Success Story of First Malaysia Flare Tips Decommissioning in Sarawak Offshore Field Platform

The project was for part production enhancement project which to cater for brownfield & greenfield project. To cater to the production (oil) increment for the brownfield project, the existing flare tips and separation system need to be upgraded with higher capacity. The inclusive project was upgrading existing. Part of the scope was decommissioning the existing flare tip and associated system, e.g., ignition panel and ignition pipe. The project will decommission the current flare tips and replaced it with new higher capacity flare tips with Low Pressure (LP) & High Pressure (HP) connection. The existing flare panel was a single-type ignition system. The existing flare tip had LP & HP tip with 8″ inch size; the weight for both tip was estimated at 300 kg. The concept selection was discussed on the suitable method to lifting down the decommissioning flare tip at the offshore platform. There were 2 suitable techniques selected at the initial of the concept selection. One was lifting down the decommissioning flare tip directly from flare boom to vessel. Another method was manual rigging of the flare tips from the flare boom to the lower deck. After several discussions and workshops, it was decided to proceed with manual rigging of the decommissioning flare tip to the safe deck area. The removal of the decommissioning flare tip was performed during turnaround. The total days for the overall activity of the decommissioning & installation of the new flare tip was 3 days, 2 days ahead from planned duration 5 days.

Deck Prisms and Vault Lights

Sometime around 1800 sailing ships started using large pieces of glass embedded in the deck to bring much-needed illumination to the “tween decks” region. It was a simple and elegant solution to a common problem. The pieces of glass used were too thick to fracture easily, and they made use of an otherwise unwanted by-product of the glass industry. But why do the reproductions that are now sold in gift stores feature what must have been a rather dangerous downward-protruding sharp point in something that was to be used in the notoriously low-ceilinged lower deck? How did these Deck Prisms develop, and what is their relationship to the similar Vault Lights used in cities around the same time?

Desain Kapal Tradisional Pinisi untuk Jaringan Tujuan Wisata Berkelanjutan: Studi Kasus Gugus Kepulauan Selayar

Kapal Pinisi merupakan salah satu alternatif moda trnasportasi yang dapat digunakan untuk mengeksplorasi potensi pariwisata di Takabonerate Kepulauan Selayar dan kemudian pendapatan pariwisata dapat menyumbang pendapatan negara. Dalam penelitian ini bertujuan untuk mendapatkan rute dan dimensi kapal berdasarkan survei kebutuhan pengguna dan karakteristik lokasi yang optimum menggunakan metode optimasi. Hasil analisis didapatkan bahwa Kapal Pinisi yang dirancang ditargetkan untuk segmen pasar dengan pendapatan sedang untuk wisatawan yang berusia kurang dari 30 tahun. Ukuran Kapal Pinisi yang optimum memiliki kapasitas 15 penumpang dengan dimensi LOA 37.14 meter, LPP 26.63 meter, LWL 26,96 meter, B 8.05 meter, T 2.65 meter, dan H 4.55 meter. Rute kapal dengan paket 5 hari 4 malam melewati rute Pelabuhan Rauf Rahman, Jinato, Lantigiang, Tinabo, Tinanja, Taka Lamungan, Tarupa Kecil, Latondu Kecil, dan kembali ke Pelabuhan Rauf Rahman. Dalam sekali roundtrip kapal memiliki waktu berlayar selama 98 jam dan waktu di pelabuhan pangkal selama 24.03 jam dengan jumlah 1 kapal. Harga jasa kapal wisata untuk penumpang penyelam sebesar 208 USD/malam-pax untuk lower deck dan 221 USD/malam-pax untuk main deck. Sedangkan harga jasa untuk penumpang non-penyelam sebesar 193 USD/malam-pax untuk lower deck dan 206 USD/malam-pax untuk main deck.

Particular skills: warrant officers in the Royal Navy, 1775–1815

Historians of the Royal Navy in the age of sail have focused their attention on two groups of men: the commissioned officers and the lower deck. Few have bothered to study the men in the middle: the warrant officers, whose particular skills were necessary on board. Masters, pursers, chaplains, and surgeons—the warrant officers of wardroom rank—straddled the civilian and military worlds. They therefore provide a unique window into both the Royal Navy’s command structure and the continuing significance and evolution of social status boundaries in Georgian Britain. This paper focuses on warrant officers during the half-decade following the battle of Trafalgar, when British manpower resources were stretched thinly and exhausted from more than a decade of operations. Between 1805 and 1808, the Admiralty enacted a series of reforms designed to alleviate some of these problems. To make a career as a warrant officer more attractive, the reforms granted surgeons uniforms, increased surgeons’, pursers’, and masters’ pay, and gave all of them a larger share of the prize money spoils. The reforms acknowledged, both implicitly and explicitly, that warrant officers sat uncomfortably in the naval hierarchy. They were crucial to the Navy’s operations, but they lacked the social prestige and promotion prospects of commissioned officers. The reforms suggest that naval administrators were finally beginning to recognize the significance and social standing of warrant officers.

Pay, Promotion, and Democratization

As soon as he was appointed First Lord of the Admiralty in 1911, Winston Churchill sought to buttress his credentials as a social reformer by improving conditions for sailors in the Navy and widening the social composition of the officer corps. This chapter examines his efforts towards both of these ends. It shows how he fought against the Treasury and his Cabinet colleagues to offer sailors their first meaningful pay rise in decades. It similarly catalogues the many schemes he introduced to entice people from a wider range of backgrounds, including sailors from the lower deck, to become naval officers. As with enhanced naval pay, this required him to persevere against entrenched interests, but as this chapter will show, his achievements in this area were considerable.

Stationary crossflow vortices near the leading edge of three-dimensional boundary layers: the role of non-parallelism and excitation by surface roughness

Non-parallelism, i.e. the effect of the slow variation of the boundary-layer flow in the chordwise and spanwise directions, in general produces a higher-order correction to the growth rate of instability modes. Here we investigate stationary crossflow vortices, which arise due to the instability of the three-dimensional boundary layer over a swept wing, focusing on a region near the leading edge where non-parallelism plays a leading-order role in their development. In this regime, the vortices align themselves with the local wall shear at leading order, and so have a marginally separated triple-deck structure, consisting of the inviscid main boundary layer, an upper deck and a viscous sublayer. We find that the streamwise (and spanwise) variations of both the base flow and the modal shape must be accounted for. An explicit expression for the growth rate is derived that shows a neutral point occurs in this regime, downstream of which non-parallelism has a stabilising effect. Stationary crossflow vortices thus have a viscous and non-parallel genesis near the leading edge. If an ‘effective pressure minimum’ occurs within this region then the growth rate becomes unbounded, and so the previous analysis is regularised within a localised region around it. A new instability is identified. The mode maintains its three-tiered structure, but the pressure perturbation now plays a passive role. Downstream, the instability evolves into a Cowley, Hocking & Tutty (Phys. Fluids, vol. 28, 1985, pp. 441–443) instability associated with a critical layer located in the lower deck. Finally, we consider the receptivity of the flow in the non-parallel regime: generation of stationary crossflow modes by arrays of chordwise-localised, spanwise-periodic surface roughness elements. The flow responds differently to different Fourier spectral content of the roughness, giving the lower deck a two-part structure. We find that roughness elements with sharper edges generate stronger modes. For roughness elements of fairly moderate height, the resulting nonlinear forcing leads to the so-called super-linearity of receptivity, namely, the amplitude of the generated crossflow mode deviates from the linear dependence on the roughness height even though the perturbation in the boundary layer remains linear.