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One of the most dangerous situations in the operation of a boiler is that of a fuel explosion in the furnace. The photo above shows the complete devastation of a utility boiler.

Conditions have to be just right for an explosion to occur and when a boiler is properly operated, it is not possible for such an event to take place. The most common causes of a fuel explosion are:hrsg boiler

Fuel-rich mixtures - The danger of a fuel-rich mixture is that high concentrations of unburned fuel can build up. When this unburned fuel ignites, it can do so in a very rapid or explosive manner. Fuel-rich mixtures can occur any time that insufficient air is supplied for the amount of fuel being burned. Never add air to a dark smoky furnace. Trip the unit, purge thoroughly, then correct the problem. By adding air with a fire in the unit, you may develop an explosive mixture. While it is dangerous to have too rich a mixture, the reverse is not true. A lean mixture which results in more air than necessary, while not efficient, is not dangerous.

Poor atomization of oil - Just as fuel-rich mixtures could allow accumulation of unburned combustibles, any inventory of a combustible fuel in the furnace can result in an explosion. Boilers are blown up every year as a result of poor atomization of oil which results in incomplete combustion and can lead to unburned oil puddling on the floor of the furnace. To prevent this, the oil tips must be clean, the oil temperature must be correct, the oil viscosity must be in spec, and the atomizing steam (or air) pressure and fuel oil pressure must be properly adjusted.

Improper purge - Many of the explosions occur after a combustion problem which has resulted in a burner trip. Consider the following example: suppose that the oil tip becomes plugged, which disturbs the spray pattern, causing an unstable flame that results in a flame failure. The operator attempts to relight the burner without investigating the cause and during successive attempts to relight the burner, oil is sprayed into the furnace.

The oil on the hot furnace floor begins to volatize and release its combustible gases when the operator initiates another trial for ignition. The pilot then ignites the large inventory of unburned combustible gases in the furnace, which produces the explosion.

The drum level must be controlled to the limits specified by the boiler manufacturer. If the drum level does not stay within these limits, there may be water carryover. If the level exceeds the limits, boiler water carryover into the superheater or the turbine may cause damage resulting in extensive maintenance costs or outages of either the turbine or the boiler. If the level is low, overheating of the water wall tubes may cause tube ruptures and serious accidents, resulting in expensive repairs, downtime, and injury or death to personnel. A rupture or crack most commonly occurs where the tubes connect to the drum. Damage may be a result of numerous or repeated low drum level conditions where the water level is below the tube entry into the drum.Boiler Steam Drum

flow 1Some companies have had cracked or damaged water tubes as a result of time delayed trips or operators having a trip bypass button. When the drum level gets too low, the boiler must have a boiler trip interlock to prevent damage to the tubes and cracks in the tubes where they connect to the boiler drum. The water tubes may crack or break where they connect to the drum, or the tubes may rupture resulting in an explosion. The water tube damage may also result in water leakage and create problems with the drum level control. The water leakage will affect the drum level because not all the water going into the drum is producing steam.

Poor level control also has an effect on drum pressure control. The feedwater going into the drum is not as hot as the water in the drum. Adding feedwater too fast will result in a cooling effect in the boiler drum reducing drum pressure and causing boiler level shrinkage. This can be demonstrated by pouring tap water into a pan of boiling water.
Shrink and swell must be considered in determining the control strategy of a boiler. During a rapid increase in load, a severe increase in level may occur. Shrink and swell is a result of pressure changes in the drum changing water density. The water in the drum contains steam bubbles similar to when water is boiled in our homes. During a rapid increase in load, a severe rise in level may occur because of an increase in volume of the bubbles. This increased volume is the result of a drop in steam pressure from the load increase and the increase in steam generation from the greater firing rate to match the load increase (i.e., bubbles expand). If the level in the drum is too high at this time, it may result in water carryover into the superheater or the turbine. The firing rate cycle can result in drum pressure cycles. The drum pressure cycles will cause a change in drum level.
The firing rate change has an effect on drum level, but the most significant cause of shrink and swell is rapid changes in drum pressure expanding or shrinking the steam bubbles due to load changes. When there is a decrease in demand, the drum pressure increases and the firing rate changes, thus reducing the volume of the bubbles (i.e., bubbles get smaller). A sudden loss in load could result in high drum pressure causing shrinkage severe enough to trip the boiler on low level. A boiler trip at high firing rates creates a furnace implosion. If the implosion is severe enough, the boiler walls will be damaged due to high vacuum in the furnace.

This the shocking moment a man trying to push into a queue for limited edition Nike trainers was beaten up.

The Nike Air Jordan Rookie of the Year trainers were going on sale for an eye-watering £150 a pair but were being offered online for as much as 10 times the initial price.

People had been queing for housr to get thier hands on the rare shoes so when the man narged through a mob descnded on him with punches and kicks.

More than 500 people had gathered outside the Nike shop in at Chnagsha, Hunan province, China ahead of the trainers release.

The launch event has been peaceful as people queued from the early hours of the morning, but descended into violence when one impatient shopper tried to squeeze in.The footage shows him being repeatedly punched by a gang of hooded men, before they back off.

One of the shoppers, angered by the incident, explained: “It was chaos on the day, and he wasn't the only one trying to queue-jump, but he stood right next to the door."get Off White x Air,more order with big discount

Women’s Air Jordan 1 Retro High SOH Hydrogen Blue

Another must-have Air Jordan 1 Retro High. Made for the ladies, this women’s edition is a part of the “Season of Her” Collection. Sporting a premium suede upper with a satin toebox sitting atop a white midsole and blue translucent sole. An embroidered “Swoosh” on the sides and stitched-on “Wings” logos on the ankles finishes this pair off. Their release date was January 25th, 2018, where they were available at select Jordan Brand retailers worldwide. Priced at $160, they came exclusively in women’s sizes. If you’re a fan of the “Season of Her” Air Jordan 1 Retro High’s, you need this “Hydrogen Blue” pair in your collection. Especially if you can fit the size run. Want to sell a pair on StockX? List them up on the marketplace now. Looking to buy? You can do that online as well.buy Cheap Off White Shoes with best price

Boldenone Cypionate was synthetisized in an attempt to create a long-time inject able methandienone (dianabol), in reality boldenone acts nothing like methandrostenolone. It has a very long half-life, and can show up on a steroid test for up to 1.5 years, due to the long undecylenate ester attached to the parent steroid. Trace amounts of the drug can easily be detected for months after discontinued use.Boldenone cypionate powder
Boldenone cypionate is an ester of boldenone and is recommended as an aid for the treatment of debilitated horses when an improvement in weight, hair coat or general physical condition is desired.
Boldenone cypionate should be considered only as adjunctive therapy to other specific and supportive therapy for diseases, surgical cases and traumatic injuries.
Boldenone Cypionate will increase nitrogen retention, protein synthesis,increases appetito and stimulates the release of erythropoietin in the kidneys.
Boldenone improves the general state of debilitated horses, thus aiding in correcting weight losses and improving appetite. It is not a substitute for a well-balanced diet. Optimal results can be expected only when good management and feeding practices are utilized.
Boldenone Cypionate Oil Cook Recipes:
Boldenone Cypionate for 25 ml @ 200mg/ml
5 grams powder
16.25ml sesame oil
1.25ml BA 5%
3.75ml BB 15%
The opinion about Boldenone Cypionate from forums

1: Having boldenone attached to the cypionate ester would match nicely to many products we use of similar half lives and you wouldnt have to wait so long to see results. You also wouldnt have to run it for 16 weeks to really have gotten what you can out of it like when its attached to the undecylenate ester
2: The Cyp ester for this EQ is great as the regular ester in the original EQ is very very long acting .... I like the cyp but sometimes more frequent injections but you can keep it more constant level inside your body.
Boldenone Cypionate Dose:

Male bodybuilders generally take Boldenone Cyp in doses of 300-800mg's a week for 8-20wks, depending on goals, while women bodybuilders often find a dosage of 50-100mg's a week to be very effective for making quality gains while keeping side effects to a minimum. This steroid has a long half life (7-10) days and is most commonly injected twice per week to keep blood concentrations as steady as possible.

Equipoise is the popularly referenced brand name for the veterinary injectable steroid boldenone undecylenate. Specifically it is a derivative of testosterone, which exhibits strong anabolic and moderately androgenic properties. The undecylenate ester greatly extends the activity of the drug (the undecylenate ester is only one carbon atom longer than decanoate), so that clinically injections would need to be repeated every three or four weeks. In veterinary medicine Equipoise is most commonly used on horses, exhibiting a pronounced effect on lean bodyweight, appetite and general disposition of the animal. This compound is also said to shows a marked ability for increasing red blood cell production, although there should be no confusion that this is an effect characteristic of newly all anabolic/androgenic steroids. The favorable properties of this drug are greatly appreciated by athletes, Equipoise being a very popular injectable in recent years. It is considered by many to be a stronger, slightly more androgenic Deca-Durabolin . It is generally cheaper, and could replace Deca in most cycles without greatly changing the end result.Equipoise Raw material

Side effects
The side effects associated with Equipoise are generally mild. The structure of boldenone does allow it to convert into estrogen, but it does not have an extremely high affinity to do so. To try and quantify this we can look toward aromatization studies, which suggest that its rate of estrogen conversion should be roughly half that of testosterone’s. The tendency to develop a noticeable amount of water retention with this drug would therefore be slightly higher than that with Deca-Durabolin (with an estimated 20°/a conversion), but much less than what would be expected with a stronger agent such as Testosterone. While one does still have a chance of encountering an estrogen related side effect as such when using this substance, it is not a common problem when taken at a moderate dosage level. Gynecomastia might theoretically become a concern, but is usually only heaved of with very sensitive individuals or (again) those venturing high in dosage. Should estrogenic effects become troublesome, the addition of Nolvadex and/or Proviron should of course make the cycle more tolerable. An antiaromatase such as Cytadren or Arimidex would be stronger options, however probably not indicated with a mild drug as such.
Equipoise can also produce distinct androgenic side effects. Incidences of oily skin, acne, increased aggression and hair loss are likewise all possible with this compound, although will typically be related to the use of higher doses. Women in fact find this drug quite comfortable, virilization symptoms usually unseen when taken at low doses. Boldenone does reduce to a more potent androgen (dihydroboldenone) via the 5alpha reductase enzyme (which produces DHT from testosterone), however its affinity for this interaction in the human body is low to nonexistent”. We therefore cannot consider the reductase inhibitor Proscar to be of much use with Equipoise, as it would be blocking what is at best an insignificant path of metabolism for the steroid. And although this drug is relatively mild, it may still have a depressive effect on endogenous testosterone levels. A combination of HCG and Clomid ®/Nolvadex may likewise be needed at the conclusion of each cycle to avoid a “crash”, particularly when running long in duration.

Key Specifications/Special Features:
99% Top Quality Dht Stanolone powder Androstanolone for Bodybuilding muscle enhancement steroids
Product Name:Stanolone
Alias: Dihydrotestosterone;Androstanolone;4-Dihydrotestosterone;5a-Dihydrotestosterone
Chemical Name: 5a-androstan-17ß-ol-3-one
Suitable for: Adult
CAS No.: 521-18-6
Purity: >99%
MF:C19H30O2
Appearances: White Powder
FOB Price:$1.5-2/g
MOQ: 10 Grams.
Trademark: Cqsp
Specification: GMP, SGS, ISO9001, KOSHER,USP,BP
HS Code: 3002200000
Usage: Body Muscle Gain
Delivery: Express Courier.
Transport Package: 1kg Sterile Aluminum Foil Bag or Discreet Package or as your requirement.
Shipping: DHL, EMS, FedEx, UPS
Stanolone Description:
Androstanolone is chemically identical to DHT. DHT is mainly formed in the testes, the hair follicles, the adrenal glands and the prostate gland and is produced when testosterone interacts with an enzyme in the body. In the womb, DHT stimulates the development of male characteristics of the male embryo and fetus. During puberty, it is involved in developing other male characteristics such as body and facial hair and the deepening of the voice. Later in life, the level of DHT is usually much lower, and its presence can cause problems.
The main androgen which is secreted by the testes is of course testosterone. However, in most of the body, the androgenic sign is not carried through by testosterone. In these tissues inluding brain (CNS), skin, genitals - practically everything but (muscle enhancement steroids) muscle - the active androgen is actually dihydrotestosterone (DHT).
Applications:
Stanolone is use for chronic wasting disease, osteoporosis, severe infection and trauma, burn, etc caused by the negative nitrogen balance, promote the growth of premature infants and immature, etc. The fracture is not easy to heal. Hypercholesterolemia and postpartum depression can also be used.
Product test report:
COA:
Test Items Specification Test Results
Melting point 178-183 °C 179-182℃
Chromatographic purity In Pass confirm
Molecular Weight 290.44 confirm
Assay ≥98% 99%
Conclusion Be Conform With Enterprise Standard

Trenbolone Enanthate Steroid Raw Powder 10161-33-8

Trenbolone powder Enanthate
Alias:Trenbolone Enanthate;Parabolan;Tren E;10161-33-8;Primobolan-depot;Primobolan-depot
CAS No.: 10161-33-8
Molecular Formula: C25H34O3
Molecular weight: 382.54
Assay: 99.02%
Appearance: pale yellow or yellow crystalline powder

Usage: Trenbolone Enanthate is only available from labs and was not designed for human consumption, although it is considered to be an ideal drug for bodybuilders who want to burn fat and gain muscle, although its long ester makes unwise for professional athletes who undergo testing to use.
The recipe to convert Trenbolone Enanthate powder into oil injection :
Common 100mg/ml Recipe for 100ml
10 gram Trenbolone Ethanate powder (7.5ml)
2ml BA (2%)
10ml BB (10%)
80.5ml Oil

Common names: Trenabol Depot 100, Trenbolone Enanthate
Common quantity: Injections 100, 150, 200mg/ml
Common Solvents : Benzyl Alcohol, Benzyl Benzoate, Grape Seed Oil
Effective dose : 200 -750mg weekly

Trenbolone powder is an extremely powerful anabolic steroid and is considered the single greatest anabolic steroid by many performance enhancing athletes.This is one of the most versatile anabolic steroids on the market and can provide benefits quite unlike any other steroid.Trenbolone Acetate powder

II.Raw Trenbolone Enanthate powder usage in steroids cycle
1. Names:
Trenbolone enanthate (nickname Trenabol), or trenbolone heptanoate, also known as Tren E.
2. Raw Trenbolone Enanthate powder Usage:
Trenbolone enanthate is commonly used as an injected oil. The most common dose of the group is 75 to 100 mg.Ordinary Take it twice a week.The right duration for use is normally 8 weeks.
3. Warning on Raw Trenbolone Enanthate powder:
There are a few side effects on cardiovascular, which may affect cholesterol levels, so keep a healthy lifestyle, dietary habit is really important.
Also Individuals need to pay attention to the side effects of androgen, such as increased aggression, irritability, acne, the potential of male baldness, and benign prostatic hyperplasia (enlargement of the prostate)
4.Further instructions:
In the off-season, most find a stack of testosterone and Tren to be amazingly beneficial, and it’s also possible to add Anadrol or Dianabol. Others find using Nandrolone in an overlapping manner with their Tren to be much beneficial. However, such use is usually only advised for advanced long-term cycles. In the cutting phase, testosterone and Tren can again prove quite beneficial.
5. Trenbolone enanthate Raw Powder:
Min order 10grams.
The inquiry on normal quantity(Within 1kg) can be sent out in 12 hours after payment.
For larger order(Within 1kg)can be sent out in 3 workingdays after payment.
6. Trenbolone enanthate Raw Powder Recipes:
To inquiry our Customer Representitive(CSR) for details, for your reference.
7. Raw Trenbolone Enanthate powder Marketing:
To be provided in the coming future.

Trenbolone Powder Trenbolone Parabolan Anabolin Trenbolone Hexahydrobenzyl Carbonate CAS 23454-33-3

Trenbolone Hexahydrobenzyl Carbonate (Trenbolone Steroids)

1,Item Specifics:
Product Name:Trenbolone Hexahydrobenzyl Carbonate
Chemical Name: 4,9,11-estratrien-17beta-ol-3-one hexahydrobenzyl carbonate
Other name:Parabolan
CAS NO.: 23454-33-3
EINECS: 245-669-1
Assay:99%
Molecular Formula: C26H34O4
Molecular weight: 410.55
Appearance:White to light yellow crystalline powder
Package:1kg/aluminium foil bag or as required
Minimum order quantity:10g
Shipping:By express courier
Standard: enterprise standard
Product Origin: China
Brand Name: NanJian
PriceTerms: USD
Payment Method: t/t, western union, moneygram
Supply Ability: mass stock
Usage: pharmaceutical material, Steroid hormone, Anabolin. As a male hormone and anabolic hormones.

2, Product Description:
Parabolan has no estrogenic activity (it may actually reduce serum estradiol levels in the body), is a very strong anabolic and androgenic compound (5x stronger than testosterone in both categories!), and it binds well to the androgen receptor. Actually, binding "well" to the androgen receptor is quite an understatement. Theres no injectable AAS in our arsenal that binds to the androgen receptor (AR) as well as Trenbolone does. This is probably a major reason that Parabolan was so saught after for use as a precontest agent.
Androgen Receptors are found in fat cells as well as muscle cells, and we all know that they act on the AR in muscle cells to promote growth, but they androgens act directly on the AR in fat cells to affect fat burning.The stronger the androgen binds to the A.R, the higher the lipolytic (fat burning) effect on adipose (fat)tissue. As if thats not enough good news, some steroids even increase the numbers of A.R. in muscle and fat, leading me to speculate that this fat losing effect would be amplified with the concurrent use of other compounds, such as injectable testosterone.

3,Applications:
Parabolan is trenbolone cyclohexylmethylcarbonate. The half-life of a steroid ester is mostly dependent on its ratio of fat solubility to water solubility: the longer chain the ester, the higher this ratio, and the longer the half-life. This particular carbonate could be most closely compared with an enanthate ester; the half-life is probably a little less than week.read more