PTP-2 160 C-Type variable spring support assemblies were designed and fabricated for an oil sands mine in Canada. The variables are 8″-12″ diameter, 16″ to 32-1/2″ overall length, and designed for an operating load of 5590 lb. with an upwards travel of 0.787″. The variables were fabricated from carbon steel with a hot-dipped galvanized finish and standard load and travel testing was completed prior to shipment.
This PTP-100 Type-G constant spring support is 96″ long by 40″ high and will support a 12,818 lb. load. It has an actual travel of 0.3″ and total travel of 1-1/2″. The G-type constant is comprised of two standard constant spring housing sub-assemblies joined together with an intermediate bridge assembly. The bridge assembly is customized to handle up to 26,000 lb. of hydro load. The G-type assembly allows for use in applications with limited space. Special identification tags were installed in addition to PT&P’s standard name plates per the customer’s request. Standard testing was performed and witnessed by an outside inspector prior to shipment.
Subject: Constant Spring Supports Design and Application Webinar
** Webinar is worth 1 PDH Credit for TX Professional Engineers
Date: Thursday, February 14th, 2013
This Webinar will focus on the different types of constant spring supports. Learn about the special features available, in addition to the design of a constant support. View how the different cam/coil configurations produce a unique response to an applied load. Discover the step by step process used to size a spring for your application. Learn about the different attachments, testing, and installation and maintenance procedures. View examples of failed supports provided by our Field Service Division and learn why they failed and how to prevent it. Gain knowledge of the valuable tips used when deciding to adjust or replace a constant spring support, as well as shutdown and isolation procedures.
The featured presenter, Jerry Godina has over 13 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.
These variable spring hanger and pipe clamp assemblies were custom designed for pipes ranging from 6″ to 20″ diameters at a co-generation plant in Canada. The spring can, threaded rods, weldless eyenuts, welded beam attachments and Fig. 80 pipe clamps were fabricated from hot-dipped galvanized carbon steel. The assemblies are capable of an overall load of 10,790 lb. with a total travel of 1/2″. A total of 21 spring hanger and clamp assemblies underwent standard load and travel testing.
Variable Spring Support Design, Size Selection, Installation & Maintenance Webinar
This Webinar will focus on the different types of variable spring supports and big ton variable spring supports. Learn about the special features available, in addition to the design of a variable support. View how the different coil configurations produce a unique response to an applied load and see how a spring assembly is loaded. Discover the basic steps in selecting a hanger design and the step by step process used to size a spring for your application. Learn about the different attachments, testing, and installation and maintenance procedures. View examples of failed supports provided by our Field Service Division and learn why they failed and how to prevent it. Gain knowledge of the valuable tips used when deciding to replace or re-calibrate a variable spring support, as well as adjustments, shutdown and isolation procedures.
PT&P custom designed C-type constant spring supports for an oil refinery in the Virgin Islands. They are fabricated entirely from 304 stainless steel to support piping in a highly corrosive environment. The design loads are 7,000 lb., 9,500 lb., and 11,000 lb. with movements of 2-1/2″ and 3″. The constants measure 29″ L x 22″ W x 20″ H. Standard load and travel testing was conducted prior to shipment.
View the recording at: http://info.pipingtech.com/webinar-beginners/
This webinar series was created to explain the basic principles of different types of pipe supports in the simplest way possible. It is geared towards “non-engineers” who want to have a better understanding of pipe supports. This particular presentation will give you a brief introduction to pipe supports and will then solely concentrate on constant and variable spring supports. It will explain the various designs, applications, and details of each support using simple terms and a lot of visual aids. The presentation will conclude with general guidelines of the maintenance and ordering process of constants and variables.
Over 40 constant spring supports were custom designed to support production pipes in an oil refinery. This picture shows a Fig. 200 U-Type constant spring support.
This picture shows a Fig. 100 B-Type constant spring support.
The constants range in size from 22″ to 30″ in height, 35″ to 85″ in length, and 12″ to 31″ in width. Their load capacities range from 1,800 lb. to 20,800 lb. with a vertical movement ranging from 7″ to 11-1/2″. All constants were fabricated from A-36 carbon steel and painted with a 3-coat paint system. Each constant went through standard load and travel testing per MSS Standards prior to shipment.
These variable spring hangers were designed for a 10″ pipe line in a solar electric generating system. All assemblies were fabricated from A-36 carbon steel with a hot-dipped galvanize finish. The picture on the left shows a structural steel assembly supporting a PTP-1 variable spring and a Fig.80 heavy 3-bolt clamp designed for a 3,789 lb. load. The picture on the right shows two PTP-2 variable spring hangers welded to a structural steel beam designed for a 675 lb. load. Each pipe hanger assembly went through standard load and travel testing prior to shipping.
Join us for this Webinar focusing on the unique design aspects of pipe supports and expansion joints operating in furnace applications. See how these non-standard designs impact the overall construction and fabrication processes. Learn the differences between standard supports and those specifically used in furnace applications. View the in-depth testing processes and learn what to watch for during inspection and maintenance intervals.