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ABSTRACT This paper studied coarse berth operability and operation downtime at the port in Eastern Thailand, due to metocean such as wind speed and significant wave height. The wave transformation is calculated by numerical wave model using Delft3D-WAVE (Open Source) for estimating the significant wave height at each port. The coarse operation downtimes are compared the wave model results with criteria of limiting environmental conditions according to PIANC 2014.
INTRODUCTION The level of wave action corresponds to cause issues with the safe berthing, mooring and operations downtime during severe weather conditions. The (un)loading of vessels depends on a large number of factors with including berthing arrangement, mooring arrangement size of vessel, number of mooring lines, mooring stiffness, port arrangement, characteristics of cargoes, (un)loading equipment, wave height, wave period, wave direction, water depth and also coincident wind and tidal currents. The operations downtime is affected to throughput capacity of the refinery, coal stock yard of coal-fired power plant and coal mine, which is a risk in port operation and effect to construction cost The criteria for operation of port in this study are based on limiting environmental operating conditions at quays and jetties, undertaken using the following coarse wind speed and significant wave height criteria as recommended in Guidelines MarCom Working Group report No. 121 – 2014, Harbour Approach Channels Design Guidelines (PIANC, 2014). The ports classified by the characteristics of cargoes, port arrangement, type of structures and vessel size. The criteria are tabulated in Table 1 as just short list for this study. The areas of study are selected ports at Ao Udom Bay, Si Racha district, Chonburi Province and ports at Rayong Sea as illustrated in Fig. 1.
The areas of study are economic zone of Eastern seaboard of Thailand that consists of Sriracha Harbour (SRH), Kerry Siam Seaport (KSSP), Thai Oil Jetty (TOP), PTT Jetty (PTT), IRPC Port (IRPC) and BLCP Coal Fired Power Plant Port (BLCP) at Map Ta Phut Port. The specific port locations are presented as the Universal Transverse Mercator coordinate system (WGS 84 Zone 47N) which is classified by characteristics of cargoes as tabulated in Table 2.
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