BS 5724-2.27(1989) : 1989

National foreword
Committees responsible
Specification
Section one - General
1. Scope
2. Normative references
3. Definitions
4. General requirements and general requirements
     for tests
5. Classification
6. Identification, marking and documents
7. Power input
Section two: Safety requirements
8. Basic safety categories
9. Removable protective means
10. Special environmental conditions
11. Special measures with respect to safety
12. Single fault condition
Section three: Protection against electric shock hazards
13. General
14. Requirements related to classification
15. Limitation of voltage and/or current
16. Enclosures and protective covers
17. Insulation and protective impedances
18. Earthing and potential equalization
19. Continuous leakage currents and patient auxiliary
     currents
20. Dielectric strength
Section four: Protection against mechanical hazards
21. Mechanical strength
22. Moving parts
23. Surfaces, corners and edges
24. Stability and transportability
25. Expelled parts
26. Vibration and noise
27. Pneumatic and hydraulic power
28. Suspended masses
Section five: Protection against hazards from unwanted
or excessive radiation
29. X-radiation
30. Beta, gamma, neutron radiation and other
     particle radiation
31. Microwave radiation
32. Light radiation (including visual radiation and
     lasers)
33. Infra-red radiation
34. Ultra-violet radiation
35. Acoustical energy (including ultrasonics)
36. Electromagnetic compatibility
Section six: Protection against the hazards of explosions
in medically used rooms
37. General
38. Classification, marking and accompanying documents
     of anaesthetic-proof equipment
39. Common requirements for "AP" and "APG" equipment
40. Requirements and tests for anaesthetic-proof
     equipment, equipment parts or components (AP)
41. Requirements and tests for anaesthetic-proof
     category G equipment, equipment parts or components
Section seven: Protection against excessive temperatures,
fire and other hazards, such as human errors
42. Excessive temperatures
43. Fire prevention
44. Overflow, spillage, leakage, humidity, ingress of
     liquids, cleaning, sterilization and disinfection
45. Pressure vessels and parts subject to pressure
46. Human errors
47. Electrostatic charges
48. Materials in applied parts in contact with the body
     of the patient
49. Interruption of the power supply
Section eight: Accuracy of operating data and protection
against incorrect output
50. Accuracy of operating data
51. Protection against incorrect output
Section nine: Fault conditions causing overheating and/
or mechanical damage; environmental tests
52. Fault conditions causing overheating and/or
     mechanical damage
53. Environmental tests
Section ten: Constructional requirements
54. General
55. Enclosures and covers
56. Components and general assembly
57. Mains parts, components and layout
58. Protective earth terminals
59. Construction and layout
Section eleven: Additional requirements
60. Interfering gas and vapour effects
61. Environmental temperature limitations
62. Cyclic pressure
63. Gas leakage and sampling loss
64. Replacement of oxygen sensor
65. Auditory signal frequency
66. Connections
Annexes
N. Rationale
P. Bibliography
Tables
1. Vapour pressure over water
2. Inhalation anaesthetics and other interfering
     gases and vapours
Figure
1. Half-sine shock pulse configuration and its
     tolerance limits

Sets out safety requirements for oxygen analyzers, used in determining the oxygen level in breathing gas mixtures administered to patients. Both sampling and non-sampling oxygen analyzers are covered. Covers anaesthetic machines and breathing systems, ventilators, baby incubators, and oxygen concentrators (domiciliary or clinical). Excludes oxygen analyzers used in laboratory research applications. Has sections on protection against electric shock, mechanical hazards, excess radiation, explosions in medically used rooms, excess temperatures, fire etc., accuracy of operating data and protection against incorrect output, fault conditions, constructional and additional requirements.