Lightning Inspection Building 306.pdf

MULTIVARIABLE SYSTEMS TECH, LLC

DUNS: 080122060 || FEIN: 81-0768594 || 3923 S. TAVISTOCK PL. || MERIDIAN, ID 83642 || Tel. (208)

867-713ON & TESTING CHECKLIST

Date: _______11/8/23________ Inspected and Tested By: __MVS (Jesse, Dustin, Lumuli)________

Structure/Building Identification: ________306 Hangar_________________________

Date Last Known Rainy Day: ____11 days__________ Humidity: ___1%______________________

A. Visual Inspection of Roof Top Components

B. Visual Inspection Ground System:

Item Descriptions Notes/Correction

1 Visual inspections of the overall system condition. Appearance (neat, dislodged, broken cables etc.). See Notes

2 Visually inspect all air terminals. Verify that size and quantity is sufficient per NFPA 780/UL96A requirements.

3 Verify that all air terminals (lightning rods) have been placed at 20’-0” maximum spacing around roof perimeter and/or roof ridges.

4 Verify that perimeter air terminals are within 2’-0” of the outside edge including corners of the structure.

5 Verify that mid-roof air terminals are spaced at maximum spacing of 50’-0” in accordance with NFPA 780.

6 Verify interconnecting mid-roof cables connecting mid-roof air terminals are properly spaced. Further verify 150’-0” maximum length of cross run conductor to the main perimeter or down conductor in accordance with

NFPA 780.

7 Verify that copper materials are not mounted or in contact with aluminum materials and vice-versa.

8 Verify that all conductors are fastened horizontally and vertically not more than 3’-0” maximum spacing.

9 Verify inductive metallic bodies located within 6’ 0” of lightning conductor or another bonded metal body shall be interconnected to the lightning conductor system, unless inherently connected.

10 Verify air terminals and bonding connectors are installed on rooftop, fans, ventilators. A/C units etc. in accordance with NFPA 780 UL96A.

11 Remove and clean all cable connections including but not limited to;

Bonding plates, lugs, cable to cable connectors etc.

Item Descriptions Notes/Correction

3923 S. TAVISTOCK PL. || MERIDIAN, ID 83642

C. Ground Resistance & Continuity Testing:

D. Additional Notes (If Necessary):

1 Locate all through roof connection to down runs or to structural steel. Visually inspect for damage and tightness.

2 Verify the quantity of down runs/connection to ground is adequate per NFPA 780 and UL96A based on the size of the structure.

3 If the connection is to steel, verify that connection is made in accordance with NFPA 780 and that the area under connection is clean of all paint, oil, grease etc.

4 Verify that spacing of down conductors at roof level are installed in accordance with NFPA 780 and UL96A (100’ on average).

5 Visually inspect connections to rebar/structural steel etc. for corrosion remove connections clean and reinstall. Replace if necessary.

6 Visually inspect ground rods and cable connections to ground rods. Remove and clean if necessary.

Item Descriptions Notes/Correction

1 Record the device readings for all tested points: See Additional Notes

2 Inspect and document status of surge protection - transient voltage surge suppression (TVSS) systems. Verify TVSS systems are installed in accordance to NEC 70 or other applicable codes or standards.

N/A

Perform ground resistance on lightning protection grounding system.

Performed, see notes.

3 Take additional photographic or video documentation of particular areas of the lightning protection system that needs further long term repair that may go beyond the scope of this inspection but needs attention.

See below.

READING LOCATIONS RESISTANCE READINGS

EAST SLOPE

SW 0.082Ω

W 0.029Ω

NW 0.52Ω Missing nut on wall connector

NE 0.015Ω

E 0.035Ω

E2 0.25Ω

SE 0.013Ω

CENTER DOME Reattached 3 full lines of cables that were dislodged from connectors. 2 air terminals re-glued.

SE 0.096Ω

SE2 0.062Ω

SE Antenna 0.015Ω

Red Lights 0.033Ω

S Red Lights 0.013Ω

SW Antenna 0.013Ω

SW Antenna 0.014Ω

HVAC 0.07Ω

West 0.13Ω

West 2 0.16Ω

West 3 0.14Ω

NW Red Lights 0.14Ω

NW Antenna 0.017Ω

N Red Lights 0.015Ω

NE Corner 2.2Ω

East 0.052Ω

E2 0.015Ω

E3 0.016Ω

E4 0.019Ω

WEST SLOPE

SE Corner 0.013Ω

East 0.019Ω

NE Corner 0.20Ω

N 42.0Ω

W 0.22Ω

W 0.017Ω

SW 0.059Ω

S 0.080Ω