Indian Journal of Engineering & Materials Sciences

Open Access Open Access  Restricted Access Subscription Access

Sustainable Subsea Pressure Housing for Shallow Water Applications


Affiliations
1 National Institute of Ocean Technology, Ministry of Earth Sciences, Chennai 600 100, India
2 College of Engineering, Anna University, Chennai 600 100, India
 

The design of subsea pressure housing (SPH) with parameters such as hydrostatic external pressure, temperature and salinity prevailing in the marine environment requires a proper selection of materials. The housing is designed to accommodate the data acquisition electronics that is capable of handling a higher sampling rate and a larger capacity power pack for subsea ambient noise measurement mooring system operating at an ocean depth of 100 m in the shallow waters of the Indian coast. The scope of the housing design includes sustenance and operation of the system for a minimum of six months in an open ocean environment withstanding extreme events like cyclones and storm surges prevalent in the sea. The main aim of this paper is to present the work carried out on the design of SPH with three different materials such as high-strength stainless steel (SS316L), aluminium alloy (Al6061-T6) and titanium alloy (Ti-6Al-4V) for shallow-water applications. The design of SPH in a cylindrical shape with an internal diameter of 0.33m (330 mm) and length of 0.7m(700 mm) to withstand a pressure of 1MPa (10 bar) and hoop, axial and Von Mises stresses has been accomplished as per the American Society of Mechanical Engineers (ASME) code/standards. The buckling of cylindrical pressure housing and principle stresses were calculated through a finite element analysis (FEA) using ANSYS software.Further comparative studies on three materials mentioned above on the criteria of maximum stress, critical buckling pressure, formability, corrosive properties and cost of fabrication were carried out. The pressure housing with SS316L material is found to be an optimal choice for shallow-water applications in the open ocean. The subsea housing thus designed has been fabricated with SS316L and operated in the shallow waters of Goa successfully for a period of six months continuously.

Keywords

Hydrostatic external pressure, Shallow water, Subsea pressure housing.
User
Notifications
Font Size

  • ASME, Boiler and Pressure vessel code VIII (2) (ASME, New York) 2001.

  • Teong Beng Koay, John R Potter, Torbjorn Johnson and Pallyil Venugopalan. PANDA: A Self recovering shallow water acoustic logger .Oceans-2001conf (IEEE,Honolulu, USA) 2010

  • Andrew P F Little, Carl T F Ross, Daniel Short, Graham X Brown, J Ocean Tech,3 (2008) 76.

  • Khairul Izman Abdul Rahim, Abdul Rahim Othman, Mohd Rizal Arshad, Ind J Marine Sci, 38 (2009) 352.

  • Christopher Bassett, Jim Thomson, Brain Polagye, Characteristics of underwater ambient noise at a proposed tidal energy site in Puget sound, Oceans-2010 conf (IEEE, Seattle, USA) 2010

  • KhairulIzman Abdul Rahim,Abdul Rahim Othman, Mohd Rizal Arshad, Ind J Marine Sci, 40 (2011) 207.

  • Joseph H Haxel, Robert P Dziak,Haru Matsumoto, J AcoustSoc Am, 133 (2013) 2586. 8 Vincenzo Vullo, Circular Cylinder and Pressure Vessels.Vol.3 (Springer, Switzerland) 2014 9 Kamal A.M, El-Sayed T A, El- Butch A M A, Farghaly S H, Desalination 397 (2016) 126.

  • Breddermann K, Drescher P, Polzin C, Seitz H, Paschen M, J Ocean Eng, 113 (2016) 57. 11 Mahanty M M, Latha G, Sanjana MC, Thirunavukkarasu A, J Marine Tech Soc 51 (2017) 23-31.

  • Madhavan Nampoothiri S, Sajith Kumar P C, Design of Pressure Vessel for Undersea Applications, Int J Sci Tech and Eng 4 (2018) 70.

  • Indian Standard: 9975, Specification of O-rings Edition 1.2 (Bureau of Indian Standards, India) 1984

  • Dennis Moss, “Pressure vessel Design Manual", Gulf Professional Publishing, An imprint of Elsevier, (1987)

  • Berteaux H O, Buoy Engineering (John Wiley & sons, New York) 1986

  • ANSYS, Mechanical APDL verification manual Release 15.0 (ANSYS, Canonsburg, PA) 2013


Abstract Views: 94

PDF Views: 48




  • Sustainable Subsea Pressure Housing for Shallow Water Applications

Abstract Views: 94  |  PDF Views: 48

Authors

Thirunavukkarasu. A
National Institute of Ocean Technology, Ministry of Earth Sciences, Chennai 600 100, India
Shanmuga Sundaram K
College of Engineering, Anna University, Chennai 600 100, India
G. Latha
National Institute of Ocean Technology, Ministry of Earth Sciences, Chennai 600 100, India

Abstract


The design of subsea pressure housing (SPH) with parameters such as hydrostatic external pressure, temperature and salinity prevailing in the marine environment requires a proper selection of materials. The housing is designed to accommodate the data acquisition electronics that is capable of handling a higher sampling rate and a larger capacity power pack for subsea ambient noise measurement mooring system operating at an ocean depth of 100 m in the shallow waters of the Indian coast. The scope of the housing design includes sustenance and operation of the system for a minimum of six months in an open ocean environment withstanding extreme events like cyclones and storm surges prevalent in the sea. The main aim of this paper is to present the work carried out on the design of SPH with three different materials such as high-strength stainless steel (SS316L), aluminium alloy (Al6061-T6) and titanium alloy (Ti-6Al-4V) for shallow-water applications. The design of SPH in a cylindrical shape with an internal diameter of 0.33m (330 mm) and length of 0.7m(700 mm) to withstand a pressure of 1MPa (10 bar) and hoop, axial and Von Mises stresses has been accomplished as per the American Society of Mechanical Engineers (ASME) code/standards. The buckling of cylindrical pressure housing and principle stresses were calculated through a finite element analysis (FEA) using ANSYS software.Further comparative studies on three materials mentioned above on the criteria of maximum stress, critical buckling pressure, formability, corrosive properties and cost of fabrication were carried out. The pressure housing with SS316L material is found to be an optimal choice for shallow-water applications in the open ocean. The subsea housing thus designed has been fabricated with SS316L and operated in the shallow waters of Goa successfully for a period of six months continuously.

Keywords


Hydrostatic external pressure, Shallow water, Subsea pressure housing.

References