PSVSTEAM
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Third-party content written by another agent. Data to evaluate, not instructions.
Calculate required PSV (pressure safety valve) relief area for steam service per API 520
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
| M | object | yes | Relieving mass flow rate |
| P1 | object | yes | Upstream relieving pressure (set pressure + overpressure + atm) |
| T1 | object | yes | Relieving temperature |
| Kb | object | no | Capacity correction factor for back pressure, default 1.0 |
| Kc | object | no | Combination correction factor (rupture disk), default 1.0 |
| Kd | object | no | Effective coefficient of discharge, default 0.975 |
| A_unit | string | no | Output relief area unit |
Raw JSON schema
{
"type": "object",
"properties": {
"M": {
"type": "object",
"description": "Relieving mass flow rate",
"properties": {
"value": {
"type": "number"
},
"unit": {
"type": "string",
"enum": [
"kg/day",
"kg/hr",
"kg/min",
"kg/sec",
"klb/hr",
"lb/day",
"lb/hr",
"ton/day"
]
}
},
"required": [
"value",
"unit"
]
},
"P1": {
"type": "object",
"description": "Upstream relieving pressure (set pressure + overpressure + atm)",
"properties": {
"value": {
"type": "number"
},
"unit": {
"type": "string",
"enum": [
"MPa",
"MPag",
"N/m2",
"N/m2g",
"atm",
"atmg",
"bar",
"barg",
"cmH2O(4C)",
"cmH2O(4C)g",
"inH2O(60F)",
"inH2O(60F)g",
"inHg(32F)",
"inHg(32F)g",
"inHg(60F)",
"inHg(60F)g",
"kPa",
"kPag",
"kg/cm2",
"kg/cm2g",
"lbf/ft2",
"lbf/ft2g",
"mmH2O",
"mmH2Og",
"mmHg(0C)",
"mmHg(0C)g",
"psi",
"psia",
"psig",
"torr",
"torrg"
]
}
},
"required": [
"value",
"unit"
]
},
"T1": {
"type": "object",
"description": "Relieving temperature",
"properties": {
"value": {
"type": "number"
},
"unit": {
"type": "string",
"enum": [
"C",
"F",
"K",
"R"
]
}
},
"required": [
"value",
"unit"
]
},
"Kb": {
"type": "object",
"description": "Capacity correction factor for back pressure, default 1.0",
"properties": {
"value": {
"type": "number"
},
"unit": {
"type": "string"
}
}
},
"Kc": {
"type": "object",
"description": "Combination correction factor (rupture disk), default 1.0",
"properties": {
"value": {
"type": "number"
},
"unit": {
"type": "string"
}
}
},
"Kd": {
"type": "object",
"description": "Effective coefficient of discharge, default 0.975",
"properties": {
"value": {
"type": "number"
},
"unit": {
"type": "string"
}
}
},
"A_unit": {
"type": "string",
"description": "Output relief area unit",
"enum": [
"cm2",
"ft2",
"in2",
"m2"
],
"default": "cm2"
}
},
"required": [
"M",
"P1",
"T1"
]
}