Definitions

Question 1

ARC BURN

Answer 1

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.

Question 2

WRINKLE BEND

Answer 2

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

Question 3

YEILD STRENGTH

Answer 3

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

Question 4

WATER CROSSING

Answer 4

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

Question 5

TOLERANCE ZONE

Answer 5

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

Question 6

TRACEABILITY

Answer 6

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)

Question 7

STATIONING

Answer 7

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

Question 8

ROW

Answer 8

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

Question 9

ROOT BEAD

Answer 9

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

Question 10

SEAM

Answer 10

The longitudinal or spiral weld in fabricated line pipe.

Question 11

PITTING

Answer 11

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

Question 12

POLARIZATION

Answer 12

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

Question 13

MITER

Answer 13

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

Question 14

NEAR MISS

Answer 14

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

Question 15

NOBLE

Answer 15

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

Question 16

NOMINAL PIPE SIZE (NPS)

Answer 16

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

Question 17

CERCLA

Answer 17

Comprehensive Environmental Response, Compensation and Liability Act

Question 18

FWPCA/CLEAN WATER ACT

Answer 18

Federal Water Pollution Control Act

Question 19

HB

Answer 19

Hollow bead porosity

Question 20

NPDES

Answer 20

National Pollution Discharge Elimination System

Question 21

PEL

Answer 21

Permissible Exposure limit

Question 22

SHIELDED METAL ARC WELDING (SMAW)

Answer 22

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

Question 23

SHIELDING

Answer 23

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

Question 24

REWORK

REWORK (WELDING)

Answer 24

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).

Question 25

RIPPLE

Answer 25

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

Question 26

RUPTURE

Answer 26

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

Question 27

SEAM

SEAM WELD

Answer 27

The longitudinal or spiral weld in fabricated line pipe

Longitudinal or helical weld in pipe