Invitation of quotation Notice for Tank mounted double membrane gas storage dome for Akurdi 30 MLD ISBR STP

Providing and Supplying, Erection and Commissioning for following : Double membrane gas storage facility on digester top mounted principle, without bottom membrane, complete with supporting belt structure and filing-level meter of following specifications: - useable volume 300 m³ operating pressure 3,5 mbar membrane tank diameter 14.80 m or 15m membrane tank height above tank 3,5 m diameter at anchoring 14.80 m or 15m tank outer-diameter 14.80 m tank height above foundation 8.0 + 0.9 m (refer drawing enclosed) max. gas temperature 55 °C max. gas production 250 m³/h max. gas withdrawal 250 m³/h anchor forces under an angle of 53,1° 6,5 kN/m consisting of:

1. One external membrane made of double-sided PVC-lined polyester material, UV and microbial resistant, abrasion resistant, made from welded fabric cuts, short-term tensile strength approx. 4000 N/5 cm, total weight approx. 900 g/m², colour grey. Material tests: Colour fastness test acc. to DIN EN ISO 105-B04; light fastness better than 7 (1 = worst value; 8 = best value). Repeated bending test acc. to DIN 53359, grade 0 (scale 0 – 4; 0 = no damage). Cold resistance acc. to DIN 53361, grade 0 (scale 0 – 4; 0 = no damage). Flame-resistant acc. to DIN 4102 class B1. Detailed Quotation Noticed Has Been Attached