Safety problems that shipyard should pay attention to.

The specific requirements are as follows:

1. Detection of combustible gas before berthing

After it is the factory's turn, it should be parked at the anchorage (the gas replacement project has been completed). The general manager should contact the ship to open the doors of all liquefied gas storage tanks, empty tanks, dry cabins and other closed spaces, and open the valves of all liquefied gas pipelines (if the company personnel open the doors, they must use explosion-proof aluminum or copper tools) for forced ventilation, and then the safety supervisor should board the ship to detect combustible gas and oxygen in all the above-mentioned detectable spaces and pipelines. When the oxygen concentration and combustible gas concentration meet the safety requirements, the wharf of the company can dock reliably (combustible gas concentration ≤ 65438+ 0% of its lower explosion limit).

Second, the safety requirements after berthing

(1) Layout and disclosure of safety fire control facilities

1. Sign the safety agreement immediately after the ship arrives at the factory, and notify the ship to make an emergency call.

2. After the ship berths, the safety firemen are responsible for placing fire-fighting equipment (hoses, fire extinguishers, foam generators, etc.). ) in place, and adjust the laying of hose at any time according to the open flame operation situation, and keep the hose at a certain pressure. Set up a "No Fireworks" warning sign at the entrance of boarding ladder.

3. On the day when the ship arrives at the factory, the safety officer shall mark the oil tank and its ventilation cap according to the oil-water tank layout provided by the ship, and the oil tank mark shall be written in yellow paint.

4. All ship-borne construction personnel must receive safety education and construction safety disclosure in the work area.

5. All units should carefully organize daily pre-shift safety meetings, implement safety requirements, and remind matters needing attention.

② oxygen and combustible gas detection requirements

1. During the repair of the ship in the factory, all combustible gases in the detectable space must be tested every 4 hours, and a certificate must be issued.

2. After opening the valve for gas detection, all piping systems to be constructed must be closed before construction.

3. Oxygen detection must be carried out on the storage tank before explosion.

4, oxygen measurement and explosion measurement must be carried out by two people at the same time, it is forbidden to work alone.

5. Gas concentration standards before the construction of storage tanks and cabinets:

① The oxygen concentration is18% ~ 21%;

(2) When the concentration of combustible gas is lower than 0.5% of its lower explosion limit, open flame operation can be carried out, and other general operations can be carried out when the concentration of combustible gas is lower than its lower explosion limit 1%.

6. When the ship berths the external gear or the ship berths the external gear, it must ensure that the explosion-proof measurement of the adjacent ship is qualified (the adjacent ship issues an explosion-proof measurement sheet).

(3) Fire and explosion protection requirements for equipment, facilities and personal protective equipment

1. All welding machines, fans and other equipment on board must be lined with rubber or wooden boards below, and grounded at parts (such as guardrails) not close to the engine room and piping system. Switch boxes (boxes) of all electrical equipment on board should be in good condition.

2. All tools and equipment entering the cargo oil tank must be confirmed by the general manager team.

3. Explosion-proof copper tools must be used for pipeline disassembly.

3, personnel are strictly prohibited to wear mercerized, chemical fiber cloth or spikes, etc. , and completes the anti-static requirements of labor protection articles.

4. It is forbidden to cut or cut materials on the deck above the cargo hold.

5. All oxyacetylene hoses and welding belts used on board shall be free from any damage, air leakage or bare metal wires, and the joints can be wrapped with adhesive tape.

6, all pipelines must be overhead, shall not block the safe passage, shall not be close to the deck, gas tank or pipeline. Overhead supports must be erected on site with steel pipe feet, and shall not be fixed on the deck by welding. Scaffolding is wrapped in rubber at the bottom of cargo deck.

(4) Requirements for open flame operation

1. All hot work applications are valid on the same day (including ships).

2. The project supervisor must go to the site for safety confirmation before issuing the application form for hot work.

3, cargo oil tank and compartment construction, construction personnel must wear gas masks, and maintain effective ventilation.

4. Before the hull plate replacement project or hot work, the explosion-proof fan must be in place, the welding belt must move in the right direction, and the safety supervisor must detect the combustible gas in the unknown space adjacent to the hot work site and the area that may be touched when Mars is scattered. Only when the gas is qualified can hot work be carried out. During hot work, continuous and effective ventilation must be ensured.

5. Before hot work, the electromechanical piping system must be dismantled manually, all valves connected with it must be closed, the welding belt must be moved in the right direction, and the adjacent open piping system and space shall be tested for combustible gas by the safety supervisor, and hot work can be carried out only after the gas test is qualified. During hot work, continuous and effective ventilation must be maintained.

6, the opening of any pipeline valve, must obtain the consent of the competent group.

7. Any department with open flame operation must send safety personnel aboard to assist the Ministry of Security in safety supervision and management of production safety in this department. All hot spots must be supervised by special personnel. When working with fire on deck and bulkhead, the other side needs supervision.

8. The safety supervisor must place 1 fire extinguishers at all open flame operation points.

（5）

1. The paint operation area is marked with red, white and yellow flags, and the notice of paint operation is hung on the obvious place on the deck.

2. Fireworks are strictly prohibited in the paint area, and the construction team should be supervised by designated personnel. The equipment entering the cabin must meet the explosion-proof requirements, and personnel should wear anti-static clothing.

[6] Safe passage

1. All equipment and materials on board must be placed in order according to the fixed drawings.

2. Do not pile up materials or equipment on the safe passage and block the smooth road.

3. The pipeline passing through the passage must be overhead, and the effective height shall not be less than1.8m. ..

4. For other matters, please refer to the requirements of the manager team.

Other safety requirements and civilized production work.

Cigarettes are not allowed to board the plane.

It is forbidden to enter cargo oil tanks, cabins and other cabins unless required by the project.

The third is to check the lighting wires of the passage daily to ensure that they are in good condition. Other departments should assist suppliers to check used wires every day.

4, strictly abide by the system of listing into the cabin.

5. The general manager is responsible for publicizing the company's safety regulations and requirements to the ship, and the operation of the ship must strictly abide by the safety regulations and requirements of the factory.

6. Clean up the rubbish and waste on the construction site in time every day, "whoever builds it will clean it up".