CSWIP - Certification Scheme for Personnel

What CSWIP - Certification Scheme for Personnel does

CSWIP (Certification Scheme for Personnel) is a globally recognised personnel competence assurance scheme operated by TWI Certification Ltd, a wholly-owned subsidiary of The Welding Institute, headquartered at Granta Park, Great Abington, Cambridge. Established in 1969 and rebranded to its current form in 2006, CSWIP delivers assessment and certification of individual competence across more than 50 schemes spanning welding inspection, non-destructive testing (ISO 9712), underwater and topside inspection, plastics welding, BGAS-CSWIP pipeline integrity, cathodic protection, plant inspection, welding supervision, instruction, and procedure review. Certifications are issued against international standards (ISO 9712, ISO 17637, ASME IX, ISO 15614-1, ISO 3834, EN 1090, EN 15085, ISO 17782/NORSOK M-650) and operate on 5-year renewal and 10-year recertification cycles.

The scheme is monetised through initial certification fees, periodic renewal and recertification fees (with a 5% price increase implemented in December 2025), examination and re-assessment charges, merchandise sales (logbooks and self-inking rubber stamps), and a free online certificate verification service that monetises indirectly by protecting brand integrity. Distribution is indirect: candidates must complete courses from an approved training-provider network or TWI Training and Examination offices before sitting CSWIP examinations, with TWI Certification Ltd in Cambridge administering certification globally. The Certification Management Board, composed of industry stakeholders, governs scheme content and standards. As of July 2026, TWI Certification Ltd's ISO/IEC 17024 UKAS accreditation is temporarily suspended, halting the issuance of UKAS-accredited certificates while existing certifications remain valid per their scheme validity periods.

CSWIP serves a long tail of individual professionals and enterprise sponsors in safety-critical industries — notably nuclear (Sellafield Ltd apprenticeship partnership), oil and gas, pipeline integrity, plastics fabrication, and plant integrity — supported by a 13-person operating team and partnerships with EWF/IIW (Welding Coordinator Diploma), the Engineering Council (EngTech registration), and approved training providers worldwide. The scheme holds 50,000+ active certificate holders and has issued more than 70,000 certificates cumulatively across its history.

Name

CSWIP - Certification Scheme for Personnel

Legal name

TWI Certification Ltd

Website

https://cswip.com

Company type

Private

Founded year

1969

Operating status

Operating

Headcount range

11–50 employees

Ownership category

akta.pro rank

Product category

Personnel Certification Services

NAICS

Testing Laboratories and Services (541380), Testing Laboratories and Services (54138)

SIC

Services-Testing Laboratories (8734), Services-Engineering Services (8711)

akta.pro primary industry

Third-Party Certification, Code Compliance & Regulatory Inspection (ASME/API/ISO) (EUAEAHAN)

akta.pro secondary industries

Welding Codes, Safety & Compliance Training (AWS/ASME/OSHA) (EDAOADAG), Non-Destructive Testing (NDT) & Inspection Services (IMAIACAI)

Keywords

• Personnel certification
• Welding inspection
• Non-destructive testing
• Competence assurance
• Pipeline integrity

Headquarters

HQ city

Cambridge

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Others, Technology or R&D, Infrastructure

Revenue model

1. Certification Fees: Fees for initial certification applications covering examination and assessment costs. Fees vary by certification scheme type and level.
2. Renewal and Recertification Fees: Periodic renewal fees at 5-year intervals and recertification examination fees at 10-year intervals. A 5% price increase was implemented in late 2025 to keep pace with inflation and rising operational costs.
3. Merchandise Sales: Sales of CSWIP logbooks and official rubber stamps to certificate holders. Order forms available via website with international shipping.
4. Examination Services: Fees for examination administration, re-assessment, and appeals processes. Late application fees and administrative charges may apply.

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels6 records

Core offering

CSWIP provides personnel competence assurance certification across welding inspection, non-destructive testing (NDT), plastics welding, underwater and topside inspection, pipeline integrity (BGAS-CSWIP), welding quality control, welding procedure review, plant inspection, and cathodic protection. Certifications are awarded following approved training and examination, with structured 5-year renewal and 10-year recertification cycles, supported by an online verification service for employers and sold alongside official logbooks and rubber stamps.

Product overview

CSWIP (Certification Scheme for Personnel) is a comprehensive personnel competence assurance certification scheme provided by TWI Certification Ltd, offering multiple certification categories. The portfolio includes Welding Inspection (Visual, Welding, Senior), Non-Destructive Testing (NDT) covering 14 methods including ultrasonic, radiographic, magnetic particle, and advanced techniques like PAUT and ToFD, Topside and Underwater Inspection, BGAS-CSWIP pipeline certifications, Plastics Welding certification, Welding Quality Control, Review of Welding Procedures, Examiners, Cathodic Protection, Plant Inspection, and Welding Instruction/Supervision. The scheme operates on a 5-year renewal and 10-year recertification cycle, supported by a verification service for employers and merchandise including official logbooks and rubber stamps. CSWIP certifications align with international standards including ISO 9712, ISO 17637, and ASME IX.

Differentiator

Problem solved

Functional benefit

Products and services

• Welding Inspection Certification Three-tier certification (Visual Welding Inspector, Welding Inspector, Senior Welding Inspector) widely used in the welding industry, enabling experienced welding engineering professionals to demonstrate and expand their competence and career prospects.
• Non-Destructive Testing (NDT) Certification Comprehensive NDT certifications aligned with ISO 9712 covering conventional methods (ultrasonic, magnetic particle, liquid penetrant, radiographic, visual/optical, ACFM, eddy current, leak detection) and advanced methods (AUT, PAUT, ToFD, computed radiographic, guided wave testing).
• Topside and Underwater Inspection Certification Certifications for personnel working underwater, topside and offshore in inspection and NDT, including Underwater Inspector (3.1U, 3.2U), ROV Inspector (3.3U), Underwater Inspection Controller (3.4U), and Visual Inspectors for Upstream Oil and Gas.
• BGAS-CSWIP Pipeline Integrity Certification Certifications addressing competence requirements for pipeline integrity job roles including Agricultural/Environmental Inspector, Welding Inspector, NDT Inspectors, Painting, Coating and Pipeline Inspectors, providing clear progression pathways for the pipeline industry.
• Plastics Welding Certification Certifications for plastic welding and inspection including Plastics Welder, Visual Plastics Welding Inspector, Plastics Welding Inspector, and Senior Plastics Welding Inspector, demonstrating competence in welding thermoplastics (PE, PP) in new constructions and repair.
• Welding Quality Control Coordinator Certification Certification confirming competence to verify material, production and inspection data against specifications, standards and regulations, ensuring welded products satisfy required acceptance criteria.
• Review of Welding Procedures Certification Certification assuring competence in reviewing Welding Procedure Qualification Records (WPQR), Welding Procedure Specifications (WPS), and welder qualifications to ASME IX or ISO 15614-1 standards.
• Welding and Brazing Examiner Certification Internationally recognised competence assurance for personnel performing welder or brazer qualification testing, including CSWIP Welding Examiner, CSWIP Welding Examiner for Vehicle Repair, and CSWIP Brazing Examiner.
• Cathodic Protection Personnel Certification Three-level certification enabling personnel to demonstrate competence in monitoring and surveillance of cathodic protection systems protecting pipelines, marine structures and ships.
• Plant Inspector Certification Two-level certification applicable to both works and in-service inspection for statutory and non-statutory equipment, adding value to plant integrity management across various applications.
• Welding Instructor Certification Certifications for CSWIP Welding Instructors and CSWIP Specialist Welding Instructors competent in providing high-quality training essential for ensuring the skill and knowledge of welders being trained.
• Welding Supervisor Certification Internationally recognised mark of competence assuring that essential welding tasks are supervised by personnel with appropriate knowledge, skill and experience, helping employers satisfy ISO 3834 and EN 1090 requirements.
• Certificate Verification Service Online verification service providing guarantee of authenticity for CSWIP and BGAS-CSWIP certificates, protecting the personal data of certificate holders and enabling employers to verify validity before employment.
• Certificate Renewal and Recertification Service Periodic renewal (5-year) and recertification (10-year) services requiring submission of verified work experience evidence and Continuous Professional Development (CPD) records.
• CSWIP Logbook Official CSWIP logbook providing 5 colour-coded sections for personal, employment, CPD, eyesight tests and notes, enabling certificate holders to maintain accurate record-keeping for renewal processes.
• CSWIP Rubber Stamp Official CSWIP self-inking rubber stamp displaying name, candidate number, and level of certification for professional documentation sign-offs.

Quantifiable outcome

• Over 50,000 certificate holders worldwide trust CSWIP for competence assurance
• +3 more outcomes

Named customers5 records

Segments7 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Seven partnerships are on record, tiered flagship and core.

• Sellafield LtdflagshipStrategic or Co-development Partner · 1 January 2016Collaborative partnership to develop the Nuclear Welding Inspection Technician (NWIT) Apprenticeship - a four-year program enabling individuals to gain skills required for the nuclear industry. TWI Cert conducts end point assessments and professional interviews for EngTech Registration. Key industry stakeholder in creating and utilizing the apprenticeship program.
• TWI Certification LtdcoreStrategic or Co-development Partner · 1 January 1969CSWIP schemes are provided by TWI Certification Ltd, a wholly-owned subsidiary of The Welding Institute, formed in 1993 to deliver certification in accordance with international standards. TWI Cert develops and implements certification schemes, approves training courses, and authorises assessments to satisfy industry needs under stakeholder governance of the Certification Management Board.
• The Welding InstitutecoreStrategic or Co-development PartnerParent organisation of TWI Certification Ltd. Provides professional engineering institution services including Code of Conduct and Ethical Principles that CSWIP certificate holders must abide by. Offers membership and professional registration services including EngTech registration for CSWIP certificate holders.
• UKAS (United Kingdom Accreditation Service)coreOthersUKAS provides accreditation for TWI Certification Ltd to ISO/IEC 17065 (previously ISO/IEC 17024 for personnel certification). Accreditation temporarily suspended as of July 2026. Provides international recognition of certification body competence.
• European Welding Federation (EWF) and International Institute of Welding (IIW)coreStrategic or Co-development PartnerTWI Cert is the Authorised Nominated Body and Authorised Nominated Body for Company Certification for EWF and IIW. Offers Personnel Certification Scheme (PCS) for those holding EWF/IIW diplomas including Welding Coordinator Diploma at Basic, Inspector, and Engineer levels.
• Engineering CouncilcoreStrategic or Co-development PartnerSeveral CSWIP certificates have been approved by the Engineering Council as meeting the academic requirements for Engineering Technician (EngTech) registration. CSWIP certificate holders can access TechWeldI and AWeldI Registration schemes through The Welding Institute for professional qualification.
• TWI Training and Examination ServicescoreImplementation/ SI/ Consulting PartnerPrimary examination delivery partner offering training and examination services for CSWIP certifications across UK and international locations. Contact: TWI Ltd, Granta Park, Cambridge CB21 6AL.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• DNV: DNV is a global TIC and maritime classification incumbent that certifies NDT, welding inspection and offshore personnel, overlapping with CSWIP Topside and Underwater Inspection schemes and competing for the same regulated asset owners.
• Lloyd's Register: Lloyd's Register provides industrial and welding personnel certification and qualification services in maritime, offshore and energy, offering an accredited alternative to CSWIP for inspectors working on classed assets.
• TÜV Rheinland: TÜV Rheinland is a global testing, inspection and certification (TIC) incumbent that certifies welders, inspectors and QA/QC personnel across industrial sectors, providing overlapping welding/inspection personnel certification as part of a much broader TIC portfolio.
• Bureau Veritas: Bureau Veritas is a large TIC incumbent offering welding inspector certification and NDT personnel qualification services alongside marine, offshore and industrial asset services, competing with CSWIP in oil & gas and offshore end markets.

Others

• BSI (British Standards Institution): BSI is the UK national standards body and a TIC provider that publishes the underlying standards (BS EN ISO 17637, BS EN 1090, EN 15085) that CSWIP schemes are built on, and runs adjacent personnel and management system certifications in related industrial domains.

Direct peers

• AWS (American Welding Society): AWS operates the Certified Welding Inspector (CWI) and Senior CWI programmes, the most recognised welding inspection personnel certification globally and a direct alternative to CSWIP Visual/Welding/Senior Welding Inspector.
• IIW (International Institute of Welding): IIW, via its Authorised Nominated Bodies including TWI Cert itself, grants International Welding Specialist, Engineer and Technologist diplomas and IWP/IWIP certifications that overlap CSWIP welding inspection/coordinator qualifications.
• EWF (European Welding Federation): EWF delivers harmonised welding personnel and company certification across Europe, with TWI Cert as its UK Authorised Nominated Body; it offers an alternative path to the same welding coordinator and inspector qualifications that CSWIP certifies.
• ASNT (American Society for Nondestructive Testing): ASNT is the primary US-based personnel certification body for NDT technicians and inspectors, offering ASNT SNT-TC-1A, NAS 410 and CP-189 employer-based and central certification routes that directly compete with CSWIP NDT certification in the same buyer pools.
• BINDT (British Institute of Non-Destructive Testing) - PCN Scheme: BINDT operates the PCN (Personnel Certification in Non-Destructive Testing) scheme, the principal UK/Europe-based direct competitor to CSWIP NDT certification, covering similar NDT methods and industrial segments.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/twi_ltd
• YouTubeyoutube.com/twiltd
• Facebookfacebook.com/twiltd
• LinkedInlinkedin.com/company/cswip-certification-scheme-for-personnel

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about CSWIP - Certification Scheme for Personnel