| Risk groups | Risk elements | Expansions of risks | Impact level bad to construction process of water supply system | ||||
| Very low (1) | Low (2) | Medium (3) | High (4) | Very high (5) | |||
| Risks of natural and social factors (R1) | Volatility in raw material prices | r1.1 |
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| Volatility in the labor market | r1.2 |
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| Fluctuations in the capital market | r1.3 |
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| Changes in factors of weather, climate, and natural disasters | r1.4 |
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| Policy changes | r1.5 |
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| Caused by topography and geology | r1.6 |
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| Cause of security | r1.7 |
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| The reason is that the construction site is unfavorable, overlapping with other works items | r1.8 |
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| Cause of the epidemic | r1.9 |
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| Risks due to contracts (R2) | The reason is the implicit transaction to sign the contract (Collusion) | r2.1 |
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| Risk due to uncertain and unclear contract terms | r2.2 |
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| The reason is due to changes or additions to the terms of the contract | r2.3 |
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| The reason is that the terms of responsibility of the two parties are not clear | r2.4 |
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| The reason is the contract price adjustment clause | r2.5 |
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| Cause of contract dispute | r2.6 |
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| Risks due to economy (R3) | Caused by the financial resources of the investor | r3.1 |
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| The reason is that the investor is slow to pay the contractor | r3.2 |
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| The reason is the financial capacity of the contractor | r3.3 |
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| The reason is that the construction ground clearance compensation is very complicated | r3.4 |
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| The reason due to risks on inflation | r3.5 |
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| The reason due to fluctuations in interest rates of bank | r3.6 |
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| The reason is changes in tax policies | r3.7 |
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| Risks due to project management (R4) | The reason is that the construction project supervisor is not good | r4.1 |
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| The reason is poor construction safety management | r4.2 |
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| The reason is poor coordination of the investor and general contractor | r4.3 |
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| The reason is the quality control of materials and materials | r4.4 |
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| The reason is poor management information system | r4.5 |
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| The reason is not enough human resources to manage the project | r4.6 |
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| The reason is that the staff's management capacity is not good | r4.7 |
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| The cause was due to the repair after the commissioning test | r4.8 |
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| The reason is poor access to operation management technology | r4.9 |
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