Ecole Sigtto Questionare

Sigtto Questionnaire of 18

Questions adopted from:

Ship Information Questionnaire

for Gas Carriers LPG/C ECOLE

Oil Companies International Marine Forum

Society of International Gas Tanker & Terminal Operators


B1 CARGO GENERAL INFORMATION 1.1 List products which the ship is certified to carry 1.2 Minimum allowable tank temperature 1.3 Maximum permissible tank pressure 1.4 List grades which can be loaded or

discharged simultaneously 1.5 List grades which can be transported simultaneously 1.6 Number of products that can be conditioned

by reliquefaction simultaneously

Ammonia N-Butane

I-Butane

Acetaldehyde

Butadiene

Butylene

Dimethylamine

Isopropylamine

Monoethylamine

Propane

Propylene

Vinyl Cloride (VCM)

Vinylethylether Isoprene Monomer Propylene Oxide

Iso-Pentane

Pentane

Pentene

Diethylether

-48 ºC

7,0 Barg

2

2

2

1.7 State natural tank segregations (NB. Separation must 2

be by the removal of spools or the insertion of blanks)

B2 CARGO TANK

2.1 Type and Materials of Cargo Tanks Independent Type "C", Fine Grain

2.2 Maximum Allowable Relief Valve 7,0 Barg

Settings

2.3 Safety Valve Set Pressure - if Variable 0,5 / 1,5 / 4,85 / 7,0 Barg

Give Range of Pilot Valves

2.4 Maximum Vacuum 50%

2.5 Maximum Cargo Density 0,970 3

T/m

2.6 Maximum rate of cool-down 5 ºC/hr

2.7 State any limitations regarding partially None

filled tanks

2.8 State allowable combinations of filled None

and empty tanks


B3 CARGO TANK CAPACITIES

Tank Capacity m 3 Butane Propane Ammonia Butadiene VCM

(100%) tonnes Cº tonnes Cº tonnes Cº tonnes Cº tonnes Cº tonnes Cº

1 1072 619 10,4 598 -33 704 -25 1001,6 -4

2 442 255 10 247 -33 290 -25 413 -4

3 1763 1019 10 985 -33 1159 -25 1648,36 -4

4

5

6

7

8

Totals 3277 1893 1830 2153 0 3062,96 0

B4 LOADING RATE

4.1 From Refrigerated

Storage Rate m3 /h

4.2 Product With Vapour Without Vapour

Return Return

4.3 Butane 450 450

4.4 Propane 450 300

4.5 Ammonia 460 320

Propylene

4.6 450 220

V.C.M.

450 450

4.7

Butadiene

450 450

4.8 From Pressure Storage

Rate m3 /h

Product

4.9 With Vapour Without Vapour

Return Return

4.10

Butane 0-30 450 450

4.11

Propane 0 500 330

4.12

Propane 10 330

4.13 Propane 20 135

Propane 30 95

4.14 Special Remarks


B5 DISCHARGING - GENERAL

Cargo Pumps

5.1 Type of pumps centrifugal Thune Eureka CL 80

5.2 Number per tank Tk 1&3: 2 Tk 2:1

5.3 Rate (per pump) 90 3

m /hr

5.4 Delivery head 120 mlc

5.5 Maximum density 0,970 3

MT/m

Booster Pump

5.6 Type of pump centrifugal Thune Eureka CP 80

5.7 Number 2

5.8 Rate (per pump) 180 3

m /hr

5.9 Delivery head 120 mlc

5.10 Maximum density 0,680 3

MT/m


B6 DISCHARGE PERFORMANCE

Full Cargo Discharge Times (using all main pumps)

6.1 Fully Propane - 40 ºC

Refrigerated:

Manifold Back

Hours*

With Vapour Without Vapour

6.2

Pressure

Return Return

6.3 1 Bar 10 10

6.4 5 Bar 10 10

10 Bar

15 15

*Indicate difference when manifold strainers are installed

6.5 Pressurized: Propane 0 ºC

Manifold Back

Hours

With Vapour Without Vapour

6.6

Pressure

Return Return

6.7 1 Bar 10 10

6.8 5 Bar 10 10

10 Bar

8,5 8,5

Tank no.

B7 UNPUMPABLES 3

1 2 3 4 5 6 7 8 Total m

7.1 Liquid 0,04 0,02 0,04 0 0 0 0 0 0,1

B8 VAPORISING UNPUMPABLE 8.1 Process used Hot Gas

Time to vaporise liquid unpumpables remaining after full cargo discharge

8.2 - Propane < 3 hrs

8.3 - Butane < 3 hrs

8.4 - Ammonia < 3 hrs

8.5 - Propylene < 3 hrs

8.6 - Butadiene < 3 hrs

8.7 - VCM < 3 hrs


B9 RELIQUEFACTION PLANT 9.1 Plant design conditions - Air Temperature +45 ºC

- Sea Temperature +32 ºC

Plant type 9.3 Single stage/direct

9.4 Two stage/direct

9.5 Simple Cascade

9.7 Coolant type Compressors

9.8 Type and Makers Name Sulzer K 105-2F

9.9 Number 3

9.10 Capacity (per unit) 425 3

m / hr

9.11 Are they Oil-Free

B10 COOLING CAPACITY

State Cooling Capacity for kcal/hr for -

10.1 Propane @ - 42 ºC kcal/hr

10.2 @ - 20 ºC 320000 kcal/hr

10.3 @ - 5 ºC kcal/hr

10.4 Butane @ -5 ºC kcal/hr

10.5 Propylene @ -20 ºC 480000 kcal/hr

10.6 Ammonia @ -15 ºC 600000 kcal/hr


B11 CARGO TEMPERATURE LOWERING CAPABILITY

(Time taken to lower the temperature of ...at sea with sea temperature + 15 ºC)

11.1 Propane from 18ºC to - 42ºC 166 hrs

11.2 from - 5ºC to - 42ºC 138 hrs

11.3 from - 38ºC to - 42ºC 30 hrs

11.4 from + 20 ºC to - 0,5 ºC 26 hrs

11.5 from + 10 ºC to - 0,5 ºC 12 hrs

11.6 Butane from + 20 ºC to - 0,5 ºC hrs

11.7 from + 10 ºC to - 0,5 ºC hrs

11.8 ISO Butane from + 10 ºC to - 5ºC hrs

11.9 Ammonia from 0ºC to -30ºC 130 hrs

11.10 Ammonia from -5 ºC to -30ºC 120 hrs

11.11 Ammonia from -25 ºC to -30ºC 36 hrs

11.12 Ammonia from 20ºC to -5ºC 42 hrs

B12 INERT GAS

Main I.G. Plant 12.1 Type of Plant 12.2 Capacity 12.3 Type of Fuel Used 12.4 Composition of IG 12.5 Lowest dewpopint achievable 12.6 Used for

Auxiliary I.G. or Nitrogen Plant 12.7 Type of System 12.8 Capacity 12.9 Composition of IG

(O2 - Co2 - Co - Nox - N2) 12.10 Lowest dewpoint achievable 12.11 Used for

Nitrogen 12.12 Liquid storage capacity: 12.13 Daily Boil-of loss 12.14 Maximum supply pressure: 12.15 Supply capacity 12.16 Used for 12.17 HP Nitrogen

Smit Ovens GIN/ST 350/310

I.G. 350, N2 210 m3/hr

MGO 0,3-14-200ppm-200ppm-Balance

-40 ºC

Gas freeing

m3/hr

ºC

0,5 m3

m3 200 Bar

m3/hr

nm3


B13 CARGO TANK INERTING / DE-INERTING

13.1 Time Taken From Fresh Air to Under 0,5% O2 at - 25 ºC Dewpoint 50 hrs

13.2 Time Taken From Cargo Vapour to Fully Inert at - 25 ºC Dewpoint when:

- I.G. density less than product 28 hrs

- I.G. density greater than product hrs

B14 GAS FREEING TO FRESH AIR

14.1 Plant used Inert gas and portable fans

14.2 Time taken from fully inerted condition to fully Approx 24 hrs

breathable fresh air


B15 CHANGING CARGO GRADES

15.1 Propane Butane Ammonia VCM

To

From Time I.G. Used Time I.G. Used Time I.G. Used Time I.G. Used

(Hours) (m3) (Hours) (m

3) (Hours) (m

3) (Hours) (m

3)

Propane 60 60 13000

Butane 60 60 13000

Ammonia 60 60 * 60

VCM 60 13000 60 13000 60

Note any operation that cannot be carried out at sea or any other comments:

* Restrictions may apply

B16 DECK TANK CAPACITIES

16.1 Propane capacity 3

m

16.2 Butane capacity 3

m

16.3 Ammonia capacity 3

m

16.4 Maximum Allowable Relief Valve Setting Barg

16.5 Lowest Permissible Temperature ºC

16.6 Materials

B17 PRE-LOADING COOLDOWN

In the table below, show time and quantity of coolant required to cooldown

cargo tanks from ambient temperature and fully gassed up state sufficient to

allow loading to commence.

Quantity of Time (Hours)

Product Coolant With Vapour Without

17.1 Required Return Line Return Line

Propane 33 Rate max 10

17.2

Butane 33 Rate max 10

17.3

Ammonia 33 Rate max 10

17.4

VCM 33 Rate max 10


B18 VAPORISER

18.1 Type of Vaporiser Re-heater

18.2 Number fitted 1

18.3 Capacity (per unit) - Propane 180 3

m /hr Vapour

18.4 Liquid supply rate 600 3

m /hr Liquid

18.5 Delivery temperature 5 ºC

18.6 Capacity (per unit) - Ammonia 3

m /hr Vapour

18.7 Liquid supply rate 3

m /hr Liquid

18.8 Delivery temperature ºC

18.9 Capacity (per unit) - Nitrogen 3

m /hr Vapour

18.10 Liquid supply rate 3

m /hr Liquid

18.11 Delivery temperature ºC

B19 BLOWER

19.1 Type of Blower I.G. plant

19.2 Rates capacity 350 3

m /hr

19.3 Delivery pressure 5 Barg


B20 CARGO RE-HEATER

20.1 Type of Re-Heater Villa Scambiatori

20.2 Number Fitted 1

20.3 Heating Medium Seawater

Discharge rates with sea water at 15º C

to raise product temperature

20.4 - for Propane from - 42º C to - 5º C 180 3

m /hr

20.5 - for Ammonia from - 33º C to 0º C 110 3

m /hr

20.6 Cargo Heater Curve

B21 HYDRATE CONTROL 21.1 Type of Depressant with Freezing Point Temperature -97,8 ºC

21.2 Quantity of Depressant carried litres 21.3 Means of injection Any

other system used


B22 CARGO MEASUREMENT

Level Gauges 22.1 Are level gauges 22.2 Manufacturer 22.3 Type 22.4 Rated Accuracy 22.5 Certifying Authority

Temperature Gauges 22.6 Manufacturer 22.7 Type 22.8 Rated Accuracy 22.9 Certifying Authority

Local Remote Enraf Nonius

806

dL=+- (2,5 + 0,18xL) mm

Class/Owner/Service Comp.

Eckardt

T1 174 19"

Class/Owner/Service Comp.

Pressure Gauges

22.10 Manufacturer Rosemount 22.11 Type 1151 GP

22.12 Rated Accuracy +- 0,25 %

22.13 Certifying Authority Class/Owner/Service Comp.

Oxygen Analyser 22.14 Manufacturer Teledyne

22.15 Type 320 P

Fixed Gas Analyser 22.16 Manufacturer Dräger

22.17 Type Exytron 5010

22.18 Are Cargo tank Calibration Tables Available

22.19 Measuring Company SGS

22.20 Certifying Company

22.21 Calibration Calculated to cm

22.22 Tables Established to mm

22.23 Trim and List Corrections Available

22.24 Temperature Corrections Available

22.25 Float Gauge Tape Corrections Available


B23 CARGO SAMPLING

23.1 Cargo Tank: 1 2 3 4 5 6 7 8

Sample Level

Top

Middle

Bottom

23.2 Can samples be drawn from -Tank Vapour Outlet

- Manifold Liquid Line

- Manifold Vapour Line

- Pump Discharge Line

23.3 State Connection Type and Size 1/2" NPT M


B24 CARGO MANIFOLD


B25 CARGO MANIFOLD REDUCER

State number of reducers carried on board and

their

flange rating and size:

25.1 ANSI Class 300 8" x 6", 6" x 4"

6" x 3"

4" x 2"PN25, 4" x 4"PN25

25.2 ANSI Class 300 to Class 150 8" x 6", 6" x 6", 4" x 2"

25.3 ANSI Class 150

6"/300 x 6" PN25

4"/300 x 4"PN16

6"/300 x 4"PN25

B26 CONNECTIONS TO SHORE FOR ESD AND COMMUNICATIONS SYSTEMS

26.1 Is ESD connection to Shore available

If Yes, which of the following systems are fitted:

Pneumatic

Electrical

Fibre Optic

26.2 Type of Plug Used:

Pneumatic

Electrical Electrical

Fibre Optic 26.3 Is Hose or Cables Available on

Board Specify Length

Pneumatic

Electrical 30

Fibre Optic 26.4 Is Connection Available for Telephone Line

26.5 Are Connections Available on Both Sides of Vessel


B27 MANIFOLD DERRICK / CRANE

27.1 Is Manifold Derrick Provided

27.2 Is Manifold Crane Provided

27.3 Is Lifting Equipment Same Port and Starboard If No, give details tonnes

27.4 State SWL at Maximum Outreach 0,9 tonnes

B28 STORES HANDLING

28.1 Stores Crane/Derrick Location and SWL Boatdeck

0,5 tonnes

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