Pipe Support Field Inspection, Installation & Maintenance

Piping Technology & Products, Inc.
presents… Pipe Support Field Inspection,
Installation & Maintenance Webinar

Yo ur Presenter is…

Godinaer
Jerry rt Design
Le ad Pipe Suppo

Attention Attendees: to listen to the audio portion, check that your speakers or headset are on and
turned up OR dial the number and use the access code4, 2011
August listed in your confirmation email.
Attention P.E.’s: this Webinar is worth 1 PDH credit for TX P.E.’s (send request to enews@pipingtech.com)
Piping Technology & Products, Inc. • http://www.pipingtech.com

PT&P Structure
PIPING TECHNOLOGY & PRODUCTS, INC.
• Engineered Pipe Supports
• Variables, Constants, Big-tons
• Vibration Control Devices – Snubbers, Sway Struts
• Support Assembly Components – Clamps, misc.
hardware
• Pre-insulated Pipe Supports – Cryogenic/cold & Hot
Applications
• Fabricated Pipe Shoes, Guides & Anchors
• Slide Bearing Plates
• Anchor Bolts, Embed Plates ISO 9001:2008 Certified

ICBO Certified, Member of MSS, SPED, APFA

U.S. Bellows, INC. SWECO FAB, INC. Pipe Shields, INC. Fronek A/D E.
• Metallic Expansion • Pressure Vessels • Insulated Pipe Support • Hydraulic Snubbers
Joints
• Pig Launchers & • Commercial & Light Short strut
• Thin-wall, Thick-wall Receivers industrial
Adjustable strut
• Fabric Expansion Joints • Spectacle/Line Blinds • Heavy Industrial -
based on Mounted, • Mechanical Snubbers
• Rectangular Expansion • Instrument Supports Anchors
Joints • DynA/Damp
• ASME/Misc. • Pipe Riser Clamps Compensating Strut
• Slip-type Fabrication
Member of EJMA ASME U-Stamp ASME Nuclear
Qualified

www.pipingtech.com email: info@pipingtech.com ph. 713-731-0030

On-Site Survey & Inspection

Stress Analysis and Design

Pipe Support Testing
K In-house or On-site

Installation
K 10+ years installation
experience
K 35+ years manufacturing
experience

Oversight Field Service Management Team
K Qualified site management
personnel
K Technical assistance


General Inspection
Includes Review of:
K Piping irregularities

K Apparent damage

K Interferences

K Condition of support
components




K New Installation
Appropriate Components?
Testing Completed?
All Stops/Blocks Removed
or Disengaged?
Set to Correct Cold
Position?

K Existing Supports
Still Functional?
Condition of Components?
Load/Position Setting
Correct?
Adjust, Repair or Replace?


Installation of Variable Spring

Designed to support a specified load:

K weight of the pipe, commodity,
flanges, valves, refractory &
insulation through the install to
operating thermal deflection cycle

Coiled springs are used to support
the load and allow movement

Resistance of the coil to a load
changes during compression, which
is why these devices are called
“variables”

Many different designs for variable
supports and a particular
nomenclature used to identify them



Securely attach spring housing to the existing structural or
foundation member
Attach hanger rod where applicable
Attach all related assembly hardware
Perform any hydro-testing as applicable
Remove travel stops
Adjust the load indicator to desired setting (cold/hot load)



Spring Assembly Prior Spring Assembly with
to Hydro-testing Travel Stops Removed


Installation of Constant Spring

Horizontal Constants Vertical Constants
Spring can aligns horizontally Spring can aligns vertically
Permits movements vertically Permits movements vertically

Upthrust Constants
Permits vertical movement only
Spring can aligns vertically or horizontally

Installation of Constant Spring

Used when large amounts of thermal deflections are involved
(2” or more) and around sensitive rotating equipment where a
load variation could be harmful.

U-Type Constant with B-Type Horizontal Constant
Travel Stop Rods Unlocked Aligned to Cold Position


Installation of Restraint Device (Sway Brace)

Restraint Devices
K Oppose Shock loadings
K Brace pipe against sway
K Guide or Restrain movement


Installation of Restraint Device (Sway Brace)

Sway Brace
K recommended to reduce high frequency movement
K guiding or restraining the movement of pipe resulting from
thermal expansion
K bracing a pipe line against sway
K can be utilized in tension or
compression


Installation of Restraint Device (Sway Strut)

Sway Struts
K Restrains movement in one direction while allowing
movement in another direction
K Effective under compressive or tensile forces
K Allows for field adjustment

3-Bolt Pipe Clamp
and Sway Brace
Assembly


Installation of Restraint Device (Hydraulic Snubber)

Hydraulic Snubber
K Designed to allow thermal movement, but restrain impulsive
or cyclic disturbance
K Good for earthquakes, wind and continuous thrust due to
safety valve "blow-off" or pipe rupture


Installation of Restraint Device (Mechanical Snubber)

Mechanical Snubber
K Designed to prevent shock forces
K Limits damaging motions by becoming (locking)
a load carrying member


Installation of Pipe Shoes

Basic Pipe Shoe
K Designed to support vertical
loads
K Clamp Type
used when welding to pipe
is not allowed
Clamp Type
K Welded Type
used when excessive axial
force is present
K Guided Type and Sliding Type
Insulated Type
K Designed to both insulate and
support the pipe
Cold Shoe for LNG Plant


Installation of Slide Plates

Types of Slide Plates - Offers a low coefficient of friction for
sliding surfaces:
K PTFE, 25% Glass Filled
Designed to allow objects to move (slide) freely along the
supporting surface ambient temperature.
K Graphite Slides
Designed to allow objects to move (slide) freely along the
supporting surface at higher temperatures.

PTFE, 25% Glass Filled Graphite

Installation of Slide Plates

K PTFE, 25% Glass Filled and Stainless Steel
Designed to allow objects to move (slide)
freely along the supporting surface
ambient temperature while resisting
oxidation.
K Bronzphite ®
For high temp and heavy loads
K Marinite ®
For extremely high temperatures

Bronzphite ®

Marinite ®


Installation of Hardware Components

Hardware: miscellaneous components required to
complete a specified assembly


Installation of Hardware Components To allow adjustment of height or elevation:

Adjustable Rings Adjustable Clevis Double Bolt
Pipe Clamp

Trapeze Hanger Job-fabricated Pipe Hanger


Existing Supports

Guidelines for On-Site Survey & Inspection

Inspections can be performed
K During operation
K During a shut-down
K Or both
Frequency of inspections
Provide accessibility
Maintain results and develop a follow-up inspection schedule


Existing Supports - Variables
Visually inspect each spring hanger:
K Search for signs of visual cracks,
fractures, and corrosion of the spring
casing and the following:
(1) beam attachment
(2) pin
(3) spring hanger attachment
(4) pipe clamp attachment
(5) weldless eye nut
(6) threaded rod
(9) spring coil
K Check (7) turnbuckle (if present), lock nuts
(8) and other threaded items to ensure
they are secured and fastened
K Compare the position of the (10) coil with
the hot/cold load indicator and operating
range of the spring
K Check the mobility of the (11) load column

Existing Supports – Variables - Remediation

Load Verification
K Read load position
K Determine load is acceptable/unacceptable
K Possible causes of unacceptability


Existing Supports – Variables - Remediation

Adjustment Criteria
K After installation and plant startup, the spring load indicator
should be at the hot position.
K If not, the hanger should be adjusted to the hot/operating
load position


Existing Supports – Variables - Replacement

Replacement Criteria
K Signs of Excessive corrosion or fatigue
K Rust Damage of entire unit
K Modifications to operating conditions

Excessively corroded spring supports


Existing Supports - Constants

Visually inspect each Constant hanger:
K Search for signs of visual cracks, fractures, and
corrosion of the spring casing and the following:
(1) beam attachment
(2) pin
(3) constant hanger attachment
(4) pipe clamp attachment
(5) weldless eye nut
(6) threaded rod
Before and After Picture
(9) spring coil of Constant Load Support
(10) Check to see if Travel Stops are removed that Was Resized
K Check (7) turnbuckle (if present), lock nuts (8) and
other threaded items to ensure they are secured
and fastened
K Compare the position of the (10) coil with the
hot/cold load indicator and operating range of the
spring
K Check the mobility of the (11) load column

Existing Supports – Constants - Remediation

Adjustment Criteria
K After installation and plant startup, the spring load indicator
should be at the hot position.
K If not, the hanger should be adjusted to the hot/operating
load position
K Consider the position of rod (swing angle also)
K Consider adjustment of load (+/- 10%)


Existing Supports – Constants - Remediation

Bearing failure causing the
upthrust constant to function
incorrectly


Existing Supports – Constants - Replacement

Replacement Criteria:
Signs of excessive corrosion or fatigue
Rust damage of entire unit
Modifications to operating conditions
Consider internal components (cam mechanisms, bearings, etc.)


Existing Supports – Restraint Devices

Visually inspect each sway brace/strut/snubber:
K End bracket
K Pipe clamp attachment pins
K Check for tight snug fit
K Mark actual hot/cold
deflections (snubbers)
K Check for leakages
(hydraulic snubbers)
Look at hardware, and
site glass
If there is no oil visible in
the site glass, add oil
Contact manufacturer
K Check for lockups (mechanical snubbers)
K Turnbuckle/locknuts
K Threaded rod
K Record findings

Existing Supports – Restraint Devices - Remediation


Existing Supports – Restraint Devices - Replacement

K Visible signs of leakage
including seal damage
K Obvious signs of breakage
K Excessive corrosion or rust
damage
K Modifications to design
conditions

Adjustment Criteria
K Only the C-C dimension
(available length) can be
adjusted


Existing Supports – Pipe Shoes

Visually inspect each pipe shoe:
K Check for corrosion
K Check for structural integrity
K Check for slippage
K Check for insulation damage
(pre-insulated supports)
K Check for insulating properties Welded Type Pipe Shoes
(pre-insulated supports)


Existing Supports – Pipe Shoes - Remediation

Adjustment
K Align components

K Secure any lock
nuts, cotter pins, etc.


Existing Supports – Pipe Shoes - Replacement


Existing Supports – Slide Plates

Visually inspect
each slide plate:
K Corrosion
K Bonding
K Damage
K Cleanliness
K Welds
K Orientation
K Gaps
K Missing parts


Existing Supports – Slide Plates - Remediation

Slide Plates and Shafts must be Installed

Installation of Slide Plates in the Field


Existing Supports – Slide Plates - Replacement


K Excessive damage to
sliding surfaces
K Disbonding of sliding
material Slide Plate Not Attached

K Improper sizing of slide
plates
K Improper application
(regarding temp./load)
Improper Application


Existing Supports – Hardware

Inspection Criteria
Check for damaged support steel
Check for damaged hanger clamps
Bent hanger rods, hardware, etc.
Defective hanger hardware such as:
disengaged load pins
loose locknuts
missing retaining rings
cracked or inadequate welds

No Lock Nut


Existing Supports – Hardware - Remediation

Adjustment Criteria
K Tighten or loosen rigid rod
supports
K Align components
K Secure any lock nuts, cotter
pins, etc.


Existing Supports – Hardware - Replacement

K Bent or broken components
K Excessive corrosion or rust damage
K Improperly sized components

Clamp and Pipe Heavily Corroded
Clevis Hanger
Needs Replaced

Bent Hanger
Rod


PT&P’s Field Services

PT&P has provided pipe supports for many major construction projects throughout the
world. Our Field Service Division has participated in site surveys, support inspection,
support installation and expansion joint inspection and installation..

We have worked in the following countries:
K Trinidad and Tobago: Bechtel, Wood Group, Atlantic LNG
K Kuwait: Kuwait Power, Equate
K Canada: PetroCanada, Agrium, Hitachi Power, Alstom, Canaport LNG, Thorold Power
K Dubai: Dubai Natural Gas
K Italy: Alstom Engineering
K Malaysia: Petronas
K Mexico: Intergen, Vallaodolid, Condisa, Pemex, Energia Campeche
K Singapore: Sembcorp, Exxon
K United Kingdom: Murco
K United States: Lyondell Houston Refinery, Shell Deer Park, Bechtel Sabine Pass, Aker
Kvaerner Cameron LNG, Lyondell Equistar, Pasadena Refining, Calpine Corporation,
Chevron Phillips, Huntsman Chemical, Dow, BP, Rhodia, Entergy, Exxon, Valero
Refining, Conoco Phillips, Entergy, Black & Veatch West County, Alstom Power, Citgo,
Duke Energy, Marathon, Shaw Cleco, Technip, Constellation Energy


PT&P’s Emergency Service

PT&P is available on a 24x7 basis to fulfill any
emergency or quick-turn requirements.

With a large inventory of stock components for pipe
supports and expansion joints, PT&P can quickly
assemble and ship products for any situation.

For a quick response, please complete the
emergency service request form at
www.pipingtech.com/emergency.


Thank You For Attending…

Pipe Support Field Inspection, Installation
& Maintenance Webinar

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Blog: www.pipesupportsblog.com

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info@pipingtech.com


Pipe Support Field Inspection, Installation & Maintenance

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