SAES-L-650 PDF – Construction of Nonmetallic Piping in Hydrocarbon

This article is about SAES-L-650 which is about Construction of Nonmetallic Piping in Hydrocarbon and Water Injection Systems and download SAES-L-460 PDF for piping and mechanical engineers, supervisors and project managers. This is saudi aramco standard based on international codes and standards and useful for piping and mechanical engineering knowledge to get job as engineers, QC Supervisors and QC managers, Engineering managers and technicians.

SAES-L-650 PDF Download

SAES-L-650

Construction of Nonmetallic Piping in Hydrocarbon

SAES-L-650 is a standard that provides requirements for the installation, inspection, and testing of Reinforced Thermosetting Resins (RTR) pipe and pipelines. It specifically applies to their use in flowlines, test lines, and water injection systems. The standard applies to both buried piping systems and, with prior approval, above ground piping systems.

For above ground piping systems to be covered by this standard, approval is required from the Manager of the Consulting Services Department and the Manager of the Loss Prevention Department. The standard applies to both high-pressure piping systems (MAOP ≥ 500 psi) and low-pressure piping systems (MAOP < 500 psi).

However, it’s important to note that certain services are excluded from the scope of this standard. In-plant piping systems, as well as flowlines, testlines, and water injection systems located outside of class 1 locations, are not covered by SAES-L-620. Additionally, the design of potable water systems, fire and raw combined water systems, irrigation water systems, well water systems, and gravity draining systems in Saudi Aramco facilities should follow the guidelines outlined in Saudi Aramco Plumbing and Utilities Standards.

It’s also worth mentioning that the design of oily water systems should comply with the requirements of SAES-L-610, a separate standard specifically addressing such systems.

General Construction Requirements

• Qualified personnel should carry out field installation, inspection, and pressure testing of the pipe. It’s important to ensure that individuals with the necessary expertise are involved in these activities.
• The pipe should be laid out and properly supported based on the Engineering Design, which includes engineering and construction drawings supported by design calculations. This ensures that the pipe is installed correctly and in accordance with the specified design.
• Field routing of fiberglass pipe should not be done without approval from the Design Engineer. This is to ensure that proper considerations are made and potential issues are addressed before the pipe is routed in the field.
• When bending the pipe to follow the contour of the installation area, it’s crucial to control the elastic bending within the limits specified by the pipe manufacturer. This helps prevent excessive stress or damage to the pipe during installation.
• Any deviations from the original design should be carefully reevaluated and requalified. This means that any changes or modifications made during the installation process must be reviewed and assessed to ensure they still meet the required standards and specifications. It’s important to maintain the integrity and safety of the pipeline system.

Installation of Buried Pipe

Soil Characteristics:

a) The different parts of a soil trench are shown in Appendix A, Figure A-1.
b) The width and depth of the soil trench should adhere to the design drawing.

Trenching:

a) Safety measures for trenching should comply with SAES-A-114.
b) The depth of the pipe should be determined by engineering design and documented in construction drawings.
c) Surveys should be conducted before excavation to ensure no other buried items that could interfere with or be damaged by the excavation.
d) If the trench is dug on the slopes of a slope, the slope should be less than 15 degrees. For steeper slopes or excavation in unstable soil, a geotechnical feasibility investigation is necessary to assess short-term and long-term stability.
e) Excavate the trench and provide necessary trench walls to ensure stability under working conditions.

f) If needed, dewater the trench before installing bedding, pipe, and backfill.
g) The trench should be clean, without organic materials, tree roots, or other debris.
h) Shoring sheeting may be used if the sides of the trench are unstable, placed between the native soil along the side of the trench and the trench fill.
i) The trench should be wide enough to accommodate the installation.
j) For multiple pipes in the same trench, there should be at least 1 meter of space between the pipes.
k) The slope of the pipe trench should be checked to ensure it does not exceed the permitted curvature of the pipe.

Foundation and Bedding:

a) Prefabricated pipe spools should include piping isometric drawings.
b) If necessary to achieve the required pipe depth and slope, a foundation may be installed at the bottom of the trench.
c) Bedding should be installed below the pipe and should have a minimum depth of 6 inches (150 mm).
d) The bedding material should be clean, free of rocks and fines, with particle sizes that meet the specified sieve requirements.
e) The bedding should be shaped to provide uniform support along the haunch (saddle) zone of the pipe, without any gaps between the bedding and the pipe.
f) If the pipe joints are larger than the pipe itself, the bedding profile should be shaped to accommodate the joint.
g) The haunch (saddle) zone under the pipe should be backfilled first.

Placement of Pipe in the Ditch:

a) Pipes with a diameter of 4 inches and smaller may be joined outside the ditch, lifted, and then placed into the ditch using wide straps (not chains).
b) When lifting the pipe, ensure that the curvature limit specified by the pipe and fitting manufacturer is not exceeded.
c) Larger pipes (> 4 inches) or heavy wall pipes should be joined inside the ditch.
d) Environmental conditions, such as sand, wind, and water, should be controlled to prevent water or foreign materials from entering and contaminating the interior of the pipe and the surface of the joints.

FAQs About SAES-L-650 PDF Download