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ATTACHMENT C 1484 Minnesota State Fire Code. 1485 3. Maintenance.The required fire-resistance rating of fire-resistance-rated construction, 1486 including walls, firestops, shaft enclosures, partitions, smoke barriers, floors, fire- 1487 resistive coatings and sprayed fire-resistant materials applied to structural members 1488 and joint systems, shall be maintained. Such elements shall be visually inspected 1489 annually by the owner and repaired, restored or replaced where damaged, altered, 1490 breached or penetrated. Records of inspections and repairs shall be maintained. Where 1491 concealed, such elements shall not be required to be visually inspected by the owner 1492 unless the concealed space is accessible by the removal or movement of a panel, 1493 access door, ceiling tile or entry to the space. Openings made therein for the passage 1494 of pipes, electrical conduit, wires, ducts, air transfer and any other reason shall be 1495 protected with approved methods capable of resisting the passage of smoke and fire. 1496 Openings through fire-resistance-rated assemblies shall be protected by self-or 1497 automatic-closing doors of approved construction meeting the fire protection 1498 requirements for the assembly. 1499 a. Fire blocking and draft stopping. Required fire blocking and draft stopping in 1500 combustible concealed spaces shall be maintained to provide continuity and 1501 integrity of the construction. 1502 b. Smoke barriers and smoke partitions. Required smoke barriers and 1503 smoke partitions shall be maintained to prevent the passage of smoke. 1504 Openings protected with approved smoke barrier doors or smoke dampers shall 1505 be maintained in accordance with NFPA 105. 1506 c. Fire walls, fire barriers, and fire partitions. Required fire walls, fire barriers 1507 and fire partitions shall be maintained to prevent the passage of fire. Openings 1508 protected with approved doors or fire dampers shall be maintained in 1509 accordance with NFPA 80. 1510 4. Opening protectives. Opening protectives shall be maintained in an operative 1511 condition in accordance with NFPA 80. The application of field-applied labels 1512 associated with the maintenance of opening protectives shall follow the requirements 1513 of the approved third-party certification organization accredited for listing the 1514 opening protective. Fire doors and smoke barrier doors shall not be blocked or 1515 obstructed, or otherwise made inoperable. Fusible links shall be replaced whenever 1516 fused or damaged. Fire door assemblies shall not be modified. Opening protectives. 1517 Required opening protectives shall be maintained in an operative condition. All fire 1518 and smokestop doors shall be maintained in operable condition. Fire doors and smoke 1519 barrier doors shall not be blocked or obstructed or otherwise made inoperable. 1520 a. Signs. Where required by the code official, a sign shall be permanently 1521 displayed on or near each fire door in letters not less than 1 inch (25 mm) high 1522 to read as follows: 1523 a.1. For doors designed to be kept normally open: FIRE DOOR - DO 1524 NOT BLOCK. 1525 a.2. For doors designed to be kept normally closed: FIRE DOOR - 1526 KEEP CLOSED. 1527 b. Hold-open devices and closers. Hold-open devices and automatic door closers 1528 shall be maintained. During the period that such a device is out of service for 1529 repairs, the door it operates shall remain in the closed position 34