
PC6. use appropriate Personal Protective Equipment (PPE) as per work
requirements including:
Head Protection (Helmets)
Ear protection
Fall Protection
Foot Protection
Face and Eye Protection,
Hand and Body Protection
Respiratory Protection (if required)
PC7. handle all required tools, tackles , materials & equipment safely
PC8. follow safe disposal of waste, harmful and hazardous materials as per EHS
guidelines
PC9. install and apply properly all safety equipment as instructed
PC10. follow safety protocol and practices as laid down by site EHS department
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CON/N9001 Work according to personal health, safety and environment protocol at construction site
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Implement good housekeeping practices
PC11. collect and deposit construction waste into identified containers before
disposal, separate containers that may be needed for disposal of toxic or
hazardous wastes
PC12. apply ergonomic principles wherever required
Knowledge and Understanding (K)
A. Organizational Context
(Knowledge of
the company /
organization and
its processes)
The user/individual on the job needs to know and understand:
KA1. reporting procedures in cases of breaches or hazards for site safety,
accidents, and emergency situations as per guidelines
KA2. types of safety hazards at construction sites
KA3. basic ergonomic principles as per applicability
B. Technical
Knowledge
The user/individual on the job needs to know and understand:
KB1. the procedure for responding to accidents and other emergencies at site
KB2. appropriate personal protective equipment to used based on various
working conditions
KB3. importance of handling tools, equipment and materials as per applicable
KB4. health and environments effect of construction materials as per
applicability
KB5. various environmental protection methods as per applicability
KB6. storage of waste including the following at appropriate location:
non-combustible scrap material and debris
combustible scrap material and debris
general construction waste and trash (non-toxic, non-hazardous)
any other hazardous wastes
any other flammable wastes
KB7. how to use hazardous material, in a safe and appropriate manner as per
applicability
KB8. safety relevant to tools, tackles, & requirement as per applicability
KB9. housekeeping activities relevant to task
Skills (S)
A. Core Skills/
Generic Skills
Writing Skills
The user/ individual on the job needs to know and understand how to:
SA1. write in one or more language, preferably in the local language of the site
SA2. fill safety formats for near miss, unsafe conditions and safety suggestions
Reading Skills
The user/ individual on the job needs to know and understand how to:
SA3. read in one or more language, preferably in the local language of the site
SA4. read sign boards, notice boards relevant to safety
CON/N9001 Work according to personal health, safety and environment protocol at construction site
20
Oral Communication (Listening and Speaking skills)
The user/ individual on the job needs to know and understand how to:
SA5. speak in one or more language, preferably in one of the local language of the
site
SA6. listen instructions / communication shared by site EHS and superiors
regarding site safety, and conducting tool box talk
SA7. communicate reporting of site conditions, hazards, accidents, etc.
B. Professional
Skills
Decision Making
The user/individual on the job needs to know and understand how to:
SB1. not create unsafe conditions for others
SB2. keep the workplace clean and tidy
Plan and Organise
SB3. N.A
Customer centricity
SB4. N.A
Problem solving
The user/individual on the job needs to know and understand how to:
SB5. identify safety risks that affect the health, safety and environment for self
and others working in the vicinity, tackle it if within limit or report to
appropriate authority
Analytical Thinking
The user/individual on the job needs to know and understand how to:
SB6. assess and analyze areas which may affect health, safety and environment
protocol on the site
Critical Thinking
The user/individual on the job needs to know and understand how to:
SB7. ensure personal safety behavior
SB8. respond to emergency
CON/N9001 Work according to personal health, safety and environment protocol at construction site
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NOS Version Control
NOS Code CON/N9001
Credits (NSQF) TBD Version number
1.0
Industry Construction Drafted on 07/06/2015
Industry Sub-sector Real Estate and Infrastructure Construction Last reviewed on
25/10/2017
Occupation Fabrication Next review date
25/10/2019
CON/N1253 Carry out preparatory works for MIG welding operations
22
Overview This NOS covers the skills and knowledge required by a workman to be proficient in carrying out preparatory works prior to MIG welding operations.
CON/N1253 Carry out preparatory works for MIG welding operations
23
Unit Code CON/N1253
Unit Title (Task)
Carry out preparatory works for MIG welding operations
Description This unit describes the skills and knowledge required to carry out preparatory works prior to MIG welding operations
Scope The scope covers the following:
Work according to standard health and safety requirements
Prepare welding equipment for welding
Prepare base metal of thickness 3.15 mm to 100 mm
Performance Criteria (PC) w.r.t. the Scope
Element Performance Criteria
Work according to standard health and safety requirements for
To be competent, the user/individual on the job must be able to:
PC1. use and identify proper personal protective equipment such as helmet, nose
mask, ear plug, apron, hand guard, leg guard, safety shoes, boiler etc.
PC2. use appropriate welding masks and clean the welding face shield and
remove damaged glass
PC3. check for any gas leakages prior to striking arc
PC4. check the electrical connections for tightness and termination
PC5. inspect the lighting arrangement for adequacy
PC6. inspect and Clear the work area of any flammable objects like boxes, plastic
etc.
PC7. ensure that subordinates are following safety norms
PC8. attend any and all pep talks and tool box talks organized on site
PC9. participate in all safety drills organized on site
PC10. use appropriate fire safety equipment and procedure in case of fire
PC11. identify and report any other unsafe act or condition to appropriate
authority
Prepare welding equipment for welding
PC12. ensure that the gas cylinders are in upright positions
PC13. inspect electric connections for adequately tight and secure prior to
commencing the work
PC14. ensure that work clamps are adequately secured and in correct polarity (-ve
on welding bed and +ve on electrode)
PC15. ensure that contact tip, tip holder, diffuser and nozzle are in order
PC16. make initial adjustments of electrode consumption rate and voltage as per
requirement
PC17. ensure that proper lighting and ventilation arrangement is available at
workplace
PC18. inspect that the gas valves are properly functioning and adjust the same as
per instructions
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CON/N1253 Carry out preparatory works for MIG welding operations
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PC19. ensure that electrodes are compatible with base metal requirement
PC20. check the electrodes comply with weld requirements
Prepare base metal of thickness 3.15 mm to 100 mm
PC21. clean the surface to be welded before starting the welding operations
PC22. check that adequate root gap is available
PC23. check the bevel angle visually
PC24. make sure that surface is smooth and free of irregularities
PC25. remove any oxides, dust or foreign particles from the surface
PC26. ensure that the surface is not painted or galvanized
PC27. ensure that the element is properly anchored to restrict distortion
Knowledge and Understanding (K)
A. Organizational Context
(Knowledge of
the company /
organization and
its processes)
The user/individual on the job needs to know and understand:
KA1. standard procedures for MIG welding
KA2. safety rules and regulations for handling and storing relevant tools and
equipment and materials for MIG welding works
KA3. personal protection including the use of the related safety gears and
equipment
KA4. precautions and measures required in the lifting and movement of
heavy components and materials
KA5. service request procedures for tools, materials and equipments
KA6. statutory compliance requirements related to working at height
B. Technical
Knowledge
The user/individual on the job needs to know and understand:
KB1. how to read and interpret fabrication drawings
KB2. how to read and interpret fabrication symbols
KB3. correct handling and storage of gas cylinders for welding purposes
KB4. Select recommended welding filter shade glass
KB5. the effects of polarity of setup
KB6. power ratings of welding equipment
KB7. relationship between wire feed, speed control and voltage
KB8. the gas regulation, rate of flow of shielding gas and its effects
KB9. components of welding gun, equipment and their functions
KB10. effects of welding fumes
KB11. fire protection and prevention methods, equipments and their use
KB12. use of welding mask
KB13. consumable specification, types and use
KB14. Specifications of welding electrodes
KB15. Properties of different types of shield gases and their application, selection
of gas flow rate and mode of metal transfer effects of unclean surface on
welds
KB16. preparation of weld joints
KB17. understand the safety evacuation plan for concerned relevance
CON/N1253 Carry out preparatory works for MIG welding operations
25
KB18. various hazards involved in welding
KB19. different types of personnel protective equipments and their application
KB20. importance of proper lighting and ventilation
KB21. different occupational disease, their causes and remedies
KB22. how to check the electrical connections
KB23. how to detect gas leakage
Skills (S)
A. Core Skills/
Generic Skills Writing Skills
The user/ individual on the job needs to know and understand how to:
SA1. write in one or more language, preferably in the local language of the site
and basic English
SA2. provide clear and simple instructions, details & sketches to sub-ordinate
Reading Skills
The user/ individual on the job needs to know and understand how to:
SA3. read one or more language, preferably in the local language of the site and
basic English
SA4. read sketches, drawing or instructions provided for the welding work
SA5. read various, sign boards, safety rules and safety tags , instructions related to
exit routes during emergency at the workplace
Oral Communication (Listening and Speaking skills)
The user/ individual on the job needs to know and understand how to:
SA6. speak one or more language, preferably in the local language of the site
SA7. speak and convey about various, sign boards, safety rules and safety tags ,
instructions related toexit routes during emergency at the workplace
B. Professional
Skills
Decision Making
The user/individual on the job needs to know and understand how to:
SB1. decide if the welding tip and welding cup are in order and as per
requirement
SB2. decide the initial adjustments of the welding equipment keeping in view the
job requirement
Plan and Organise
The user/individual on the job needs to know and understand how to:
SB3. plan work activities for self and request for appropriate tools and
consumables accordingly
Customer centricity
CON/N1253 Carry out preparatory works for MIG welding operations
26
The user/individual on the job needs to know and understand how to:
SB4. perform work as per agreed time schedule and quality
Problem solving
The user/individual on the job needs to know and understand how to:
SB5. consult with seniors and obtain necessary approvals regarding issues related
to welding equipment, consumables, housekeeping etc.
Analytical Thinking
The user/individual on the job needs to know and understand how to:
SB6. correlate the sequence of welding works with respect to other
proceeding activity
SB7. analyze actions of self that may result in wastage of materials and
consumables so as to optimize their use
SB8. identify and assess actions of self that can cause unsafe conditions
SB9. check compatibility of electrodes with base metal requirements
Critical Thinking
The user/individual on the job needs to know and understand how to:
SB10. check the polarity of the equipment and confirm as per work requirement
SB11. adjust the initial consumption rate of electrode and voltage as per
requirement
CON/N1253 Carry out preparatory works for MIG welding operations
27
NOS Version Control
NOS Code CON/N1253
Credits (NSQF) TBD Version number
1.0
Industry Construction Drafted on 07/06/2015
Industry Sub-sector Real Estate and Infrastructure Construction Last reviewed on
25/10/2017
Occupation Fabrication Next review date
25/10/2019
CON/N1254 Carry out MIG welding as per requirement in fabrication workshop or construction site
28
Overview This NOS covers the skills and knowledge required by a workman to be proficient in carrying out MIG welding as per requirement in fabrication workshop or construction site.
CON/N1254 Carry out MIG welding as per requirement in fabrication workshop or construction site
29
Unit Code CON/N1254
Unit Title (Task)
Carry out MIG welding as per requirement in fabrication workshop or construction site
Description This unit describes the skills and knowledge required to carry out MIG welding on structural elements (rolled section, tubular section, plate section and other casting ) of materials ( carbon steel, stainless steel ,alloy steel,alumunium and other metals) of thickness ranging from (3.15mm to 100mm) as per requirement in fabrication workshop or construction site for structures of height up to 100 meters and also in confined spaces
Scope The scope covers the following:
Carry out welding operation in 1G, 1F, 2G, 2F, 3G, 3F positions for structural
elements of thickness 3.15 mm to 100 mm as per national and international
standards
Carry out visual inspection during and post welding
Performance Criteria (PC) w.r.t. the Scope
Element Performance Criteria
Carry out welding operation in 1G, 1F, 2G, 2F, 3G, 3F positions for structural elements of thickness 3.15 mm to 100 mm as per national and international standards
To be competent, the user/individual on the job must be able to:
PC1. interpret weld requirements from fabrication drawings
PC2. confirm the weld specifications if required from superiors
PC3. understand the weld requirements like position of weld, type of joint,
number of passed required, etc.
PC4. estimate the number or length of filler material required to complete the
weld
PC5. pre heat the base material before welding if required
PC6. maintain correct body posture as per requirement of weld
PC7. adjust the wire stick out and regulate the gas flow rate accordingly
PC8. use appropriate patterns of welding as per position and type of joints
PC9. hold the welding gun at proper angle as per requirement
PC10. make required number of passes
PC11. make steady passes of weld to ensure proper heat generation and
penetration
PC12. make adjustments in welding machine if required
PC13. disconnect the equipment correctly and store the same as per manufacture
guidelines and site safety parameters
PC14. clean the welded joint
Carry out visual inspection during and post welding
PC15. ensure proper penetration of weld
PC16. ensure that the weld is properly shielded by shielding gas
PC17. ensure proper heat input through arc
PC18. reduce the spatter spray during the welding
PC19. check the root pass for cracks
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CON/N1254 Carry out MIG welding as per requirement in fabrication workshop or construction site
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PC20. visually check for spatters, craters, undercuts
PC21. visually check the welded joint for cracks
Knowledge and Understanding (K)
A. Organizational Context
(Knowledge of
the company /
organization and
its processes)
The user/individual on the job needs to know and understand:
KA1. standard procedures for MIG welding work
KA2. safety rules and regulations for handling and storing relevant tools and
equipment and materials for welding works
KA3. personal protection including the use of the related safety gears and
equipment
KA4. precautions and measures required in the lifting and movement of
heavy components and materials
KA5. service request procedures for tools, materials and equipments
KA6. statutory compliance requirements related to working at height
B. Technical
Knowledge
The user/individual on the job needs to know and understand:
KB1. how to read and interpret fabrication drawings
KB2. how to read and interpret fabrication symbols
KB3. the gas regulation, rate of flow of shielding gas and its effects
KB4. components of welding gun, equipment and their functions
KB5. effects of welding fumes
KB6. fire protection and prevention methods, equipment and their use
KB7. use of welding mask
KB8. consumable specification, types and use
KB9. different types of shielding gases and their uses in different conditions
KB10. effects of unclean surface on welds
KB11. types of welded joints
KB12. positions of welding
KB13. patterns of welding and their application
KB14. defects in welding
KB15. preparation of weld joints
Skills (S)
A. Core Skills/
Generic Skills Writing Skills
The user/ individual on the job needs to know and understand how to:
SA1. write in one or more language, preferably in the local language of the site
and basic English
SA2. provide clear and simple instructions, details & sketches to sub-ordinate
Reading Skills
The user/ individual on the job needs to know and understand how to:
SA3. read one or more language, preferably in the local language of the site and
CON/N1254 Carry out MIG welding as per requirement in fabrication workshop or construction site
31
basic English
SA4. read sketches, drawing or instructions provided for the welding work
SA5. read various, sign boards, safety rules and safety tags , instructions related to
exit routes during emergency at the workplace
Oral Communication (Listening and Speaking skills)
The user/ individual on the job needs to know and understand how to:
SA6. speak one or more language, preferably the local language at the site
SA7. orally and effectively communicate about sketches, drawing or instructions
provided for the welding work
SA8. speak and convey about various, sign boards, safety rules and safety tags ,
instructions related to exit routes during emergency at the workplace
B. Professional
Skills
Decision Making
The user/individual on the job needs to know and understand how to:
SB1. determine appropriate pattern of welding based on position and type of
joints
SB2. decide and confirm the welding parameters and adjust the same to suit the
work requirements
SB3. decide if the metal requires initial pre heating or not
SB4. decide upon the proper body position to suite the work conditions
Plan and Organise
The user/individual on the job needs to know and understand how to:
SB5. plan work & organize required resource in coordination with team members
and superior
Customer centricity
The user/individual on the job needs to know and understand how to:
SB6. perform work as per agreed time schedule and quality
Problem solving
The user/individual on the job needs to know and understand how to:
SB7. avoid defects in welding by adjusting the welding parameters to suit the
work requirement
Analytical Thinking
The user/individual on the job needs to know and understand how to:
SB8. correlate the sequence of welding works with respect to other proceeding
activity
SB9. analyze actions of self that may result in wastage of materials and
CON/N1254 Carry out MIG welding as per requirement in fabrication workshop or construction site
32
consumables so as to optimize their use
SB10. identify and assess actions of self that can cause unsafe conditions
Critical Thinking
The user/individual on the job needs to know and understand how to:
SB11. evaluate the complexity of the task and seek assistance and support
wherever required
SB12. identify violation of any safety norms by subordinates and coworkers which
may lead to accidents
SB13. monitor the speed of welding to ensure that a proper and smooth welding is
obtained
CON/N1254 Carry out MIG welding as per requirement in fabrication workshop or construction site
33
NOS Version Control
NOS Code CON/N1254
Credits (NSQF) TBD Version number
1.0
Industry Construction Drafted on 07/06/2015
Industry Sub-sector Real Estate and Infrastructure Construction Last reviewed on
25/10/2017
Occupation Fabrication Next review date
25/10/2019
CON/N1255 Carry out preparatory works for TIG welding operations
34
Overview This NOS covers the skills and knowledge required by a workman to be proficient in carrying out preparatory works prior to TIG welding operations.
CON/N1255 Carry out preparatory works for TIG welding operations
35
Unit Code CON/N1255
Unit Title (Task)
Carry out preparatory works for TIG welding operations
Description This unit describes the skills and knowledge required to carry out preparatory works prior to TIG welding operations
Scope The scope covers the following:
Work according to standard health and safety requirements
Prepare the TIG welding equipment and consumables for welding process
Prepare base metal of thickness 3.15 mm to 100 mm
Interpret and understand weld requirements and specifications
Performance Criteria (PC) w.r.t. the Scope
Element Performance Criteria
Work according to standard health and safety requirements
To be competent, the user/individual on the job must be able to:
PC28. use and identify proper personal protective equipment such as hand gloves,
nose mask, ear plugs, head protection, safety harness etc.
PC29. use appropriate welding masks
PC30. check for any gas leakages prior to striking arc
PC31. check the electrical connections for tightness and termination
PC32. inspect the lighting arrangement for adequacy
PC33. inspect and clear the work area of any flammable objects like boxes, plastic
etc.
PC34. ensure that subordinates are following safety norms
PC35. attend any and all prep talks and tool box talks organized on site
PC36. participate in all safety drills organized on site
PC37. use appropriate fire safety equipment and procedure in case of fire
PC38. identify and report any other unsafe act or condition to appropriate
authority
Prepare the TIG welding equipment and consumables for welding process
PC39. keep the shielding gas cylinders in upright position only
PC40. ensure that shielding gas is purely inert e. g Argon
PC41. check the pipes, valves/ regulator and flow meter is securely connected
PC42. taper the tungsten rod and sharpen the point of the electrode for better arc
stability. The electrode should be grinded parallel to length
PC43. clean the electrode prior to use to remove any foreign matter
PC44. adjust the tungsten stick out as per requirement based upon type of joint,
base metal properties etc.
PC45. stack required number of filler rods\ electrodes as per instructions
PC46. clean the filler rod to remove any foreign particles in order to avoid weld
contamination
PC47. ensure that filler material are compatible with base metal and as per weld
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CON/N1255 Carry out preparatory works for TIG welding operations
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specifications
PC48. ensure that work clamps are adequately secured and in correct polarity (+ ve
on welding bed and -ve on electrode)
PC49. ensure that electrical connections are tight, secure and compatible with the
equipment
Preparation of base metal of thickness 3.15 mm to 100 mm
PC50. clean the surface to be welded before starting the welding operations
PC51. check that adequate root gap is available
PC52. check the bevel angle visually
PC53. make sure that surface is smooth and free of irregularities
PC54. remove any oxides, dust or foreign particles from the surface
PC55. ensure that the surface is not painted or galvanized
PC56. ensure that the joint is properly secured against any movement
Interpret and understand weld requirements and specifications
PC57. identify the joints to be welded, their location and position of welding
PC58. extract the weld specifications like type of joint, throat for fillet, number of
passes required, specifications of filler rod, required heat input, preheat
temperature etc. form relevant charts and drawings
PC59. estimate the number or length of filler material required to complete the
weld
Knowledge and Understanding (K)
C. Organizational Context
(Knowledge of
the company /
organization and
its processes)
The user/individual on the job needs to know and understand:
KA7. standard procedures for TIG welding
KA8. safety rules and regulations for handling and storing relevant tools and
equipment and materials for TIG welding works
KA9. personal protection including the use of the related safety gears and
equipment
KA10. precautions and measures required in the lifting and movement of heavy
components and materials
KA11. service request procedures for tools, materials and equipments
KA12. statutory compliance requirements related to working at height
D. Technical
Knowledge
The user/individual on the job needs to know and understand:
KB24. how to read and interpret fabrication drawings
KB25. how to read and interpret fabrication symbols
KB26. correct handling and storage of gas cylinders for welding purposes
KB27. the effects of polarity of setup
KB28. power ratings of welding equipment
KB29. relationship between wire feed, speed control and voltage
KB30. the gas regulation, rate of flow of shielding gas and its effects
KB31. components of welding gun, equipment and their functions
KB32. effects of welding fumes
KB33. fire protection and prevention methods, equipment and their use
CON/N1255 Carry out preparatory works for TIG welding operations
37
KB34. use of welding mask
KB35. consumable specification, types and use
KB36. selection of consumables for different purposes
KB37. different types of shielding gases and their uses in different conditions
KB38. effects of unclean surface on welds
KB39. preparation of weld joints
KB40. positions of welding
KB41. pattern of welding and their application
KB42. safety evacuation plan for concerned relevance
KB43. various hazards involved in welding
KB44. different types of personnel protective equipment and their application
KB45. importance of proper lighting and ventilation
KB46. different occupational disease, their causes and remedies
KB47. how to check the electrical connections
KB48. how to detect gas leakage
Skills (S)
C. Core Skills/
Generic Skills Writing Skills
The user/ individual on the job needs to know and understand how to:
SA1. write in one or more language, preferably in the local language of the site
and basic English
SA2. provide clear and simple instructions, details & sketches to sub-ordinate
Reading Skills
The user/ individual on the job needs to know and understand how to:
SA3. read one or more language, preferably in the local language of the site and
basic English
SA4. read sketches, drawing or instructions provided for the welding work
SA5. read various, sign boards, safety rules and safety tags , instructions related
to exit routes during emergency at the workplace
Oral Communication (Listening and Speaking skills)
The user/ individual on the job needs to know and understand how to:
SA6. speak one or more language, preferably in the local language of the site
SA7. orally and effectively communicate about sketches, drawing or instructions
provided for the welding work
SA8. speak and convey about various, sign boards, safety rules and safety tags ,
instructions related to exit routes during emergency at the workplace
Decision Making
CON/N1255 Carry out preparatory works for TIG welding operations
38
D. Professional
Skills
The user/individual on the job needs to know and understand how to:
SB1. determine appropriate pattern of welding based on position and type of
joints
SB2. decide if the metal requires initial pre heating or not
Plan and Organise
The user/individual on the job needs to know and understand how to:
SB3. plan work & organize required resource in coordination with team members
and superior
Customer centricity
The user/individual on the job needs to know and understand how to:
SB4. perform work as per agreed time schedule and quality
Problem solving
The user/individual on the job needs to know and understand how to:
SB5. check the working of the welding equipment and identify any defects or
malfunction and report the same to appropriate authority
SB6. ensure that all foreign matter has been removed from electrodes
Analytical Thinking
The user/individual on the job needs to know and understand how to:
SB7. assess and adjust the initial consumption rate of electrode and voltage as
per requirement
SB8. analyze actions of self that may result in wastage of materials and
consumables so as to optimize their use
SB9. identify and assess actions of self that can cause unsafe conditions
SB10. ensure that the position of working clamps is as per the requirements
Critical Thinking
The user/individual on the job needs to know and understand how to:
SB11. evaluate the complexity of the task and seek assistance and support
wherever required
SB12. check for compatibility of filler material with base metal
CON/N1255 Carry out preparatory works for TIG welding operations
39
NOS Version Control
NOS Code CON/N1255
Credits (NSQF) TBD Version number
1.0
Industry Construction Drafted on 07/06/2015
Industry Sub-sector Real Estate and Infrastructure Construction Last reviewed on
25/10/2017
Occupation Fabrication Next review date
25/10/2019
CON/N1256 Carry out tungsten inert gas welding as per requirement in fabrication workshop or
construction site
40
Overview This NOS covers the skills and knowledge required by a workman to be proficient in carrying out tungsten inert gas welding as per requirement in fabrication workshop or construction site
CON/N1256 Carry out tungsten inert gas welding as per requirement in fabrication workshop or
construction site
41
Unit Code CON/N1256
Unit Title (Task)
Carry out tungsten inert gas welding as per requirement in fabrication workshop or construction site
Description This unit describes the skills and knowledge required to carry out tungsten Inert gas welding on structural elements (rolled section, tubular section, plate section and other casting) of materials (carbon steel, stainless steel, alloy steel, aluminum and other metals) of thickness ranging from (3.15mm to 100mm) as per requirement in fabrication workshop or construction site for structures of height up to 100 meter and also in confined spaces.
Scope The scope covers the following:
Carry out welding operation in 1G, 1F, 2G, 2F, 3G,3F positions for structural
elements of thickness 3.15 mm to 100 mm as per national and international
standards
Carry out visual inspection during and post welding
Performance Criteria (PC) w.r.t. the Scope
Element Performance Criteria
Carry out welding operation in 1G, 1F, 2G, 2F, 3G,3F positions for structural elements of thickness 3.15 mm to 100 mm as per national and international standards
To be competent, the user/individual on the job must be able to:
PC1. ignite the arc by superimposing the high frequency over high voltage
PC2. avoid touching the tungsten rod to the base metal
PC3. ensure that the filler rod is always inside the shielding gas cover to avoid
contamination during welding operation
PC4. select proper body position so that hand movements are comfortable and
smooth
PC5. position head such that weld is clearly visible
PC6. ensure that weld location is properly illuminated and ventilated
PC7. use appropriate patterns of welding as per position and type of joints
PC8. hold the welding gun at proper angle as per requirement (70-80 ⁰ from base
plate)
PC9. ensure that the Arc length is not too large and is as per heat requirement
PC10. adjust the travel speed of weld to ensure proper penetration
PC11. make required number of weld passes
PC12. make steady passes of weld to ensure proper heat generation and
penetration
PC13. make required adjustments in welding machine
PC14. disconnect the equipment correctly and store the same as per manufacture
guidelines and site safety parameters
PC15. clean the welded joint
Carry out visual inspection during and post welding
PC16. ensure proper penetration of weld
PC17. ensure that the weld is properly shielded by shielding gas
PC18. ensure proper heat input through arc
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CON/N1256 Carry out tungsten inert gas welding as per requirement in fabrication workshop or
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42
PC19. reduce the spatter spray during the welding
PC20. check the root pass for cracks
PC21. visually check for spatters, craters, undercuts
PC22. visually check the welded joint for cracks
Knowledge and Understanding (K)
C. Organizational Context
(Knowledge of
the company /
organization and
its processes)
The user/individual on the job needs to know and understand:
KA7. standard procedures for TIG welding work
KA8. safety rules and regulations for handling and storing relevant tools and
equipment and materials for welding works
KA9. personal protection including the use of the related safety gears and
equipment
KA10. precautions and measures required in the lifting and movement of
heavy components and materials
KA11. service request procedures for tools, materials and equipments
KA12. statutory compliance requirements related to working at height
D. Technical
Knowledge
The user/individual on the job needs to know and understand:
KB16. how to read and interpret fabrication drawings
KB17. how to read and interpret fabrication symbols
KB18. the gas regulation, rate of flow of shielding gas and its effects
KB19. components of welding gun, equipment and their functions
KB20. effects of welding fumes
KB21. fire protection and prevention methods, equipment and their use
KB22. hazards of welding
KB23. use of welding mask
KB24. consumable specification, types and use
KB25. different types of shielding gases and their uses in different conditions
KB26. effects of unclean surface on welds
KB27. types of welded joints
KB28. positions of welding
KB29. patterns of welding and their application
KB30. defects in welding
KB31. preparation of weld joints
KB32. process of welding
KB33. physical and chemical changes occurring during welding
KB34. behavior of metal upon heating, plasticity curve etc.
Skills (S)
Writing Skills
The user/ individual on the job needs to know and understand how to:
CON/N1256 Carry out tungsten inert gas welding as per requirement in fabrication workshop or
construction site
43
C. Core Skills/
Generic Skills
SA1. write in one or more language, preferably in the local language of the site
and basic English
SA2. provide clear and simple instructions, details & sketches to sub-ordinate
Reading Skills
The user/ individual on the job needs to know and understand how to:
SA3. read one or more language, preferably in the local language of the site and
basic English
SA4. read sketches, drawing or instructions provided for the welding work
SA5. read various, sign boards, safety rules and safety tags , instructions related
to exit routes during emergency at the workplace
Oral Communication (Listening and Speaking skills)
The user/ individual on the job needs to know and understand how to:
SA6. speak one or more language, preferably in the local language of the site
SA7. orally and effectively communicate about sketches, drawing or instructions
provided for the welding work
SA8. speak and convey about various, sign boards, safety rules and safety tags ,
instructions related to exit routes during emergency at the workplace
D. Professional
Skills
Decision Making
The user/individual on the job needs to know and understand how to:
SB1. determine appropriate pattern of welding based on position and type of
joints
SB2. decide and confirm the welding parameters and adjust the same to suit the
work requirements
SB3. decide if the metal requires initial pre heating or not
SB4. decide upon the proper body position to suit the work conditions
Plan and Organise
The user/individual on the job needs to know and understand how to:
SB5. plan work & organize required resource in coordination with team members
and superior
Customer centricity
The user/individual on the job needs to know and understand how to:
SB6. perform work as per agreed time schedule and quality
Problem solving
CON/N1256 Carry out tungsten inert gas welding as per requirement in fabrication workshop or
construction site
44
The user/individual on the job needs to know and understand how to:
SB7. avoid defects in welding by adjusting the welding parameters to suit the
work requirement
Analytical Thinking
The user/individual on the job needs to know and understand how to:
SB8. correlate the sequence of welding works with respect to other proceeding
activity
SB9. analyze actions of self that may result in wastage of materials and
consumables so as to optimize their use
SB10. identify and assess actions of self that can cause unsafe conditions
Critical Thinking
The user/individual on the job needs to know and understand how to:
SB11. evaluate the complexity of the task and seek assistance and support
wherever required
SB12. identify violation of any safety norms by subordinates and coworkers which
may lead to accidents
SB13. monitor the speed of welding to ensure that a proper and smooth welding is
obtained
CON/N1256 Carry out tungsten inert gas welding as per requirement in fabrication workshop or
construction site
45
NOS Version Control
NOS Code CON/N1256
Credits (NSQF) TBD Version number
1.0
Industry Construction Drafted on 07/06/2015
Industry Sub-sector Real Estate and Infrastructure Construction Last reviewed on
25/10/2017
Occupation Fabrication Next review date
25/10/2019
CON/N1257 Carry out preparatory work for shielded metal arc welding operations
46
Overview This NOS covers the skills and knowledge required by a workman to be proficient in carrying out preparatory work for shielded metal arc welding operations.
CON/N1257 Carry out preparatory work for shielded metal arc welding operations
47
Unit Code CON/N1257
Unit Title (Task)
Carry out preparatory work for shielded metal arc welding operations
Description This unit describes the skills and knowledge required to carry out preparatory work for performing shielded metal arc welding operations
Scope The scope covers the following:
Work according to standard health and safety requirements
Conduct preparatory works for setting up the welding kit and prepare the
base metal of thickness 3.15 mm to 100 mm
Performance Criteria (PC) w.r.t. the Scope
Element Performance Criteria
Work according to standard health and safety requirements
To be competent, the user / individual on the job must be able to:
PC1. use and identify proper personal protective equipment such as hand gloves,
nose mask, ear plugs, head protection, safety harness, etc.
PC2. use appropriate welding masks
PC3. check the electrical connections for tightness and termination
PC4. inspect the lighting arrangement for adequacy
PC5. inspect and Clear the work area of any flammable objects like boxes, plastic,
etc.
PC6. ensure that subordinates are following safety norms
PC7. attend any and all perp talks and tool box talks organized on site
PC8. participate in all safety drills organized on site
PC9. use appropriate fire safety equipments and procedure in case of fire
PC10. identify and report any other unsafe act or condition to appropriate
authority
Conduct preparatory works for setting up the welding kit and prepare the base metal of thickness
3.15 mm to 100 mm
PC11. inspect electric collections to be adequately tight and secure prior to
commencing the work
PC12. attach the work clamps to the base metal
PC13. select the polarity depending upon the thickness of material and other
parameters of work requirement
PC14. store the electrodes correctly as per manufactures guidelines
PC15. clean the surface to be welded before starting the welding operations
PC16. check that adequate root gap is available
PC17. check the bevel angle visually
PC18. make sure that surface is smooth and free of irregularities
PC19. remove any oxides, dust or foreign particles from the surface
PC20. ensure that the temperature at joint is as per specifications
PC21. ensure that the surface is not painted or galvanized
PC22. ensure that the joint is properly secured against any movement
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CON/N1257 Carry out preparatory work for shielded metal arc welding operations
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PC23. identify the joints to be welded, their location and position of welding
PC24. extract the weld specifications like type of joint, throat for fillet, number of
passes required, specifications of filler rod, required heat input, preheat
temperature, type of welding process, type of weld , required consumables,
required welding process parameters, base metal, joint design, type of edge
preparation welding position, backing, preheat temp, post weld heat
treatment, welding techniques etc. form relevant charts and drawings
PC25. estimate the number or length of filler material required to complete the
weld
Knowledge and Understanding (K)
E. Organizational Context
(Knowledge of
the company /
organization and
its processes)
The user/individual on the job needs to know and understand:
KA13. standard procedures for welding works
KA14. safety rules and regulations for handling and storing relevant tools and
equipment and materials for welding works
KA15. personal protection including the use of the related safety gears and
equipment
KA16. precautions and measures required in the lifting and movement of
heavy components and materials
KA17. service request procedures for tools, materials and equipments
KA18. statutory compliance requirements related to working at height
F. Technical
Knowledge
The user/individual on the job needs to know and understand:
KB1. welding terminologies like arc, flux, slag, etc.
KB2. different types of sections, plates, etc.
KB3. different materials used in fabrication
KB4. different welding parameters
KB5. correct calibration of welding kit and various adjustments in the same
KB6. importance of cleaning the surface of the material prior to welding
KB7. check the prepared edges against the specifications
KB8. importance of proper joint finishing
KB9. reading and interpreting fabrication shop drawings, Welding symbol, weld
nomenclature, weld joint and welding position. interpretation of fabrication
drawing.
KB10. understand welding procedure specification ( WPS)
KB11. reading and interpreting various welding specifications from charts and
tables
KB12. Selection and handling of electrodes
KB13. basics of SMAW process
KB14. effect of polarity on welding
Skills (S)
CON/N1257 Carry out preparatory work for shielded metal arc welding operations
49
E. Core Skills/
Generic Skills Writing Skills
The user/ individual on the job needs to know and understand how to:
SA1. write in one or more language, preferably in the local language of the site
and basic English
SA2. provide clear and simple instructions, details & sketches to sub-ordinate
Reading Skills
The user/ individual on the job needs to know and understand how to:
SA3. read one or more language, preferably in the local language of the site
SA4. read /sketches/routine working drawing or instructions provided for work
SA5. read various, sign boards, safety rules and safety tags , instructions related
to exit routes during emergency at the workplace
Oral Communication (Listening and Speaking skills)
The user/ individual on the job needs to know and understand how to:
SA6. speak one or more language, preferably in the local language of the site
SA7. orally and effectively communicate about sketches, drawing or instructions
provided for the required work
SA8. speak and convey about various, sign boards, safety rules and safety tags ,
instructions related to exit routes during emergency at the workplace
F. Professional
Skills
Decision Making
The user/individual on the job needs to know and understand how to:
SB1. decide if the metal requires initial pre heating
SB2. decide whether surface is ready for welding and has been properly
cleaned of oxides, scrapes etc.
SB3. decide if the anchorage provided is proper or not
Plan and Organize
The user/individual on the job needs to know and understand how to:
SB4. plan work and organize required resource in coordination with team
member and superior
Customer centricity
The user/individual on the job needs to know and understand how to:
SB5. perform work as per agreed time schedule and quality
Problem solving
The user/individual on the job needs to know and understand how to:
SB6. confirm the weld specifications and requirements if required from
appropriate
CON/N1257 Carry out preparatory work for shielded metal arc welding operations
50
authority
Analytical Thinking
The user/ individual on the job needs to know and understand how to:
SB7. select polarity depending on thickness of material and other requirements
SB8. check the compliance of fittup with weld requirement
SB9. analyze the actions of self that may result in wastage of material and
consumables so as to optimize their use
SB10. identify and assess the actions of self that may cause unsafe conditions
Critical Thinking
The user/individual on the job needs to know and understand how to:
SB11. evaluate the complexity of the tasks to and seek assistance and support
wherever required from the superior
SB12. confirm and recheck the weld equipments and consumables and their
compatibility with weld requirements and specifications and their
CON/N1257 Carry out preparatory work for shielded metal arc welding operations
51
NOS Version Control
NOS Code CON/N1257
Credits (NSQF) TBD Version number
1.0
Industry Construction Drafted on 07/06/2015
Industry Sub-sector Real Estate and Infrastructure Construction Last reviewed on
25/10/2017
Occupation Fabrication Next review date
25/10/2019
CON/N1258 Carry out shielded metal arc welding as per requirement in fabrication workshop or
construction site
52
Overview
This NOS covers the skills and knowledge required by a workman to be proficient in carrying out shielded metal arc welding as per requirement in fabrication workshop or construction site
CON/N1258 Carry out shielded metal arc welding as per requirement in fabrication workshop or
construction site
53
Unit Code CON/N1258
Unit Title (Task)
Carry out shielded metal arc welding as per requirement in fabrication workshop or construction site
Description This unit describes the skills and knowledge required to carry out shielded metal arc welding on structural elements (rolled section, tubular section, plate section and other casting) of materials (carbon steel, stainless steel, alloy steel, alumunium and other metals) of thickness ranging from (3.15mm to 100mm) as per requirement in fabrication workshop or construction site for structures of height up to 100 meters and also in confined spaces.
Scope The scope covers the following:
Carry out shielded metal arc welding operation in in 1G, 1F, 2G, 2F, 3G, 3F
positions for structural elements of thickness 3.15 mm to 100 mm as per
national and international standards
Carry out visual inspection during and post welding
Performance Criteria (PC) w.r.t. the Scope
Element Performance Criteria
Carry out shielded metal arc welding operation in 1G, 1F, 2G, 2F, 3G, 3F positions for structural elements of thickness 3.15 mm to 100 mm as per national and international standards
To be competent, the user / individual on the job must be able to:
PC1. ignite the arc by striking the electrode on the base metal like a match
PC2. select proper body position so that hand movements are comfortable and
smooth
PC3. position head such that weld is clearly visible
PC4. ensure that weld location is properly illuminated and ventilated
PC5. use appropriate patterns of welding as per position and type of joints
PC6. push or drag the arc as per requirement
PC7. ensure that the Arc length is not too large and is as per heat requirement
PC8. adjust the travel speed of weld to ensure proper penetration
PC9. make required number of weld passes
PC10. make steady passes of weld to ensure proper heat generation and
penetration
PC11. clean the weld after each pass to scrap out the slag formed on the surface of
weld
PC12. make required adjustments in welding machine
PC13. disconnect the equipment correctly and store the same as per manufacture
guidelines and site safety parameters
PC14. efficiently dispose of the stubs of electrode left after completing the welding
PC15. clean the welded joint by removing slag formed during the welding process
Carry out visual
inspection during
and post welding
PC16. ensure proper penetration of weld PC17. ensure that the weld is properly shielded throughout the operation PC18. ensure proper heat input through arc PC19. reduce the spatter spray during the welding
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CON/N1258 Carry out shielded metal arc welding as per requirement in fabrication workshop or
construction site
54
PC20. check the root pass for cracks, porosity, slag inclusion, incomplete
penetration, root concavity, incomplete fusion, undercut etc.
PC21. visually check for spatters, craters, undercuts PC22. visually check the welded joint for cracks
Knowledge and Understanding (K)
E. Organizational Context
(Knowledge of
the company /
organization and
its processes)
The user/individual on the job needs to know and understand:
KA1. standard procedures for welding work
KA2. safety rules and regulations for handling and storing relevant tools and
equipment and materials for welding works
KA3. personal protection including the use of the related safety gears and
equipment
KA4. precautions and measures required in the lifting and movement of
heavy components and materials
KA5. service request procedures for tools, materials and equipments
KA6. statutory compliance requirements related to working at height
F. Technical
Knowledge
The user/individual on the job needs to know and understand:
KB1. how to read and interpret fabrication shop drawings
KB2. how to read and interpret various welding specifications from charts and
tables
KB3. different welding parameters
KB4. correct calibration of welding kit and various adjustments in the same
KB5. importance of cleaning the surface of the material prior to welding
KB6. importance of proper joint finishing
KB7. basics of SMAW process to be carried out
KB8. effect of polarity on welding
KB9. importance of preheating and post heating
KB10. selection of electrodes, as per requirements
KB11. importance of light, ventilation and proper body posture
KB12. different patterns of welding
KB13. assembling and disconnecting the welding kit
KB14. how and why the slag should be removed
KB15. parameters for checking the correctness of weld
KB16. welding terminologies like arc, flux, slag, etc.
KB17. relation of arc length with heat transfer
KB18. effect of atmospheric agents on welding
Skills (S)
Writing Skills
CON/N1258 Carry out shielded metal arc welding as per requirement in fabrication workshop or
construction site
55
E. Core Skills/
Generic Skills The user/ individual on the job needs to know and understand how to:
SA1. write in one or more language, preferably in the local language of the site
and basic English
SA2. provide clear and simple instructions, details & sketches to sub-ordinate
Reading Skills
The user/ individual on the job needs to know and understand how to:
SA3. read one or more language, preferably in the local language of the site
SA4. read /sketches/routine working drawing or instructions provided for work
SA5. read various, sign boards, safety rules and safety tags , instructions related
to exit routes during emergency at the workplace
Oral Communication (Listening and Speaking skills)
The user/ individual on the job needs to know and understand how to:
SA6. speak one or more language, preferably in the local language of the site
SA7. orally and effectively communicate about sketches, drawing or instructions
provided for the required work
SA8. speak and convey about various, sign boards, safety rules and safety tags ,
instructions related to exit routes during emergency at the workplace
F. Professional
Skills Decision Making
The user/individual on the job needs to know and understand how to:
SB1. decide the position of body to best suit the welding position
SB2. decide on the polarity depending on the thickness of metal and other work
requirements
Plan and Organize
The user/individual on the job needs to know and understand how to:
SB3. plan work and organize required resource in coordination with team
member and superior
Customer centricity
The user/individual on the job needs to know and understand how to:
SB4. perform work as per agreed time schedule and quality
Problem solving
The user/individual on the job needs to know and understand how to:
SB5. avoid defects in weld by making required adjustments in the welding machine
and travel speed
Analytical Thinking
The user/ individual on the job needs to know and understand how to:
CON/N1258 Carry out shielded metal arc welding as per requirement in fabrication workshop or
construction site
56
SB6. correlate the sequence of painting works with respect to other
proceeding activity of other trade
SB13. analyze the actions of self that may result in wastage of material and
consumables so as to optimize their use
SB7. identify and assess the actions of self that may cause unsafe conditions
SB8. assess and determine appropriate arc length based on heat requirements
Critical Thinking
The user/individual on the job needs to know and understand how to:
SB9. evaluate the complexity of the tasks to and seek assistance and support
wherever required from the superior
SB10. analyze the causes of defects of weld and avoid repetition of same
CON/N1258 Carry out shielded metal arc welding as per requirement in fabrication workshop or
construction site
57
NOS Version Control
NOS Code CON/N1258
Credits (NSQF) TBD Version number
1.0
Industry Construction Drafted on 07/06/2015
Industry Sub-sector Real Estate and Infrastructure Construction Last reviewed on
25/10/2017
Occupation Fabrication Next review date
25/10/2019
Assessment Criteria for Construction Welder
58
Annexure
Nomenclature for QP and NOS
Qualifications Pack
[ABC]/ Q 0101
Occupational Standard An example of NOS with ‘N’
[ABC] / N 0101
Q denoting Qualifications Pack Occupation (2 numbers)
QP number (2 numbers)
9 characters
N denoting National Occupational Standard Occuptaion (2 numbers)
OS number (2 numbers)
9 characters
Back to top…
[Insert 3 letter code for SSC- CON]
[Insert 3 letter code for SSC- CON]
Assessment Criteria for Construction Welder
59
The following acronyms/codes have been used in the nomenclature above:
Sub-sector Range of Occupation numbers
Real Estate and Infrastructure 1-35
Rural Infrastructure Construction 36-50
Scope for new Sub-Sectors 51-99
Sequence Description Example
Three letters Construction Skill Development
Council of India
CON
Slash / /
Next letter Whether QP or NOS Q
Next two numbers Occupation code 12
Next two numbers OS number 01
Assessment Criteria for Construction Welder
60
CRITERIA FOR ASSESSMENT OF TRAINEES
Job Role Construction Welder MIG/TIG/SMAW
Qualification Pack CON/Q1252
Sector Skill Council Construction
Compulsory NOS Total Mark : 300
Marks Allocation
Assessment outcomes
Assessment Criteria for outcomes Total Mark
Out Of Theory Skills Practical
CON/N1206: Carry out grinding activities on structural steel elements
PC1. ensure that the grinder is in proper working condition
100
8 2 6
PC2. check that guard is installed on the machine and is secure and effective.
6 2 4
PC3. check and notify any inadequacy like incorrect type of grinder, incorrect consumable issued etc. in the grinding tool to appropriate authority
8 2 6
PC4. check the accessibility (in between joints, large distance from power source etc.)of the grinder for the work
8 2 6
PC5. identify the location of surface to be grinded. 8 2 6
Guidelines for Assessment 1. Criteria for assessment for each Qualification Pack will be created by the Sector Skill Council. Each
Performance Criteria (PC) will be assigned marks proportional to its importance in NOS. SSC will also lay down
proportion of marks for Theory and Skills Practical for each PC.
2. The assessment for the knowledge part will be based on knowledge bank of questions created by Assessment
Bodies subject to approval by SSC
3. Individual assessment agencies will create unique question papers for knowledge/theory part for assessment
of candidates as per assessment criteria given below
4. Individual assessment agencies will create unique evaluations for skill practical for every student at each
examination/training center based on assessment criteria.
5. The passing percentage for each QP will be 70%. To pass the Qualification Pack, every trainee should score a
minimum of 70% individually in each NOS.
6. The Assessor shall check the final outcome of the practices while evaluating the steps performed to achieve
the final outcome.
7. The trainee shall be provided with a chance to repeat the test to correct his procedures in case of improper
performance, with a deduction of marks for each iteration.
8. After the certain number of iteration as decided by SSC the trainee is marked as fail, scoring zero marks for
the procedure for the practical activity.
9. In case of successfully passing only certain number of NOS's, the trainee is eligible to take subsequent
assessment on the balance NOS's to pass the Qualification Pack within the specified timeframe set by SSC.
10. Minimum duration of Assessment of each QP shall be of 4hrs/trainee.
Assessment Criteria for Construction Welder
61
PC6. clean the metal surface to remove any foreign matter like dust, rust, paint, oil etc.
6 2 4
PC7. clamp and fix the metal before grinding 8 2 6
PC8. select appropriate consumables as per work 8 2 6
PC9. gather and identify information from superiors regarding the dimensions of grinding, angle of grinding etc. 8
2
6 PC10. select proper body position so that hand movements
are comfortable and smooth
PC11. move the grinding tool in desired patterns as per work requirements
8 2 6
PC12. provide proper pressure at correct angle as per work requirement to minimize the waste age of consumables
8 2 6
PC13. grind off defective weld joints to required depth joints
8 2 6
PC14. grind off excessive root reinforcements in welded joint if required.
8 2 6
Total 100 30 70
CON/N8001: Work effectively in a team to deliver desired results at the workplace
PC1. pass on work related information/ requirement clearly to the team members
100
7 2 5
PC2. inform co-workers and superiors about any kind of deviations from work
7 2 5
PC3. address the problems effectively and report if required to immediate supervisor appropriately
10 3 7
PC4. receive instructions clearly from superiors and respond effectively on same
7 2 5
PC5. communicate to team members/subordinates for appropriate work technique and method
10 3 7
PC6. seek clarification and advice as per requirement and applicability
7 2 5
PC7. hand over the required material, tools tackles, equipment and work fronts timely to interfacing teams
27 8 19
PC8. work together with co-workers in a synchronized manner
27 8 19
Total 100 30 70
CON/N9001: Work according to personal health, safety and environment protocol at construction site
PC1. identify and report any hazards, risks or breaches in site safety to the appropriate authority
100
7 2 5
PC2. follow emergency and evacuation procedures in case of accidents, fires, natural calamities
7 2 5
PC3. follow recommended safe practices in handling construction materials, including chemical and hazardous material whenever applicable
10 3 7
PC4. participate in safety awareness programs like Tool Box Talks, safety demonstrations, mock drills, conducted at site
7 2 5
PC5. identify near miss , unsafe condition and unsafe act 7 2 5
Assessment Criteria for Construction Welder
62
PC6. use appropriate Personal Protective Equipment (PPE) as per work requirements including: • Head Protection (Helmets) • Ear protection • Fall Protection • Foot Protection • Face and Eye Protection • Hand and Body Protection • Respiratory Protection (if required)
10 3 7
PC7. handle all required tools, tackles , materials & equipment safely
7 2 5
PC8. follow safe disposal of waste, harmful and hazardous materials as per EHS guidelines
7 2 5
PC9. install and apply properly all safety equipment as instructed
13 4 9
PC10. follow safety protocol and practices as laid down by site EHS department
13 4 9
PC11. collect and deposit construction waste into identified containers before disposal, separate containers that may be needed for disposal of toxic or hazardous wastes
7 2 5
PC12. apply ergonomic principles wherever required 7 2 5
Total 100 30 70
Assessment Criteria for Construction Welder
63
ELECTIVES
Elective 1: Construction Welder MIG
Total Marks: 200 Marks Allocation
Assessment outcomes
Assessment Criteria for outcomes Total Mark
Out Of Theory
Skills Practical
CON/1253: Carry out preparatory works for MIG welding operations
PC1. use and identify proper personal protective equipment such as hand gloves, nose mask, ear plugs, head protection, safety harness etc.
100 3 1 2
PC2. use appropriate welding masks 3 1 2
PC3. check for any gas leakages prior to striking arc 3 1 2
PC4. check the electrical connections for tightness and termination
3 1 2
PC5. inspect the lighting arrangement for adequacy 4 1 3
PC6. inspect and Clear the work area of any flammable objects like boxes, plastic etc. 4 1 3
PC7. ensure that subordinates are following safety norms 4 1 3
PC8. attend any and all prep talks and tool box talks organized on site
4 1 3
PC9. use and identify proper personal protective equipment such as hand gloves, nose mask, ear plugs, head protection, safety harness etc.
4 1 3
PC10. use appropriate welding masks 4 1 3
PC11. check for any gas leakages prior to striking arc 4 1 3
PC12. ensure that the gas cylinders are in upright positions 4 1 3
PC13. inspect electric collections for adequately tight and secure prior to commencing the work
4 1 3
PC14. ensure that work clamps are adequately secured and in correct polarity (-ve on welding bed and +ve on electrode)
4 1 3
PC15. ensure that welding tip and welding cup are in order 4 1 3
PC16. make initial adjustments of electrode consumption rate and voltage as per requirement. 4 1 3
PC17. ensure proper lighting 4 1 3
PC18. inspect that the gas valves are properly functioning and adjust the same as per instructions
4 1 3
PC19. ensure that electrodes are compatible with base metal requirement ventilation arrangement is available
4 1 3
PC20. check the electrodes comply with weld requirements 4 1 3
PC21. clean the surface to be welded before starting the welding operations
4 1 3
PC22. check that adequate root gap is available 4 1 3
PC23. check the bevel angle visually 4 1 3
PC24. make sure that surface is smooth and free of irregularities
4 1 3
Assessment Criteria for Construction Welder
64
PC25. remove any oxides, dust or foreign particles from the surface
4 1 3
PC26. ensure that the surface is not painted or galvanized 4 1 3
Total 100 30 70
CON/N1254: Carry out MIG welding as per requirement in fabrication workshop or construction site
PC1. interpret weld requirements from fabrication drawings
100
2 1 1
PC2. confirm the weld specifications if required from superiors
3 1 2
PC3. understand the weld requirements like position of weld, type of joint, number of passed required etc.
5 2 4
PC4. estimate the number or length of filler material required to complete the weld
5 2 4
PC5. pre heat the base material before welding if required 5 2 4
PC6. maintain correct body posture as per requirement of weld 5 2 4
PC7. adjust the wire stick out and regulate the gas flow rate accordingly 5 2 4
PC8. use appropriate patterns of welding as per position and type of joints
5 2 4
PC9. hold the welding gun at proper angle as per requirement 5 2 4
PC10. make required number of passes 5 2 4
PC11. make steady passes of weld to ensure proper heat generation and penetration 5 2 4
PC12. make adjustments in welding machine if required 5 2 4
PC13. disconnect the equipment correctly and store the same as per manufacture guidelines and site safety parameters
5 2 4
PC14. clean the welded joint 5 2 4
PC15. ensure proper penetration of weld 5 2 4
PC16. ensure that the weld is properly shielded by shielding gas 5 2 4
PC17. ensure proper heat input through arc 5 2 4
PC18. reduce the spatter spray during the welding 5 2 4
PC19. check the root pass for cracks 5 2 4
PC20. visually check for spatters, craters, undercuts 5 2 4
PC21. visually check the welded joint for cracks 5 2 4
Total 100 30 70
Assessment Criteria for Construction Welder
65
ELECTIVES
Elective 2: Construction Welder TIG
Total Marks: 200 Marks Allocation
Assessment outcomes
Assessment Criteria for outcomes Total Mark
Out Of Theory
Skills Practical
CON/1255: Carry out preparatory works for TIG welding operations
PC1. use and identify proper personal protective equipment such as hand gloves, nose mask, ear plugs, head protection, safety harness etc.
100
3 1 2
PC2. use appropriate welding masks 3 1 2
PC3. check for any gas leakages prior to striking arc 3 1 2
PC4. check the electrical connections for tightness and termination
3 1 2
PC5. inspect the lighting arrangement for adequacy 3 1 2
PC6. inspect and clear the work area of any flammable objects like boxes, plastic etc. 3 1 2
PC7. ensure that subordinates are following safety norms 3 1 2
PC8. attend any and all prep talks and tool box talks organized on site
3 1 2
PC9. Participate in all safety drills organized on site 3 1 2
PC10. use appropriate fire safety equipment and procedure in case of fire
3 1 2
PC11. identify and report any other unsafe act or condition to appropriate authority
3 1 2
PC12. keep the shielding gas cylinders in upright position only 3 1 2
PC13. ensure that shielding gas is purely inert e. g argon 3 1 2
PC14. check the pipes, valves/ regulator and flow meter is securely connected
3 1 2
PC15. taper the tungsten rod and sharpen the point of the electrode for better arc stability. The electrode should be grinded parallel to length
4 1 3
PC16. clean the electrode prior to use to remove any foreign matter
3 1 2
P17. adjust the tungsten stick out as per requirement based upon type of joint, base metal properties etc. 4 1 3
PC18. stack required number of filler rods\ electrodes as per instructions 3 1 2
PC19. clean the filler rod to remove any foreign particles in order to avoid weld contamination 3 1 2
PC20. ensure that filler material are compatible with base metal and as per weld specifications
3 1 2
PC21. ensure that work clamps are adequately secured and in correct polarity (+ ve on welding bed and -ve on electrode)
4 1 3
PC22. ensure that electrical connections are tight, secure and compatible with the equipment
3 1 2
PC23. clean the surface to be welded before starting the welding operations
3 1 2
Assessment Criteria for Construction Welder
66
PC24. check that adequate root gap is available 3 1 2
PC25. check the bevel angle visually 3 1 2
PC26. make sure that surface is smooth and free of irregularities
3 1 2
PC27. remove any oxides, dust or foreign particles from the surface
3 1 2
PC28. ensure that the surface is not painted or galvanized 3 1 2
PC29. ensure that the joint is properly secured against any movement
3 1 2
PC30. identify the joints to be welded, their location and position of welding
3 1 2
PC31. extract the weld specifications like type of joint, throat for fillet, number of passes required, specifications of filler rod, required heat input, preheat temperature etc. form relevant charts and drawings
4 1 3
PC32. estimate the number or length of filler material required to complete the weld
3 1 2
Total 100 30 70
CON/N1256: Carry out tungsten inert gas welding as per requirement in fabrication workshop or construction site
PC1. ignite the arc by superimposing the high frequency over high voltage
100
4 1 3
PC2. avoid touching the tungsten rod to the base metal 4 1 3
PC3. ensure that the filler rod is always inside the sheilding gas cover to avoid contamination during welding operation
5 2 4
PC4. select proper body position so that hand movements are comfortable and smooth
4 1 3
PC5. position head such that weld is clearly visible 4 1 3
PC6. ensure that weld location is properly illuminated and ventilated 4 1 3
PC7. use appropriate patterns of welding as per position and type of joints
5 2 4
PC8. hold the welding gun at proper angle as per requirement(70-80 ⁰ from base plate) 5 2 4
PC9. ensure that the arc length is not too large and is as per heat requirement 5 2 4
PC10. adjust the travel speed of weld to ensure proper penetration 5 2 4
PC11. make required number of passes 4 1 3
PC12. make steady passes of weld to ensure proper heat generation and penetration 5 2 4
PC13.make required adjustments in welding machine 5 2 4
PC14. disconnect the equipment correctly and store the same as per manufacture guidelines and site safety parameters
5 2 4
PC15. clean the welded joint 4 1 3
PC16. ensure proper penetration of weld 5 2 4
PC17. ensure that the weld is properly shielded by shielding gas 5 2 4
Assessment Criteria for Construction Welder
67
PC18. ensure proper heat input through arc 5 2 4
PC19. reduce the spatter spray during the welding 5 2 4
PC20. check the root pass for cracks 4 1 3
PC21. visually check for spatters, craters, undercuts 4 1 3
PC22. visually check the welded joint for cracks 4 1 3
Total 100 30 70
Assessment Criteria for Construction Welder
68
ELECTIVES
Elective 3: Construction Welder SMAW
Total Marks: 200 Marks Allocation
Assessment outcomes
Assessment Criteria for outcomes Total Mark
Out Of Theory
Skills Practical
CON1257: Carry out preparatory works for Shielded metal Arc welding operations
PC1. Use and identify proper personal protective equipment such as hand gloves, nose mask, ear plugs, head protection, safety harness etc.
100
4 1 3
PC2. Use appropriate welding masks 4 1 3
PC3. Check the electrical connections for tightness and termination
4 1 3
PC4. Inspect the lighting arrangement for adequacy 4 1 3
PC5. Inspect and Clear the work area of any flammable objects like boxes, plastic etc.
4 1 3
PC6. Ensure that subordinates are following safety norms 4 1 3
PC7. Attend any and all perp talks and tool box talks organized on site
4 1 3
PC8. Participate in all safety drills organized on site 4 1 3
PC9. Use appropriate fire safety equipments and procedure in case of fire
4 1 3
PC10. Identify and report any other unsafe act or condition to appropriate authority
4 1 3
PC11. inspect electric collection to be adequately tight and secure prior to commencing the work
4 1 3
PC12. attach the work clamps to the base metal 4 1 3
PC13. select the polarity depending upon the thickness of material and other parameters of work requirement
4 1 3
PC14. store the electrodes correctly as per manufactures guidelines
4 1 3
PC15. clean the surface to be welded before starting the welding operations
4 1 3
PC16. check that adequate root gap is available 4 1 3
PC17. check the bevel angle visually 4 1 3
PC18. make sure that surface is smooth and free of irregularities
4 1 3
PC19. remove any oxides, dust or foreign particles from the surface
4 1 3
PC20. ensure that the temperature at joint is as per specifications
4 1 3
PC21. ensure that the surface is not painted or galvanized 4 1 3
PC22. ensure that the joint is properly secured against any movement
4 1 3
PC23. identify the joints to be welded, their location and position of welding
4 1 3
PC24. extract the weld specifications like type of joint, throat for fillet, number of passes required, specifications of filler rod, required heat input, preheat temperature etc. form relevant charts and drawings
4 1 3
PC25. estimate the number or length of filler material required to complete the weld
4 1 3
Total Marks Total 100 25 75
CON/N1258: Carry out
PC1. ignite the arc by striking the electrode on the base metal like a match
100 3 1 2
Assessment Criteria for Construction Welder
69
shielded metal arc welding as per requirement in fabrication workshop or construction site
PC2. select proper body position so that hand movements are comfortable and smooth
5 2 4
PC3. position head such that weld is clearly visible 3 1 2
PC4. ensure that weld location is properly illuminated and ventilated
5 2 4
PC5. use appropriate patterns of welding as per position and type of joints
5 2 4
PC6. push or drag the arc as per requirement 5 2 4
PC7. ensure that the Arc length is not too large and is as per heat requirement
5 2 4
PC8. adjust the travel speed of weld to ensure proper penetration
5 2 4
PC9. make required number of weld passes 5 2 4
PC10. make steady passes of weld to ensure proper heat generation and penetration
5 2 4
PC11. clean the weld after each pass to scrap out the slag formed on the surface of weld
5 2 4
PC12. make required adjustments in welding machine 5 2 4
PC13. disconnect the equipment correctly and store the same as per manufacture guidelines and site safety parameters
5 2 4
PC14. efficiently dispose of the stubs of electrode left after completing the welding
3 1 2
PC15. clean the welded joint by removing slag formed during the welding process
5 2 4
PC16. ensure proper penetration of weld 5 2 4
PC17. ensure that the weld is properly shielded throughout the operation
5 2 4
PC18. ensure proper heat input through arc 5 2 4
PC19. reduce the spatter spray during the welding 5 2 4
PC20. check the root pass for cracks 5 2 4
PC21. visually check for spatters, craters, undercuts 3 1 2
PC22. visually check the welded joint for cracks 3 1 2
Total Marks Total 100 30 70