Operation (maintenance) documentation is intended to provide full compliance with requirements on design, production and use of products and equipment.
For products and technical appliances used in hazardous industries the development of operation documentation is a necessary procedure. Technical passports and manuals are the basis of further product certification process and other important docs issue necessary to release in a free circulation.
Operation documentation shall conform to GOST standards and Technical regulations.
Technical requirements define requirements for specific product, requirements for product manufacturing process. Technical requirements describe procedures whereby meeting the requirements can be verified (quality control).
Technical requirements have the same rank that the GOST standards and can substitute the GOSTs for the products with quality features different from those in the GOST or for the products which are not covered by any GOST.
Technical requirements are not mandatory document. Manufacturer develops TR on his own free will. But they need to be approved and included in the consolidated register.
Technical requirements could be developed by manufacturer of product or by special authorized bodies in accordance with GOST standards on requirements development.