Standards Respecting Pipeline Crossings Under Railways. TC E 1. 0, June 2. Note To access the Portable Document Format PDF version you must have a PDF reader installed. If you do not already have such a reader, there are numerous PDF readers available for free download or for purchase on the Internet. Scope. 1. 1 These standards may be known as the Pipeline Crossing Standards. These standards are intended to ensure that pipeline crossings under Railways are installed, renewed and maintained in a safe manner. Control Train Components Specializing in museum quality model railroad CTC components and engineering. In railway signalling, a token is a physical object which a train driver is required to have or see before entering onto a particular section of single track. Caltrain Standard Specifications 201101 September 30, 2011 BALLAST AND WALKWAY AGGREGATE SECTION 20110 BALLAST AND WALKWAY AGGREGATE PART 1 GENERAL. TCRM 2008 5 SECTION 1 INTRODUCTION This Manual presents the technical criteria to be followed by Tenants, and their Architectural and Engineering consultants, for. These standards apply to Railway Companies subject to the jurisdiction of the Minister of Transport pursuant to the Railway Safety Act. General Applications and Exclusions. Pipeline Installation Procedures shall be in strict conformance with all Federal, Provincial and local safety regulations. These standards do not include overhead cable crossings, overhead pipeline crossings, and underground cable crossings. These standards do not apply to any pipe installed under a railway right of way prior to the date of approval of these standards, unless the pipeline crossing is to be reconstructed. General Conditions. No person shall commence the installation of any pipe under a railway without. Appendix A and. No person shall commence the repair, maintenance or removal of any pipe under a railway without obtaining a written approval from the railway company that owns, operates or has control of the railway. Every owner of a pipe installed under a railway, shall at all times maintain the pipe in good working order and condition, so that. Requirements for Pipelines Crossing under Railways General. For oil and gas pipelines crossing under railways, the requirements of C. S. A. Standard Z6. Section 5 herein. For steam, water, sewer or other non flammable substance pipelines crossing under railways, the requirements of Section 6 shall apply. The term Engineer used herein means the Chief Engineer of the railway company or his authorized representative. General Railway design loading applicable to all pipelines crossing under railways shall be Coopers E8. C. S. A. Standard Z6. The use of optional limits states design processes under C. S. A. Standard Z6. TCE52_diagram2.png' alt='Arema Manual For Railway Engineering Part 2' title='Arema Manual For Railway Engineering Part 2' />Requirements for Oil and Gas Pipelines under Railways. Amend C. S. A. Standard Z6. Clause 4. 7 Cover and Clearance Requirements as follows. Table 4. 8 Minimum Cover and Clearance Requirements In the case of oil and gas, and hazardous gas pipelines crossing under railways, Table 4. Table 4. 8 Minimum Cover and Clearance Requirements1 Minimum cover for buried pipelines, cm measured to top of carrier or casing pipe, as applicable. Minimum Cover and Clearance Requirements. Location. Type of Pipeline. Class Location. Normal Excavation. Rock excavation requiring blasting or removal by comparable means. Crossings of railway rights of way below base of railAll tracks. Cased. Flammable or hazardousgas or liquid. Uncased. Flammable or hazardousgas or liquid. Crossings of railway rights of way below bottom of ditches or ground surface. Cased. Flammable or hazardousgas or liquid. Uncased. Flammable or hazardousgas or liquid. Railway rights of way for cased or uncased buried longitudinal pipelines. Between 7. 62cm and 1. Flammable or hazardousgas or liquid. Greater than 1. 52. Flammable or hazardousgas or liquid. Non flammable gas or liquid products which, from their nature or pressure, might cause damage or endanger the lives, well being and health of people, or the environment, if escaping on or in the vicinity of railway property. Within 7 metres of centre of outside rail, measured at right angles to the centre line of the track. On portions of the right of way where carrier or casing pipe is not directly eneath any track. Amend C. S. A. Standard Z6. Clause 4. 7. 1 as follows. Add to end of Clause 4. For oil and gas pipelines crossing under railways, minimum cover requirements shall be in accordance with Table 4. C. S. A. Z6. 62 9. For any proposed pipeline crossing physically unable to meet the minimum cover requirements specified in Table 4. Engineer to use such methods. Amend C. S. A. Standard Z6. Add as a new Clause 4. Pipe installation near railway bridges and buildings the following. Pipelines carrying flammable or hazardous gas or liquids under railways shall not be placed within a culvert, under railway bridges nor closer than 1. Engineer. Add to Clause 1. Emergency response procedures shall be developed by the applicant to handle a situation in which a pipeline leak or railroad derailment or incident may jeopardize the integrity of the pipeline. Blank Hex Map Download. Local conditions shall be considered when developing these procedures. Add to Clause 1. 0. Oil and gas pipeline crossings shall be prominently identified where pipelines enter and exit railway right of way, approximately on the limits thereof, by signs in a language or languages appropriate to the region in which the sign is located. Such signs shall meet the requirements of C. S. A. Standard Z6. Additional signage will be required by the Engineer where the above signs are not readily visible from the track. Add as a new Clause 4. Emergency Shutoff Valves the following. For oil and gas pipelines, accessible emergency shutoff valves shall be located each side of the railway within effective distances as mutually agreed to by the Engineer and the pipeline company. These valves shall be marked with signs for identification. Where pipelines are provided with automatic control stations andor valves that are remotely operated, no emergency shutoff valves are required at the crossing. Add as a new Clause 4. Longitudinal installations the following. Longitudinal oil and gas pipelines on the railway right of way shall be located as far as possible from any track. They shall not be within 7. Engineer every 1. In exceptional situations, where it is not physically possible to locate the pipeline beyond 7. Engineer. 5. 4 Amend C. S. A. Standard Z6. Table 4. 9 Least Nominal Wall Thickness for Steel Casing Pipe in Cased Crossings and Carrier Pipe in Uncased Crossings as follows. All least nominal wall thicknesses for steel casing pipe in cased crossings and steel carrier pipe in uncased crossings shall be as shown in Table 4. Add new Notes under Table 4. When steel casing pipe or carrier pipe is installed under a railway without benefit of a protective coating or is not cathodically protected, the least nominal wall thickness shown in Table 4. Steel casing or carrier pipe installed under a railway shall have a specified minimum yield strength of 2. Mpa or greater. 5. Amend C. S. A. Standard Z6. Clause 4. 8. 3 Crossings of Roads and Railways as follows. Add new item to Clause 4. Cased Crossings. h Casing pipe and joints under railways shall be of leakproof construction capable of withstanding railway loadings specified herein, and shall be of steel unless otherwise indicated herein, or as approved by the Engineer. Replace C. S. A Standard Z6. Clause 1. 2. 4. 6 with the following. Polyethylene carrier pipe may be used in pipeline systems for the transportation of gaseous hydrocarbons under railways if. The design pressure does not exceed 7. Pa. The carrier pipe is made from polyethylene materials permitted by C. S. A. Standard CANCSA B1. R1. 99. 8, and subsequent revisions. The outside diameter of the carrier pipe is not greater than 1. The polyethylene carrier pipe within the entire limits of the railway right of way, is encased in a steel casing pipe meeting the requirements of C. S. A Standard Z6. Replace C. S. A. Standard Z6. Clause 1. 5. 4. 5 with the following. Aluminum pipe is not acceptable for use in pipeline crossings under railways. Requirements for Steam, Water, Sewer and Other Non Flammable Substance Pipelines under Railways. Carrier and Casing Pipe Requirements. Pipelines carrying steam, water other than oilfield steam and water, sewer, and other non flammable or non hazardous substances under railways shall be encased in a larger pipe or conduit called the casing pipe.