MBS/RM875/Healthcare Operating Theatre Unit

1. Scope

This specification relates to the provision, installation and commissioning of a

modular operating theatre to be supplied with all the related mechanical & electrical

plant. The facility is to be designed with floor and wall areas to accommodate all of

the plant and equipment set out below in order to afford such space as is compliant

with HASAW regulations and other relevant codes of practice in force. The complete

facility will comprise of an operating theatre, and attendant changing rooms

manufactured and supplied to the following performance specification and an

adjacent plant room to be supplied by the customer.

2. Building Specification

All timber and wood-derived products must be from independently verifiable legal and sustainable sources. A list of assessed certification schemes that currently meet the Governments requirements can be found at www.forest.net/cpet or:-

http://www.defra.gov.uk/sustainable/government/advice/public/buying/products/construction/wood -products.htm

2.1Structural Frame

2.1.1 Roof frame: Shall consist of cold rolled steel beams with cold rolled joists at

max 1 .200m centres. All members to bolted together utilising proprietary

cleats to form a rigid steel frame.

2.1.2 Floor frame: Shall consist of cold rolled steel beams with cold rolled joists

set level to top beams. Main structural members to be bolted together

utilising proprietary cleats to form a rigid steel frame. End beams to be

strengthened to minimise damage when being moved.

2.1.3 The roof and floor frames to be connected together at the extreme four

corners of each module using 100mm x 100mm RHS columns, these being

internal to the fabric of the structure.

Element Specification

Ceiling height 2.85m nominal FFL to underside of ceiling to operating room 2.7m to the scrub, prep, dirty utility and anaesthetic areas

Roof beams 400mm deep

Floor beams 300mm deep

Floor loading 7.5kN//m 2 floor to all areas

Roof decking Warmdeck using proprietary panels

Wall construction 18mm Tulsa T&G CCPTs plywood

Internal cladding Vinyl faced gypsumboard, or Corus CES steel cladding

External wall finish Plastisol steel bonded to plywood

2.2 External / Internal walls

Wall panels shall consist of a plastisol steel faced plywood outer skin, an

insulation core of rockwool, and an inner lining of either vinyl faced gypsum board

or hygienic Corus CES steel sheet cladding. The inner lining to depend on the room

schedule and will suit room application.

2.3 Roof

Roof will be a warmdeck (or similar) construction comprising proprietary steel faced

composite panels fixed to and supported by the steel roof frame.

2.4 Ceiling

The ceiling shall consist of a suspended ceiling grid system with either Armstrong

Orcal (or similar) metal pan tiles to hygienic areas or Armstrong Bioguard (or

similar) regular tiles to general areas.

2.5 Floor finishes

Floor finishes shall be 2mm Polysafe, (or similar), non-slip flooring. The operating

room vinyl will also be anti-static. The floor / wall junction shall be formed using a

continuous coved section to allow ease of cleaning. All vinyl joints will be fully

welded to prevent water ingress.

2.6 Doors

External doors shall consist of powder coated aluminium construction and framing

system with 24mm double glazed units, complete with weatherseals.

Internal clinical doors shall be constructed from non-porous reinforced polyester

resin encapsulating a core of expanded PVC or fire resistant insulation. Stainless steel

frame sets and ironmongery will be provided. All other internal doors will be Koto

Veneer (or similar).

The doors into and out of the anaesthetic room shall be provided with door

automation. A digital lock shall be provided to the door leading to the staff

ancillary areas.

2.7 Thermal Insulation

The calculated average 'U' value for external walls, floor and roof excluding any door

and window shall comply with the Building Regulations Part L2A.

2.8 Fire Performance

Roof: External FAA Rating

Walls: Externally and internally class O rating, with 30 or 60 min fire resistance to

suit layout.

Ceiling:- Class O rating

2.9 Finishes - External

2.9.1 External Walls

Plastisol coated steel: Goosewing grey.

2.9.2 External Trim

Fascias and skirting: plastisol Merlin Grey.

2.9.3 Maintenance

External walls, surfaces and trims shall require no maintenance for up to 25 years in

normal conditions, other than for occasional washing down with mild detergents.

2.10 Finishes Internal

2.10.1 Internal Wall

White steel coated to operating theatre, anaesthetic, scrub, dirty utility and

prep.

2.10.2 Ceiling

Armstrong Orcal white steel tiles to the operating theatre, anaesthetic, scrub,

dirty utility and prep. Armstrong Bioguard (or similar) regular tiles coloured to

all other areas.

2.10.3 Floor vinyl

Polyflor range (or similar):- Polysafe 2mm Heavy-duty safety flooring. All

Vinyl fully welded and coved.

2.10.4 Electrical trunking

PVC conduit recessed into walls. All surface trunking where installed to be

white.

2.11 Structural design

All units to be designed and manufactured in accordance with relevant British

Standards, Codes of Practice and current Building Regulations.BS 6767 Parts 1 and

2: 1998/9

BSEN 1991-1-1:2002 & -1-7:2004

BSEN 1995-1-1:2004 & A1:2008

BS 5950-1:2000

Additional structural support to be provided to locate the UCV laminar flow canopy,

operating light and medical gas pendants.

2.12 All standard units are designed to meet following loadings:

Roof super load: 0.75kN/m2

Floor super load: To BSEN 1991-1-1:2002 (Deflection designed for 7 .5kN/m2)

(Natural frequency >4Hz)

Wind loading: 0.79kN/m2

3 . B u i l d i n g S e r v i c e s a n d Connections

T h e costing should allow for Mechanical and Electrical connections to the existing

services as appropriate.

Mains cold water supply

Domestic hot water supply LPHW

Mains electrical connection

Drainage

All services supplied by the client will terminate within 1 m of the required

connection points on the theatre facility.

The DX chiller plant shall be integral to the new theatre as will AGSS plant.

4 . E n g i n e e r i n g S e r v i c e s

4.1. Air handling

The air-handling unit is to be located in plant room (supplied by others) and

supply/extract ductwork will be taken to serve the various areas in the facility.

Partitions will be fitted as appropriate with pressure relief/stabiliser dampers. Air will be

admitted to the theatre through the use of ceiling supply diffusers.

4.1.1 The theatre suite will comply, and be installed in accordance with the

requirements of HTM 03/1 as a stand-alone facility.

4.1.2 Assume and cost for a separate extract fan without any heat reclaim

from the extracted air.

4.1.3 Motorised pressure relief dampers shall be provided within the air-

handling unit supply and extract ductwork.

4.1.4 Include and cost for foil faced fibreglass ductwork insulation.

4.2 Heating Medium shall be LPHW.

The following temperatures have shall be used for the purposes of costing.

Summer: 30C DB/20C WB

Winter: 8C DB/Fully saturated

4.3 DX Cooling

DX cooling is to be provided to serve the air handling unit cooling coil from

multiple condensers located on the roof adjacent to the plant-room.

The coil is to be connected to each condensing unit via systems of

refrigerant pipe-work. Include and cost for foil faced fibreglass pipe

insulation, supplied to comply with building regulation standards to be

applied to pipe-work within the false ceiling and pipe-work enclosures,

insulation to be covered with PIB where installed externally.

4.4 UCV Canopy Specification

A UCV Canopy will be provided to the operating theatre. The canopy is to be

precision manufactured from mild steel, finished powder coated white to

provide a hard durable finish. Fabricated in four separate sections to house

the following

Fans: Direct driven single-phase centrifugal type with curved forward

impeller. Variable speed motors.

Silencers: Large supply and return silencers built into each of the four

modules, incorporating acoustic flame retardant foam panels Class O

fire rating and finished with a PVC membrane.

Pre-filters: Disposable type 50mm thick glass fibre media 95% efficient

to 5 micron.

Main filters: Minipleat glass fibre HEPA type housed in 60mm deep

extruded aluminium frame with protection grids on both sides. Gel seals

system. Efficiency 99.997 to 5 micron.

Diffusers and air grilles: Removable perforated air diffusers manufactured

from mild steel and powder coated brilliant white to match the main

body. Removable type return grilles mounted flush on the underside of

the Ultra Flow Canopy.

Servicing and access requirements: Four quick release panels on

underside of main unit provide simple access to the fans and pre-filters.

Canopy side walls: Clear acrylic panels housed in rigid extruded aluminium

frame, without exposed fastenings. Powder coated white to match unit

4.5 The Ultra Clean Canopy shall be supplied to provide for the following:-

4.6 Electrical installation

Power supplies and control wiring to all plant and equipment shall be installed

to BS 7671: 2008 17th Edition.

4.6.1. Distribution

Three phase type b distribution boards and main panel board. Electrical

wiring shall be supplied in twin and earth within recessed plastic or metal

conduit.

4.6.2. IPS / UPS

Bender (or similar) IPS and UPS systems shall be provided and located in the

plant-room.

4.6.3. Voice / Data Installation Containment shall be provided.

4.6.4. Lighting

Recessed IP54 sealed Fluorescent fittings to all areas, generally prismatic

controlled, cat 2 and dimmable to theatres.

4.6.5. Emergency lighting

3 hour Conversions to general lighting with exit signs to escape doors and

external bulkhead fittings to escape doors. Local test key switches to all

emergency fittings.

4.6.6. Theatre Light

A Brandon Galaxy Ultra 53 Operating lamp (or similar) shall be provided as

Attribute Required Performance

Size of clean zone 2800 x 2800

Minimum supply on high speed 3m3/sec

Noise level 1.5m above floor in centre of clean zone not exceeding

55 dBA

Minimum average down-flow velocity

0.38m / s

Clean zone air changes 500 times/hour

Set back down-flow velocity 0.19m /s

Set back supply air volume 1.5m3/ sec

Set back noise level 42 dBA

Set back clean zone air changes 42 dBA

Filtration standard Pre-filters 80% to Eurovent 4/5 BS 6540 EU3 Main bacteria filters 99.997% Efficiency to BS 3928 Eurovent 4/4

Cruciform lighting level 500 lux inside clean zone

Weight of ultra clean module 1250 kg

standard.

4.6.7. Fire Alarm

Stand alone GENT addressable system comprising of heat /smoke detectors

to all areas and sounders to 75dB. Wiring in FP200 within the structure and

within high impact mini-trunking. Connection to the existing system will be

provided by others.

4.6.8. Surgeons Control Panel

The operating theatre facility shall be provided with a Brandon) (or

similar) SCP to incorporate the following;-

Air Sampling duct

Analogue Time of day clock

Digital elapsed time clock

Elapsed time clock controls

Temperature indicator

Humidity indicator

Ventilation normal indicator

Battery in use indicator

Ventilation high speed indicator

Ventilation set back indicator

Ventilation dirty filter indicator

Mains socket outlet

General lighting switches

Ventilation on / set-back switch

Operating lamp controls

Twin frame X-ray viewer

Temperature controller

Humidity controller

Medical gas pressure indicators

4.7 Medical Gases

The entire medical gas installation shall be supplied in accordance with

HTM 02/01 and Regulation C11 requirements. The theatre shall be

supplied with two medical gas pendants:

4.8 Anaesthetists Pendant incorporating

1 No Oxygen Outlet

1 No Nitrous Oxide Outlet

2 No Vacuum

1 No 4-Bar Medical Air

1 No 7-Bar Medical Air

1No AGSS

4No Twin socket outlets

4.9 Surgeons Pendant incorporating:

1 No Oxygen Outlet

1 No Nitrous Oxide Outlet

2No Vacuum

1 No 4-Bar Medical Air

1 No 7-Bar Medical Air

1No AGSS

4No SS

4.10 Medical alarms and emergency AVSU valves shall be included.

4.11 The anaesthetic room will incorporate wall trunked mounted services for:

1No Oxygen

1No Vacuum

1No AGSS

4.12 Hot and Cold Water Services

All pipe-work shall be copper, joints will be either compression or capillary solder

joints.

Each item of equipment shall be fitted with a ball type valve for isolation.

A return pipe shall be connected all hot tap outlets to ensure hot water is readily

available to all draw off points.

All concealed pipe-work and pipe-work in the roof space and in the plant room will be

insulated with foil faced glass fibre or pre-formed expanded foam thermal insulation

to building regulation standards as Class O Armaflex, to the thickness to comply with all

relevant regulations and specifications.

On completion all hot and cold water systems will be chlorinated to BS 6700.

4.13 Sanitary ware

Bidders to include for the supply and installation of all sanitaryware as follows:-

Male staff changing: 1 No. Male shower unit + 1 No. w/c with wash-hand basin

Female staff changing: 1 No.1 Female shower unit + 1 No. w/c with wash hand

basin

Patient change room 1 No. shower + 1 No. w/c with wash hand basin

All shower units to be electric units.

Integrated plumbing systems will be used on all sanitary ware.

4.14 Soil and Waste Systems

The sanitary pipework system would be installed utilising a system of plastic

pipework with solvent welded fittings all in accordance with statutory and public health

requirements.

Intumescent fire collars will be installed on 50mm pipe and greater, where crossing

building fire compartment walls.

5 . C o m m i s s i o n i n g a n d C l e a n i n g

The whole facility shall be deep cleaned - duct access will be incorporated nominally

every two metres to allow this.

The facility shall be fully commissioned and set to work, inclusive of all balancing and

witnessed testing.