Unit_3100_&_3400_LNG

1. Specific Training Packages

STP
Specific Training Packages
7000-S-31-90-T-0003-00
Specific Training Package

2. Unit 3100 & 3400

Sakhalin Energy LNG/OET/TLU
STP
Unit 3100 & 3400
Specific Training Package

3. The purpose of STP Training is that the operator will have understanding and awareness of the following topics.

1.
Introduction to the Units
2.
Purpose of the Units
3.
Process description
4.
Equipment
5.
Health, Safety and Environment
6.
Routine checks and Quality control
Specific Training Package

4. Introduction to the Units

These units are LNG storage & loading units
Feed is pumped into the rundown lines by LNG product
pumps taking suction from the bottom of the Endflash
vessels in the LNG trains
Specific Training Package

5.

Unit 3100 & 3400Plant
position
Overview
on the Plant overview
pig
U/S
3600
6400
ETP
3300
0300
F4101
4000
EDG
U1100
1500
1400
4100
4200 4400
K1450
K1420/30
4100
4200 4400
U1300
A4420
K4701AB
4000
GTG
U4100
K1440
U4200
Train 2
A1911
A4720AB
K4401
U/S
Train 1
K4711
U1100
4300
4600
9000
4200
1100
4800
1500
1400
6400
CDF
U1300
U4100
U4200
K1440
K1450
6200
K1420/30
3400
K3401
K3401
pig
1000
1600
3100
3400
6000
4100
4900
Specific Training Package

6. Purpose of the Units

To store and load Liquefied Natural Gas
To collect and compress the vapor generated in the process
of filling the tanks. This is known as BOG (boil off gas).
To collect the vapor created when loading ships (ship vapor
return)
Produce fuel gas
Specific Training Package

7. Process description

Holding Mode
A cool down slipstream of LNG rundown is circulated over
the Loading header via the Jetty ring and back to the
Rundown Upstream the partly closed MOV to maintain the
Line temperature
Specific Training Package

8.

Small LNGFlow
Partlyclosedvalve
NonLNGFlow
Full LNGFlow
Closedvalve
Z3401
Cool Dowflow
overtheLoadingHeader
Z3403
PROCESS OVERVIEW HOLDING MODE
34-UZV-402
34-UZV-404
34-UZV-403
T-3102
34-UZV-401
T-3101
34-MOV-003
Rundown
Train1
34-MOV-005
Rundown
Train2
Thermal
Reliefv alv e
34-MOV-001
34-MOV-002
34-MOV-004
34-MOV-006
Specific Training Package
34-HCV-075
34-HCV-074
P-3402A/B/C/D
34-MOV-62
P-3401A/B/C/D
34-HCV-063
34-FCV-217
34-MOV-061
34-FCV-117
34-HCV-062
34-FCV-218
S-3403
34-RV-224
34-FRC-118
34-PCV-115
34-RV-124
S-3401
Openvalve

9. Process description

Loading Mode
The slipstream over the
loading header is closed
The LNG rundown is pumped
uninterrupted to the tanks
LNG is pumped via the tanks
internal loading pumps to the
respective loading lines
supplying the loading header
to the ship via two liquid
loading arms. Expected
loading rate 10000m3/hr
Loading
Specific Training Package

10.

OpenValves
Z3401
LNGRundown
fromtheT rains
Z3403
PROCESS OVERVIEW LOADING MODE
LNGloadingFlow
Closedvalve
34-UZV-402
34-UZV-404
34-UZV-401
34-UZV-403
34-MOV-002
34-MOV-003
Rundown
Train1
34-MOV-005
Rundown
Train2
Thermal
Reliefv alv e
T-3102
34-MOV-001
T-3101
34-MOV-004
34-MOV-006
Specific Training Package
34-HCV-075
34-HCV-074
P-3402A/B/C/D
34-MOV-62
P-3401A/B/C/D
34-HCV-063
34-FCV-217
34-MOV-061
34-FCV-117
34-HCV-062
34-FCV-218
S-3403
34-RV-224
34-FRC-118
34-PCV-115
34-RV-124
S-3401
NonLNGFlow

11. Process description

Vapour Collection
Vapour is sent back from the ship
via the vapour loading arm to the
boil off gas header. It is then
compressed by the boil off gas
compressor and if required by the
End flash compressors. Compressed
BOG is discharged to fuel gas (Unit
4400)
Boil off Compressor
Specific Training Package

12.

PROCESS OVERVIEW BOIL OFF COMPRESSOR
M
E-3401
34-TCV351
V-3401
34-LCV342
Fuel Gas
K-3401
M
34-MOV081
Z-3402
Z-3403
Z-3401
34-FCV342
M
P3404A/B
34-MOV061
34-MOV062
Specific Training Package

13. Major Equipment

Two LNG Storages tanks each
with a capacity of 100,000m3
Eight loading pumps each with a
discharge capacity of 1250
m3/Hr
One boil off compressor with a
capacity of 730T/D
One boil off compressor suction
drum V-3401
Two canned pumps discharging
liquid from the V-3401
Two liquid loading arms(Z-3401
& Z-3404), one vapour return arm
(Z-3402) & a spare for either
liquid or vapour service (Z-3403).
V-3401
Specific Training Package

14. Health, Safety and Environment

Hydraulic oil
Danger to skin, eyes, if exposed e.g.
if hydraulic hoses on the loading arms should burst or
when topping up hydraulic power packs (gangway
and loading arms)
Uncontrolled moment of loading arms
Extremely dangerous, can cause:
Life threatening situations (LTI) injury to personnel, damage
to material, ship & company reputation
Specific Training Package

15. Health, Safety and Environment

Ice formation
Ice blocks falling down from the arms during loading
and disconnecting arms can be dangerous for personnel
Nitrogen
The loading arms are purged with nitrogen to
atmosphere so the chances of asphyxiant concentration are
very small
Specific Training Package

16. Health, Safety and Environment

Environment
Nitrogen
Atmospheric air content of 78% nitrogen so releasing N2 to
the environment is harmless.
HC gas
Flaring from tanks due to excess BOG is mostly avoidable.
When it is unavoidable due to plant emergency situation , the
impact to the environment is not significant.
Lube Oil
The BOG compressor is situated in a curbed area. Any oil
spill will be collected in a sump and sent to the COC system
Specific Training Package

17. Routine Checks & Quality control

Routine Checks & Quality control
Check all electrical nitrogen cable seals and adjust if
required
Check for leaks
Check all rotating equipment for abnormal noise
Check Oil levels
Boil off compressor, lube oil. Loading arms hydraulic power
packs and gang way hydraulic pack
Specific Training Package

18. Routine Checks & Quality Control

Routine Checks & Quality Control
Loading of ship
One operator on the Jetty at all times
Monitoring for leaks
Monitoring Gangway position
Carry out ship safety checks list every 4 hour together with
ship personnel
Specific Training Package

19. Routine Checks & Quality control

Routine Checks & Quality control
The LNG product quality is controlled in the upstream
liquefaction. However, this unit has automatic sampling
systems to monitor the quality of:
LNG in the loading header during ship loading to verifying
the quality of the cargo
Ship vapour return to the boil off header to monitor the
quality of the vapour. This determines whether to route the
gas to the compressor or to flare (high on Nitrogen, low
heating value)
On the LNG tanks a density difference alarm is installed. If in
alarm the possibility for rollover exists. In this case a loading
pump can be started on full recycle to mix the liquid in the
tank
All the quality control instruments will have to be monitored
by the Panel Operator
Specific Training Package