API 2517D : 1ED 93

DOCUMENTATION FILE FOR API 2517 - EVAPORATION LOSS FROM EXTERNAL FLOATING-ROOF TANKS

American Petroleum Institute

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List of Tables
List of Figures
Nomenclature
1.0 Introduction
2.0 Roof-Fitting Loss Factors
2.1 Measurement of Roof-Fitting Losses
2.2 Roof Fittings Tested
2.3 Analysis of Roof-Fitting Loss Data
2.4 Development of Roof-Fitting Loss Factors Kfa, Kfb
      and m
2.5 Total Roof-Fitting Loss Factor, Ff for Typical
      Pontoon and Double-Deck Floating Roofs
3.0 Typical Number of Roof Fittings
3.1 Typical Number of Roof Legs
3.2 Typical Number of Vacuum Breakers
3.3 Typical Number of Roof Drains
4.0 References
Tables
Figures
List of Tables
1. Summary of Test Numbers and Test Conditions
2. Summary of Test Results for the 8-inch Diameter
     Slotted Gage Pole and Well
3. Summary of Test Results for the 15-inch Diameter
     Covered Well
4. Summary of Test Results for the 6-inch Diameter Open
     Drain
5. Summary of Test Results for the Roof Legs
6. Roof-Fitting Loss Factors for Access Hatches, Gauge-
     Float Wells, Gauge-Hatch/Sample Wells, Vacuum
     Breakers and Rim Vents
7. Roof-Fitting Loss Factors for Roof Drains
8. Roof-Fitting Loss Factors for Slotted Guide-Pole/
     Sample Wells and Unslotted Guide-Pole Wells
9. Roof-Fitting Loss Factors for Roof Legs
10. Roof-Fitting Loss Factors, Kfa, Kfb and m
11. Number of Roof-Fittings for Typical Pontoon Floating
     Roofs
12. Number of Roof-Fittings for Typical Double-Deck
     Floating Roofs
13. Total Roof-Fitting Loss Factor, Ff, for Typical
     Pontoon Floating Roofs
14. Total Roof-Fitting Loss Factor, Ff, for Typical
     Double-Deck Floating Roofs
15. Total Roof-Fitting Loss Factor Coefficients for
     Typical Pontoon Floating Roofs
16. Total Roof-Fitting Loss Factor Coefficients for
     Typical Double-Deck Floating Roofs
17. Number of Roof Legs for Tank Manufacturer Number 1
18. Number of Roof Legs for Tank Manufacturer Number 2
19. Number of Roof Legs for Tank Manufacturer Number 3
20. Average Number of Roof Legs for Tank Manufacturer
     Numbers 1, 2 and 3
21. Typical Number of Roof Legs
22. Number and Diameter of Vacuum Breakers for Tank
     Manufacturer Number 1
23. Number and Diameter of Vacuum Breakers for Tank
     Manufacturer Number 2
24. Average Number and Diameter of Vacuum Breakers for
     Tank Manufacturer Numbers 1 and 2
25. Typical Number of Vacuum Breakers
26. Number and Diameter of Roof Drains for Double-Deck
     Roofs for Tank Manufacturer Numbers 1 and 2
27. Typical Number of Roof Drains for Double-Deck Roofs
List of Figures
1. Wind Tunnel Test Facility
2. Roof-Fitting Loss Factor for a Covered Well
     (15-inch diameter well)
3. Roof-Fitting Loss Factor for a Roof Drain
     (6-inch diameter), Open
4. Roof-Fitting Loss Factor for a Roof Drain
     (6-inch diameter), 90% Closed
5. Roof-fitting Loss Factor for a Slotted Guide-Pole/
     Sample Well (8-inch diameter slotted pole, 21-inch
     diameter well), Gasketed Sliding Cover, With Float
6. Roof-Fitting Loss Factor for a Slotted Guide-Pole/
     Sample Well (8-inch diameter slotted pole, 21-inch
     diameter well), Ungasketed Sliding Cover, with Float
7. Roof-Fitting Loss Factor for a Slotted Guide-Pole/
     Sample Well (8-inch diameter slotted pole, 21-inch
     diameter well), Ungasketed Sliding Cover, Without
     Float
8. Roof-Fitting Loss Factor for a Roof Leg (3-inch
     diameter), Adjustable, Pontoon Area
9. Roof-Fitting Loss Factor for a Roof Leg (3-inch
     diameter), Adjustable, Center Area and Double-Deck
     Roofs
10. Roof-Fitting Loss Factor for a Roof Leg (2.5 inch
     diameter), Adjustable, Pontoon Area
11. Total Roof-Fitting Loss Factor for Typical Fittings
     on a Pontoon Floating Roof
12. Total Roof-Fitting Loss Factor for Typical Fittings
     on a Double-Deck Floating Roof
13. Number of Pontoon Roof Legs for a Pontoon Floating
     Roof
14. Number of Center Area Roof Legs for a Pontoon
     Floating Roof
15. Total Number of Roof Legs for a Pontoon Floating
     Roof
16. Total Number of Roof Legs for a Double-Deck Floating
     Roof
17. Number of Vacuum Breakers for a Pontoon Floating
     Roof
18. Number of Vacuum Breakers for a Double-Deck Floating
     Roof
19. Number of Roof Drains for a Double-Deck Floating
     Roof