PERHITUNGANPERHITUNGAN
KUANTITASKUANTITAS
SISWANTO
PROSEDUR YANG DIGUNAKAN UNTUK OPERASI SERAH TERIMA (CUSTODY TRANSFER) DI BERBAGAI NEGARA, PORT ATAU TERMINAL / INSTALASI BISA BERBEDA SATU DENGAN LAINNYA.
UMUM
SIS1207
TOV : TOTAL OBSERVED VOLUME.
FRA : FLOATING ROOF ADJUSTMENT.
CTSh : CORRECTION FOR TEMPERATURE OF TANK SHELL.
FW : FREE WATER.
GOV : GROSS OBSERVED VOLUME.
VCF : VOLUME CORRECTION FACTOR.
GSV : GROSS STANDARD VOLUME.
WCF : WEIGHT CONVERSION FACTOR.
GSW : GROSS STANDARD WEIGHT.
ISTILAH DAN SINGKATAN
SIS0307
S+W : SEDIMEN AND WATER.
CSW : CORRECTION (FACTOR) FOR SEDIMENT AND WATER.
NSV : NET STANDARD VOLUME.
NSW : NET STANDARD WEIGHT.
TCV : TOTAL CALCULATED VOLUME.
ISTILAH LAIN (TANPA PENYINGKATAN YANG BAKU):
- REFERENCE HEIGHT.
- OBSERVED HEIGHT ATAU MEASURED HEIGHT.
- WET DENSITY DAN DRY DENSITY.
- LOADED DAN DISCHARGED.
ISTILAH DAN SINGKATAN
SIS0307
PENEMPATAN DESIMAL BERIKUT INI (REKOMENDASI DARI API CHAPTER 12.1.1) DIGUNAKAN, SELAMA PROSEDUR PELAPORAN TIDAK BERTENTANGAN DENGAN PRAKTEK TERMINAL.
PELAPORAN DESIMAL
SIS0307
- TANK REFERENCE HEIGHT.
- TANK MEASURED (OBSERVED) HEIGHT.
- PRODUCTS DIP (INNAGE) ATAU ULLAGE (OUTAGE).
- FREE WATER DIP.
- TANK TEMPERATURE (OC / OF).
- TANK DENSITY ATAU API GRAVITY.
- S+W VOLUME %.
- TANK AMBIENT TEMPERATURE.
DATA LAPANGANSHORE TANKS
SIS0307
- FOREWARD DAN AFTERWARD DRAFT.
- LIST DEGREE (PORT OR STARBOARD).
- TANK REFERENCE HEIGHT.
- TANK MEASURED (OBSERVED) HEIGHT.
- PRODUCTS DIP (INNAGE) ATAU ULLAGE (OUTAGE).
- FREE WATER DIP.
- TANK TEMPERATURE (OC / OF).
- TANK DENSITY OR API GRAVITY.
- S+W VOLUME %.
DATA LAPANGANSHIP TANKS
SIS0307
- DENSITY PADA TEMPERATUR STANDARD (15OC
ATAU 60OF).
- FLOATING ROOF ADJUSTMENT (FRA).
- KOREKSI TEMPERATUR PADA TANK SHELL (CTSh),
JIKA ADA.
- TOTAL OBSERVED VOLUME (TOV).
- FREE WATER VOLUME (FW).
- GROSS OBSERVED VOLUME (GOV).
- VOLUME CORRECTION FACTOR (VCF / CTL).
- GROSS STANDARD VOLUME (GSV).
DATA HASIL PERHITUNGANSHORE TANKS
SIS0307
- SEDIMEN AND WATER (S+W) ATAU CORRECTION
FOR SEDIMENT AND WATER (CSW).
- NET STANDARD VOLUME (NSV).
- WEIGHT CONVERSION FACTOR (WCF).
- GROSS STANDARD WEIGHT (GSW).
- NET STANDARD WEIGHT (NSW).
- TOTAL CALCULATED VOLUME (TCV).
DATA HASIL PERHITUNGANSHORE TANKS
SIS0307
- VESSEL TRIM.
- VESSEL TRIM CORRECTION.
- VESSEL LIST CORRECTION.
- DENSITY AT STANDARDS TEMPERATURE (15OC
ATAU 60OF).
- TOTAL OBSERVED VOLUME (TOV).
- FREE WATER VOLUME (FW).
- GROSS OBSERVED VOLUME (GOV).
- VOLUME CORRECTION FACTOR (VCF / CTL).
- GROSS STANDARD VOLUME (GSV).
DATA HASIL PERHITUNGANSHIP TANKS
SIS0307
- SEDIMEN AND WATER (S+W) ATAU CORRECTION
UNTUK SEDIMENT AND WATER (CSW).
- NET STANDARD VOLUME (NSV).
- WEIGHT CONVERSION FACTOR (WCF).
- GROSS STANDARD WEIGHT (GSW).
- NET STANDARD WEIGHT (NSW).
- TOTAL CALCULATED VOLUME (TCV).
DATA HASIL PERHITUNGANSHIP TANKS
SIS0307
DATA YANG TERBACA PADA TABEL SERINGKALI BERBEDA DENGAN ANGKA YANG MUNCUL, MAKA DIGUNAKAN INTERPOLASI LINIER DENGAN RUMUS SEBAGAI BERIKUT:
(X2 - X) (Y2 - Y1)
Y = Y2 - ( )
(X2 - X1)
INTERPOLASI LINIER
X1
X
Y1
X2
Y (?)
Y2
SIS0307
FLOW CHART YANG MENJELASKAN
VOLUME DAN BERAT YANG BERHUBUNGAN DENGAN FAKTOR KOREKSI DAN KONVERSI.
FLOW CHART
SIS0307
(+/-) FRA
TOV
GOV
GSV
GSW
(-) FW
(x) VCF
(x) WCF
(-) S+W
(x) CSW
NSV(+) FW
TCV
(x) CTSh
SHORE TANKS
FLOATING ROOF
FLOW CHART YANG MENJELASKAN
VOLUME DAN BERAT YANG BERHUBUNGAN DENGAN FAKTOR KOREKSI DAN KONVERSI.
FLOW CHART
SIS0307
TOV
GOV
GSV
GSW
(-) FW
(x) VCF
(x) WCF
(-) S+W
(x) CSW
NSV(+) FW
TCV
(x) CTSh
SHORE TANKS
FIXED ROOF
FLOW CHART
SIS0307
(+/-) FRA
SHORE TANKS
(x) WCF wet
(x) WCF dry
TOV
GOV
GSV
NSV
(-) FW
(x) VCF
(x) CSW
GSW
NSW
SHIP’S TANKS
(x) WCF wet
(x) WCF dry
TOV
GOV
GSV
NSV
(-) FW
(x) VCF
(x) CSW
GSW
NSW
(x) CTSh
D1 = (VD - (V2D2 + V3D3)) / V1
KETERANGAN:
D = WET DENSITY.
V = WET OIL VOLUME.
D1 = DRY DENSITY.
D2 = WATER DENSITY.
D3 = SEDIMENT DENSITY.
V1 = DRY OIL VOLUME.
V2 = WATER VOLUME.
V3 = SEDIMENT VOLUME.
PERITUNGAN DRY DENSITY
CATATAN:
DRY DENSITY TIDAK UMUM UNTUK BANYAK NEGARA, PORT DAN TERMINAL.
SIS0307
- TRIMMED BY STERN:
AFTERWARD DRAFT DIKURANGI FORWARD DRAFT
HASILNYA POSITIF.
- TRIMMED BY HEAD:
AFTERWARD DRAFT DIKURANGI FORWARD DRAFT
HASILNYA NEGATIF.
- TABEL KOREKSI TRIM ADA DALAM TABEL KALIBRASI
TANKI KAPAL, DIGUNAKAN UNTUK MENGOREKSI DIP
ATAU ULLAGE .
- KOREKSI TRIM BISA POSITIF ATAU NEGATIF.
KOREKSI TRIM
SIS0307
- LIST BIASANYA DIBACA DARI INCLINOMETER.
- STATUS DARI LIST :
OPORT, JIKA KAPAL CONDONG KE KIRI,
OSTARBOARD, JIKA KAPAL CONDONG KE KANAN.
- TABEL KOREKSI LIST ADA DALAM TABEL KALIBRASI
TANKI KAPAL, DIGUNAKAN UNTUK MENGOREKSI DIP
ATAU ULLAGE .
- LIST CORRECTION BISA POSITIF ATAU
NEGATIF.
KOREKSI LIST
SIS0307
V = (X2 x W) / 2E
KETERANGAN:X = ((( U - (D x E)) x E) + SE = TRIM / LBPV = VOLUME DARI OBQ/ROB.W = LEBAR TANKI.S = SOUNDING (LIQUID DIP READING).U = JARAK DIPPING POINT DAN AFT. BULKHEAD.TRIM = AFT. DRAFT - FWD. DRAFT.LBP = PANJANG KAPAL.
UU
LL
DD
S
Tank GaugingTank Gauging
WEDGE FORMULA
SIS0307
SATUAN DAN TABEL UNTUK PETROLEUM
METRIC AMERICAN BRITISH
1 Linear mm - metres Ft - Inch Ft - Inch
2 Temperature oC oF oF
3 Pressure bar - kg/cm2 psig psig
4 Volume Litres - m3 Barrels - US Gallons Barrels - Imp. Gallons
5 Weight Metric Tons Long Tons - Pounds Long Tons - Pounds
6 Density Correction Table 53A - (53) Table 5A - (5) Table 23A - (23)
7 Density Correction Table 51 Table 3 Table 21
8 Volume Correction Table 52 Table 4 Table 22
9 Volume Correction Table 54A - (54) Table 6A - (6) Table 24A - (24)
10 Weight Correction Table 56 - 57 Table 11 - 13 Table 29
CATATAN:
KONSISTEN DALAM UNIT DAN TABELNYA.
SYSTEM OF UNITSUNITS / TABLESNO.
SEMUA KALKULASI DALAM SISTEM YANG BERBEDA HARUSLAH
SIS0307
METRIC AMERICAN BRITISH
1 Linear mm - metres Ft - Inch Ft - Inch
2 Temperature oC oF oF
3 Pressure bar - kg/cm2 psig psig
4 Volume Litres - m3 Barrels - US Gallons Barrels - Imp. Gallons
5 Weight Metric Tons Long Tons - Pounds Long Tons - Pounds
6 Density Correction Table 53B - 53D - (53) Table 5B - 5D - (5) Table 23B - 23D - (23)
7 Density Correction Table 51 Table 3 Table 21
8 Volume Correction Table 52 Table 4 Table 22
9 Volume Correction Table 54B - 54D - (54) Table 6B - 6D - (6) Table 24B - 24D - (24)
10 Weight Correction Table 56 - 57 Table 11 - 13 Table 29
CATATAN: SEMUA KALKULASI DALAM SISTEM YANG BERBEDA HARUSLAH
KONSISTEN DALAM UNIT DAN TABELNYA.
SYSTEM OF UNITSUNITS / TABLESNO.
SATUAN DAN TABELUNTUK PRODUK PETROLEUM
SIS0307
KUANTITAS KUANTITAS TANKI TANKI DARATDARAT
SIS0307
CONTOH: PERHITUNGAN TANKI DARAT
SIS0307
OPENING (T-6) OPENING (T-6A) REMARKS
1 Reference Height mm 17507 17507 Tank Cap. Table
2 Measured Height mm 17505 17505 Measurement
3 ATG / Tank Remote mm 10881 10881 Measurement
4 GAUGE: Oil + Water mm 10877 10877 Measurement
5 GAUGE: Water only mm 0 0 Measurement
6 Temperature OF 90.0 90.0 Measurement
7 Total Observed Volume Bbls 370476.70 370476.70 Tank Cap. Table
8 Free Water Bbls 0.00 0.00 Tank Cap. Table
9 CTSh 0.9999966 0.9999966 Tank Cap. Table
10 Floating Roof Adjustment Bbls 58.50 58.50 Tank Cap. Table
11 Gross Observed Volume Bbls 370533.94 370533.94 ((7-8)x9)+10
12 API 40.3 40.3 Analysis Data
13 VCF: Table 6 / 6A 0.98577 0.98484 Table-6 / 6A
14 Gross Standard Volume Bbls 365261.24 364916.65 11 x 13
15 WCF: Table 11 0.12858 0.12858 Table-11
16 Gross Standard Weight Long Tons 46965.290 46920.983 14 x 15
17 S+W % Volume 0.05 0.05 Analysis Data
18 S+W Volume Bbls 182.63 182.46 14 x1719 Net Standard Volume Bbls 365078.61 364734.19 14 -1820 WCF: Table 11 0.12858 0.12858 Table-1121 Net Standard Weight Long Tons 46941.808 46897.522 19 x 20
TANK NO. 1301-AUNITFLOATING ROOF
CONTOH: PERHITUNGAN TANKI DARAT
SIS0307
OPENING CLOSING
1 Reference Height mm 17507 17507 Tank Cap. Table
2 Measured Height mm 17505 17505 Measurement
3 ATG / Tank Remote mm 10881 6171 Measurement
4 GAUGE: Oil + Water mm 10877 6168 Measurement
5 GAUGE: Water only mm 0 0 Measurement
6 Temperature OF 90.0 88.0 Measurement
7 Total Observed Volume Bbls 370476.70 206842.30 Tank Cap. Table
8 Free Water Bbls 0.00 0.00 Tank Cap. Table
9 CTSh 0.9999966 1.0000348 Tank Cap. Table
10 Floating Roof Adjustment Bbls 58.50 58.50 Tank Cap. Table
11 Gross Observed Volume Bbls 370533.94 206908.00 ((7-8)x9)+10
12 API 40.3 40.3 Analysis Data
13 VCF: Table 6 0.98577 0.98674 Table-6
14 Gross Standard Volume Bbls 365261.24 204164.4 11 x 13
15 GSV Delivered Bbls 161096.84 OPEN - CLOSE
16 WCF: Table 11 0.12858 0.12858 Table-11
17 Gross Standard Weight Long Tons 46965.290 26251.459 14 x 16
18 GSW Delivered Long Tons 20713.831 OPEN - CLOSE
19 S+W % Volume 0.05 0.05 Analysis Data
20 S+W Volume Bbls 182.63 102.08 14 x1921 Net Standard Volume Bbls 365078.61 204062.32 14 -2022 NSV Delivered Bbls 161016.29 OPEN - CLOSE23 WCF: Table 11 0.12858 0.12858 Table-1124 Net Standard Weight Long Tons 46941.808 26238.333 21 x 2325 NSW Delivered Long Tons 20703.475 OPEN - CLOSE
TANK NO. 1301-AUNITFLOATING ROOF REMARKS
CONTOH: PERHITUNGAN TANKI DARAT
SIS0307
OPENING CLOSING
1 Reference Height mm 17507 17507 Tank Cap. Table
2 Measured Height mm 17505 17505 Measurement
3 ATG / Tank Remote mm 10881 6171 Measurement
4 GAUGE: Oil + Water mm 10877 6168 Measurement
5 GAUGE: Water only mm 10 0 Measurement
6 Temperature OF 90.0 88.0 Measurement
7 Total Observed Volume Bbls 370476.70 206842.30 Tank Cap. Table
8 Free Water Bbls 100.00 0.00 Tank Cap. Table
9 CTSh 0.9999966 1.0000348 Tank Cap. Table
10 Floating Roof Adjustment Bbls n/a n/a Tank Cap. Table
11 Gross Observed Volume Bbls 370375.44 206849.50 (7-8)x9
12 API 40.3 40.3 Analysis Data
13 VCF: Table 6 0.98577 0.98674 Table-6
14 Gross Standard Volume Bbls 365105 204106.68 11 x 13
15 GSV Delivered Bbls 160998.32 OPEN - CLOSE
16 WCF: Table 11 0.12858 0.12858 Table-11
17 Gross Standard Weight Long Tons 46945.201 26244.037 14 x 16
18 GSW Delivered Long Tons 20701.164 OPEN - CLOSE
19 S+W % Volume 0.05 0.05 Analysis Data
20 S+W Volume Bbls 182.55 102.05 14 x1921 Net Standard Volume Bbls 364922.45 204004.63 14 -2022 NSV Delivered Bbls 160917.82 OPEN - CLOSE23 WCF: Table 11 0.12858 0.12858 Table-1124 Net Standard Weight Long Tons 46921.729 26230.915 21 x 2325 NSW Delivered Long Tons 20690.814 OPEN - CLOSE
TANK NO. 1301-DUNITFIXED ROOF REMARKS
KUANTITAS KUANTITAS TANKI TANKI KAPALKAPAL
SIS0307
CONTOH: PERHITUNGAN TANKI KAPAL
SIS0307
Fw d Draft = 9.50 m Aft Draft = 11.20 m
Port List = 0.00 deg. Stb List = 0.00 deg.
LBP = 230.50 m Sea condition = Calm.
UNIT 1P 1S 2P 2S 3C
Distance (U) m 0.986 0.986 0.986 0.986 0.986
Depth (D) m 8.320 8.320 8.320 8.320 8.320
Sounding (S) m 0.000 0.000 0.000 0.050 0.100
Length (L) m 22.45 22.45 22.45 22.45 22.45
Trim/LBP (E) 0.00738 0.00738 0.00738 0.00738 0.00738
Wide (W) m 20.342 20.342 20.342 20.342 20.342
X Value m N/A N/A N/A 0.05682 0.10682
Y Value m 0.16568 0.16568 0.16568 0.16568 0.16568
GOV m3 0 0 0 4.449 15.726
Table-1 Factor m3 to bbls 6.28981 6.28981 6.28981 6.28981 6.28981
GOV bbls 0 0 0 27.98 98.91
GOV Total = 126.89 bbls
Y = L x E
2S 0.05682 0.16568 X < Y
3C 0.10682 0.16568 X < Y
Wedge Calculation
Wedge Calculation
X = ((( U - (D x E)) x E ) + S
E = TRIM / LBP
GOV = ( X2 x W ) / ( 2E )
TANK NO. X Y REMARKS
SHIP'S TANKS BEFORE LOADING
PARTICULARTANK NO.
NOTE: The formula valid if X less than Y.
CONTOH: PERHITUNGAN TANKI KAPAL
SIS0307
Fw d Draft = 10..00 m Aft Draft = 10.00 m
Port List = 0.00 deg. Stb List = 0.00 deg.
API = n/a Sea condition = Calm.
UNIT 1P 1S 2P 2S 3C
Reference Height mm 19055 19049 18841 18851 18849
Ullage mm 19055 19049 18841 18841 18844
Corrected Ullage mm 19055 19049 18841 18841 18844
Temperature oF n/a n/a n/a n/a n/a
TOV bbls 0.00 0.00 0.00 40.00 22.00
Free Water Dip mm 0 0 0 0 0
Free Water Volume bbls 0.00 0.00 0.00 0.00 0.00
Liqud Hyd. (Level) mm 19055 19049 18841 18841 18844
Liqud Hyd. (Volume) bbls 0.00 0.00 0.00 40.00 22.00
Non. Liq. Hyd. (L) mm 0 0 0 0 0
Non. Liq. Hyd. (Vol.) bbls 0.00 0.00 0.00 0.00 0.00
62.00 bbls
0.00 bbls
0.00 bbls
FW Total =
Non Liquid Hydrocarbon Total =
SHIP'S TANKS BEFORE LOADING
PARTICULARTANK NO.
GOV Total =
CONTOH: PERHITUNGAN TANKI KAPAL
SIS0307
Fw d Draft = 7.10 m Aft Draft = 9.70 m
Port List = 0.00 deg. Stb List = 0.00 deg.
API = 40.3 Sea condition = Slight.
UNIT 1P 1S 2P 2S 3C
Reference Height mm 19055 19049 18841 18851 18849
Ullage mm 1.53 1.37 1.34 1.37 1.32
Corrected Ullage mm 1.67 1.52 1.49 1.51 1.47
Temperature oF 96 96 96 96 96
TOV bbls 49973.00 10222.00 100043.00 90968.00 49922.00
Free Water Dip mm 0 0.01 0 0.02 0
Free Water Volume bbls 0.00 40.00 0.00 80.00 0.00
GOV bbls 49973.00 10182.00 100043.00 90888.00 49922.00
VCF T-6 0.98294 0.98294 0.98294 0.98294 0.98294
GSV bbls 49120.46 10008.30 98336.27 89337.45 49070.33
TOV Total = 301128.00 bbls
GOV Total = 301008.00 bbls
120.00 bbls
295872.81 bbls
Corrected Ullage diperoleh dari Ullage yang dikoreksi oleh Trim dan List Correction.
Catatan:
FW Total =
GSV =
SHIP'S TANKS AFTER LOADING
PARTICULARTANK NO.
CONTOH: PERHITUNGAN TANKI KAPAL
SIS0307
B/ LOADING A/ LOADING
1 API N/A 40.3 Analysisi Data
2 Gross Standard Volume Bbls 62.00 295872.81 Calculation
3 GSV Loaded Bbls 295810.81 After - Before
4 WCF: Table 11 0.12858 0.12858 Table-11
5 Gross Standard Weight Long Tons 7.972 38043.326 2 x 4
6 GSW Loaded Long Tons 38035.35 After - Before
7 S+W % Volume N/A 0.05 Analysisi Data
8 S+W Volume Bbls N/A 147.94 2 x 7
9 Net Standard Volume Bbls 62.00 295724.87 2 - 8
10 NSV Loaded Bbls 295662.87 After - Before
11 WCF: Table 11 0.12858 0.12858 Table-11
12 Net Standard Weight Long Tons 7.972 38024.304 9 x 11
13 NSW Loaded Long Tons 38016.33 After - Before
GOV Before Loading as GSV.
WCF Before Loading same as A/Loading.
SHIP'S TANKSUNIT
SHIP'S TANK NO.: 1P, 1S, 2P, 2S, 3CREMARKS
SUMMARY AT LOADING
Assumption :