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UL 51
UL Standard for Safety Power-Operated Pumps and Bypass Valves for Anhydrous Ammonia, LP-Gas, and Propylene - Tenth Edition
Organization:
UL - UL
Year: 2013
Abstract: These requirements cover power-operated pumps and bypass valves for use in liquid transfer operations in non-refrigerated systems in installations for:
a) Anhydrous ammonia systems installed in accordance with the Safety Requirements for the Storage and Handling of Anhydrous Ammonia, CGA/GAS G-2.1 (ANSI K61.1);
b) Liquefied petroleum gas (LP-Gas) systems installed in accordance with the Liquefied Petroleum Gas Code, NFPA No. 58; and
c) Propylene systems.
These requirements do not cover:
a) Pumps or compressors intended for handling anhydrous ammonia or LP-Gas or propylene in the gaseous phase and
b) Pumps, compressors or bypass valves for anhydrous ammonia, LP-Gas, or propylene for use in chemical, petro-chemical, petroleum, or utility power plants; nor pipeline or marine terminals; nor related storage facilities at such plants or terminals.
Equipment covered by these requirements is for use with LP-Gas, propylene, or anhydrous ammonia as covered by the Standards and Codes and shall have a minimum service pressure rating.
Exception: A pump without an integral bypass valve with a higher differential pressure obtained in the Differential Pressure Test, Section 17, is permitted to have a lower minimum service pressure rating if it is marked in accordance with 25.2.
a) Anhydrous ammonia systems installed in accordance with the Safety Requirements for the Storage and Handling of Anhydrous Ammonia, CGA/GAS G-2.1 (ANSI K61.1);
b) Liquefied petroleum gas (LP-Gas) systems installed in accordance with the Liquefied Petroleum Gas Code, NFPA No. 58; and
c) Propylene systems.
These requirements do not cover:
a) Pumps or compressors intended for handling anhydrous ammonia or LP-Gas or propylene in the gaseous phase and
b) Pumps, compressors or bypass valves for anhydrous ammonia, LP-Gas, or propylene for use in chemical, petro-chemical, petroleum, or utility power plants; nor pipeline or marine terminals; nor related storage facilities at such plants or terminals.
Equipment covered by these requirements is for use with LP-Gas, propylene, or anhydrous ammonia as covered by the Standards and Codes and shall have a minimum service pressure rating.
Exception: A pump without an integral bypass valve with a higher differential pressure obtained in the Differential Pressure Test, Section 17, is permitted to have a lower minimum service pressure rating if it is marked in accordance with 25.2.
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| contributor author | UL - UL | |
| date accessioned | 2017-09-04T17:22:11Z | |
| date available | 2017-09-04T17:22:11Z | |
| date copyright | 05/31/2013 | |
| date issued | 2013 | |
| identifier other | ZVJNDFAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/145414 | |
| description abstract | These requirements cover power-operated pumps and bypass valves for use in liquid transfer operations in non-refrigerated systems in installations for: a) Anhydrous ammonia systems installed in accordance with the Safety Requirements for the Storage and Handling of Anhydrous Ammonia, CGA/GAS G-2.1 (ANSI K61.1); b) Liquefied petroleum gas (LP-Gas) systems installed in accordance with the Liquefied Petroleum Gas Code, NFPA No. 58; and c) Propylene systems. These requirements do not cover: a) Pumps or compressors intended for handling anhydrous ammonia or LP-Gas or propylene in the gaseous phase and b) Pumps, compressors or bypass valves for anhydrous ammonia, LP-Gas, or propylene for use in chemical, petro-chemical, petroleum, or utility power plants; nor pipeline or marine terminals; nor related storage facilities at such plants or terminals. Equipment covered by these requirements is for use with LP-Gas, propylene, or anhydrous ammonia as covered by the Standards and Codes and shall have a minimum service pressure rating. Exception: A pump without an integral bypass valve with a higher differential pressure obtained in the Differential Pressure Test, Section 17, is permitted to have a lower minimum service pressure rating if it is marked in accordance with 25.2. | |
| language | English | |
| title | UL 51 | num |
| title | UL Standard for Safety Power-Operated Pumps and Bypass Valves for Anhydrous Ammonia, LP-Gas, and Propylene - Tenth Edition | en |
| type | standard | |
| page | 28 | |
| status | Active | |
| tree | UL - UL:;2013 | |
| contenttype | fulltext |