Services
Specialist Areas - Flue Gas and Air Ducting
Pjd have over 20 years experience of repair, modification, design and manufacture of small and large ducting systems.
With our comprehensive service incorporating; Inspection of existing ductings and detailed repair reports, we also give relevant recommendations for any possible improvements for client consideration.
Our reports include the condition of expansion joints and dampers if so required.
Typical inspection areas:
- Duct walls, floor & roof (visual and NDT thickness checks)
- External and internal bracing
- Flow plates and internal baffles
- Expansion joints (cloth & rigid)
- Expansion joint carrier structure
- Dampers (internal blades, shafts, bushes & bearings)
- Damper actuators and linkage mechanism
- Ducting access and explosion doors
- Thermal insulation & cladding
- Paint/ coating condition
Typical repairs:
- Over-plate or inset-plate repair to ducting walls, fully seal welded.
- Renew internal and or external bracings as required.
- Over-plate ducting joint from inside ducting should the bolted joint have failed.
- Replace whole duct sections.
- Local repair to damper vanes / renew vanes as required including manufacture.
- Renew damper shaft bushes / bearings as required.
- Overhaul damper linkage mechanism and actuators.
- Renew expansion joint as required either the whole joint or by section.
- Renew expansion joint carrier steel, the whole carrier, or by section.
Considerations for design:
- Production of technical specifications for purchase of materials and out-sourced design and manufacture.
- Calculating the weights of the flue and duct systems and their imposed loads.
- Calculating thermal expansions and suitably dividing up the ducts into separately supported and braced sections.
- Design of stiffened duct walls and external and internal bracing.
- Design of sling systems and other supports, braces and guides.
- Specification of design duties for expansion joints.
- Production or review of relevant erection method statements.
We assist our clients to spend wisely, particularly when there are tough spending restraints. Under such restraints we recommend only those repairs necessary to achieve the desired running regime.
We aim to give the very best in quality and service by building up a history of the ductings that enables us to plan and produce work scopes and budgets for future planned works / outages.
It's all about getting to know your plant "delivering excellence" and "exceeding your expectations".