KYF Test keeps your work equipment and installations compliant, traceable and safely operating on three axes: periodic inspection services, tests and analyses and contracting and project services. From pressure vessels to lifting machines, electrical installations to storage racks, transformer oil analyses to medium voltage cells — we work with an accredited examination mindset, calibrated measurement gear and signed-report discipline. Below you will find what each service covers, the legal intervals and how the process runs, step by step.

Why Is Periodic Inspection a Legal Requirement?

Law No. 6331 on Occupational Health and Safety obliges employers to have work equipment periodically inspected, maintained, measured and tested — and to document the results. Scope, method and intervals are set by the Regulation on Occupational Health and Safety in the Use of Work Equipment and the relevant TS EN standards. Unless legislation or the standard states otherwise, the interval cannot exceed one year; on pressure vessels the proof test runs at 1,5 times the operating pressure. Running unchecked equipment is more than an administrative fine — in an accident it is the document that hardens the employer's legal liability.

SGK statistics show a major share of workplace accidents originates from equipment failure and missed maintenance. Periodic inspection is the planned engineering system that catches invisible fatigue, corrosion, insulation degradation and safety-device faults before the accident happens.

What Is a Type-A Inspection Body?

Inspection bodies are classified Type A, B or C under TS EN ISO/IEC 17020. Type-A bodies are fully independent third parties — free of design, production, supply and user sides. That independence is the foundation of the reports' legal and technical validity. KYF Test reports are accepted as official evidence in Ministry of Labour workplace audits, SGK accident investigations, court proceedings, insurance expertise and ISO 45001 management-system audits.

The Service Triangle: Inspection, Analysis, Contracting

1. Periodic Inspection Services

The full tree sits under Our Services, split into three families. On the inspection side the leading groups are:

• Pressure vessels: steam and hot-oil boilers, heating boilers, autoclaves, air receivers, expansion tanks-hydrophores, boilers and cooking kettles — internal-external examination, safety-gear trials and 1,5 times pressure proof.
• Lifting and handling machines: overhead and gantry cranes, chain hoists, forklifts, reach trucks, pallet trucks, stackers, manlifts, goods lifts, conveyors, ramps, slings and magnetic lifters — rope-hook-brake measurement and load trials.
• Installation inspections: portable extinguishers, fire detection-alarm, ventilation, earthing, residual current devices, lightning protection, cathodic protection, batteries, transformers and thermal camera scanning.
• Machines and tools and industrial door-rack systems: TS EN ISO 12100/60204-1 safety rules, light-curtain and emergency-stop function trials, plus TS EN 15635 damage-classified rack audits.
• Work machinery: dozers, loaders, backhoe loaders, excavators, tipper trucks, graders, scrapers, rollers, asphalt pavers and concrete pumps — TS EN 474 series with ROPS-FOPS, brake and visibility focus.

2. Tests and Analyses

The tests and analyses family makes the equipment's inner state visible: on transformers and transformer breakers — insulation oil dielectric strength, dissolved gas analysis (DGA), moisture, acidity and density; Buchholz relay, thermometer, contact resistance, torque-tightness and cell insulation tests; LVD-scope insulation, high-voltage, leakage and earth-continuity measurements; and rack static calculation analysis. These readings are not one-off snapshots but a trend file that grows year by year: the fault becomes visible in the data before it crosses the threshold.

3. Contracting and Project Services

New plants, renovation and energy infrastructure works gather under contracting and project: high current systems (panels, busbar, cabling, lighting, UPS, generator, earthing), low current infrastructure (data, cameras, fire detection, voice, telephone, satellite-TV), medium voltage facilities (cells, cable-termination, test-commissioning, project-acceptance approval), mechanical installations (HVAC, fire extinguishing, plumbing, steam-hot oil, compressed air, process) and camera systems. Contracting joins calculation, installation and verification under single responsibility; the handover file becomes the reference baseline of the periodic inspection regime.

Inspection Frequency by Equipment Type

This is the ceiling; where the standard or the manufacturer gives a shorter period, the narrowest one prevails. Above-critical use (heavy industry, dusty-humid-coastal sites) tightens intervals on a risk basis.

Why the Report Is a Critical Document

A periodic inspection report is the official engineering document proving the equipment is fit for safe use — carrying measurement values, limit comparison, finding level and removal suggestion together. Its main fields of use:

• Ministry of Labour (ÇSGB) workplace audits and SGK accident investigations
• Legal evidence in courts; insurance policies and expertise processes
• ISO 45001 / ISO 9001 management-system audits
• Investment, relocation and handover technical files

Per the regulation, reports must be retained through the equipment's service life and for at least 5 years after decommissioning. Every report is the comparison baseline of the next control: the operator that reads trends manages faults with a maintenance plan instead of buying them.

Advantages of Working with KYF Test

• One roof, three competencies: the same engineering ecosystem in inspection, analysis and contracting — boundary errors close before they surface.
• Independence and legal validity: reports are prepared signed, measured and limit-referenced per TS EN ISO/IEC 17020 understanding and Turkish legislation.
• Calibrated measurement infrastructure: diagnostic depth with DGA oil analysis, thermal camera, micro-ohmmeter, VLF-PD and leakage test gear.
• Inventory and calendar management: an equipment-based periodic calendar is established; renewal dates are tracked without misses.
• Fast reporting: field measurement, signed official report delivered promptly.

Key Legislation at a Glance

• Law No. 6331 (OHS Law) — employer's equipment control duty
• Work Equipment Regulation — interval, method and competency rules
• Internal Electrical / High Current / Earthing Regulations — the electrical side of the duties
• Regulation on Protection Against Fire in Buildings — extinguishing and detection systems
• PED 2014/68/EU, TS EN 13445/12952-12953 — pressure equipment and boiler rules
• TS EN 15635/15512, TS EN 13241, TS EN 474, TS EN 62271, TS EN 60076 — rack, door, work machinery, MV switchgear and transformer standards
• TS EN ISO/IEC 17020 — inspection body accreditation

How the Process Runs Step by Step

1. Share your equipment types and quantities as an inventory list.
2. Last inspection dates and upcoming renewal windows are set together.
3. Create the appointment and survey plan via our contact page.
4. On the agreed date our engineer teams attend the site and run measurements, proofs and examinations with calibrated equipment.
5. Results are compared with limits; non-conformities are recorded with finding level and a removal suggestion.
6. The official report is delivered promptly; next year's periodic calendar ties into this file.

To review the whole service tree at a glance, visit our Our Services page; for a control-tracking-suggestion plan tailored to your facility, reach us via contact.

Author: KYF Test Engineering Team • Accredited Type-A Inspection Body • Last Updated: September 2026