English to Russian Bus/Financial Engineering: Industrial строительство НПЗ

Встречается в анализе проекта НПЗ:
The *engineering warranty* period is typically one year from RFSU (RFSU - Ready for Start-Up). It is normal for contractor to obtain, at the time of equipment purchase, back-to-back mechanical warranties from the individual equipment vendors.

Other Liabilities
In addition to LDs, the provision for defects (or *engineering warranty*) is also included under the overall liability limit, also unlimited “make good” liabilities (for engineering defects) can be negotiated, but typically only for a defined time period.

Эту гарантию дает подрядчик по строительству.

Заранее спасибо!