In many instances, natural gas produced from a particular well will have to travel a great distance to reach its point of use. The transportation system for natural gas consists of a complex network of pipelines, designed to quickly and efficiently transport natural gas from its origin, to areas of high natural gas demand. Transportation of natural gas is closely linked to its storage: There are three major types of pipelines along the transportation route:
Threaded joints may be permitted in the above ground stations or above ground section of SV stations only if a welded isolation valve is provided before it.
The number of threaded joints for station piping shall be to the extent minimum.
The threaded joints, after tightening, may be seal welded. The number of flanged joints for station piping for LPG shall be to the extent minimum. All tapping or opening shall be minimum 20 mm dia. The specification of Electrical equipments shall be in line with IS: All electrical equipment operating above volts shall have two separate and distinct connections to earth grids.
Separate earthing grid shall be provided for instrument and electrical system. Self conducting structures having metal thickness of more than 4. They shall, however, be connected to the earthing system, at least, at two points at the base.
SIS protects against the possibility of a process excursion developing into an incident and limits the excursion potential. Emergency Shutdown ESD iii. Alarm for hydrocarbon level in the tank iv. Online water analyzer may be installed at the originating pump station to detect any free water in the LPG being pumped.
LPG Pumps shall be provided with a high point vent to safe height minimum 3 meters above the pump in case of no pump shed or 1. Wherever pumps are installed in series, shall have check valve in the header isolating the suction and discharge piping connection.
The last pump in the series shall have check valve on the discharge piping. Additional common check valves shall be installed in the outlet header of the series pump configuration.
The suction and discharge side of the main pumps and booster pumps shall have actuated valves. Low suction pressure of booster and main pump. High discharge pressure at main pump.
Low discharge pressure trip on pump against pipe rupture to avoid liquid vaporization. High Casing temperature e. High bearing temperature f.
Tripping of main or booster pump in case of closure of suction or discharge MOVs. Pump shall operate in sequence with defined logic at starting and shut down.
Screwed pipe fittings shall not be used on any part of the fuel system piping or on the day service tank. Seamless tubing with stainless compression fittings are recommended.
If the flame arrestor or traps are installed on the exhaust, it shall comply with BS In addition to this, provision shall be made for shut down of the engine on high coolant or lubricating oil temperature. Electrical motor driven or engine driven air compressors shall be used.
Air receivers, air storage bottles and instrument air dryer units shall be provided.
The audio visual indication shall be provided at local panel and the pipeline control room. Operation of the emergency shutdown system shall also shutdown all Pumps, Prime movers, Control valves and delivery manifold valves except those that are necessary for protection of the equipment.
The discharge of TRVs shall be connected to blow down drain connected to a sump tank of appropriate capacity. These TRVs shall have isolation valves on both sides of safety valve. All TRV isolation valves upstream and downstream shall be lock open.
In this case, isolation valves on downstream of PSVs are not required. A weep hole with nipple at low point shall be provided on the vent pipe in order to drain the rain water which may get accumulated otherwise.Natural gas is seen by many as the future of American energy: a fuel that can provide energy independence and reduce greenhouse gas emissions in the process.
However, there has also been confusion about the climate implications of increased use of natural gas for electric power and transportation. Short title 1. These regulations may be cited as the Boiler, Pressure Vessel and Compressed Gas Regulations.. /96 s1. PART I DEFINITIONS AND APPLICATION.
Back to . LAS VEGASOct. 8, GE (NYSE: GE) and Peake Fuel Solutions, an affiliate of Chesapeake Energy Corporation (NYSE: CHK), today launched the CNG In A Box™ system, which allows easier adoption of compressed natural gas (CNG) refueling options for large- and small-scale retailers.
Nov 26, · There is an upward trend in the use of compressed natural gas cars in Europe. Italy is the main market with a fleet of approximately 1 million vehicles and 1, refuelling stations.
SEAT is committed to CNG as an efficient, profitable alternative. The drilling and extraction of natural gas from wells and its transportation in pipelines results in the leakage of methane, primary component of natural gas that is 34 times stronger than CO2 at trapping heat over a year period and 86 times stronger over 20 years.
The design of the station itself is a marvel, they said, because it incorporates 10 transportation fuels, including compressed natural gas (CNG) and liquefied natural gas (LNG), under a single canopy to achieve a one-stop fueling experience for the general public.