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  1. MechProjectEng

    LPG Facility - NFPA 58 - Separation Distances

    Hello, I'm working on a large aboveground LPG bulk storage facility (2 x 50,000 Gal bullets), and would like to check the required separation distances between the storage facility elements and drains, sewers and pits, where gas could accumulate should we have any leaks. The only reference I...
  2. MechProjectEng

    Separation Distance Between Generator and Building

    Hi All, I am trying to establish seperation distance requirements between a Generator (outdoor) and a Building. The 2MVA generator has a 3000L diesel fuel day tank (790 US Gal). The tank is integral to the generator package and located beneath the engine. The building exterior wall does not...
  3. MechProjectEng

    Galling of Wear Rings on Centrifugal Pump

    Hi All, I have a problem of 'galling' of some centrifugal pump wear rings. The casing ring as well as the impeller ring is made from the same material, duplex stainless steel. In my experience stainless steels are particularly susceptible to galling, and I suspect that having both wear rings...
  4. MechProjectEng

    Equipment Damage due to Power Disturbance

    Hello all, Hoping for some advice: I work on a large industrial site, and a few weeks ago, we had a site wide power failure caused by a short circuit of one of our 11kV switchboards due to flooding. The site is served by 2 incoming 11kV feeders, and then distributed by 6 seperate 11kV rings...
  5. MechProjectEng

    Transformer Fire Protection

    Hi all, Hoping for some advice: We have a recently constructed substation. The substation is a stand alone and unmanned building consisting of 3 rooms: HV Switchgear Room, LV Switchgear Room and Transformer Room. Overal size of substation is 25m x 10m. Concrete frame building. Two walls of...
  6. MechProjectEng

    Paint Storage - Flammable Liquids Classification

    Hi All, We are designing a new paint storage facility. The facility will store a variety of paint products including thinners, laquers, resins, hardeners, etc. One of the first stages according to NFPA30 is to classify the commodity being stored. As we are not exactly sure what painting...
  7. MechProjectEng

    Fire Water Requirements for Vessels Under Construction

    Hello, I'm looking for guidance on fire water requirements for vessels: - Under construction in a hall - Under repair/retrofit in a hall - Under repair/retrofit in dry docks and while at lay up on a wharf I note that there is guidance in NFPA 312. However, does anyone know of any other similar...
  8. MechProjectEng

    NFPA101 Exit Discharge into Dead End Alley Way

    Hi All, Hoping for some advice: I have a building fire exit (industrial occupancy) and the exit discharge is into a dead-end alley way, which then leads to a public way. The alley way is approximately 50m long and 5m wide. The design has been rejected by our AHJ as the exit discharge is not...

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