Lightning Inspection Building Hangar 308.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: ________308 Hangar___________________________________

Date Last Known Rainy Day: ____11 days prior__________ Humidity: ___1%______________________

A. Visual Inspection of Roof Top Components

Item Descriptions Notes/Correction

1 Visual inspections of the overall system condition.

Appearance (neat, dislodged, broken cables etc.).

Several loose cables, downed air terminals, and missing/damaged cables.

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

X

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

X

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

X

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

X Repaired and re-glued 7 air terminals. 2 are still missing pending roof repairs.

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.

3 Lines broken and need replaced, however, the roof is damaged (missing gutters, downspouts and soffit panels. Can not repair some LPS cables until the roof is repaired.

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

X

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

Reconnected and glued down.

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.

X

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

B. Visual Inspection Ground System:

C. Ground Resistance & Continuity Testing:

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

X

11 Remove and clean all cable connections including but not limited to; Bonding plates, lugs, cable to cable connectors etc.

X

Item Descriptions Notes/Correction

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

X

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

X

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.

X

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

3 Lines Missing. Need repairs but must repair damaged roof prior. (See photos)

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

X

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

X

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

3 Perform ground resistance on lightning protection grounding system.

See Additional Notes

D. Additional Notes (Building 308):

4 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 Attached

HANGER 308 READING

LOCATIONS:

RESISTENCE READINGS: NOTES:

EASTERN SLOPE (lower section):

SE Corner 0.040Ω

East 1 0.23Ω

NE Corner 0.24Ω

North 1 0.054Ω

NW Corner lo.01

SW Corner 2 0.039

CENTER DOME

SW Corner 0.064Ω

East 0.023Ω

NW Corner 0.077Ω

West 3 down lines missing with gutters that have fallen off.

Roof needs repairs before LPS can be repaired on this side.

Removed debris and repaired 7 air terminals. 2 are still missing where lines are gone.

WESTERN SLOPE (lower section)

South 1 0.13Ω

South 2 0.084Ω

East 1 0.11Ω

NE Corner 0.16Ω

NW Corner 0.079Ω

West 0.023Ω

SW Corner 0.077Ω