PSI - Issue 60

ScienceDirect Available online at www.sciencedirect.com ScienceDirect StructuralIntegrity Procedia 00 (2023) 000–000 Available online at www.sciencedirect.com ScienceDirect StructuralIntegrity Procedia 00 (2023) 000–000 Available online at www.sciencedirect.com

www.elsevier.com/locate/pr ocedia www.elsevier.com/locate/pr ocedia

Procedia Structural Integrity 60 (2024) 700–708

Third International Conference on Structural Integrity 2023 (ICONS 2023)

Third International Conference on Structural Integrity 2023 (ICONS 2023) Sulphur attack on RCC wall of sulphur pit Harikrishna S Bharat Petroleum Corporation Ltd- Kochi Refinery, Ernakulam, Kerala, India-682302 Sulphur attack on RCC wall of sulphur pit Harikrishna S Bharat Petroleum Corporation Ltd- Kochi Refinery, Ernakulam, Kerala, India-682302

© 2024 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the ICONS 2023 Organizers Abstract: Sulphur attack is not a very popular damage mechanism in Reinformed Cement Concrete (RCC) structures. For Sulphur Recovery Units (SRU) of Hydrocarbon Processing Industry, it is not so. Here concrete pits are used for storing molten sulphur and hence concrete is exposed to corrosive materials. In BPCL- Kochi Refinery, during an internal inspection of a sulphur pit, bulging was noticed on the acid resistant brick lining. After removal of brick lining, sulphur attack was observed on RCC walls of pit. Full repair and refurbishment of the wall was carried out accordingly. As a case study approach, this paper deals with various aspects of sulphur attack on concrete including symptoms, damage patterns etc. It also includes materials & methodology adopted in refurbishment jobs. The paper shall impart awareness about sulphur attack damages to industry/technical experts. Abstract: Sulphur attack is not a very popular damage mechanism in Reinformed Cement Concrete (RCC) structures. For Sulphur Recovery Units (SRU) of Hydrocarbon Processing Industry, it is not so. Here concrete pits are used for storing molten sulphur and hence concrete is exposed to corrosive materials. In BPCL- Kochi Refinery, during an internal inspection of a sulphur pit, bulging was noticed on the acid resistant brick lining. After removal of brick lining, sulphur attack was observed on RCC walls of pit. Full repair and refurbishment of the wall was carried out accordingly. As a case study approach, this paper deals with various aspects of sulphur attack on concrete including symptoms, damage patterns etc. It also includes materials & methodology adopted in refurbishment jobs. The paper shall impart awareness about sulphur attack damages to industry/technical experts. Keywords: Concrete damage; Repair methodology; Sulphur induced corrosion

Keywords: Concrete damage; Repair methodology; Sulphur induced corrosion

------------------------ Author:- Harikrishna S Email:- harikrishnas@bharatpetroleum.in ------------------------ Author:- Harikrishna S Email:- harikrishnas@bharatpetroleum.in

2452-3216 © 2024 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the ICONS 2023 Organizers 10.1016/j.prostr.2024.05.087