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API 1169 > Definitions > Flashcards

Flashcards in Definitions Deck (27):
1

ARC BURN

A localized condition or deposit that is caused by an electric arc and consists of remelted metal, heat-affected metal, a change in the surface profile, or a combination thereof.

2

WRINKLE BEND

Pipe bend produced by a field machine or controlled process that may result in prominent contour discontinuities on the inner radius. The wrinkle is deliberately introduced as a means of shortening the inside meridian of the bend

3

YEILD STRENGTH

The stress at which a material exhibits the specified limiting offset or specified total elongation under load in a tensile test as prescribe by the specification or standard

4

WATER CROSSING

The crossing by an onshore pipeline of a bay,lake,river,or major stream

5

TOLERANCE ZONE

The space in which a line or facility is located and in which special care is to be taken

6

TRACEABILITY

Ability to trace the history, application or location of an object (regarding a product or service, can relate to the origin of material and parts,processing history, distribution and location after delivery)

7

STATIONING

A measure of length used to identify locations along the pipeline which provides a geospatial reference for pipeline features and construction. Stationing is typically measured in feet, usually indicated as X+XX. Generally, the beginning of the pipeline route is designated as zero and station values increase along the route. Some operators use mile posts as a method of stationing

8

ROW

Strip of land on which utilities and similar facilities are constructed in which a pipeline company and landowner both have a legal interest

9

ROOT BEAD

First or stringer bead that initially joins two sections of pipe, a section of pipe to a fitting or two fittings

10

SEAM

The longitudinal or spiral weld in fabricated line pipe.

11

PITTING

Localized corrosion of a metal surface that is confined to a small area and takes the form of cavities called pits.

12

POLARIZATION

The change from the open-circuit potential as a result of current across the electrode/electrolyte interface

13

MITER

Two or more straight sections of pipe matched and joined on a line bisecting the angle of junction so as to produce a change in direction

14

NEAR MISS

An event where damage did not occur, but a clear potential for damage was identified

15

NOBLE

The positive direction of electrode potential, thus resembling noble metals such as gold and platinum

16

NOMINAL PIPE SIZE (NPS)

A dimensionless abbreviation followed by the numerical portion of the previously used inch nominal size of the matching

17

CERCLA

Comprehensive Environmental Response, Compensation and Liability Act

18

FWPCA/CLEAN WATER ACT

Federal Water Pollution Control Act

19

HB

Hollow bead porosity

20

NPDES

National Pollution Discharge Elimination System

21

PEL

Permissible Exposure limit

22

SHIELDED METAL ARC WELDING (SMAW)

An arc welding process with an arc between a covered electrode and the weld pool.

23

SHIELDING

Preventing or diverting the flow of cathodic protection current from its natural path

24

REWORK

REWORK (WELDING)

Action on a nonconforming product or service to maki it conform to the requirements.

During the welding or after the weld has been completed, the removal of an imperfection that requires grinding and/or welding that is performed prior to visual or non-destructive testing of a completed weld(not repair).

25

RIPPLE

A permanent localized deformation of a pipe wall characterized by several alternating low amplitude inward/outward lobes

26

RUPTURE

A complete failure of any portion of the pipeline that allows the product to escape to the environment.

27

SEAM

SEAM WELD

The longitudinal or spiral weld in fabricated line pipe

Longitudinal or helical weld in pipe