LINE SIZING CRITERIA AS PER DIFFERENT INTERNATIONAL STANDARDS
Ajay S. Satpute Sr. Process Engineer M. Tech. (Chemical) I.I.T., Madras, INDIA Ramboll Oil & Gas, QATAR
Introduction: This article is the compilation of line sizing criteria provided in different international standards, such as API, NORSOK, TOTAL TOTAL etc. The purpose of this exercise is to have different reputed standards' guidelines at one place, so that the process engineer shall have better understanding and comparison of the decision making conditions. Table 1 and 2 are provided below as quick reference. However, it is suggested to go through Table 3 before concluding line sizing criteria.
Table 1: Input values to be provided Phase
Fluid
Suction/Discharge / Gravity
Single phase
Gas
Discharge
Table 2: Output of Table 1
Vmax
Vmin
ΔP criteria
NA
NA
18.3 m/s
ρV2 criteria
Mach no. criteria
NA
Max. Max. allo allowed wed back back pres pressur sure e
NA
NA
Referre Referred d stan standar dard d
Remarks
API 14E, 5th Edition
Velocity criteria (< 60 ft/s) should not be interpreted as an absolute criteria
NOTE: More outputs are available. Check Table 3 for highlighted results.
Table 3 Sr. No.
Phase Single 1 phase Single 2 phase Single 3 phase
ΔP
Suction/Discharg Fluid Sand e/Gravity description presence
MOC
Condition
Pipe NB
Vmax
Vmax
Vmin
criteria criteria
Mach no. allowed criteria back
Referred standard
Liquid
Discharge
NA
No/NA
NA
Pressurized service
NA
15 ft/s
4.6 m/s
NA
NA
NA
NA
API 14E, 5th Edition NA
Liquid
Discharge
NA
Ye s
NA
Pressurized service
NA
NA
NA 0.9 m/s
NA
NA
NA
NA
API 14E, 5th Edition NA
NA
NA
NA
NA
NA
API 14E, 5th Edition NA NA
NA
NA
NA
NA
NA
API 14E, 5th Edition NA NA
NA
NA
NA
NA
NA
API 14E, 5th Edition NA NA
NA
NA
NA
NA
NA
API 14E, 5th Edition NA NA
NA
NA
NA
NA
NA
API 14E, 5th Edition NA NA
NA
NA
NA
NA
NA
API 14E, 5th Edition NA NA
NA
NA
NA
NA
NA
API 14E, 5th Edition NA NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
API 14E, 5th Edition NA NA Velocity criteria (< 60 ft/s) should not be API 14E, 5th interpreted as an Edition absolute criteria
NA
NA
NA
NA
NA
3 API 14E, 5th Edition ρm is in lb/ft
NA
NA
NA
NA
API 14E, 5th Edition ρm is in lb/ft
NA
NA
NA
NA
API 14E, 5th Edition NA
Maersk Oil standard NA NA
NA
6 ft/s (typical flow velocities) 4.5 ft/s (typical flow velocities)
NA
3 ft/s (typical flow velocities)
NA
9 ft/s (typical flow velocities)
NA 0.6 m/s (typical flow velocities) 0.5 m/s (typical flow velocities) 0.3 m/s (typical flow velocities) 0.9 m/s (typical flow velocities) 1.8 m/s (typical flow velocities) 1.4 m/s (typical flow velocities) 0.9 m/s (typical flow velocities) 2.7 m/s (typical flow velocities)
60 ft/s
18.3 m/s
Reciprocating pump Liquid
Suction
NA
No/NA
NA
(≤ 250 rpm) suction
NA
NA
2 ft/s (typical flow velocities) 1.5 ft/s (typical flow velocities)
NA
1 ft/s (typical flow velocities)
NA
3 ft/s (typical flow velocities)
Single 4 phase
Liquid
Suction
NA
No/NA
NA
Reciprocating pump (251 - 330 rpm) suction
Single 5 phase
Liquid
Suction
NA
No/NA
NA
Reciprocating pump (> 330 330 rpm rpm)) suc sucti tion on
Single 6 phase
Liquid
Suction
NA
No/NA
NA
Single 7 phase
Liquid
Discharge
NA
No/NA
NA
Single 8 phase
Liquid
Discharge
NA
No/NA
NA
Single 9 phase
ρV2
Fluid
Centrifugal pump suction Reciprocating pump
(≤ 250 rpm)
NA
discharge Reciprocating pump (251 - 330 rpm) discharge Reciprocating pump (> 330 rpm) discharge
No/NA
NA
Centrifugal pump discharge
NA
No/NA
NA
Pressurized service NA
NA
No/NA
NA
Continuous service
NA
NA
No/NA
NA
Intermittent service
NA
100/√ρm, 100/√ρm, ft/s ft/s 125/√ρm, 125/√ρm, ft/s ft/s
NA
No/NA
NA
Pressurized service
NA
NA
NA
NA 3.1 m/s
Ye s
NA
Drain line
NA
9.8 ft/s
3 m/s
0.75 m/s
NA
NA
NA
NA
No/NA
CS
Pressurized service
NA
19.7 ft/s
6 m/s
NA
NA
NA
NA
NA
Liquid Discharge Liquid with large quantities of m ud Discharge Untreated sea wa water Discharge Deoxygenat ed sea water Discharge
NA Ye s Liquid with large quantities of m ud Ye s Untreated sea water No/NA
CS
Pressurized service
NA
16.4 ft/s
5 m/s
NA
NA
NA
NA
NA
CS
Pressurized service
NA
13.1 ft/s
4 m/s
NA
NA
NA
NA
NA
CS
Pressurized service
NA
9.8 ft/s
3 m/s
NA
NA
NA
NA
NA
Deoxygenate d sea water No/NA
CS
Pressurized service
NA
19.7 ft/s
6 m/s
NA
NA
NA
NA
NA
Liquid
NA
No/NA
SS/Ti
Pressurized service
NA
23 ft/s
7 m/ s
NA
NA
NA
NA
NA
Liquid Discharge Liquid with large quantities of m ud Discharge Untreated sea wa water Discharge Deoxygenat ed sea water Discharge
NA Ye s Liquid with large quantities of m ud Ye s Untreated sea water No/NA
SS/Ti
Pressurized service
NA
23 ft/s
7 m/ s
NA
NA
NA
NA
NA
SS/Ti
Pressurized service
NA
13.1 ft/s
4 m/s
NA
NA
NA
NA
NA
SS/Ti
Pressurized service
NA
23 ft/s
7 m/s
NA
NA
NA
NA
NA
Deoxygenate d sea water No/NA
SS/Ti
Pressurized service
NA
23 ft/s
7 m/ s
NA
NA
NA
NA
NA
Liquid
Discharge
NA
No/NA
C u Ni
Pressurized service
NA
9.8 ft/s
3 m/ s
1 m/ s
NA
NA
NA
NA
Liquid
Discharge
NA
Ye s
CuNi
Pressurized service
NA
NA
NA
1 m/s
N NA A
NA
NA
NA
C u Ni
Pressurized service
NA
NA
NA
1 m/s
NA
NA
NA
NA
CuNi
Pressurized service
NA
9.8 ft/s
3 m/s
1 m/s
NA
NA
NA
NA
Liquid
Discharge
NA
Single 10 phase
Liquid
Discharge
NA
Single 11 phase
Gas
Discharge
12 Tw Two phase
Gas & Liquid Di Discharge
13 Tw Two phase
Gas & Liquid Di Discharge
14 Two phase
Gas & Liquid Discharge
No/NA
NA
Remarks
NA Single 15 phase
Liquid
Gravity
NA NA
Single 16 phase Single 17 phase
Single 18 phase Single 19 phase Single 20 phase Single 21 phase Single 22 phase
Single 23 phase Single 24 phase Single 25 phase Single 26 phase Single 27 phase
Single 28 phase Single 29 phase Single 30 phase Single 31 phase Single 32 phase
Liquid
Discharge
Discharge
NA
Liquid with large quantities of m ud Discharge Untreated sea wa water Discharge Deoxygenat ed sea water Discharge
Liquid with large quantities of m ud Ye s Untreated sea water No/NA Deoxygenate d sea water No/NA
CuNi
Pressurized service
NA
9.8 ft/s
3 m/ s
1 m/s
NA
NA
NA
NA
Liquid
Discharge
NA
No/NA
GR P
Pressurized service
NA
19.7 ft/s
6 m/s
NA
NA
NA
NA
NA
Liquid
Discharge
NA
Ye s
GRP
Pressurized service
NA
19.7 ft/s
6 m/s
NA
NA
NA
NA
NA
Norsok standard P001, 5th Edition Norsok standard P001, 5th Edition
Norsok standard P001, 5th Edition Norsok standard P001, 5th Edition Norsok standard P001, 5th Edition Norsok standard P001, 5th Edition Norsok standard P001, 5th Edition
Norsok standard P001, 5th Edition Norsok standard P001, 5th Edition Norsok standard P001, 5th Edition Norsok standard P001, 5th Edition Norsok standard P001, 5th Edition
Norsok standard P001, 5th Edition Norsok standard P001, 5th Edition Norsok standard P001, 5th Edition Norsok standard P001, 5th Edition Norsok standard P001, 5th Edition
NA NA
NA NA
NA NA NA
NA NA
NA NA NA
NA NA
NA NA NA
3
Liquid with large quantities of mud Yes Untreated sea water No/NA
Single 35 phase
Liquid with large quantities of mud Discharge Untreated sea water Discharge Deoxygenat ed sea water Discharge
Single 36 phase
Sub-cooled liquid
Single 37 phase
Single 33 phase Single 34 phase
GRP
Pressurized service
NA
NA
NA
NA
NA
NA
NA
NA
GRP
Pressurized service
NA
19.7 ft/s
6 m/s
NA
NA
NA
NA
NA
Norsok standard P001, 5th Edition Norsok standard P001, 5th Edition
Deoxygenate d sea water No/NA
GRP
Pressurized service
NA
19.7 ft/s
6 m/s
NA
NA
NA
NA
NA
Norsok standard P001, 5th Edition
Suction
Sub-cooled liquid
No/NA
NA
Centrifugal pump suction
NA
NA
NA
NA
< 0.25 bar/100 m NA
NA
NA
Norsok standard P001, 5th Edition
Boiling liquid
Suction
Boiling liquid No/NA
NA
Centrifugal pump suction
NA
NA
NA
NA
< 0.05 bar/100 m NA
NA
NA
Norsok standard P001, 5th Edition
Single 38 phase
Liquid
Discharge
NA
No/NA
NA
NA
NA
NA
NA
NA
NA
Single 39 phase
Gas
Discharge
NA
No/NA
NA
NA
NA
NA
NA
NA
NA
Norsok standard P001, 5th Edition Norsok standard P-001, 5th Edition
NA
NA
NA
Norsok standard P-001, 5th Edition
ρ is in kg/m3
NA
NA
NA
Norsok standard P001, 5th Edition
NA
NA
NA
NA
Norsok standard P001, 5th Edition
NA
NA
NA
NA
Norsok standard P001, 5th Edition
P is operating pressure in bara
NA
Norsok standard P001, 5th Edition
ρmix is in kg/m3
Norsok standard P-001, 5th Edition P-001, 5th Edition
Centrifugal pump discharge Vent line for atmospheric system
< 0.9 bar/100 m NA < 0.005 bar NA
NA NA
NA Vmax depends upon fluid (if with or without sand, untreated or deoxygenated seawater) and pipe MOC Vmax depends upon fluid (if with or without sand, untreated or deoxygenated seawater) and pipe MOC Vmax depends upon fluid (if with or without sand, untreated or deoxygenated seawater) and pipe MOC
NA
175/ ρ, 175/√ρ, m/s m/s or 60 Single 40 phase
Gas
Discharge
NA
No/NA
NA
Pressurized service NA
or 60 m/s whichever is lower
m/s whichever is lower
NA
Single 41 phase
Liquid
Discharge
NA
No/NA
NA
Pressurized service (operating pressure 0 to 35 barg) NA
NA
NA
NA
Single 42 phase
Liquid
Discharge
NA
No/NA
NA
NA
NA
NA
Single 43 phase
Liquid
Discharge
NA
No/NA
NA
NA
44 Two phase Single 45 phase Single 46 phase
Gas & Liquid Discharge
Gas
Discharge
Gas
Discharge
NA
No/NA
NA
Pressurized service (operating pressure 35 to 138 barg) Pressurized service (operating pressure more than 138 barg)
NA
NA
Pressurized service
NA
NA
183/√ρmix,
183/√ρmix,
m/s
m/s
NA
NA 0.001 to 0.11 bar/100 m (recom mended pressur e drop) 0.11 to 0.27 bar/100 m (recom mended pressur e drop) < P/500 bar/100 m NA
NA
NA
< 0.6
NA
No/NA
NA
Flare line
NA
NA
NA
NA
NA
< 200000 kg/ms2
NA
No/NA
NA
Vent line
NA
NA
NA
NA
NA
NA
NA
0.07 barg
Yes
NA
Drain line
NA
NA
NA
0.8 m/s
NA
NA
NA
NA
Both conditions to be satisfied NA
NA Single 47 phase Single 48 phase Single 49 phase Single 50 phase Single 51 phase
Liquid
Liquid
Liquid
Liquid
Liquid
Gravity
Gravity
Gravity
Gravity
Gravity
NA
NA
NA
NA
NA
Yes
Yes
NA
NA
Drain line with heavy amount of sand
Drain line (oil free)
NA
Drain line (oil contaminated)
Yes
NA
Drain line (domestic sewage)
No/NA
NA
Yes
NA
NA
NA
NA
9.8 ft/s
4.9 ft/s
NA
3 m/s
1.2 m/s 0.8 m/s
NA
NA
NA
NA
NA
NA
Total standard EP-SAF-228A, Revision 02 Total standard EP-SAF-228A, Revision 02 Total standard EP-SAF-228A, Revision 02 Total standard EP-SAF-228A, Revision 02 Total standard EP-SAF-228A, Revision 02
GS-
Total standard EP-ECP-103, Revision 02 Total standard EP-ECP-103, Revision 02 Total standard EP-ECP-103, Revision 02 Total standard EP-ECP-103, Revision 02 Total standard EP-ECP-103, Revision 02 Total standard EP-ECP-103, Revision 02 Total standard EP-ECP-103, Revision 02 Total standard EP-ECP-103, Revision 02 Total standard EP-ECP-103, Revision 02 Total standard EP-ECP-103, Revision 02 Tota stan ar EP-ECP-103, Revision 02
GS-
GS-
NA
Total standard EP-ECP-103, Revision 02 Total standard EP-ECP-103, Revision 02 Total standard EP-ECP-103, Revision 02 Total standard EP-ECP-103, Revision 02 Total standard EP-ECP-103, Revision 02
NA
NA
NA
1.5 m/s
0.8 m/s
NA
NA
NA
NA
NA
NA
NA
NA
NA
4.9 ft/s
1.5 m/s
0.8 m/s
2"
2 ft/s
0.6 m/s
NA
< 0.9 bar/km
NA
< 0.9 bar/km
NA
< 0.9 bar/km
NA
< 0.9 bar/km
NA
< 3.5 bar/km
NA
< 3.5 bar/km
NA
< 3.5 bar/km
NA
< 3.5 bar/km
NA
NA
NA
NA GSNA GSNA GSNA GSNA
NA Single 52 phase Single 53 phase Single 54 phase Single 55 phase Single 56 phase Single 57 phase Single 58 phase Single 59 phase Single 60 phase Single 61 phase Single 62 phase Single 63 phase Single 64 phase Single 65 phase Single 66 phase Single 67 phase
Liquid
Liquid
Liquid
Liquid
Liquid
Liquid
Liquid
Liquid
Liquid
Liquid
Liquid
Liquid
Liquid
Liquid
Liquid
Liquid
Suction
Suction
Suction
Suction
Suction
Suction
Suction
Suction
Discharge
Discharge
Discharge
Discharge
Discharge
Discharge
Discharge
Discharge
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
No/NA
No/NA
No/NA
No/NA
No/NA
No/NA
No/NA
No/NA
No/NA
No/NA
No/NA
No/NA
No/NA
No/NA
No/NA
NA
Pump suction (liquid at bubble point or with dissolved gas) Pump suction (liquid at bubble point or with dissolved gas) Pump suction (liquid at bubble point or with dissolved gas) Pump suction (liquid at bubble point or with dissolved gas)
NA
Pump suction (nonboiling liquid)
NA
Pump suction (nonboiling liquid)
NA
Pump suction (nonboiling liquid)
NA
Pump suction (nonboiling liquid)
NA
NA
NA
NA
NA
Pump discharge (pressure > 50 barg) 8" to 18"
NA
Discharge
NA
No/NA
NA
NA
No/NA
Pump discharge (pressure < 50 barg) > 18"
NA
Liquid
Discharge
Pump discharge (pressure < 50 barg) 2"
Pump discharge (pressure > 50 barg) 3" to 6"
Single 69 phase
Liquid
> 18"
Pump discharge (pressure > 50 barg) 2"
NA
Single 71 phase
8" to 18"
NA
No/NA
No/NA
3" to 6"
NA
NA
NA
2"
Pump discharge (pressure < 50 barg) 8" to 18"
Discharge
Discharge
> 18"
Pump discharge (pressure < 50 barg) 3" to 6"
Liquid
Liquid
8" to 18"
NA
Single 68 phase
Single 70 phase
3" to 6"
NA
NA
Pump discharge (pressure > 50 barg) Pump discharge (pressure < 50 barg and Storage tank inlet or in loading) Pump discharge (pressure < 50 barg and Storage tank inlet or in loading) Pump discharge (pressure < 50 barg and Storage tank inlet or in loading) Pump discharge (pressure < 50 barg and Storage tank inlet or in loading)
> 18"
3 ft/s
3.9 ft/s
4.9 ft/s
3 ft/s
3.9 ft/s
4.9 ft/s
5.9 ft/s
14.8 ft/s
14.8 ft/s
14.8 ft/s
19.7 ft/s
14.8 ft/s
14.8 ft/s
14.8 ft/s
19.7 ft/s
0.9 m/s
1.2 m/s
1.5 m/s
0.9 m/s
1.2 m/s
1.5 m/s
1.8 m/s
4.5 m/s
4.5 m/s
4.5 m/s
6 m/s
4.5 m/s
4.5 m/s
4.5 m/s
6 m/s
NA
< 4.5 bar/km
NA
< 4.5 bar/km
NA
< 4.5 bar/km
NA
< 4.5 bar/km
NA
<9 bar/km
NA
<9 bar/km
NA
<9 bar/km
NA
<9 bar/km
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA GSNA GSNA GSNA GSNA GSNA GSNA GSNA GSNA GSNA GSNA
NA GSNA GSNA GSNA GSNA
2"
9.8 ft/s
3 m/s
NA
< 4.5 bar/km
NA
NA
NA
Total standard GSEP-ECP-103, Revision 02
3" to 6"
9.8 ft/s
3 m/s
NA
< 4.5 bar/km
NA
NA
NA
Total standard GSEP-ECP-103, Revision 02
NA
NA
Total standard GSEP-ECP-103, Revision 02
NA
NA
Total standard GSEP-ECP-103, Revision 02
NA
8" to 18"
> 18"
9.8 ft/s
9.8 ft/s
3 m/s
3 m/s
NA
NA
< 4.5 bar/km
< 4.5 bar/km
NA
NA
NA
NA
Single 72 phase
Single 73 phase
Liquid
Liquid
Discharge
Discharge
NA
NA
No/NA
No/NA
NA
NA
Single 74 phase
Liquid
Discharge
NA
No/NA
NA
Single 75 phase
Liquid
Discharge
NA
No/NA
NA
Pump discharge (pressure > 50 barg and Storage tank inlet or in loading) Pump discharge (pressure > 50 barg and Storage tank inlet or in loading) Pump discharge (pressure > 50 barg and Storage tank inlet or in loading) Pump discharge (pressure > 50 barg and Storage tank inlet or in loading)
2"
3" to 6"
9.8 ft/s
9.8 ft/s
3 m/s
3 m/s
NA
NA
<9 bar/km
<9 bar/km
NA
NA
NA
NA
NA
Total standard GSEP-ECP-103, Revision 02
NA
NA
Total standard GSEP-ECP-103, Revision 02
NA
Total standard GSEP-ECP-103, Revision 02
NA
8" to 18"
9.8 ft/s
3 m/s
NA
<9 bar/km
NA
NA
NA
> 18"
9.8 ft/s
NA
<9 bar/km
NA
NA
NA
Drain line
NA
2 ft/s normal velocity
3 m/s 0.6 m/s normal velocity
NA
< 0.45 bar/km
NA
NA
NA
NA
NA
NA
NA
NA
kg/ms2
NA
NA
NA Continuous operating (P > 120 barg) NA Dis-continuous operating compressor antisurge (P ≤ 50 barg) NA Dis-continuous operating compressor anti-
NA
NA
NA
NA
< 15000 kg/ms2
NA
NA
NA
NA
Total standard GSEP-ECP-103, Revision 02 Total standard GSEP-ECP-103, Revision 02 Total standard GSEP-ECP-103, Revision 02 Total standard GSEP-ECP-103, Revision 02 Total standard GS EP-ECP-103, Revision 02 Total standard GS EP-ECP-103, Revision 02 Total standard GS EP-ECP-103, Revision 02 Total standard GS EP-ECP-103, Revision 02 Total standard GS EP-ECP-103, Revision 02
NA
NA
Total standard GS EP-ECP-103, Revision 02 NA
NA
NA
Total standard GS EP-ECP-103, Revision 02 NA
NA
NA
Total standard GS EP-ECP-103, Revision 02 NA
NA
NA
Total standard GSEP-ECP-103, Revision 02
NA
NA
NA
Total standard GSEP-ECP-103, Revision 02
NA
NA
NA
Total standard GSEP-ECP-103, Revision 02
NA
NA
NA
Total standard GS EP-ECP-103, Revision 02 NA
NA
NA
Total standard GS EP-ECP-103, Revision 02 NA
kg/ms2
NA
NA
Single 76 phase
Liquid
Gravity
NA
No/NA
NA
Single 77 phase
Liquid
Discharge
NA
No/NA
CS
Sea water lines
NA
11.5 ft/s
3.5 m/s
2 m/s
NA
NA
NA
NA
No/NA
NA
Steam condensate return Continuous
NA
4.9 ft/s
1.5 m/s
NA
NA
NA
NA
NA
No/NA
NA
barg) Continuous operating (20 < P
NA
NA
NA
NA
NA
NA
NA
No/NA
NA
≤ 50 barg)
NA
NA
NA
NA
NA
NA
NA
Single 78 phase
Liquid
Gravity
Single 79 phase
Gas
Discharge
Single 80 phase
Gas
Discharge
Single 81 phase Single 82 phase Single 83 phase
Gas
Gas
Gas
Discharge
NA Gas (excluding flare line) Gas (excluding flare line) Gas (excluding flare line) Gas (excluding flare line) Gas (excluding flare line)
No/NA
NA
Discharge
Discharge
No/NA
NA
≤ 80 barg)
No/NA
NA
NA
Single 84 phase
Gas
Discharge
Single 85 phase
Gas
Discharge
Gas (excluding flare line)
No/NA
NA
Single 86 phase
Gas
Discharge
Gas (excluding flare line)
No/NA
NA
Single 87 phase
Gas
Suction
Gas (excluding flare line)
No/NA
NA
No/NA
NA
≤ 120 barg)
Gas
Suction
Single 89 phase
Gas
Suction
Gas (excluding flare line)
No/NA
NA
Single 90 phase
Gas
Discharge
Gas (excluding flare line)
No/NA
NA
Single 91 phase
Gas
Discharge
Gas (excluding flare line)
barg) Dis-continuous operating compressor discharge (50 < P
No/NA
NA
NA
No/NA
NA
< 10000 NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
kg/ms2
NA
NA
< 0.7 bar/km
< 10000
NA
< 25000
NA
< 0.7 bar/km
< 25000
NA
NA
NA
NA
< 1.15 bar/k m
< 10000
NA
NA
NA
NA
NA
< 1.15 bar/k m
< 15000
≤ 80 barg) Dis-continuous operating compressor discharge (P > 80 barg)
NA
NA
NA
< 1.15 bar/k m
< 25000
NA
NA
NA
NA
NA
<1 bar/km
NA
NA
NA
NA
NA
NA
NA
< 0.25 bar/km
NA
NA
NA
NA
< 2.3 bar/km
NA
NA
NA
NA
<1 bar/km
NA
NA
NA
NA
< 2.3 bar/km
NA
NA
NA
NA
<1 bar/km
NA
NA
NA
Steam
Discharge
NA
No/NA
NA
Single 94 phase
Steam
Discharge
NA
No/NA
NA
m
NA
10 < P ≤ 30 barg, L ≤ 200 m
P ≤ 10 barg, L ≤ 200 m
P ≤ 10 barg, L > 200
NA
138 ft/s
42 m/s
10 < P ≤ 30 barg, L Steam
Discharge
NA
No/NA
NA
> 200 m
NA
138 ft/s
42 m/s
P > 30 barg, L ≤ 200 Steam
Steam
Discharge
Discharge
NA
NA
No/NA
No/NA
kg/ms2
NA
discharge (P ≤ 50
No/NA
kg/ms2
< 15000
Single 93 phase
NA
kg/ms2
NA
< 0.7 bar/km
Discharge
Discharge
kg/ms2
NA
Gas
Steam
NA
NA
Single 92 phase
Single 98 phase
NA
NA
Gas (excluding flare line)
Single 97 phase
NA
< 15000
barg) NA Dis-continuous operating compressor antisurge (P > 80 barg) NA Dis-continuous operating compressor suction (P NA ≤ 50 barg) Dis-continuous operating compressor suction (50 < P ≤ 80 barg) NA Dis-continuous operating compressor suction (P > 80 barg) NA Dis-continuous operating compressor
Single 88 phase
Single 96 phase
< 20000
surge (50 < P ≤ 80
Gas (excluding flare line)
2
kg/ms
< 10000
Continuous operating (80 < P No/NA
kg/ms2 < 7500
Continuous operating (50 < P
Gas (excluding flare line)
Single 95 phase
< 6000
operating (P ≤ 20
NA
m
NA
P > 30 barg, L > 200 m NA
NA
98 ft/s
98 ft/s
30 m/s
30 m/s
2
kg/ms
kg/ms2
2
kg/ms
kg/ms2
Total standard GS EP-ECP-103, Revision 02 Total standard GSEP-ECP-103, Revision 02 Total standard GSEP-ECP-103, Revision 02 Total standard GSEP-ECP-103, Revision 02 Total standard GSEP-ECP-103, Revision 02 Total standard GSEP-ECP-103, Revision 02 Total standard GSEP-ECP-103, Revision 02
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
ρm is apparent
< 6000
Continuous operating 99 Two phase
Gas & Liquid Discharge
NA
No/NA
NA
(P ≤ 20 barg)
NA
NA
NA
NA
NA
kg/ms2
NA
NA
Total standard GSEP-ECP-103, Revision 02
density, Vm is apparent fluid velocity and to be
used for ρm*Vm2 calculations
ρm is apparent
< 7500
Continuous operating 100 Two phase
Gas & Liquid Discharge
NA
No/NA
NA
(20 < P ≤ 50 barg)
NA
NA
NA
NA
NA
kg/ms2
NA
NA
Total standard GSEP-ECP-103, Revision 02
density, Vm is apparent fluid velocity and to be
used for ρm*Vm2 calculations
ρm is apparent
< 10000
Continuous operating 101 Two phase
Gas & Liquid Discharge
NA
No/NA
NA
(50 < P ≤ 80 barg)
NA
NA
NA
NA
NA
kg/ms2
NA
NA
Total standard GSEP-ECP-103, Revision 02
density, Vm is apparent fluid velocity and to be
used for ρm*Vm2 calculations
ρm is apparent
< 15000
Continuous operating 102 Two phase
Gas & Liquid Discharge
NA
No/NA
NA
(80 < P ≤ 120 barg)
NA
NA
NA
NA
NA
kg/ms2
NA
NA
Total standard GSEP-ECP-103, Revision 02
density, Vm is apparent fluid velocity and to be
used for ρm*Vm2 calculations
ρm is apparent
103 Two phase
Gas & Liquid Discharge
NA
No/NA
NA
Continuous operating (P > 120 barg) NA
< 20000 NA
NA
NA
NA
kg/ms2
NA
NA
Total standard GSEP-ECP-103, Revision 02
density, Vm is apparent fluid velocity and to be
used for ρm*Vm2 calculations
ρm is apparent Dis-continuous operating compressor anti104 Two phase
Gas & Liquid Discharge
NA
No/NA
NA
surge (P ≤ 50 barg)
< 10000 NA
NA
NA
NA
NA
kg/ms2
NA
NA
Total standard GSEP-ECP-103, Revision 02
density, Vm is apparent fluid velocity and to be
used for ρm*Vm2 calculations
ρm is apparent Dis-continuous operating compressor anti< 15000
surge (50 < P ≤ 80 105 Two phase
Gas & Liquid Discharge
NA
No/NA
NA
barg)
NA
NA
NA
NA
NA
kg/ms2
NA
NA
Total standard GSEP-ECP-103, Revision 02
density, Vm is apparent fluid velocity and to be
used for ρm*Vm2 calculations
ρm is apparent density, Vm is
106 Two phase
Gas & Liquid Discharge
NA
No/NA
NA
Dis-continuous operating compressor antisurge (P > 80 barg)
< 25000 NA
NA
NA
NA
NA
kg/ms2
NA
NA
Total standard GSEP-ECP-103, Revision 02
apparent fluid velocity and to be
used for ρm*Vm2 calculations
ρm is apparent Dis-continuous operating compressor suction (P 107 Two phase
Gas & Liquid Suction
NA
No/NA
NA
≤ 50 barg)
< 10000 NA
NA
NA
NA
NA
kg/ms2
NA
NA
Total standard GSEP-ECP-103, Revision 02
density, Vm is apparent fluid velocity and to be
used for ρm*Vm2 calculations
ρm is apparent density, Vm is Dis-continuous operating compressor suction 108 Two phase
Gas & Liquid Suction
NA
No/NA
NA
(50 < P ≤ 80 barg)
< 15000 NA
NA
NA
NA
NA
kg/ms2
NA
NA
Total standard GSEP-ECP-103, Revision 02
apparent fluid velocity and to be
used for ρm*Vm2 calculations
ρm is apparent density, Vm is
109 Two phase
Gas & Liquid Suction
NA
No/NA
NA
Dis-continuous operating compressor suction (P > 80 barg) NA
< 25000 NA
NA
NA
NA
2
kg/ms
NA
NA
Total standard GSEP-ECP-103, Revision 02
apparent fluid velocity and to be
used for ρm*Vm2 calculations
ρm is apparent Dis-continuous operating compressor discharge 110 Two phase
Gas & Liquid Discharge
NA
No/NA
NA
(P ≤ 50 barg)
< 10000 NA
NA
NA
NA
NA
kg/ms2
NA
NA
Total standard GSEP-ECP-103, Revision 02
density, Vm is apparent fluid velocity and to be
used for ρm*Vm2 calculations
ρm is apparent Dis-continuous operating compressor discharge 111 Two phase
Gas & Liquid Discharge
NA
No/NA
NA
(50 < P ≤ 80 barg)
< 15000 NA
NA
NA
NA
NA
kg/ms2
NA
NA
Total standard GSEP-ECP-103, Revision 02
density, Vm is apparent fluid velocity and to be
used for ρm*Vm2 calculations
ρm is apparent
112 Two phase
Gas & Liquid Discharge
NA
No/NA
NA
Single 113 phase
Gas
Discharge
Flare gas
No/NA
NA
Single 114 phase
Gas
Discharge
Flare gas
No/NA
NA
Single 115 phase
Gas
Discharge
Flare gas
No/NA
NA
Single 116 phase
Gas
Discharge
Single 117 phase
Gas
118 Two phase
Gas & Liquid Discharge
Single 119 phase
Single 120 phase
Liquid
Gas
Discharge
Discharge
Discharge
Flare gas
Flare gas Flare gas and condensate
NA
NA
Dis-continuous operating compressor discharge (P > 80 barg) NA Upstream of relieving device, Line size ≤ 2" NA Upstream of relieving device, Operating pressure ≤ 50 barg NA Upstream of relieving device, Operating pressure > 50 barg NA
No/NA
NA
Upstream of downstream device, Intermittent flow NA downstream device, Continuous flow NA
No/NA
NA
Upstream of relieving device NA
No/NA
No/NA
No/NA
NA
NA
Pressurized service (Pipeline)
NA
Pressurized service (Pipeline) NA
NA
density, Vm is apparent fluid velocity and to be
NA
NA
NA
NA
Total standard GSused for ρm*Vm2 EP-ECP-103, Revision 02 calculations Total standard GS EP-ECP-103, Revision 02 NA
NA
NA
Total standard GS EP-ECP-103, Revision 02 NA
NA
NA
Total standard GS EP-ECP-103, Revision 02 NA
< 25000 NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
kg/ms2
≤ 25000 kg/ms2
≤ 30000 kg/ms2
≤ 50000 2
kg/ms
For ρ > 100000 ≤ NA
NA
NA
NA
2
kg/ms
< 0.7
NA
< 0.35
NA
< 0.25
NA
Continuous operation: Vmax
NA
SHELL DEP 31.40.00.10 General, Pipeline engineering
Continuous operation: Vmax
NA
SHELL DEP 31.40.00.10 General, Pipeline engineering
≤ 50000 NA
NA
NA
NA
NA
NA
NA
NA
3.3 ft/s to 3.3 ft/s: Normal velocity
1 to 2 m/s: Normal velocity
1 m/s, if separa te water phase is presen t NA
16.4 ft/s to 32.8 ft/s: Normal velocity
5to 10 m/s: Normal velocity
kg/ms2
≤ 50000
NA
NA
kg/ms2
NA
NA
2
Total standard GS EP-ECP-103, Revision 02 Total standard GS EP-ECP-103, Revision 02 Total standard GSEP-ECP-103, Revision 02
150000
NA
NA
kg/ms vibration and line supports are required
NA
NA
should be less than 4 m/s
should be less than 20 m/s
