PROVINCE OF KWAZULU-NATAL DEPARTMENT …

1 specification MG. JULY 2001. PROVINCE OF KWAZULU-NATAL . DEPARTMENT OF health . STANDARD specification AND DRAWINGS. FOR. MEDICAL GAS AND VACUUM SERVICES. Office of the Secretary for health Private Bag X9051. PIETERMARITZBURG. 3201. Page 1 of 55. specification MG. JULY 2001. INDEX. PAGE No. 1. INTRODUCTION 5. General 5. Project specification 5. Queries 5. Competence of Installation Technicians 5. Permit to Work 5. Standard Drawings 6. Other Standards and Publications 6. 2. PROCEDURE FOR VALIDATION AND VERIFICATION OF. MEDICAL GAS PIPELINE SYSTEMS 8. General 8. Test on the Pipeline Carcass 9. Labelling and Marking 9. Sleeving and Supports 9. Leakage 9. Cross Connection 10. Test on the Pipeline System 10. Leakage from Compressed Medical Gas System 10. Leakage into Vacuum System 11. Closure and Zoning of Area Valve Service Units 11.

2 Cross Connection 12. Functional Tests of Terminal Units 12. Performance Tests of the Pipeline System 13. Supply System Tests 13. Safety Valve Inspection 13. Warning System Tests 14. Verification of Drawings 14. Filling with Medical Air 14. Purging and Filling with Specific Gas 15. Tests for Gas Identity 15. System Taken into Use 16. 3. MEDICAL GAS PIPING INSTALLATION 17. Quality of Medical Gas Piping 17. Medical Gas Tubing 17. Compliance with SABS Specifications 17. Physical Properties 17. Freedom from Defects 17. Bore Cleanliness 17. Identification and Packing 18. Valves and Fittings 18. Valves 18. Fittings 18. Pipe Joints 19. Pipe Sizing and Routing 19. General 19. Pipe Sizing 19. Pipe Routes 19. Wall Outlet Points 20. Page 2 of 55. specification MG. JULY 2001. INDEX. PAGE No. Pipe Supports 20. Protection of Piping 20.

3 Brackets 20. 4. CYLINDER GAS BANK MANIFOLDS AND PLANT 21. General 21. Manifold Materials 21. Manifold Equipment 21. Cleaning 22. Operating Instructions 22. Accommodation 23. Safety and Relief Valve Settings 23. 5. MEDICAL GAS WARNING SYSTEM 24. General 24. Power Supply for Indicating Lights 24. 6. MEDICAL GAS OUTLETS 25. Indexing 25. Grouping 25. Cover Plates 25. Labelling 26. 7. ISOLATING VALVES 27. General 27. Positioning of Isolating Valves 27. Isolating Valve Boxes 27. General 27. Valve Boxes - Paint Finish 27. Valve Boxes Markings 28. 8. MEDICAL COMPRESSED AIR 29. Required Pressures 29. Piping System 29. Medical Air Compressor 29. Compressed Air Receivers 29. Pressure Reducing Valves 30. Drives 30. Bases 30. Emergency Cylinder Bank 30. Stand-by Facility 30. Medical Air Purity 30. Noise Level 9. VACUUM SYSTEMS 31.

4 General 31. Operating Range 31. Installation 31. Pipe Connections to Vacuum Receiver and Distribution Network 31. Vacuum Plant 31. Page 3 of 55. specification MG. JULY 2001. INDEX. PAGE No. Vacuum Tank 31. Vacuum Bottle Traps 31. 10. SCAVENGING SYSTEMS 32. General 32. Scavenging System Layout 32. 11. BOOM ARMS AND PENDANTS 33. General 33. Installation 33. Pipe and Electrical Connections 33. 12. COLOUR CODING 34. Appendix A 35. Form B0 36. Form B1 37. Form B2 38. Form B3 39. Form B4 40. Form B5 41. Form B6 42. Form B7a 43. Form B7b 44. Form B8 45. Form B9 46. Form B10 47. Form B11 48. Form B12 49. Form B13 50. Form B14 51. Form B15 52. Appendix B 53. Appendix C 54. Standard Drawings THIS specification CONSISTS OF PAGES. AND STANDARD DRAWINGS. THE CONTRACTOR/TENDERER MUST CHECK. THE specification FOR ANY MISSING, DUPLICATED OR INDISTINCT PAGES.

5 AS NO CLAIMS WILL BE ENTERTAINED AFTERWARDS DUE TO WANT OF KNOWLEDGE OF. THE CONTENTS OF THIS specification OR STANDARD DRAWINGS. Page 4 of 55. specification MG. JULY 2001. STANDARD specification . FOR. MEDICAL GAS AND VACUUM INSTALLATIONS. 1. INTRODUCTION. General This specification contains standard technical requirements for medical gas and vacuum installations and anesthetic mask scavenging systems. Project specification This standard specification and drawings will at times have to be read in conjunction with project specification and drawings in which the specific requirements, scope and layout of the installation are set out. Where contradictions arise between such project specifications and drawings and this standard specification and standard drawings, the project drawings and project specification will take precedence.

6 Queries Where queries or disputes in interpretation of this specification and standard drawings vis- -vis project specifications and drawings arise, the matter must be referred to the Secretary for health or his duly appointed representative, whose decision will be final and binding. Competence of Installation Technicians It is a requirement that all pipe fitters employed in medical gas and vacuum installations are able to show proof of knowledge of, and experience in such installations before commencing work on a medical gas and vacuum system. Permit to Work Prior to any person working on or isolating any medical gas system, a Permit to Work, as described below, and as per form B15, will be required. General The Permit to Work system is applicable to the servicing, repair, alteration and extension of existing installations within a Hospital, or any action, such as the closure of an isolating valve, which restricts the supply.

7 This means that Permits shall also be obtained before any major item of central plant, manifold, control panel, compressor, or vacuum pump (including and standby plant), is isolated prior to servicing, repair or overhaul. The system is applicable to work on installations already in service. Routine Changing of Cylinders Permits are not necessary for the routine replacement of cylinders on manifolds nor for the recharging of liquid oxygen vessels, provided there is no danger of the supply being disrupted when these tasks are undertaken. Page 5 of 55. specification MG. JULY 2001. Planned Preventive Maintenance (PPM) Work Permits will not be required for routine daily or weekly inspections (where the service is not interrupted), but follow-up work will usually involve the issue of a Permit. Substantial Alterations, Extensions to, or Overhaul of Existing Installations Work described on the Permit should normally be completed in one day, though provision is made for some carryover.

8 Work likely to take more than one day may be initiated on the Permit, but should be carried out under normal procedures for engineering work of this nature and commissioned in accordance with the requirements of part 2 of this specification . Capital Works Capital works undertaken by the PROVINCE 's Works DEPARTMENT and other similar new work should be connected to an existing system only after a break point has been established. The new capital work should be tested and commissioned in the normal manner as provided for in part 2 of this specification . Standard Drawings The standard drawings listed here form part of this specification and must be read in conjunction with it: - M040101 Key to Symbols M040102 Typical Operating Theatre Layout M040103 Typical Layout of Medical Gas and Vacuum Outlet Points at Bed Head M040104 Vacuum Pipe Take-off Details M040201 Diagrammatic Layout Medical Compressed Air Piping and Equipment M040202 Typical Oxygen and Gas Bank Layout M040203 Diagrammatic Layout of Vacuum Plant Pipe Work and Equipment M040204 Typical Nitrous Oxide Gas Bank Arrangement M040301 Medical Gas and Vacuum Isolating Valve Cabinet M040302 Theatre Pendant Details M040303 High Pressure Compressed Air Outlets M040305 Anesthetic Scavenging System for Operating Theatres M040401 Concrete Base for Air Compressors and Vacuum Pumps M040403 Gas Evaporator Enclosure Details M040404 Details of Gas Cylinder Connections M040501 Wiring Diagram for Vacuum and Compressed Air Plants M040502 Typical

9 Wiring Diagram for Medical Gas and Vacuum Warning Light Panels M040503 Typical Warning Light Panel Layout M040504 Alternate Compressor and Vacuum Plant Wiring Detail M040505 Wiring Diagram for Anesthetic Mask Exhaust Fan Other Standards and Publications The following publications must be read in conjunction with this specification : - Occupation health and Safety Act (Act No. 85 of 1994) As amended. Standard specification for Electrical Installations Pertaining to Mechanical Equipment. SABS 099 1974 The construction of air receivers. SABS 460 1975 Copper and copper alloy tubing. Page 6 of 55. specification MG. JULY 2001. SABS 763 1977 Hot-dip (galvanised) zinc coatings. SABS 948 1978 Three phase induction motors part 1 low voltage standard motors. SABS 1091 1975 National colour standard for paint. SABS 1189 1978 Single phase induction motors.

10 SABS 1062 1985 Vacuum and pressure gauges. SABS 1409 1986 Outlet sockets and probes for medical services used in hospitals. SABS 0224 Non flammable medical gas pipeline systems. SABS 0142 Wiring of Premises CKS 64 1967 Compressed Air for breathing. CKS 332 1977 Industrial V-belts. CKS 605 1987 Medical gas regulators. R158 Regulation Hospital norms. Page 7 of 55. specification MG. JULY 2001. 2. PROCEDURE FOR VALIDATION AND VERIFICATION OF. MEDICAL GAS PIPELINE SYSTEMS. GENERAL. The following tests, as applicable, are required for any additional/modifications to piping. Tests are not required after servicing of or repairs to outlet points. Important Notes - The system being tested may not be commissioned until all tests as specified have been satisfactorily completed. The pre commissioning tests ( N 's 1 20) are to be executed/witnessed by: - a) the contractors authorised representative b) the responsible competent person c) the project manager (if applicable).