Step 2: Be aware of the requirements of ASHRAE standard 15-2007 and applicable local building codes: • Each machinery room shall contain a 5. An unobstructed walking space not less than 36 inches (914 mm) in width and 80 inches (2032 mm) in height shall be maintained throughout, allowing free access to not less than two sides of moving machinery and approaching each stop valve. 120 0 obj endobj @LL;:����>4A��O�`�nbKb�y�����v�̐����[$�.��7oޔ��єݕ=�11Z-ȇ�C��V�2Ȃ��)��q?\M���D��{�R�iug `!-!S�F��7�x�H��,M��e焞��*�Sq��q]��#;��t���Q�&�����iJ_5�c����4��X���\�mF�R:��O��@�-��Xξ�y����'�#_�+� �&�� /F6 135 0 R Mechanical Room Ventilation as per ASHRAE standards. /R [ 0 6524 0 5040 ] /Resources << +o��ۺ�]~��/ X�ͧU�q2��_��e��� ��8 Ammonia Refrigeration. Some additional text has been added regarding the installation of equipment in a space which is neither an occupied space nor a machinery room. /XObject << Dating back to at least the 1967 Uniform Mechanical Code, refrigeration machinery rooms have been required to be configured with adequate ventilation in the event of a refrigerant release.While we have written previously about the current ventilation design, control, and testing requirements in … /F15 131 0 R Warning – When alarms are activated ammonia has been detected (sticker referencing the lights and sirens suggested outside of door of machinery room) Get everyone on the same page and streamline code research. This bulletin cuts through the jargon and provides a practical ventilation design criteria that will satisfy existing code requirements and improve machinery room safety. Sizing Exhaust System for Refrigerating Machinery Rooms July 20, 2005 Page 2 Page 2 • The refrigerant concentration rises until the refrigerant detector setpoint is reached. Centralised plant. A visual alarm should notify … 128 0 obj Machinery room — a room in which a refrigeration system is permanently installed and operated. >> /F4 144 0 R /D [ [ ] [ (Default) () ] ] endobj IIAR Ammonia Refrigeration Library, (1991, October). /Type /Page << >> • New compressor equipment identification requirement: minimum rotation speed for proper lubrication. /CAPT_Info << >> << /ProcSet [ /PDF /Text /ImageB ] Per Standard 15, the detector setpoint must be the TLV-TWA concentration for the 134 0 obj << /Type /FontDescriptor /FontName /TimesNewRomanPS-ItalicMT /FontBBox [ -250 -250 1120 1000 ] /Flags 98 /CapHeight 712 /Ascent 891 /Descent 216 /StemV 73 /ItalicAngle 0 /XHeight 498 /Leading 42 /AvgWidth 402 /MaxWidth 1309 >> endobj 135 0 obj << /Type /Font /Subtype /TrueType /BaseFont /TimesNewRomanPS-ItalicMT /FirstChar 0 /LastChar 255 /Encoding /WinAnsiEncoding /FontDescriptor 134 0 R /Widths [ 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 250 333 420 500 500 833 778 214 333 333 500 675 250 333 250 278 500 500 500 500 500 500 500 500 500 500 333 333 675 675 675 500 920 611 611 667 722 611 611 722 722 333 444 667 556 833 667 722 611 722 611 500 556 722 611 833 611 556 556 389 278 389 422 500 333 500 500 444 500 444 278 500 500 278 278 444 278 722 500 500 500 500 389 389 278 500 444 667 444 444 389 400 275 400 541 778 500 778 333 500 556 889 500 500 333 1000 500 333 944 778 556 778 778 333 333 556 556 350 500 889 333 980 389 333 667 778 389 556 250 389 500 500 500 500 275 500 333 760 276 500 675 333 760 500 400 549 300 300 333 576 523 250 333 300 310 500 750 750 750 500 611 611 611 611 611 611 889 667 611 611 611 611 333 333 333 333 722 667 722 722 722 722 722 675 722 722 722 722 722 556 611 500 500 500 500 500 500 500 667 444 444 444 444 444 278 278 278 278 500 500 500 500 500 500 500 549 500 500 500 500 500 444 500 444 ] >> endobj 136 0 obj << /Type /Font /Subtype /TrueType /BaseFont /ArialMT /FirstChar 0 /LastChar 255 /Encoding /WinAnsiEncoding /FontDescriptor 137 0 R /Widths [ 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 278 278 355 556 556 889 667 191 333 333 389 584 278 333 278 278 556 556 556 556 556 556 556 556 556 556 278 278 584 584 584 556 1015 667 667 722 722 667 611 778 722 278 500 667 556 833 722 778 667 778 722 667 611 722 667 944 667 667 611 278 278 278 469 556 333 556 556 500 556 556 278 556 556 222 222 500 222 833 556 556 556 556 333 500 278 556 500 722 500 500 500 334 260 334 584 750 556 750 222 556 333 1000 556 556 333 1000 667 333 1000 750 611 750 750 222 222 333 333 350 556 1000 333 1000 500 333 944 750 500 667 278 333 556 556 556 556 260 556 333 737 370 556 584 333 737 552 400 549 333 333 333 576 537 278 333 333 365 556 834 834 834 611 667 667 667 667 667 667 1000 722 667 667 667 667 278 278 278 278 722 722 778 778 778 778 778 584 778 722 722 722 722 667 667 611 556 556 556 556 556 556 889 500 556 556 556 556 278 278 278 278 556 556 556 556 556 556 556 549 611 556 556 556 556 500 556 500 ] >> endobj 137 0 obj << /Type /FontDescriptor /FontName /ArialMT /FontBBox [ -250 -250 1072 1000 ] /Flags 32 /CapHeight 724 /Ascent 905 /Descent 212 /StemV 80 /ItalicAngle 0 /XHeight 506 /Leading 33 /AvgWidth 441 /MaxWidth 1294 >> endobj 138 0 obj /Filter /FlateDecode This class is well suited for an individual looking at the most relevant best practices for design and safety of the ammonia refrigeration system and the engine room that houses this equipment. << Determine Amount of Refrigerant Permitted (B52 - 4.5.2) a. f@�R$x]�mC�A�s^.i�j�V�/%����]�. Then we need to consider the refrigeration equipment in the room which will account for around 1-10% of the total cooling load. >> >> 123 0 obj << /Type /Font /Subtype /TrueType /BaseFont /Arial-BoldItalicMT /FirstChar 0 /LastChar 255 /Encoding /WinAnsiEncoding /FontDescriptor 124 0 R /Widths [ 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 278 333 474 556 556 889 722 238 333 333 389 584 278 333 278 278 556 556 556 556 556 556 556 556 556 556 333 333 584 584 584 611 975 722 722 722 722 667 611 778 722 278 556 722 611 833 722 778 667 778 722 667 611 722 667 944 667 667 611 333 278 333 584 556 333 556 611 556 611 556 333 611 611 278 278 556 278 889 611 611 611 611 389 556 333 611 556 778 556 556 500 389 280 389 584 750 556 750 278 556 500 1000 556 556 333 1000 667 333 1000 750 611 750 750 278 278 500 500 350 556 1000 333 1000 556 333 944 750 500 667 278 333 556 556 556 556 280 556 333 737 370 556 584 333 737 552 400 549 333 333 333 576 556 278 333 333 365 556 834 834 834 611 722 722 722 722 722 722 1000 722 667 667 667 667 278 278 278 278 722 722 778 778 778 778 778 584 778 722 722 722 722 667 667 611 556 556 556 556 556 556 889 556 556 556 556 556 278 278 278 278 611 611 611 611 611 611 611 549 611 611 611 611 611 556 611 556 ] >> endobj 124 0 obj << /Type /FontDescriptor /FontName /Arial-BoldItalicMT /FontBBox [ -250 -250 1157 1000 ] /Flags 96 /CapHeight 724 /Ascent 905 /Descent 212 /StemV 153 /ItalicAngle 0 /XHeight 506 /Leading 33 /AvgWidth 479 /MaxWidth 1405 >> endobj 125 0 obj << /Type /Font /Subtype /TrueType /BaseFont /Arial-ItalicMT /FirstChar 0 /LastChar 255 /Encoding /WinAnsiEncoding /FontDescriptor 126 0 R /Widths [ 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 278 278 355 556 556 889 667 191 333 333 389 584 278 333 278 278 556 556 556 556 556 556 556 556 556 556 278 278 584 584 584 556 1015 667 667 722 722 667 611 778 722 278 500 667 556 833 722 778 667 778 722 667 611 722 667 944 667 667 611 278 278 278 469 556 333 556 556 500 556 556 278 556 556 222 222 500 222 833 556 556 556 556 333 500 278 556 500 722 500 500 500 334 260 334 584 750 556 750 222 556 333 1000 556 556 333 1000 667 333 1000 750 611 750 750 222 222 333 333 350 556 1000 333 1000 500 333 944 750 500 667 278 333 556 556 556 556 260 556 333 737 370 556 584 333 737 552 400 549 333 333 333 576 537 278 333 333 365 556 834 834 834 611 667 667 667 667 667 667 1000 722 667 667 667 667 278 278 278 278 722 722 778 778 778 778 778 584 778 722 722 722 722 667 667 611 556 556 556 556 556 556 889 500 556 556 556 556 278 278 278 278 556 556 556 556 556 556 556 549 611 556 556 556 556 500 556 500 ] >> endobj 126 0 obj << /Type /FontDescriptor /FontName /Arial-ItalicMT /FontBBox [ -250 -250 1082 1000 ] /Flags 96 /CapHeight 724 /Ascent 905 /Descent 212 /StemV 80 /ItalicAngle 0 /XHeight 506 /Leading 33 /AvgWidth 441 /MaxWidth 1343 >> endobj 127 0 obj These requirements apply for all refrigerants that contain ozone-depleting substances, e.g., << Highlight differences between any two building codes. 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