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  low pressure PSV ÅäÃâ¹è°ü ¼³Ä¡ °ü·Ã ¹®ÀÇ
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¾È³çÇϽʴϱî.
 º¸Åë PSV°°Àº °æ¿ì ÈÄ´Ü ÅäÃâ¹è°üÀÇ ³ôÀ̸¦ HEADER º¸´Ù ³ôÀº°÷¿¡ ¼³Ä¡Çϵµ·Ï ¼³°è¸¦ ÁøÇàÇÕ´Ï´Ù. (KOSHA GUIDE¿¡ ÅäÃâ¹è°ü¿¡ À¯Ã¼Á¤Ã¼µÇ¾î¼­´Â ¾ÈµÈ´Ù ¶ó´Â ¹®±¸°¡ ÀÖ½À´Ï´Ù 11.2.(5))
 ÇÏÁö¸¸ SET PRESSURE°¡ ³·Àº (20 mbarg, 70 mbarg) PSV¿Í °°Àº °æ¿ì (breather valve¿Í °°ÀÌ ÀÛµ¿Çϳª ÈíÀÔÀº ÇÏÁö¾ÊÀ½)¿¡µµ À§¿Í °°Àº ³»¿ëÀ» Àû¿ëÇØ¾ß ÇÏ´ÂÁö ±Ã±ÝÇÕ´Ï´Ù.

PSV ¼³Ä¡À§Ä¡°¡ header ¾Æ·¡¶ó¼­ suction ¹è°üÀÇ ±æÀÌ°¡ ±æ¾î pressure dropÀÌ °É¸³´Ï´Ù. (¹ßÁÖó¿¡¼­ suction ¹è°ü »çÀÌÁ Å°¿ì°í ½Í¾îÇÏÁö¾Ê½À´Ï´Ù.)
°ü·ÃÇÏ¿© Âü°íÇÒ ÀÚ·á°¡ ÀÖÀ¸¸é ¾Ë·ÁÁÖ½Ã¸é °¨»çÇÏ°Ú½À´Ï´Ù

½ºÅ×Æijë Stefano   18-10-11 14:03
(1) PSV Discharge Piping Design Criteria:

PSV Valve Orifice Å©±â´Â ¹èÃâ½Ã Discharge À¯·®À» ¹èÃâÇÒ ¼ö ÀÖÀ» ÃÖ¼ÒÀÇ Å©±âº¸´Ù Ä¿¾ß ÇÏ°í, ¾Æ¿ï·¯ Discharge LineÀÇ ¹èÃâ°üÀº PSV°¡ ¹èÃâµÇ°í ÀÖÀ» ¶§ º¸È£µÇ´Â ±â±âÀÇ ¾Ð·ÂÀÌ ¼³°è±âÁØÄ¡¸¦ ³ÑÄ¡Áö ¾Êµµ·Ï ¹è°ü°æÀ» Á¤Çϵµ·Ï ±ÔÁ¤ÀÌ µÇ¾î ÀÖ½À´Ï´Ù.  (PSV °ü·Ã ¸ðµç ÆÇ´Ü ±âÁØÀº À̸¦ µû¶ó¾ß ÇÕ´Ï´Ù.)

Áú¹®ÀÇ (  )¼ÓÀÇ ³»¿ëÀº PSV ¹èÃâ½Ã ÀúÇ×ÀÌ °É¸®Áö ¾Êµµ·Ï Çϱâ À§ÇÑ ¼³¸í¿¡ ÇØ´çÇϴµ¥ PSV ¹èÃâ°ü¿¡ ¾×ÀÌ ´©ÀûµÇ¾î ÀÖÁö ¾Êµµ·Ï Ç϶ó´Â À̾߱âÀ̸ç ÅäÃâ°üÀÇ ³ôÀ̸¦ ¾ð±ÞÇÑ °ÍÀº ¾Æ´Õ´Ï´Ù. 

(2) Discharge Piping Drain:
Set Pressure°¡ ³·Àº °æ¿ì¿¡´Â ¹èÃâ°ü¿¡ ÀÀÃà¾×ÀÌ ³²¾ÆÀ־ ¾×ÁÖ ³ôÀÌ ¸¸À¸·Îµµ ½±°Ô Çã¿ë Over Pressure¸¦ ÃÊ°úÇÒ ¼ö Àֱ⠶§¹®¿¡  ¹èÃâ°üÀÇ DrainÀÌ ÇÊ¿äÇÏ´Ù´Â °ÍÀ» ÀǹÌÇÏ´Â °ÍÀ̶ó°í ºÁ¾ß ÇÕ´Ï´Ù.

(3)  <PSV ¼³Ä¡À§Ä¡°¡ header ¾Æ·¡¶ó¼­ suction ¹è°üÀÇ ±æÀÌ°¡ ±æ¾î pressure dropÀÌ ..>

1) PSV°¡ Header ¾Æ·¡¿¡ ¼³Ä¡µÇ¾î (PSV ¹èÃâ½Ã) Pressure DropÀÌ °É¸°´Ù¸é... Suction LineÀº ¹Ýµå½Ã Å°¿ö¾ß ÇÕ´Ï´Ù.
    (PSV ¹èÃâ½Ã Hydraulic CalculationÀ» ÇÊÇÏ¿© °á·ÐÁö¾î¾ß ÇÕ´Ï´Ù. Client³ª ¼³°èÀÚ ÀÓÀÇ·Î °áÁ¤Çؼ­´Â ¾ÈµË´Ï´Ù. ¼³°èÀÚ°¡ È®½ÇÇÑ °è»ê±Ù°Å¸¦ ¹ÙÅÁÀ¸·Î Clent¸¦ ¼³µæÇϵµ·Ï Çϼ¼¿ä.)
2) PSV Suction¿¡  ´©ÀûµÉ ¿ì·Á°¡ ÀÖ´Ù¸é PSV UpstreamÀ̶ó¸é º¸È£±â±âÃøÀ¸·Î ÀÀÃà¾×ÀÌ Èê·¯µé¾î¿Àµµ·Ï ÇؾßÇÏ°í,
3) PSV Discharge Valve°¡ ´ë±â ¹æÃâÀ̶ó°í Çصµ Dischage LineÀÇ Low Point Drain HoleÀ» µÎ¾î ÀÀÃà¾×À̳ª ºø¹° µîÀÌ µé¾îÀÖÁö ¾Êµµ·Ï ÇØ¾ß ÇÕ´Ï´Ù.
   

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