Khamkeut Saen Oudom gold mining Operation
Wangkor Village, Khamkeut district, Bolikhamxai province, Laos PDR
project : Nampan Gold Plant 500 MTPH KSO-NP-TOR-M-005
Process water storage tanks
1. Type: Open top storage tank
2. Construction :
2.1 Daimeter 24.00 m.x 9.00 m.(h)
2.2 Quantity 3 units
2.3 Standard body : American Petroleum Institute API 620 or 650
2.4 Structural shapes : ASTM A 36
2.5 Material specifications :
2.5.1 Steel plates : ASTM A 283
2.5.2 Stairway, handrail and platform : SS 400
2.5.3 Pipes : ASTM A 53 or A 106
2.5.4 Flanges : ANSI 150
2.5.5 Bolts and nuts : ASTM A 193-B7
2.5.6 Flange gasket : Spiral wool 4.5 mm. (thickness)
2.5.7 Manhole gasket : Metal gasket 3.2 mm. (thickness)
2.5.8 Nozzle : ASTM A 53/ A 105
2.5.9 Filler : Graphite
2.6 Surface protection : refer 1575-ES-005
2.6.1 External surface : Paint system "E", final colour code N35 Light Grey
2.6.2 Internal surface : Paint system "D", final colour code Black
2.6.3 Under bottom plate : Paint system "D", final colour code Black
2.6.4 Stairway and handrail : Paint system "E", final colour code Y14 Golden Yellow
2.6.5 Stair step made form checker plate with anti slip nosing and 2 drain holes 8-10 mm.
3. Scope of work
Item Description Contractor KSO Remarks
Engineering duties
1 Design, calculation and specification x API 620
2 Cutting plan, GA Drawing and Shop drawing x
3 Welding Procedure Specification(WPS) x
4 Procedure Qualification Record (PQR) x
5 Welding Qualification Test(WOT) x
Material suppliey
6 Steel plate for Bottom plate, Annualar and Shell x
7 Structural steel for Stairway, handrail, plateform
and accessories x
8 Pipe for Nozzle neck x TBC
9 Flange and Fitting x TBC
10 Gasket, bolts and nuts x
11 Gate valve x
12 Level gauge x
13 Earth lugs x
14 Nameplate and bracket x API 620
Process Water Tank Dia.24 x 9.0(h)