Grün Engineering
Stainless twin wall exhaust riser on a wall support rising past a brick parapet
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Flagship project Generator exhausts GE4054

Blackpool Victoria Hospital

Two generator exhausts for the hospital's standby power, from survey to certificate in 40 days.

Site
Blackpool Victoria Hospital
Town
Blackpool, North West
Sector
Healthcare
Status
Complete

Key facts

generators, one exhaust route each
2
flanged twin wall, 450 OD, 50 mm insulation
Ø350
of flue, 5 m per route
About 10 m
on site, 7 and 8 January 2026
2 days
pressure test on the final day
2,499 Pa
survey to certificate of conformity
40 days

The challenge

The generators are the hospital's back-up supply. The customer wanted the exhausts in fast, with help on diameters, termination heights and bracketry.

Soft ground outside ruled out a MEWP.

The route had to stay clear of nearby air intake vents.

What we did

The outside work was done from fixed scaffold after a risk assessment.

Inside, test points and a flanged horizontal hung on strut channel from the roof steels, out through the wall vent.

Outside, a tee with a drain sits on a dead-weight wall support, with a riser up to a high temperature terminal above the parapet.

A fixings problem brought a hard stop. We reset the method and reissued the RAMS before carrying on.

The result

Both systems were pressure tested on the final day.

The certificate of conformity was issued on 9 January 2026.

Six weeks from survey to installation, with Christmas in the middle.

On site.

6 photographs. Tap a photo to see it larger.

Blackpool Victoria Hospital, Blackpool. External riser: base tee on its wall support, up past the parapet.
Blackpool Victoria Hospital, Blackpool. Tee and wall bracket on the outside riser.
Blackpool Victoria Hospital, Blackpool. Wall vent finished with a purpose-made cover plate.
Blackpool Victoria Hospital, Blackpool. Inside: the horizontal on strut channel from the roof steels.
Blackpool Victoria Hospital, Blackpool. Exhaust run from the silencer flange out through the wall.
Blackpool Victoria Hospital, Blackpool. Both terminals above the generator building.

Finishing details

The details we leave behind.

  • Cover plate at a wall vent

    Cover plates

    The wall vent is finished with a purpose-made cover plate round each flue.

  • Tee and wall bracket on an exhaust riser

    Dead-weight support

    Each riser stands on a tee with a drain, carried on a dead-weight wall support.

  • Exhaust terminal above a parapet

    Clear of the intakes

    Terminals above the parapet, with the route kept clear of the nearby air intake vents.

Handover

What the client got.

The documents on record for this job. Handover documents normally go into the customer's project folder before the engineers get home.

  • Survey30 November 2025
  • Quote and drawingDrawing 0000-001, 2 December 2025
  • RAMSReissued on site after the method reset
  • Pressure test recordBoth systems, final day
  • Certificate of conformity9 January 2026
  • Progress reportsWith photos, 8 January 2026

Related services

Generator exhausts and silencers Testing and surveys Design and calculations

Short job records: GE4054.

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