This document discusses piping design and condition assessment. It covers the history of piping technology from Roman wood piping to modern materials like cast iron and PVC. It also outlines common threats to piping like stress, corrosion, and third party damage. The document then describes different methods for inspecting and assessing piping condition, from individual defect detection techniques to full pipeline inspection. These include electromagnetic testing, ultrasonic testing, and internal smart pig inspections. It emphasizes that a well-planned condition assessment program can prioritize repairs, reduce failures, and save money through preventative rehabilitation.

1. Mechanical Department, BVIT, Navi Mumbai.

2.  System to convey fluids
 Discipline of piping design studies the
efficient transport of fluid.
 Industrial process piping manufacturing
 In-line components senses and controls
 Piping sometimes refers to Piping Design
BVIT
2

3.  Piping technology developed slowly from
Roman period
 Wooden piping found in 1890’s
 Import of cast iron from the U.S in the 1960’s
 Light-gauge copper tubing coming on the
market in the 1930’s
 In 1926 the PVC pipe was invented but not
manufactured until 1940’s
BVIT
3

4.  Stress
 Material
 Installation
 Inspection
 Third party damage
 Cracking
 Corrosion
BVIT
4

5. Individual defect
detection
Spot checks with
statistical extrapolation
• Coupons
• Ultrasonic testing
•Electromagnetic
Full length in-line
testing
•Electromagnetic testing
• In-line leak location
• CCTV inspection
General condition
assessment
Desktop studies
• Failure history
• Soil analysis
• Other existing data
Average wall thickness
• Acoustic pipe wall
assessment
Inspect part of
pipeline; predict the
rest
Inspect entire pipeline
BVIT
5

6.  low frequency acoustic pressure
wave induced in pipe
 This pressure wave causes pipe wall
to “flex” on a microscopic level
6
 Thicker (and therefore stiffer)
pipe walls are more resistant to
this “breathing,” causing the
wave to travel faster
BVIT

7.  Required instrumentation is sent
inside pipes using smart pigs
 Often requires shutdown of line,
installation of launch & retrieval
sites, and cleaning of pipes to
remove tubercles and debris
7
 Provides a continuous profile of
pipe ‐wall thickness.
 Data acquisition and analysis are
labor and cost intensive
BVIT

8.  Detection of leaks and condition
assessment
 Leakage detection technology
 Minimize disruption to normal
operation
8
 Smart Ball® technology is a free
swimming device
 The Smart Ball® technology was
originally developed and
successfully implemented for the
water industry.
BVIT

9.  Reduces overflows, violations & failures
 Prioritizes repair and maintenance efforts
 Reduces emergency repairs or dig &
replace
 Modern technologies utilize trenchless
condition assessment and rehabilitation
techniques
 Can save a lot of money!
BVIT
9

10.  A well-run Condition Assessment & Rehabilitation
Program provides a systematic, consistent, & cost-
effective approach to asset management
 Supports long term capital expenditure planning
 Effective in forecasting future maintenance needs,
prioritizing resource allocation, and costs based on
inspection & condition assessment ratings
 Reduces potential overflows, violations & failures
 Utilizes trenchless technology
 Can save a lot of money!
BVIT
10

11. BVIT
11

12. BVIT
12