Abstract: Thermopile-based detection and monitoring/control systems are described, in applications such as inferring concentration of a multicomponent gas by sensing a tracer gas therein, utilizing fiber optic cables to provide multiple sensing paths in a cell, utilizing a modulated IR source switched in on/off cycles, verifying chemical reagent identities, and sensing of effluent following discharge from a contamination removal 8 element or cold trap. A thermopile infrared (TPIR) detector of highly compact character is described for such applications, and permits monitoring of species that may be problematic or otherwise deleterious in such environments. In one implementation, light source modulation and signal processing techniques are employed to improve signal to noise ratio and minimize calibration and complexity of the TPIR detector.

Abstract: A fluid storage and dispensing vessel having associated therewith a colorimetric member that is effective to change color in exposure to leakage of a gas contained in the vessel. The colorimetric member may be constituted by a film, e.g., of a shrink-wrap character, that contains or is otherwise associated with a colorimetric agent undergoing color change in exposure to fluid leaking from the vessel. Such shrink-wrap film may be applied to a portion of the vessel susceptible to leakage, or alternatively to the entire vessel, so that the film is colorimetrically effective to indicate the occurrence of a leakage event by visually perceptible change of color.

Abstract: A chemical storage and dispensing vessel having associated therewith a colorimetric member that is effective to change color in exposure to leakage of a gas contained in the vessel. The colorimetric member may be constituted by a film, e.g., of a shrink-wrap character, that contains or is otherwise associated with a calorimetric agent undergoing color change in exposure to fluid leaking from the vessel. Such shrink-wrap film may be applied to a portion of the vessel susceptible to leakage, or alternatively to the entire vessel, so that the film is calorimetrically effective to indicate the occurrence of a leakage event by visually perceptible change of color.

Abstract: A gas-using facility including a portable dry scrubber system and/or over-pressure control arrangement. The portable dry scrubber system is of a unitary modular form, accommodating transport and ready set-up, take-down, and redeployment in the process facility. The over-pressure control arrangement provides capability for release of over-pressure gas from a compressed gas storage vessel during an over-pressure event, e.g., overheating of a compressed gas cylinder during a semiconductor foundry fire, while avoiding the bulk release of the entire vessel contents that occurs when conventional pressure relief devices are employed.

Abstract: A dry scrubbing system for treatment of effluent from an upstream effluent-generating process. The dry scrubbing system accommodates operation in a process window involving substantial variation in process conditions, e.g., flow rate and/or concentration, of scrubbable gas species in the effluent. Multiple scrubbing media are utilized in the dry scrubbing system, each optimal in a regime of the operating window, and together ensuring at least a predetermined level of removal of scrubbable gas species over the entire operating window. In a specific aspect, gaseous phosphorus in the effluent is abated by use of potassium hydroxide as an active abatement agent.

Abstract: An apparatus and process for abating at least one acid or hydride gas component or by-product thereof, from an effluent stream deriving from a semiconductor manufacturing process, comprising, a first sorbent bed material having a high capacity sorbent affinity for the acid or hydride gas component, a second and discreet sorbent bed material having a high capture rate sorbent affinity for the same gas component, and a flow path joining the process in gas flow communication with the sorbent bed materials such that effluent is flowed through the sorbent beds, to reduce the acid or hydride gas component. The first sorbent bed material preferably comprises basic copper carbonate and the second sorbent bed preferably comprises at least one of, CuO, AgO, CoO, CO3O4, ZnO, MnO2 and mixtures thereof.

Abstract: A windowed chamber, e.g., a semiconductor manufacturing process chamber such as a scrubber, deposition chamber, thermal reactor, or the like, including a port with a radiation-transmissive window therein. Interiorly disposed within the chamber is (i) a disposable film on an interior surface of the window and/or (ii) a colorimetric medium disposed in viewable relationship to the window, so that a colorimetric change is perceivable through the window, e.g., visually or by optical sensing device, when the colorimetric medium is exposed to target gas species. Also disclosed is a gas detection article including a polymeric material that is colorimetrically responsive to the presence of at least one target gas species, in exposure thereto.