HEADING PAGE - port of ploce authority * welcome

More documents

Recommendations

Info

ENVIRONMENTAL IMPACT STUDY Rn: 03-033 CONTAINER TERMINAL PLOCE PAGE: 10 On sections where damage of main conduit is possible or washing out of bedding (shallow sections, grade below elevation 1.00) the main conduit will be placed into protection concrete block or on concrete bedding. In the hydraulic analysis dimensioning will be made based on the maximum flow speed up to 4.0 m/s, and filling of profiles to maximum 90- 95 %. • SEWERAGE MANHOLES – manholes on the rout are foreseen of concrete, layout over-all size 1.00/1.00 (at smaller diameters – up to 500 mm), i.e. 1.20/1.20 (at bigger diameters). Walls will be of compacted concrete with additives to obtain watertight quality. At the bottom a halfround gutter will be made. Distance of manholes will depend on connection points, horizontal change of grade and change of diameter. Maximum installation distance will be 50 m. Covers will be of cast iron, 600/600 mm, bearing power to meet heavy duty traffic. Access to manhole is provided by installation of standard step irons. • GULLIES – direct gathering of storm waters (at places where channels are not foreseen) will be through gullies Φ 50 cm, with cast iron grilles 400/400 mm, bearing power for heavy duty traffic. Gullies will be installed in such way to collect waters from gathering surface of about 400 – 600 m2. Catch pit height is 100 cm, and gully connection to main conduit or manhole is foreseen with pipes diameter 200 mm, with connection pipe gradient 1-2 %. It is recommended that connection to manhole is above the tip of the discharge pipe. • SEPARATORS – foreseen gravity separators are used for separation and keeping on surface oily substances lighter then water, while mineral substances heavier then water polluted by oil products are disposed on bottom. It is foreseen to build reinforced concrete separators according to Swiss regulations (types B). Internal space of separators is divided in three parts: intake for waste water, middle and largest part for separation of water from floating (oily) substances and sediment contents, and outlet-overflow part where treated water is discharged into the drainage cannel. The middle part can be divided per height to the top part foreseen for retention of pollutants and substances lighter then water, middle part for flow of purified water towards discharge-overflow part and bottom part for sedimentation of substances heavier then water. Along the whole length of the top slab, covers are foreseen for purpose of maintenance, revision and cleaning. Separators will be built on appropriate location enabling access to vehicle for maintenance and emptying. After purification, storm waters are discharged into costal sea waters by outlet located at the waterfront edge. There are planned totally 2 separators with relevant catchment area of app. 6 and 8 ha. A relevant precipitation with intensity of 170 l/s/ha has been adopted corresponding to 1.25 annual return period and duration time (time of concentration) of 10 minutes. RIJEKAPROJEKT d.o.o.
ENVIRONMENTAL IMPACT STUDY Rn: 03-033 CONTAINER TERMINAL PLOCE PAGE: 10/1 It follows that the separator with catchment of app. 6 ha receives in totally app. 880 l/s and the separator with catchment area receives in totally app. 1250 l/s. The separators are foreseen as gravity separators with sedimentation and oil collection space with volume of 15 m3. Such solution conforms to water right conditions set forth by the institution «Hrvatske vode», item No. 6 of the said conditions. It is also practice in Croatia to use such separators within big traffic routes and handling areas. The flow velocity in the separator is limited to 0.3 m/s and oil retention is possible with submerged partition walls. It is important to note that the relevant intensity of 25 l/s/ha shall be let through such separators whereas bigger flows (with stronger intensities) shall be let through by-pass placed along the separator. Both waters shall be accepted on the separator outlet and they run through common pipe towards the recipient. The mentioned intensity of 25 l/s/ha is named, according to our regulations, as critical intensity in which process major contamination from the drained surface is collected together with water. Consequently, this intensity has to be let through the separator and the excessive amount through the overflow. The stated results from the fact that the precipitation hydrograph has usually a form of Gaussian curve, consequently every rain starts with the intensity «0» and intensifies to the maximum with subsequent trend to decline. Therefore, major contamination flushing from the surface develops when precipitation starts and this part of precipitation (up to 25 l/s/ha) flows through the separator. It is important to note that such separator must be maintained regularly, implying their monthly control and, if necessary, their emptying from oil and deposited material after performed control, at least twice a year. The separator has to be cleaned also after a possible incident – pouring out of bigger amount of waste or hazardous substance reaching the separator through the drainage system. Such drainage solution does not provide for retention space than floating substances (fats and oils) and deposited substances (sand, particles heavier than water) shall be collected in the separator within the operating chamber. RIJEKAPROJEKT d.o.o.
Page 1 and 2:
OBALA 4 OBALA 3 60 000 DWT 50 000 D
Page 5 and 6:
ENVIRONMENTAL IMPACT STUDY Rn: 03-0
Page 7 and 8:
Page 9 and 10:
Page 11 and 12:
Page 13 and 14:
Page 15 and 16:
Page 17 and 18:
Page 19 and 20:
Page 21 and 22:
A1. PURPOSE OF PROJECT CONSTRUCTION
Page 23 and 24:
A1. PURPOSE OF PROJECT CONSTRUCTION
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
Page 31 and 32:
Page 33 and 34:
Page 35 and 36:
Page 37 and 38:
Page 39 and 40:
Page 41:
SL. 4
Page 47 and 48:
Page 51 and 52:
Page 53 and 54:
Page 55 and 56:
Page 57 and 58:
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
Page 65 and 66:
Page 67 and 68:
HEIGHT OF SEA LEVEL (m) HEIGHT OF S
Page 69 and 70:
Page 71 and 72:
Page 73 and 74:
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
Page 83 and 84:
Page 85 and 86:
Page 87 and 88:
Page 89 and 90: ENVIRONMENTAL IMPACT STUDY Rn: 03-0
Page 129 and 130: m o r e m o r e QUAY (OBALA) 5 m o
Page 139: ENVIRONMENTAL IMPACT STUDY Rn: 03-0
Page 147 and 148: 60 000 DWT 50 000 DWT l=290,0m b=32
Page 191 and 192:
Page 193 and 194:
Page 195 and 196:
Page 197 and 198:
Page 199 and 200:
Page 201 and 202:
Page 203 and 204:
Page 205 and 206:
A B C D SLUICE (ZAPORNICA) SLUICE (
Page 207 and 208:
Page 209 and 210:
Page 211 and 212:
Page 213 and 214:
IRANA PLANIRANI 50 000 DWT l=290,0m
Page 215 and 216:
Page 217 and 218:
Page 219 and 220:
Page 221 and 222:
Page 223 and 224:
Page 225 and 226:
Page 227 and 228:
Page 229 and 230:
Page 231 and 232:
Page 233 and 234:
Page 235 and 236:
PLANIRANI PLANIRANA PLANIRANI OBALA
Page 237 and 238:
Page 239 and 240:
KV 2 PLS-02 KV 1 PL-02 SOK 1 PLS-01
Page 241 and 242:
Page 243 and 244:
Page 245 and 246:
show all

HEADING PAGE - port of ploce authority * welcome

Create successful ePaper yourself

Delete template?

Save as template?