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Folder PCA0002-2b

 Container

Contains 49 Results:

All safety precautions are strictly followed to assure no one is in the area when the X-ray crawler is turned on., 1976-07

 Item — Folder: PCA0002-2b
Identifier: PCA0002-2b-40
Scope and Contents

PC9032-19

Dates: Issued: 1976-07
Found in: Alaska State Library - Historical Collections Finding Aids / PCA 2, Alyeska Pipeline Service Company : Trans-Alaska Pipeline Construction Collection, 1976-1977 / PCA 2 Folder 2b: ONE WELD On the trans Alaska pipeline

After the radiographs are made, the film belts are taken to a mobile field darkroom where the film is processed., 1976-07

 Item — Folder: PCA0002-2b
Identifier: PCA0002-2b-41
Scope and Contents

PC9034-7

Dates: Issued: 1976-07
Found in: Alaska State Library - Historical Collections Finding Aids / PCA 2, Alyeska Pipeline Service Company : Trans-Alaska Pipeline Construction Collection, 1976-1977 / PCA 2 Folder 2b: ONE WELD On the trans Alaska pipeline

The radiograph is examined by an interpreter, who determines weld acceptability., 1976-07

 Item — Folder: PCA0002-2b
Identifier: PCA0002-2b-42
Scope and Contents

PC9034-13

Dates: Issued: 1976-07
Found in: Alaska State Library - Historical Collections Finding Aids / PCA 2, Alyeska Pipeline Service Company : Trans-Alaska Pipeline Construction Collection, 1976-1977 / PCA 2 Folder 2b: ONE WELD On the trans Alaska pipeline

The interpreter looks for such things and porosity—or gas pockets which are small spherical or elongated holes and for slag inclusion, which is electrode coating material entrapped between individual weld passes; for cracks, which could result from for instance, handling of the pipe with only the root pass completed and for inadequate penetration, which is a condition where the root pass has not completely penetrated into the pipe., 1976-07

 Item — Folder: PCA0002-2b
Identifier: PCA0002-2b-43
Scope and Contents

PC9034-1

Dates: Issued: 1976-07
Found in: Alaska State Library - Historical Collections Finding Aids / PCA 2, Alyeska Pipeline Service Company : Trans-Alaska Pipeline Construction Collection, 1976-1977 / PCA 2 Folder 2b: ONE WELD On the trans Alaska pipeline

On the radiograph of weld 38031, the interpreter has found an indication of elongated porosity, measuring ¼ inch and exceeding the acceptance criteria. And although radiographer, by virtue of his experience, judges the location to be in the root pass., 1976-07

 Item — Folder: PCA0002-2b
Identifier: PCA0002-2b-44
Scope and Contents

PC9033-4

Dates: Issued: 1976-07
Found in: Alaska State Library - Historical Collections Finding Aids / PCA 2, Alyeska Pipeline Service Company : Trans-Alaska Pipeline Construction Collection, 1976-1977 / PCA 2 Folder 2b: ONE WELD On the trans Alaska pipeline

This drawing shows the possible location on the porosity. (Note the dot on the bottom of the weld.) This weld will be repaired by grinding the internal weld reinforcement flush with the pipe., 1976-07

 Item — Folder: PCA0002-2b
Identifier: PCA0002-2b-45
Scope and Contents

Weld-H

Dates: Issued: 1976-07
Found in: Alaska State Library - Historical Collections Finding Aids / PCA 2, Alyeska Pipeline Service Company : Trans-Alaska Pipeline Construction Collection, 1976-1977 / PCA 2 Folder 2b: ONE WELD On the trans Alaska pipeline

A welder and his helper travel about a quarter-mile down into the section of pipe to weld “38031” and make the necessary repair. Other defects, such as slag inclusion or incomplete fusion, would have required the removal of the weld metal by grinding, re-heating the weld area to be repaired and then re-welding., 1976-07

 Item — Folder: PCA0002-2b
Identifier: PCA0002-2b-46
Scope and Contents

PC9044-8/13

Dates: Issued: 1976-07
Found in: Alaska State Library - Historical Collections Finding Aids / PCA 2, Alyeska Pipeline Service Company : Trans-Alaska Pipeline Construction Collection, 1976-1977 / PCA 2 Folder 2b: ONE WELD On the trans Alaska pipeline

After the repair, the weld is re-X-rayed. While a few isolated spots (porosity) remain on the repair film (top), the weld is now within the specifications., 1976-07

 Item — Folder: PCA0002-2b
Identifier: PCA0002-2b-47
Scope and Contents

PC9034-10

Dates: Issued: 1976-07
Found in: Alaska State Library - Historical Collections Finding Aids / PCA 2, Alyeska Pipeline Service Company : Trans-Alaska Pipeline Construction Collection, 1976-1977 / PCA 2 Folder 2b: ONE WELD On the trans Alaska pipeline

The weld is now certified by a Quality Assurance representative, and released for installation. The final test of the weld will come when the section of the pipeline is hydrostatically tested. The pipe will be filled with water and pressure tested to 125% of the maximum operating pressure for 24 hours., 1976-07

 Item — Folder: PCA0002-2b
Identifier: PCA0002-2b-48
Scope and Contents

PC9046-2

Dates: Issued: 1976-07
Found in: Alaska State Library - Historical Collections Finding Aids / PCA 2, Alyeska Pipeline Service Company : Trans-Alaska Pipeline Construction Collection, 1976-1977 / PCA 2 Folder 2b: ONE WELD On the trans Alaska pipeline

That was the story of one weld on the trans Alaska pipeline. When the project is complete, 60,000 field welds will have been made. The welding, inspection and radiography techniques will have been similar., 1976-07

 Item — Folder: PCA0002-2b
Identifier: PCA0002-2b-49
Scope and Contents

PC9030-7A

Dates: Issued: 1976-07
Found in: Alaska State Library - Historical Collections Finding Aids / PCA 2, Alyeska Pipeline Service Company : Trans-Alaska Pipeline Construction Collection, 1976-1977 / PCA 2 Folder 2b: ONE WELD On the trans Alaska pipeline