Roller Stands Designed for a Refinery in Mississippi

December 11, 2015

Roller Stands Designed for a 10" Dia. Pipeline at a Refinery in Mississippi

PT&P designed these roller stands for a refinery in Mississippi. The rollers were designed for ease of assembly to support a 10″ diameter pipeline. They are comprised of cast iron roll and sockets, steel roll rod, continuous thread rods and hex nuts. These rollers are designed to support a maximum load of 2,100 lb. and to allow axial movement of the pipeline.

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Compact Spring Supports Designed for a Pump Application in Wyoming

November 30, 2015

Compact Spring Supports Designed for a Pump Application in Wyoming

These compact spring supports were custom designed and built within 4 weeks to support a pump for a facility in Wyoming. The housing was fabricated from A-36 carbon steel and hot-dipped galvanized to protect them against corrosion. The disc springs are engineered using the stainless steel Belleville disc springs designed for large loads but small movements. In this case, the springs are designed to support a load of 11,137 lb. and movement of 0.018″ (upward). Each assembly underwent load testing prior to shipment.

The compact size and resistance to corrosion attributes of these compact spring supports make them ideal for placement under the discharge piping of a pump at this facility. By using these compact spring supports directly on the pump, excessive thermal loading on the pump’s discharge nozzle is resolved and brings it within the pump manufacturer’s allowable limit, so the pump will operate safely, as intended which also results in extended life and low maintenance.

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Register for the next Webinar: Engineered Spring Supports (Practical, Hands-on Approach)

November 12, 2015

This webinar is over… view the recording at: https://devptp.fronekgrp.com/resources/media/webinars/

Live Webinars are worth 1 PDH Credit for TX Professional Engineers

Engineered Spring Supports

Learn how the theoretical applications of spring supports are put into use in the real world. We will start with a review of the working principles of both variable and constant springs. See how brand new spring looks at delivery, and review installation guidelines. Learn the key points to review through the total installation process and subsequently when the springs are in operation. See how to determine if springs need adjustments, re-calibration, refurbishment or replacement. View in field examples, shutdown and isolation procedures. See the selection process required when there are significant changes to the operating condition.

The featured presenter, Jerry Godina has over 16 years experience as a pipe support designer and manages PT&P’s engineer training development program. He also inspects existing supports, consults on site remediation projects and oversees installation on a regular basis.

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Custom F-Type Constant Spring Supports for Oil Refinery

November 6, 2015

Custom Constant Spring Supports for Oil Refinery

PT&P designed 100-F type constant spring supports for an oil refinery in Alabama. These custom constant spring supports are 32” x 12” x 23.5” and designed to support an operating load of 650 lb. with 14” of total travel. The constants are fabricated from A36 carbon steel and the coil is from 5160H alloy material. Standard load and travel testing were completed to ensure the quality and performance of these constants.

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Custom Variable Spring Supports Designed for a Furnace Application in an Ammonia Plant

October 19, 2015

Custom Variable Spring Supports Designed for a Furnace Application in an Ammonia Plant

Custom Variable Spring Supports Designed for a Furnace Application in an Ammonia Plant.

PT&P custom designed variable spring supports and hangers for a furnace application in an ammonia plant. The furnace springs are fabricated from carbon steel and painted with a red-oxide primer to help prevent corrosion. The spring supports are designed to support loads ranging from 400 lb. to 12,500 lb. Over 150 spring coils underwent calibration test prior to fabrication and insertion into the variable support housing to ensure variance of less than 5%.

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Compact Disc Spring Support Designed for a Heat Exchanger Application

September 21, 2015

Compact Disc Spring Support Designed for a Heat Exchanger Application1

Compact Disc Spring Support Designed for a Heat Exchanger Application

In this application, the heat exchanger (vertical vessel), has thermal movement of 1/4″, vertically.  As it expands thermally, the vessel lifts off its support structure and additional forces at the vessel’s lower nozzle are created.  With many heat exchangers, as well as other process equipment, the space between the support structure and equipment is restricted.  In this case, the space between the cantilever clamp attached to the vessel and the support structure is limited to only 5.1″.   This lack of space is unsuitable for placing the conventional spring supports which require more space.

The Compact Disc Spring support is designed to support large loads in small confined spaces with limited thermal movement (from 0 to 3/4″). By supporting the vessel with Disc Springs, the thermal movement is allowed (or relieved), which helps reduce the excessive loads and local stress on the nozzles.  This results in compliance with the ASME Piping and Vessel Codes. Due to a corrosive chemical plant environment, the two Compact Disc Spring supports were supplied with engineered 17-7PH Stainless Steel Belleville Disc Springs to combat corrosion.

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Cryogenic Pipe Supports Designed for a Hydrocarbon Production Facility

September 8, 2015

48” Dia. Cryogenic Pipe Supports Designed for a Light Hydrocarbon Production Facility

PT&P custom designed pre-insulated pipe supports with polyurethane insulation for cryogenic temperatures in a light hydrocarbon production facility in Texas. A total of 59 cold shoes were fabricated from A36 carbon steel with a hot-dipped galvanized finish. The cold shoe assemblies range in diameter from 24″-48″ and were designed to support loads ranging from 17,000 to 31,000 lb. Standard Q.C. and dimensional tests were performed prior to shipment.

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