Wednesday, December 12, 2007

Liturgi Turunnya Sang Dewi: Antara Ishtar dan Ereshkigal

Di awal segala hal, ketika matahari masih berdansa malu-malu dengan embun gandum dan langit belum belajar menyembunyikan amarahnya, dunia masih tahu: ada dua sisi dari cahaya—yang memikat dan yang terkubur. Ishtar tahu ini. Ia tahu bahwa kekuasaannya atas gairah dan peperangan tidaklah lengkap tanpa menapaki satu wilayah yang tidak bisa ditaklukkan: Kematian.

Ishtar, Inanna, Bintang Timur yang Terbit—ia, yang para raja agungkan, yang para pendeta persembahkan darah dan dupa—turun. Bukan dengan tentara. Bukan dengan mantra. Ia turun sendiri.

Gerbang Pertama: Mahkota
Penjaga bertanya, “Mengapa engkau datang?” Ishtar menjawab, “Untuk menghadiri pemakaman kekasihku.” Tapi ia berbohong. Ia datang untuk mengetahui siapa dirinya ketika segala simbol kekuasaan direnggut. Ia melepaskan mahkota: lambang otoritas, dan memasukinya.

Gerbang Kedua: Kalung dan Permata
Ia menanggalkan kilau keindahan. Tidak ada yang bersinar di Kur. Di sini, semua kemewahan hanya beban. Di sini, cinta tidak dihiasi. Cinta dikuliti.

Gerbang Ketiga sampai Keenam:
Gelang, sabuk, jubah... Setiap lapisan yang pernah membuatnya dewi menjadi kain usang di tangan penjaga Kur. Dan Ishtar tidak menangis. Ia menerima. Karena kejatuhan adalah syarat kelahiran makna.

Gerbang Ketujuh: Tubuh
Ia berdiri di hadapan Ereshkigal, ratu dari segala kesendirian, dalam wujud paling telanjang: tidak terlindung, tidak diagungkan, tidak dicintai. Ishtar, yang dahulu ditakuti, kini tergantung—seperti persembahan yang tidak diinginkan.

Tiga hari.
Tiga malam.
Tidak ada suara dari atas.
Kuil-kuil sunyi.
Tubuh-tubuh tidak bersatu.
Senjata-senjata tidak berbunyi.
Karena dunia menunggu: apakah cinta bisa kembali dari kematian?

Enki Mengirim Dua Wujud Tanpa Nama
Mereka tidak membawa pedang.
Tidak membawa syair.
Mereka membawa kesediaan untuk mendengarkan.

Di hadapan Ereshkigal yang sedang melahirkan—bukan anak, tapi kesakitan purba, mereka tidak menawarkan jawaban. Mereka menangis bersamanya.

Dan untuk pertama kalinya... sang ratu dunia bawah tidak sendiri.

Air Kehidupan Diberikan
Karena kesedihan yang dibagikan... adalah pintu pemulihan. Karena penderitaan yang didengar... melahirkan belas kasih. Dan karena belas kasih... bahkan kematian membuka gerbang.

Ishtar Kembali

Tapi bukan sebagai dewi yang sama. Ia membawa keretakan.
Ia membawa hening.
Ia membawa penglihatan baru—bahwa tidak ada cinta yang benar-benar kuat sebelum ia menatap wajah kematian dan tidak berpaling.

Dan inilah Liturginya:

Pada setiap malam yang tidak ada jawaban—kita adalah Ishtar. Pada setiap duka yang tak memiliki kata—kita adalah Ereshkigal.

Ketika kita menanggalkan mahkota ambisi, gelang keinginan, dan jubah kepastian... Kita akan tahu:

Bahwa di dasar segalanya, ada ruang kosong yang tidak membunuh—hanya menanti untuk didengarkan.

Dan dari ruang itulah, doa lahir. Bukan dengan suara. Tapi dengan keberanian untuk turun. Dan menatap kegelapan sebagai saudari


Ishtar's Descent: A Liturgy for the Silent

In the beginning of all things, when the sun still danced shyly with the dew on wheat and the sky had not yet learned to hide its fury, the world still knew: there were two faces to the light—the one that dazzled, and the one buried beneath. Ishtar knew this. She knew that her dominion over passion and war was incomplete without stepping into one domain that could not be conquered: Death.

Ishtar, Inanna, Rising Star of the East—she, exalted by kings, offered blood and incense by priests—descended. Not with an army. Not with spells. She descended alone.

First Gate: The Crown The guardian asked, “Why have you come?” Ishtar answered, “To attend the funeral of my beloved.” But she lied. She came to discover who she was when all symbols of power were stripped away. She removed her crown: the emblem of authority, and passed through.

Second Gate: Necklace and Jewels She shed the gleam of beauty. Nothing sparkles in Kur. Here, all luxury is burden. Here, love is not adorned. Love is flayed.

Gates Three through Six: Bracelets, belt, robe... Each layer that once made her a goddess became rags in the hands of the guardians of Kur. And Ishtar did not weep. She accepted. For the fall is the price of meaning’s birth.

Seventh Gate: The Body She stood before Ereshkigal, queen of all loneliness, in her most naked form: unshielded, unpraised, unloved. Ishtar, once feared, now hung—like an offering no one wanted.

Three days. Three nights. No word from above. Temples silent. Bodies unjoined. Weapons mute. Because the world waited: can love return from death?

Enki Sends Two Nameless Beings They carried no swords. No poems. They brought only the willingness to listen.

Before Ereshkigal in labor—not with child, but with ancient pain, they offered no answers. They wept with her.

And for the first time... the queen of the underworld was not alone.

The Waters of Life Are Given Because sorrow shared... is the door to restoration. Because suffering heard... births compassion. And through compassion... even death unbars its gates.

Ishtar Returns

But not as the same goddess. She carried a fracture. She carried silence. She carried a new vision—that no love is truly strong until it has stared into the face of death and did not look away.

And this is her Liturgy:

On every night without answers—we are Ishtar. In every grief that has no words—we are Ereshkigal.

When we strip away the crown of ambition, the bracelets of desire, the robe of certainty... We will know:

That at the bottom of all things, there is an empty space that does not kill—it only waits to be heard.

And from that space, prayer is born. Not with words. But with the courage to descend. And to face the dark as a sister.

Sunday, November 11, 2007

Maximize Return on Production Assets

Monitoring, management and optimization services can help minimize the risk of downtime
What are the hidden costs of your aging infrastructure? One big ticket item: Finding the right parts at the right time for preventive (or real-time) maintenance.

The first priority of any asset and plant optimization is having reliable spare parts on your storeroom shelves. But if you have the parts in stock – do you know how to find them?

That last part is critical to keeping machines up and running and reducing overall inventory carrying costs.

Success Through Inventory
If asset management is a struggle for you, you’re not alone. While managing aging equipment is an often overlooked component of a maintenance program, it shouldn’t be – because an estimated $65 billion worth of legacy assets are nearing the end of their useful life.

Can you benefit from better parts management?
Stay ahead of maintenance issues so you can minimize the risk of downtime as you modernize. A phased approach (identify, research, quantify and prioritize) can help you efficiently and effectively address obsolescence risk.

Wednesday, October 10, 2007

Justify your migration

How to calculate financial validation for a new automation system?
Does your process plant have an outdated distributed control system (DCS)? As your DCS reaches the end of its life, you know migration is a must – but first you need to justify the expense.

This justification typically will compare the cost of continued operation with your current DCS to the costs and benefits of migrating to a new automation system. It’s not a simple calculation – a lot of factors come together to comprise the total cost of ownership (TCO). To perform the most accurate analysis, every factor must be identified and quantified including:

  • Current maintenance and support costs
  • Quality of process control
  • New automation system costs and benefits

Excessive TCO for your existing DCS might spur migration, but the clincher is the quantification of new automation system costs and benefits.

Sunday, September 9, 2007

Analytics Really Do Matter

Driving Digital Transformation and the Smart Manufacturing Enterprise With a focus on today’s industrial enterprise, there’s a shift from metrics that matter to analytics that matter. This evolution marks an important milestone that aligns with how companies conduct their digital transformation journey.

At the heart of a digital enterprise is data and using it to improve enterprise-wide performance. One of the major tools that have to achieve this is analytics: Data and analytics architecture that helps manufacturers achieve digital transformation goals

Start at the Beginning: Architecture and Edge When you dig into this matter you’ll see that the Digital Transformation framework doesn’t differentiate between analytics running at the Edge from those running in the Cloud. Operational Architecture is primarily software-based, and applications and analytics can run anywhere in the corporate architecture that makes sense. This approach means you can build the Operational Architecture without concern for hardware limitations.

Recommendations for Analytics and Digital Transformation Digital transformation is a “must” for industrial organizations to survive and succeed.

Wednesday, August 8, 2007

VFD induced draft fan coupling failure

Torsional vibration problems in rotating machinery can be difficult to recognize. Unlike radial vibration which can be easily measured with readily available sensors, torsional vibration is more difficult to measure because it involves the twisting of shafts while the machine is rotating. It can typically only be measured with special devices such as strain gauges or torsional lasers. As a result, torsional problems typically go unnoticed until something fails.

Variable frequency drives (VFDs) are commonly used to vary the speed of various types of rotating machinery to efficiently control the capacity. Typical machinery applications include pumps, fans, blowers and compressors. However, VFDs can induce dynamic torques which can excite torsional natural frequencies, leading to undetected failures.

It is not likely further testing will help with the understanding of the failure mechanism. While it may be possible to make VFD configuration changes, the VFD manufacturer has not been helpful in the failure investigation. So, this might end up being a trial and error process. It is also possible to change to a different VFD manufacturer or model. However, changing to a torsionally resilient type coupling is a simple change and has a high chance of solving the problem. Based on this, the decision was made to change to a torsionally resilient type coupling. A couple of different coupling types are being evaluated. It will be necessary to do a torsional rotordynamic analysis as part of the retrofit.

VFDs can also cause torsional vibration problems. And, these can be difficult to analyze. In some cases, field testing is needed. Even though the testing led to inconclusive results, it did show that high dynamic torque was not the problem. This provides the confidence that installing a more tolerant coupling will solve the problem.

Patrick J. Smith

Saturday, July 7, 2007

Analisa termodinamika dan optimalisasi sistem produksi listrik dan panas (100%) PLTU 2x50MW

Analisa termodinamika dan optimalisasi sistem produksi listrik dan panas (100%) PLTU 2x50MW

State functions for water/steam calculations is: IAPWS Industrial Formulation 1997 (IAPWS-IF97) Thermodynamic analysis and optimization of systems for the production of electricity and heat base on TMCR TPRL15-20180612-RO1C

est GPHR: 2634.894824 kCal/kWH est NPHR: 3259.705921 kCal/kWH STHR aka NTHR aka HR: 2148.493239 kCal/kWH STHR aka NTHR aka HR: 8995.311494 kJ/kWH

Wednesday, June 6, 2007

Attack risk at the root

4 ways to address brand-critical safety, security and obsolescence challenges

Managing risk is ultimately about protecting your brand and reputation. Your approach to risk management should focus on where problems originate:

  • Equipment obsolescence:
    Modernizing production systems using the latest control and information technologies can help minimize unplanned downtime, support compliance with the latest standards and regulations, and play a major role in managing the other areas (quality, safety and security).

  • Quality:
    Harness the power of information buried within your operations to improve quality management and help confirm adherence to existing and emerging government regulations.

  • Safety:
    Safety must be addressed in three crucial areas – culture, compliance and capital. The upside: companies that experience fewer safety incidents have also been shown to have improved operational performance.

  • Security:
    As you embrace end-to-end connectivity across your facilities and enterprises, a comprehensive security approach helps protect people and intellectual property.

Saturday, May 5, 2007

Make the Most of Modernization

Smart manufacturing is digitizing and transforming nearly every aspect of industrial operations.

Plants and systems that previously operated separate from each other can be integrated with end-to-end connectivity. Machines that had little or no visibility into their performance can be monitored in real time. Workers who were reliant on manually collected data and tribal knowledge can make better decisions with production intelligence, online support and mobile collaboration.

Key to making all of this possible is a modern network architecture — one that not only meets your immediate needs, but also addresses potential future challenges and anticipates future innovations and growth.

Wednesday, April 4, 2007

Key Design and Deployment Considerations

For most organizations, network modernization involves bringing together IT and operations technology (OT) systems into a converged network architecture. This creates a common, connected and standardized infrastructure in which people, processes and technologies can be seamlessly connected.

No modernization project will be the same. However, keep in mind some general considerations to help optimize your network design and proactively address risks.

  1. Collaborate Upfront.

    Modernizing a network infrastructure shouldn’t be a go-it-alone venture for IT or OT. Rather, it needs to be a collaborative effort that involves functional teams from across organizations.

    Early and open dialogue can help minimize any cultural differences by getting buy-in from all stakeholders. Most importantly, however, upfront collaboration is crucial to identifying potential risks and addressing them before they develop into problems.

    Some areas where collaboration is key include:

    • Determining what connections are needed between the manufacturing execution system (MES) and enterprise business systems so everyone has access to the information they need.

    • Designing the network such that maintenance can be done without disrupting production.

    • Coordinating safety and security efforts to help identify and mitigate potential risks that could arise from security or safety incidents.

  2. Use Design and Deployment Resources.

    Industry guidance and resources are invaluable during your network modernization project.

    Introduces the concepts and technologies you need to make the transition, while also providing tips on system design, configuration, implementation and troubleshooting.

  3. Choose the Right Protocol

    One of the most critical decisions you will make in designing your network infrastructure is selecting the right industrial Ethernet protocol.

    Today, manufacturing and industrial companies are seeking to capitalize on the proliferation of connected smart devices that make up the Industrial Internet of Things (IIoT). IIoT devices use the internet protocol (IP), which provides the common language for different devices to coexist and interoperate on the same network.

    Adoption of IIoT technologies will be a defining characteristic of the industrial sector for the next several years. Research firm Gartner, Inc. forecasts that the number of connected things worldwide will reach 20.8 billion by 2020. The technologies are expected to help manufacturers generate nearly $3.9 trillion in value through increased revenues and lower costs in the coming years.

    One such IIoT technology is EtherNet/IP™, an industrial automation protocol that harnesses the power of IP, allowing for the harmonious coexistence of all IP-connected devices. This includes devices designed for industrial and commercial use. Proprietary networking technologies with multiple isolated networks can’t support this cross-device connectivity, unless you make additional investments in gateways, protocol converters or proprietary switching.

  4. Use a Holistic Security Approach

    According to a recent report from BDO USA, 92% of manufacturers cited cybersecurity concerns in their 2016 SEC disclosures this year. What’s more, the U.S. Department of Homeland Security has reported that basic cybersecurity practices in many industrial organizations are “an afterthought or significantly less than needed.”

    Industrial organizations cannot ignore the fact that more connection points in a modern industrial IP network architecture also bring greater security risks.

    No single security product, technology or methodology can be expected to contain today’s massive threat landscape on its own. A security-through-obscurity approach is no longer sufficient. Instead, you need a holistic security approach to help protect your people, operations, intellectual property and other assets.

    Your industrial security program should start with a security assessment to identify risk areas and potential threats. From there, plan to deploy a defense-in-depth (DiD) security approach that establishes multiple layers of defense.

  5. Plan for the Future

    The infrastructure life cycle in the industrial automation space is typically between 15 and 20 years. However, can you imagine in 20 years what your operations will look like or how you will be using information given all the innovation that’s occurring today?

    This is why it’s important that your industrial network infrastructure addresses your current needs while also anticipating those of tomorrow.

    You may someday decide to adopt virtualization, for example, which can cut the cost of acquiring, deploying and maintaining servers. But it also increases the amount and type of traffic on an industrial network. As a result, your network infrastructure should be segmented into different virtual LANs to create smaller zones. You also will need an industrial demilitarized zone (IDMZ) with servers that can access the industrial zone.

    Likewise, incorporating remote access into your operations will require that your network architecture support video and other collaboration tools. Integrating mobile devices will require that the network supports tablet authentication and encryption.

    Workforce changes also should be considered. A modern industrial IP network infrastructure combined with a smart production approach will have a significant impact on your workers. It will require IT and OT professionals to have a full understanding of the converged environment, and will reshape roles for those responsible for developing and overseeing it.

Saturday, March 3, 2007

Power

Power is the rate doing work, which equals energy per time. Energy is thus required to produce power. We need energy to run power plants to generate electricity. We need power to run our appliances, and heat our homes. Without energy we would not have electricity. The units of power are watts, joules per second, and horsepower, where;

1 Watt= 1 joule per second
1 Kilowatt= 1,000 Watts
1 Megawatt= 1,000 kilowatts
= 1 horsepower

Electricity is the most convenient and versatile form of energy. Demand for it, therefore, has been growing at a rate faster than other forms of energy. Power industry too has recorded a phenomenal rate of growth both in terms of its volume and technological sophistication over the last few decades. Electricity plays a crucial role in both industrial and agricultural sectors and, therefore, consumption of electricity in the country is an indicator of productivity and growth. In view of this, power development has been given high-priority in development programme.

Friday, February 2, 2007

Manual and Automatic

In process control, the term "mode" is used in two contexts:

  • Control modes. These are the proportional, integral, and derivative modes.

  • Operational modes. These are manual and automatic modes.

As illustrated in Figure above, the significance of the automatic/manual selection is as follows

  • Manual. The value for the controller output is specified by the process operator. The PID calculations are not performed. This mode is sometimes called "open loop" as the loop is broken at the auto/manual switch within the controller.

  • Automatic (or just "auto" ). The value for the controller output is the result of the PID calculations being performed for the purpose of automatic control. This mode is sometimes called "closed loop".

On switching the mode from manual to automatic, a smooth transition called "bumpless transfer" is desired; specifically, the value of the controller output the instant after the switch is to be the same as the value of the controller output just prior to the switch. This approach requires that the PID control equation be properly initialized or "balanced".

Monday, January 1, 2007

Classical mechanics is an approximation of quantum mechanics

The main difference between newtonian mechanics and quantum mechanics lies in the way it describes them. In classical mechanics, the future of the particle has been determined by:

  1. the initial position,
  2. initial momentum as well as,
  3. forces acting on the particle.

In the macroscopic world, this quantity can all be determined by a sufficient boiler to obtain a newton mechanics prediction that matches the observation