1) Electricity Supply:
(a) Mains Supply:
(I) Single Stage supply; 220 — 240V, 50Hz
(ii) Three Stage supply; 380 — 415V, 50Hz
(iii) The power supply outlet (sockets) for single phase distribution system at the hospital is three hooks and conforms to BS1363.
(b) Fluctuation:
(I) Mains fluctuation is a frequent problem, the performance should be affected by this problem a tolerance of ±15% or more in both the nominal voltage ought to be allowed.
(ii) Mains Cut-off (black out) is a frequent problem. Where necessary, Uninterrupted Power Supply (UPS) Unit ought to be included to prevent damage of equipment as a result of sudden disruption in power supply.
(iv) Suppliers should therefore verify to ensure that their power distribution units will not be affected by the above conditions.
2) Water Supply
a) Quality: the mains supply is hard water. The supplier should check/modify their gear with filters or descalers where necessary.
B) Pressure: this is variable and correlated with frequent cut off. Where necessary, the supplier should include pumps or boosters to overcome this problem.
C) Where necessary, suppliers should include water distillers
2-83 Section VI. Environmental temperature can be such that poor rubber and plastic materials can quickly melt or deformed. Bidders must ensure all materials are going to have the ability to withstand such temperatures
4) Humidity: humidity is generally high about 65 — 90%. Electronic components must be protected to prevent the effect of condensation.
5) Dust: this is an important problem especially during the dry season. Dust get into gear and clogs up filters. Additional protection must be provided where necessary and where applicable spare filters supplied to last not less than five years continuous use.
6) Vermin: these are also available and occasionally enter into gear to chew cables and urinate on boards to cause short circuit. This can be prevented by offering vermin guard where necessary to prevent entry of such destructive animals.
7) The proposed equipment must conform to the current applicable international standard such as ISO; CE; IEC, ANSI and/or BS
8) Language:
a) All labels and markings on the equipment must be in English language. B) All software programmes in the proposed equipment must be in English
language
c) All manuals have to be in English language.
9) Each of the equipment supplied must be provided with user and technical manuals. Instructions on their usage, storage and service must be clearly indicated in the manuals and where necessary, on the gear.
10)Where applicable the following shall apply:
a) Electrical Safety
I) The device should be given a line (electricity ) cord of acceptable durability, quality, length, and ampacity and must be secured with sufficient strain reliefs.
Ii) The device should include, or the bidder or supplier should offer, power plugs that are sufficient for the maximum voltage and current of the device.
Iii) The chassis should be grounded and grounding resistance shouldn’t exceed 0.15 ohm.
Iv) When the unit is double insulated, it ought to be so labeled.
V) Electrical leakage current from the chassis of the unit shouldn’t exceed
500µA per IEC 601-1 b) Effects of Fluids
Section VI. Prerequisites 2-84
I) Patient and operator security and system performance shouldn’t be negatively influenced by fluid spills.
Ii) If the device is changed, it ought to fail safely.
c) Overcurrent Protection
I) reduction of power to other equipment on the same branch circuit due to internal gear faults should be prevented by using fuses or circuit breakers that are clearly labeled and easy to replace or reset.
Ii) If fuses are used, a spare fuse ought to be provided in a labeled holder situated next to the main fuse holder. Permanent markings near each fuse holder must indicate fuse ratings.
e) Electromagnetic Interference (EMI)
I) The device ’s functionality shouldn’t be affected by EMI radiated or conducted via the power lines from another device.
Ii) If the device is changed, it ought to fail safely.
f) Alerts I) The device should have visual or audible alarms to warn operators of any system fault that might lead to unsafe or incorrect results.
Ii) Audible and/or visual signs should activate when the display reading reaches and stays at the alert limit.
Iii) All alarms must be fully explained in the operator’s guide.
g) Audible Alerts I) Audible alarms should be distinct and easily identified.
Ii) Audible alarms should be enabled when the device is turned on (i.e., the default volume shouldn’t be set to OFF) and should be clearly audible at any volume setting.
Iii) When the alarm volume is adjustable, it shouldn’t be possible to turn the volume down so low that it is unlikely to be heard.
Iv) Though an audible-alarm silence is acceptable, the alert must recur automatically if the condition is not corrected.
V) When an alarm is silenced, a visual display should clearly indicate which alarm is disabled.
h) Visual Alerts I) Visual alerts should be simple to identify. Prerequisites
ii) The alarm must be specific to the problem and stay on until the alarm condition is corrected; it shouldn’t be possible to turn off the visual alert.
I) Construction Quality
I) The device should have no sharp edges.
Ii) All external elements should be securely mounted.
Iii) The device should be secure and offer adequate protection against moving and electrically energized parts.
Iv) The device should be well constructed with durable materials to withstand typical abuse and cleaning.
V) Switches, knobs, and other controls should be designed for conditions of heavy use.
Vi) Wiring and tubing should be neatly organized and bundled, if appropriate. Vii) Mechanical, electrical, and pneumatic terminators, connectors, sockets, and
solder joints should be designed to prevent fluid penetration, incorrect connections, and mismating of fitting and couplings.
Viii)Connections should be secure to resist accidental disconnection and should maintain sterility, when appropriate.
j) Controls
i) The controls (i.e., switches, knobs, etc.) should be visible and clearly identified, and their functions should be self-evident.
Ii) Device design should prevent misinterpretation of displays and control settings.
Iii) Switches and controls should be guarded against accidental setting changes (e.g., due to someone brushing from the panel).
iv) Controls should be sealed against penetration of liquids.
k) Labeling
i) Labels and markings should be clear and legible.
Ii) Labels and markings should be durable enough to withstand regular cleaning and normal wear.
l) Ease of Use and maintenance
I) The device should be simple to learn how to use, operate, and maintain.
Ii) The device should have abbreviated operating instructions included on or with the device (e.g., on a laminated card attached to the device ).
Iii) The device should be simple to clean, disinfect, and/or sterilize, as appropriate. Iv) The device should be designed for easy access to serviceable parts.
m) Special maintenance tools, spare-parts and consummables
I) Where necessary or required, the supplier must include any special tools needed for the maintenance of the proposed equipment
ii) Each equipment must be supplied with the recommended spare-parts
Section VI. Requirements 2-86
needed for preventative maintenance for five years and where necessary include stock of recommended spare-parts for corrective maintenance.
N ) Training
I) The supplier is needed to provide sufficient training on every equipment on the correct use and operation of their equipment.
Ii) Likewise, suppliers are required to give adequate manufacturer’s training on the setup and maintenance(both preventative and corrective)
o) Packaging and Storage Conditions of Equipment
I) The components and equipment should withstand humidity and temperature extremes likely to be encountered during storage and transport.
Ii) The manufacturer should recommend procedures for storage of their equipment.
m) Special maintenance tools, spare-parts and consummables
i) Where necessary or required, the supplier must include any special tools required for the maintenance of the proposed equipment
ii) Each equipment must be supplied with the recommended spare-parts
Section VI. Requirements 2-86
required for preventive maintenance for five years and where necessary include stock of recommended spare-parts for corrective maintenance.
n) Training
i) The supplier is required to provide adequate training on each equipment on the proper use and operation of the equipment.
ii) Similarly, suppliers are required to provide adequate manufacturer’s training on the installation and maintenance(both preventive and corrective)
o) Packaging and Storage Conditions of Equipment
i) The equipment and components should withstand temperature and humidity extremes likely to be encountered during storage and transport.
ii) The manufacturer should recommend procedures for storage of the equipment.
