Shengli Oil Construction Precision Control Casting Quality Project

Not long ago, in the second-quarter contractor assessment and labor competition assessment and evaluation of the South Trunk Natural Gas Pipeline Project of Shandong Pipeline Network, the Petroleum Engineering Construction Company Shengli Oil Construction Shandong Pipeline South Trunk Project Department came to the fore and made a comprehensive evaluation.
First, and won the title of "Winning Unit"
.

At the commendation meeting, Shengli Oil Construction South Main Line project manager Wang Zhengang received the banner from the owner and said with emotion: "This is not easy to come by

The natural gas pipeline project of the south trunk line of Shandong pipeline network includes 17 contractors including design, supervision, construction, and non-destructive testing.
Among the 6 construction units, 5 of them are brothers from petroleum engineering construction companies.
The work and finer management are not the most detailed, only more detailed
.

Precise control, the process parameters are within the millimetres

The south trunk line project of Shandong pipeline network is a key project for the construction of the national natural gas storage and transportation system in the Bohai Rim region and a key project of the natural gas branch
.

The four-sector line undertaken by Shengli Oil Construction has a total length of 102.

In order to quickly adapt to the new welding process, Shengli Oil Construction started training fully automatic welders in batches in the first half of last year, preparing to build a fully automatic welding unit.
The fully automatic welding unit with senior electric welding technician Li Longfei as the unit leader became the Shandong Pipe Welding a unit of the Wangnan trunk line project
.

After repeated practice, they made the welding technology mature day by day by improving the bevel angle, adjusting the welding parameters, adjusting the welding station, and strictly controlling the temperature between layers

Due to the relatively fixed parameters, the fully automatic welding process is less affected by human factors.
However, if the external environment changes and the parameters are not adjusted in time, it may also cause a large area of ​​quality problems
.

In order to solve the problem of non-fusion defects in the weld, the project department invited experts to the site to conduct a quality analysis, and finally determined that the opening width of the groove was an important reason for the non-fusion

Precisely implement policies and eliminate "consignment management"

There is a well-known "stupid way" in the project department of Shengli Oil Jiannan Main Line, which is to "copy important things five times"
.

Some people wonder: "Isn't this a method used by elementary school students?" "Copying seems to be a dumb method, but it does capture actual results, especially in safety management

Project personnel are highly mobile, and the quality of operators, especially labor subcontractors, is uneven.
How to enhance their safety awareness and effectively strengthen their safety knowledge? Wang Zhengang, who has been a project manager for many years, summed up one of the most effective methods to copy
.

Facts have proved that this "stupid approach" is indeed effective
.

The project department extended this "stupid approach" to quality management

In addition to the "copying method", the Shengli Oil Construction South Main Line Project Department has many unique methods, especially in terms of subcontracting management, which is highly pertinent, effectively preventing the phenomenon of "subcontract management"
.

The project department puts the subcontracted units into unified management, and each subcontracted unit is assigned its own employee to be responsible for the safety monitoring of the unit, personnel attendance, and equipment use
.

In order to ensure the quality of the weld, the project department requires the quality inspector of each unit to upload videos of intermediate frequency heating, bottom welding, and secondary heating before welding of each weld to ensure that the preheating temperature is controlled at 100°C to 150°C.
The temperature is controlled between 80 degrees Celsius and 150 degrees Celsius
.

Every night, the crew leader uploads the photos of each weld signature, the letter of commitment from the crew leader, and the photos of the polished welds of the threaded steel pipes

　　"Management is to think of more methods, think of useful methods
.

" Wang Zhengang said, the management objects are different, and the management methods are also different, which is called precise policy implementation

　　Accurate connection and rapid project operation

　　The biggest advantage of automatic welding technology is low labor intensity and fast welding speed.
For a steel pipe with a diameter of 1219 mm, it takes more than 30 minutes for a skilled electric welder to make a primer, and it only takes more than 90 seconds for automatic welding
.

　　The pure welding time is greatly shortened, and accordingly, the auxiliary links are required to greatly increase the efficiency, otherwise it will cause lagging due to auxiliary processes
.
The project department has made great efforts in the preliminary guarantee work to ensure that the outsourcing worker-peasant relationship, cleaning up the operation belt, pipe supply, on-site pipe deployment, non-destructive testing and other links are all responsible for the special personnel
.
The project department pays close attention to the connection points between the links to ensure that the links are closely interlocked and the entire chain runs smoothly
.

　　Welding is the most important link in the chain
.
At the beginning of the unit formation, Li Longfei, as the crew leader, not only learned the automatic welding technology, but also learned the operations of all types of work of the entire unit, so that vacancies could be filled in time
.
On April 17, a unit set a record for welding
.
He walked more than 30,000 steps on the construction site, operating all types of work
.

　　The effort pays off
.
On June 30, in the first phase of the labor competition held by the owner, the Shengli Oil Construction South Main Line Project Department won the first prize in one fell swoop
.
(Xu Zhihua)