ÁLVARO FLEITES MARCOS Université de Caen Normandie
5. Las reuniones y el Compromiso de Luxemburgo
The most likely alarm from the system is the FLOW ALARM. The system will continuously monitor the vacuum in the system to ensure valid samples are being drawn to the sensor. The OGS3.1 has two vacuum pumps. The main pump is used to draw the samples from the sample tubes in the detector cabinet, this ensures fresh samples to the sensor. The sample pump feeds the sample to the sensor, if this flow is restricted it will lead to a FLOW FAILURE ALARM.
The alarm buzzer will sound and the BUZZER SILENCE and ACCEPT/
RESET buttons will light up.
The LCD display will show the following:
XX SAMPLE POINT NAME
FLOW FAILURE ALARM
The sample point LED will change from a steady GREEN to a slow flashing ORANGE.
Note: The sample point LED only changes colour when the unit is in the automatic mode.
Press the BUZZER SILENCE button to stop the buzzer sounding, the red light in this button will also be cancelled.
Press the ACCEPT/RESET button, the red light is this button will be extinguished and the sample point LED changes from slow flashing ORANGE to a steady ORANGE colour.
In the AUTOMATIC mode the system will move to the next sample point and commence to purge the restricted sample point. The restricted sample point will be selected and sampled during the next sequence. The steady ORANGE LED will remain until the restriction is cleared.
In the MANUAL mode the system will relieve the sample pump by taking air from the cabinet when the vacuum exceeds the FLOW FAILURE level, but will try to sample the restricted sample point again after the ACCEPT/RESET button has been pressed. The steady ORANGE LED will remain until the restriction is cleared.
Note: The most common cause for this alarm is forgetting to DISABLE the sample points to ballast tanks which are filled with water. Condensation and water in the sample lines, clogged flame arresters and sticking non-return valves are also common causes.
For further information and operating instructions refer to the manufacturer’s operating manual.
Section 4.3.4 - Page 3 of 3
Issue: Final Draft - November 2007 IMO No: 9323948
SECTION 5: EMErGENCy SySTEMS aNd prOCEdurES 5.1 Emergency Systems and procedures - deck
5.1.1 Fire hydrant System 5.1.2 deck Foam System
5.1.3 discharge of Cargo from a damaged Tank 5.1.4 Cargo Spillage
5.1.5 Emergency Inerting 5.1.6 pump room bilge System 5.1.7 deck drainage and Scuppers 5.1.8 Galley Fire Extinguishing Systems 5.1.9 CO2 Fire Extinguishing System
5.1.10 Fresh Water Mist Fire Extinguishing System
Illustrations
5.1.1a Fire hydrant System on deck 5.1.2a deck Foam System
5.1.5a Emergency Inerting of a ballast Tank 5.1.6a pump room bilge System
5.1.7a Oil Spill pump System
5.1.8a Galley deep Fat Fryer - Wet Chemical Extinguishing 5.1.9a CO2 System
5.1.10a Water Mist Fire Extinguishing System
No.5 Cargo Oil Tank (Starboard) Slop Tank
(Starboard) Slop Tank
(Port)
No.5 Sea Water Ballast Tank (Starboard)
No.4 Cargo Oil Tank (Starboard)
No.4 Sea Water Ballast Tank (Starboard)
No.3 Cargo Oil Tank (Starboard) No.5 Cargo Oil Tank
(Port) No.4 Cargo Oil Tank
(Port) No.3 Cargo Oil Tank
(Port)
No.3 Sea Water Ballast Tank (Starboard) No.5 Sea Water Ballast Tank (Port) No.4 Sea Water Ballast Tank (Port) No.3 Sea Water Ballast Tank (Port)
No.2 Cargo Oil Tank (Starboard) No.2 Cargo Oil Tank
(Port)
No.2 Sea Water Ballast Tank (Starboard) No.2 Sea Water Ballast Tank (Port)
No.1 Cargo Oil Tank (Starboard)
No.1 Cargo Oil Tank (Centre) No.3 Cargo Oil Tank
(Centre) No.4 Cargo Oil Tank
(Centre) No.5 Cargo Oil Tank
(Centre) No.2 Cargo Oil Tank
(Centre)
No.1 Cargo Oil Tank (Port)
No.2 Sea Water Ballast Tank (Starboard) No.2 Sea Water Ballast Tank (Port)
Key
Fire Main Sea Water
EWV036
Steering Gear Room
Pump Room Deck Foam Room
EWV042 Fill for Swimming Pool
AccommodationTo Space
From Additional Fire Pump
To Deck Fire Main
From Bilge Fire/GS Pump Fire System in Engine Room
To Foam System EWV037
EWV026 EWV028
EWV029 EWV027
EWV031 EWV033
EWV034
EWV030 EWV051
EWV035
EWV032
EWV009 EWV010 EWV011
EWV008 EWV007
EWV002
EWV006 EWV005
EWV025 EWV023
EWV024 EWV022
EWV020 EWV021
EWV012
50
EWV018
EWV019
EWV017 EWV016
EWV013
EWV014
EWV015
50
150
150 250
150
150
125 125
80 80 80 80 80
Sea Chest
EWV048 EWV049
EWV003 EWV004
Oil Cooler For Emergency
Fire Pump
Emergency Fire Pump EWV004
EWV046 EWV040 EWV039 EWV038
EWV041 EWV043
EWV045 EWV044
EWV047 EWV050
CP EWV053
EWV001 PI
PI
22,700A/B EWV001
80 50
50 50
50 50
50 50
50 50
50
100
125 50
50 50
50
50
Ejector For Bosun Store Bilge Upper Deck
Ejector Void Space Bilge
Hawse Pipe
Ejector For Chain Locker Bilge
Illustration 5.1.1a Fire Hydrant System on Deck
EFV001
Section 5.1.1 - Page 1 of 2
Issue: Final Draft - November 2007 IMO No: 9323948
5.1 EMErGENCy SySTEMS aNd prOCEdurES - dECK
5.1.1 FIrE hydraNT SySTEM
bilge, Fire and General Service pump Manufacturer: Shinko Industries Ltd
No. of sets: 2
Type: Vertical centrifugal motor-driven self-priming
Model: RVP200-2MS
Capacity: 185/350m3/h at 11/4.5 bar
Rating: 440V, 105kW at 1,800 rpm
Emergency Fire pump
Manufacturer: Shinko Industries Ltd
No. of sets: 1
Model: GVP130M
Type: Vertical, hydraulic motor-driven, centrifugal
Capacity: 75m3/h x 90mth (plus 12m3/h for the hydraulic cooler)
Rating: 34kW at 2,000 rpm
Emergency Fire pump hydraulic unit hydraulic pump
Manufacturer: Uchida Hydraulics Co., Ltd
No. of sets: 1
Model: A10VO 100DR/31-PPC12N00M
Type: Fixed displacement
Flow rate: 150 litre/min, delivery pressure 210 bar
Rating: 62kW at 1,750 rpm
hydraulic Motor
Manufacturer: Uchida Hydraulics Co., Ltd
No. of sets: 1
Model: A2FM63/61-VBB020
Type: Fixed displacement
Flow rate required: 133 litre/min, effective pressure 180 bar
Rating: 34kW at 2,000 rpm
Introduction
The bilge, fire and general service pumps are permanently set up for the fire and foam main service with the discharge and suction valves open.
The pumps in the engine room take suction from the main sea water crossover line in the engine room, the suction for the additional fire pump is from the port side cargo oil pump main sea chest.
The emergency fire pump supplies all of the following services, but at a reduced rate. It is an electro-hydraulically driven self-priming vertical centrifugal pump and is situated in the cargo pump room. The power supply for this pump is taken from the emergency switchboard.
The above pumps can supply sea water to the following services:
• The fire hydrants in the engine room
• The fire hydrants on deck
• The fire hydrants serving the accommodation block
• The fire hydrant in the pump room
• Main foam system
• Hawse pipe anchor wash
• Forward bilge eductors
• IGG room water spray
• Water to the tank cleaning system (indirectly)
The pumps can be started and stopped from the following locations:
• Locally
• Main switchboard group starter panel
• Ship’s control centre in the fire station area
• Bridge after bulkhead panel under outdoor light control panel.
The fire and wash down main runs the full length of the vessel and is branched off to the fire hydrants, which are located so that two jets can be directed onto the fire source. The fire main also has a cross-connection onto the foam system at the foam room.
Isolating valves are positioned along the main deck, between each set of hydrants on the fire main line.