Lightning Inspection Building 305.pdf

MULTIVARIABLE SYSTEMS TECH, LLC

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

867-713ON & TESTING CHECKLIST

Date: _______11/7/23________ Inspected and Tested By: __MVS (Jesse, Dustin, Lumuli)________

Structure/Building Identification: ________305 Hangar (building under construction)_________

Date Last Known Rainy Day: ____10 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.). ✔

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

See Notes

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.

See Notes

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.

See Notes

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

Bonding plates, lugs, cable to cable connectors etc.

N/A

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 Notes

READING LOCATIONS RESISTANCE READINGS

EAST SLOPE

Air Terminals on East side Each air terminal should have an additional line completing the loop. Recommend additional approximately 75’ of cable and 11 new plates.

Lead Pipe 0.98Ω

East 0.028Ω

East 2 0.022Ω

West 0.055Ω

West 2 0.019Ω

SW Corner Needs a plate and wire connecting down to coupler.

CENTER DOME

SE Corner 0.043Ω

S Red Lights 0.085Ω

S Center Red Lights 0.028Ω

S Red Lights 0.026Ω

SW Corner 0.022Ω

West 0.028Ω

W2 0.020Ω

W3 0.026Ω

NW Corner 0.026Ω

N Red Light 0.018Ω

N Red Light 2 0.028Ω

N Red Light 3 0.029Ω

N Antenna 0.022Ω

N Antenna 2 0.21Ω

NE Corner 0.099Ω

East 0.019Ω

East 2 Lo.01

Center Three air terminals have broken off and will need replaced along with 2 couplers and approximately 3’ of wire.

WEST SLOPE

Center Cable Recommend Splice for frayed cable

SE Corner 0.60Ω

East 0.042Ω

East 2 lo.01

Lead Pipe 0.036Ω

North 0.46Ω

Lead Pipe 2 0.78Ω

NW 0.024Ω

Lead Pipe 3 0.031

W 0.027Ω

W2 0.019Ω

Lead Pipe 0.033Ω

SW 0.014Ω

S Lead Pipe 0.013Ω

Center 3 Air Terminals were laying down. These were repaired.

HVAC Recommend addition of air terminal to HVAC Vent