SBS Refractory Service

The annual overhaul is always in July

In July nobody needs the district heating

Installations:Biomass boiler of a CHP plant, plus several heating plants
Service:Annual overhaul, brickwork repair, lining, joint care
Period:2019 to 2025, 24 deployments
Overhaul window:First half of July, when district heating load is lowest
Crew:1 to 3 fitters per deployment
Project overview

Initial situation

A municipal utility in Franconia runs one combined heat and power plant and several heating plants. The biomass boiler can only come off the grid when nobody needs district heating — in other words, at the height of summer. Between 2019 and 2025 SBS looked after this utility's plants across 24 deployments. The major annual overhaul fell in the first half of July six years in a row.

Scope of services

  • Biomass boiler
  • Annual overhaul
  • Brickwork repair
  • District heating
  • Several plants

Project data

InstallationsBiomass boiler of a CHP plant, plus several heating plants
ServiceAnnual overhaul, brickwork repair, lining, joint care
Period2019 to 2025, 24 deployments
Overhaul windowFirst half of July, when district heating load is lowest
Crew1 to 3 fitters per deployment
Challenges

The task

The overhaul window is set by the weather, not by planning: if July turns cold, the window closes

An overhaul running two and a half weeks is a different thing from a one-day repair — both occurred at the same utility

Several plants, one contact: what applies at the CHP plant does not automatically apply at a heating plant

Between the overhauls come the small things — manhole bricks, joints, a tube failure. They arrive without warning

Our solution

The SBS approach

The July date became a fixed point in the year. In five consecutive years the overhaul started on a Monday in the first half of July — plannable for both sides.

Crew size is cut to the length: three people over two and a half weeks for the major overhaul, one or two for a single-day job in between.

Over six years the small work landed here too — brickwork, manhole bricks, flat burners, fibre lining. Someone who stands inside the boiler in July still knows it in October.

The work is spread across the CHP plant and the heating plants of the same utility. One point of contact, several installations, the same standard.

Results

Measurable results

The key figures of the “The annual overhaul is always in July” project

6 years
in a row with the overhaul in the first half of July
24
deployments at the same utility, 2019 to 2025
5 of 6
overhauls starting on a Monday
1 day – 2.5 weeks
range of deployment lengths

Planning a project?

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