Gas rooms

H, br s, Wh 5 Hz). From these spectral data, indicating the presence of a hydroxymethyl group (83.70 and 4.29) and a carboxylate 1595 and 1575sh cm ). this zwitterionic alkaloid is regarded as the hydration product of daphnilactone-B (4). In fact, 32 was readily converted to a mixture of daphnilac-tone-B (4) and a methyl ester (33) on treatment with anhydrous MeOH containing HCl gas (room temp., 5 hr) followed by NaHCOj. 

In the gas room of the manometric drill hole, the two ends of the sealed hole bear the same amount of pressure when the gas pressure achieves balance. According to the law of mass conservation, when the gas pressure in the manometric drill hole reaches balance, the amount of compensate gas in the gas room is approximately equal to the amount of axial leakage of the sealed section. As is shown in the following formula ... 

From the expression of B, the value of B is inversely proportional to the length of sealed hole, the length of gas room m, and the manomentric time function, and in direct proportion to the radius of Manomentric drill hole the width b of non-elastic deformation around the drill hole b and the specific value of air permeabiUty coefficient From what affects the B value, we can... 

Pi Stable gas pressure value in gas room of manometric drill hole MPa... 

Blanket Gas Room Seal Legs Instrumentatioa Puiificatkm System Helium System Annular vi ... 

Fud Failure Blanket Gas Analyzer Blanket Gas Room Monitor Stack Tritium Monitors (STM)... 

For non-pyrophoric/detonable hazardous gases, two gas rooms were constructed. These rooms are accessed from the hazardous material area, but are distinct rooms opening off that area. This provides two levels of security as access to the hazardous material area is limited and a distinct key is needed to access the gas rooms. Each hazardous gas is located inside a gas cabinet within the gas room, with a maximum of two gas cylinders per cabinet. Cylinders sharing a single cabinet must be compatible gases and of like... 

All hazardous gases—gases rated 3 or higher on the NFPA scale in any category—are to be located in gas cabinets within the gas rooms. These rooms are maintained under a negative pressure relative to the hallway and outside world, and the gas cabinets are at negative pressure relative to the room. 

Flammable gas should be stored in a room cut off from the fabrication building by a pressure resistant wall having a four hour fire resistant rating. The wall should be blank and can be tied into the steel of the main stracture but not the gas room itself The wall should be capable of withstanding at least 100 psf. 

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