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Modular Operation Theatre

Air Handling Systems (with Laminar Air Flow)
Walling, Ceiling, Flooring & Doors
Single Arm Moveable Pendant
Operation Theatre Control Panel
Medical Gases
Pressure Relief Dampers
Fusible link Type Fire Dampers
Supply/ Return Air Diffusers & Grills
Aluminium Ducting with Nitrile Insulation
Plenum with Mini Pleat

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Clean Room Equipments

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Clean Room / Clean Zone System

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About Melius

Melius, formed in the year of 2011 is engaged in Designing, Engineering and Manufacturing of the following :

Clean Room Systems
Conventional / Modular OTs
Renovation of old OTs
OT Integration
Air Handling Units
Industrial Filters
Medical Gas Pipelines Installation
Clean Room Equipments like Laminar Flow Workstations | Globe Box | Fan Filter Unit (FFU) | Air Curtain | Dynamic & Static Pass Box | Air Shower | Bio Safety Cabinet | Dispensing / Sampling Booth etc
Testing and Validation of Operation Theatres / Clean Room System and Equipments as per various standard and protocols.

The Chief Executive of the company, Mr. B. Chakraborty, is a Doctorate in Management Studies with degree in Foreign Trade and advance level degree in IT, is having more than 26 years experience in various field of Filtration technology, Entrepreneurship and Operation.

In brief, Melius is focused to cater best available technology in the field of filtration – separation, Clean Room and Clean Room Equipment, with high degree of care in respect of quality, safety, human welfare and environmental cleanliness

cover pic — Biswajit ChakrabortyDirector, CEO

Entrepreneur, expert in Operation Theater and Clean Room
LinkedIn

Laminar Flow Workstations provide a high degree of localized control for critical processes. The Laminar Flow Workstations operate by drawing ambient air, under negative pressure, into the top of the unit. This air first passes through a pre-filter which traps the larger dust and dirt particles. The blower then directs this pre-filtered air, now under positive pressure, through the 99.99% efficient HEPA filter engulfing the entire work area with sterile, unidirectional ultra-clean air. This air travels at a velocity calculated to prevent the intrusion of unfiltered room air into the work area. It also washes away particles that may be generated by manipulations within the Workstations.
Sterile, particle-free air is essential in such diverse processing areas as electronic assembly, sterile packaging and hospital pharmacy I.V. preparation. These processes and products require isolation from the contaminant typically found in ambient air. This clean environment can be best achieved and maintained by utilizing filtered laminar flow air in an appropriate workstation.

Vertical Laminar Flow Workstations

The Vertical laminar Flow Benches meet the same high standards for ultra-clean, particulate-free air as our Horizontal Laminar Flow Benches Series. The work area is bathed with filtered air directed downward by the low profile HEPA fan filter module at the top of the unit. These free-standing units are used primarily for parts assembly and/or to house process equipment which, due to its configuration, is best protected by vertical laminar airflow.

Horizontal Laminar Flow Workstations

The Horizontal Laminar Flow Workstations is designed for the handling of materials wherever a particle-free work environment is required. The work area of the Horizontal Laminar Flow units is continuously bathed with positive pressure, horizontal laminar flow air that has passed through a HEPA filter (High Efficiency Particulate Air).

A clean, controlled, positive-pressure environment is essential to your work, whether you are handling chemicals or pharmaceutical/biological materials, welding fibre optic components to create a hermetic seal, or processing lithium batteries or LEDs. Glove Boxes from Melius provide an ideal solution to creating the atmosphere and environment you need to safely and efficiently perform your work.

Glove Boxes from Melius provide Safe, Reliable Solutions for :

· Chemical Research and Manufacturing

· Biological Processing and Safety

· Materials Research and Manufacturing

· Pharmaceutical Research and Manufacturing

· Titanium Welding and Heat Treating

We don't just sell systems - we design, manufacture, and even install them expressly for you. This means we know our products and what they can do for you. It also means we can monitor quality control every step of the way so you will be sure your Glove Box works right every time.

Features and Specifications

· Available in three widths, 1200mm (47"), 1800mm (71"), and 2400mm (94").

· A dual microprocessor control specifically designed for gloveboxes. Easy to use with all key information available on one screen. (A touch screen is also available, which can be PLC controlled.)

· A 0-60 cfm stainless steel blower controls circulation.

· The glove box is designed to maintain an atmosphere less than 1 ppm O2 and 1 ppm H2O. This is attained by a gas purification system that is easily accessible, and has automatic valves.

· A large antechamber is installed with auto control optional. A rapid transfer chamber is also available.

· Vacuum pump.

· 0.3 micron inlet and outlet filters.

· Box shelving standard or customized.

Fan Filter Unit (FFU) is air cleaning equipment to supply purified air to the clean room for manufacturing semiconductor , liquid crystal, etc. The installation space is the system ceiling grid. For a large clean room, the number of required FFU is from several hundreds to several thousands.

Concept of FFU Development

1. To reduce running cost by saving energy
2. To reduce construction cost and term by thin, light and compact structure
3. To reduce initial cost by total design of clean room including noise spec.etc

Advantage of clean room with FFU :

The construction period can be shortened
The degree of cleanness from class 1 to class 1000 can be set and the degree of cleanness can be set at each area
Because the back in the ceiling is a low-pressure, the potential of the leakage is low
Bay method or through the wall method is possible by the arrangement of layout of FFU
The velocity of the air flow can be set at each area
Flexible increase or change of the clean room is possible by the arrangement of FFU

SPECIFICATION	Filter
	HEPA	ULPA
EFFICIENCY	0.3um---99.995%	0.1um---99.9995%
	0.3 um---99.995%
FILTER FRAME	Aluminum ( 15mm )
DEPTH	50 / 65 mm (without gasket)

MODEL	FFU-T15-1/2	FFU-T25-1/2	FFU-T24-1/2	FFU-T31-1/2
	2'X4'FFU	3'X4'FFU	2.5'X5'FFU	4'X4'FFU
	Galvanized cold rolled or SS 304
ENCLOSURE	Galvanized cold rolled or SS 304
DIMENSION(mm)	575(w)X1175(L)	875(w)X1175(L)	725(w)X1475(L)	1175(w)X1175(L)
POWER	Ac 1 phase 110v , 220v or 3 phase 220v,380v 50 / 60 Hz
Speed control	Three speed control
TOTAL STATIC PRESSURE	210Pa	230Pa	220Pa	230Pa
AIR FLOW	12--16CMM	18--25CMM	18--24CMM	25--31CMM
NOISE	48--52dBA	50--56dBA	51--56dBA	52--58dBA
POWER CONSUMPTION	80W	112W	112W	130W
GROSS	24Kg	30Kg	30Kg	36Kg

Air Curtain

Melius air curtains are quiet, attractive, and affordable and can help you create a more comfortable front-end entrance. Non re-circulating air curtains are used on a variety of doorways where additional climate control is desired, Melius's units are attractive and easy to install above any existing entrance where a minimum of 14" of headroom is available. The unit is for single or double doors, both automatic and manual. Air curtains are designed to provide an invisible barrier between your sterile processing area and un-controlled environment. Prevents entry of dust, smoke, flies etc.

Drugs & Pharmaceutical

Hospitals & Clinics

Food processing industries

Cleanroom

Cold storage

Electronic industries

Computer facilities

Showrooms & Restaurants

Model	Voltage (Vt)	Freq. (Hz)	Nominal Power (Wt)		Max Air Velocity (m/s)		Noise (dB)		Air Volume (M³/h)		Net Weight (Kg)	Weight (Kg)	Installing Height (m)	Dimension (mm)
Model	Voltage (Vt)	Freq. (Hz)	Hi	Low	Hi	Low	Hi	Low	Hi	Low	Net Weight (Kg)	Weight (Kg)	Installing Height (m)	Dimension (mm)
TAC-206	220 - 240	50	120	115	11	8	55	53	950	700	10	12.5	2.5-3	640x229x270
TAC-209			140	135			57	55	1150	900	12	14		940x229x270
TAC-210			230	225			58	56	1280	1000	15	16.5		1040x229x270
TAC-212			230	225			58	56	1750	1200	15	17		1220x229x270
TAC-215			280	225			59	57	2180	1500	18	19.5		1500x229x270
TAC-218			330	250			60	58	2300	1670	25	26.5		1840x229x270
TAC-220			400	270			61	59	2500	1800	28	29.5		2056x229x270

TAC-1506	220 - 240	50	200	195	13	10	67	65	1066	800	14.5	15.5	3.5-4	600X262X312
TAC-1509			230	225			69	67	1680	1320	17.5	19		946X262X312
TAC-1512			300	295			71	69	2570	1800	24	25		1226X262X312
TAC-1515			330	325			71	69	3210	2250	35.5	26.5		1502X262X312

Melius Pass Boxes are self-contained units installed at the entrance to Clean Room. They minimize the amount of particulate contamination entering the Clean Room by reducing operator "traffic". Equipment and materials are passed into the Clean Room via the pass box, which is equipped with a electro-magnetic interlock system that prevents both doors from being opened at the same time. Melius offer Stainless Steel construction for both Transfer and Trolley Pass Box, making them cost efficient for all manner of projects, from Chemical, Hospital to Clean Room environment. The specific design of the units offers a flush interior to the Hatch making it easy for clean-down procedures, with no protruding or recessed areas that promote Bacterial Growth, complete with Toughened Plate Glass Doors.

Both types of pass thru Pass Box come complete with our unique electro-megnetic Interlock System to aid you in the reduction of Cross Contamination and Pressure Loss whilst passing product between your “Clean” and “Dirty” areas.

Melius Pass Box is an inexpensive way to maintain the cleanliness of your Clean Room and is easy to install and adaptable to existing facilities.

Rigid and rust-proof construction of electro-galvanized steel sheets
Abrasion-resistant epoxy coated steel
Easy to clean stainless steel base
Acrylic panel door gives clear view of internal chamber
Electro-magnetic Interlock system with reinforced construction reduces cross-contamination
Easy to install and adaptable to existing facilities

Model	SPB-1	SPB-2
External Dimensions(LxWxH)	660x560x450mm	760x660x650mm
Internal Dimensions(LxWxH)	500x500x400mm	600x600x600mm
Gross Weight (kg)	120 kg	150 kg
Net Weight (kg)	90 kg	120 kg
Crating Size (mm)	810x810x710mm	910x910x910mm

TYPE	Opening Width	Overall Width	Opening Height	Overall Height	Depth
KEC-PB400	400	580	400	520	400
KEC-PB500	500	680	500	680	500
KEC-PB600	600	780	600	780	600
KEC-PB700	700	880	700	880	700
KEC-PB800	800	980	800	520	800

Equipment and materials are passed through the air shower pass box while particulate contamination is washed off with high velocity HEPA-filtered air jets. Contaminated air is then taken in through the base of the unit, filtered, and recirculated into the chamber. To facilitate the proper removal of particulate contamination, Melius Air Shower Pass Boxes are built-to-order with a standard shower duration of at least 12 seconds.

· Rigid and rust-proof construction of electro-galvanized steel sheets

· Abrasion-resistant oven-baked powder-coated finish

· Antimicrobial coated structure eliminates 99.9% of bacterial presence on external surfaces within 24 hours.

· Permanently lubricated direct drive centrifugal blower

· Equipped with a high quality Minipleat HEPA filter (filtration efficiency of more than 99.99% at 0.3 microns)

· Ultra-quiet noise level of less than 70 dBA during operation

· Stainless steel nozzles provide high velocity air jets for an efficient scrubbing action to remove particulates contamination

· Acrylic panel door allows a clear view of the internal chamber

· Easy to clean stainless steel perforated base

· Easy to install and adaptable to existing facilities

Model	DPB-3
External Dimensions(LxWxH)	1120x540x1500 mm
Internal Dimensions(LxWxH)	800x500x600 mm
Air Change	1360 per hour
Air Velocity (m/s)	22 m/s
Number of nozzles	4
Air Shower Duration (seconds)	Factory setting at 12 seconds (adjustables)
Filtration Elements	Main Filter: HEPA Filter Pre-filter: Washable non-woven polyester fibers
Filtration Efficiency	Main Filter: >99.999% at 0.3um Pre filter: Arrestance 90%, efficiency 20%
Main Body	1.5 mmt electrogalvanized steel/White oven baked epoxy powder-coated finish
Power Supply	International electrical configurations are available
Power Consumption	0.30 kW
Gross Weight (kg)	274 kg
Net Weight (kg)	150 kg
Crating Size (mm)	1270x700x1650 mm

The Dispensing Booth is a containment solution for the weighing, the handling and the dosing of chemical and pharmaceutical active products with the operator outside the LAF (laminar airflow) area. This Dispensing Booth is a vertical laminar flow of Class M 3.5 (Fed. Std. 209 E) air, with a vertical return grid on the frontal side supplied with absolute filter on recovery and recirculation air. The cabinet is designed with part of the air re-circulate and quote of air exhausted outside, after absolute filtration.

The operator and product protection by cross contamination between environmental / product and vice versa will be obtained with a physical containment into handling area powder, with a slight negative pressure inside the cabinet and a airflow barrier at level of front working aperture. The air front barrier is designed to permit an aspiration equal to 30% of the total air with a minimum air frontal velocity of 0.40 m/s and recirculation of the remaining 70% of the air on the working area in laminar air flow condition equal to a velocity of 0.45 m/s +/-20%.

The sterility – cleanness of working area is guaranteed by a filtration of the air by absolute HEPA filter H14 and velocity of 0.45 m/s +/-20%. As far as product protection from the operator is concerned, it also relies on the down-flow of the HEPA filtered air, as well as on the appropriate personal protection devices like individual garments including mask, headgear, white coat, gloves and compliance with all the sanitary and safety regulations recommended in the Operating Manual of the Dispensing Booth and in the user safety procedures (like CGMP).

Designs	Vertical (VLF) airflow, fully recirculating
Standard	ISO 14644-1 Class 5
Construction	SS 304 / S.S 316 or CRCA Powder Coated
Cleanliness	Class 100 as per US FED STD 209E
Particle Retention	0.3 micron & above
Noise Level	65 dB on On Scale 'A' ± 5
Filters	1st Stage - EU4 High Capacity pre-filters 2nd Stag - EU8 Bag filters Final Stage - H14 HEPA filters.
Fan	Double inlet centrifugal, 5.5 kW, 4 pole
Velocity	90 FPM ± 20 %
Controls	Fan on/off with manual speed controller
Downflow	0.5 m/sec ± 10%
Pressure Differential	0-25 mm inclined Manometers / Magnehelic Gauge
Electrical	230 V single Phsae , 50 Hz
Illumination	Fluorescent tubes diffusers
Blower Assembly	Statically & Dynamically balanced DIDW type
Internal Dims.	1500 to 6000 (w) 1900 to 2400(d) 2100(h)
SWD	Safe Working Depth 1800mm or 1300mm

Biological Safety Cabinet

The class I safety cabinet provides a wide performance envelope for the user from aerosol hazards and other particulate within the cabinets work area. All extract air is exhausted through HEPA (high efficient particulate air) filtration generally to atmosphere although recirculation models are also available through Safety Cabinet Solutions. Inflow air velocity should be between 0.7 and 1.0 m/sec and by their design nature are less susceptible to poor working techniques of the user or less than ideal room air conditions.

Biological Safety Cabinet

The class II microbiological safety cabinet (class II MSC), unlike the class I microbiological safety cabinet (MSC) provides protection to both the user & the material within the cabinet's working environment. Protection for the user is provided by means of an inflow air curtain whilst the sample material in the cabinet is protected from the dirty laboratory environment by a constant stream of HEPA filtered air (airflow velocities inflow > 0.4 m/s & down flow between 0.25 and 0.5 m/sec). All Class II cabinets are designed for work involving microorganisms assigned to biosafety levels 1,2 and 3. These cabinets provide a suitable environment for cell culture propagation and may also be used for the formulation of nonvolatile antineoplastic or chemotherapeutic drugs.

The class III microbiological safety cabinet (often wrongly referred to as a glove box) is a highly specialized product designed for the most hazardous work typically carried out in a containment level 3 or 4 facility. Like the class II safety cabinet this class of cabinet provides protection for both the user and product albeit both to a much higher degree. Class III cabinet protection to the user is provided by means of barrier protection with the user working through gloves or gauntlets and protection to the material within the cabinet by means of the air being HEPA filtered as such, unlike the class II MSC open fronted cabinet the class II is almost immune to outside air influences. The inside of the cabinet operates at a negative pressure to the surrounding environment with the exhaust air being vented through a HEPA filter to atmosphere.

	Class I	Class II	Class III
Glass working height	200mm	200mm
Front screen	Laminated glass	Laminated glass	Polycarbonate
Inner liner	Crevice free 316 stainless steel	Crevice free 316 stainless steel	Crevice free 316 stainless steel
Work surface	316 stainless steel	Recessed 316 stainless steel	Recessed 316 stainless steel
Construction	Mild steel with powder coating	Mild steel with powder coating	Mild steel with powder coating
Noise Level	<65 dBA at 1 m	<65 dBA at 1 m	<65 dBA at 1 m
Lighting	800 lux at work surface	800 lux at work surface	800 lux at work surface
Filters	99.999% HEPA	99.999% HEPA	99.999% HEPA
Electrical supply	230v / 50Hz single phase (other voltages available)	230v / 50Hz single phase (other voltages available)	230v / 50Hz single phase (other voltages available)
Internal widths available	1000mm / 1200mm / 1500mm	1000mm / 1200mm / 1500mm / 1800	1000mm / 1200mm

Modular Operation Theatre

There are basic policy decisions required for the construction of an operation theatre department and it is imperative that a high standard of discipline be maintained to minimize the incidence of infection and cross-infection. In order to determine this, the hospital department has been divided into zones as given bellow:

1. Protective Zone: The protective zone is the entrance area for patients, staff and supplies where normal hospital standards of cleanliness apply and where normal everyday clothes can be worn.

2. Clean Zone: In order to pass between the protective zone and the clean zone everything must undergo a system of transfer. This is the main area of the department and all patients, staff and supplies must be clean. A strict cleaning routine applies and everybody must undergo a complete changing routine to enter.

3. Aseptic Zone: The aseptic zone is the inner area where conditions are as near sterile as possible. It applies to two rooms in each suite: the theatre and the theatre supply room. All staff who might handle exposed instruments must be scrubbed and gowned.

4. Disposable Zone: In the disposable zone all exposed instruments (used or unused), pathological specimens, lotions, suction jars and soiled linen are passed from the theatre to a disposal corridor and returned for cleaning, sterilizing or any other necessary process.

Any hospital which has been a large operating department also has a great deal of traffic, to preserve the departmental character, a control system must be imposed over all people entering or leaving the hospital.

TECHNICAL SPECS OF A MODULAR OPERATION THEATRE

a) In accordance with the customer preferences it can be provided in different antibacterial colors.
b) The juncture of wall and ceiling and any screw heads are filled with special filler and a radius is provided to all the comers to ensure it is easy to clean and keep hygienic.
c) The walls are constructed using special composite wallboard panels.
d) The floor of the Operating Theatre is finished with Static Conductive PVC.
e) The Doors are Semi Hermetic Sealing Sliding Doors.
f) Air flow inside the Operation Theatre is provided by a Downward Laminar Flow System.
g) A Stainless Steel wail mounted Storage Cabinet is provided within the Operation Theatre.

1. Air Handling Systems (with Laminar Air Flow)

Air handling system, OT interior & OT equipments. There are several options available in each part from where options are selected as per need, choice & budget. OT being most critical area in a hospital complex, it is necessary to control OT air in respect of temperature, humidity & particulate matter content of air, micro-organisms, i.e. bacteria, viruses, fungi etc.

Air handling systems process air through various stages. Air is cooled, moisture is removed, air is filtered to remove dust particles, bacteria, viruses; some air handling systems additionally remove gases, odors and other volatile organic compounds.

Laminar Air Flow is non-turbulent air flowing in parallel lanes vertically. LAF is filtered air coming over operative area from diffuser plenum above it. Plenum is fitted with HEPA (High Efficiency Particulate Air) filters of 0.3micron at 99.99% efficiency. Many times it is seen that plenum also works as light source above operative area; it has CFL/LED lights inside which provide clear shadow less light over operative area.

It is necessary to maintain particular air velocity in LAF so that filtered air coming over operative area carries bacterial load away from it. According to international standards it should be between 90-120 FPM (feet per minute). NABH (National Accreditation Board for Hospitals & Healthcare) also recommends the same.

Highly clean air of LAF falls in CLASS 100/ISO 5 category. When this air moves further in OT after leaving LAF area it mixes with less clean air of the room along with heat, moisture, bacterial load carried from operative area. It gradually looses it's clean state and while it reaches the last point in OT from where it is sent back to Air Handling Unit. Air in peripheral area of LAF normally falls in CLASS 10,000 - 100,000 categories depending on Air Handling Unit & OT size.

LAF can be made in various sizes. Apart from these standard sizes any other customized size can also be made.

Air Handling Unit has 3 filtration stages in total. First is 10 micron pre-filter, second 5micron fine-filter and third 0.3 micron HEPA filter. Out of three, first two are fitted in Air Handling Unit and last i.e. HEPA is fitted in plenum above operative area.

Fresh air is added to this within AHU. Positive pressure is created to restrict outside air entering OT though door etc. Necessary cascade pressure relief dampers are provided in wall to relieve excess pressure in hermetically sealed areas.

Air conditioning is done within Air Handling Unit to provide required cooling; no extra a/c is required in OT apart from this. HEPA plenum can be made in GI powder coat, Aluminum powder coat, SS304.

Specification of AHUs :

1.1. Type of Casing : Double Skin Polyurethane Foamed, Floor Mounted
1.2. Casing Details : Inner casing - 1.0 mm Aluminum / SS316 , Outer Skin : GI - 1.0 mm Power Coated
1.3. PUF Insulation Thickness : For outdoor Application 45mm Thick , 40 Kg/ m3 Density & for Indoor Application 25 mmThick,38 Kg/m3 Density.
1.4. Cooling Coil : 6 rows deep Copper Tube, Fins - Al. 12-13 FPI, Copper Tube Thickness shall be Minimum 0.5 mm.
1.5. Coil Casing-(Top/Side/Bottom ) : SS316
1.6. Drain Pan Material : SS 316
1.7. Drain Pan Insulation : 19mm Thick, Closed cell Nitrile Rubber,50 Kg/m3 Density.
1.8. Filter Frame where the Filter will be mounted : shall be Aluminum Heavy Gauge.
1.9. Pre-Filter & Microvee Filter Frame Material : Aluminum.
1.10. Fan : DIDW backward curved Centrifugal fan. 90 mm of water static pressure. Make : CG / Nikotra / Kruger.
1.11. Motor : Suitable for 415 + 10% volts, 50 cycle, 3 phase AC supply.
1.12. Fan & Motor Mounting : Heavy gauge Aluminum.
1.13. AHU Mouth Damper & Flange : Aluminum.
1.14. Provision will be made so that AHU cooling unit can be bypassed when required. For outdoor Application Thermal Break profile is recommended.

2. Walling & Ceiling (OT’s and Post Op.) :

Wall & Ceiling panels are of 80mm thickness and have a composite structure of one side EGP sheet and the other side powder coated GI sheet with PUF filler in-between. The panels will be made from 0.8mm EGP sheet with a PUF insulation of density 40 in between. The PUF will have a thickness of 48.6mm and GI panel of 0.6mm on the upper side. The total ceiling will have a thickness of 50mm. the ceiling will also have a PU antibacterial paint.

2.1. Facing Material:

EGP sheet will be finished with putty and a antibacterial antifungal coat to give a seamless coat.

2.2. Core Material:

A core of CFC frees rigid Poly Urethane Foam with typical physical properties:

2.2.1. Density of 40kg/m3.
2.2.2. Coefficient of conductivity < 0.025W/mK
2.2.3. Tensile Strength > 0.1N/mm2.
2.2.4. Compressive Strength > 0.1N/mm2.
2.2.5. Tensile Modulus > 3N/mm2.
2.2.6. Compression Modulus > 3N/mm2.
2.2.7. Dimensional stability at 800C and at - 200C < 2%.
2.2.8. Water Absorption < 0.55kg/m3.

2.3. Panel Properties:

2.3.1. Standard panels with reaction to fire classified as Cs2d0
2.3.2. Panels with superior reaction to fire classified as Bs2d0

3. Flooring : Conductive / Dissipative Flooring

2mm Conductive flooring with Carbon backing having weight of 3kg/m². the product will be Poly Urethane reinforced (PU-Shield), scratch resistant, fire resistant, chemical resistant, slip resistant, antifungal, antibacterial growth, with a dimensional stability of &li; 0.4%, static electrical charges &li; 2KV, impact sound reduction (approx). The floor should have an electrical resistance of 2.5 x 10 to 10 6 Ohms.

4. Doors

4.1. Powder Coated Aluminum and Hermetically Sealing

To maintain sterility and the correct air pressure inside the rooms, all OT suite entrance doors would be of the sliding, hermetically sealing type. The door will meet following specifications:

- Meets international quality and safety requirements.
- Meets international quality and safety requirements.
- Noise level of movement should not be more than 60 decibel
- Controller should be microprocessor based and be CE marked and should have digital display.
- The track should be made up of single piece extruded aluminum
- Environment temperature 10ºC to 40º C.
- Starting times should be able to regulate from 0.5 second to 23 second
- Starting speed should be 600 mm per second.
- Electrical safety codes for High & Low voltage system design should meet HTM 2020 /2021 standards.

The doorframe would be made of high quality anodized aluminum and the door panel will be made of compact laminate that can withstand high abrasion. To ensure efficient sealing of the doors, the door frames will be provided. They should consist of reinforced plasterboard panels faced with the same laminate as the doors. The door will seal on all four edges in the closed position & should be surface installed type. The track of the door will be constructed with an aluminum extrusion, fixed firmly to the walls. Nylon runner guides will be fixed to the floor in such a way that they do not obstruct trolley movement through the door. The doorframes will be edged with an aluminum extrusion and with concealed fixings that are adjustable during installation to ensure a 100% hermetic seal is achieved. Vision panels, 300mm x 300mm will be provided in the doors. The door controller will be sensing overload condition and in overload case the door will automatically stop & reverse the direction of travel. The controller will be capable of either being operated by elbow switches/foot switches, radar switch (touch less sensor). All doors will be able to be operated easily manually in the event of failure of the power supply or the automation unit.

CONTROLS AND SAFETY DEVICES.

The door shall be equipped as standard with two large size elbow-operated pushbuttons, a double pair of miniature 13 mm diameter safety sensors positioned to monitor the presence of obstacles on the threshold, back-up battery unit for emergency opening during power outages (the door stops in the open position in order to identify the presence of a fault in the electrical circuit).

4.2. Manual SS Single / Double Leaf Door (1500 x 2100 mm):

4.2.1. Type of Door : Outfitting / In fitting
4.2.2. Operation : Left/Right Hand (Pls indicate)
4.2.3. Door Frame Material : 1.2 mm (18 G) S.S. Sheet
4.2.4. Door Leaf Outer Material : 0.8 mm (22 G) S.S. Sheet
4.2.5. Door Leaf Inner Material : 0.8 mm (22 G) S.S. Sheet
4.2.6. Filler Material : PUF Insulation
4.2.7. Vision Panel (Size: 300 mm x 300), Double toughened glass
4.2.8. Door Seal : neoprene / EPDM.
4.2.9. Stainless Steel Hinge (100X75X3mm) (Make: ‘Dorset’) : 4 nos. hinges for Single door

5. Single Arm Moveable Pendant :

The Ceiling Pendant Systems designed to provide convenient positioning of medical equipment, medical gas terminal units, electrical and specialty services. The Ceiling Pendants will comply with NFPA 99, USA /HTM 2022. The support arms will be extremely robust and revolve on high quality bearings, so that the pendant head glides smoothly and quickly to any desired position.

The Pendant will have:

Single Arm (1000mm) with horizontal movement and load carrying capacity of 80 kg. The arm will be rotated up to 330 degree to 340 degree with adjustable stopper. The Pendant will have pneumatic brakes system will be adaptable to various safety requirements and construction facilities. Surgeon Pendant will have 1 arm with shelves as per points :

5.1. 5/15 Amp Electrical sockets without switches - 8 nos.,
5.2. Shelfs with side rails - 2 nos.,
5.3. Gas interface set for interface plate - 1 no.,
5.4. Ceiling mounting system for interim ceiling up to 1000
5.5. Interface plate with electrical fittings- 1no
5.6. Provision to fix 8 Gas Outlets

6. Operation Theatre Control Panel

The Surgeon Control Panel will meet Electrical Safety codes for High & Low voltage system, wired to the current IEE regulations. The room Surgeon’s Control Panel will be designed to cope with changing technology and equipment in operating environments. Control panel should be user friendly and ease of operating and maintaining purpose. The control panel will be of membrane type. The Control Panel shall be designed for front – access only. All internal wires shall be marked with plastic ferrule type cable markers, for ease of identification. The panel shall contain services as below :

6.1. Time Day Clock: Time Day Clock shall be digital type and clocks having high brightness characters.
6.2. Time Elapse Day Clock: Time Elapsed Day Clock shall be digital type and clocks having high brightness characters.
6.3. General Lighting System: General Lighting System shall incorporate all the necessary controls of the lighting system inside the theatre.
6.4. Medical Gas Alarm Panel: The medical gas alarm shall indicate High, Normal and Low gas pressure for each gas service present in the operating room and shall have an audible buzzer with mute facility. Pressure sensors shall be connected to MGPS for monitoring the pressures.
6.5. Hand Free Telephone set with memory card: A Hand Free Set Telephone system shall be incorporated in the panel with memory type card.
6.6. Temperature & Humidity Indicator: Temperature Indicator shall indicate the room temperature which should be connected to the local pressure switches of Air-Conditioning system. Indicator shall be digital type having high brightness characters, not less than 30mm in height.
6.7. OT Room Air Pressure Indicator

7. Medical Gases

Copper gas pipe line inside OT will be as per EN standard to cover Oxygen, Nitrous Oxide, Compressed air, Vacuum with accessories and CO2 Gas. The copper tube will be installed in conformity with the requirement of HTM.

Copper Piping – Technical Specifications and Testing Requirements

Copper pipes will be seamless solid drawn, half hard, tempered, phosphorus deoxidized, non-arsenical and degreased conforming to BS 2871-1971 (Part) Table X and chemical composition as per BS 6017 – 1981, Table 2, Cu-DHP of size. After laying the copper pipes the line will be tested for leaks at a pressure 1.5 times of working pressure. In case any pressure drop is observed in 24 hours, the same will be rectified and the test is repeated till there is no pressure drop for 24 hours. The pipeline will be supported at regular intervals with PVC saddles and painted with 2 coats of enamel paint as per International color codes.

8. Pressure Relief Dampers

Pressure Relief Dampers will be provided in each OT to prevent cross contamination of air from clean and dirty areas. Suitably sized air pressure relief damper will be strategically placed, enabling differential room pressure to be maintained and ensure that when doors are opened between clean and dirty area. Counter-weight balancing system will be provided in the PRD to maintain positive pressure inside the operation room. Air pressure stabilizers will have unique capability of controlling differential pressure to close tolerance. The PRD will remain closed at pressure below the set pressure and should open fully at pressure only fractionally above the threshold pressure. The body will be epoxy powder coated as per standard BS colors. First class electrolyzed steel plate will be used for body and with high grade SS304 Stainless Steel for blades.

9. Fusible link Type Fire Dampers (if applicable) :

9.1. All supply and return air ducts at AHU room crossings and at all floor crossings shall be provided with approved make fire dampers of at least 90 minutes fire rating.
9.2. Fire damper blades and outer frame shall be formed of 1.6 MM galvanised sheet steel. The damper blade shall be pivoted on both ends using chrome plated spindles in self lubricated bronze bushes. Stop seals will be provided on top and bottom of the damper housing made of 16 G galvanised sheet steel. For preventing smoke leakage side seals will be provided. In normal position damper blade shall be held in open position with the help of a spring held in position by fusible links of approved rating thereby providing maximum air passage without creating any noise of chatter.
9.3. The fire damper shall close due to temp rise in SA. Ducts thru the fusible links factory set at 165 Deg. F. micro switches with bakelite base will be provided to stop fan motor and give open and close signal at remote panel in case of fire.
9.4. The fire dampers shall be mounted in fire rated wall with s duct sleeve 600 MM long. The sleeve shall be factory fitted on fire damper. The joints at sleeve end shall be slip on type. Minimum thickness of GI sheets shall be 18G.

10. Supply/ Return Air Diffusers

10.1. Diffusers shall be of approved make and of aluminum construction, round in shape with flush fixed pattern or adjustable flow pattern. Diffusers for different spaces shall be selected in consultation with the Consultant. All supply air diffusers shall be equipped with removable key operated volume control dampers. Anti - smudge ring will be required in specific applications. All extruded aluminum diffusers shall be provided with removable central core and concealed key for operating the volume control damper. The main extruded section shall be minimum 15 mm wide.
10.2. Linear diffusers shall be extruded aluminum construction one or two way blow type. The supply air diffusers shall be provided with volume control dampers to be fitted within the supply air collar.
10.3. Slot diffusers shall be extruded aluminum construction multi slot type complete with Hit and Miss volume control damper.

11. Supply/ return air grills :

Grills shall be of extruded aluminum construction having concealed screws for fixing. These shall be duly powder coated in the shade approved by TMH/ TSL. The grills shall have horizontal bars at 15/30 deg. inclination and flanges on top and bottom. The grills at the end shall have flange on the side as well as per the site requirement. The size of main extruded section for flanges shall be minimum 15 x 15 mm and the louvers shall be 15 mm deep having thickness of mm in the front and 2.8 mm at the rear.

12. Aluminium Ducting with Nitrile Insulation

Ducting shall be made of Aluminum for supply & for return with curves and bends where indicated for easy flow of air and ensured to be air tight by applying Silicon sealant after fabrication .hanger shall be provided to ducts & shall be suspended by means of GI coated rods & these shall not be more than 2.5mtrs apart .Thermal Insulation with 12mm XPE with aluminum foil for supply & return air ducts. Joints should be lapped with Nitrile rubber tape for better insulation.

13. Plenum with Mini Pleat / Conventional HEPA Filters :

The Caracas of the plenum will be made of extruded aluminum sections in such a manner that the air is passed only through the filters only. Plenum unit for laminar flow diffuser will be made of thick aluminum sheet. The complete unit will have factory prepared fine sealing system. The plenum will be supplied at site duly sealed in factory made packing. The Laminar flow system will have anodized aluminum perforated diffuser grill. The laminar flow system will have such design that it provides cleanliness of class 1000.

All filters are having genuine fiber Glass media manufactured in Europe or USA (either by Lydall Corporation or Hollingsworth & Vose), not the cheapest one manufactured in China. So, the life and efficiency of the filters are nearly double in comparison to available so called filters in Indian market whose country of origin in China.

ISO Classification Number	US FED 209E	BS 5295	cGMP (operational)
ISO 1
ISO 2
ISO 3	M1.5 (1)	'C'
ISO 4	M2.5 (10)	'D'
ISO 5	M3.5 (100)	'E' or 'F'	A (B*)
ISO 6	M4.5 (1,000)	'G' or 'H'
ISO 7	M5.5 (10,000)	'J'	B (C*)
ISO 8	M6.5 (100,000)	'K'	C D
ISO 9
* at rest conditions

ISO Classification Number	Maximum concentration limits (particles/m³ of air) for particles equal to and larger than the considered sizes shown below
	0.1 µm	0.2 µm	0.3 µm	0.5 µm	1 µm	5 µm
ISO 1	10	2
ISO 2	100	24	10	4
ISO 3	1,000	237	102	35	8
ISO 4	10,000	2,370	1,020	352	83
ISO 5	100,000	23,700	10,020	3,520	832	29
ISO 6	1,000,000	237,000	102,000	35,200	8,320	293
ISO 7				352,000	83,200	2,930
ISO 8				3,520,000	832,000	29,300
ISO 9				35,200,000	8,320,000	293,000

Class 3.5 : Laminar flow clean rooms Acute surgery areas Transplants Open heart Insertion of orthopaedic prosthesis Neuro-surgery Plastic surgery	Class 350 : Laminar flow clean rooms Major surgery and intensive care, Cytotoxic drug suites
Class 3500 : Non laminar flow clean room Minor surgery	Class 7000 : Clean room Pharmaceutical and therapeutic goods

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