Greptun — Product Assurance for Space Missions

What we do

Product Assurance Management

We provide comprehensive Product Assurance Management and documentation tailored to the specific needs of each project and product. Our services cover the preparation and maintenance of PA documentation, tailoring of applicable ECSS standards, verification of compliance with customer requirements, and coordination of PA activities across the project and its suppliers.

Quality Assurance

We provide Quality Assurance services in accordance with ECSS-Q-ST-20C and ISO 9001, ensuring that quality requirements are properly implemented throughout the project lifecycle. Our activities include quality planning, process monitoring, audits, non-conformity management and continuous improvement, helping ensure compliance with customer requirements and applicable standards.

Materials & Processes

We manage the Materials and Processes programme in accordance with ECSS-Q-ST-70C, supporting design engineers in selecting space-proven materials and processes and assessing their qualification status. Our services include coordinating ESA approval for new qualifications, identifying technical risks and cost drivers, maintaining Declared Materials, Mechanical Parts and Processes lists, and representing the client at customer reviews.

Documentation Management

We support technical documentation and configuration management to ensure that product information, project records and configuration changes remain accurate, traceable and controlled throughout the project lifecycle, in accordance with applicable project and ECSS requirements.

Current projects

Artistic visualisation of the LISA mission detecting gravitational waves

Source: European Space Agency (ESA)

HPS Romania · ESA / OHB

LISA Spacecraft – Radiator Panels

We provide Product Assurance and engineering support to HPS Romania, an ESA/OHB supplier, for the LISA spacecraft radiator panels. Our involvement began in the initial project phases and currently focuses on material and process qualification, technical documentation, and consultancy on manufacturing and testing approaches. We will continue supporting the project through to final hardware delivery.

ESA’s Laser Interferometer Space Antenna (LISA) will be the first space-based observatory dedicated to detecting gravitational waves - ripples in spacetime produced by some of the most powerful events in the Universe, including merging black holes.

Background and experience

Michal Gabco in a cleanroom beside a spacecraft assembly

Greptun was founded by Michal Gabco, a space industry engineer with experience in Product Assurance, Materials & Processes, and AIT. Before starting Greptun, Michal worked at S.A.B. Aerospace s.r.o., INVENT GmbH, and OHB System.

His work has covered different stages of space hardware development, from material and process qualification to integration, testing, and Product Assurance for spacecraft and instruments. He has contributed to projects such as LISA, HERA, CO2M, Comet Interceptor, and SPARROW.

His experience includes Product Assurance for LISA's mechanical and thermal subsystems, the central structure and sandwich panels of CO2M, and the SPARROW payload, where he also served as deputy Spacecraft PA Manager.

In addition to project-level responsibilities, Michal has experience in company-level REACH compliance and Obsolescence Management, supporting the management of regulatory requirements and the risks associated with the continued availability of materials and components. His broader quality expertise also includes Quality Management Systems in accordance with ISO 9001, complementing his experience with ECSS quality requirements and Product Assurance processes.

From project requirements to controlled delivery.

1. Understand

Understand project objectives, applicable requirements, customer expectations, and scope.

2. Plan

Define activities, responsibilities, documentation, qualification needs, and compliance evidence.

3. Verify

Monitor implementation, assess compliance, address technical risks, and coordinate verification activities.

4. Deliver

Maintain traceable records, resolve outstanding issues, and support the required project reviews and handover.

Have a problem worth solving?

Don't hesitate to contact us!

greptun@greptun.com

Greptun s.r.o.

Vápenická ulica 736/20, 971 01 Prievidza, Slovakia

IČO 57829390 · DIČ 2123204105

IČ DPH SK2123204105, according §7a of Act No. 222/2004 Coll. on Value Added Tax

Registered in Commercial Register of the District Court of Trenčín, Section: Sro, Entry No. 58715/R

When the details matter.