aar –knowledge sharing
TRANSCRIPT
11/8/21
1
13 Nov 2021AAR Ahmedabad 1 13 Nov 2021 2
} Preamble : Why standard ? – Need and importance
} What it contain
} Use of standard for plant design
AAR Ahmedabad
13 Nov 2021 3AAR Ahmedabad
AAR – Knowledge Sharing
www.ammoniaindia.org
All AAR technical training program presentations are uploaded on AARwebsite.
Quarterly Newsletter Resource Books
13 Nov 2021AAR Ahmedabad 4
AAR – Upcoming Publications
AAR Poster for Plant Safety & Operation
13 Nov 2021AAR Ahmedabad 5
AAR: Flyer to promote Ammonia Refrigerant
13 Nov 2021AAR Ahmedabad 6
11/8/21
2
AAR: Flyer to promote Ammonia Refrigerant
13 Nov 2021AAR Ahmedabad 7 13 Nov 2021AAR Ahmedabad 8
} No appropriate consolidated standard available for system} Will to follow standard , safety} Mind set for Human and plant safety} Looking only for initial capital cost } Not worried about operating cost for 15 years of life of plant} Not willing to allocate fund for proper maintenance of plant} Getting trained operators} Heavy lobby of other refrigerant mfg
13 Nov 2021
• AAR Standard is one standard for all requirement of Ammonia
based refrigeration plant
• No Need for cross reference to other standard
• Suitable for All type of Ammonia Refrigeration plants such as
o Dairy
o Ice manufacturing
o Ice Cream
o Beverages
o Breweries
o Food Processing Vegetable, meat, poultry & fish
o Food Storage ( +ve and –ve temperature)
o Cold Chain
o Process chilling
o Process cooling
o Pharma , Bulk drug, dyes, pigment, chemical etc.
AAR Ahmedabad 9
} Decision taken by AAR Board to prepare “Industrial Refrigeration Standard for Indian Conditions” – Jun. 2013
} Standard Committee was formed – Aug. 2013
} First Draft submitted by committee to AAR BOD – Jan. 2015
} Revised draft approved by BOD – Jun. 2015
} Draft uploaded on AAR website for public review for 180 days – Jul. 2015
} New draft after feedback from various members in India and abroad was presented to AAR BOD – Apr. 2016
} AAR BOD approved final draft for printing – Aug. 2016
} Standard formally launched in ICE Exhibition – Dec. 2016
13 Nov 2021AAR Ahmedabad 10
13 Nov 2021AAR Ahmedabad 11
1. ANSI -Standard for safe design of closed-circuit ammonia refrigeration systems2. ANSIASHRAE Standard15-2013-Safety Standard for Refrigeration systems3. ISO 51249-1,2,3 4 Standard4.EN 378-2008 for design and construction of refrigeration systems5. ANSI B31.5 for refrigeration piping systems6.IS 4544-2000 Ammonia code of safety7. IS 660 -1963 reaffirmed 2007-Safety code for mechanical refrigeration systems8. IS 661-2000-Thermal Insulation of cold storage-Code of Practice-20009. IS 662:1980 Specifications for Anhydrous Ammonia10. 817:2005 Refrigerants Designation system
13 Nov 2021AAR Ahmedabad 12
11/8/21
3
11. IS4544:200 Ammonia Code of Safety12. IS3594-1991 reaffirmed 2005-Fire safety –cold storages13. IS7252-1974, Guide for testing Physical conditions in cold storage14. IS3615-2007-Glossary of Terms used in Refrigeration & Air conditioning15. IS11132-1985-Specifications of Ammonia valves16. IS2825 –code for unfired pressure vessels17. IS 4503-1983-07-Specifications for Shell & Tube heat exchangers18. National Building code of India
Relevant standard references
13 Nov 2021AAR Ahmedabad 13
AAR – Launch of AAR-1 Standard
13 Nov 2021AAR Ahmedabad 14
13 Nov 2021 15
What Standard contain
AAR Ahmedabad
Contain
Section No. Chapter Number and contain
1 1.Scope2 Definitions3 Reference standard
2 Design & Installation Consideration Affecting Construction4. Location of ammonia machinery room5.System Design6.Machinary Room7 Areas other than machinery room
13 Nov 2021AAR Ahmedabad 16
Section No.
Chapter Number and contain
3 Equipment & Components8. Compressors9. Refrigerant Pumps10. Condensers11. Evaporators12. Pressure Vessels13. Piping14 Package Systems & Components15 Over pressure protection devices16. Instruments and controls17. Ammonia Detection and Alarms
13 Nov 2021AAR Ahmedabad 17
Contain
Section No.
Chapter Number and contain
4 AppendicesA. Normative, Allowable Equivalent Length of
discharge pipingB. Informative, Method of calculating Relief ValveC.Informative, Duplicate name plateD. Informative Stress Corrosion cracking
13 Nov 2021AAR Ahmedabad 18
Contain
11/8/21
4
Section No.
Chapter Number and contain
4 Appendicese. Informative Emergency Pressure Control systemF Informative, Machine Room Signs. Informative, G Informative Alternative ventilation calculationH Informative, Pipe fittings, Flanges & BoltingI. Informative , first aid if Ammonia leak
13 Nov 2021AAR Ahmedabad 19
Contain
13 Nov 2021 20
Applying AAR standard to refrigeration system design
AAR Ahmedabad
13 Nov 2021 21
} I am going to install new refrigeration plant OR I have maintain existing plant.
} Can I use AAR standard to make plant -------
} sustainable,} Easy to operate} Safe} Energy efficient
Yes we can
Applying AAR standard
AAR Ahmedabad 2213 Nov 2021AAR Ahmedabad
2313 Nov 2021AAR Ahmedabad 2413 Nov 2021AAR Ahmedabad
11/8/21
5
2513 Nov 2021AAR Ahmedabad
} Piping : Material selection } Max allowable hanger rod spacing is
specified in AAR standard
13 Nov 2021AAR Ahmedabad 26
} fittings and flanges : Material selection :
13 Nov 2021AAR Ahmedabad 27
} Ammonia pumps
13 Nov 2021AAR Ahmedabad 28
} Plant safety is specified in AAR standard
13 Nov 2021AAR Ahmedabad 29 3013 Nov 2021AAR Ahmedabad
11/8/21
6
31
} Ammonia suit
13 Nov 2021AAR Ahmedabad
} Instruments and controls
13 Nov 2021AAR Ahmedabad 32
} Safety valve selection
13 Nov 2021AAR Ahmedabad 33
} Ammonia leak detections
13 Nov 2021AAR Ahmedabad 34
13 Nov 2021AAR Ahmedabad 35 3613 Nov 2021AAR Ahmedabad