Who we are
Founded in 1955, John Biach established his company in response to a growing need to assure leak free closure on large vessels through the use of customized stud tensioner designs to create the high loading requirement and consistent nut seating. Beginning with the Shippingport reactor vessel in the mid 1950s, Biach engineers worked closely with Nuclear Steam Supply System (NSSS) providers to develop the specialized stud tensioning systems needed for the varying vessel designs as the nuclear industry emerged. Differing load requirements, stud and nut designs and vessel diameters all required custom designed stud tensioning systems.

Biach’s expertise grew into other areas: stud removal and installation tooling and stud elongation measurement equipment. Similarly, other plant projects required controlled stud loading and accurate nut seating. Biach provided custom systems for drywell heads, valves (safety relief, stop, main steam isolation and throttle valves), ICI flanges, vessel anchor bolting, steam generator manways and reactor coolant pump casings and motor coupling assembly.

As de-regulation puts pressure on the industry for shorter outages, Biach engineers work with sites to speed up the tensioning process with upgrades to its Quick Disconnect (QD and QD-H designs) tensioner designs, electronic / hydraulic pumping system (EPN), communication system and built in elongation monitoring feature.

Biach supports and dedicates itself to the nuclear sites with new equipment design, long term project documentation, rapid spare parts replacement, operator training programs and in the field technical support.