BS ISO 26906:2015 – TC:2020 Edition
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Tracked Changes. Hydrometry. Fishpasses at flow measurement structures
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 128 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 75 | Foreword |
| 76 | Introduction |
| 77 | 1 Scope 2 Normative references 3 Terms and definitions |
| 78 | 4 Symbols |
| 80 | 5 Principle 6 Installation 6.1 Requirements for gauging structure and fishpass installations 6.1.1 Selection of site |
| 81 | 6.1.2 Installation conditions |
| 82 | 6.1.3 Upstream channel 6.1.4 Separate channel |
| 83 | 6.1.5 Downstream channel 6.1.6 Flow measurement and fishpass structures 6.1.7 Maintenance |
| 84 | 6.1.8 Measurement of head 6.2 Requirements specific to the fishpass 6.2.1 General |
| 85 | 6.2.2 Guidelines for basic parameters of fishpasses 6.2.3 Location and attraction flows 6.2.4 Downstream entry/exit to fishpass |
| 86 | 6.2.5 Upstream exit/entry from fishpass 7 Fishpass performance 7.1 General 7.1.1 Types 7.1.2 Fishpasses with interconnected pools 7.1.3 Fishpasses with continuous energy dissipation |
| 87 | 7.1.4 Calibration and discharge coefficient 7.2 Larinier super-active baffle fishpass with baffle sizes between 75 mm and 150 mm 7.2.1 Description |
| 88 | 7.2.2 The following features apply to the range of baffle sizes from 75 mm to 150 mm |
| 89 | 7.2.3 Limitations |
| 90 | 7.2.4 Modular flow calibration |
| 91 | 7.2.5 Modular limit 7.3 Pool-type fishpass with V-shaped overfalls 7.3.1 Description |
| 94 | 7.3.2 Determination of discharge under free flow conditions |
| 97 | 7.3.3 Modular limit |
| 98 | 7.3.4 Determination of discharge under submerged flow conditions |
| 99 | 7.3.5 Limitations 7.3.6 Scaling up to standard design 7.4 Dutch pool and orifice fishpass 7.4.1 Description |
| 101 | 7.4.2 Determination of discharge |
| 103 | 7.4.3 Scaling up the standard design 8 Computation of discharge 8.1 Principles |
| 104 | 8.2 Details 9 Uncertainties in flow determination 9.1 General |
| 105 | 9.2 Combining uncertainties |
| 106 | 9.3 Uncertainty in the discharge coefficient u*(CDe)68 for the fish-pass 9.4 Uncertainty in the effective head 9.5 Uncertainty budget 9.5.1 General |
| 107 | 9.5.2 Compound structures – sources of uncertainty 10 Example 10.1 Installation |
| 108 | 10.2 Flow conditions 10.3 Computation of discharge 10.3.1 Modularity 10.3.2 Flow over the flat-V weir |
| 109 | 10.3.3 Flow through the fish-pass 10.3.4 Total flow 10.3.5 Uncertainty in flow through the fish-pass |
| 110 | 10.3.6 Uncertainty in flow over the flat-V weir 10.3.7 Uncertainty in total flow 10.3.8 Reduction in overall uncertainty if second head gauge were to be installed upstream of the fish-pass |
| 111 | Annex A (informative) Introduction to measurement uncertainty |
| 120 | Annex B (informative) Performance guide for hydrometric equipment for use in technical standards |
| 124 | Bibliography |
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BS ISO 26906:2015
Hydrometry. Fishpasses at flow measurement structures Published By Publication Date Number of Pages BSI 2015…
