Case alert 丨 Talk about the importance of the maintenance and inspection of the oil -based ship cargo pump compartment maintenance and inspection

Case warning

Focus

Typical Case

· Hong Kong "GXXXX" rotation pumping cabin fire accident

· Zhoushan "Hong Kong X7" rotation pump compartment explosion accident

· Dongguan's "Feng XX8" wheel pump compartment leak caused the cabin explosion accident

Maritime investigator suggestion

· Equipment daily inspection and maintenance

· Daily training exercise of crew

· Destructive inspections at work

· Company monitoring and support

Talk about the importance of the maintenance and inspection

The cargo pump compartment is a special place for unloading equipment such as liquid cargo shipping pumps and cockpit pumps. As part of the cargo pump compartment, there is a major risk of liquid cargo leakage. In recent years, during the operation of the liquid cargo ship, a fire explosion caused by the leak of the cargo pump compartment occurred. This article combines several cases of the fire explosion of the oil -based ship to remind the cargo pump compartment equipment to check and maintain precautions.

Typical Case

Hong Kong "GXXXX" rotation pumping cabin fire accident

Overview of the accident:

At about 0940 on January 31, 2017, the Hong Kong "GXXXX" wheels caused a fire in the cargo oil leak in the pump compartment of the 300,000 -ton crude oil terminal in Qinglan Mountain in Meizhou Bay, causing the NO.2 cargo pump bearing damage , Losses such as failure of the cargo pump compartment oxygen and hydrogen sulfide detection system.

Analysis of the accident:

01

Reasons for fire. During the unloading of this wheel, the NO.2 cargo pump transmission shaft was abnormal, causing the oil pump bearing box and mechanical sealing parts to be damaged, and high temperatures were generated.

02

According to the operating record of the cargo pump, during the unloading day before the incident, the NO.2 cargo pump had abnormal working temperature in the transmission shaft bearing, but the driver of the cargo control room did not take any measures on the temperature abnormal; Driver and duty driver of the unloading operation did not monitor the work temperature of the NO.2 cargo pump transmission bearing, and failed to find abnormal oil pump work in time.

03

The turbine department failed to effectively maintain the cargo pump in accordance with the ship safety management system. During the unloading period, the inspection of the cargo pump compartment on duty was in the form of the cargo pump compartment, and the hidden dangers of the accident were found.

Zhoushan "Hong Kong X7" rotation pump capsule explosion accident

Overview of the accident:

At around 1523:00 on March 2, 2015, the "Hong Kong X7" wheel of Zhoushan oil tanker "Hong Kong X7" was anchored in the southeast waters of Zhujiajian Island, Zhoushan.

Analysis of the accident:

01

Cause of the explosion. A large amount of combustible gas is accumulated in the cargo pump compartment. Under a certain amount of air, the combustible gas encounters the heat or spark exploded when the fuel gas is grinded when the cargo pump bearings are grinded.

02

At the time of the incident, the crew had found that the NO.2 cargo pump was fever, oil leakage, and the mechanical ventilation device of the cargo pump compartment failed. When the cleaning cabin operation was unloaded, the operation plan was not formulated on the ship, the cargo pump compartment was not measured, and the cargo pump compartment exploded.

03

After the accident, the two cargo pumps were disintegrated, and the metal rolling balls in the bearings were not incomplete and there was no lubricating oil, indicating that there was no effect on the daily maintenance of the cargo pump on the ship.

Dongguan's "Feng XX8" wheel pump compartment leak caused the cabin explosion accident

Overview of the accident:

At 12:31 on October 20, 2016, the "Feng XX 8" wheel belonging to Dongguan XX Marine Co., Ltd. in Dongguan City, Guangdong Province, caused a pump chamber leak in the XX dangerous chemical pier in Hainan Province XX Province. The accident caused a total of two deaths, serious injuries, and 9 people were injured. The ship's cabin, living area, and driving stations were severely damaged, and the hull was locally fire.

Analysis of the accident:

01

Cause of the explosion. The stone brain oil loaded was leaked by the right cargo pump filter in the pump cabin, and then through the right pressure pump pump through the pump carrier pump, the axis thread pillar and the left cabin cable pipe flowed into the cabin, the petroleum oil was in the cabin When the volatile spread, when the air is mixed with the air to reach the explosion limit, the ignition source explosion in the cabin.

02

Before loading, the crew did not conduct a comprehensive inspection in accordance with relevant regulations, and failed to find that the pumping cable pipe gas was destroyed between the pump and the cabin, and the lack of bolt -to -bolt destruction of the bolt of the carrier pump was not found. The import valve in front of the right cargo pump filter in the pump cabin was not closed. In the process of loading, the timing inspection of the pump cabin was not maintained, the effective inspection of the cabin was not maintained, and the stone brain oil was leaked to the pump cabin and cabin in time, resulting in failure to take emergency measures.

03

The ship equipment seriously lacks maintenance, the cargo pump filter, the fixed flaw gas detection device of the cargo pump compartment, the high -level alarm device of the liquid level, the carrier pump through the axis axis, the cockpit cable tube and other maintenance , Failure cannot be used normally, the damage of the shot sealing.

04

The company's shore -based support support was poor. Before the incident, the round proposed to the company for replacement and maintenance of the pump cockpit oil pipe and pressure pipe, but the company did not respond in time Maintain a good state and launch hidden safety hazards of accidents.

Maritime investigator suggestion

According to the above -mentioned case analysis, the crew did not follow the rules and did not effectively perform duty duties during the duty period, insufficient maintenance of related equipment, and the failure of the company to provide sufficient support guarantee was the main cause of the accident. In order to avoid such accidents to the greatest extent, maritime investigators reminded the management of oil -based ship pump compartment equipment to implement the following safety measures:

Equipment daily inspection and maintenance

1. Keep the bottom of the cargo pump compartment clean and water -free to prevent hydrocarbon liquid or gas leakage into the pump cabin.

2. Regularly maintain the cargo pump, check whether the case is damaged, whether the bearing is overdract, whether the pump thexial joint is tight, and whether there are noise and leakage at runtime.

3. Check the tube system in the tank to ensure that there is no rust and corrosion of the pipeline. Flatics, padding, filters, gate valves, fixed brackets, blind boards and other equipment components are intact to prevent tube leakage.

4. Check the overall part of the cabin through the cabin and cable pipes and the cockpit axis to ensure the fullness of the air tightness of the shot of the cockpit between the cargo pump and other places.

5. Check whether the mechanical ventilation, combustible gas detector, the cabin base monitor, and other equipment are running normally, and whether the cable protective shell sleeve, lighting lampshade, etc. are intact.

Daily training exercise of crew

1. The business training of operating procedures such as loading and unloading operations, laundering, drivers, and cargo pump compartment should be strengthened to ensure safety precautions such as mechanical ventilation, gas detection, electrostatic elimination, and cargo pump operation inspection.

2. Regularly carry out emergency exercises such as closed space, cargo leakage, and personnel injury to improve the emergency response ability of crew.

When the ship is carried out, unloading, cleaning the cabin, etc., the "GB18434-2001), the" International Oil and Wharf Safety Guide "and the company's security management system documents shall be strictly complied with measure.

Destructive inspections at work

1. Before the operation, the crew should open the cabin to ventilate to prevent the volume of combustible gas from gathering. Check that the inner gate valve in the pump compartment is in the correct switch position. The nature of the pipe in the pipeline, the nature of the pad material reacts with the planned goods and dissolve.

2. Insidation of light fires in the cargo pump cabin, and prohibiting the repair of the cargo pump, the flashlights and portable intercom of personnel to enter the cargo pump shall be the type of anti -explosion -proof approval.

3. During the inspection of the pump cabin, observe the leakage of the cargo pump, gate valve, pipeline, etc., such as abnormal odor but not detecting the naked eye, you can use soapy water coating film to observe and judge; check whether the parameters such as the speed, pressure, temperature and other parameters of the cargo pump pump, pressure, temperature and other parameters are normal There are pump axis bearing, there is no overheating, abnormal vibration and other phenomena. It is found that abnormal analysis and judgment is found in time, and emergency measures such as stopping pumps are immediately adopted in emergency situations.

Company monitoring and support

1. The company's shore -based department shall strengthen the inspection and guidance of the maintenance work such as the mechanical ventilation, cargo pump, pipeline, pipelines, valves, filters, pads, combustible gas detectors, compartment liquid level monitoring alarms, etc. The review of ship maintenance work statements, shipping ship inspection, remote video and other methods to urge crew members to implement equipment inspection, testing, maintenance, etc.

2. The company should ensure the investment of equipment maintenance funds, regularly conduct cargo pump compartment air tight experiments and ultrasonic inspections, and timely repairs and repairs and repairs should be replaced and replaced by pipelines, valve leakage, bearing wear, and monitoring alarm system failures.

Source: Fujian Maritime

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