Petrochemical installation

The difference between left and right should not exceed 0. The gap between the end face of the device shall not exceed 0. If there is no defect, the installation is deemed qualified. Petrochemical process pump installation requirements one: anti-corrosion measures. Because petrochemical pumps mainly transport petrochemical and other substances, some of which are relatively corrosive, so when installing petrochemical pumps, anti-corrosion must be adopted. If the petrochemical pump is installed outdoors, it is also necessary to consider whether the petrochemical pump will appear cold and brittle.

At this time, materials with better low temperature resistance must be selected. Petrochemical process pump installation requirements 2: explosion-proof measures. Due to the particularity of petrochemical pumps, it is very likely to be used in flammable and explosive areas.

Because the explosion area is graded, it must be used in areas with higher explosive levels. Use explosion-proof motors. For petrochemical pumps, regular inspections are necessary. For factories requiring a major overhaul every year, the continuous operation period of the pump should generally not be less than h.

In order to meet the requirement of overhaul every three years, API 10th edition stipulates that the continuous operation period of pumps for petroleum, petrochemical and natural gas industries is at least 3 years. The design life of petrochemical pumps is generally at least 10 years.

API 10th edition stipulates that the design life of centrifugal pumps for petroleum, petrochemical and natural gas industries is at least 20 years. The design, manufacture and inspection of petrochemical pumps should comply with relevant standards and specifications. The pump factory should guarantee the performance of the pump within the range of power supply voltage and frequency.

EN CN. Bilfinger has extensive knowledge in the design of steam generators, firing systems and water steam cycles including external piping and flue gas treatment. Based on our long-term experience we focus on increasing steam boiler efficiency, operational flexibility and availability, reduction of operational and maintenance costs and emissions. Bilfinger offers all services necessary for planning, engineering, procurement, fabrication and construction as well as commissioning and maintenance.

Our maintenance service and the related operational know-how is an added value that we deliver to our customers. Bilfinger offerings comprise many sections and units of process plant utilities such as heat exchange process units, piping systems, compressor stations, phase separation units, steam generators or tank farm and terminal design.

The service ranges from engineering design and manufacturing of components to turnkey installation, commissioning and maintenance. The services are provided by a single source with the highest quality at the lowest cost, while at the same time interfaces are kept to a minimum.

We also offer maintenance services. Bilfinger is one of the world's leading providers of steam piping systems. We fabricate special piping, steel structures and modular skids in our own workshops.

Services also include fabrication planning, quality control and inspection. Bilfinger is renowned for its special welding skills and can perform remote control orbital welding on piping systems with high wall thickness.

Bilfinger offers all services necessary for planning, engineering, procurement, fabrication and construction as well as commissioning and maintenance from a single source. Fiberglass tape is recommended for general purpose and for use on stainless steel surfaces and lower temperature Installations Only use Aluminum tape if called for In the design specification.

This Improves the heat transfer and increases the power output of the heating cable. Attach the heating cable to the pipe as shown In Figure 2. Guys, For your knowledge we summarize some top vendor heat tracing manuals for information and design. Like this: Like Loading Tags: Electrical Heat Tracing. If there is any concern for an application, an MC-HL cable may be a better choice for compliance with this requirement.

Within the confines of the hazardous area, one needs to be mindful of the NEC cable sealing requirements at the terminations. As with requirements for cable boundary seals, the language of the code can be confusing here as well. Consider a typical scenario of a 3-conductor plus ground Type MV cable run in a tray system terminating at a motor in a C1-D2 area. The cable sealing requirements are spelled out in NEC Article Compact stranding may minimize this but the potential to transmit gas through the strands in sufficient quantity to create an explosion hazard may exist.

At this point, applying cable seals to minimize passage of gas through the cable core aside from the strand interstices should be discussed. Typical MV cable data sheets will not state performance of cables with respect to these two modes of potential gas transmission.

In a practical sense, this prevents NEC Article Now consider NEC Article Most motor terminal boxes for C1-D2 rated motors are not explosion proof. The last part of this section also creates some confusion. It can be interpreted to require cable seals for essentially all multiconductor Type MV cables regardless of the enclosure rating.

Again, if possible, it is advisable to have a conversation with your AHJ to get an interpretation of this requirement as the writing of the Code leads to various opinions on this subject. This may even include no cable seal for cables longer than several hundred feet. Due to the cable run length and fillers in the cable core, some AHJs consider the cable to inherently minimize the passage of gas back to the non-classified area.

If it is deemed by the AHJ that passage of gas through the cable from the C1-D2 area must be addressed, the options available depend on what type of cable is being used. The objective is to minimize the passage of gas through the cable core. Hot or cold shrink termination kits on the individual phase conductors are installed to evenly distribute electrical stress and protect the exposed conductor insulation. While in practice, these may restrict the passage of gas through conductor core and interstices to some degree, manufacturers generally do not test or label their performance in hazardous area applications.

If there is any concern about passage through strand interstices, it is advisable to specify compact stranding on the MV cables.

To minimize passage of gas through the cable core if you are using an MC-HL cable, it is probably easiest to select a cable gland fitting listed for MC-HL cable that is sold with a compound applied inside the gland see Figure 5.

The purpose of the compound is to provide an explosion-proof seal similar to the commonly used conduit seals. But whether your terminal enclosure is explosion proof or not, the gland also serves to minimize the passage of gas through the cable core.

Figure 5: MC-HL cable with gland installed at a medium-voltage motor terminal box. If you are using a type MV cable, it gets a little more complicated. If you want to use a cable gland with an MV type cable, you will need to verify the gland is approved for this type of cable. Many are not. The other option is an explosion-proof conduit seal placed at the cable breakout. However, this approach is often challenging as well. Installation of a conduit sealing fitting on larger size conduits is often difficult, particularly in the congested area around the motor terminal box.

Removing the cable jacket and fillers at the seal fitting exposes the shields and insulation to possible damage. More so than low voltage tray cable, even minor damage to MV cable construction can lead to premature failure.